Project description:INCLUDE: Mechanisms, Genomic Risk Stratification and Precision Intervention for Acute Myeloid Leukemia in Children with Down syndrome (ML-DS)

| PRJNA854740 | ENA

Risk-Stratified Therapy for Pediatric Acute Myeloid Leukemia.

Project description:Acute Myeloid Leukemia (AML) is the second most common type of leukemia in children. Recent advances in high-resolution genomic profiling techniques have uncovered the mutational landscape of pediatric AML as distinct from adult AML. Overall survival rates of children with AML have dramatically improved in the past 40 years, currently reaching 70% to 80% in developed countries. This was accomplished by the intensification of conventional chemotherapy, improvement in risk stratification using leukemia-specific cytogenetics/molecular genetics and measurable residual disease, appropriate use of allogeneic hematopoietic stem cell transplantation, and improvement in supportive care. However, the principle therapeutic approach for pediatric AML has not changed substantially for decades and improvement in event-free survival is rather modest. Further refinements in risk stratification and the introduction of emerging novel therapies to contemporary therapy, through international collaboration, would be key solutions for further improvements in outcomes.

| S-EPMC10452723 | biostudies-literature

RNA sequencing data from Myeloid Leukaemia of Down Syndrome (ML-DS)

Project description:RNA sequencing data from Myeloid Leukaemia of Down Syndrome (ML-DS)

| PRJEB32403 | ENA

Landscape of gene mutations in Down syndrome-related myeloid disorders

Project description:To identify the spectrum of gene mutations in Down syndrome-related myeloid disorders, whole genome sequencing of 4 trio samples from TAM/AMKL/complete remission (CR) phases and whole exome sequencing of 15 TAM and 14 DS-AMKL samples were performed.

| EGAS00001000546 | EGA

MicroRNA therapeutics for stratified treatment of Schizophrenia

Project description:Schizophrenia (SZ) is a devastating psychiatric illness affecting 1% of the world population. In addition to genetic predisposition, environmental factors contribute to the risk for developing SZ. Such genome environment interactions frequently activate epigenetic and epitranscriptomic mechansims. There are emerging evidence that genetic and environmental risk factors merge at the level of microRNA expression, which are discussed as biomarker and therapeutic target in various disorders including neuropsychiatric diseases. In this study we analyzed the blood microRNAome of healthy individuals and SZ patients via small RNA sequencing. By combining these data with a corresponding analysis of post-mortem human brain tissue, we identify one candidate microRNA that is down-regulated in patients. Moreover, its expression is significantly correlated to disease phenotypes. Manipulation of this microRNAs in mouse prefrontal cortex causes schizophrenia-like phenotypes. Functional analysis revealed the cellular processes affected by this microRNA and allowed us to develop an arsenal of RNA-based therapeutic approaches that are able to ameliorate molecular disease phenotypes in mouse and human-based cellular systems as well as the behavioral phenotypes. In conclusion, we identify a novel microRNA as target for stratified RNA-therapeutics in schizophrenia.

2024-03-26 | GSE224142 | GEO

Trib1 promotes the development of acute myeloid leukemia in the Ts1Cje Down syndrome model mouse

Project description:Down syndrome (DS) is caused by trisomy of chromosome 21 and it predisposes to hematological disorders such as transient myeloproliferative disorder and acute megakaryocytic leukemia. Our previous study identified a gain-of-function mutation of TRIB1 encoding a pseudokinase that suppresses C/EBP and enhances MEK/ERK signaling. In this study, we aimed to examine whether Trib1 expression cooperates with trisomy 21 in the development of leukemia. The wild type or R107L mutant Trib1 was retrovirally introduced into bone marrow cells derived from the Ts1Cje Down syndrome model mice or C57Bl6/J mice. Trib1 expression in hematopoietic cells of Ts1Cje mice accelerated the onset of AML development compared with that in wild type mice. Gene expression analysis showed up-regulation of Hox downstream genes and down-regulation of genes for the myeloid differentiation program and C/EBP targets. These results suggest that Trib1-mediated signaling plays an important role in promoting leukemogenesis in Down syndrome. We used microarrays to detail the global program of gene expression in mouse AML

2022-03-29 | GSE168531 | GEO

Down syndrome SNPs - samples

Project description:Down syndrome SNP genotyping data

| EGAD00010000464 | EGA