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Quasi-programmed aging of budding yeast: a trade-off between programmed processes of cell proliferation differentiation stress response survival and death defines yeast lifespan

机译:拟芽酵母的拟编程老化:细胞增殖分化应激反应存活和死亡的编程过程之间的权衡决定了酵母的寿命

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摘要

Recent findings suggest that evolutionarily distant organisms share the key features of the aging process and exhibit similar mechanisms of its modulation by certain genetic, dietary and pharmacological interventions. The scope of this review is to analyze mechanisms that in the yeast Saccharomyces cerevisiae underlie: (1) the replicative and chronological modes of aging; (2) the convergence of these 2 modes of aging into a single aging process; (3) a programmed differentiation of aging cell communities in liquid media and on solid surfaces; and (4) longevity-defining responses of cells to some chemical compounds released to an ecosystem by other organisms populating it. Based on such analysis, we conclude that all these mechanisms are programs for upholding the long-term survival of the entire yeast population inhabiting an ecological niche; however, none of these mechanisms is a ʺprogram of agingʺ - i.e., a program for progressing through consecutive steps of the aging process.
机译:最近的发现表明,与进化距离遥远的生物体具有衰老过程的关键特征,并通过某些遗传,饮食和药理学干预表现出类似的调节机制。本综述的范围是分析啤酒酵母中的机理:(1)衰老的复制和时间顺序模式; (2)将这两种老化模式整合为一个老化过程; (3)在液体介质和固体表面上有计划地区分衰老的细胞群落; (4)定义细胞对某些居住在其上的其他生物释放给生态系统的化合物的寿命的反应。基于这样的分析,我们得出结论,所有这些机制都是维持整个生态位的整个酵母种群长期生存的程序。但是,这些机制都不是“老化程序”,即,用于逐步进行老化过程的程序。

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