Novel compounds are described which decrease the intracellular levels of leucine and methionine. Treatment with these amino acid depletion agents affects many metabolic and life processes which rely upon methionine, leucine and their derivatives. Methionine depletion not only inhibits protein synthesis, but also polyamine biosynthesis and significantly reduces intracellular pools of the native polyamines, spermidine and spermine. Since methionine restriction has been shown to mimic caloric restriction in life extension studies across multiple species, these compounds are also expected to extend lifespan by limiting methionine supply.
描述了几种新的化合物,这些化合物能够降低细胞内亮
氨酸和蛋
氨酸的
水平。使用这些
氨基酸剥夺剂影响许多依赖蛋
氨酸、亮
氨酸及其衍
生物的代谢和生命过程。蛋
氨酸剥夺不仅抑制蛋白质合成,还抑制聚胺
生物合成,并显著减少细胞内天然聚胺,即
亚精胺和
精胺的池。由于蛋
氨酸限制在多个物种的生命延长研究中已被证明可以模仿卡路里限制,因此预计这些化合物通过限制蛋
氨酸供应也能延长寿命。