Increased Frequencies of the ‒174G and ‒572C IL6 Alleles in Populations of Indigenous Peoples of Siberia Compared to Russians

L E Tabikhanova; L P Osipova; T V Churkina; S S Kovalev; M L Filipenko; E N Voronina

doi:10.1134/S002689332302019X

Increased Frequencies of the ‒174G and ‒572C IL6 Alleles in Populations of Indigenous Peoples of Siberia Compared to Russians

Mol Biol. 2023;57(2):329-337. doi: 10.1134/S002689332302019X. Epub 2023 Apr 26.

Authors

L E Tabikhanova¹, L P Osipova¹, T V Churkina¹, S S Kovalev¹, M L Filipenko², E N Voronina²

Affiliations

¹ Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.
² Institute of Chemical Biology and Fundamental Medicine, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia.

Abstract

Abstract-The study of immune response and inflammation gene polymorphisms in a genogeographic context is relevant in the study of human populations. Here, in the indigenous populations of Siberia the frequencies of polymorphic variants ‒174G/C (rs1800795) and ‒572C/G (rs1800796) of the IL6 gene encoding the proinflammatory cytokine IL-6 were determined. For the first time, it was shown that the frequencies of the ‒174G and ‒572C alleles, which determine increased inflammatory response and are also associated with several diseases were statistically significantly higher in ethnic groups of Buryats, Teleuts, Yakuts, Dolgans and Tuvinians than in Russians living in Siberia. These values were in the intermediate position between those in the European and East-Asian groups. We hypothesize an adaptive role of these IL6 genetic variants in human settlement from Africa to the Eurasian continent. However, due to the departure from the traditional way of life and the increasing anthropogenic environmental pollution, the risk of diseases whose pathogenesis is based on inflammation in indigenous Siberian populations is likely increased.

Keywords: Buryats; Dolgans; IL6; Russians; Siberian indigenous peoples; Teleuts; Tuvinians; Yakuts; cytokines; genetic polymorphism; real-time PCR; rs1800795; rs1800796.

© Pleiades Publishing, Inc. 2023, ISSN 0026-8933, Molecular Biology, 2023, Vol. 57, No. 2, pp. 329–337. © Pleiades Publishing, Inc., 2023.Russian Text © The Author(s), 2023, published in Molekulyarnaya Biologiya, 2023, Vol. 57, No. 2, pp. 350–359.