Calorie restriction in humans inhibits the PI3K/AKT pathway and induces a younger transcription profile. Issue 4 (5th June 2013)

• Record Type: Journal Article
• Authors: Mercken, Evi M.; Crosby, Seth D.; Lamming, Dudley W.; JeBailey, Lellean; Krzysik‐Walker, Susan; Villareal, Dennis T.; Capri, Miriam; Franceschi, Claudio; Zhang, Yongqing; Becker, Kevin; Sabatini, David M.; de Cabo, Rafael; Fontana, Luigi
• Is Part Of: Aging cell. Volume 12:Issue 4(2013:Aug.)
• Page Start: 645
• Page End: 651
• Publication Date: 2013-06-05
• Subjects: caloric restriction -- human -- insulin/IGF‐1 signaling -- skeletal muscle; Cells -- Aging -- Periodicals; 571.8783605
• DOI: 10.1111/acel.12088
• Languages: English
• ISSNs: 1474-9718

Abstract

Summary: Caloric restriction (CR) and down‐regulation of the insulin/IGF pathway are the most robust interventions known to increase longevity in lower organisms. However, little is known about the molecular adaptations induced by CR in humans. Here, we report that long‐term CR in humans inhibits the IGF‐1/insulin pathway in skeletal muscle, a key metabolic tissue. We also demonstrate that CR induces dramatic changes of the skeletal muscle transcriptional profile that resemble those of younger individuals. Finally, in both rats and humans, CR evoked similar responses in the transcriptional profiles of skeletal muscle. This common signature consisted of three key pathways typically associated with longevity: IGF‐1/insulin signaling, mitochondrial biogenesis, and inflammation. Furthermore, our data identify promising pathways for therapeutic targets to combat age‐related diseases and promote health in humans.