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. 2016 Jan 5;7(1):23-32.
doi: 10.18632/oncotarget.6627.

Association study of polymorphisms in FOXO3, AKT1 and IGF-2R genes with human longevity in a Han Chinese population

Ning Li  1   2   3 , Huaichao Luo  1   3 , Xiaoqi Liu  1   3 , Shi Ma  1   3 , He Lin  1   3 , Rong Chen  1   3 , Fang Hao  1   3 , Dingding Zhang  1   4
Affiliations

Association study of polymorphisms in FOXO3, AKT1 and IGF-2R genes with human longevity in a Han Chinese population

Ning Li et al. Oncotarget. .

Abstract

FOXO3, AKT1 and IGF-2R are critical members of the insulin/IGF-1 signaling pathway. Previous studies showed that polymorphisms (SNPs) in FOXO3, AKT1 and IGF-2R were associated with human longevity in Caucasian population. However, the association of these SNPs in different ethnic groups is often inconsistent. Here, we investigated the association of genetic variants in three genes with human longevity in Han Chinese population. Twelve SNPs from FOXO3, AKT1 and IGF-2R were selected and genotyped in 1202 long-lived individuals (nonagenarians and centenarians) and younger individuals. Rs9486902 of FOXO3 was found to be associated with human longevity in both genders combined in this study (allelic P = 0.002, corrected P = 0.024). The other eleven SNPs were not significantly associated with human longevity in Han Chinese population. The haplotypes TTCTT, CCTTC and CTCCT of FOXO3 as well as GGTCGG and GGTCAG of AKT1 were shown to have a significant difference between case and control (P =0.006, 2.78×10-5, 4.68×10-6, 0.003,0.005, respectively). The estimated prevalence of diabetes and prediabetes in long-lived individuals was significantly lower than in common adult populations (P = 0.001, 2.3×10-26) .Therefore, the search for longevity-associated genes provides the identification of new potential targets beneficial for the treatment of diabetes.

Keywords: AKT1; FOXO3; Gerotarget; IGF-2R; human longevity; single nucleotide polymorphism (SNP).

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Conflict of interest statement

CONFLICTS OF INTEREST

All of authors declare that they have no competing interests.

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