TY - JOUR T1 - Proteomic changes in a childhood acute lymphoblastic leukemia cell line during the adaptation to vincristine JO - Boletín Médico del Hospital Infantil de México T2 - AU - Guzmán-Ortiz,Ana Laura AU - Aparicio-Ozores,Gerardo AU - Valle-Rios,Ricardo AU - Medina-Contreras,Oscar AU - Patiño-López,Genaro AU - Quezada,Héctor SN - 16651146 M3 - 10.1016/j.bmhimx.2017.03.005 DO - 10.1016/j.bmhimx.2017.03.005 UR - https://www.elsevier.es/es-revista-boletin-medico-del-hospital-infantil-401-articulo-proteomic-changes-in-childhood-acute-S1665114617300473 AB - IntroductionRelapse occurs in approximately 20% of Mexican patients with childhood acute lymphoblastic leukemia (ALL). In this group, chemoresistance may be one of the biggest challenges. An overview of complex cellular processes like drug tolerance can be achieved with proteomic studies. MethodsThe B-lineage pediatric ALL cell line CCRF-SB was gradually exposed to the chemotherapeutic vincristine until proliferation was observed at 6nM, control cells were cultured in the absence of vincristine. The proteome from each group was analyzed by nanoHPLC coupled to an ESI-ion trap mass spectrometer. The identified proteins were grouped into overrepresented functional categories with the PANTHER classification system. ResultsWe found 135 proteins exclusively expressed in the presence of vincristine. The most represented functional categories were: Toll receptor signaling pathway, Ras Pathway, B and T cell activation, CCKR signaling map, cytokine-mediated signaling pathway, and oxidative phosphorylation. ConclusionsOur study indicates that signal transduction and mitochondrial ATP production are essential during adaptation of leukemic cells to vincristine, these processes represent potential therapeutic targets. ER -