Karpac Jason, Jasper Heinrich
Department of Biology, University of Rochester, River Campus Box 270211, Rochester, NY 14627, USA.
Trends Endocrinol Metab. 2009 Apr;20(3):100-6. doi: 10.1016/j.tem.2008.11.004. Epub 2009 Feb 27.
Metabolic adaptation to environmental changes is crucial for the long-term survival of an organism. Signaling mechanisms that govern this adaptation thus influence lifespan. One such mechanism is the insulin/insulin-like growth factor signaling (IIS) pathway, a central regulator of metabolism in metazoans. Recent studies have identified the stress-responsive Jun-N-terminal kinase (JNK) pathway as a regulator of IIS signaling, providing a link between environmental challenges and metabolic regulation. JNK inhibits IIS activity and, thus, promotes lifespan extension and stress tolerance. Interestingly, this interaction is also at the center of age-related metabolic diseases. Here, we review recent advances illuminating the mechanisms of the JNK-IIS interaction and its implications for metabolic diseases and lifespan in metazoans.
代谢对环境变化的适应对于生物体的长期生存至关重要。调控这种适应的信号机制因此会影响寿命。胰岛素/胰岛素样生长因子信号传导(IIS)途径就是这样一种机制,它是后生动物新陈代谢的核心调节因子。最近的研究已确定应激反应性Jun氨基末端激酶(JNK)途径是IIS信号传导的调节因子,为环境挑战与代谢调节之间提供了联系。JNK抑制IIS活性,从而促进寿命延长和应激耐受性。有趣的是,这种相互作用也是与年龄相关的代谢疾病的核心。在这里,我们综述了阐明JNK-IIS相互作用机制及其对后生动物代谢疾病和寿命影响的最新进展。