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Periodic propagating waves coordinate RhoGTPase network dynamics at the leading and trailing edges during cell migration.

ABSTRACT: Migrating cells need to coordinate distinct leading and trailing edge dynamics but the underlying mechanisms are unclear. Here, we combine experiments and mathematical modeling to elaborate the minimal autonomous biochemical machinery necessary and sufficient for this dynamic coordination and cell movement. RhoA activates Rac1 via DIA and inhibits Rac1 via ROCK, while Rac1 inhibits RhoA through PAK. Our data suggest that in motile, polarized cells, RhoA-ROCK interactions prevail at the rear, whereas RhoA-DIA interactions dominate at the front where Rac1/Rho oscillations drive protrusions and retractions. At the rear, high RhoA and low Rac1 activities are maintained until a wave of oscillatory GTPase activities from the cell front reaches the rear, inducing transient GTPase oscillations and RhoA activity spikes. After the rear retracts, the initial GTPase pattern resumes. Our findings show how periodic, propagating GTPase waves coordinate distinct GTPase patterns at the leading and trailing edge dynamics in moving cells.

SUBMITTER: Bolado-Carrancio A

PROVIDER: S-EPMC7380942 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature

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Periodic propagating waves coordinate RhoGTPase network dynamics at the leading and trailing edges during cell migration.

Bolado-Carrancio Alfonso A Rukhlenko Oleksii S OS Nikonova Elena E Tsyganov Mikhail A MA Wheeler Anne A Garcia-Munoz Amaya A Kolch Walter W von Kriegsheim Alex A Kholodenko Boris N BN

eLife 20200724

Migrating cells need to coordinate distinct leading and trailing edge dynamics but the underlying mechanisms are unclear. Here, we combine experiments and mathematical modeling to elaborate the minimal autonomous biochemical machinery necessary and sufficient for this dynamic coordination and cell movement. RhoA activates Rac1 via DIA and inhibits Rac1 via ROCK, while Rac1 inhibits RhoA through PAK. Our data suggest that in motile, polarized cells, RhoA-ROCK interactions prevail at the rear, whe ...[more]

PMID: 32705984

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Dataset Information

Periodic propagating waves coordinate RhoGTPase network dynamics at the leading and trailing edges during cell migration.

Publications

Periodic propagating waves coordinate RhoGTPase network dynamics at the leading and trailing edges during cell migration.

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