The Ubiquitin-Proteasome Pathway and Resistance Mechanisms Developed Against the Proteasomal Inhibitors in Cancer Cells.

Abstract

BACKGROUND:

The ubiquitin-proteasome pathway is crucial for all cellular processes and is, therefore, a critical target for the investigation and development of novel strategies for cancer treatment. In addition, approximately 30% of newly synthesized proteins never attain their final conformations due to translational errors or defects in post-translational modifications; therefore, they are also rapidly eliminated by the ubiquitin-proteasome pathway.

OBJECTIVE:

Here, an effort was made to outline the recent findings deciphering the new molecular mechanisms involved in the regulation of ubiquitin-proteasome pathway as well as the resistance mechanisms developed against proteasome inhibitors in cell culture experiments and in the clinical trials.

RESULTS:

Since cancer cells have higher proliferation rates and are more prone to translational errors, they require the ubiquitin-proteasome pathway for selective advantage and sustained proliferation. Therefore, drugs targeting the ubiquitin-proteasome pathway are promising agents for the treatment of both hematological and solid cancers.

CONCLUSION:

A number of proteasome inhibitors are approved and used for the treatment of advanced and relapsed multiple myeloma. Unfortunately, drug resistance mechanisms may develop very fast within days of the start of the proteasome inhibitor-treatment either due to the inherent or acquired resistance mechanisms under selective drug pressure. However, a comprehensive understanding of the mechanisms leading to the proteasome inhibitor-resistance will eventually help the design and development of novel strategies involving new drugs and/or drug combinations for the treatment of a number of cancers.

• Authors: Azmi Yerlikaya, Ertan Kanbur
• Journal: Current drug targets (Curr Drug Targets) Vol. 21 Issue 13 Pg. 1313-1325 ( 2020) ISSN: 1873-5592 [Electronic] United Arab Emirates
• PMID: 32448101 (Publication Type: Journal Article, Review)
• Copyright: Copyright© Bentham Science Publishers; For any queries, please email at [email protected].

Chemical References

• Proteasome Inhibitors
• Ubiquitin
• Proteasome Endopeptidase Complex

Topics

• Animals
• Clinical Trials as Topic
• Drug Resistance, Neoplasm (genetics)
• Humans
• Neoplasms (drug therapy, metabolism)
• Proteasome Endopeptidase Complex (chemistry, metabolism)
• Proteasome Inhibitors (chemistry, pharmacology, therapeutic use)
• Ubiquitin (metabolism)