We have identified acid sphingomyelinase (ASM) as an important player in the early and late anti-Salmonella activity of macrophages. A functional ASM participated in the killing activity of macrophages against wild-type Salmonella enterica serovar Typhimurium. The role of ASM in early macrophage killing of Salmonella appears to be linked to an active NADPH phagocyte oxidase enzymatic complex, s...

Receptor tyrosine kinases (RTKs) are embedded in the lipid bilayer of the plasma membrane, but the specific roles of various lipids in cell signaling remain largely uncharacterized. We have previously found that acid sphingomyelinase (ASM; also known as SMPD1) regulates the conserved DAF-2 (the ortholog IGF-1R in mammals) RTK signaling pathway in Caenorhabditis elegans How ASM and its catalytic...

Development and regeneration of the nervous system requires the precise formation of axons and dendrites. Kinases and phosphatases are pervasive regulators of cellular function and have been implicated in controlling axodendritic development and regeneration. We undertook a gain-of-function analysis to determine the functions of kinases and phosphatases in the regulation of neuron morphology. O...

In this study we have performed genome-wide analysis to identify Nkx2-5 binding regions using mid-gestation mouse hearts to gain insight into the molecular mechanisms by which Nkx2-5 contributes to the correct development of the heart. Nkx2-5 and SRF invivo binding sites were mapped using ChIPchip assays and analysis of the ChIP-chip data has identified 600 and 858 SRF and Nkx2-5-binding sites,...

In this study we have performed genome-wide analysis to identify Nkx2-5 binding regions using mid-gestation mouse hearts to gain insight into the molecular mechanisms by which Nkx2-5 contributes to the correct development of the heart. Nkx2-5 and SRF invivo binding sites were mapped using ChIPchip assays and analysis of the ChIP-chip data has identified 600 and 858 SRF and Nkx2-5-binding sites,...