An RGS-containing sorting nexin controls Drosophila lifespan.

An RGS-containing sorting nexin controls Drosophila lifespan.
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DOI:
10.1371/journal.pone.0002152
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发表时间:
2008-05-14
期刊:
影响因子:
3.7
通讯作者:
Graff JM
Graff JM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Suh JM;Stenesen D;Peters JM;Inoue A;Cade A;Graff JM

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对青春永驻的追求已经存在了几个世纪,最近的数据表明,储存脂肪的组织控制着寿命。在D中。为了分离控制寿命的基因,我们鉴定了一种G蛋白信号传导(RGS)结构域的调节剂,该结构域含有分选连接蛋白,称为snazarus(sorting nexinl azarus,snz)。插入snz 5′ UTR的果蝇寿命是对照的两倍。来自snz Gal 4增强子陷阱插入的UAS-Snz的转基因表达,在脂肪代谢组织中有活性,挽救了寿命延长。此外,snz突变体的寿命延长不依赖于内共生体,例如,沃尔巴克氏体效应值得注意的是,年老的snz突变果蝇仍然活跃和有生育能力,这表明snz突变果蝇延长了青春期,这是衰老研究的一个目标。由于哺乳动物有snz相关基因,snz家族的功能可能对人类是保守的。
The pursuit of eternal youth has existed for centuries and recent data indicate that fat-storing tissues control lifespan. In a D. melanogaster fat body insertional mutagenic enhancer trap screen designed to isolate genes that control longevity, we identified a regulator of G protein signaling (RGS) domain containing sorting nexin, termed snazarus (s orting n exin l azarus, snz). Flies with insertions into the 5′ UTR of snz live up to twice as long as controls. Transgenic expression of UAS-Snz from the snz Gal4 enhancer trap insertion, active in fat metabolic tissues, rescued lifespan extension. Further, the lifespan extension of snz mutants was independent of endosymbiont, e.g., Wolbachia, effects. Notably, old snz mutant flies remain active and fertile indicating that snz mutants have prolonged youthfulness, a goal of aging research. Since mammals have snz-related genes, it is possible that the functions of the snz family may be conserved to humans.
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