Introduction: Relapse 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.
Methods: The 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.
Results: We 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.
Conclusions: Our study indicates that signal transduction and mitochondrial ATP production are essential during adaptation of leukemic cells to vincristine, these processes represent potential therapeutic targets.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.bmhimx.2017.03.005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Determinants of Rotavirus Vaccine Acceptance in an Area of Southern Italy with Low Vaccination Coverage: A Case-Control Study by the Health Belief Model Questionnaire.
Vaccines (Basel)
January 2025
Department of Medicine and Surgery, University of Enna Kore, 94100 Enna, Italy.
Background/objectives: Rotavirus (RV) is the primary cause of gastroenteritis in children worldwide, contributing significantly to morbidity and mortality, particularly among children under five years of age. The introduction of Rotavirus vaccines (RVV) has markedly reduced RV-related childhood deaths, especially in Europe, where substantial reductions in hospitalizations and disease prevalence have been observed. Despite these advances, RVV uptake in Italy remains below the desired targets, with notable regional disparities.
View Article and Find Full Text PDFImaging Flow Cytometric Identification of Chromosomal Defects in Paediatric Acute Lymphoblastic Leukaemia.
Cells
January 2025
School of Biomedical Sciences, The University of Western Australia, Crawley, WA 6009, Australia.
Acute lymphoblastic leukaemia is the most common childhood malignancy that remains a leading cause of death in childhood. It may be characterised by multiple known recurrent genetic aberrations that inform prognosis, the most common being hyperdiploidy and t(12;21) . We aimed to assess the applicability of a new imaging flow cytometry methodology that incorporates cell morphology, immunophenotype, and fluorescence in situ hybridisation (FISH) to identify aneuploidy of chromosomes 4 and 21 and the translocation .
View Article and Find Full Text PDFNeutrophil-to-lymphocyte ratio as a predictor of short- and long-term complications in pediatric burns.
Ital J Pediatr
January 2025
Department of Pediatric Surgery, La Paz Children´s University Hospital, Madrid, Spain.
Background: Neutrophil-to-Lymphocyte Ratio (NLR) has been postulated as a useful inflammatory biomarker in the prediction of complications in different pediatric diseases. Our aim is to analyze the predictive value of NLR in the development of complications in burned children, both in the short-term (need for grafting) and in the long-term (need for surgery of the sequelae).
Methods: A retrospective study was performed on burned patients under 18-years admitted to our Burn Unit between 2015 and 2021.
Targeting LMO2-induced autocrine FLT3 signaling to overcome chemoresistance in early T-cell precursor acute lymphoblastic leukemia.
Leukemia
January 2025
Australian Centre for Blood Diseases (ACBD), School of Translational Medicine, Monash University, Melbourne, VIC, Australia.
Early T-cell Precursor Acute Lymphoblastic Leukemia (ETP-ALL) is an immature subtype of T-cell acute lymphoblastic leukemia (T-ALL) commonly show deregulation of the LMO2-LYL1 stem cell transcription factors, activating mutations of cytokine receptor signaling, and poor early response to intensive chemotherapy. Previously, studies of the Lmo2 transgenic mouse model of ETP-ALL identified a population of stem-like T-cell progenitors with long-term self-renewal capacity and intrinsic chemotherapy resistance linked to cellular quiescence. Here, analyses of Lmo2 transgenic mice, patient-derived xenografts, and single-cell RNA-sequencing data from primary ETP-ALL identified a rare subpopulation of leukemic stem cells expressing high levels of the cytokine receptor FLT3.
View Article and Find Full Text PDFLife-threatening spontaneous splenic rupture in congenital afibrinogenemia: Two case reports and systematic literature review.
J Forensic Leg Med
January 2025
Department of Legal Medicine, Teaching Hospital of Taher Sfar, 5100, Mahdia, Tunisia; Faculty of Medicine of Monastir, University of Monastir, Tunisia.
Background: Spontaneous splenic rupture is a rare life-threatening finding with a challenging diagnosis which is largely ignored in the literature. Hematological disorders such as afibrinogenemia are reported to cause bleeding disorders mostly cerebral hemorrhage. Despite being a life-threatening condition, data about spontaneous splenic rupture in patients with Afibrinogenemia remain scarce.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!