Locatelli 2020 FASEB J

From Bioblast
Jump to: navigation, search
Publications in the MiPMap
Locatelli L, Cazzaniga A, De Palma C, Castiglioni S, Maier JAM (2020) Mitophagy contributes to endothelial adaptation to simulated microgravity. FASEB J 34:1833-45.

» PMID: 31914607 Open Access

Locatelli L, Cazzaniga A, De Palma C, Castiglioni S, Maier JAM (2020) FASEB J

Abstract: Exposure to real or simulated microgravity is sensed as a stress by mammalian cells, which activate a complex adaptive response. In human primary endothelial cells, we have recently shown the sequential intervention of various stress proteins which are crucial to prevent apoptosis and maintain cell function. We here demonstrate that mitophagy contributes to endothelial adaptation to gravitational unloading. After 4 and 10 d of exposure to simulated microgravity in the rotating wall vessel, the amount of BCL2 interacting protein 3, a marker of mitophagy, is increased and, in parallel, mitochondrial content, oxygen consumption, and maximal respiratory capacity are reduced, suggesting the acquisition of a thrifty phenotype to meet the novel metabolic challenges generated by gravitational unloading. Moreover, we suggest that microgravity induced-disorganization of the actin cytoskeleton triggers mitophagy, thus creating a connection between cytoskeletal dynamics and mitochondrial content upon gravitational unloading.

© 2019 Federation of American Societies for Experimental Biology.

Keywords: HUVEC, RWV, Cytoskeleton, Mitochondria Bioblast editor: Plangger M O2k-Network Lab: IT Milan Clementi E


Labels: MiParea: Respiration, Comparative MiP;environmental MiP 


Organism: Human  Tissue;cell: Endothelial;epithelial;mesothelial cell  Preparation: Isolated mitochondria, Intact cells 


Coupling state: LEAK, OXPHOS, ET  Pathway: N, S, NS, ROX  HRR: Oxygraph-2k 

Labels, 2020-01