Aaron Block

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Approximately 45% of adults with acute myeloid leukemia (AML) have normal cytogenetics and therefore lack structural abnormalities that can assist in the localization and characterization of molecular defects. The partial tandem duplication of the ALL1 (MLL) gene has been found in several such cases of AML, yet its frequency and clinical significance are(More)
Gains of a single chromosome are frequent cytogenic findings in human cancer, but no molecular rearrangement has been consistently associated with any trisomy. In acute myeloid leukemia (AML), trisomy 11 (+11) occurring as a sole abnormality is the third most common trisomy. We have shown that the ALL1 gene, located at 11q23, can be rearranged as a result(More)
The t(12;21)(p13;q22) translocation, fusing the ETV6 and AML1 genes, is the most frequent chromosomal translocation associated with pediatric B-cell precursor acute lymphoblastic leukemia. Although the genomic organization of the ETV6 gene and a breakpoint cluster region (bcr) in ETV6 intron 5 has been described, mapping of AML1 breakpoints has been(More)
Down syndrome (DS) is caused by an extra copy of human chromosome 21 (Hsa21). Although it is the most common genetic cause of intellectual disability (ID), there are, as yet, no effective pharmacotherapies. The Ts65Dn mouse model of DS is trisomic for orthologs of ∼55% of Hsa21 classical protein coding genes. These mice display many features relevant to(More)
Analysis of the molecular basis of learning and memory has revealed details of the roles played by many genes and the proteins they encode. Because most individual studies focus on a small number of proteins, many complexities of the relationships among proteins and their dynamic responses to stimulation are not known. We have used the technique of reverse(More)
While many sex differences in structure and function of the mammalian brain have been described, the molecular correlates of these differences are not broadly known. Also unknown is how sex differences at the protein level are perturbed by mutations that lead to intellectual disability (ID). Down syndrome (DS) is the most common genetic cause of ID and is(More)
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