2. Academic Validation
  3. Genome-wide screening in the haploid system reveals Slc25a43 as a target gene of oxidative toxicity

Genome-wide screening in the haploid system reveals Slc25a43 as a target gene of oxidative toxicity

  • Cell Death Dis. 2022 Mar 30;13(3):284. doi: 10.1038/s41419-022-04738-4.
Jinxin Zhang 1,  Yiding Zhao 1,  Yaru Tian 1,  Mengyang Geng 1,  Yan Liu 2,  Wenhao Zhang 3 4,  Ling Shuai 5 6
Affiliations

Affiliations

  • 1 State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, China.
  • 2 Department of Obstetrics, Tianjin First Central Hospital, Nankai University, Tianjin, 300192, China. 30819007@nankai.edu.cn.
  • 3 State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, China. whzhang@nankai.edu.cn.
  • 4 Chongqing Key Laboratory of Human Embryo Engineering, Chongqing Health Center for Women and Children, Chongqing, 400013, China. whzhang@nankai.edu.cn.
  • 5 State Key Laboratory of Medicinal Chemical Biology and College of Pharmacy, Nankai University, Tianjin, 300350, China. lshuai@nankai.edu.cn.
  • 6 Tianjin Central Hospital of Gynecology Obstetrics/Tianjin Key Laboratory of Human Development and Reproductive Regulation, Tianjin, 300052, China. lshuai@nankai.edu.cn.
PMID: 35354792 DOI: 10.1038/s41419-022-04738-4
Abstract

Reactive Oxygen Species (ROS) are extensively assessed in physiological and pathological studies; however, the genes and mechanisms involved in antioxidant reactions are elusive. To address this knowledge gap, we used a forward genetic approach with mouse haploid embryonic stem cells (haESCs) to generate high-throughput mutant libraries, from which numerous oxidative stress-targeting genes were screened out. We performed proof-of-concept experiments to validate the potential inserted genes. Slc25a43 (one of the candidates) knockout (KO) ESCs presented reduced damage caused by ROS and higher cell viability when exposed to H2O2. Subsequently, ROS production and mitochondrial function analysis also confirmed that Slc25a43 was a main target gene of oxidative toxicity. In addition, we identified that KO of Slc25a43 activated mitochondria-related genes including Nlrx1 to protect ESCs from oxidative damage. Overall, our findings facilitated revealing target genes of oxidative stress and shed lights on the mechanism underlying oxidative death.

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