title: Proteasome inhibition in multiple myeloma: therapeutic implication.
abstract: Normal cellular functioning requires processing of proteins regulating cell cycle, growth, and apoptosis. The ubiquitin-proteasome pathway (UBP) modulates intracellular protein degradation. Specifically, the 26S proteasome is a multienzyme protease that degrades misfolded or redundant proteins; conversely, blockade of the proteasomal degradation pathways results in accumulation of unwanted proteins and cell death. Because cancer cells are more highly proliferative than normal cells, their rate of protein translation and degradation is also higher. This notion led to the development of proteasome inhibitors as therapeutics in cancer. The FDA recently approved the first proteasome inhibitor bortezomib (Velcade), formerly known as PS-341, for the treatment of newly diagnosed and relapsed/refractory multiple myeloma (MM). Ongoing studies are examining other novel proteasome inhibitors, in addition to bortezomib, for the treatment of MM and other cancers.
authors.affiliation: The Jerome Lipper Multiple Myeloma Center, Department of Medical Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: Dharminder
authors.initials: D
authors.lastname: Chauhan
authors.forename: Teru
authors.initials: T
authors.lastname: Hideshima
authors.forename: Kenneth C
authors.initials: KC
authors.lastname: Anderson
mesh_terms: D000818:Animals; D006801:Humans; D009101:Multiple Myeloma / Q000188:drug therapy* / Q000201:enzymology*; D011480:Protease Inhibitors / Q000494:pharmacology / Q000627:therapeutic use*; D046988:Proteasome Endopeptidase Complex / Q000378:metabolism; D061988:Proteasome Inhibitors
chemical_list: D011480:Protease Inhibitors; D061988:Proteasome Inhibitors; D046988:Proteasome Endopeptidase Complex