Cited by 77Skin and Cellular Biology ResearchMicrotubule and mitosis dynamicsCellular Mechanics and Interactions

Noncentrosomal microtubules and type II myosins potentiate epidermal cell adhesion and barrier formation

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Sumigray, Kaelyn D., Foote, Henry P., Lechler, Terry·2012·Journal of Cell Biology

Abstract

During differentiation, many cells reorganize their microtubule cytoskeleton into noncentrosomal arrays. Although these microtubules are likely organized to meet the physiological roles of their tissues, their functions in most cell types remain unexplored. In the epidermis, differentiation induces the reorganization of microtubules to cell–cell junctions in a desmosome-dependent manner. Here, we recapitulate the reorganization of microtubules in cultured epidermal cells. Using this reorganization assay, we show that cortical microtubules recruit myosin II to the cell cortex in order to engage adherens junctions, resulting in an increase in mechanical integrity of the cell sheets. Cortical microtubules and engaged adherens junctions, in turn, increase tight junction function. In vivo, disruption of microtubules or loss of myosin IIA and B resulted in loss of tight junction–mediated barrier activity. We propose that noncentrosomal microtubules act through myosin II recruitment to potentiate cell adhesion in the differentiating epidermis, thus forming a robust mechanical and chemical barrier against the external environment.

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  • Myosin-II-mediated junctional tension in the epidermis is required for TJ barrier function.

    “The observation that myosin-II-mediated junctional tension in the epidermis was shown to be required for TJ barrier function44”

    From E-cadherin integrates mechanotransduction and EGFR signaling to control junctional tissue polarization and tight junction positioning (2017) · cites this paper as [44]

    The Results section, “Loss of myosin IIA/B in the epidermis leads to tight junction defects” (page unavailable), reports a profound tight-junction functional defect in myosin IIA/B–null epidermis. The Discussion links myosin-dependent junctional strengthening to barrier function, but says the data *suggest* that adherens-junction tension controls tight-junction activity; it does not establish that junctional tension itself is required. (LLM, conf=0.82)

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Authors
Sumigray, K. D., Foote, H. P., & Lechler, T.
Affiliations
Duke Medical Center (US)
Corresponding author
Lechler, Terry
Venue
Journal of Cell Biology
Published
2012-10-22
Volume
199
Issue
3
Pages
513-525
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2121533701
Cited by
77
References
39
Citations by year
2026: 3 · 2025: 7 · 2024: 8 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 6 · 2019: 5 · 2018: 4 · 2017: 9 · 2016: 7 · 2015: 8 · 2014: 8 · 2013: 8 · 2012: 1
FWCI
3.79
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • March of Dimes Foundation
  • Whitehead Foundation
  • National Institutes of Health
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR055926)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
myosin II, myosin IIA, myosin IIB, epidermal differentiation, cell adhesion, skin barrier, adherens junctions, tight junctions, desmosomes, cortical microtubules, epidermal keratinocytes
MeSH terms
Epidermal Cells, Animals, Cell Adhesion, Cell Differentiation, Cells, Cultured, Desmosomes, Epidermis, Fluorescent Antibody Technique, Microtubules, Blotting, Western, Keratinocytes, Tight Junctions, Adherens Junctions, Myosin Type II, Immunoprecipitation, Mice

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