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- W1821185514 abstract "Fat grafting has become popular for repair of postsurgical/postradiation defects after head/neck cancers resection. Fat graft supplementation with adipose tissue-derived stromal/stem cells (ASCs) is proposed to improve graft viability/efficacy, although the impact of ASCs on head/neck cancer cells is unknown.To determine whether ASCs affect growth, migration, and metastasis of human head/neck cancer.Human Cal-27 and SCC-4 head/neck cancer cells were co-cultured human ASCs, or treated with ASC conditioned medium (CM), and cancer cell growth/migration was assessed by MTT, cell count, and scratch/wound healing assays in vitro. Co-injection of 3 × 10(6) Cal-27/green fluorescent protein (GFP) cells and ASCs into the flank of NUDE mice assessed ASC effect on tumor growth/morphology. Quantitation of human chromosome 17 DNA in mouse organs assessed ASC effects on micrometastasis. Primary tumors were evaluated for markers of epithelial-to-mesenchymal transition, matrix metalloproteinases, and angiogenesis by immunohistochemistry.Co-culture of Cal-27 or SCC-4 cells with ASCs from 2 different donors or ASC CM had no effect on cell growth in vitro. However, ASC CM stimulated Cal-27 and SCC-4 migration. Co-injection of ASCs from 2 different donors with Cal-27 cells did not affect tumor volume at 6 weeks, but increased Cal-27 micrometastasis to the brain. Evaluation of tumors sections from 1 ASC donor co-injection revealed that ASCs were viable and well integrated with Cal-27/GFP cells. These tumors exhibited increased MMP2, MMP9, IL-8, and microvessel density.Human ASCs did not alter growth of human head/neck cancer cells or tumor xenografts, but stimulated migration and early micrometastasis to mouse brain." @default.
- W1821185514 created "2016-06-24" @default.
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- W1821185514 date "2015-06-10" @default.
- W1821185514 modified "2023-09-30" @default.
- W1821185514 title "Human Adipose Tissue-Derived Stromal/Stem Cells Promote Migration and Early Metastasis of Head and Neck Cancer Xenografts" @default.
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- W1821185514 doi "https://doi.org/10.1093/asj/sjv090" @default.
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