Project description:CTCF ChIP-seq of 39 primary samples derived from human acute leukemias, namely AML, T-ALL and mixed myeloid/lymphoid leukemias with CpG Island Methylator Phenotype (CIMP). Due to patient confidentiality considerations, the raw data files for this dataset have been deposited to the EGA controlled-access archive under the accession numbers EGAS00001007094 (study); EGAD00001011059 (dataset).
Project description:The Fanconi anemia (FA) pathway is a network of proteins critical to the preservation of genomic integrity and the prevention of cancer. FA proteins safeguard the genome by regulating the cell cycle and facilitating error-free repair of DNA damage. Bi-allelic mutation of genes encoding FA pathway proteins causes the cancer predisposition syndrome Fanconi anemia (FA), which is associated with a high incidence of acute myeloid leukemia (AML). Individuals with mono-allelic mutation of a subset FA genes do not develop FA but suffer increased lifetime risk of solid and hematological malignancies. Within the general population, approximately 14% of sporadic AMLs harbor damaging mutations within the FA pathway. Our previous work demonstrated that inhibition of the mitotic kinase PLK1 induced synthetic lethality in cells deficient for FANCA, the gene most frequently lost in FA. This finding corroborates work from others that have identified synthetic lethal interactions between PLK1 and additional FA genes (FANCG, BRCA1, and BRCA2). Together, these findings suggest that FA pathway mutations may serve as biomarkers for sensitivity to PLK1 inhibitors, which have demonstrated therapeutic efficacy in an undefined subset of AML patients. Here, HL60 AML cells were generated with shControl or shFANCA and treated with 10nM volasertib for 24 h prior to kinome profiling.
Project description:The Fanconi anemia (FA) pathway is a network of proteins critical to the preservation of genomic integrity and the prevention of cancer. FA proteins safeguard the genome by regulating the cell cycle and facilitating error-free repair of DNA damage. Bi-allelic mutation of genes encoding FA pathway proteins causes the cancer predisposition syndrome Fanconi anemia (FA), which is associated with a high incidence of acute myeloid leukemia (AML). Individuals with mono-allelic mutation of a subset FA genes do not develop FA but suffer increased lifetime risk of solid and hematological malignancies. Within the general population, approximately 14% of sporadic AMLs harbor damaging mutations within the FA pathway. Our previous work demonstrated that inhibition of the mitotic kinase PLK1 induced synthetic lethality in cells deficient for FANCA, the gene most frequently lost in FA. This finding corroborates work from others that have identified synthetic lethal interactions between PLK1 and additional FA genes (FANCG, BRCA1, and BRCA2). Together, these findings suggest that FA pathway mutations may serve as biomarkers for sensitivity to PLK1 inhibitors, which have demonstrated therapeutic efficacy in an undefined subset of AML patients. Here, THP1 AML cells were generated with shControl or shFANCA and treated with 10nM volasertib for 24 h prior to kinome profiling.
Project description:Fanconi anemia (FA) is a rare inherited disease complicated by aplastic anemia. There is evidence that hematopoietic stem cells have lost self replicative capacity and undergo apoptosis when exposed to inhibitory cytokines including interferon gamma and tumor necrosis factor-alpha. We used gene expression microarrays to identify transcriptomal differences between bone marrow cells from normal volunteers and from children and adults with Fanconi anemia Experiment Overall Design: Fanconi anemia patients were identified using mitomycin C and/or diepoxybutane chromosomal breakage analysis. Eleven normal volunteers and 21 FA patients were studied. All FA patients with cytogenetic evidence of clonal evolution were excluded. All FA patients with acute leukemia were excluded. RNA was prepared from freshly obtained low density mononuclear cell fractions.
Project description:H3K27ac ChIP-seq of 79 primary samples derived from human acute leukemias, namely AML, T-ALL and mixed myeloid/lymphoid leukemias with CpG Island Methylator Phenotype (CIMP). In addition, 4 samples derived from CD34+ cord blood cells of healthy donors were included. Due to patient confidentiality considerations, the raw data files for this dataset have been deposited to the EGA controlled-access archive under the accession numbers EGAS00001007094 (study); EGAD00001011060 (dataset).
Project description:Fanconi anemia (FA) is a rare inherited disease complicated by aplastic anemia. There is evidence that hematopoietic stem cells have lost self replicative capacity and undergo apoptosis when exposed to inhibitory cytokines including interferon gamma and tumor necrosis factor-alpha. We used gene expression microarrays to identify transcriptomal differences between bone marrow cells from normal volunteers and from children and adults with Fanconi anemia
Project description:This study was to compare gene expression profiles of human AMLs that either carry or lack potentially deleterious variants in genes of the Fanconi Anemia-Homologous Recombination DNA repair network” . Variants were identified by whole exome sequencing of the relevant genes. In total, 145 AML Diagnosis Samples were arrayed with no duplicates. CD34+ cells were used as normal controls. CML and normal Mono-nuclear cells (MNC) samples were not used for analysis. Adelaide Samples were sourced from the South Australian Cancer Research Biobank, ALLG Samples were sourced from the Australian Leukaemia an Lymphoma Group
Project description:Fanconi anemia is a rare inherited hematological disorder which commonly presents with bone marrow failure, developmental abnormalities and susceptibility to cancer with high rates of prevalence in ethnic populations. The objective of this study was to identify potential genes that aid in the progression of the disease or produce its principal symptoms and to hypothesize enabling roles for certain genes that are not part of the central molecular machinery causing the disease. A total of 2 Fanconi anemia samples were collected from patients who displayed characteristic FA features. All of them gave positive results for the DNA breakage test after mitomycin C treatment. Samples were referred by Dr. Sheila Mohan of REFAIN (Registry for Fanconi anemia in India). Whole genome microarray analysis of peripheral blood from 2 patient samples and one normal individual. Sequential analysis of microarray data was carried out using gene ontology and pathway analysis to identify candidate genes.
Project description:Fanconi Anemia (FA) is an inherited disorder of DNA-repair caused by mutation in one of 20+ interrelated genes that repair intra-strand DNA crosslinks and rescue collapsed or stalled replication forks. The most common hematologic abnormality in FA is anemia, but progression to bone marrow failure (BMF), clonal hematopoiesis, or acute myeloid leukemia (AML) may also occur. In prior studies, we found that Fanconi DNA-repair is required for successful emergency granulopoiesis; the process for rapid neutrophil production during the innate immune response. Specifically, Fancc-/- mice did not develop neutrophilia in response to emergency granulopoiesis stimuli, but instead exhibited apoptosis of bone marrow hematopoietic stem cells (HSCs) and differentiating neutrophils. Repeated emergency granulopoiesis challenges induced BMF in most Fancc-/- mice, with AML in survivors. In contrast, we found equivalent emergency granulopoiesis-induced neutrophilia in Fancc-/-Tp53+/- mice and wild type (WT) mice, without BMF in either. Since bone marrow neutrophil accumulation triggers termination of emergency granulopoiesis, we hypothesize neutrophilia protects Fancc-/-Tp53+/- bone marrow from the stress of sustained inflammatory physiology, as experienced by Fancc-/- mice.