Center for Integrative Biology and Biotherapeutics, Pfizer, Pearl River, NY, USA.
Autophagy. 2010 Oct;6(7):968-70. doi: 10.4161/auto.6.7.13082. Epub 2010 Oct 20.
Autophagy is an intracellular degradative pathway that plays key roles in the homeostatic turnover of long-lived or damaged proteins and organelles, and in the survival of cells during starvation or other stressful conditions. We have uncovered an unexpected link between glutamine (Gln) metabolism and the regulation of autophagy. Our findings indicate that ammonia, generated from Gln deamination in mitochondria, functions as an autocrine- and/or paracrine-acting stimulator of autophagic flux.
自噬是一种细胞内降解途径,在长寿命或受损蛋白质和细胞器的稳态周转以及细胞在饥饿或其他应激条件下的存活中发挥关键作用。我们发现了谷氨酰胺(Gln)代谢与自噬调节之间的意外联系。我们的研究结果表明,来自线粒体 Gln 脱氨的氨作为自噬流的自分泌和/或旁分泌作用的刺激物发挥作用。