Journal
EXPERIMENTAL GERONTOLOGY
Volume 43, Issue 10, Pages 962-965Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.exger.2008.08.004
Keywords
Longevity; IGF-1; Association study; SNPs; Han Chinese population
Categories
Funding
- National Basic Research Program of China [2007CB507405]
- Chinese Academy of Sciences
- National Natural Science Foundation of China [30621092]
- Bureau of Science and Technology of Yunnan Province
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Previous studies have indicated that genetic variations in the factors of insulin/insulin-like growth factor 1 (IGF-1) signaling pathway could influence human life-span by affecting IGF-1 levels. The promoter region of the IGF-1 gene is an obvious candidate and has not been studied clearly. To explore the potential role of the promoter region variation of IGF-1 gene in longevity, we investigated 485 longevity subjects and 392 younger individuals from Dujiangyan, China. By sequencing about 2.5 kb (kilo base pairs) upstream the transcription start site of exon 1 of the IGF-1 gene in 30 individuals from both groups respectively, we acquired three previously described SNPs (-439T/A (rs2288377), -541T/C (rs5742612) and -1246C/T (rs35767)). We examined the association between these three SNPs and longevity by comparing the distribution of genotypes, alleles, and haplotypes in both the longevity and control groups. None of these variants were found to be associated with longevity. Our results suggest that there is no association between SNPs in the promoter region of IGF-1 gene and longevity in the Han Chinese population. (C) 2008 Elsevier Inc. All rights reserved.
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