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Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1
BACKGROUND AND AIMS: NAFLD is a progressive disease without known effective drug treatments. Switch‐associated protein 70 (SWAP70) is a guanine nucleotide exchange factor that participates in the regulation of many cellular processes. However, the role of SWAP70 in NAFLD remains unclear. This study...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9321549/ https://www.ncbi.nlm.nih.gov/pubmed/34689362 http://dx.doi.org/10.1002/hep.32213 |
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author | Qian, Qiaofeng Li, Yang Fu, Jiajun Leng, Dewen Dong, Zhe Shi, Jiajun Shi, Hongjie Cao, Dengwei Cheng, Xu Hu, Yufeng Luo, Qiujie Hu, Manli Ran, Yong Tang, Hao Liu, Hui Liu, Jinping |
author_facet | Qian, Qiaofeng Li, Yang Fu, Jiajun Leng, Dewen Dong, Zhe Shi, Jiajun Shi, Hongjie Cao, Dengwei Cheng, Xu Hu, Yufeng Luo, Qiujie Hu, Manli Ran, Yong Tang, Hao Liu, Hui Liu, Jinping |
author_sort | Qian, Qiaofeng |
collection | PubMed |
description | BACKGROUND AND AIMS: NAFLD is a progressive disease without known effective drug treatments. Switch‐associated protein 70 (SWAP70) is a guanine nucleotide exchange factor that participates in the regulation of many cellular processes. However, the role of SWAP70 in NAFLD remains unclear. This study aimed to identify the function and mechanism of SWAP70 in NAFLD. APPROACH AND RESULTS: The results showed that the expression of SWAP70 was significantly increased in mice and hepatocytes after metabolic stimulation. Overexpression of SWAP70 in hepatocytes suppressed lipid deposition and inflammation, and SWAP70 knockdown created the inverse effect. Using hepatocyte‐specific Swap70 knockout and overexpression mice fed a high‐fat, high‐cholesterol diet, we demonstrated that SWAP70 suppressed the progression of nonalcoholic steatohepatitis by inhibiting lipid accumulation, inflammatory response, and fibrosis. Mechanically, RNA sequencing analysis and immunoprecipitation assays revealed that SWAP70 inhibited the interaction between transforming growth factor β‐activated kinase 1 (TAK1) binding protein 1 and TAK1 and sequentially suppressed the phosphorylation of TAK1 and subsequent c‐Jun N‐terminal kinase/P38 signaling. Inhibition of TAK1 activation blocked hepatocyte lipid deposition and inflammation caused by SWAP70 knockdown. CONCLUSIONS: SWAP70 is a protective molecule that can suppress the progression of NAFLD by inhibiting hepatic steatosis and inflammation. SWAP70 may be important for mitigating the progression of NAFLD. |
format | Online Article Text |
id | pubmed-9321549 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-93215492022-07-30 Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 Qian, Qiaofeng Li, Yang Fu, Jiajun Leng, Dewen Dong, Zhe Shi, Jiajun Shi, Hongjie Cao, Dengwei Cheng, Xu Hu, Yufeng Luo, Qiujie Hu, Manli Ran, Yong Tang, Hao Liu, Hui Liu, Jinping Hepatology Original Articles BACKGROUND AND AIMS: NAFLD is a progressive disease without known effective drug treatments. Switch‐associated protein 70 (SWAP70) is a guanine nucleotide exchange factor that participates in the regulation of many cellular processes. However, the role of SWAP70 in NAFLD remains unclear. This study aimed to identify the function and mechanism of SWAP70 in NAFLD. APPROACH AND RESULTS: The results showed that the expression of SWAP70 was significantly increased in mice and hepatocytes after metabolic stimulation. Overexpression of SWAP70 in hepatocytes suppressed lipid deposition and inflammation, and SWAP70 knockdown created the inverse effect. Using hepatocyte‐specific Swap70 knockout and overexpression mice fed a high‐fat, high‐cholesterol diet, we demonstrated that SWAP70 suppressed the progression of nonalcoholic steatohepatitis by inhibiting lipid accumulation, inflammatory response, and fibrosis. Mechanically, RNA sequencing analysis and immunoprecipitation assays revealed that SWAP70 inhibited the interaction between transforming growth factor β‐activated kinase 1 (TAK1) binding protein 1 and TAK1 and sequentially suppressed the phosphorylation of TAK1 and subsequent c‐Jun N‐terminal kinase/P38 signaling. Inhibition of TAK1 activation blocked hepatocyte lipid deposition and inflammation caused by SWAP70 knockdown. CONCLUSIONS: SWAP70 is a protective molecule that can suppress the progression of NAFLD by inhibiting hepatic steatosis and inflammation. SWAP70 may be important for mitigating the progression of NAFLD. John Wiley and Sons Inc. 2022-04-25 2022-06 /pmc/articles/PMC9321549/ /pubmed/34689362 http://dx.doi.org/10.1002/hep.32213 Text en © 2022 The Authors. Hepatology published by Wiley Periodicals LLC on behalf of American Association for the Study of Liver Diseases. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Original Articles Qian, Qiaofeng Li, Yang Fu, Jiajun Leng, Dewen Dong, Zhe Shi, Jiajun Shi, Hongjie Cao, Dengwei Cheng, Xu Hu, Yufeng Luo, Qiujie Hu, Manli Ran, Yong Tang, Hao Liu, Hui Liu, Jinping Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 |
title | Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 |
title_full | Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 |
title_fullStr | Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 |
title_full_unstemmed | Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 |
title_short | Switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of TAK1 |
title_sort | switch‐associated protein 70 protects against nonalcoholic fatty liver disease through suppression of tak1 |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9321549/ https://www.ncbi.nlm.nih.gov/pubmed/34689362 http://dx.doi.org/10.1002/hep.32213 |
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