Drug discovery and assay development in the ubiquitin-proteasome system
1Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands. c.berkers@nki.nl
Abstract:
The observation that tumour cells are more sensitive to pharmacological inhibition of the proteasome than normal cells has led to the development of the proteasome inhibitor bortezomib. To date, this is the only proteasome inhibitor that has been approved for clinical use. The clinical success of bortezomib, combined with the occurrence of adverse effects and the development of clinical resistance against this compound, has initiated the development of a broad range of second-generation proteasome inhibitors as well as of assays that can be used to establish a relationship between the extent and type of proteasome inhibition and the effectiveness of a particular drug. In the present paper, we discuss new strategies that may be used in the future to overcome drug resistance and to broaden the use of proteasome inhibitors for the treatment of both cancer and infectious and autoimmune disease.
Insights
Proteasome inhibitors like bortezomib show promise in cancer treatment. New strategies are being developed to overcome drug resistance and expand their use for various diseases.
Area of Science:
- Pharmacology
- Oncology
- Immunology
Background:
- Tumor cells exhibit greater sensitivity to proteasome inhibition than normal cells.
- Bortezomib is the only approved proteasome inhibitor, demonstrating clinical success.
- Adverse effects and resistance to bortezomib necessitate the development of new agents.
Purpose of the Study:
- To discuss novel strategies for overcoming drug resistance to proteasome inhibitors.
- To explore broadening the application of proteasome inhibitors beyond cancer treatment.
- To review the development of second-generation proteasome inhibitors and relevant assays.
Main Methods:
- Review of current literature on proteasome inhibitors.
- Analysis of strategies to combat drug resistance.
- Discussion of assays for proteasome inhibition and drug effectiveness.
Main Results:
- Development of second-generation proteasome inhibitors is underway.
- Assays are being developed to correlate proteasome inhibition with drug efficacy.
- New strategies aim to enhance the therapeutic index of proteasome inhibitors.
Conclusions:
- Overcoming drug resistance is crucial for expanding proteasome inhibitor therapy.
- Proteasome inhibitors hold potential for treating infectious and autoimmune diseases.
- Future strategies will focus on personalized medicine approaches for proteasome inhibitor treatment.
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