The effects of Stem Cell-Conditioned Media on Malignancy Behavior of Breast Cancer Cells in Vitro.

Breast cancer represents the most frequently diagnosed form of cancer among women on a global scale. In recent years, there has been a notable increase in interest among researchers in exploring alternative therapeutic methods, including stem cell therapy. The objective of this study was to examine the impact of adipose-derived mesenchymal stem cell-conditioned media (AD-MSCs-CM) on apoptosis induction and migration inhibition of breast cancer cells (MDA-MB-231) in vitro. In this study, malignant breast cancer cells (MDA-MB-231) and adipose-derived mesenchymal stem cells (AD-MSCs) were cultured separately in DMEM/F12/FBS (15%) culture media under standard conditions. Subsequently, the conditioned media derived from AD-MSCs was introduced to the MDA-MB-231 cells. Following a 24- and 48-hour exposure period, the expression levels of CASP3, KRAS, and MMP9 were evaluated using a quantitative reverse transcription polymerase chain reaction (qRT-PCR) assay. Furthermore, the proliferation and migration abilities of the cancer cells were evaluated using MTT and wound healing assays, respectively. Furthermore, the protein expression of Caspase-3, K-RAS, and MMP-9 was examined using a western blot assay. It is noteworthy that the expression levels of the MMP9 and KRAS genes were significantly reduced following treatment with AD-MSCs-CM in MDA-MB-231 cells. Furthermore, the CASP3 gene expression level was found to have increased significantly in the treated groups. Additionally, the proliferation of MDA-MB-231 cells treated with AD-MSCs-CM was markedly diminished by MTT and wound healing assays. Moreover, the AD-MSCs-CM was observed to induce caspase-3 activation and reduce the protein expression of K-RAS and MMP-9. The results of this study indicate that AD-MSCs-CM may exert an influence on the apoptosis, proliferation, and migration of breast cancer cells. Consequently, it could be proposed as a promising therapeutic strategy for the suppression of breast cancer. However, further testing and research are required to validate these findings and to ascertain the full potential of this approach.