Bruce K. Micales

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The Ezh2 protein endows the Polycomb PRC2 and PRC3 complexes with histone lysine methyltransferase (HKMT) activity that is associated with transcriptional repression. We report that Ezh2 expression was developmentally regulated in the myotome compartment of mouse somites and that its down-regulation coincided with activation of muscle gene expression and(More)
Members of the myocyte enhancer factor 2 (MEF2) gene family are expressed in a dynamic pattern during development of the CNS of pre- and postnatal mice. The four MEF2 genes, Mef2A, -B, -C, -D, encode transcription factors belonging to the MADS (MCM1-agamous-deficiens-serum response factor) superfamily of DNA binding proteins. MEF2 factors have previously(More)
Central nervous system (CNS) development involves neural patterning, neuronal and axonal migrations, and synapse formation. DSCAM, a chromosome 21 axon guidance molecule, is expressed by CNS neurons during development and throughout adult life. We now report that DSCAM and its chromosome 11 paralog DSCAML1 exhibit inverse ventral-dorsal expression patterns(More)
Jumonji (jmj) was cloned in a gene trap screen to identify and mutagenize genes important for heart development. To investigate the role of jmj in heart development, we generated mice homozygous for the jmj mutation. The jmj homozygous mouse embryos showed heart malformations, including ventricular septal defect, noncompaction of the ventricular wall,(More)
The cellular protooncogene, c-ski, is expressed in all cells of the developing mouse at low but detectable levels. In situ hybridization and Northern blot analyses reveal that some cells and tissues express this gene at higher levels at certain stages of embryonic and postnatal development. RT-PCR results indicate that alternative splicing of exon 2, known(More)
Overexpression of either v-ski, or the proto-oncogene, c-ski, in quail embryo fibroblasts induces the expression of myoD and myogenin, converting the cells to myoblasts capable of differentiating into skeletal myotubes. In transgenic mice, overexpression of ski also influences muscle development, but in this case it effects fully formed muscle, causing(More)
Down Syndrome (DS) is a major cause of mental retardation and is associated with characteristic well-defined although subtle brain abnormalities, many of which arise after birth, with particular defects in the cortex, hippocampus and cerebellum. The neural cell adhesion molecule DSCAM (Down syndrome cell adhesion molecule) maps to 21q22.2-->q22.3, a region(More)
Arenaviruses present an emerging health threat in agrarian areas of Africa and South America; however, the natural routes of arenaviral infections are not clearly understood. Our previous studies with lymphocytic choriomeningitis virus (LCMV), the prototype arenavirus, implicate oral and intragastric routes as natural routes of infection. Our studies raised(More)
To explore the compatibility of skeletal and cardiac programs of gene expression, transgenic mice that express a skeletal muscle myogenic regulator, bmyf5, in the heart were analyzed. These mice develop a severe cardiomyopathy and exhibit a significantly shorter life span than do their nontransgenic littermates. The transgene was expressed from day 7.5 post(More)
Leucine-rich repeat containing protein 10 (LRRC10) is a heart-specific factor whose function remains unknown. Examination of the intracellular location of the gene products is a critical step in determining the biological functions of the protein. Our expression analyses in mice indicate that LRRC10 is exclusively expressed from the precardiac region in(More)