Cited by 64Cell Adhesion Molecules ResearchCellular Mechanics and InteractionsDevelopmental Biology and Gene Regulation

Two Distinct Integrin-Mediated Mechanisms Contribute to Apical Lumen Formation in Epithelial Cells

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Myllymäki, Satu Marja, Teräväinen, Terhi Piritta, Manninen, Aki·2011·PLoS ONE

Abstract

BACKGROUND: Formation of apical compartments underlies the morphogenesis of most epithelial organs during development. The extracellular matrix (ECM), particularly the basement membrane (BM), plays an important role in orienting the apico-basal polarity and thereby the positioning of apical lumens. Integrins have been recognized as essential mediators of matrix-derived polarity signals. The importance of β1-integrins in epithelial polarization is well established but the significance of the accompanying α-subunits have not been analyzed in detail. PRINCIPAL FINDINGS: Here we demonstrate that two distinct integrin-dependent pathways regulate formation of apical lumens to ensure robust apical membrane biogenesis under different microenvironmental conditions; 1) α2β1- and α6β4-integrins were required to establish a basal cue that depends on Rac1-activity and guides apico-basal cell polarization. 2) α3β1-integrins were implicated in positioning of mitotic spindles in cysts, a process that is essential for Cdc42-driven epithelial hollowing. SIGNIFICANCE: Identification of the separate processes driven by particular integrin receptors clarifies the functional hierarchies between the different integrins co-expressed in epithelial cells and provides valuable insight into the complexity of cell-ECM interactions thereby guiding future studies addressing the molecular basis of epithelial morphogenesis during development and disease.

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Crossref · 10.1371/journal.pone.0019453

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  • β4 integrin expressed by intestinal organoids is distributed only at the basal surface, while β1 integrin is required for proper apical-basal polarization.

    “β4 integrin expressed by intestinal organoids is distributed only at the basal surface94, while β1 integrin is required for proper apical-basal polarization95–97.”

    From Towards organoid culture without Matrigel (2021) · cites this paper as [96]

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Authors
Myllymäki, S. M., Teräväinen, T. P., & Manninen, A.
Affiliations
University of Oulu (FI)
Corresponding author
Manninen, Aki
Venue
PLoS ONE
Published
2011-05-06
Volume
6
Issue
5
Pages
e19453
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2013419034
Cited by
64
References
53
Citations by year
2026: 2 · 2025: 2 · 2024: 4 · 2023: 2 · 2022: 8 · 2021: 1 · 2020: 3 · 2019: 6 · 2018: 6 · 2017: 6 · 2016: 3 · 2015: 6 · 2014: 3 · 2013: 4 · 2012: 5
FWCI
3.60
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Topics
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
integrins, epithelial morphogenesis, apical-basal polarity, basement membrane, extracellular matrix, alpha2beta1 integrin, alpha6beta4 integrin, alpha3beta1 integrin, Rac1, Cdc42, mitotic spindle positioning, cell-matrix interactions, epithelial cysts
MeSH terms
Animals, Cell Adhesion, Cell Line, Dogs, Epithelial Cells, Fluorescent Antibody Technique, Microscopy, Fluorescence, Immunoblotting, Cell Polarity, Microscopy, Confocal, RNA, Small Interfering, Integrin alpha2beta1, Integrin alpha6beta4, Integrin alpha3beta1

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