Combination bortezomib and rituximab treatment affects multiple survival and death pathways to promote apoptosis in mantle cell lymphoma

被引：32

作者：

Alinari, Lapo ^{[1
]}

White, Valerie L. ^{[1
]}

Earl, Christian T. ^{[1
]}

Ryan, Timothy P. ^{[1
]}

Johnston, Jeffrey S. ^{[2
]}

Dalton, James T. ^{[2
]}

Ferketich, Amy K. ^{[3
]}

Lai, Raymond ^{[4
]}

Lucas, David M. ^{[1
]}

Porcu, Pierluigi ^{[1
]}

Blum, Kristie A. ^{[1
]}

Byrd, John C. ^{[1
]}

Baiocchi, Robert A. ^{[1
]}

机构：

[1] Ohio State Univ, Dept Internal Med, Div Hematol & Oncol, Columbus, OH 43210 USA

[2] Ohio State Univ, Coll Pharm, Columbus, OH 43210 USA

[3] Ohio State Univ, Dept Biostat, Columbus, OH 43210 USA

[4] Univ Alberta, Dept Internal Med, Edmonton, AB, Canada

来源：

MABS | 2009年 / 1卷 / 01期

关键词：

mantle cell lymphoma; proteasome inhibition; CD20; survival and death pathways; apoptosis; NF-KAPPA-B; PROTEASOME INHIBITOR BORTEZOMIB; NON-HODGKINS-LYMPHOMA; ANTI-CD20; MONOCLONAL-ANTIBODY; PHASE-I TRIAL; CONSTITUTIVE ACTIVATION; CYCLE ARREST; SOLID TUMORS; CANCER; ESTABLISHMENT;

D O I：

10.4161/mabs.1.1.7472

中图分类号：

R-3 [医学研究方法]; R3 [基础医学];

学科分类号：

1001 ;

摘要：

Mande cell lymphoma. (MCL) is a distinct histologic subtype of B cell non-Hodgkins lymphoma (NHL) associated with an aggressive clinical course. Inhibition of the ubiquitin-proteasome pathway modulates survival and proliferation signals in MCL and has shown clinical benefit in this disease. This has provided rationale for exploring combination regimens with B-cell selective immunotherapies such as rituximab. In this study, we examined the effects of combined treatment with bortezomib and rituximab on patient-derived MCL cell lines (Jeko, Mino, SP53) and tumor samples from patients with MCL where we validate reversible proteasome inhibition concurrent with cell cycle arrest and additive induction of apoptosis. When MCL cells were exposed to single agent bortezomib or combination bortezomib/rituximab, caspase dependent and independent apoptosis was observed. Single agent bortezomib or rituximab treatment of Mino and Jeko cell lines and patient samples resulted in decreased levels of nuclear NF kappa B complex(es) capable of binding p65 consensus oligonudeotides, and this decrease was enhanced by the combination. Constitutive activation of the Akt pathway was also diminished with bortezomib alone or in combination with rituximab. On the basis of in vitro data demonstrating additive apoptosis and enhanced NF kappa B and phosphorylated Akt depletion in MCL with combination bortezomib plus rituximab, a phase II trial of bortezomib-rituximab in patients with relapsed/refractory MCL is underway.

引用

页码：31 / 40

页数：10

共 54 条

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