[PDF][PDF] iPSCs from a hibernator provide a platform for studying cold adaptation and its potential medical applications

J Ou, JM Ball, Y Luan, T Zhao, KJ Miyagishima, Y Xu… - Cell, 2018 - cell.com
J Ou, JM Ball, Y Luan, T Zhao, KJ Miyagishima, Y Xu, H Zhou, J Chen, DK Merriman, Z Xie
Cell, 2018cell.com
Hibernating mammals survive hypothermia (< 10° C) without injury, a remarkable feat of
cellular preservation that bears significance for potential medical applications. However,
mechanisms imparting cold resistance, such as cytoskeleton stability, remain elusive. Using
the first iPSC line from a hibernating mammal (13-lined ground squirrel), we uncovered
cellular pathways critical for cold tolerance. Comparison between human and ground
squirrel iPSC-derived neurons revealed differential mitochondrial and protein quality control …
Summary
Hibernating mammals survive hypothermia (<10°C) without injury, a remarkable feat of cellular preservation that bears significance for potential medical applications. However, mechanisms imparting cold resistance, such as cytoskeleton stability, remain elusive. Using the first iPSC line from a hibernating mammal (13-lined ground squirrel), we uncovered cellular pathways critical for cold tolerance. Comparison between human and ground squirrel iPSC-derived neurons revealed differential mitochondrial and protein quality control responses to cold. In human iPSC-neurons, cold triggered mitochondrial stress, resulting in reactive oxygen species overproduction and lysosomal membrane permeabilization, contributing to microtubule destruction. Manipulations of these pathways endowed microtubule cold stability upon human iPSC-neurons and rat (a non-hibernator) retina, preserving its light responsiveness after prolonged cold exposure. Furthermore, these treatments significantly improved microtubule integrity in cold-stored kidneys, demonstrating the potential for prolonging shelf-life of organ transplants. Thus, ground squirrel iPSCs offer a unique platform for bringing cold-adaptive strategies from hibernators to humans in clinical applications.
Video Abstract
cell.com