論文標題:Honey bee Royalactin unlocks conserved pluripotency pathway in mammals
期刊:Nature Communications
作者:Derrick C. Wan, Stefanie L. Morgan, Andrew L. Spencley, Natasha Mariano, Erin Y. Chang, Gautam Shankar, Yunhai Luo, Ted H. Li, Dana Huh, Star K. Huynh, Jasmine M. Garcia, Cole M. Dovey, Jennifer Lumb, Ling Liu, Katharine V. Brown, Abel Bermudez, Richard Luong, Hong Zeng, Victoria L. Mascetti, Sharon J. Pitteri, Jordon Wang, Hua Tu, Marco Quarta, Vittorio Sebastiano, Roel Nusse, Thomas A. Rando, Jan E. Carette, J. Fernando Bazan, Kevin C. Wang
發表時間:2018/11/04
數字識別碼: 10.1038/s41467-018-06256-4
原文連結:http://t.cn/Ey0d4Kj
微信連結:https://mp.weixin.qq.com/s/X2fKMxI6BIBc-sPOUhkh7Q
《自然-通訊》發表的一項研究Honey bee Royalactin unlocks conserved pluripotency pathway in mammals指出,蜂王漿的蛋白組分Royalactin能夠維持小鼠胚胎幹細胞的多能性。這項研究還在哺乳動物體內發現了其結構類似物Regina。Regina對幹細胞多能性具有類似的促進作用,揭示了幹細胞自我更新的內在機制。
圖1:Royalactin能夠維持小鼠胚胎幹細胞的多能性。圖源:Wan等
蜂王漿是蜜蜂(Apis mellifera)的「蜂后製造者」,已知能影響哺乳動物的壽命、生育能力和再生能力。研究人員發現蜂王漿主蛋白1(MRJP1,亦稱Royalactin)是蜂王漿的功能成分,對其它物種具有調節作用,或能激活保守通路。不過,這些保守的細胞信號通路尚未被弄清。
圖2:Royalactin在小鼠胚胎幹細胞中驅動基態狀多能性狀態。圖源:Wan等
美國史丹福大學醫學院的Kevin Wang和同事發現,Royalactin能在其它胚胎幹細胞維持因子不存在的情況下,激活體外培養的小鼠胚胎幹細胞的多能性基因網絡,並維持這些細胞。加入Royalactin培養的細胞被注射入小鼠囊胚後,胚胎仍能產生可活的小鼠,這些細胞也可以融入小鼠的生殖細胞。作者還在哺乳動物體內發現了Royalactin的結構類似物,他們稱為Regina。作者發現,Regina在體外維持小鼠胚胎幹細胞特性方面具有類似的功能能力。這表明蜜蜂到哺乳動物都存在一條演化保守通路,這一通路或許能調控每個物種體內的不同過程。進一步研究將有助於闡明Regina在哺乳動物細胞中的可能作用。
摘要:Royal jelly is the queen-maker for the honey bee Apis mellifera, and has cross-species effects on longevity, fertility, and regeneration in mammals. Despite this knowledge, how royal jelly or its components exert their myriad effects has remained poorly understood. Using mouse embryonic stem cells as a platform, here we report that through its major protein component Royalactin, royal jelly can maintain pluripotency by activating a ground-state pluripotency-like gene network. We further identify Regina, a mammalian structural analog of Royalactin that also induces a naive-like state in mouse embryonic stem cells. This reveals an important innate program for stem cell self-renewal with broad implications in understanding the molecular regulation of stem cell fate across species.
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(來源:科學網)
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