Current Cancer Drug Targets

Ruiwen Zhang 
Texas Tech University Health Sciences Center
1300 Coulter Drive
Amarillo, TX 79106
USA

Back

Marizomib, a Proteasome Inhibitor for All Seasons: Preclinical Profile and a Framework for Clinical Trials

Author(s): B. C. Potts, M. X. Albitar, K. C. Anderson, S. Baritaki, C. Berkers, B. Bonavida, J. Chandra, D. Chauhan, J. C. Cusack, W. Fenical, I. M. Ghobrial, M. Groll, P. R. Jensen, K. S. Lam, G. K. Lloyd, W. McBride, D. J. McConkey, C. P. Miller, S. T.C. Neuteboom, Y. Oki, H. Ovaa, F. Pajonk, P. G. Richardson, A. M. Roccaro, C. M. Sloss, M. A. Spear, E. Valashi, A. Younes, M. A. Palladino.

Abstract:

The proteasome has emerged as an important clinically relevant target for the treatment of hematologic malignancies. Since the Food and Drug Administration approved the first-in-class proteasome inhibitor bortezomib (Velcade® ) for the treatment of relapsed/refractory multiple myeloma (MM) and mantle cell lymphoma, it has become clear that new inhibitors are needed that have a better therapeutic ratio, can overcome inherent and acquired bortezomib resistance and exhibit broader anti-cancer activities. Marizomib (NPI-0052; salinosporamide A) is a structurally and pharmacologically unique β-lactone-γ-lactam proteasome inhibitor that may fulfill these unmet needs. The potent and sustained inhibition of all three proteolytic activities of the proteasome by marizomib has inspired extensive preclinical evaluation in a variety of hematologic and solid tumor models, where it is efficacious as a single agent and in combination with biologics, chemotherapeutics and targeted therapeutic agents. Specifically, marizomib has been evaluated in models for multiple myeloma, mantle cell lymphoma, Waldenstroms macroglobulinemia, chronic and acute lymphocytic leukemia, as well as glioma, colorectal and pancreatic cancer models, and has exhibited synergistic activities in tumor models in combination with bortezomib, the immunomodulatory agent lenalidomide (Revlimid® ), and various histone deacetylase inhibitors. These and other studies provided the framework for ongoing clinical trials in patients with MM, lymphomas, leukemias and solid tumors, including those who have failed bortezomib treatment, as well as in patients with diagnoses where other proteasome inhibitors have not demonstrated significant efficacy. This review captures the remarkable translational studies and contributions from many collaborators that have advanced marizomib from seabed to bench to bedside.

Keywords: Proteasome inhibitor, marizomib, bortezomib, NF-κB, multiple myeloma, pharmacodynamics, combination therapy

Order Reprints Order Eprints Rights & PermissionsPrintExport

Article Details

VOLUME: 11
ISSUE: 3
Year: 2011
Page: [254 - 284]
Pages: 31
DOI: 10.2174/156800911794519716
Price: $58