TY - JOUR
T1 - A novel orally active proteasome inhibitor induces apoptosis in multiple myeloma cells with mechanisms distinct from Bortezomib
AU - Chauhan, Dharminder
AU - Catley, Laurence
AU - Li, Guilan
AU - Podar, Klaus
AU - Hideshima, Teru
AU - Velankar, Mugdha
AU - Mitsiades, Constantine
AU - Mitsiades, Nicolas
AU - Yasui, Hiroshi
AU - Letai, Anthony
AU - Ovaa, Huib
AU - Berkers, Celia
AU - Nicholson, Benjamin
AU - Chao, Ta-Hsiang
AU - Neuteboom, Saskia T C
AU - Richardson, Paul
AU - Palladino, Michael A
AU - Anderson, Kenneth C
PY - 2005/11
Y1 - 2005/11
N2 - Bortezomib therapy has proven successful for the treatment of relapsed and/or refractory multiple myeloma (MM); however, prolonged treatment is associated with toxicity and development of drug resistance. Here, we show that the novel proteasome inhibitor NPI-0052 induces apoptosis in MM cells resistant to conventional and Bortezomib therapies. NPI-0052 is distinct from Bortezomib in its chemical structure, effects on proteasome activities, mechanisms of action, and toxicity profile against normal cells. Moreover, NPI-0052 is orally bioactive. In animal tumor model studies, NPI-0052 is well tolerated and prolongs survival, with significantly reduced tumor recurrence. Combining NPI-0052 and Bortezomib induces synergistic anti-MM activity. Our study therefore provides the rationale for clinical protocols evaluating NPI-0052, alone and together with Bortezomib, to improve patient outcome in MM.
AB - Bortezomib therapy has proven successful for the treatment of relapsed and/or refractory multiple myeloma (MM); however, prolonged treatment is associated with toxicity and development of drug resistance. Here, we show that the novel proteasome inhibitor NPI-0052 induces apoptosis in MM cells resistant to conventional and Bortezomib therapies. NPI-0052 is distinct from Bortezomib in its chemical structure, effects on proteasome activities, mechanisms of action, and toxicity profile against normal cells. Moreover, NPI-0052 is orally bioactive. In animal tumor model studies, NPI-0052 is well tolerated and prolongs survival, with significantly reduced tumor recurrence. Combining NPI-0052 and Bortezomib induces synergistic anti-MM activity. Our study therefore provides the rationale for clinical protocols evaluating NPI-0052, alone and together with Bortezomib, to improve patient outcome in MM.
KW - Administration, Oral
KW - Animals
KW - Antineoplastic Agents/pharmacology
KW - Apoptosis/drug effects
KW - Boronic Acids/pharmacology
KW - Bortezomib
KW - Caspases/metabolism
KW - Cell Movement/drug effects
KW - Cell Proliferation/drug effects
KW - Drug Synergism
KW - Genes, bcl-2
KW - Humans
KW - Lactones/administration & dosage
KW - Lymphocytes/drug effects
KW - Mice
KW - Mitochondria/drug effects
KW - Multiple Myeloma/drug therapy
KW - NF-kappa B/metabolism
KW - Plasmacytoma/drug therapy
KW - Protease Inhibitors/pharmacology
KW - Proteasome Endopeptidase Complex/pharmacology
KW - Pyrazines/pharmacology
KW - Pyrroles/administration & dosage
KW - Tumor Cells, Cultured
UR - https://www.scopus.com/pages/publications/27644562277
U2 - 10.1016/j.ccr.2005.10.013
DO - 10.1016/j.ccr.2005.10.013
M3 - Journal article
C2 - 16286248
SN - 1535-6108
VL - 8
SP - 407
EP - 419
JO - Cancer Cell
JF - Cancer Cell
IS - 5
ER -