Title |
hZIP1 zinc uptake transporter down regulation and zinc depletion in prostate cancer
|
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Published in |
Molecular Cancer, September 2005
|
DOI | 10.1186/1476-4598-4-32 |
Pubmed ID | |
Authors |
Renty B Franklin, Pei Feng, B Milon, Mohamed M Desouki, Keshav K Singh, André Kajdacsy-Balla, Omar Bagasra, Leslie C Costello |
Abstract |
The genetic and molecular mechanisms responsible for and associated with the development and progression of prostate malignancy are largely unidentified. The peripheral zone is the major region of the human prostate gland where malignancy develops. The normal peripheral zone glandular epithelium has the unique function of accumulating high levels of zinc. In contrast, the ability to accumulate zinc is lost in the malignant cells. The lost ability of the neoplastic epithelial cells to accumulate zinc is a consistent factor in their development of malignancy. Recent studies identified ZIP1 (SLC39A1) as an important zinc transporter involved in zinc accumulation in prostate cells. Therefore, we investigated the possibility that down-regulation of hZIP1 gene expression might be involved in the inability of malignant prostate cells to accumulate zinc. To address this issue, the expression of hZIP1 and the depletion of zinc in malignant versus non-malignant prostate glands of prostate cancer tissue sections were analyzed. hZIP1 expression was also determined in malignant prostate cell lines. |
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