Cited by 37Connective tissue disorders researchCell Adhesion Molecules ResearchCellular Mechanics and Interactions

Multifaced Roles of the αvβ3 Integrin in Ehlers–Danlos and Arterial Tortuosity Syndromes’ Dermal Fibroblasts

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Zoppi, Nicoletta, Chiarelli, Nicola, Ritelli, Marco, Colombi, Marina·2018·International Journal of Molecular Sciences

Abstract

The αvβ3 integrin, an endothelial cells’ receptor-binding fibronectin (FN) in the extracellular matrix (ECM) of blood vessels, regulates ECM remodeling during migration, invasion, angiogenesis, wound healing and inflammation, and is also involved in the epithelial mesenchymal transition. In vitro-grown human control fibroblasts organize a fibrillar network of FN, which is preferentially bound on the entire cell surface to its canonical α5β1 integrin receptor, whereas the αvβ3 integrin is present only in rare patches in focal contacts. We report on the preferential recruitment of the αvβ3 integrin, due to the lack of FN–ECM and its canonical integrin receptor, in dermal fibroblasts from Ehlers–Danlos syndromes (EDS) and arterial tortuosity syndrome (ATS), which are rare multisystem connective tissue disorders. We review our previous findings that unraveled different biological mechanisms elicited by the αvβ3 integrin in fibroblasts derived from patients affected with classical (cEDS), vascular (vEDS), hypermobile EDS (hEDS), hypermobility spectrum disorders (HSD), and ATS. In cEDS and vEDS, respectively, due to defective type V and type III collagens, αvβ3 rescues patients’ fibroblasts from anoikis through a paxillin-p60Src-mediated cross-talk with the EGF receptor. In hEDS and HSD, without a defined molecular basis, the αvβ3 integrin transduces to the ILK-Snail1-axis inducing a fibroblast-to-myofibroblast-transition. In ATS cells, the deficiency of the dehydroascorbic acid transporter GLUT10 leads to redox imbalance, ECM disarray together with the activation of a non-canonical αvβ3 integrin-TGFBRII signaling, involving p125FAK/p60Src/p38MAPK. The characterization of these different biological functions triggered by αvβ3 provides insights into the multifaced nature of this integrin, at least in cultured dermal fibroblasts, offering future perspectives for research in this field.

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Authors
Zoppi, N., Chiarelli, N., Ritelli, M., & Colombi, M.
Affiliations
University of Brescia (IT)
Corresponding author
Colombi, Marina
Venue
International Journal of Molecular Sciences
Publisher
MDPI AG
Published
2018-03-26
Volume
19
Issue
4
Pages
982
ISSN
1422-0067 (ISSN-L)
OpenAlex
W2791421919
Cited by
37
References
185
Citations by year
2026: 4 · 2025: 2 · 2024: 7 · 2023: 6 · 2022: 2 · 2021: 5 · 2020: 3 · 2019: 6 · 2018: 1
FWCI
0.53
Type
journal article
Language
en
Open access
Locations
  • International Journal of Molecular Sciences (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Institutional Research Information System (Università degli Studi di Brescia) (submittedVersion, cc-by-nc-nd)
Funders
Ministero dell’Istruzione, dell’Università e della Ricerca
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Connective tissue disorders research
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
integrin αvβ3, Ehlers-Danlos syndrome, arterial tortuosity syndrome, dermal fibroblasts, fibronectin, extracellular matrix remodeling, anoikis, p60src, EGF receptor, p125FAK, myofibroblast differentiation, GLUT10, dehydroascorbic acid, redox imbalance, hypermobility spectrum disorders, connective tissue diseases
MeSH terms
Arteries, Ehlers-Danlos Syndrome, Humans, Joint Instability, Skin Diseases, Genetic, Signal Transduction, Collagen Type III, Collagen Type V, Integrin alphaVbeta3, Vascular Malformations

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