Timothy J Ley

..A variety of factors were thought to contribute to this problem, including increasing indebtedness of medical school graduates caused by rapidly rising medical school tuition costs...

..To assure physiologic relevance, PML-RARalpha functions should be evaluated in neutrophil elastase-expressing early myeloid cells...

..This strategy represents a viable approach for the detection of potentially relevant, nonrandom mutations in primary human cancer cell genomes...

..Taken together, these findings suggest that granzyme C is activated with persistent antigenic stimulation, providing nonredundant backup protection for the host when granzyme B fails...

..1 through a deletional mechanism, plus down-regulation of the residual allele caused by PR expression, may synergize to expand the pool of myeloid progenitors that are susceptible to transformation, increasing the penetrance of APL...

..Our study establishes whole-genome sequencing as an unbiased method for discovering cancer-initiating mutations in previously unidentified genes that may respond to targeted therapies...

..Since NE is maximally produced in promyelocytes, this protease may play a role in APL pathogenesis by facilitating the leukemogenic potential of PML-RARalpha...

..The genetic changes that underlie progression from the myelodysplastic syndromes to secondary AML are not well understood...

..Granzyme B and perforin are therefore relevant for Treg cell-mediated suppression of tumor clearance in vivo...

..These results suggest that the retained PGK-neo cassette in the GzmB gene causes a knockdown of GzmC and F expression, and also suggest that these granzymes are relevant for the function of cytotoxic lymphocytes in vitro and in vivo...

....

..The two models exhibited distinct gene expression profiles, suggesting that the dominant molecular signatures of murine acute promyelocytic leukemia can be influenced by several independent progression events...

..Although the explanation for this result is not yet clear, one hypothesis suggests that very low levels of PML-RARalpha expression in early myeloid cells may be optimal for the development of APL in mice...

..Cells from the founding clone can acquire additional cooperating mutations, yielding subclones that can contribute to disease progression and/or relapse...

..Taken together, these findings suggest that targeting specific T(reg) cell-suppressive mechanisms, such as granzyme B, may be therapeutically beneficial for segregating GVHD and graft-versus-tumor immune responses...

..Thus, the immune environment created by latent herpesvirus infection provides a mechanism whereby host NK-cell function is enhanced in vivo...

..The differential mutation frequencies and structural variation patterns in metastasis and xenograft compared with the primary tumour indicate that secondary tumours may arise from a minority of cells within the primary tumour...

..Together, these effects appear to increase the leukemogenicity of NE-resistant PR, contrary to our previous prediction. We conclude that NE deficiency may reduce APL penetrance via indirect mechanisms that are still NE dependent...

..These studies suggest that the genetic events that lead to APL progression may converge on common pathways that are important for leukemia pathogenesis...

..Despite this fact, there remains a dearth of available software tools designed to compare sequences in pairs of samples and identify sites that are likely to be unique to one sample...

..These data demonstrate that AML relapse is associated with the addition of new mutations and clonal evolution, which is shaped, in part, by the chemotherapy that the patients receive to establish and maintain remissions...

..38-compared with 11 of 11 for mice coexpressing PML-RARalpha and bcr-3 RARalpha-PML). The bcr-1 and bcr-3 isoforms of RARalpha-PML, therefore, have different biological activities that may be relevant for the pathogenesis of murine APL...

..Whole-genome sequencing is becoming increasingly available for research purposes, but it has not yet been routinely used for clinical diagnosis...

..Additional studies will be required to define the roles that these somatic and germline TK gene variants play in AML pathogenesis...

..The genetic alterations responsible for an adverse outcome in most patients with acute myeloid leukemia (AML) are unknown...

..These findings have implications for the development and therapeutic use of cells that are reprogrammed by any method...

..These data show that Rara haploinsufficiency (like Pml haploinsufficiency and RARA-PML) can cooperate with PML-RARA to influence the pathogenesis of APL in mice, but that PML-RARA is the t(15;17) disease-initiating mutation...

..This cytotoxicity is dependent on CD18 adhesive interactions but is independent of Fas/FasL. Our findings suggest that the perforin/granzyme pathway is one of the mechanisms that Treg cells can use to control immune responses...

..Improved understanding of genetic risk factors should lead to tailored treatment regimens that reduce risk for patients predisposed to t-AML...

..At a FPR of <10%, the algorithm can detect CNVs with five probes on the 385K platform and three on the 2.1M and 3.1M platforms, resulting in effective resolutions of 24 kb, 2-5 kb and 1 kb, respectively...

..These data suggest that resting murine NK cells are minimally cytotoxic because of a block in perforin and granzyme B mRNA translation that is released by NK cell activation...

..Thus, the sequenced NK cell miRNA transcriptome provides a valuable framework for further elucidation of miRNA expression and function in NK cell biology...

..Mutant U2AF1 promotes enhanced splicing and exon skipping in reporter assays in vitro. This previously unidentified, recurrent mutation in U2AF1 implicates altered pre-mRNA splicing as a potential mechanism for MDS pathogenesis...

..These studies provide a proof-of-principle for directing therapy to the critical tethers that promote AML-niche interactions...

..In conclusion, whole genome sequencing of mouse cancer genomes can provide an unbiased and comprehensive approach for discovering functionally relevant mutations that are also present in human leukemias...

....

..Together, these data demonstrate a critical and dose-dependent role for Mcl1 in AML pathogenesis in mice and suggest that MCL1 may be a promising therapeutic target in patients with de novo AML...

....

....

..The full complement of DNA mutations that are responsible for the pathogenesis of acute myeloid leukemia (AML) is not yet known...

..Although it is possible that Hop may be cleaved by GzmB as an "innocent bystander" during the induction of apoptosis, it may also act to facilitate apoptosis in concert with other GzmB substrates...

..We propose an integrated approach for mammalian genetic network construction by combining the analysis of gene expression profiling data and the identification of TF binding sites...

..5 to E11.5) than YB-1-deficient embryos, suggesting that MSY4 indeed shares critical cellular functions with YB-1 in the embryonic tissues where they are coexpressed...

..This mouse model provides a platform for more accurately dissecting the early events in APL pathogenesis...

..This is the first report to demonstrate somatic JAK1 mutations in AML and suggests that JAK1 mutations may function as disease-modifying mutations in AML pathogenesis...

..Prospective clinical trials based on these findings will require comprehensive genome sequencing...

..However, in many cases of suspected cancer susceptibility, the family history is unclear and genetic testing of common cancer susceptibility genes is unrevealing...

..These data support the hypothesis that mutations of CSF3R may provide the "activated tyrosine kinase signal" that is thought to be important for leukemogenesis...

....

..The requirement for specific granzymes differs for early versus late forms of latent infection. These data indicate that different granzymes play important and distinct roles in regulating latent gammaherpesvirus infection...

..This approach may serve as an important discovery tool for other immunologic proteases...

....

..Annotation of CNVs in the mouse genome combined with sequence-based analysis provides an important resource that will help define the genetic basis of complex traits...

....

..BreakDancer sensitively and accurately detected indels ranging from 10 base pairs to 1 megabase pair that are difficult to detect via a single conventional approach...

..Our results demonstrate discordant expression of granzymes A and B in human lymphocyte subsets and T regulatory cells, which suggests that different granzymes may play unique roles in immune system responses and regulation...

..host disease, but oversuppression of these pathways may also lead to increased viral susceptibility and/or decreased tumor cell killing...

....

..These data suggest that YB-1 normally represses the transcription of CDK inhibitors, making it an important component of the cellular stress response signaling pathway...

..quot;Protease proteomics" may therefore represent an important tool for the discovery of the native substrates of a variety of proteases...

..Although the functions of these orphan granzymes have yet to be fully established, initial data suggests their importance in both immune and nonimmune cells...

..These results suggest that granzyme C rapidly induces target cell death by attacking nuclear and mitochondrial targets and that these targets are distinct from those used by granzyme B to cause classical apoptosis...

..The leukemia is transplantable to secondary recipients and is ATRA responsive. These observations document cooperation between PML/RARalpha and FLT3-ITD in development of the murine APL phenotype...

..These studies should allow us to determine whether homologous recombination can be rationally developed as a method for correcting mutations in the P-globin locus within primary hematopoietic progenitor cells. ..

..abstract_text> ..