Related Experiment Videos
Serpinopathies and the conformational dementias
David A Lomas1, Robin W Carrell
1Department of Medicine, University of Cambridge, Cambridge Institute for Medical Research, Wellcome Trust/MRC Building, Hills Road, Cambridge CB2 2XY, UK. dal16@cam.ac.uk
Nature Reviews. Genetics
|October 3, 2002
Summary
Serpins, crucial proteinase inhibitors, can form harmful polymers due to mutations. This protein aggregation leads to diseases like emphysema, cirrhosis, and neurodegenerative conditions, including dementia.
Area of Science:
- Biochemistry
- Molecular Biology
- Genetics
Background:
- The serpin superfamily regulates proteinase activity in diverse biological pathways.
- Serpins undergo conformational changes for inhibition, but this flexibility can lead to mutations.
- Mutations cause aberrant protein aggregation and polymer formation.
Purpose of the Study:
- To explore the link between serpin mutations, protein aggregation, and disease.
- To understand how serpin conformational changes contribute to disease pathology.
- To connect serpinopathies with other conformational diseases.
Main Methods:
- Analysis of serpin structure-function relationships.
- Investigating the molecular mechanisms of serpin polymerization.
- Reviewing clinical data linking serpin mutations to diseases.
Main Results:
- Point mutations in serpins trigger intermolecular linkage and polymer formation.
- Protein aggregation results in cumulative cellular dysfunction.
- Serpin mutations are implicated in diseases such as cirrhosis, emphysema, and late-onset dementia.
Conclusions:
- Serpin aggregation is a key mechanism in various conformational diseases.
- Understanding serpinopathies offers insights into diseases like Alzheimer's and prion encephalopathies.
- Targeting serpin conformational dynamics may offer therapeutic strategies.