Abstract
Abstract Background Adipose-derived stem cells (ADSCs) are a promising cell source for adipose tissue engineering. Currently, novel breast reconstruction techniques using ADSCs are actively being explored. Systemic chemo- & hormonal therapy may impede tissue regeneration in breast cancer patients. However, the effect of hormonal therapy on ADSCs and their regenerative capabilities is poorly understood. Aims The current study aims to analyse the effect of Afimoxifene, an active metabolite of Tamoxifen, on proliferation and viability of ADSCs in vitro Method Lipoaspirates or adipose tissue were obtained with informed consent from breast cancer patients and healthy controls. The isolated ADSCs were subjected to single or multiple dose(s) of Z-4-Hydroxytamoxifen (12.5nM, 25nM, 50nM, 100nM and 1μM) and, analyzed on days 1, 3 and 5, using CellTitre 96 ® AQueous Cell proliferation assay. T47D and MDA-MB-231 cell lines were used as positive and negative controls, respectively. Result ADSCs were obtained from a total of 3 patients. ADSCs were isolated from a cancer patient with/without active disease at the time of sample procurement and healthy subjects opting for elective cosmetic procedures. Morphology, CFU assay and adipogenic differentiation assay were used to validate stem cell population. Afimoxifene demonstrated no statistically significant reduction in the viability or proliferation of the ADSCs, irrespective of the dose- or time-dependent exposure or cancer status (p >0.05). Conclusion Afimoxifene has no deleterious effect on viability or proliferation of human ADSCs up to 1μM concentration. Key words Adipose-derived stem cells, Afimoxifene, Breast reconstruction, Hormone therapy, Tamoxifen. Take-home message Afimoxifene has no deleterious effect on viability or proliferation of human ADSCs up to 1μM concentration
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