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Protein misfolding and human disease.
Niels Gregersen1, Peter Bross, Søren Vang
1Research Unit for Molecular Medicine, Institute of Clinical Medicine, Aarhus University Hospital and Faculty of Health Sciences, University of Aarhus, Skejby Sygehus, 8200 Aarhus N, Denmark. nig@ki.au.dk
Annual Review of Genomics and Human Genetics
|May 26, 2006
Summary
Misfolded proteins overwhelm cellular defenses in aging and genetic diseases, leading to accumulation and potential toxicity. Understanding this common cellular pathology may guide new treatments for various age-dependent and genetic disorders.
Area of Science:
- Cell Biology
- Biochemistry
- Genetics
Background:
- Protein misfolding is a natural cellular event.
- Protein quality control (PQC) systems manage misfolded proteins in healthy cells.
- Aging and genetic disorders can impair PQC, leading to protein accumulation.
Purpose of the Study:
- To explore the common cellular pathology of protein misfolding diseases.
- To illustrate how PQC capacity influences protein aggregation and cellular dysfunction.
- To highlight the potential for a unified therapeutic framework for diverse misfolding disorders.
Main Methods:
- Review of cellular mechanisms of protein quality control.
- Analysis of distinct protein misfolding diseases (e.g., phenylketonuria, Parkinson's disease).
- Conceptual framework development linking PQC capacity to disease pathogenesis.
Main Results:
- Impaired PQC leads to accumulation of misfolded proteins.
- Accumulated proteins can be degraded or form toxic aggregates.
- Diverse diseases share a common underlying cellular pathology related to protein misfolding.
Conclusions:
- Protein misfolding and PQC dysfunction are central to various genetic and age-dependent diseases.
- A common cellular framework for protein misfolding diseases emerges.
- This paradigm may guide the development of novel intervention and treatment strategies.