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Enrichment of Extracellular Matrix Proteins from Tissues and Digestion into Peptides for Mass Spectrometry Analysis
Published on: July 23, 2015
The matrilins: modulators of extracellular matrix assembly
Andreas R Klatt1, Ann-Kathrin A Becker, Cristian D Neacsu
1Institute for Clinical Chemistry, University of Cologne, Germany.
The International Journal of Biochemistry & Cell Biology
|December 18, 2010
Summary
Matrilins are extracellular proteins crucial for cartilage and matrix assembly. Mutations in matrilin-3 cause skeletal dysplasias and osteoarthritis by disrupting matrix structure or cell response.
Area of Science:
- Biochemistry
- Molecular Biology
- Structural Biology
Background:
- Matrilins are oligomeric extracellular adaptor proteins abundant in cartilage.
- They interact with collagen, aggrecan, and other matrix components, facilitating matrix assembly.
- Matrilin binding avidity is modulated by alternative splicing, processing, and oligomerization.
Purpose of the Study:
- To review matrilin structure and function in extracellular matrix assembly.
- To elucidate pathophysiological mechanisms in diseases involving skeletal malformations and cartilage degeneration.
Main Methods:
- Literature review of matrilin structure, function, and disease associations.
- Analysis of matrilin interactions with extracellular matrix components and cell surface receptors.
- Examination of genetic mutations and their impact on matrilin function and disease phenotypes.
Main Results:
- Matrilins connect fibrillar components and mediate interactions within the aggrecan gel.
- Matrilin-3 mutations cause endoplasmic reticulum retention leading to skeletal dysplasia or extracellular assembly defects linked to osteoarthritis and disc degeneration.
- Matrilin-cell interactions and their physiological relevance remain unclear, with knockout mice showing no pronounced phenotypes.
Conclusions:
- Matrilin structure and function are critical for understanding extracellular matrix assembly.
- Matrilin mutations provide insights into the pathogenesis of skeletal malformations and cartilage degeneration.
- Further research is needed to clarify the role of matrilin-cell interactions in physiological and pathological processes.
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