Association of Polymorphisms in Innate Immunity Genes TLR9 and DEFB1 with Human Longevity

Bull Exp Biol Med. 2015 May;159(1):77-80. doi: 10.1007/s10517-015-2894-9. Epub 2015 Jun 2.

Abstract

The distribution of polymorphic variants of innate immunity genes TLR9 (+2848G>A) and DEFB1(-20G>A; -44C>G; -52G>A) was evaluated in long-living individuals. No significant differences were found in the distribution of genotypes and alleles of the TLR9 gene. The following features were revealed: increase in the frequency of AA and GG genotypes and decrease in the frequency of the AG genotype of the DEFB1(-20G>A) gene; increase in the frequency of the CC genotype and C allele and decrease in the frequency of CG and GG genotypes and G allele of the DEFB1(44C>G) gene; and increase in the frequency of AA and AG genotypes and A allele and decrease in the frequency of the GG genotypes and G allele of the DEFB1(-52G>A) gene. Genotypes and alleles of the DEFB1 gene found in long-living individuals can be considered as the factors that increase the probability of longevity and favorable course of age-related diseases.

MeSH terms

  • Adult
  • Aged, 80 and over
  • Aging
  • Alleles
  • DNA / genetics
  • Gene Frequency / genetics
  • Humans
  • Immunity, Innate / genetics
  • Longevity / genetics*
  • Middle Aged
  • Polymorphism, Single Nucleotide / genetics
  • Signal Transduction / genetics
  • Signal Transduction / immunology
  • Toll-Like Receptor 9 / genetics*
  • Young Adult
  • beta-Defensins / genetics*

Substances

  • DEFB1 protein, human
  • TLR9 protein, human
  • Toll-Like Receptor 9
  • beta-Defensins
  • DNA