Project description:MicroRNA-sequencing of the bone marrow samples from Brazilian pediatric patients with B-cell acute lymphoblastic leukemia (B-ALL) and T-cell acute lymphoblastic leukemia (T-ALL).
Project description:Acute lymphoblastic leukemia (ALL) is the most common childhood cancer worldwide, with higher incidence and lower survival rates observed in the Mexican population. This study aimed to characterize the genome-wide DNA methylation landscape in a cohort of Mexican pediatric ALL patients. Bone marrow (BM) or peripheral blood (PB) samples were collected at diagnosis from 53 children under 17 years old with B-cell ALL, alongside BM samples from 5 pediatric non-ALL controls. DNA methylation profiling was performed using the Illumina Infinium MethylationEPIC v2.0 array. Data processing and identification of differentially methylated positions (DMPs) were conducted using the ChAMP package in R. This dataset provides a comprehensive epigenomic resource for investigating methylation-based biomarkers and dysregulated pathways in this understudied population.
Project description:This data set consists of pediatric acute lymphoblastic leukemia (ALL) primary bone marrow biopsies from the BC Children's Hospital BioBank, pediatric ALL cell lines, non-cancer bone marrow biopsies, and few ALL PDX. All files are DIA and searched by Spectronaut with a spectral library.
Project description:RNA was extracted from the diagnostic bone marrow specimens of 50 T-cell acute lymphoblastic leukemia pediatric patients and analysed by Affymetrix microarray to model gene classifiers predictive of clinical outcome
Project description:The development of a clinically relevant xenograft model of pediatric acute lymphoblastic leukemia, using a 4-drug treatment regimen designed to mimic pediatric remission induction therapy. Relapse and acquired drug resistance in T-cell acute lymphoblastic leukemia (T-ALL) remains a significant clinical problem. This study was designed to establish a preclinical model of resistance to induction therapy in childhood T-ALL to examine the emergence of drug resistance and identify novel therapies. We performed transcription profiling by array of human CD45-positive human lymphocytes from patients with acute pediatric lymphoblastic leukemia, and from xenografted NOD/SCID mice treated with vincristine, daunorubicin, dexamethasone and L-asparagine. Several different treatment regimes were used in this study (VLXD, VLXDR, VLXD2, VXL and VLXD2-ALL31) and are summarised in the protocols associated with this submission.
Project description:DS-ALL is a highly heterogeneous disease with predominance of an aberrant exp. of CRLF2 cooperating with mutated JAK2 Acute lymphoblastic pediatric leukemia specimens of Down's syndrome are examined for gene expression profiles and specific genetic aberrations. Gene expression profiling and specific genetic variation analysis identify novel pathways involved in DS-ALL pathogenesis.
Project description:The aim of this study was to investigate the transcriptome of 54 primary samples of pediatric patients diagnosed with T-cell acute lymphoblastic leukemia. Samples were collected before treatment. Sequencing libraries were obtained with Illumina TruSeq Stranded mRNA protocol, with modified conditions of RNA fragmentation (90°C for 2 minutes). All libraries were sequenced on Illumina NovaSeq6000 platform, in 2x150PE mode (paired end sequencing with 150 nt reads), with a coverage of 150M reads/sample.