Mechanisms of the influence of adiponectin on apolipoproteins A-1 and B production by human hepatocytes
- Authors: Tanyanskiy D.A.1, Dizhe E.B.1, Oleinikova G.N.1, Shavva V.S.1, Denisenko A.D.1
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Affiliations:
- Institute of Experimental Medicine
- Issue: Vol 21, No 1 (2021)
- Pages: 39-45
- Section: Original research
- URL: https://bakhtiniada.ru/MAJ/article/view/62892
- DOI: https://doi.org/10.17816/MAJ62892
- ID: 62892
Cite item
Abstract
The aim of the study was to find out the mechanisms of the adiponectin effect on apolipoproteins (apo) A-1 and B production by human hepatocytes.
Materials and methods. The study was performed on the human hepatoma cell line HepG2. The expression of the apoA-1 gene was evaluated at the mRNA level by quantitative PCR with reverse transcription, and the production of apoB – by ELISA method. The activity of lipogenesis was assessed by the inclusion of labeled 14C-acetate in triglycerides, as well as by mRNA expression of lipogenesis genes, and by the estimation of total triglycerides content in cells. To determine the involvement of signaling pathways, the RNA interference method was used.
Results. Knockdown of genes, coding the specific receptors, AMP-activated protein kinase, and its regulated transcription factors inhibited adiponectin-dependent stimulation of apoA-1 gene expression in hepatocytes. Adiponectin had no effect on lipogenesis and apoB production under basal conditions, but suppressed these processes induced by the addition of oleate.
Conclusion. Adiponectin stimulates the production of apoA-1 in hepatocytes by inducing the transcription of the apoA-1 gene and suppresses the secretion of apoB by affecting lipogenesis. These effects may underlie the effect of adiponectin on lipoproteins metabolism.
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##article.viewOnOriginalSite##About the authors
Dmitriy A. Tanyanskiy
Institute of Experimental Medicine
Author for correspondence.
Email: dmitry.athero@gmail.com
ORCID iD: 0000-0002-5321-8834
SPIN-code: 9303-9445
MD, PhD (Medicine), Head of Laboratory of Lipoproteins, Department of Biochemistry
Russian Federation, Saint PetersburgElla B. Dizhe
Institute of Experimental Medicine
Email: dizhe@iem.sp.ru
ORCID iD: 0000-0001-5147-4749
SPIN-code: 1625-0496
MD, PhD (Biology), Leading Researcher, Department of Biochemistry
Russian Federation, Saint PetersburgGalina N. Oleinikova
Institute of Experimental Medicine
Email: galina@iem.sp.ru
Research Assistant, Department of Biochemistry
Russian Federation, Saint PetersburgVladimir S. Shavva
Institute of Experimental Medicine
Email: vssreinard.fox@gmail.com
SPIN-code: 5428-6800
MD, PhD (Biology), Senior Researcher, Department of Biochemistry
Russian Federation, Saint PetersburgAleksandr D. Denisenko
Institute of Experimental Medicine
Email: add@iem.sp.ru
ORCID iD: 0000-0003-1613-0654
SPIN-code: 7496-1449
MD, PhD, DSc (Medicine), Professor, Head of Department of Biochemistry
Russian Federation, Saint PetersburgReferences
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