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Chemical and pharmacological chaperones as new therapeutic agents

Published online by Cambridge University Press:  28 June 2007

Tip W. Loo
Affiliation:
Department of Medicine and Department of Biochemistry, University of Toronto, Toronto, Ontario, M5S 1A8, Canada.
David M. Clarke*
Affiliation:
Department of Medicine and Department of Biochemistry, University of Toronto, Toronto, Ontario, M5S 1A8, Canada.
*
*Corresponding author: David M. Clarke, Department of Medicine, University of Toronto, Rm 7342, Medical Sciences Building, 1 King's College Circle, Toronto, Ontario, M5S 1A8, Canada. Tel/Fax: +1 416 978 1105; E-mail: [email protected]

Abstract

Proteins that are exported from the cell, or targeted to the cell surface or other organelles, are synthesised and assembled in the endoplasmic reticulum and then delivered to their destinations. Point mutations – the most common cause of human genetic diseases – can inhibit folding and assembly of the protein in the endoplasmic reticulum. The unstable or partially folded mutant protein does not undergo trafficking and is usually rapidly degraded. A potential therapy for protein misfolding is to correct defective protein folding and trafficking using pharmacological chaperones. Pharmacological chaperones are substrates or modulators that appear to function by directly binding to the partially folded biosynthetic intermediate to stabilise the protein and allow it to complete the folding process to yield a functional protein. Initial clinical studies with pharmacological chaperones have successfully reduced clinical symptoms of disease. Therefore, pharmacological chaperones show great promise as a new class of therapeutic agents that can be specifically tailored for a particular genetic disease.

Type
Review Article
Copyright
Copyright © Cambridge University Press 2007

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References

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Further reading, resources and contacts

The following papers describe in detail the mechanisms of protein misfolding and aggregation that are not discussed in this review. Other diseases involving protein misfolding and/or aggregations are also reviewed.

The Cystic Fibrosis Foundation provides general information about Cystic Fibrosis and updates on new therapeutic developments:

Sanders, C.R. and Myers, J.K. (2004) Disease-related misassembly of membrane proteins. Annu Rev Biophys Biomol Struct 33, 25-51CrossRefGoogle ScholarPubMed
Arakawa, T. et al. (2006) Small molecule pharmacological chaperones: from thermodynamic stabilization to pharmaceutical drugs. Biochim Biophys Acta 1764, 1677-1687CrossRefGoogle ScholarPubMed
Gregersen, N. et al. (2006) Protein misfolding and human disease. Annu Rev Genomics Hum Genet 7, 103-124CrossRefGoogle ScholarPubMed
Rochet, J-C. (2007) Novel therapeutic strategies for treatment of protein misfolding. Expert Rev Mol Med 9, 1-34CrossRefGoogle ScholarPubMed
Smith, A.J. et al. Molecular cell biology of KATP channels: implications for neonatal diabetes. Expert Rev Mol Med (in press)Google Scholar
Sanders, C.R. and Myers, J.K. (2004) Disease-related misassembly of membrane proteins. Annu Rev Biophys Biomol Struct 33, 25-51CrossRefGoogle ScholarPubMed
Arakawa, T. et al. (2006) Small molecule pharmacological chaperones: from thermodynamic stabilization to pharmaceutical drugs. Biochim Biophys Acta 1764, 1677-1687CrossRefGoogle ScholarPubMed
Gregersen, N. et al. (2006) Protein misfolding and human disease. Annu Rev Genomics Hum Genet 7, 103-124CrossRefGoogle ScholarPubMed
Rochet, J-C. (2007) Novel therapeutic strategies for treatment of protein misfolding. Expert Rev Mol Med 9, 1-34CrossRefGoogle ScholarPubMed
Smith, A.J. et al. Molecular cell biology of KATP channels: implications for neonatal diabetes. Expert Rev Mol Med (in press)Google Scholar