alexa Sodium/Glucose Co-transporter 1 Expression Increases in Human Diseased Prostate | OMICS International | Abstract
ISSN: 1948-5956

Journal of Cancer Science & Therapy
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Research Article

Sodium/Glucose Co-transporter 1 Expression Increases in Human Diseased Prostate

Alicia Blessing1, Lei Xu1, Guang Gao1, Lakshmi Reddy Bollu1, Jiangong Ren1, Hangwen Li2, Xuefeng Wu1, Fei Su1, Wei-Chien Huang3, Mien- Chie Hung3,4, Lei Huo5, Ganesh S Palapattu2 and Zhang Weihua1*

1Department of Biology and Biochemistry, University of Houston, Houston, TX, 77204, USA

2Department of Urology, Methodist Hospital Research Institute, Houston, TX, 77030, USA

3Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University Hospital, Taichung 404, Taiwan

4Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer, Center, Houston, TX 77030, USA

5Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA

*Corresponding Author:
Zhang Weihua, PhD
Assistant Professor
Department of Biology and Biochemistry
College of Natural Sciences and Mathematics
University of Houston, Houston
TX 77204-5001, Office: HSC358, USA
Tel: 713-743-8382
E-mail: [email protected]

Received date: June 30, 2012; Accepted date: August 28, 2012; Published date: August 30, 2012

Citation: Blessing A, Xu L, Gao G, Bollu LR, Ren J, et al. (2012) Sodium/Glucose Co-transporter 1 Expression Increases in Human Diseased Prostate. J Cancer Sci Ther 4: 306-312. doi:10.4172/1948-5956.1000159

Copyright: © 2012 Blessing A, 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

Sodium/glucose co-transporter 1 (SGLT1) is an active glucose transporter that takes up glucose into cells independent of the extracellular concentration of glucose. This transporter plays a critical role in maintaining glucose homeostasis at both physiological and pathological levels. The expression level of SGLT1 in normal and diseased human prostatic tissue has not been determined. We produced two rabbit polyclonal antibodies against human SGLT1, one each for immunohistochemical and Western blot analyses, and characterized the expression of SGLT1 in human prostate tissues: normal prostate (n=3), benign prostatic hyperplasia (BPH) (n=53), prostatic intraepithelial neoplasia (PIN) (n=9), and prostate cancer (PCa) (n=44). In normal prostate tissue, SGLT1 was weakly expressed exclusively in the epithelium. The transporter was significantly increased in the basal cells and stromal cells of BPH, increased in the epithelial cells of PIN, and frequently overexpressed in stromal cells and universally overexpressed in the tumor cells of PCa. The pattern of expression was shown as membranous/ cytoplasmic staining in low-grade cancer cells and nuclear envelope staining in high-grade cancer cells. The SGLT1-positive stromal cells of BPH and PCa tissues were negative for tenascin, a marker of reactive stromal cells. We concluded that SGLT1 is up-regulated in BPH and PCa, and SGLT1 may serve as a potential therapeutic target for treating these prostate disorders.

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