Intrinsically aggregation-prone proteins form amyloid-like aggregates and contribute to tissue aging in Caenorhabditis elegans

eLife

Nicole Schlörit¹  Romain F Laine¹  Clemens F Kaminski²  Della C David²  Sara Wagner-Valladolid²  Claire H Michel²  Chetan Poudel²  Amberley D Stephens²  Michele Vendruscolo²  Gabriele S Kaminski Schierle³  Tessa Sinnige³  Meng Lu⁴  Chaolie Huang⁴  Raimund Jung⁴  Marie C Lechler⁴ 

[1] Graduate Training Centre of Neuroscience, University of Tübingen, Tübingen, Germany;Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, United Kingdom;Department of Chemistry, University of Cambridge, Cambridge, United Kingdom;German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany;

关键词: protein aggregation;    aging;    amyloid;   

DOI  :  10.7554/eLife.43059

来源: DOAJ

【 摘 要 】

Reduced protein homeostasis leading to increased protein instability is a common molecular feature of aging, but it remains unclear whether this is a cause or consequence of the aging process. In neurodegenerative diseases and other amyloidoses, specific proteins self-assemble into amyloid fibrils and accumulate as pathological aggregates in different tissues. More recently, widespread protein aggregation has been described during normal aging. Until now, an extensive characterization of the nature of age-dependent protein aggregation has been lacking. Here, we show that age-dependent aggregates are rapidly formed by newly synthesized proteins and have an amyloid-like structure resembling that of protein aggregates observed in disease. We then demonstrate that age-dependent protein aggregation accelerates the functional decline of different tissues in C. elegans. Together, these findings imply that amyloid-like aggregates contribute to the aging process and therefore could be important targets for strategies designed to maintain physiological functions in the late stages of life.

【 授权许可】

Unknown