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Renal Capsule Xenografting and Subcutaneous Pellet Implantation for the Evaluation of Prostate Carcinogenesis and Benign Prostatic Hyperplasia
Published on: August 28, 2013
Cadmium-induced neoplastic transformation of human prostate epithelial cells
Keiichiro Nakamura1, Yutaka Yasunaga, Daejin Ko
1Center for Prostate Disease Research, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA.
Abstract:
Cadmium is a ubiquitous environmental human carcinogen. Epidemiological and animal studies have suggested its carcinogenic potential on the prostate. In the present study, non-tumorigenic human prostate epithelial cells (pRNS-1-1) immortalized by simian papovavirus (SV40) were transformed after repeated exposures to cadmium. Such transformants showed morphological alterations, anchorage-independent growth in soft agar, and formed tumors when transplanted into SCID mice. The tumors were characterized histologically as poorly-differentiated adenocarcinomas, expressing prostate-specific antigen (PSA), androgen receptor (AR), prostate stem cell antigen (PSCA), NKX3.1 and cytokeratin 8 (CK8). These findings provide evidence of malignant transformation of human prostate epithelial cells exposed to this environmentally important chemical.
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