Ok Hee Jeon

1 Introduction Sarcopenia, which affects up to 50% of adults over 80 years of age, is characterized by an age-related decline in muscle mass, strength and physical performance [1].

Abstact Ageing is the largest risk factor for many chronic diseases. Studies of heterochronic parabiosis, substantiated by blood exchange and old plasma dilution, show that old-age-related factors are systemically propagated and have pro-geronic effects in young mice. However, the underlying mechanisms how bloodborne factors promote ageing remain largely unknown.

Abstract Senescent cells (SnCs) accumulate in many vertebrate tissues with age and contribute to age-related pathologies1,2,3, presumably through their secretion of factors contributing to the senescence-associated secretory phenotype (SASP)4,5,6. Removal of SnCs delays several pathologies7,8,9 and increases healthy lifespan8.