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- W2094587443 abstract "Introduction: Breast surgery often results in physical deformities that significantly diminish patient's quality of life. A natural and aesthetically pleasing breast reconstruction can be achieved through autologous fat grafting and the success of this technique has largely been attributed to the regenerative properties of adipose-derived stem cells (ASCs) within fat graft. However, in the setting of resected breast cancer, the growth stimulating and angiogenic effects of ASCs pose a risk of increasing local recurrence rates. Although the safety of autologous fat grafting in the breast cancer population has yet to be determined, potential recurrence risk may be minimized through incorporating tumor-suppressing elements in the graft. This study aimed to determine if doxorubicin and paclitaxel could be used to inhibit breast cancer cells while maintaining the viability and functionality of ASCs in vitr o.Materials and methods: Human ASCs were isolated from non-diabetic female patients between 35 and 60 years of age (n = 3). BT-474 and MDA-MB-231 were obtained from ATCC. ASCs, ASCs undergoing adipogenic differentiation, and breast cancer cells were each exposed to a range of doxorubicin-HCl (0, 10, 30, 100, 300, 1000, 3000, or 10000nM) or paclitaxel (0, 0.1, 0.3, 1, 3, 10, 30, 100, or 300nM) concentrations. Proliferation, viability, and differentiation capacity were assessed with commercially available CyQuant, MTT, and AdipoRed assay kits, respectively.Results: Dose-dependent inhibition was observed for doxorubicin in ASCs and both breast cancer cell lines. The IC50 of doxorubicin on ASCs, BT-474, and MDA-MB-231 were 901.3, 656.5, and 333 nM, respectively. Dose-dependent inhibition for paclitaxel was only observed in BT-474 and MDA-MB-231 cells, with IC50 values of 1.809 and 3.477 nM, respectively. ASCs maintained greater than 80% viability over the range of paclitaxel concentrations tested and consequently and IC50 value could not be determined. ASCs differentiation into mature adipocytes was not inhibited by doxorubicin exposure.Discussion: In vitro cytotoxicity studies demonstrated greater doxorubicin and paclitaxel sensitivity in BT-474 and MDA-MB-231 than in ASCs. Furthermore, the presence of doxorubicin did not inhibit ASC differentiation into mature adipocytes. These findings suggest that incorporating chemotherapeutic drugs in fat grafts for breast reconstruction following primary breast cancer surgery may be a viable option for decreasing the risk of cancer recurrence.Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P4-16-03." @default.
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- W2094587443 date "2013-12-15" @default.
- W2094587443 modified "2023-09-27" @default.
- W2094587443 title "Abstract P4-16-03: Effect of doxorubicin and paclitaxel on adipose-derived stem cells and breast cancer cells: Can we incorporate chemotherapy into our reconstructive strategies?" @default.
- W2094587443 doi "https://doi.org/10.1158/0008-5472.sabcs13-p4-16-03" @default.
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