Class I(A) PI3Kinase regulatory subunit, p85α, mediates mast cell development through regulation of growth and survival related genes.

ABSTRACT: Stem cell factor (SCF) mediated KIT receptor activation plays a pivotal role in mast cell growth, maturation and survival. However, the signaling events downstream from KIT are poorly understood. Mast cells express multiple regulatory subunits of class 1(A) PI3Kinase (PI3K) including p85α, p85β, p50α, and p55α. While it is known that PI3K plays an essential role in mast cells; the precise mechanism by which these regulatory subunits impact specific mast cell functions including growth, survival and cycling are not known. We show that loss of p85α impairs the growth, survival and cycling of mast cell progenitors (MCp). To delineate the molecular mechanism (s) by which p85α regulates mast cell growth, survival and cycling, we performed microarray analyses to compare the gene expression profi

SUBMITTER: Krishnan S 

PROVIDER: S-EPMC3251560 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature