PMID- 38039836 OWN - NLM STAT- MEDLINE DCOM- 20240103 LR - 20240106 IS - 1090-2104 (Electronic) IS - 0006-291X (Linking) VI - 691 DP - 2024 Jan 8 TI - Progranulin-deficient macrophages cause cardiotoxicity under hypoxic conditions. PG - 149341 LID - S0006-291X(23)01435-3 [pii] LID - 10.1016/j.bbrc.2023.149341 [doi] AB - Myocardial infarction (MI) induces structural and electrical cardiac remodeling in response to ischemic insult, causing lethal arrhythmias and sudden death. Progranulin (PGRN) is a glycoprotein mainly expressed in macrophages that modulates the immune responses. In this study, we investigated the direct influence of PGRN knockout (Grn(-/-)) macrophages on post-MI pathophysiology. An MI mouse model was established by ligating the left coronary artery for RNA sequencing and electrocardiographic analysis. Bone marrow-derived macrophages (BMDMs) were injected into mice and supernatant was collected for the measurement of reactive oxygen species (ROS) levels and extracellular flux analysis. Administration of Grn(-/-) BMDMs prolonged the QT intervals in the MI mouse model. Moreover, genes highly expressed in macrophages were upregulated in Grn(-/-) heart after MI. Post-hypoxic supernatant of Grn(-/-) BMDMs increased the oxygen-glucose deprivation-induced cardiomyocyte death. Grn(-/-) BMDMs exhibited increased ROS production, oxygen consumption, and extracellular acidification under hypoxia and inflammatory conditions. These findings suggest that PGRN deficiency causes cardiotoxicity via secretory components of macrophages that exhibit metabolic abnormalities under hypoxia. CI - Copyright (c) 2023 Elsevier Inc. All rights reserved. FAU - Sasaki, Takahiro AU - Sasaki T AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan. FAU - Kuse, Yoshiki AU - Kuse Y AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan. FAU - Nakamura, Shinsuke AU - Nakamura S AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan. FAU - Shimazawa, Masamitsu AU - Shimazawa M AD - Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, Gifu, Japan. Electronic address: shimazawa@gifu-pu.ac.jp. LA - eng PT - Journal Article DEP - 20231128 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Progranulins) RN - 0 (Reactive Oxygen Species) SB - IM MH - Mice MH - Animals MH - Progranulins/metabolism MH - *Cardiotoxicity/metabolism MH - Reactive Oxygen Species/metabolism MH - Macrophages/metabolism MH - *Myocardial Infarction/metabolism MH - Myocytes, Cardiac/metabolism MH - Disease Models, Animal MH - Hypoxia/genetics/metabolism OTO - NOTNLM OT - Arrhythmia OT - Macrophage OT - Myocardial infarction OT - Progranulin COIS- Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Takahiro Sasaki reports financial support was provided by Japan Society for the Promotion of Science; KAKENHI. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/12/02 00:42 MHDA- 2024/01/03 09:42 CRDT- 2023/12/01 18:12 PHST- 2023/11/23 00:00 [received] PHST- 2023/11/24 00:00 [accepted] PHST- 2024/01/03 09:42 [medline] PHST- 2023/12/02 00:42 [pubmed] PHST- 2023/12/01 18:12 [entrez] AID - S0006-291X(23)01435-3 [pii] AID - 10.1016/j.bbrc.2023.149341 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2024 Jan 8;691:149341. doi: 10.1016/j.bbrc.2023.149341. Epub 2023 Nov 28.