"Intracellular Signaling Peptides and Proteins"

Expanding the Paracrine Hypothesis of Stem Cell-Mediated Repair in the Heart: When the Unconventional Becomes Conventional.

Recent interest in mechanisms of stem cell-mediated repair in the heart have spawned the ``paracrine hypothesis'', which posits that stem cells release beneficial substances that improve regeneration and function of the injured and diseased …

Coordination of growth and endoplasmic reticulum stress signaling by regulator of calcineurin 1 (RCAN1), a novel ATF6-inducible gene.

Exposing cells to conditions that modulate growth can impair endoplasmic reticulum (ER) protein folding, leading to ER stress and activation of the transcription factor, ATF6. ATF6 binds to ER stress response elements in target genes, inducing …

Factor associated with neutral sphingomyelinase activation and its role in cardiac cell death.

Generation of proapoptotic sphingolipids by neutral sphingomyelinase activation is an early response to hypoxia/reoxygenation (HR) in cardiomyocytes. Factor associated with neutral sphingomyelinase activation (FAN) mediates activation of …

p38 MAPK regulates group IIa phospholipase A2 expression in interleukin-1beta -stimulated rat neonatal cardiomyocytes.

Group IIa phospholipase A(2) (GIIa PLA(2)) is released by some cells in response to interleukin-1beta. The purpose of this study was to determine whether interleukin-1beta would stimulate the synthesis and release of GIIa PLA(2) from cardiomyocytes, …

alpha B-crystallin gene induction and phosphorylation by MKK6-activated p38. A potential role for alpha B-crystallin as a target of the p38 branch of the cardiac stress response.

The MAPK kinase MKK6 selectively stimulates p38 MAPK and confers protection against stress-induced apoptosis in cardiac myocytes. However, the events lying downstream of p38 that mediate this protection are unknown. The small heat shock protein, …

The Rho effector, PKN, regulates ANF gene transcription in cardiomyocytes through a serum response element.

The low-molecular-weight GTP-binding protein RhoA mediates hypertrophic growth and atrial natriuretic factor (ANF) gene expression in neonatal rat ventricular myocytes. Neither the effector nor the promoter elements through which Rho exerts its …