Cited by 669Microtubule and mitosis dynamicsProtein Kinase Regulation and GTPase SignalingCellular Mechanics and Interactions

Nucleotide exchange factor GEF-H1 mediates cross-talk between microtubules and the actin cytoskeleton

Krendel, Mira, Zenke, Frank T., Bokoch, Gary M.·2002·Nature Cell Biology

Abstract

Regulation of the actin cytoskeleton by microtubules is mediated by the Rho family GTPases. However, the molecular mechanisms that link microtubule dynamics to Rho GTPases have not, as yet, been identified. Here we show that the Rho guanine nucleotide exchange factor (GEF)-H1 is regulated by an interaction with microtubules. GEF-H1 mutants that are deficient in microtubule binding have higher activity levels than microtubule-bound forms. These mutants also induce Rho-dependent changes in cell morphology and actin organization. Furthermore, drug-induced microtubule depolymerization induces changes in cell morphology and gene expression that are similar to the changes induced by the expression of active forms of GEF-H1. Furthermore, these effects are inhibited by dominant-negative versions of GEF-H1. Thus, GEF-H1 links changes in microtubule integrity to Rho-dependent regulation of the actin cytoskeleton.

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Crossref · 10.1038/ncb773

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Authors
Krendel, M., Zenke, F. T., & Bokoch, G. M.
Affiliations
Scripps Research Institute (US)
Corresponding author
Bokoch, Gary M.
Venue
Nature Cell Biology
Published
2002-03-25
Volume
4
Issue
4
Pages
294-301
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2055236272
Cited by
669
References
32
Citations by year
2026: 21 · 2025: 29 · 2024: 32 · 2023: 32 · 2022: 22 · 2021: 31 · 2020: 28 · 2019: 36 · 2018: 20 · 2017: 39 · 2016: 29 · 2015: 21 · 2014: 25 · 2013: 37 · 2012: 34
FWCI
11.40
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Cancer Research Institute
  • Arthritis Foundation
  • Thailand Science Research and Innovation
  • U.S. Army
  • U.S. Public Health Service
  • National Institute of General Medical Sciences (GM34934)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
GEF-H1, RhoGEF, microtubules, actin cytoskeleton, Rho GTPases, microtubule binding, microtubule depolymerization, cell morphology, actin organization
MeSH terms
Actins, Animals, Dose-Response Relationship, Drug, Gene Expression Regulation, Guanine Nucleotides, HeLa Cells, Humans, Microscopy, Fluorescence, Microtubule-Associated Proteins, Microtubules, Models, Genetic, Plasmids, Precipitin Tests, Time Factors, Transfection, Protein Structure, Tertiary, Genes, Reporter, DNA, Complementary, COS Cells, Guanine Nucleotide Exchange Factors, ras Guanine Nucleotide Exchange Factors, ras GTPase-Activating Proteins, rhoA GTP-Binding Protein, cdc42 GTP-Binding Protein, rac1 GTP-Binding Protein, Rho Guanine Nucleotide Exchange Factors

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