normal 0 false false false en-us x-none fa background : the aim of the study was to assess the effects of combination of bortezomib moderate dose and continuous oral low dose melphalan and thalidomide and dexamethasone (bmtd regimen) in elderly patients aged ≥ 65 years with relapsed multiple myeloma (mm). methods : twenty four patients with advanced mm were enrolled to receive eight 3-week trea...

Abstract Objectives Bortezomib vial-sharing is commonly employed to maximize the treatment of patients with multiple myeloma (MM) in resource-limited setting. This strategy minimizes delays but reduces dose bortezomib received by patient. Herein, we aimed determine patterns and outcomes Filipino MM who reduced-dose bortezomib. Methods The records 47 adult MM, seen at our institution from 2016 2...

Previously, we reported that cancerous inhibitor of protein phosphatase 2A (CIP2A) mediates the apoptotic effect of bortezomib in hepatocellular carcinoma (HCC). Here, we report a proteasome-independent mechanism by which bortezomib induces autophagy in HCC. Our data indicate that bortezomib activated autophagy in a dose- and time- dependent manner in HCC cell lines including Huh-7, Sk-Hep1, an...

Proteasome inhibitors such as bortezomib are highly active in multiple myeloma by affecting signaling cascades and leading to a toxic buildup of misfolded proteins. Bortezomib-treated cells activate the cytoprotective heat shock response (HSR), including upregulation of heat shock proteins (HSPs). Here we inhibited the bortezomib-induced HSR by silencing its master regulator, Heat Shock Factor ...

Proteasome inhibition with bortezomib is a validated approach to the treatment of multiple myeloma, but drug resistance often emerges and limits its utility in the retreatment setting. To begin to identify some of the mechanisms involved, we developed bortezomib-resistant myeloma cell lines that, unlike previously reported models, showed no 5 subunit mutations. Instead, up-regulation of the ins...

VELCADE (bortezomib, PS-341), reversibly inhibits the 20S proteasome and exhibits cytotoxic and antitumor activities. Pretreatment of cancer cells with bortezomib increases the chemosensitivity of these cells, suggesting that bortezomib may be used in combination chemotherapy. The relative contributions of the five major human cytochromes P450 (P450s), 1A2, 2C9, 2C19, 2D6, and 3A4 (the focus of...

Previous studies have shown that retreatment of relapsed/refractory multiple myeloma (MM) with a second course of bortezomib therapy could be effective in heavily pre-treated patients. In this study, the results of a multicentre, retrospective survey were reported involving patients in Switzerland with MM who responded to initial bortezomib therapy; 43 patients were enrolled and 42 were evaluat...

Bortezomib-dexamethasone is widely used for relapsed myeloma in routine clinical practice, but comparative data versus single-agent bortezomib are lacking. This retrospective analysis compared second-line treatment with bortezomib-dexamethasone and bortezomib using 109 propensity score-matched pairs of patients treated in three clinical trials: MMY-2045, APEX, and DOXIL-MMY-3001. Propensity sco...

Bortezomib (BTZ), a proteasome inhibitor, is the first proteasome inhibitor to be used in clinical practice. Here we investigated the mechanisms underlying acquired bortezomib resistance in hepatocellular carcinoma (HCC) cells. Using stepwise selection, we established two acquired bortezomib-resistant HCC cell lines, a bortezomib-resistant HepG2 cell line (HepG2/BTZ) and bortezomib-resistant Hu...

Patients with multiple myeloma (MM) frequently present with concomitant renal dysfunction, and those requiring dialysis have particularly poor outcomes. Bortezomib is a reversible proteasome inhibitor with significant activity in MM. This retrospective case analysis evaluated the feasibility and activity of bortezomib-based therapy in MM patients (n = 24) requiring dialysis support for advanced...