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Cancer Invest. 2011 Aug;29(7):439-50. doi: 10.3109/07357907.2011.590567.

Proteasome inhibition in myelodysplastic syndromes and acute myelogenous leukemia cell lines.

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  • 1Department of Medicine, Hematology/Oncology, University of Rochester Medical Center, Rochester, NY 14642, USA. jane


In this work, effects of bortezomib on apoptosis, clonal progenitor growth, cytokine production, and NF-κB expression in patients with MDS with cytopenias requiring transfusion support are examined. Bortezomib increased apoptosis in marrow mononuclear cells but had no effects on CFU-GM, BFU-E, or CFU-L content. No consistent effects on NF-κB activation in vivo were noted. To further define the role of bortezomib in AML and MDS, we examined it in combination with several targeted agents and chemotherapeutic agents in vitro. Combinations with arsenic trioxide, sorafenib, and cytarabine demonstrated synergistic in vitro effects in AML cell lines.

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