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- W3204331496 abstract "Uterine leiomyosarcoma is a rare malignant smooth muscle tumor originating in the uterine wall that generally responds poorly to chemotherapy and radiation.We investigated the in vitro effects of a novel nutrient mixture containing lysine, proline, ascorbic acid, and green tea extract on the human leiomyosarcoma cell line SK-UT-1 by measuring cell proliferation, invasiveness, apoptosis, and expression of matrix metalloproteinases (MMP). We also tested the effects of nutrient mixture in vivo using nude mice.Human leiomyosarcoma SK-UT-1 cells were treated with different concentrations of nutrient mixture. Cell proliferation was determined by MTT assay; MMP expression by gelatinase zymography; invasion by Matrigel assay; migration by scratch test; apoptosis using Live Green caspase kit. In vivo studies were conducted on 5-6 weeks old female nude mice inoculated subcutaneously with 3 • 106 SK-UT-1 cells. The mice were fed a regular diet or a diet supplemented with 0.5% nutrient mixture. After four weeks, the mice were sacrificed and the tumors were weighed and processed for histology.In vitro, nutrient mixture treatment was not toxic to SK-UT-1 cells at 250 µg/ml but exhibited 20% and 40% cytotoxicity at 500 and 1000 µg/ml respectively. Zymography did not show bands for either MMP-2 or MMP-9 in SK-UT-1 cells. However, treatment with phorbol myristate acetate stimulated the expression of MMP-9, both active and inactive forms in equal proportion. Nutrient mixture inhibited the secretion of both active and inactive forms in a dose dependent manner. Invasion through Matrigel and migration by scratch test were inhibited in a dose dependent fashion, with both invasion and migration inhibited at 250 µg/ml. Live Green Caspase apoptosis assay demonstrated slight apoptosis at 100 µg/ml and significant apoptosis at 250 to 1000 µg/ml. The results of in vitro studies were further confirmed in vivo by showing 50% decrease in tumor weight, 40% reduction in tumor burden compared to the tumors from mice fed regular diet.The results suggest a therapeutic potential for nutrient mixture in uterine leiomyosarcoma treatment." @default.
- W3204331496 created "2021-10-11" @default.
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- W3204331496 date "2023-05-26" @default.
- W3204331496 modified "2023-10-18" @default.
- W3204331496 title "A nutrient mixture reduced tumor growth of SK-UT-1 human leiomyosarcoma cells in vivo and in vitro by inhibiting MMPs and inducing apoptosis" @default.
- W3204331496 doi "https://doi.org/10.32471/exp-oncology.2312-8852.vol-43-no-3.16604" @default.
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