Feedback Regulation Between Plasma Membrane Tension and Membrane-bending Proteins Organizes Cell Polarity During Leading Edge Formation
Overview
Affiliations
Tension applied to the plasma membrane (PM) is a global mechanical parameter involved in cell migration. However, how membrane tension regulates actin assembly is unknown. Here, we demonstrate that FBP17, a membrane-bending protein and an activator of WASP/N-WASP-dependent actin nucleation, is a PM tension sensor involved in leading edge formation. In migrating cells, FBP17 localizes to short membrane invaginations at the leading edge, while diminishing from the cell rear in response to PM tension increase. Conversely, following reduced PM tension, FBP17 dots randomly distribute throughout the cell, correlating with loss of polarized actin assembly on PM tension reduction. Actin protrusive force is required for the polarized accumulation, indicating a role for FBP17-mediated activation of WASP/N-WASP in PM tension generation. In vitro experiments show that FBP17 membrane-bending activity depends on liposomal membrane tension. Thus, FBP17 is the local activator of actin polymerization that is inhibited by PM tension in the feedback loop that regulates cell migration.
Mechanical signaling through membrane tension induces somal translocation during neuronal migration.
Minegishi T, Hasebe H, Aoyama T, Naruse K, Takahashi Y, Inagaki N EMBO J. 2024; 44(3):767-780.
PMID: 39707024 PMC: 11790904. DOI: 10.1038/s44318-024-00326-8.
Zhou L, Cao H, Huang L, Jing Y, Wang M, Lin D Nanophotonics. 2024; 12(9):1777-1785.
PMID: 39634114 PMC: 11501639. DOI: 10.1515/nanoph-2023-0033.
Liang X, Zhao Y, Yan J, Zhang Q, James T, Lin W Proc Natl Acad Sci U S A. 2024; 121(41):e2316450121.
PMID: 39356672 PMC: 11474025. DOI: 10.1073/pnas.2316450121.
The host GTPase Dynamin 2 modulates apical junction structure to control cell-to-cell spread of .
Tijoriwalla S, Liyanage T, Herath T, Lee N, Rehman A, Gianfelice A Infect Immun. 2024; 92(10):e0013624.
PMID: 39133017 PMC: 11475654. DOI: 10.1128/iai.00136-24.
Vesicle fusion and release in neurons under dynamic mechanical equilibrium.
Liu W, Gao T, Li N, Shao S, Liu B iScience. 2024; 27(5):109793.
PMID: 38736547 PMC: 11088343. DOI: 10.1016/j.isci.2024.109793.