Hepatic Forkhead Box Protein A3 Regulates ApoA-I (Apolipoprotein A-I) Expression, Cholesterol Efflux, and Atherogenesis
Overview
Affiliations
Objective: To determine the role of hepatic FOXA3 (forkhead box A3) in lipid metabolism and atherosclerosis. Approach and Results: Hepatic FOXA3 expression was reduced in diabetic or high fat diet-fed mice or patients with nonalcoholic steatohepatitis. We then used adenoviruses to overexpress or knock down hepatic FOXA3 expression. Overexpression of FOXA3 in the liver increased hepatic ApoA-I (apolipoprotein A-I) expression, plasma HDL-C (high-density lipoprotein cholesterol) level, macrophage cholesterol efflux, and macrophage reverse cholesterol transport. In contrast, knockdown of hepatic FOXA3 expression had opposite effects. We further showed that FOXA3 directly bound to the promoter of the Apoa1 gene to regulate its transcription. Finally, AAV8 (adeno-associated virus serotype 8)-mediated overexpression of human FOXA3 in the hepatocytes of Apoe (apolipoprotein E-deficient) mice raised plasma HDL-C levels and significantly reduced atherosclerotic lesions.
Conclusions: Hepatocyte FOXA3 protects against atherosclerosis by inducing ApoA-I and macrophage reverse cholesterol transport.
Loss of adipose ATF3 promotes adipose tissue lipolysis and the development of MASH.
Hu S, Cassim Bawa F, Zhu Y, Pan X, Wang H, Gopoju R Commun Biol. 2024; 7(1):1300.
PMID: 39390075 PMC: 11467330. DOI: 10.1038/s42003-024-06915-x.
Li G, Zhu L, Guo M, Wang D, Meng M, Zhong Y JHEP Rep. 2023; 5(12):100906.
PMID: 38023606 PMC: 10679869. DOI: 10.1016/j.jhepr.2023.100906.
Lee Y, Park J, Lee M, Mifflin R, Xu Y, Novak R J Lipid Res. 2023; 64(11):100454.
PMID: 37827334 PMC: 10665942. DOI: 10.1016/j.jlr.2023.100454.
Hepatic Energy Metabolism under the Local Control of the Thyroid Hormone System.
Seifert J, Chen Y, Schoning W, Mai K, Tacke F, Spranger J Int J Mol Sci. 2023; 24(5).
PMID: 36902289 PMC: 10002997. DOI: 10.3390/ijms24054861.
The role of FOXA family transcription factors in glucolipid metabolism and NAFLD.
Yu C, Li X, Zhao Y, Hu Y Front Endocrinol (Lausanne). 2023; 14:1081500.
PMID: 36798663 PMC: 9927216. DOI: 10.3389/fendo.2023.1081500.