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4916 results sorted by

Transforming growth factor-beta-mediated chondrogenesis of human mesenchymal progenitor cells involves N-cadherin and mitogen-activated protein kinase and Wnt signaling cross-talk

The multilineage differentiation potential of adult tissue-derived mesenchymal progenitor cells (MPCs), such as those from bone marrow and trabecular bone, makes them a useful model to investigate mechanisms regulating tissue development and...
Authors: Tuli R, Tuli S, Nandi S, Huang X, Manner PA, Hozack WJ, Danielson KG, Hall DJ and Tuan RS

Mammalian Fat1 cadherin regulates actin dynamics and cell-cell contact

Fat cadherins form a distinct subfamily of the cadherin gene superfamily, and are featured by their unusually large extracellular domain. In this work, we investigated the function of a mammalian Fat cadherin. Fat1 was localized at filopodial tips,...
Authors: Tanoue T and Takeichi M

Differential localization and function of ADP-ribosylation factor-6 in anergic human T cells: a potential marker for their identification

Anergy is a state of immunologic tolerance in which T cells are viable but incapable of responding to antigenic stimulation. Recent data indicate that anergic cells have a distinct gene expression program that determines their unique function. In...
Authors: Tzachanis D, Appleman LJ, van Puijenbroek AAFL, Berezovskaya A, Nadler LM and Boussiotis VA

Involvement of Crm 1 in hepatitis B virus X protein-induced aberrant centriole replication and abnormal mitotic spindles

Hepatitis B virus (HBV) includes an X gene (HBx gene) that plays a critical role in liver carcinogenesis. Because centrosome abnormalities are associated with genomic instability in most human cancer cells, we examined the effect of HBx on...
Authors: Forgues M, Difilippantonio MJ, Linke SP, Ried T, Nagashima K, Feden, J, Valerie K, Fukasawa K and...

Involvement of caspase-4 in endoplasmic reticulum stress-induced apoptosis and A-induced cell death

Recent studies have suggested that neuronal death in Alzheimer's disease or ischemia could arise from dysfunction of the endoplasmic reticulum (ER). Although caspase-12 has been implicated in ER stress-induced apoptosis and amyloid-beta...
Authors: Hitomi J, Katayama T, Eguchi Y, Kudo T, Taniguchi M, Koyama Y, Manabe T, Yamagishi S, Bando Y,...

Combined spatial and enzymatic regulation of Csk by cAMP and protein kinase A inhibits T cell receptor signaling

Raft-associated Csk controls signaling through the T cell receptor (TCR) and was mainly anchored to Cbp/PAG (phosphoprotein associated with glycosphingolipid-enriched membrane domains). Treatment of cells with the cAMP-elevating agent prostaglandin...
Authors: Vang T, Abrahamsen H, Myklebust S, Horejesi V and Taskén K

Novel cell specific and dominant negative anti apoptotic roles of p73 in transformed leukemia cells

Although extensive homology exists between related genes p53 and p73, recent data suggest that the family members have divergent roles. We demonstrate that the differential regulatory roles of p53 family member p73 are highly cell-context and...
Authors: Freebern W, Smith JL, Chaudhry SS, Haggerty CM and Gardner K

Rab3D and annexin A2 play a role in regulated secretion of vWF, but not tPA, from endothelial cells

von-Willebrand factor (vWF) and tissue-type plasminogen activator (tPA) are products of endothelial cells acutely released into the vasculature following cell activation. Both factors are secreted after intraendothelial Ca(2+) mobilization, but...
Authors: Knop M, Aareskjold E, Bode G and Gerke V

A central role for the Jun-N-terminal kinase pathway in mediating the antagonistic activity of pro-inflammatory cytokines against transforming growth factor-beta-driven Smad3/4 specific gene expression

We have focused our attention on the molecular events underlying the antagonistic activities of pro-inflammatory cytokines against transforming growth factor-beta (TGF-beta)/SMAD signaling. Using jnk1/2-knockout (jnk(-/-)) and I kappa B...
Authors: Verrecchia F, Tacheau C, Wagner EF and Mauviel A

PKD1/PKCµ promotes alphavbeta3 integrin recycling and delivery to nascent focal adhesions

To identify kinases that regulate integrin recycling, we have immunoprecipitated alphavbeta3 integrin from NIH 3T3 fibroblasts in the presence and absence of primaquine (a drug that inhibits receptor recycling and leads to accumulation of integrins...
Authors: Woods AJ, White DP, Caswell PT and Norman JC
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