PTPMT1 protects cardiomyocytes from necroptosis induced by γ-ray irradiation through alleviating mitochondria injury

Author:

Yi Jing12,Yue Liang3,Zhang Yuning24ORCID,Tao Ning12,Duan Han25,Lv Lin2,Tan Yingxia3ORCID,Wang Hua125ORCID

Affiliation:

1. College of Life Science, Anhui Medical University, Hefei, People’s Republic of China

2. Department of Experimental Haematology, Beijing Institute of Radiation Medicine, Beijing, People’s Republic of China

3. Department of Stem Cell and Regenerative Medicine, Institute of Health Service and Transfusion Medicine, Beijing, People’s Republic of China

4. Department of Oncology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing, People’s Republic of China

5. School of Life Sciences, Hebei University, Baoding, People’s Republic of China

Abstract

Effective strategies are still lacking for treating RIHD, with unclear pathological mechanisms. In cardiomyocytes model of radiation-induced injuries, we found γ-ray irradiation decreased the expression of PTPMT1, increased oxidative stress, and induced mitochondrial dysfunction and necroptosis in iPSC-CMs. ROS inhibition attenuated radiation-induced mitochondrial damage and necroptosis. PTPMT1 protected cardiomyocytes from necroptosis induced by γ-ray irradiation by alleviating mitochondrial injury. Therefore, PTPMT1 might be a potential strategy for treating RIHD.

Funder

Scientific Research Project, China

Publisher

American Physiological Society

Subject

Cell Biology,Physiology

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