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cis -Hydroxyproline-mediated pancreatic carcinoma growth inhibition in mice

cis -Hydroxyproline-mediated pancreatic carcinoma growth inhibition in mice,10.1007/s00384-010-0946-1,International Journal of Colorectal Disease,Diet

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cis -Hydroxyproline-mediated pancreatic carcinoma growth inhibition in mice  
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Purpose  This study addressed the question of whether the collagen metabolism modulator cis-4-Hydroxy-l-proline (CHP) is applicable for potential use as a therapeutic inhibitor of pancreatic carcinoma cell growth. Methods  Cell proliferation, as well as quantification of apoptosis of murine Panc02 cells, was assessed after CHP treatment. Supplementary, the effect of CHP on tumor growth was examined in the subcutaneous Panc02 model in vivo. Mice received daily intraperitoneal injections of CHP (300, 400, and 500 mg/kg bw). In addition to the assessment of systemic parameters (blood count, enzyme activities), histology (HE) and immunohistochemistry (Ki-67) were performed from resected tumor specimens. Results  Like reduction of metabolic activity, CHP also induced inhibition of cell growth in a dose-dependent manner, with however only slight increases in apoptosis. In vivo treatment of Panc02 tumors with CHP resulted in pronounced delay of tumor growth and decreases in tumor cell proliferation. Moreover, these effects were accompanied by a massive systemic leukocytosis as well increased leukocyte infiltration into the tumors subsequent to CHP therapy. Conclusions  CHP inhibits the proliferation of Panc02 tumor cells in a dose-dependent manner both in vitro and in vivo. Our presented data show that modulation of the collagen metabolism is an interesting strategy for treatment of pancreatic carcinoma.
Journal: International Journal of Colorectal Disease - INT J COLORECTAL DIS , vol. 25, no. 8, pp. 921-929, 2010
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