{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T14:02:21Z","timestamp":1787839341932,"version":"build-2784847793"},"reference-count":37,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"21","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["JAHA"],"published-print":{"date-parts":[[2021,11,2]]},"abstract":"<jats:sec xml:lang=\"en\">\n                    <jats:title>Background<\/jats:title>\n                    <jats:p xml:lang=\"en\">Exploring potential therapeutic target is of great significance for myocardial infarction (MI) and post\u2010MI heart failure. Transcription factor Yin\u2010Yang 1 (YY1) is an essential regulator of apoptosis and angiogenesis, but its role in MI is unclear.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec xml:lang=\"en\">\n                    <jats:title>Methods and Results<\/jats:title>\n                    <jats:p xml:lang=\"en\">The expression of YY1 was assessed in the C57BL\/6J mouse heart following MI. Overexpression or silencing of YY1 in the mouse heart was achieved by adeno\u2010associated virus 9 injection. The survival, cardiac function, and scar size, as well as the apoptosis, angiogenesis, cardiac fibrosis, T helper 2 lymphocyte cytokine production, and macrophage polarization were assessed. The effects of YY1 on Akt phosphorylation and vascular endothelial growth factor production were also investigated. The expression of YY1 in heart was significantly stimulated by MI. The survival rate, cardiac function, scar size, and left ventricular volume of mice were improved by YY1 overexpression but worsened by YY1 silencing. YY1 alleviated cardiac apoptosis and fibrosis, promoted angiogenesis, T helper 2 cytokine production, and M2 macrophage polarization in the post\u2010MI heart, it also enhanced the tube formation and migration ability of endothelial cells. Enhanced Akt phosphorylation, along with the increased vascular endothelial growth factor levels were observed in presence of YY1 overexpression.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec xml:lang=\"en\">\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p xml:lang=\"en\">YY1 ameliorates cardiac injury and remodeling after MI by repressing cardiomyocyte apoptosis and boosting angiogenesis, which might be ascribed to the enhancement of Akt phosphorylation and the subsequent vascular endothelial growth factor up\u2010regulation. Increased T helper 2 cytokine production and M2 macrophage polarization may also be involved in YY1\u2019s cardioprotective effects. These findings supported YY1 as a potential target for therapeutic investigation of MI.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1161\/jaha.121.021895","type":"journal-article","created":{"date-parts":[[2021,10,29]],"date-time":"2021-10-29T05:06:54Z","timestamp":1635484014000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":17,"title":["The Protective Role of Yin\u2010Yang 1 in Cardiac Injury and Remodeling After Myocardial Infarction"],"prefix":"10.1161","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1500-0989","authenticated-orcid":false,"given":"Yu","family":"Huang","sequence":"first","affiliation":[{"name":"Department of Cardiology Daping Hospital Third Military Medical University Chongqing P. R. 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