New concepts in basement membrane biology.
Willi Halfter1, Philipp Oertle2, Christophe A Monnier2
1Department of Ophthalmology, University Hospital Basel, Switzerland.
The FEBS Journal
|August 25, 2015
Summary
Basement membranes (BMs) are crucial extracellular matrix structures. Recent studies reveal their dynamic nature, age-related changes, and essential roles in tissue organization and evolution.
Area of Science:
- Biochemistry
- Cell Biology
- Evolutionary Biology
Background:
- Basement membranes (BMs) are extracellular matrix sheets surrounding tissues, traditionally studied via electron microscopy and in vitro assays.
- Previous understanding of BM structure and function relied on limited methodologies, potentially overlooking key aspects.
Purpose of the Study:
- To explore novel insights into basement membrane structure, composition, and function using advanced techniques.
- To investigate age-related changes, mechanical properties, and evolutionary significance of basement membranes.
Main Methods:
- Mass spectrometry-based proteomics for compositional analysis.
- Atomic force microscopy for ultrastructural and biomechanical assessments.
- Phenotype analysis in mutant mice and human patients.
Main Results:
- BMs exhibit age-related compositional and structural alterations.
- Altered mechanical stiffness in BMs correlates with pathologies.
- BMs are thicker than previously estimated, with laminin critical for stability.
- Evidence suggests BMs are bi-functionally organized and crucial for tissue arrangement.
Conclusions:
- Basement membranes possess significant tissue-organizing functions.
- BMs are ancient structures vital for metazoan evolution.
- Advanced analytical methods provide new perspectives on BM complexity.
Keywords:
basal laminabasement membranebiomechanical propertiescollagen IVlamininmembrane asymmetrynidogenperlecanMore Related Videos
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