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Li Z, Zeng S, Du Q, Li X, Chen Q, Zhang S, Zhou X, Li H, Jiang A, Wang X, Shang P, Li M, Long K. The repression of the lipolytic inhibitor G0s2 enhancers affects lipid metabolism. Gene 2025; 938:149162. [PMID: 39667714 DOI: 10.1016/j.gene.2024.149162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2024] [Revised: 11/25/2024] [Accepted: 12/09/2024] [Indexed: 12/14/2024]
Abstract
The G0/G1 switch gene 2 (G0s2) is a selective inhibitor of adipose triglyceride lipase (ATGL) which is the rate-limiting enzyme for triglycerides (TGs) hydrolysis in adipocytes, and regulates the mobilization of TGs in adipocytes and hepatocytes. The expression and functional disorders of G0S2 are associated with various metabolic diseases and related pathological states, such as obesity and metabolic syndrome and non-alcoholic fatty liver disease (NAFLD). However, the extent to which the transcriptional regulatory mechanisms mediated by the interaction between the G0s2 gene promoter and enhancer regions are involved remains unknown. Here, through the analysis of epigenomic data (H3K27ac, H3K4me1, and DHS-seq) and luciferase reporter assays, we identified three active enhancers of G0s2 in 3 T3-L1 adipocytes. Subsequently, using the dCas9-KRAB system for epigenetic inhibition of G0S2-En2, -En4, and -En5 revealed the functional role of these enhancers in regulating G0s2 expression and lipid droplet biosynthesis. Additionally, transcriptome analyses revealed that inhibition of G0S2-En5 downregulated pathways associated with lipid metabolism and lipid biosynthesis. Furthermore, overexpression of transcription factors (TFs) and motif mutation experiments identified that PPARG and RXRA regulate the activity of G0S2-En5. Taken together, we identified functional enhancers regulating G0s2 expression and elucidated the important role of the G0S2-En5 in lipid droplet biogenesis.
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Affiliation(s)
- Ziqi Li
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Sha Zeng
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Qinjiao Du
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaokai Li
- Chongqing Academy of Animal Sciences, Chongqing 402460, China; National Center of Technology Innovation for Pigs, Chongqing 402460, China
| | - Qiuyue Chen
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Songling Zhang
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xun Zhou
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Haohuan Li
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Anan Jiang
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xun Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Peng Shang
- Animal Science College, Tibet Agriculture and Animal Husbandry University, Linzhi, 860000, China
| | - Mingzhou Li
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China.
| | - Keren Long
- State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China; College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China; Chongqing Academy of Animal Sciences, Chongqing 402460, China; National Center of Technology Innovation for Pigs, Chongqing 402460, China.
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Suzuki T, Koshikawa S. Enhancer functions underlying morphological diversity. Dev Growth Differ 2020; 62:263-264. [PMID: 32479642 DOI: 10.1111/dgd.12685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takayuki Suzuki
- Avian Bioscience Research Center, Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Shigeyuki Koshikawa
- Faculty of Environmental Earth Science, Hokkaido University, Sapporo, Japan.,Graduate School of Environmental Science, Hokkaido University, Sapporo, Japan
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