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<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">Front. Chem.</journal-id>
<journal-title>Frontiers in Chemistry</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Front. Chem.</abbrev-journal-title>
<issn pub-type="epub">2296-2646</issn>
<publisher>
<publisher-name>Frontiers Media S.A.</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="publisher-id">1200490</article-id>
<article-id pub-id-type="doi">10.3389/fchem.2023.1200490</article-id>
<article-categories>
<subj-group subj-group-type="heading">
<subject>Chemistry</subject>
<subj-group>
<subject>Original Research</subject>
</subj-group>
</subj-group>
</article-categories>
<title-group>
<article-title>Identifying promising GSK3&#x3b2; inhibitors for cancer management: a computational pipeline combining virtual screening and molecular dynamics simulations</article-title>
<alt-title alt-title-type="left-running-head">Hua et al.</alt-title>
<alt-title alt-title-type="right-running-head">
<ext-link ext-link-type="uri" xlink:href="https://doi.org/10.3389/fchem.2023.1200490">10.3389/fchem.2023.1200490</ext-link>
</alt-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Hua</surname>
<given-names>Libo</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/2094103/overview"/>
</contrib>
<contrib contrib-type="author" corresp="yes">
<name>
<surname>Anjum</surname>
<given-names>Farah</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="corresp" rid="c001">&#x2a;</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1492612/overview"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Shafie</surname>
<given-names>Alaa</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1482028/overview"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Ashour</surname>
<given-names>Amal Adnan</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Almalki</surname>
<given-names>Abdulraheem Ali</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/2277790/overview"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Alqarni</surname>
<given-names>Ali Abdullah</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Banjer</surname>
<given-names>Hamsa Jameel</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1705402/overview"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Almaghrabi</surname>
<given-names>Sarah Abdullah</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1156510/overview"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>He</surname>
<given-names>Shan</given-names>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
<xref ref-type="aff" rid="aff8">
<sup>8</sup>
</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1840584/overview"/>
</contrib>
<contrib contrib-type="author" corresp="yes">
<name>
<surname>Xu</surname>
<given-names>Nenggui</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="corresp" rid="c001">&#x2a;</xref>
<uri xlink:href="https://loop.frontiersin.org/people/1144892/overview"/>
</contrib>
</contrib-group>
<aff id="aff1">
<sup>1</sup>
<institution>South China Research Center for Acupuncture and Moxibustion</institution>, <institution>Medical College of Acupuncture Moxibustion and Rehabilitation</institution>, <institution>Guangzhou University of Chinese Medicine</institution>, <addr-line>Guangzhou</addr-line>, <country>China</country>
</aff>
<aff id="aff2">
<sup>2</sup>
<institution>Department of Clinical Laboratory Sciences</institution>, <institution>College of Applied Medical Sciences</institution>, <institution>Taif University</institution>, <addr-line>Taif</addr-line>, <country>Saudi Arabia</country>
</aff>
<aff id="aff3">
<sup>3</sup>
<institution>Department of Oral and Maxillofacial Surgery and Diagnostic Sciences</institution>, <institution>Faculty of Dentistry</institution>, <institution>Taif University</institution>, <addr-line>Taif</addr-line>, <country>Saudi Arabia</country>
</aff>
<aff id="aff4">
<sup>4</sup>
<institution>Department of Medical Laboratory Technology</institution>, <institution>Faculty of Applied Medical Sciences</institution>, <institution>King Abdulaziz University</institution>, <addr-line>Jeddah</addr-line>, <country>Saudi Arabia</country>
</aff>
<aff id="aff5">
<sup>5</sup>
<institution>Center for Innovations in Personalized Medicine (CIPM)</institution>, <institution>King Abdulaziz University</institution>, <addr-line>Jeddah</addr-line>, <country>Saudi Arabia</country>
</aff>
<aff id="aff6">
<sup>6</sup>
<institution>School of Food and Pharmacy</institution>, <institution>Zhejiang Ocean University</institution>, <addr-line>Zhoushan</addr-line>, <country>China</country>
</aff>
<aff id="aff7">
<sup>7</sup>
<institution>Institute for Nano Scale and Technology</institution>, <institution>College of Science and Engineering</institution>, <institution>Flinders University</institution>, <addr-line>Bedford Park</addr-line>, <addr-line>SA</addr-line>, <country>Australia</country>
</aff>
<aff id="aff8">
<sup>8</sup>
<institution>College of Engineering, Information Technology and Environment</institution>, <institution>Charles Darwin University</institution>, <addr-line>Darwin</addr-line>, <addr-line>NT</addr-line>, <country>Australia</country>
</aff>
<author-notes>
<fn fn-type="edited-by">
<p>
<bold>Edited by:</bold> <ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/387261/overview">Khurshid Ahmad</ext-link>, Yeungnam University, Republic of Korea</p>
</fn>
<fn fn-type="edited-by">
<p>
<bold>Reviewed by:</bold> <ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/1383695/overview">Anshul Tiwari</ext-link>, Vanderbilt University, United States</p>
<p>
<ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/1934587/overview">Shaheer Hasan Khan</ext-link>, Aligarh Muslim University, India</p>
<p>
<ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/599797/overview">Mohammad Aslam</ext-link>, Fujian Agriculture and Forestry University, China</p>
<p>
<ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/77890/overview">Brijesh Singh Yadav</ext-link>, Agricultural Research Organization (ARO), Israel</p>
</fn>
<corresp id="c001">&#x2a;Correspondence: Farah Anjum, <email>farahanjum@tu.edu.sa</email>; Nenggui Xu, <email>ngxu8018@163.com</email>
</corresp>
</author-notes>
<pub-date pub-type="epub">
<day>22</day>
<month>05</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="collection">
<year>2023</year>
</pub-date>
<volume>11</volume>
<elocation-id>1200490</elocation-id>
<history>
<date date-type="received">
<day>05</day>
<month>04</month>
<year>2023</year>
</date>
<date date-type="accepted">
<day>05</day>
<month>05</month>
<year>2023</year>
</date>
</history>
<permissions>
<copyright-statement>Copyright &#xa9; 2023 Hua, Anjum, Shafie, Ashour, Almalki, Alqarni, Banjer, Almaghrabi, He and Xu.</copyright-statement>
<copyright-year>2023</copyright-year>
<copyright-holder>Hua, Anjum, Shafie, Ashour, Almalki, Alqarni, Banjer, Almaghrabi, He and Xu</copyright-holder>
<license xlink:href="http://creativecommons.org/licenses/by/4.0/">
<p>This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.</p>
</license>
</permissions>
<abstract>
<p>Glycogen synthase kinase-3 (GSK3&#x3b2;), a serine/threonine protein kinase, has been discovered as a novel target for anticancer drugs. Although GSK3&#x3b2; is involved in multiple pathways linked to the etiology of various cancers, no specific GSK3&#x3b2; inhibitor has been authorized for cancer therapy. Most of its inhibitors have toxicity effects therefore, there is a need to develop safe and more potent inhibitors. In this study, a library of 4,222 anti-cancer compounds underwent rigorous computational screening to identify potential candidates for targeting the binding pocket of GSK3&#x3b2;. The screening process involved various stages, including docking-based virtual screening, physicochemical and ADMET analysis, and molecular dynamics simulations. Ultimately, two hit compounds, BMS-754807 and GSK429286A, were identified as having high binding affinities to GSK3&#x3b2;. BMS-754807 and GSK429286A exhibited binding affinities of &#x2212;11.9, and &#x2212;9.8&#xa0;kcal/mol, respectively, which were greater than that of the positive control (&#x2212;7.6&#xa0;kcal/mol). Further, molecular dynamics simulations for 100&#xa0;ns were employed to optimize the interaction between the compounds and GSK3&#x3b2;, and the simulations demonstrated that the interaction was stable and consistent throughout the study. These hits were also anticipated to have good drug-like properties. Finally, this study suggests that BMS-754807 and GSK429286A may undergo experimental validation to evaluate their potential as cancer treatments in clinical settings.</p>
</abstract>
<kwd-group>
<kwd>glycogen synthase kinase-3</kwd>
<kwd>cancer</kwd>
<kwd>virtual screening</kwd>
<kwd>molecular dynamics</kwd>
<kwd>drug-likeness</kwd>
</kwd-group>
<custom-meta-wrap>
<custom-meta>
<meta-name>section-at-acceptance</meta-name>
<meta-value>Medicinal and Pharmaceutical Chemistry</meta-value>
</custom-meta>
</custom-meta-wrap>
</article-meta>
</front>
<body>
<sec id="s1">
<title>1 Introduction</title>
<p>Cancer, a hyperproliferative condition, is characterized by excessive cell division and, eventually, metastasis. Protein kinases are essential regulators of many biological processes and are targets for a wide range of human disorders (<xref ref-type="bibr" rid="B12">Greten and Grivennikov, 2019</xref>). Glycogen synthase kinase-3 (GSK3&#x3b2;), a serine/threonine protein kinase, has been discovered as a novel target for anticancer drugs. It was originally thought to be the most significant enzyme involved in the metabolism of glycogen, but it is now largely recognized as a regulator of various cellular processes, such as the activity of several metabolic and signaling proteins when it phosphorylates (<xref ref-type="bibr" rid="B4">Cohen and Frame, 2001</xref>; <xref ref-type="bibr" rid="B6">Dickey et al., 2011</xref>). It promotes tumor cell survival in several cancers by using different pro-survival pathways regulated by NF-&#x3ba;B (<xref ref-type="bibr" rid="B37">Zhang et al., 2014</xref>; <xref ref-type="bibr" rid="B28">Saud et al., 2016</xref>), Hh/Gli (<xref ref-type="bibr" rid="B32">Trnski et al., 2015</xref>), mTOR (<xref ref-type="bibr" rid="B22">Pal et al., 2014</xref>), and STAT3 (<xref ref-type="bibr" rid="B9">Gao et al., 2017</xref>). GSK3&#x3b2; inhibitors are now being used to treat a variety of conditions, including Alzheimer&#x2019;s disease, diabetes, and cancer (<xref ref-type="bibr" rid="B16">Klamer et al., 2010</xref>; <xref ref-type="bibr" rid="B20">Medina and Avila, 2010</xref>; <xref ref-type="bibr" rid="B36">Zeng et al., 2014</xref>). Several inhibitors of GSK3&#x3b2; have been developed and progressed to early-stage clinical trials for various types of cancer (<xref ref-type="bibr" rid="B27">Sahin et al., 2019</xref>). One such inhibitor is Tideglusib, which was initially developed to target tau phosphorylation in Alzheimer&#x2019;s disease. However, studies have shown that it can increase proapoptotic proteins in murine models of human neuroblastoma, indicating its potential efficacy in cancer treatment (<xref ref-type="bibr" rid="B19">Mathuram et al., 2016</xref>). Another GSK3&#x3b2; inhibitor, LY2090314, has demonstrated antiproliferative properties in preclinical studies involving melanoma and neuroblastoma. This ATP-competitive inhibitor has shown promising results in clinical trials for cancer treatment (<xref ref-type="bibr" rid="B23">Palomo and Martinez, 2017</xref>; <xref ref-type="bibr" rid="B17">Kunnimalaiyaan et al., 2018</xref>). Additionally, Solasodine, a naturally occurring aglycone of glycoalkaloid, has been shown to inhibit the GSK-3 pathway and induce apoptosis in various types of malignancies (<xref ref-type="bibr" rid="B38">Zhuang et al., 2017</xref>). Although GSK3&#x3b2; is involved in multiple pathways linked to the etiology of various cancers, no specific GSK3&#x3b2; inhibitor has been authorized for cancer therapy.</p>
<p>GSK3&#x3b2; is a 433-residue protein with three different structural domains. The first 134 residues form a 7-strand beta-barrel in the N-terminal domain. Residues 135&#x2013;151 form a brief linker connecting the N-terminal domain to the alpha-helical domain. Residues 152&#x2013;342 comprise the alpha-helical domain, and residues 343&#x2013;433 make up the C-terminal domain. The ATP-binding site is located between the N-terminal and alpha-helical domains (<xref ref-type="bibr" rid="B14">Jacobs et al., 2012</xref>).</p>
<p>Drug development is a multidisciplinary, costly, and time-taking process. Computer-assisted drug discovery (CADD) is a constructive approach to drug development that hastens the process and decreases expenses. By reducing the need for animal models in pharmacological research and aiding in the rational design of safe drug candidates, CADD supports medicinal chemists and pharmacologists throughout drug discovery (<xref ref-type="bibr" rid="B24">Paul et al., 2021</xref>). The use of CADD has proven crucial to several projects across a range of contexts and research environments. CADD has played a substantial role in the identification and optimization of successful compounds that have moved to further stages of the drug development pipeline or commercialization (<xref ref-type="bibr" rid="B31">Talele et al., 2010</xref>). CADD has limitations due to the accuracy of computational models, the scarcity of structural data, the limited chemical diversity, the complexity of drug targets, and the lack of experimental validation (<xref ref-type="bibr" rid="B30">Sliwoski et al., 2014</xref>).</p>
<p>To identify possible candidates for targeting the binding pocket of GSK3&#x3b2;, we employed computational approaches to screening a diverse library of therapeutically active potential candidates for targeting the binding pocket of GSK3&#x3b2;.</p>
</sec>
<sec sec-type="methods" id="s2">
<title>2 Methodology</title>
<sec id="s2-1">
<title>2.1 Retrieval and preparation of GSK3&#x3b2; protein</title>
<p>The GSK3&#x3b2; protein (PDB: 4AFJ) was retrieved from the PDB database (<xref ref-type="bibr" rid="B10">Gentile et al., 2012</xref>). Heteroatoms, water molecules, and co-crystallized ligands were extracted, and the protein was saved in.pdb format. The heteroatoms were proto-oncogene frat, a 30 amino acid short peptide, SO4, GOL, and SJJ. The clean protein was finally prepared using <xref ref-type="bibr" rid="B24">Discovery Studio 2021</xref> for further studies.</p>
</sec>
<sec id="s2-2">
<title>2.2 Compound library preparation and virtual screening</title>
<p>The process of identifying new compounds with specific bioactivity has been transformed by virtual screening methods, which use computer simulations to assess large structure libraries against a biological target (<xref ref-type="bibr" rid="B18">Macalino et al., 2015</xref>). This study employed a library of 4,222 anti-cancer compounds (retrieved from <ext-link ext-link-type="uri" xlink:href="https://www.selleckchem.com">https://www.selleckchem.com</ext-link>), including both FDA-approved drugs and naturally occurring substances. The collection included compounds that were cell-permeable, therapeutically active, and diverse in terms of their chemical structure. The compound library was downloaded in &#x2018;sdf&#x2019; format and then processed in &#x2018;PyRx 0.8&#x2019; program (<xref ref-type="bibr" rid="B5">Dallakyan and Olson, 2015</xref>). The compounds library was minimized utilizing &#x2018;UFF&#x2019; force field as the energy minimization parameter and finally saved in the &#x2018;pdbqt&#x2019; format for further analysis. The grid coordinates of the GSK3&#x3b2; were set as X &#x3d; 104.048, Y &#x3d; 26.822, and Z &#x3d; &#x2212;12.474. The best hits were carefully chosen based on the binding affinity and interaction analysis toward GSK3&#x3b2;.</p>
</sec>
<sec id="s2-3">
<title>2.3 Physicochemical and ADMET properties</title>
<p>The DataWarrior tool was used to predict the drug-likeness and physicochemical properties of the top ten compounds, and the ProTox-II (<xref ref-type="bibr" rid="B1">Banerjee et al., 2018</xref>) and pkCSM web servers (<xref ref-type="bibr" rid="B25">Pires et al., 2015</xref>) were used for ADMET and pharmacokinetic properties.</p>
</sec>
<sec id="s2-4">
<title>2.4 MD simulations</title>
<p>The GROMACS 2021.4 software and GROMOS96 43a1 force-field were used to perform MD simulations of three complexes: GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807, and GSK3&#x3b2;-GSK429286A, all at 300&#xa0;K (<xref ref-type="bibr" rid="B26">Pol-Fachin et al., 2009</xref>). The topology and force-field factors of the compounds were generated using the PRODRG server, and their atoms were combined in the complex topology files. Na<sup>&#x2b;</sup> and Cl<sup>&#x2212;</sup> ions were introduced to neutralize the charges on the GSK3&#x3b2; protein complexes using the &#x2018;gmx_genion&#x2019; module (0.15&#xa0;M) (<xref ref-type="bibr" rid="B29">Schuttelkopf and van Aalten, 2004</xref>). The &#x2018;particle-mesh Ewald&#x2019; method was employed to analyze the interactions of GSK3&#x3b2; with these selected compounds. The system (for MD simulation) was minimized employing the &#x2018;steepest descent&#x2019; method (1,500 steps) and equilibrated over a 100-ps period at constant volume in two stages: NVT and NPT ensembles. The total simulation of 100 ns was conducted at 300&#xa0;K. Trajectories were analyzed using GROMACS modules, and 3D models were created using VMD (<xref ref-type="bibr" rid="B13">Humphrey et al., 1996</xref>) and PyMOL (<xref ref-type="bibr" rid="B34">Yuan et al., 2017</xref>).</p>
</sec>
</sec>
<sec sec-type="results|discussion" id="s3">
<title>3 Results and discussion</title>
<p>GSK3&#x3b2; dysfunction has been reported in various cancer types (<xref ref-type="bibr" rid="B7">Domoto et al., 2020</xref>), and has been identified as being at the crossroads of various biochemical pathways, including cancer-related pathways (<xref ref-type="bibr" rid="B8">Duda et al., 2020</xref>). Here in this study, a unique collection of 4,222 anti-cancer compounds were screened against the active pocket of GSK3&#x3b2;. Based on binding affinity, we chose the top ten screened compounds for further visual inspection and interaction studies (<xref ref-type="table" rid="T1">Table 1</xref>).</p>
<table-wrap id="T1" position="float">
<label>TABLE 1</label>
<caption>
<p>Binding affinity of top 10 screened compounds.</p>
</caption>
<table>
<thead valign="top">
<tr>
<th align="left">S. No</th>
<th align="center">Ligand</th>
<th align="center">Binding affinity (kcal/mol)</th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left">1</td>
<td align="left">YM201636</td>
<td align="center">&#x2212;10.6</td>
</tr>
<tr>
<td align="left">2</td>
<td align="left">OSI-906</td>
<td align="center">&#x2212;10.3</td>
</tr>
<tr>
<td align="left">3</td>
<td align="left">BMS-754807</td>
<td align="center">&#x2212;10.2</td>
</tr>
<tr>
<td align="left">4</td>
<td align="left">Tipifarnib</td>
<td align="center">&#x2212;10</td>
</tr>
<tr>
<td align="left">5</td>
<td align="left">VX-809</td>
<td align="center">&#x2212;10</td>
</tr>
<tr>
<td align="left">6</td>
<td align="left">INCB28060</td>
<td align="center">&#x2212;9.8</td>
</tr>
<tr>
<td align="left">7</td>
<td align="left">GSK429286A</td>
<td align="center">&#x2212;9.5</td>
</tr>
<tr>
<td align="left">8</td>
<td align="left">Limonin</td>
<td align="center">&#x2212;9.1</td>
</tr>
<tr>
<td align="left">9</td>
<td align="left">Icotinib</td>
<td align="center">&#x2212;8.7</td>
</tr>
<tr>
<td align="left">10</td>
<td align="left">AZ628</td>
<td align="center">&#x2212;8</td>
</tr>
<tr>
<td align="left">11</td>
<td align="left">AR-AO-14418 (Positive control)</td>
<td align="center">&#x2212;7.5</td>
</tr>
</tbody>
</table>
</table-wrap>
<p>The drug-likeness and physicochemical attributes of these top 10 compounds were anticipated using the DataWarrior tool, which employs several parameters including LogP, LogS, H-bond donors and acceptors, relative PSA, and the presence of structures with particular pharmacological properties. Both GSK429286A and BMS-754807 retain an adequate range of drug-likeness properties (<xref ref-type="table" rid="T2">Table 2</xref>). GSK429286A was discovered to be a selective inhibitor of Rho-associated coiled-coil protein kinase 1 (ROCK1) and ROCK2. These kinases are involved in a several cellular activities, which include cell motility, contraction, and adhesion, and have been associated to cancer, cardiovascular disease, and neurological disorders (<xref ref-type="bibr" rid="B15">Kim et al., 2021</xref>). BMS-754807 efficiently and irreversibly inhibits both insulin receptor (IR) family kinases and the insulin-like growth factor 1 receptor (IGF-1R). These kinases have a high binding affinity for it (Ki, 2&#xa0;nmol/L), which is important for controlling cell growth, survival, and metabolism. BMS-754807 is now in phase I clinical trials for the treatment of multiple types of human cancer (<xref ref-type="bibr" rid="B3">Carboni et al., 2009</xref>).</p>
<table-wrap id="T2" position="float">
<label>TABLE 2</label>
<caption>
<p>Physicochemical assessment of top 10 screened compounds.</p>
</caption>
<table>
<thead valign="top">
<tr>
<th align="left">Molecule name</th>
<th align="left">Mol<break/> Weight</th>
<th align="left">cLogP</th>
<th align="left">cLogS</th>
<th align="left">H-acceptors</th>
<th align="left">H-donors</th>
<th align="left">Relative PSA</th>
<th align="left">Drug likeness</th>
<th align="left">Mut</th>
<th align="left">Tum</th>
<th align="left">Rep</th>
<th align="left">Irr</th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left">Icotinib</td>
<td align="left">391.41</td>
<td align="left">2.9067</td>
<td align="left">&#x2212;3.673</td>
<td align="left">7</td>
<td align="left">1</td>
<td align="left">0.23718</td>
<td align="left">&#x2212;12.415</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">INCB28060</td>
<td align="left">412.41</td>
<td align="left">2.2964</td>
<td align="left">&#x2212;3.284</td>
<td align="left">7</td>
<td align="left">1</td>
<td align="left">0.24682</td>
<td align="left">4.3136</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">OSI-906</td>
<td align="left">421.49</td>
<td align="left">4.0356</td>
<td align="left">&#x2212;6.927</td>
<td align="left">6</td>
<td align="left">2</td>
<td align="left">0.2212</td>
<td align="left">1.7312</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">GSK429286A</td>
<td align="left">432.37</td>
<td align="left">3.3102</td>
<td align="left">&#x2212;5.084</td>
<td align="left">6</td>
<td align="left">3</td>
<td align="left">0.24809</td>
<td align="left">&#x2212;1.5348</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">AZ628</td>
<td align="left">451.51</td>
<td align="left">4.6632</td>
<td align="left">&#x2212;6.584</td>
<td align="left">7</td>
<td align="left">2</td>
<td align="left">0.21932</td>
<td align="left">&#x2212;3.6106</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">VX-809</td>
<td align="left">452.40</td>
<td align="left">5.632</td>
<td align="left">&#x2212;6.513</td>
<td align="left">7</td>
<td align="left">2</td>
<td align="left">0.26229</td>
<td align="left">&#x2212;1.4961</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">BMS-754807</td>
<td align="left">461.49</td>
<td align="left">2.3302</td>
<td align="left">&#x2212;5.859</td>
<td align="left">10</td>
<td align="left">3</td>
<td align="left">0.31262</td>
<td align="left">6.8809</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">YM201636</td>
<td align="left">467.47</td>
<td align="left">2.7535</td>
<td align="left">&#x2212;7.308</td>
<td align="left">10</td>
<td align="left">2</td>
<td align="left">0.32145</td>
<td align="left">2.2644</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">Limonin</td>
<td align="left">470.51</td>
<td align="left">1.0279</td>
<td align="left">&#x2212;4.073</td>
<td align="left">8</td>
<td align="left">0</td>
<td align="left">0.32001</td>
<td align="left">&#x2212;3.0035</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
<tr>
<td align="left">Tipifarnib</td>
<td align="left">489.39</td>
<td align="left">4.03</td>
<td align="left">&#x2212;5.185</td>
<td align="left">5</td>
<td align="left">1</td>
<td align="left">0.14038</td>
<td align="left">2.4006</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
<td align="left">NO</td>
</tr>
</tbody>
</table>
</table-wrap>
<p>The robust stability of the hit compounds within the GSK3&#x3b2; active site was attributed to the presence of various Van der Waals and H-bonding interactions (<xref ref-type="table" rid="T3">Table 3</xref>). These interactions aided in the intercalation of the compounds into the active site, increasing their binding affinity and overall stability (<xref ref-type="fig" rid="F1">Figures 1A&#x2013;E</xref>). BMS-754807 interacted with several residues like Ile62, Gly63, Asn64, Gly65, Val70, Ala83, Lys85, Leu132, Tyr134, Val135, Pro136, Glu137, Thr138, Arg141, Lys183, Gln185, Asn186, Leu188, Cys199, and Asp200 and residues of GSK3&#x3b2;. The Van der Waals interaction involves a set of amino acid residues, namely, Gly63, Asn64, Gly65, Ala83, Lys85, Leu132, Tyr134, Val135, Pro136, Glu137, Thr138, Arg141, Lys183, Leu188, Cys199, and Asp200; while Gln185 and Asn186 residues were involved in H-bonding (<xref ref-type="fig" rid="F1">Figure 1C</xref>). Further, GSK429286A interacted with Ile62, Gly63, Asn64, Ala83, Lys85, Glu97, Val110, Leu132, Tyr134, Val135, Pro136, Thr138, Arg141, Val70, Lys183, Gln185, Asn186, Leu188, Cys199, Asp200, and Phe201 residues of GSK3&#x3b2;. Gly63, Val70, Ala83, Lys85, Glu97, Val110, Leu132, Val135, Thr138, Lys183, Asn186, Leu188, and Phe201 residues participates in Van der Waals interactions; while Lys85, Pro136, and Asp200 residues were involved in H-bonding (<xref ref-type="fig" rid="F1">Figure 1D</xref>). Several amino acid residues of the GSK3&#x3b2; have alrady been described to play an essential role in inhibitor binding. These residues include Ile62, Gly63, Asn64, Val70, Ala83, Lys85, Glu97, Leu132, Tyr134, Val135, Leu188, Cys199, Asp200, and Phe201 (<xref ref-type="bibr" rid="B21">Mishra et al., 2019</xref>). It is noteworthy that the compounds (BMS-754807, and GSK429286A) have been observed to bind with these GSK3&#x3b2; residues.</p>
<table-wrap id="T3" position="float">
<label>TABLE 3</label>
<caption>
<p>H-bonded and other interactions residues.</p>
</caption>
<table>
<thead valign="top">
<tr>
<th align="center">Compounds</th>
<th align="center">H-bonded residues</th>
<th align="center">Number of H-bond</th>
<th align="center">Other interactions</th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left">BMS-754807</td>
<td align="left">Asn186, and Gln185</td>
<td align="center">2</td>
<td align="left">Ile62, Gly63, Asn64, Gly65, Val70, Ala83, Lys85, Leu132, Tyr134, Val135, Pro136, Glu137, Thr138, Arg141, Lys183, Leu188, Cys199, and Asp200</td>
</tr>
<tr>
<td align="left">GSK429286A</td>
<td align="left">Lys85, Pro136, and Asp200</td>
<td align="center">3</td>
<td align="left">Ile62, Gly63, Asn64, Ala83, Glu97, Val110, Leu132, Tyr134, Val135, Thr138, Arg141, Val70, Lys183, Gln185, Asn186, Leu188, Cys199, and Phe201</td>
</tr>
<tr>
<td align="left">AR-AO-14418</td>
<td align="left">Ser66, Phe67, Lys85, and Asp200</td>
<td align="center">4</td>
<td align="left">Ile62, Gly63, Asn64, Gly65, Val70, Ala83, Tyr134, Val135, Lys183, Leu188, and Cys199</td>
</tr>
</tbody>
</table>
</table-wrap>
<fig id="F1" position="float">
<label>FIGURE 1</label>
<caption>
<p>Visualization of hits and positive control in the GSK3&#x3b2; binding pocket <bold>(A, B)</bold>; 2D view of GSK3&#x3b2; residues interacting with BMS-754807 <bold>(C)</bold>, GSK429286A <bold>(D)</bold>, and AR-AO-14418 <bold>(E)</bold>.</p>
</caption>
<graphic xlink:href="fchem-11-1200490-g001.tif"/>
</fig>
<p>N-(4-methoxybenzyl)-N0-(5-nitro-1,3-thiazol-2-yl) urea (AR-AO-14418) is a selective inhibitor of GSK3&#x3b2; (<xref ref-type="bibr" rid="B2">Bhat et al., 2003</xref>), and was used as a positive control in this study. <italic>In vitro</italic>, ARA014418 inhibited GSK3&#x3b2; without significantly inhibiting other kinases, reducing tau phosphorylation at Ser-396. <italic>In vivo</italic>, it induced antidepressant-like effects in rats by decreasing immobility time and both spontaneous and amphetamine-induced activity (<xref ref-type="bibr" rid="B11">Gould et al., 2004</xref>). AR-AO-14418 interacted with Ile62, Gly63, Asn64, Gly65, Ser66, Phe67, Val70, Ala83, Lys85, Tyr134, Val135, Lys183, Leu188, Cys199, and Asp200 residues of GSK3&#x3b2; (<xref ref-type="fig" rid="F1">Figure 1E</xref>). Interestingly, Ile62, Gly63, Asn64, Val70, Ala83, Lys85, Tyr134, Val135, Lys183, Leu188, Cys199, and Asp200 GSK3&#x3b2; residues were observed to be common interacting residues with both the hits (BMS-754807, and GSK429286A) as well as the AR-AO-14418 (<xref ref-type="fig" rid="F1">Figure 1C</xref>-<xref ref-type="fig" rid="F1">1E</xref>). In addition, Lys85, and Asp200 were the common H-bonded residues with GSK429286A and the AR-AO-14418.</p>
<p>BMS-754807 oral toxicity prediction results were as follows: pLD50: 500&#xa0;mg/kg, pToxicity Class: 4, average similarity: 39.97%, pAccuracy: 23%; while GSK429286A oral toxicity prediction results were as follows: pLD50: 50&#xa0;mg/kg, pToxicity Class: 2, Average similarity: 45.44%, pAccuracy: 54.26%. BMS-754807 falls into the category of &#x2018;harmful if swallowed&#x2019; while GSK429286A falls into the category of &#x2018;fatal if swallowed&#x2019; as its LD50 value is greater than that of BMS-754807. In addition, multiple toxicity endpoints, including acute toxicity, hepatotoxicity, cytotoxicity, carcinogenicity, mutagenicity, immunotoxicity, <italic>etc.</italic>, were within the acceptable range for these two compounds (<xref ref-type="fig" rid="F2">Figure 2</xref>). Further, multiple pharmacokinetic properties including ADMET of both GSK429286A and BMS-754807 were predicted by the pkCSM web server, which results that both compounds are satisfactorily appropriate in several parameters of ADMET (<xref ref-type="table" rid="T4">Table 4</xref>).</p>
<fig id="F2" position="float">
<label>FIGURE 2</label>
<caption>
<p>Toxicity radar chart of BMS-754807 and GSK429286A.</p>
</caption>
<graphic xlink:href="fchem-11-1200490-g002.tif"/>
</fig>
<table-wrap id="T4" position="float">
<label>TABLE 4</label>
<caption>
<p>ADMET calculation of GSK429286&#xa0;A and BMS-754807.</p>
</caption>
<table>
<thead valign="top">
<tr>
<th align="left">Property</th>
<th colspan="3" align="left">Model name</th>
<th colspan="2" align="center">Predicted value</th>
<th align="left">Unit</th>
</tr>
</thead>
<tbody valign="top">
<tr>
<td align="left"/>
<td colspan="3" align="left"/>
<td align="left">GSK429286A</td>
<td align="left">BMS-754807</td>
<td align="left"/>
</tr>
<tr>
<td rowspan="7" align="left">Absorption</td>
<td colspan="3" align="left">Water sol</td>
<td align="left">&#x2212;4.068</td>
<td align="left">&#x2212;2.92</td>
<td align="left">log mol/L</td>
</tr>
<tr>
<td colspan="3" align="left">Caco2 per</td>
<td align="left">0.699</td>
<td align="left">1.256</td>
<td align="left">log Papp in 10&#x2013;6&#xa0;cm/s</td>
</tr>
<tr>
<td colspan="3" align="left">Intestinal abs</td>
<td align="left">88.306</td>
<td align="left">87.281</td>
<td align="left">% Absorbed</td>
</tr>
<tr>
<td colspan="3" align="left">Skin Per</td>
<td align="left">&#x2212;2.761</td>
<td align="left">&#x2212;2.735</td>
<td align="left">log Kp</td>
</tr>
<tr>
<td colspan="3" align="left">P-glycoprotein (P-gp) substrate</td>
<td align="left">Y</td>
<td align="left">Y</td>
<td align="left"/>
</tr>
<tr>
<td colspan="3" align="left">P-gp I inhibitor</td>
<td align="left">Y</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="3" align="left">P-gp II inhibitor</td>
<td align="left">Y</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td rowspan="4" align="left">Distribution</td>
<td colspan="3" align="left">VDss (human)</td>
<td align="left">&#x2212;0.148</td>
<td align="left">0.847</td>
<td align="left">log L/kg</td>
</tr>
<tr>
<td colspan="3" align="left">Fraction unbound</td>
<td align="left">0</td>
<td align="left">0.143</td>
<td align="left">Fu</td>
</tr>
<tr>
<td rowspan="2" colspan="2" align="left">Per</td>
<td align="left">&#x2212;1.129</td>
<td align="left">&#x2212;1.747</td>
<td align="left">&#x2212;0.528</td>
<td align="left">log BB</td>
</tr>
<tr>
<td align="left">&#x2212;2.193</td>
<td align="left">&#x2212;3.615</td>
<td align="left">&#x2212;1.665</td>
<td align="left">log PS</td>
</tr>
<tr>
<td rowspan="7" align="left">Metabolism</td>
<td rowspan="2" align="center">substrate</td>
<td colspan="2" align="left">N</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="2" align="left">Y</td>
<td align="left">N</td>
<td align="left">Y</td>
<td align="left"/>
</tr>
<tr>
<td rowspan="5" align="center">inhibitor</td>
<td colspan="2" align="left">N</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="2" align="left">Y</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="2" align="left">Y</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="2" align="left">N</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="2" align="left">Y</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td rowspan="2" align="left">Excretion</td>
<td colspan="3" align="left">Total Clearance</td>
<td align="left">&#x2212;0.02</td>
<td align="left">&#x2212;0.393</td>
<td align="left">log mL/min/kg</td>
</tr>
<tr>
<td colspan="3" align="left">Renal OCT2 substrate</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td rowspan="10" align="left">Toxicity</td>
<td colspan="3" align="left">AMES toxicity</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="3" align="left">Max. Tolerated dose (human)</td>
<td align="left">&#x2212;0.205</td>
<td align="left">0.738</td>
<td align="left">log mg/kg/day</td>
</tr>
<tr>
<td rowspan="2" align="center">inhibitor</td>
<td colspan="2" align="left">N</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="2" align="left">Y</td>
<td align="left">Y</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="3" align="left">LD50</td>
<td align="left">2.192</td>
<td align="left">2.446</td>
<td align="left">mol/kg</td>
</tr>
<tr>
<td colspan="3" align="left">LOAEL</td>
<td align="left">1.717</td>
<td align="left">1.859</td>
<td align="left">log mg/kg_bw/day</td>
</tr>
<tr>
<td colspan="3" align="left">Hepato</td>
<td align="left">Y</td>
<td align="left">Y</td>
<td align="left"/>
</tr>
<tr>
<td colspan="3" align="left">Skin Sensitization</td>
<td align="left">N</td>
<td align="left">N</td>
<td align="left"/>
</tr>
<tr>
<td colspan="3" align="left">T. Pyriformis</td>
<td align="left">0.349</td>
<td align="left">0.285</td>
<td rowspan="2" align="left">log mM</td>
</tr>
<tr>
<td colspan="3" align="left">MinNw</td>
<td align="left">1.501</td>
<td align="left">1.63</td>
</tr>
</tbody>
</table>
<table-wrap-foot>
<fn>
<p>(per. &#x3d; permeability; sol. &#x3d; solubility; Y&#x3d;Yes; N&#x3d;No).</p>
</fn>
</table-wrap-foot>
</table-wrap>
<p>MD simulation studies were carried out to evaluate complex stability. Protein stability can be measured using the root mean square deviation (RMSD), where a lower RMSD value indicates a more stable protein structure. GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807, and GSK3&#x3b2;-GSK429286A had RMSD average values of 0.42, 0.31, and 0.35&#xa0;nm, respectively. The RMSD plot revealed that GSK3&#x3b2;-BMS-754807 and GSK3&#x3b2;-GSK429286A complex showed more binding stability than the control compound. The &#x2018;GSK3&#x3b2;-control&#x2019; complex showed high deviation from its original conformation, it showed that the active site pocket of GSK3&#x3b2; formed quite stable interaction with both of the selected compounds. In addition, the ligand RMSD exhibits GSK3&#x3b2;-BMS-754807 and GSK3&#x3b2;-GSK429286A high deviation, and interestingly, the GSK3&#x3b2;-control complex showed low deviation (<xref ref-type="fig" rid="F3">Figure 3A</xref>-<xref ref-type="fig" rid="F3">B</xref>).</p>
<fig id="F3" position="float">
<label>FIGURE 3</label>
<caption>
<p>MD simulation studies of complexes. RMSD plot <bold>(A)</bold>, RMSD plot of ligands <bold>(B)</bold>, RMSF plot <bold>(C)</bold>, and Rg plot <bold>(D)</bold> of GSK3&#x3b2; protein with the ligands.</p>
</caption>
<graphic xlink:href="fchem-11-1200490-g003.tif"/>
</fig>
<p>The fluctuation of each residue during the simulation was averaged, and the root mean square fluctuation (RMSF) of GSK3&#x3b2; was calculated while binding to GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807, and GSK3&#x3b2;-GSK429286A. These values were plotted against the residue numbers of GSK3&#x3b2;. The GSK3&#x3b2;-control and GSK3&#x3b2;-GSK429286A backbones presented steady fluctuations in the catalytic pocket of GSK3&#x3b2;, presumably due to different orientations and the GSK3&#x3b2;-BMS-754807 complex indicated high fluctuation in region 230&#x2013;260 residues (<xref ref-type="fig" rid="F3">Figure 3C</xref>). On the other hand, GSK3&#x3b2;-control, and GSK3&#x3b2;-GSK429286A complexes showed the least overall fluctuations.</p>
<p>By measuring the distribution of atoms around the axis of a protein, the radius of gyration (Rg) provides insight into the compactness profile of a complex in a biological system. The GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807 and GSK3&#x3b2;-GSK429286A complexes had average Rg values of 2.13, 2.15, and 2.17&#xa0;nm, respectively. Rg plot showed lesser compactness in GSK3&#x3b2;-control and GSK3&#x3b2;-BMS-754807 than GSK3&#x3b2;-GSK429286A complexes. It contingent that after binding, these compounds make GSK3&#x3b2; stable, due to GSK3&#x3b2; showing less Rg trajectories (<xref ref-type="fig" rid="F3">Figure 3D</xref>). Among both compounds, BMS-754807 showed better stability in the catalytic pocket of GSK3&#x3b2;.</p>
<p>The Solvent-accessible surface area (SASA) of a protein refers to the portion of its surface area that interacts with its surrounding solvent molecules. The average SASA values for GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807, and GSK3&#x3b2;-GSK429286A complexes were plotted during the 100&#xa0;ns simulation. The SASA values for the GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807, and GSK3&#x3b2;-GSK429286A complexes were 170.51, 178.10, and 180.42&#xa0;nm<sup>2</sup>, respectively (<xref ref-type="fig" rid="F4">Figure 4A</xref>). Further, GSK3&#x3b2;-control and GSK3&#x3b2;-BMS-754807 overlapped each other in 2D projection analysis, whereas GSK3&#x3b2;-GSK429286A showed a different pattern (<xref ref-type="fig" rid="F4">Figure 4B</xref>). SASA exploration indicated that upon binding of control, BMS-754807, surface exposure has been reduced and the GSK429286A compound increases the surface area of solvent accessibility. Further, hydrogen bond analysis was performed of the docked complexes. To evaluate the stability of the docked complexes, 100&#xa0;ns simulations of GSK3&#x3b2;-control, GSK3&#x3b2;-BMS-754807, and GSK3&#x3b2;-GSK429286A were conducted in the presence of a solvent environment. The control and BMS-754807 compound showed an average 2&#x2013;7&#xa0;H-bond with GSK3&#x3b2; protein whereas, the GSK429286A compound showed 2&#x2013;6&#xa0;H-bond. It inferred that the BMS-754807 compound showed more stable interaction and might work as a potential drug against the GSK3&#x3b2; protein (<xref ref-type="fig" rid="F4">Figure 4C</xref>-<xref ref-type="fig" rid="F4">E</xref>).</p>
<fig id="F4" position="float">
<label>FIGURE 4</label>
<caption>
<p>SASA plot <bold>(A)</bold>, 2D projection of complexes <bold>(B)</bold>, and number of H-bonds in complexes <bold>(C&#x2013;E)</bold>.</p>
</caption>
<graphic xlink:href="fchem-11-1200490-g004.tif"/>
</fig>
<p>Next, Mean square displacement (MSD) was determined. It found that the GSK3&#x3b2;-BMS-754807 complex had a higher displacement than the control and the GSK3&#x3b2;-GSK429286A complex (<xref ref-type="fig" rid="F5">Figure 5A</xref>). The Gibbs&#x2019; free energy (GFE) landscape was computed using GROMACS analysis modules, and the first (PC1) and second (PC2) eigenvectors were projected to generate a Comparable GFE contour map, where darker blue shades indicate lower energy levels. During the simulations, the global minima of GSK3&#x3b2; fluctuated due to the binding of the complexes to the GSK3&#x3b2; protein. The GSK3&#x3b2;-control and GSK3&#x3b2;-GSK429286A were showing similar projections; and GSK3&#x3b2;-BMS-754807 was showing dissimilar global minima, demonstrating that BMS-754807 global minima drastically changed during the simulation (<xref ref-type="fig" rid="F5">Figure 5B</xref>-<xref ref-type="fig" rid="F5">D</xref>). The above results suggested that the BMS-754807 compound might be used as a possible drug for the GSK3&#x3b2; protein.</p>
<fig id="F5" position="float">
<label>FIGURE 5</label>
<caption>
<p>Mean square displacement plot of complexes <bold>(A)</bold>, GFE landscape plot <bold>(B&#x2013;D)</bold>.</p>
</caption>
<graphic xlink:href="fchem-11-1200490-g005.tif"/>
</fig>
<p>Several small-molecule inhibitors of GSK3&#x3b2;, such as CHIR-99021, CHIR-98014, SB216763, SB415286, AR-A011418, CG701338, and CG202796, have been utilized in preclinical studies involving cell and animal models to investigate the potential involvement of GSK3&#x3b2; in cancer pathogenesis (<xref ref-type="bibr" rid="B33">Walz et al., 2017</xref>). These compounds, however, are primarily classified as &#x201c;toolkit compounds&#x201d; due to a lack of adequate ADMET properties required for advancement as drug candidates to clinical trials. To date, clinical trials on GSK3&#x3b2; inhibitors, including tideglusib and LY2090314, have demonstrated their tolerability, indicating that concerns about GSK3&#x3b2; inhibition causing widespread metabolic toxicity were not justified. LY2090314 has a suboptimal pharmacokinetic profile, so the lack of toxicity observed could be attributed to inadequate systemic exposure (<xref ref-type="bibr" rid="B35">Zamek-Gliszczynski et al., 2013</xref>). The selected compounds in this study demonstrated promising drug-like properties and have been proposed to inhibit cancer progression via their interaction with GSK3&#x3b2;.</p>
</sec>
<sec sec-type="conclusion" id="s4">
<title>4 Conclusion</title>
<p>In this study, an insilico screening approach was employed to investigate potential anti-cancer compounds targeting the GSK3&#x3b2; protein. BMS-754807 and GSK429286A were discovered to have high binding affinity and stability to the GSK3&#x3b2; protein. The favorable interactions were found to be attributed to various Van der Waals forces and H-bonding interactions. Additionally, both compounds exhibited promising drug-like properties. These findings provide a basis for further investigation <italic>in vitro</italic> and <italic>in vivo</italic> to develop potent GSK3&#x3b2; inhibitors for cancer management.</p>
</sec>
</body>
<back>
<sec sec-type="data-availability" id="s5">
<title>Data availability statement</title>
<p>The original contributions presented in the study are included in the article, further inquiries can be directed to the corresponding authors.</p>
</sec>
<sec id="s6">
<title>Author contributions</title>
<p>Conceptualization, FA and NX; formal analysis, AA, SH, and HB; methodology, LH, AS, and AA; original draft preparation, LH and FA; review and editing, AA, SA, FA, and NX. All authors read and approved the final manuscript. All authors contributed to the article and approved the final version.</p>
</sec>
<sec id="s7">
<title>Funding</title>
<p>This work was supported by Discipline Collaborative Innovation Team Program of Double First-class and High-level Universities for Guangzhou University of Chinese Medicine&#x2014;No. 2021XK01.</p>
</sec>
<ack>
<p>The researchers would like to acknowledge Deanship of Scientific Research, Taif University for funding this work.</p>
</ack>
<sec sec-type="COI-statement" id="s8">
<title>Conflict of interest</title>
<p>The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.</p>
</sec>
<sec sec-type="disclaimer" id="s9">
<title>Publisher&#x2019;s note</title>
<p>All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article, or claim that may be made by its manufacturer, is not guaranteed or endorsed by the publisher.</p>
</sec>
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