PMID- 34581005 OWN - NLM STAT- MEDLINE DCOM- 20220316 LR - 20220316 IS - 1582-4934 (Electronic) IS - 1582-1838 (Print) IS - 1582-1838 (Linking) VI - 25 IP - 21 DP - 2021 Nov TI - Interleukin-7 aggravates myocardial ischaemia/reperfusion injury by regulating macrophage infiltration and polarization. PG - 9939-9952 LID - 10.1111/jcmm.16335 [doi] AB - Interleukin (IL)-7 is known to enhance the macrophages cytotoxic activity and that macrophages play a pivotal role in the development and progression of myocardial ischaemia/reperfusion (I/R) injury. However, the effects of IL-7 on macrophages infiltration and polarization in myocardial I/R injury are currently unclear. This study aimed to evaluate the effects of the IL-7 expression on myocardial I/R injury and their relationship with macrophages. The data showed that IL-7 expression in mouse heart tissue increases following I/R injury and that IL-7 knockout or anti-IL-7 antibody treatment significantly improve I/R injury, including reduction in myocardial infarction area, a serum troponin T level decreases and an improvement in cardiac function. On the other hand, recombinant IL-7 (rIL-7) supplementation induces opposite effects and the anti-IL-7 antibody significantly reduces the cardiomyocyte apoptosis and macrophage infiltration. rIL-7 cannot directly cause apoptosis, but it can induce cardiomyocyte apoptosis through macrophages, in addition to increase the macrophages migration in vitro. Anti-IL-7 antibody affects the cytokine production in T helper (Th) 1 and Th2 cells and also promotes the macrophages differentiation to M2 macrophages. However, anti-IL-7 antibody does not reduce the M1 macrophage number, and it only increases the ratio of M2/M1 macrophages in mice heart tissues after I/R injury. Taking together, these data reveal that IL-7 plays an intensifying role in myocardial I/R injury by promoting cardiomyocyte apoptosis through the regulation of macrophage infiltration and polarization. CI - (c) 2021 The Authors. Journal of Cellular and Molecular Medicine published by Foundation for Cellular and Molecular Medicine and John Wiley & Sons Ltd. FAU - Yan, Mengwen AU - Yan M AD - Department of Cardiology, China-Japan Friendship Hospital, Beijing, China. FAU - Yang, Yaliu AU - Yang Y AD - Department of Cardiology, China-Japan Friendship Hospital, Beijing, China. FAU - Zhou, Ying AU - Zhou Y AD - Department of Cardiology, China-Japan Friendship Hospital, Beijing, China. FAU - Yu, Changan AU - Yu C AD - Central Laboratory of Cardiovascular Disease, China-Japan Friendship Hospital, Beijing, China. FAU - Li, Rui AU - Li R AD - Department of Health Care, China-Japan Freindship Hospital, Ministry of Health, Beijing, China. FAU - Gong, Wei AU - Gong W AUID- ORCID: 0000-0002-3298-7001 AD - Emergency and Critical Care Center, Beijing Anzhen Hospital Capital Medical University, Beijing, China. AD - Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing, China. FAU - Zheng, Jingang AU - Zheng J AD - Department of Cardiology, China-Japan Friendship Hospital, Beijing, China. AD - Department of Cardiology, China-Japan Friendship School of Clinical Medicine, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China. AD - Department of Cardiology, Peking University China-Japan Friendship School of Clinical Medicine, Beijing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210928 PL - England TA - J Cell Mol Med JT - Journal of cellular and molecular medicine JID - 101083777 RN - 0 (Biomarkers) RN - 0 (Interleukin-7) SB - IM MH - Animals MH - Apoptosis/genetics MH - Biomarkers MH - Disease Models, Animal MH - Disease Susceptibility MH - Gene Expression MH - Heart Function Tests MH - Hemodynamics MH - Immunophenotyping MH - Interleukin-7/genetics/*metabolism MH - Macrophage Activation/*immunology MH - Macrophages/*immunology/*metabolism/pathology MH - Mice MH - Mice, Knockout MH - Myocardial Reperfusion Injury/diagnosis/*etiology/*metabolism MH - Myocytes, Cardiac/metabolism PMC - PMC8572772 OTO - NOTNLM OT - interleukin-7 OT - ischaemia/reperfusion injury OT - macrophage OT - myocardial COIS- None. EDAT- 2021/09/29 06:00 MHDA- 2022/03/17 06:00 PMCR- 2021/11/01 CRDT- 2021/09/28 07:01 PHST- 2020/12/23 00:00 [revised] PHST- 2020/09/08 00:00 [received] PHST- 2020/12/28 00:00 [accepted] PHST- 2021/09/29 06:00 [pubmed] PHST- 2022/03/17 06:00 [medline] PHST- 2021/09/28 07:01 [entrez] PHST- 2021/11/01 00:00 [pmc-release] AID - JCMM16335 [pii] AID - 10.1111/jcmm.16335 [doi] PST - ppublish SO - J Cell Mol Med. 2021 Nov;25(21):9939-9952. doi: 10.1111/jcmm.16335. Epub 2021 Sep 28.