Effect of the insulin on the apolipoprotein a-i gene expression in human macrophages
- Authors: Nekrasova E.V.1, Danko K.V.2, Shavva V.S.1, Dizhe E.B.1, Oleinikova G.N.1, Orlov S.V.1,2
-
Affiliations:
- Institute of Experimental Medicine
- Saint Petersburg State University
- Issue: Vol 20, No 1 (2020)
- Pages: 65-74
- Section: Original research
- URL: https://journals.rcsi.science/MAJ/article/view/16437
- DOI: https://doi.org/10.17816/MAJ16437
- ID: 16437
Cite item
Abstract
The aim of the article — to study the effect of insulin on apolipoprotein A-I gene expression level in human macrophages and to reveal the main signal cascades which take part in the insulin-mediated regulation of apolipoprotein A-I gene.
Materials and methods. The experiments were carried out on the macrophages differentiated from acute monocytic leukemia cell line THP-1 and on the macrophages differentiated from the monocytes isolated from peripheral human blood. The analysis of apoA-I gene expression was performed by RealTime RT-PCR (on the mRNA level) and by flow cytofluorometry. To study the signalling cascades which take part in the insulin-mediated regulation of apoA-I gene the inhibitory analysis was used.
Results. Insulin induces the human apoA-I gene transcription in macrophages, but decreases the level of the ApoA-I protein which binds to outer cytoplasmic membrane of macrophages. The insulin-mediated transcription of apoA-I gene depends on PI3K-AKT signal cascade and transcription factors NF-κB and LXRs.
Conclusions. Taking into account our previous data it is plausible to conclude that the elevation of ApoA-I mRNA in human macrophages after insulin treatment leads to an increase of the amplitude of macrophages anti-inflammatory response, which consists in a sharp rise in the level of surface ApoA-I in macrophages under the some proinflammatory stimuli (TNFα, LPS).
Keywords
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##article.viewOnOriginalSite##About the authors
Ekaterina V. Nekrasova
Institute of Experimental Medicine
Email: nekrasova@iem.sp.ru
scientist, Department of Biochemistry
Russian Federation, Saint PetersburgKaterina V. Danko
Saint Petersburg State University
Email: danko@iem.sp.ru
student, Biological faculty, department of Biochemistry
Kazakhstan, Saint PetersburgVladimir S. Shavva
Institute of Experimental Medicine
Email: shavva@iem.sp.ru
SPIN-code: 5428-6800
PhD, senior scientist, Department of Biochemistry
Russian Federation, Saint PetersburgElla B. Dizhe
Institute of Experimental Medicine
Email: dizhe@iem.sp.ru
PhD, leading scientist, Department of Biochemistry
Russian Federation, Saint PetersburgGalina N. Oleinikova
Institute of Experimental Medicine
Email: galina@iem.sp.ru
technical assistant, Department of Biochemistry
Russian Federation, Saint PetersburgSergey V. Orlov
Institute of Experimental Medicine; Saint Petersburg State University
Author for correspondence.
Email: serge@iem.sp.ru
ORCID iD: 0000-0002-3134-1989
SPIN-code: 1690-8110
Scopus Author ID: 7201920413
ResearcherId: N-6823-2014
PhD, senior scientist, department of Biochemistry (IEM); associate professor, Biological faculty, department of Embryology (SpbSU).
Russian Federation, Saint PetersburgReferences
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