Cited by 449Protein Kinase Regulation and GTPase SignalingChemokine receptors and signalingCell Adhesion Molecules Research

Haematopoietic cell-specific CDM family protein DOCK2 is essential for lymphocyte migration

Fukui, Yoshinori, Hashimoto, Osamu, Sanui, Terukazu, Oono, Takamasa, Koga, Hironori, Abe, Masaaki, Inayoshi, Ayumi, Noda, Mayuko +3 more·2001·Nature

Abstract

Cell migration is a fundamental biological process involving membrane polarization and cytoskeletal dynamics, both of which are regulated by Rho family GTPases. Among these molecules, Rac is crucial for generating the actin-rich lamellipodial protrusion, a principal part of the driving force for movement. The CDM family proteins, Caenorhabditis elegans CED-5, human DOCK180 and Drosophila melanogaster Myoblast City (MBC), are implicated to mediate membrane extension by functioning upstream of Rac. Although genetic analysis has shown that CED-5 and Myoblast City are crucial for migration of particular types of cells, physiological relevance of the CDM family proteins in mammals remains unknown. Here we show that DOCK2, a haematopoietic cell-specific CDM family protein, is indispensable for lymphocyte chemotaxis. DOCK2-deficient mice (DOCK2-/-) exhibited migration defects of T and B lymphocytes, but not of monocytes, in response to chemokines, resulting in several abnormalities including T lymphocytopenia, atrophy of lymphoid follicles and loss of marginal-zone B cells. In DOCK2-/- lymphocytes, chemokine-induced Rac activation and actin polymerization were almost totally abolished. Thus, in lymphocyte migration DOCK2 functions as a central regulator that mediates cytoskeletal reorganization through Rac activation.

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Crossref · 10.1038/35090591

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Authors
Fukui, Y., Hashimoto, O., Sanui, T., Oono, T., Koga, H., Abe, M., Inayoshi, A., Noda, M., Oike, M., Shirai, T., & Sasazuki, T.
Affiliations
  • Kyushu University (JP)
  • Kurume University (JP)
  • Juntendo University (JP)
Corresponding author
Shirai, Toshikazu
Venue
Nature
Published
2001-08
Volume
412
Issue
6849
Pages
826-831
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2022157262
Cited by
449
References
30
Citations by year
2026: 6 · 2025: 11 · 2024: 8 · 2023: 14 · 2022: 12 · 2021: 10 · 2020: 9 · 2019: 14 · 2018: 15 · 2017: 18 · 2016: 10 · 2015: 12 · 2014: 23 · 2013: 21 · 2012: 22
FWCI
8.26
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
University of Michigan
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Health Sciences › Medicine › Oncology › Chemokine receptors and signaling
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
Keywords
DOCK2, lymphocyte chemotaxis, lymphocyte migration, Rac activation, Rho GTPases, actin polymerization, cytoskeletal remodeling, T cells, B cells, marginal zone B cells, lymphopenia, chemokines
MeSH terms
Animals, B-Lymphocytes, Carrier Proteins, Cell Line, Chemotaxis, Leukocyte, Cytoskeleton, Female, Hematopoietic Stem Cells, Immunologic Memory, Male, Mice, Inbred C57BL, Spleen, Stem Cells, T-Lymphocytes, Cytokines, Chemokines, CXC, Guanine Nucleotide Exchange Factors, GTPase-Activating Proteins, rac GTP-Binding Proteins, rac1 GTP-Binding Protein, Mice, Chemokine CXCL12

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