alexa NAD(P)H:Quinone Oxidoreductase 1 Expression in Human Reproductive System and Mitomycin-C Cytotoxicity: A New Chapter for Old Compounds?
ISSN: 2157-7099

Journal of Cytology & Histology
Open Access

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Research Article

NAD(P)H:Quinone Oxidoreductase 1 Expression in Human Reproductive System and Mitomycin-C Cytotoxicity: A New Chapter for Old Compounds?

Francesco Zappa*, Timothy Ward, Ennio Pedrinis, John Butler and Alan McGown

CRC Department of Drug Development, Paterson Institute for Cancer Research and Christie Hospital NHS Trust (F.Z., T.W., J.B., A.McG.), Manchester, UK and Institute of Pathology of Southern Switzerland (E.P.), Locarno, Switzerland

*Corresponding Author:
Francesco Zappa
Department Of Medical Oncology
Clinica Luganese, 6903 Lugano, Switzerland
Tel: +41 91 960 8147
Fax: +41 91 960 8580
E-mail: [email protected]

Received Date: December 03, 2013; Accepted Date: December 24, 2013; Published Date: December 26, 2013

Citation: Zappa F, Ward T, Pedrinis E, Butler J, McGown A (2013) NAD(P) H:Quinone Oxidoreductase 1 Expression in Human Reproductive System and Mitomycin-C Cytotoxicity: A New Chapter for Old Compounds? J Cytol Histol 5:209. doi: 10.4172/2157-7099.1000209

Copyright: © 2013 Zappa F, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

NAD(P)H:quinone oxidoreductase 1 (NQO1; DT-diaphorase; DTD) is a cytosolic two-electron reductase, and compounds of the family of quinones such as mitomycin C are efficiently bio-activated by this enzyme. The observation that DT-diaphorase is over-expressed in many cancerous tissues compared to normal tissues has provided us with a selective target that can be exploited in the design of novel anticancer agents. Because information about the cell-specific expression of DT-diaphorase was so scarce, this study was initiated to map the distribution of this enzyme in human tissues. We report here our findings concerning the reproductive organs. Tissue samples taken from various components of the human reproductive system were analysed for expression of DT-diaphorase by immunohistochemistry. We found a strong expression of this enzyme in testicular stromal cells (Leydig’s cells) and in the epithelium of the epididymis and Fallopian tube. These results suggest that quinones bio-activated by DT-diaphorase may be toxic to the reproductive system and cause clinical problems due to testosterone deficiency in men and infertility in both sexes. The implications of these observations need to be considered in pre-clinical evaluation of new anticancer quinones and in patients treated with these compounds.

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