Preprint
English

An evolutionary-conserved VPS34-PIKfyve-TRPML1-Myosin II axis regulates the speed of amoeboid cell migration

First online date2024-01-23
Abstract

Amoeboid cell migration is key to efficient T cell immunity. Spatial polarization of organelles within cells, including endo-lysosomes, is a prerequisite of migration. However, how ultrastructural polarization is linked to the signaling requirements governing T cell migration, remains unknown. Here we show that signaling molecules generated by endo-lysosome-localized kinases regulate velocity of amoeboid migration. Specifically, imaging of T cells identified accumulation of endo-lysosomes decorated with the lipid kinases VPS34–PIKfyve at the uropod of polarized cells. Activity of VPS34 and PIKfyve regulated speed, but not directedness, of migrating T cells. Mechanistically, PI(3,5)P 2 generated by the sequential action of VPS34 and PIKfyve mediated Ca 2+ efflux from lysosomes via the mucolipin TRP cation channel 1 (TRPML1), thus controlling activity of myosin IIA and hence the generation of propulsive force through retrograde actin flow. The VPS34–PIKfyve kinases also regulated velocity of myeloid cells, as well as of the amoeba Dictyostelium discoideum – establishing the axis as an evolutionary conserved speed control system of amoeboid cell migration.

Research groups
Citation (ISO format)
DEHIO, Philippe et al. An evolutionary-conserved VPS34-PIKfyve-TRPML1-Myosin II axis regulates the speed of amoeboid cell migration. 2024. doi: 10.1101/2024.01.22.575998
Main files (1)
Identifiers
115views
28downloads

Technical informations

Creation29/07/2024 08:39:21
First validation30/07/2024 12:29:15
Update30/07/2024 12:29:15
Status update30/07/2024 12:29:15
Last indexation01/11/2024 10:38:33
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack