Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115860
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Type: Journal article
Title: A water soluble parthenolide analog suppresses in vivo tumor growth of two tobacco-associated cancers, lung and bladder cancer, by targeting NF-κB and generating reactive oxygen species
Author: Shanmugam, R.
Kusumanchi, P.
Appaiah, H.
Cheng, L.
Crooks, P.
Neelakantan, S.
Peat, T.
Klaunig, J.
Matthews, W.
Nakshatri, H.
Sweeney, C.
Citation: International Journal of Cancer, 2011; 128(10):2481-2494
Publisher: Wiley
Issue Date: 2011
ISSN: 0020-7136
1097-0215
Statement of
Responsibility: 
Rajasubramaniam Shanmugam, Praveen Kusumanchi, Hitesh Appaiah, Liang Cheng, Peter Crooks, Sundar Neelakantan, Tyler Peat, James Klaunig, William Matthews, Harikrishna Nakshatri, Christopher J. Sweeney
Abstract: Dimethylaminoparthenolide (DMAPT) is a water soluble parthenolide analog with preclinical activity in hematologic malignancies. Using non-small lung cancer (NSCLC) cell lines (A549 and H522) and an immortalized human bronchial epithelial cell line (BEAS2B) and TCC cell lines (UMUC-3, HT-1197 and HT-1376) and a bladder papilloma (RT-4), we aimed to characterize DMAPT's anticancer activity in tobacco-associated neoplasms. Flow cytometric, electrophoretic mobility gel shift assays (EMSA), and Western blot studies measured generation of reactive oxygen species (ROS), inhibition of NFκB DNA binding, and changes in cell cycle distribution and apoptotic proteins. DMAPT generated ROS with subsequent JNK activation and also decreased NFκB DNA binding and antiapoptotic proteins, TRAF-2 and XIAP. DMAPT-induced apoptotic cell death and altered cell cycle distribution with upregulation of p21 and p73 levels in a cell type-dependent manner. DMAPT suppressed cyclin D1 in BEAS2B. DMAPT retained NFκB and cell cycle inhibitory activity in the presence of the tobacco carcinogen nitrosamine ketone, 4(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK). Using a BrdU accumulation assay, 5-20 μM of DMAPT was shown to inhibit cellular proliferation of all cell lines by more than 95%. Oral dosing of DMAPT suppressed in vivo A549 and UMUC-3 subcutaneous xenograft growth by 54% (p = 0.015) and 63% (p < 0.01), respectively, and A549 lung metastatic volume by 28% (p = 0.043). In total, this data demonstrates DMAPT's novel anticancer properties in both early and late stage tobacco-associated neoplasms as well as its significant in vivo activity. The data provides support for the conduct of clinical trials in TCC and NSCLC.
Keywords: Dimethylaminoparthenolide; cell cycle; apoptosis; cancer
Rights: © 2010 UICC
RMID: 0030047843
DOI: 10.1002/ijc.25587
Appears in Collections:Medicine publications

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