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He J, Liu K, Zheng S, Wu Y, Zhao C, Yan S, Liu L, Ruan K, Ma X, Fu C. The Acyl-CoA-Binding Protein Acb1 regulates mitochondria, lipid droplets, and cell proliferation. FEBS Lett 2022; 596:1795-1808. [PMID: 35658118 DOI: 10.1002/1873-3468.14415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 05/14/2022] [Accepted: 05/30/2022] [Indexed: 11/07/2022]
Abstract
Mitochondria are involved in many cellular activities, including energy metabolism and biosynthesis of nucleotides, fatty acids, and amino acids. Mitochondrial morphology is a key factor in dictating mitochondrial functions. Here, we report that the acyl-CoA binding protein Acb1 in the fission yeast Schizosaccharomyces pombe is required for the maintenance of tubular mitochondrial morphology and proper mitochondrial respiration. The absence of Acb1 causes severe mitochondrial fragmentation in a dynamin-related protein Dnm1-dependent manner and impairs mitochondrial respiration. Moreover, Acb1 regulates the remodeling of lipid droplets in nutrient-rich conditions. Importantly, Acb1 promotes cell survival when cells are cultured in nutrient-rich medium. Hence, our findings establish roles of acyl-CoA binding proteins in regulating mitochondria, lipid droplets, and cell viability.
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Affiliation(s)
- Jiajia He
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Ke Liu
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Shengnan Zheng
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Yifan Wu
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Chenhui Zhao
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Shuaijie Yan
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Ling Liu
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Ke Ruan
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
| | - Xiaopeng Ma
- Department of General Surgery, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, People's Republic of China
| | - Chuanhai Fu
- MOE Key Laboratory for Cellular Dynamics & School of Life Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China, 230027
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