New molecular markers of cancer had emerged with novel applications in cancer prevention and therapeutics, including for breast cancer of unknown causes, which has a high impact on the health of women worldwide. The purpose of this research was to determine protein and mRNA expression of synaptic vesicle 2 (SV2) isoforms A, B and C in breast cancer cell lines. Cultured cell lines MDA-MB-231, SKBR3, T47D were lysed and their protein and mRNA expression analyzed by real-time PCR and western blot technique, respectively. SV2A, B proteins were identified in non-tumor (MCF-10A) and tumor cell lines (MDA-MB-231 and T47D) while SV2C only was found in the T47D cell line. Furthermore, the genomic expression was consistent with protein expression for a such cell line, but in MDA-MB-231 there was no SV2B genomic expression, and the SV2C mRNA and protein were not found in the non tumoral cell line. These findings suggest a possible cellular transdifferentiation to neural character in breast cancer, of possible relevance to cancer development, and point to possible use of SV2 as molecular marker and a vehicle for cancer treatment with botulinum toxin.

Background: Procedures to remove adiposities and skin, such as dermolipectomy, can develop wounds that are difficult to heal by conventional therapies. Mesenchymal stem cells are indicated as potential candidates for regenerative therapy in wounds, due to their muitipotentiality, low immunogenicity, modulating capacity of inflammation and tissue modeling processes. Case report: Patient with dehiscent chronic ulcer secondary to dermolipectomy, who received cutaneous treatment with mesenchymal stem cells. The therapy induced scar formation and neovascularization, as well as the decrease of infiltrated leukocytes and proinflammatoty cytokines. Mesenchymal cells are proposed as an interesting alternative for the treatment of postoperative lesions.