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<journal-id journal-id-type="publisher-id">Front. Immunol.</journal-id>
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<journal-title>Frontiers in Immunology</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Front. Immunol.</abbrev-journal-title>
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<issn pub-type="epub">1664-3224</issn>
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<publisher-name>Frontiers Media S.A.</publisher-name>
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<article-id pub-id-type="doi">10.3389/fimmu.2026.1809814</article-id>
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<subject>Retraction</subject>
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<title-group>
<article-title>Retraction: P311 facilitates the angiogenesis and wound healing function of MSCs by increasing VEGF production</article-title>
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<collab>Frontiers Editorial Office</collab>
<xref ref-type="corresp" rid="c001"><sup>*</sup></xref>
<uri xlink:href="https://loop.frontiersin.org/people/228891/overview"/>
<role vocab="credit" vocab-identifier="https://credit.niso.org/" vocab-term="Writing &#x2013; original draft" vocab-term-identifier="https://credit.niso.org/contributor-roles/writing-original-draft/">Writing &#x2013; original draft</role>
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<corresp id="c001"><label>*</label>Correspondence: Frontiers Editorial Office, <email xlink:href="mailto:research.integrity@frontiersin.org">research.integrity@frontiersin.org</email></corresp>
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<pub-date publication-format="electronic" date-type="pub" iso-8601-date="2026-02-20">
<day>20</day>
<month>02</month>
<year>2026</year>
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<year>2026</year>
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<volume>17</volume>
<elocation-id>1809814</elocation-id>
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<date date-type="received">
<day>12</day>
<month>02</month>
<year>2026</year>
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<date date-type="accepted">
<day>12</day>
<month>02</month>
<year>2026</year>
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<copyright-statement>Copyright &#xa9; 2026 Frontiers Editorial Office.</copyright-statement>
<copyright-year>2026</copyright-year>
<copyright-holder>Frontiers Editorial Office</copyright-holder>
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<ali:license_ref start_date="2026-02-20">https://creativecommons.org/licenses/by/4.0/</ali:license_ref>
<license-p>This is an open-access article distributed under the terms of the <ext-link ext-link-type="uri" xlink:href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License (CC BY)</ext-link>. 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.</license-p>
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<related-article id="RA1" related-article-type="retracted-article" ext-link-type="doi" xlink:href="10.3389/fimmu.2022.821932" journal-id="Front Immunol" journal-id-type="nlm-ta">A retraction of the Original Research article: 
<article-title>P311 facilitates the angiogenesis and wound healing function of MSCs by increasing VEGF production</article-title> by Liu Z, Yang J, Chen Y, Chen C, Wang J, Lee YM, Zheng W, Shang R, Tang Y, Zhang X, Hu X, Huang Y, Peng S, Liou Y-C, He W and Luo G (2022) <italic>Front. Immunol.</italic> 13:821932. doi:&#xa0;<object-id>10.3389/fimmu.2022.821932</object-id>
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<meta-name>section-at-acceptance</meta-name>
<meta-value>Inflammation</meta-value>
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<body>
<p>The journal retracts the 28 January 2022 article cited above.</p>
<p>Following publication, concerns were raised regarding the integrity of the images in the published figures. An investigation was conducted in accordance with Frontiers&#x2019; policies and with the collaboration of the authors. It was concluded that the findings and conclusions of the article were unreliable, and the article has been retracted.</p>
<p>This retraction was approved by the Chief Editors of Frontiers in Immunology and the Chief Executive Editor of Frontiers. The authors were informed of this retraction and agree with the decision.</p>
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<p>Approved by: <ext-link ext-link-type="uri" xlink:href="https://loop.frontiersin.org/people/111428">Frontiers Editorial Office</ext-link>, Frontiers Media SA, Switzerland</p></fn>
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