نتایج جستجو برای: proteasome inhibitor

تعداد نتایج: 224881  

Journal: :The Journal of pharmacology and experimental therapeutics 2003
Richard C Zangar Thomas A Kocarek Shang Shen Nikki Bollinger Michael S Dahn Donna W Lee

We have previously reported that CYP3A cross-links with polyubiquitinated proteins in microsomes from nicardipine-treated rats in a process that is distinct from classical polyubiquitination. To further examine the role of the proteasome in CYP3A degradation, we investigated the effects of proteasome inhibitors lactacystin, MG132, proteasome inhibitor 1, and hemin in primary cultures of rat and...

2016
Susan J. Lee Konstantin Levitsky Francesco Parlati Mark K. Bennett Shirin Arastu‐Kapur Lois Kellerman Tina F. Woo Alvin F. Wong Kyriakos P. Papadopoulos Ruben Niesvizky Ashraf Z. Badros Ravi Vij Sundar Jagannath David Siegel Michael Wang Gregory J. Ahmann Christopher J. Kirk

While proteasome inhibition is a validated therapeutic approach for multiple myeloma (MM), inhibition of individual constitutive proteasome (c20S) and immunoproteasome (i20S) subunits has not been fully explored owing to a lack of effective tools. We utilized the novel proteasome constitutive/immunoproteasome subunit enzyme-linked immunosorbent (ProCISE) assay to quantify proteasome subunit occ...

2016
A M Rajan S Kumar

The treatment of multiple myeloma (MM) is rapidly evolving. In the United States, four drugs (panobinostat, ixazomib, daratumumab and elotuzumab) were approved for the treatment of MM in 2015. As a result of improved diagnosis and therapy, there has been a dramatic improvement in the outcome of MM in the last decade, probably more than any other malignancy. Numerous agents continue to be studie...

Journal: :Investigative ophthalmology & visual science 2005
Niranjan Awasthi B J Wagner

PURPOSE Studies have shown that proteasome inhibition protects lens epithelial cells (LECs) against interferon (IFN)-gamma-induced apoptosis. The present study was conducted to test the hypothesis that proteasome inhibition can protect lens cells against apoptosis by upregulating heat shock protein (HSP) expression. METHODS Murine lens epithelial alphaTN4-1 cells were treated with combination...

Journal: :Clinical cancer research : an official journal of the American Association for Cancer Research 2006
James C Cusack Rong Liu Lijun Xia Ta-Hsiang Chao Christine Pien Wei Niu Vito J Palombella Saskia T C Neuteboom Michael A Palladino

PURPOSE In the current study, we examine the effects of a novel proteasome inhibitor, NPI-0052 (salinosporamide A), on proteasome function and nuclear factor-kappaB activation and evaluate its ability to enhance treatment response in colon cancer xenografts when administered orally. EXPERIMENTAL DESIGN The effects of treatment on nuclear factor-kappaB activation, cell cycle regulation, and ap...

2009
Deborah J. Kuhn Sally A. Hunsucker Qing Chen Peter M. Voorhees Marian Orlowski Robert Z. Orlowski

1Department of Lymphoma and Myeloma, Division of Cancer Medicine, The University of Texas M. D. Anderson Cancer Center, Houston; 2The University of North Carolina at Chapel Hill Lineberger Comprehensive Cancer Center; 3Department of Pharmacology, Mount Sinai School of Medicine, New York, NY; and 4Department of Experimental Therapeutics, Division of Cancer Medicine, The University of Texas M. D....

Journal: :The Biochemical journal 2013
Marianna Halasi Ming Wang Tanmay S Chavan Vadim Gaponenko Nissim Hay Andrei L Gartel

NAC (N-acetyl-L-cysteine) is commonly used to identify and test ROS (reactive oxygen species) inducers, and to inhibit ROS. In the present study, we identified inhibition of proteasome inhibitors as a novel activity of NAC. Both NAC and catalase, another known scavenger of ROS, similarly inhibited ROS levels and apoptosis associated with H₂O₂. However, only NAC, and not catalase or another ROS ...

Journal: :Biomolecular concepts 2012
Andrei L Gartel

Abstract Proteasome inhibitors are used as anticancer drugs, however, the precise mechanisms of their selective activity against cancer cells are not understood well. While proteasome inhibitors stabilize the majority of cellular proteins through inhibition of proteasome activity, they also paradoxically downregulate several other proteins. We recently discovered that proteasome inhibitors supp...

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