{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T18:30:21Z","timestamp":1789237821555,"version":"build-2803163510"},"reference-count":45,"publisher":"SAGE Publications","license":[{"start":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T00:00:00Z","timestamp":1747958400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"},{"start":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T00:00:00Z","timestamp":1747958400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["82272183"],"award-info":[{"award-number":["82272183"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Innate Immun"],"published-print":{"date-parts":[[2025,8]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Previous studies suggest that transient receptor potential melastatin 2 (TRPM2) plays a protective role in sepsis by enhancing bacterial clearance. This effect is mediated through the modulation of macrophage phenotypic changes, which strengthen the immune response against infection. However, the specific role and underlying mechanism of TRPM2 in macrophage polarization during sepsis remain unclear.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Method<\/jats:title>\n                    <jats:p>\n                      Cecal ligation and puncture (CLP) was used to establish a mouse sepsis model, and bone marrow\u2013derived macrophages (BMDMs) and peritoneal macrophages were prepared from C57BL\/6 wild-type and TRPM2 knockout (\n                      <jats:italic toggle=\"yes\">trpm<\/jats:italic>\n                      2\n                      <jats:sup>\u2212\/\u2212<\/jats:sup>\n                      ) mice. IPI549 was utilized as a specific inhibitor of PI3K. Macrophage polarization, bactericidal ability, and the PI3K\/protein kinase B (AKT)\/cyclic adenosine monophosphate response element-binding protein signaling pathway were assessed. In addition, survival rate, bacterial burden, lung wet\/dry weight ratio, lung and liver injury scores, and cytokine levels were measured in CLP-induced septic mice.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      In lipopolysaccharide (LPS)-stimulated BMDMs,\n                      <jats:italic toggle=\"yes\">trpm<\/jats:italic>\n                      2 deficiency increased the expression of characteristic markers associated with the M2b phenotype, reduced the bactericidal ability, and activated the PI3K\/AKT\/CREB signaling pathway. Consequently, both\n                      <jats:italic toggle=\"yes\">trpm<\/jats:italic>\n                      2\n                      <jats:sup>\u2212\/\u2212<\/jats:sup>\n                      BMDMs and\n                      <jats:italic toggle=\"yes\">trpm2<\/jats:italic>\n                      <jats:sup>\u2212\/\u2212<\/jats:sup>\n                      mice exhibited impaired bactericidal clearance during CLP-induced sepsis. Furthermore, IPI549 attenuated TRPM2 deletion-induced M2b polarization and restored the bactericidal function of BMDMs. Notably, IPI549 preconditioning reversed the increased susceptibility of the\n                      <jats:italic toggle=\"yes\">trpm<\/jats:italic>\n                      2\n                      <jats:sup>\u2212\/\u2212<\/jats:sup>\n                      mice to sepsis. The 7-day mortality rate was 92% in\n                      <jats:italic toggle=\"yes\">trpm<\/jats:italic>\n                      2\n                      <jats:sup>\u2212\/\u2212<\/jats:sup>\n                      mice, compared to 42% in IPI549-pretreated\n                      <jats:italic toggle=\"yes\">trpm<\/jats:italic>\n                      2\n                      <jats:sup>\u2212\/\u2212<\/jats:sup>\n                      mice. Moreover, IPI549-treated mice exhibited improved lung wet\/dry ratios, reduced lung and liver injury scores, reversed M2b polarization and decreased bacterial load.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The PI3K\/AKT\/CREB pathway mediates the effect of TRPM2 by inhibiting M2b macrophage polarization and promoting bacterial clearance during sepsis.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1177\/17534259251343377","type":"journal-article","created":{"date-parts":[[2025,5,23]],"date-time":"2025-05-23T03:22:37Z","timestamp":1747970557000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["TRPM2 deficiency contributes to M2b macrophage polarization via the PI3K\/AKT\/CREB pathway in murine sepsis"],"prefix":"10.1177","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0565-9635","authenticated-orcid":false,"given":"Yanping","family":"Shen","sequence":"first","affiliation":[{"name":"Zhejiang University School of Medicine"},{"name":"Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Ningbo, Zhejiang, China"},{"name":"Department of Anesthesiology, The Affiliated Women and Children's Hospital of Ningbo University, Ningbo, Zhejiang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6283-8018","authenticated-orcid":false,"given":"Rana","family":"Dhar","sequence":"additional","affiliation":[{"name":"Zhejiang University School of Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-3941-0914","authenticated-orcid":false,"given":"Jujun","family":"Liu","sequence":"additional","affiliation":[{"name":"Zhejiang University School of Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0004-4666-5582","authenticated-orcid":false,"given":"Shenghui","family":"Hong","sequence":"additional","affiliation":[{"name":"Laboratory Animal Center, Zhejiang University, Hangzhou, Zhjiang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9541-1352","authenticated-orcid":false,"given":"Huifang","family":"Tang","sequence":"additional","affiliation":[{"name":"Zhejiang University School of Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9553-1098","authenticated-orcid":false,"given":"Xiaowei","family":"Qian","sequence":"additional","affiliation":[{"name":"Zhejiang University School of Medicine"},{"name":"Zhejiang Provincial Clinical Research Center for Obstetrics and Gynecology, Ningbo, Zhejiang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2025,5,23]]},"reference":[{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1172\/JCI82224"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1001\/jama.2016.0287"},{"key":"e_1_3_3_4_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMp1704633"},{"key":"e_1_3_3_5_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1473-3099(13)70001-X"},{"key":"e_1_3_3_6_2","doi-asserted-by":"publisher","DOI":"10.1056\/NEJMoa1301066"},{"key":"e_1_3_3_7_2","doi-asserted-by":"publisher","DOI":"10.1186\/s12964-025-02149-4"},{"key":"e_1_3_3_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.imbio.2017.11.001"},{"key":"e_1_3_3_9_2","doi-asserted-by":"publisher","DOI":"10.3390\/ijms19061801"},{"key":"e_1_3_3_10_2","doi-asserted-by":"publisher","DOI":"10.1002\/JLB.3RU1018-378RR"},{"key":"e_1_3_3_11_2","doi-asserted-by":"publisher","DOI":"10.3389\/fimmu.2024.1352946"},{"key":"e_1_3_3_12_2","doi-asserted-by":"publisher","DOI":"10.1038\/nature19834"},{"key":"e_1_3_3_13_2","doi-asserted-by":"publisher","DOI":"10.4049\/jimmunol.1401132"},{"key":"e_1_3_3_14_2","doi-asserted-by":"publisher","DOI":"10.1038\/icb.2016.84"},{"key":"e_1_3_3_15_2","article-title":"PI3K\/Akt Signaling pathway modulates influenza virus induced mouse alveolar macrophage polarization to M1\/M2b","volume":"9","author":"Zhao X","year":"2014","unstructured":"Zhao X, Dai J, Xiao X, et al. 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