Focal adhesions are controlled by microtubules through local contractility regulation
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Abstract
Microtubules regulate cell polarity and migration via local activation of focal adhesion turnover, but the mechanism of this process is insufficiently understood. Molecular complexes containing KANK family proteins connect microtubules with talin, the major component of focal adhesions. Here, local optogenetic activation of KANK1-mediated microtubule/talin linkage promoted microtubule targeting to an individual focal adhesion and subsequent withdrawal, resulting in focal adhesion centripetal sliding and rapid disassembly. This sliding is preceded by a local increase of traction force due to accumulation of myosin-II and actin in the proximity of the focal adhesion. Knockdown of the Rho activator GEF-H1 prevented development of traction force and abolished sliding and disassembly of focal adhesions upon KANK1 activation. Other players participating in microtubule-driven, KANK-dependent focal adhesion disassembly include kinases ROCK, PAK, and FAK, as well as microtubules/focal adhesion-associated proteins kinesin-1, APC, and αTAT. Based on these data, we develop a mathematical model for a microtubule-driven focal adhesion disruption involving local GEF-H1/RhoA/ROCK-dependent activation of contractility, which is consistent with experimental data.
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GEF‐H1 activates membrane‐bound RhoA, triggering downstream signals that elevate cellular contractility in an NM2‐dependent manner.
“GEF‐H1 then activates membrane‐bound RhoA [35], triggering downstream signals that elevate cellular contractility in an NM2‐dependent manner.”
From Paclitaxel induces <scp>NM2</scp> ‐dependent cellular contraction through <scp>GEF</scp> ‐ <scp>H1</scp> dissociation from microtubules and <scp>RhoA</scp> / <scp>ROCK</scp> activation in cancer cells (2026) · cites this paper as [35]
The Results section (‘Rho activation by GEF-H1 is required for focal adhesion disassembly upon microtubule targeting’; page unavailable) identifies GEF-H1’s function in this process as RhoA activation. The Discussion links that activation to a local actomyosin contractile network and traction forces. Our copy does not specify that the activated RhoA is membrane-bound, so that qualifier is unsupported. (LLM, conf=0.84)
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Structural basis of microtubule-mediated signal transduction
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- Authors
- Aureille, J., Prabhu, S. S., Barnett, S. F., Farrugia, A. J., Arnal, I., Lafanechère, L., Low, B. C., Kanchanawong, P., Mogilner, A., & Bershadsky, A. D.
- Affiliations
- National University of Singapore (SG)
- Inserm (FR)
- New York University (US)
- Corresponding author
- Aureille, Julien
- Bershadsky, Alexander D
- ORCID
- Venue
- The EMBO Journal
- Published
- 2024-05-20
- Volume
- 43
- Issue
- 13
- Pages
- 2715-2732
- ISSN
- 0261-4189 (ISSN-L)
- 1460-2075
- PMC
- PMC11217342
- OpenAlex
- W4398135220
- Cited by
- 32
- References
- 1
- Citations by year
- 2026: 18 · 2025: 11 · 2024: 3
- FWCI
- 6.77
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- The EMBO Journal (publishedVersion, cc-by)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- HAL (submittedVersion, cc-by)
- Funders
- Ministry of Education - Singapore (MOE2018-T2-2-138, MOE2019-T2-1-099, MOE2019-T2-02-014, MOE2016-T3-1-002, MOET32021-0003)
- Prime Minister‖s Office Singapore (R-714-006-006-271)
- Fondation Neurodis (R2311CC)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
- Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
- Keywords
- focal adhesions, microtubules, focal adhesion turnover, KANK1, talin, focal adhesion disassembly, traction force, myosin II, GEF-H1, RhoA, rocks, PAK, focal adhesion kinase, kinesin-1, APC, cell contractility, mathematical model, cell polarity, cell migration
- MeSH terms
- Animals, Cytoskeletal Proteins, Humans, Microtubules, Kinesins, Talin, Focal Adhesions, Myosin Type II, Adaptor Proteins, Signal Transducing, Rho Guanine Nucleotide Exchange Factors
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