Aging kidneys show impaired autophagy activation—a cellular cleanup mechanism—making them vulnerable to sepsis-induced acute kidney injury. Restoring autophagy through TFEB activation or pharmacological intervention partially reverses this age-related deficit and protects against septic injury in aged tissues.
Key Points
- TFEB downregulation reduces autophagy capacity in aging kidney cells
- TAT-Beclin-1 peptide mitigates LPS-induced apoptosis in senescent cells
- TFEB activator C1 enhances autophagic function in aged kidneys in vivo
Longevity Analysis
Autophagy dysfunction emerges as a specific mechanism linking aging to acute injury susceptibility, revealing that age-related disease severity is not inevitable but addressable through targeted intervention. The kidney's reduced ability to clear damaged cellular material and regulate inflammatory responses during systemic infection represents a tractable target: restoring this fundamental cleanup process through TFEB activation demonstrates that functional capacity can be partially recovered even in advanced age. This shifts focus from accepting age-related vulnerability to identifying and correcting the specific regulatory failures that drive it.
Original published by Wiley Aging Cell, by Yu Xiang, Ying Fu, Zhiwen Liu, Yu Han, Wenwen Wu, Juan Cai, Dongshan Zhang, Zheng Dong .