Therapeutic targeting of cancer cell cycle using proteasome inhibitors

Cell Division

Durga Prasad Mishra¹  Namrata Rastogi¹ 

[1] Cell Death Research Laboratory, Division of Endocrinology, CSIR- Central Drug Research Institute, Lucknow, 226001, India

关键词: Cancer;    Cell cycle;    Proteasome inhibitors;    Cell division;    Proteasome;   

Others  :  790932
DOI  :  10.1186/1747-1028-7-26

 received in 2012-11-06, accepted in 2012-11-15,  发布年份 2012

【 摘 要 】

Proteasomes are multicatalytic protease complexes in the cell, involved in the non-lysosomal recycling of intra-cellular proteins. Proteasomes play a critical role in regulation of cell division in both normal as well as cancer cells. In cancer cells this homeostatic function is deregulated leading to the hyperactivation of the proteasomes. Proteasome inhibitors (PIs) are a class of compounds, which either reversibly or irreversibly block the activity of proteasomes and induce cancer cell death. Interference of PIs with the ubiquitin proteasome pathway (UPP) involved in protein turnover in the cell leads to the accumulation of proteins engaged in cell cycle progression, which ultimately put a halt to cancer cell division and induce apoptosis. Upregulation of many tumor suppressor proteins involved in cell cycle arrest are known to play a role in PI induced cell cycle arrest in a variety of cancer cells. Although many PIs target the proteasomes, not all of them are effective in cancer therapy. Some cancers develop resistance against proteasome inhibition by possibly activating compensatory signaling pathways. However, the details of the activation of these pathways and their contribution to resistance to PI therapy remain obscure. Delineation of these pathways may help in checking resistance against PIs and deducing effective combinational approaches for improved treatment strategies. This review will discuss some of the signaling pathways related to proteasome inhibition and cell division that may help explain the basis of resistance of some cancers to proteasome inhibitors and underline the need for usage of PIs in combination with traditional chemotherapy.

【 授权许可】

   
2012 Rastogi and Mishra; licensee BioMed Central Ltd.

【 图 表 】

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