Breast Cancer Tissue Explants: An Approach to Develop Personalized Therapy in Public Health Services.
Pilar Carranza-RosalesDaniel Valencia-MercadoOlga Esquivel-HernándezManuel Ismael González-GeronizJosé Inocente Bañuelos-GarcíaAna Lilia Castruita-ÁvilaMario Alberto Sánchez-PrietoEzequiel Viveros-ValdezJavier Morán-MartínezIsaías Balderas-RenteríaNancy Elena Guzmán-DelgadoIrma Edith Carranza-TorresPublished in: Journal of personalized medicine (2023)
Breast cancer is one of the main causes of death worldwide. Lately, there is great interest in developing methods that assess individual sensitivity and/or resistance of tumors to antineoplastics to provide personalized therapy for patients. In this study we used organotypic culture of human breast tumor slices to predict the experimental effect of antineoplastics on the viability of tumoral tissue. Samples of breast tumor were taken from 27 patients with clinically advanced breast cancer; slices were obtained and incubated separately for 48 h with paclitaxel, docetaxel, epirubicin, 5-fluorouracil, cyclophosphamide, and cell culture media (control). We determined an experimental tumor sensitivity/resistance (S/R) profile by evaluating tissue viability using the Alamar Blue ® metabolic test, and by structural viability (histopathological analyses, necrosis, and inflammation). These parameters were related to immunohistochemical expression of the estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2. The predominant histological type found was infiltrating ductal carcinoma (85.2%), followed by lobular carcinoma (7.4%) and mixed carcinoma (7.4%). Experimental drug resistance was related to positive hormone receptor status in 83% of samples treated with cyclophosphamide ( p = 0.027). Results suggest that the tumor S/R profile can help to predict personalized therapy or optimize chemotherapeutic treatments in breast cancer.
Keyphrases
- estrogen receptor
- epidermal growth factor receptor
- endothelial cells
- low dose
- end stage renal disease
- newly diagnosed
- healthcare
- poor prognosis
- high dose
- chronic kidney disease
- ejection fraction
- oxidative stress
- stem cells
- induced pluripotent stem cells
- tyrosine kinase
- mental health
- binding protein
- prognostic factors
- cell therapy
- long non coding rna
- drug induced
- mesenchymal stem cells
- pluripotent stem cells
- adverse drug