中科院昆明动物所找到长寿相关差异表达基因
中国科学报 · 2016/03/28
中国科学院昆明动物研究所孔庆鹏课题组和海南医学院合作,系统研究了与健康长寿相关的遗传保护因子,鉴定到与长寿相关的差异表达基因。相关成果日前发表于《科学报告》。


中国科学院昆明动物研究所孔庆鹏课题组和海南医学院合作,系统研究了与健康长寿相关的遗传保护因子,鉴定到与长寿相关的差异表达基因。相关成果日前发表于《科学报告》。

研究和挖掘长寿及长寿家系的健康保护因子,对衰老相关疾病的防治和健康政策的制定具有重要意义。

孔庆鹏合作团队以海南健康长寿人群为研究对象,通过对100余个长寿家系样本的健康状况、血液生化指标检查发现:在衰老过程中,甘油三酯(TG)和总胆固醇(TC)水平逐渐升高,但在长寿老人中却呈下降趋势。同样,虽然肾脏功能伴随衰老进程不断衰退,但相关指标(血尿素氮、肌酐等)在长寿老人中却得到很好的维持。

心血管疾病是我国成人死亡的首要原因,而血脂、肾脏功能的恶化是成人心血管疾病的高危因素,这些指标在长寿人群中得以改善和维持,很可能是长寿老人较少罹患心血管疾病的重要原因。为进一步明确这些指标改善的原因,课题组对长寿家系成员的外周血进行了转录组测定,结果成功鉴定到与这些指标显著相关的差异表达基因,提示该性状确实存在遗传调控基础。

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  • Improved lipids, diastolic pressure and kidney function are potential contributors to familial longevity: a study on 60 Chinese centenarian families

    Centenarians are a good healthy aging model. Interestingly, centenarians’ offspring are prone to achieve longevity. Here we recruited 60 longevity families and investigated the blood biochemical indexes of family members to seek candidate factors associated with familial longevity. First, associations of blood indexes with age were tested. Second, associations of blood parameters in centenarians (CEN) with their first generation of offspring (F1) and F1 spouses (F1SP) were analyzed. Third, genes involved in regulating target factors were investigated. We found that total cholesterol (TC) and triglyceride (TG) increased with age (20–80 years), but decreased in CEN. Similarly, blood urea nitrogen (BUN) and blood creatinine (BCr) increased with age (20–80 years), but were maintained on a plateau in CEN. Importantly, we first revealed dual changes in blood pressure, i.e., decreased diastolic blood pressure but increased systolic blood pressure in CEN, which associated with altered CST3 expression. Genetic analysis revealed a significant association of blood uric acid (BUA) and BCr in CEN with F1 but not with F1SP, suggesting they may be heritable traits. Taken together, our results suggest serum lipids, kidney function and especially diastolic pressure rather than systolic pressure were improved in CEN or their offspring, suggesting these factors may play an important role in familial longevity.

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