Proteomic analysis of ferroptosis pathways reveals a role of CEPT1 in suppressing ferroptosis

  • Xiaoguang Liu 1 ,
  • Zhen Chen 1 ,
  • Yuelong Yan 1 ,
  • Fereshteh Zandkarimi 2 ,
  • Litong Nie 1 ,
  • Qidong Li 1 ,
  • Amber Horbath 1 ,
  • Kellen Olszewski 3,5 ,
  • Lavanya Kondiparthi 3 ,
  • Chao Mao 1 ,
  • Hyemin Lee 1 ,
  • Li Zhuang 1 ,
  • Masha Poyurovsky 3 ,
  • Brent R. Stockwell 2 ,
  • Junjie Chen , 1,4 ,
  • Boyi Gan , 1,4
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  • 1. Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
  • 2. Department of Biological Sciences and Department of Chemistry, Columbia University, New York, NY 10027, USA
  • 3. Kadmon Corporation, LLC (A Sanofi Company), New York, NY 10016, USA
  • 4. The University of Texas MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
  • 5. Present address: The Barer Institute, Philadelphia, PA 19104, USA
jchen8@mdanderson.org
bgan@mdanderson.org

Received date: 09 Oct 2023

Accepted date: 31 Jan 2024

Copyright

2024 The Author(s) 2024. Published by Oxford University Press on behalf of Higher Education Press.

Abstract

Ferroptosis has been recognized as a unique cell death modality driven by excessive lipid peroxidation and unbalanced cellular metabolism. In this study, we established a protein interaction landscape for ferroptosis pathways through proteomic analyses, and identified choline/ethanolamine phosphotransferase 1 (CEPT1) as a lysophosphatidylcholine acyltransferase 3 (LPCAT3)-interacting protein that regulates LPCAT3 protein stability. In contrast to its known role in promoting phospholipid synthesis, we showed that CEPT1 suppresses ferroptosis potentially by interacting with phospholipases and breaking down certain pro-ferroptotic polyunsaturated fatty acid (PUFA)-containing phospholipids. Together, our study reveals a previously unrecognized role of CEPT1 in suppressing ferroptosis.

Cite this article

Xiaoguang Liu , Zhen Chen , Yuelong Yan , Fereshteh Zandkarimi , Litong Nie , Qidong Li , Amber Horbath , Kellen Olszewski , Lavanya Kondiparthi , Chao Mao , Hyemin Lee , Li Zhuang , Masha Poyurovsky , Brent R. Stockwell , Junjie Chen , Boyi Gan . Proteomic analysis of ferroptosis pathways reveals a role of CEPT1 in suppressing ferroptosis[J]. Protein & Cell, 2024 , 15(9) : 686 -703 . DOI: 10.1093/procel/pwae004

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