Cited by 21Connective tissue disorders researchCell Adhesion Molecules ResearchSkin and Cellular Biology Research

Type III and V collagens modulate the expression and assembly of EDA+fibronectin in the extracellular matrix of defective Ehlers-Danlos syndrome fibroblasts

Zoppi, Nicoletta, Ritelli, Marco, Colombi, Marina·2012·Biochimica et Biophysica Acta (BBA) - General Subjects

Abstract

Background Alternative splicing of EDA fibronectin (FN) region is a cell type- and development-regulated mechanism controlled by pathological processes, growth factors and extracellular matrix (ECM). Classic and vascular Ehlers-Danlos syndrome (cEDS and vEDS) are connective tissue disorders caused by COL5A1/COL5A2 and COL3A1 gene mutations, leading to an in vivo abnormal collagen fibrillogenesis and to an in vitro defective organisation in the ECM of type V (COLLV) and type III collagen (COLLIII). These defects induce the FN-ECM disarray and the decrease of COLLs and FN receptors, the α2β1 and α5β1 integrins. Purified COLLV and COLLIII restore the COLL-FN-ECMs in both EDS cell strains.Methods Real-time PCR, immunofluorescence microscopy, and Western blotting were used to investigate the effects of COLLs on FN1 gene expression, EDA region alternative splicing, EDA(+)-FN-ECM assembly, α5β1 integrin and EDA(+)-FN-specific α9 integrin subunit organisation, α5β1 integrin and FAK co-regulation in EDS fibroblasts.Results COLLV-treated cEDS and COLLIII-treated vEDS fibroblasts up-regulate the FN1 gene expression, modulate the EDA(+) mRNA maturation and increase the EDA(+)-FN levels, thus restoring a control-like FN-ECM, which elicits the EDA(+)-FN-specific α9β1 integrin organisation, recruits the α5β1 integrin and switches on the FAK binding and phosphorylation.Conclusion COLLs regulate the EDA(+)-FN-ECM organisation at transcriptional and post-transcriptional level and activate the α5β1-FAK complexes. COLLs also recruit the α9β1 integrin involved in the assembly of the EDA(+)-FN-ECM in EDS cells.General significance The knowledge of the COLLs-ECM role in FN isotype expression and in EDA(+)-FN-ECM-mediated signal transduction adds insights in the ECM remodelling mechanisms in EDS cells.

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Crossref · 10.1016/j.bbagen.2012.06.004

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Authors
Zoppi, N., Ritelli, M., & Colombi, M.
Affiliations
University of Brescia (IT)
Corresponding author
Zoppi, Nicoletta
Venue
Biochimica et Biophysica Acta (BBA) - General Subjects
Publisher
Elsevier BV
Published
2012-10
Volume
1820
Issue
10
Pages
1576-1587
ISSN
0304-4165 (ISSN-L)
OpenAlex
W1967974177
Cited by
21
References
57
Citations by year
2025: 2 · 2023: 1 · 2019: 3 · 2018: 4 · 2016: 1 · 2015: 4 · 2014: 1 · 2013: 5
FWCI
1.92
Type
journal article
Language
en
Open access
closed
Locations
  • Biochimica et Biophysica Acta (BBA) - General Subjects (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Research Information System (Università degli Studi di Brescia) (submittedVersion)
Funders
  • Ministero dell'Istruzione, dell'Università e della Ricerca, Fondo per gli Investimenti della Ricerca di Base 2009–2011
  • Regione Lombardia (Network-Enabled Drug Design) 2011
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 › Skin and Cellular Biology Research
Keywords
Ehlers-Danlos syndrome, type V collagen, type III collagen, ED-A fibronectin, extracellular matrix assembly, fibroblasts, integrin α9β1, alpha5beta1 integrin, focal adhesion kinase, collagen fibrillogenesis, connective tissue diseases, extracellular matrix remodeling
MeSH terms
Cells, Cultured, Ehlers-Danlos Syndrome, Extracellular Matrix, Female, Fibroblasts, Fibronectins, Gene Expression Regulation, Humans, Male, Case-Control Studies, Integrins, Protein Isoforms, Collagen Type III, Collagen Type V, Integrin alpha5beta1, Focal Adhesion Kinase 1, Protein Multimerization

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