RESUMO
Objective To analyze mRNA expression of silent information regulator 6 (SIRT6) gene in the blood of population with family history of longevity in Bama county of Guangxi and to explore its association with SIRT6 gene polymorphism and its protein Methods One hundred and thirty-seven people (aged 30 ~ 106, 70 males, 67 females, 6.57% Han nationality, 93.43% Zhuang and Yao nationalities) with family history of longevity (long-lived family history group), and 91 people (aged 22~89, 51 males, 40 females, all Zhuang and Yao nationalities) without family history of longevity were recruited in the study (non-long-lived family history group). Real-time fluorescence quantitative RT-PCR was used to detect mRNA expression of SIRT6 gene in two groups. Results SIRT6 mRNA expression of total and femals in long-lived family history group were higher than those in non-long-lived family history group (P0.05). Conclusion The expression of mRNA in SIRT6 gene may be associated with familial aggregation of longevity in Bama County of Guangxi and high expression of mRNA of SIRT6 in G allele carriers contributes to longevity.