TRANSCRIPTOMICS RESEARCH IN THE CLINICAL AND EXPERIMENTAL INVESTIGATION OF PATHOGENETIC MECHANISMS OF ALIMENTARY OBESITY

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Abstract

The review considers the significant role of changes in the transcriptome of organs and tissues for studying the molecular mechanisms of obesity development. Modern methods of transcriptomics including technologies for quantitative RT-PCR and DNA microarrays provided a new approach to the search for sensitive molecular markers as obesity predictors Differential gene expression profiles are mostly organo- and tissue-specific for adipose tissue, liver, brain, and other organs and tissues; can significantly differ in animal in vivo models with genetically determined and dietary induced obesity. At the same time, coordinated regulation is registered in the organs and tissues of expression of extensive groups of genes associated with lipid, cholesterol, and carbohydrate metabolism, the synthesis and circulation of neurotransmitters of dopamine and serotonin, peptide hormones, cytokines which induce systemic inflammation. For systemic regulation mechanisms causing a concerted change in the transcription of tens and hundreds of genes in obesity, the adipokines effects should be pointed out, primarily leptin, as well as pro-inflammatory cytokines, the micro-RNA (miRs) system and central effects developing at NPY/AgRP+ and POMC/CART+ neurons of the arcuate nucleus of the hypothalamus. Results of transcriptomic studies can be used in preclinical trials of new drugs and methods of dietary correction of obesity in animal’s in vivo models, as well as in the search for clinical predictors and markers of metabolic abnormalities in patients with obesity receiving personalized therapy. The main problem of transcriptomic studies in in vivo models is incomplete consistency between the data obtained with full-transcriptional profiling and the results of quantitative RT-PCR expression of individual candidate genes, as well as metabolic and proteomic studies. The identification and elimination of the causes of such discrepancies can be one of the promising areas for improving transcriptomical research.

About the authors

I. V. Gmoshinski

Federal Research Centre of Nutrition, Biotechnology and Food Safety

Author for correspondence.
Email: gmosh@ion.ru
ORCID iD: 0000-0002-3671-6508

IvanV. Gmoshinski– PhD.

Moscow

Russian Federation

S. A. Apryatin

Federal Research Centre of Nutrition, Biotechnology and Food Safety

Email: apryatin@mail.ru
ORCID iD: 0000-0002-6543-7495

SergeyA. Apryatin– PhD.

Moscow

Russian Federation

Kh. Kh. Sharafetdinov

Federal Research Centre of Nutrition, Biotechnology and Food Safety

Email: sharafandr@mail.ru
ORCID iD: 0000-0001-6061-0095

Khayder’ Kh. Sharafetdinov - MD, PhD, Professor.

Moscow

Russian Federation

D. B. Nikitjuk

Federal Research Centre of Nutrition, Biotechnology and Food Safety

Email: dimitrynik@mail.ru
ORCID iD: 0000-0002-4968-4517

Dmitriy B. Nikityuk - MD, PhD, Professor.

Moscow

Russian Federation

V. A. Tutelyan

Federal Research Centre of Nutrition, Biotechnology and Food Safety

Email: tutelyan@ion.ru
ORCID iD: 0000-0002-4164-8992

Victor A. Tutelyan - MD, PhD, Professor.

Moscow

Russian Federation

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