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Catenins

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Related Experiment Video

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Generating a Fractal Microstructure of Laminin-111 to Signal to Cells

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Published on: September 28, 2020

Tenascin-X: beyond the architectural function.

Ulrich Valcourt¹, Lindsay B Alcaraz, Jean-Yves Exposito

¹a Inserm U1052, Centre de Recherche en Cancérologie de Lyon , Lyon , France.

Cell Adhesion & Migration

|March 21, 2015

Summary

Tenascin-X (TN-X) is a key extracellular matrix protein crucial for tissue structure and cell adhesion. Emerging research reveals its role in regulating signaling pathways like TGF-β, impacting cell plasticity.

Keywords:

ECM, extracellular matrix EDS, Ehlers-Danlos syndrome EGF, epidermal growth factor EMT, epithelial-to-mesenchymal transition Ehlers-Danlos syndrome (EDS)FAK, focal adhesion kinase FBG, fibrinogen-like domain FNIII, fibronectin type III module LAP, latency associated peptide MMP, matrix metalloproteinase SLC, small latent complex TGF-β TGF-β activation TN, tenascin TSP-1, thrombospondin-1 VEGF, vascular endothelial growth factor cell signaling epithelial-to-mesenchymal transition (EMT)integrin α11β1 matricellular protein tenascin-X transforming growth factor-β

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Area of Science:

Extracellular matrix biology
Molecular and cell biology
Connective tissue disorders

Background:

Tenascin-X (TN-X) is the largest glycoprotein in the tenascin (TN) family, essential for extracellular matrix structure.
Loss-of-function mutations in TN-X cause a connective tissue disorder, highlighting its critical architectural role.
TN-X also functions as a matricellular protein, modulating cell adhesion and potentially regulating signaling pathways.

Purpose of the Study:

To elucidate the cellular functions associated with the anti-adhesive properties of Tenascin-X.
To investigate the role of TN-X as an extracellular regulator of signaling pathways.
To determine if TN-X's signaling functions are linked to its matricellular properties.

Main Methods:

The study likely involved analyzing genetic data from patients with connective tissue disorders.
In vitro experiments using cell cultures to assess cell adhesion and migration modulated by TN-X.
Biochemical assays to investigate the interaction of TN-X with signaling molecules like TGF-β.

Main Results:

Tenascin-X loss-of-function leads to connective tissue disorders, confirming its architectural importance.
TN-X exhibits anti-adhesive properties, though its specific cellular functions remain to be fully elucidated.
Evidence suggests TN-X regulates Transforming Growth Factor (TGF)-β bioavailability and modulates epithelial cell plasticity.

Conclusions:

Tenascin-X is vital for both tissue architecture and cell behavior.
Further research is needed to connect TN-X's matricellular functions with its newly identified roles in extracellular signaling.
Understanding these links could reveal new therapeutic targets for connective tissue disorders and cancer.