Tumor necrosis factor activates CRE-binding protein through a p38 MAPK/MSK1 signaling pathway in endothelial cells.
Tumor necrosis factor (TNF) promotes immunity and modulates cell viability, in part, by promoting alterations of cellular gene expression. The mechanisms through which TNF communicates with the nucleus and alters gene expression are incompletely understood. Incubation of human umbilical vein endothelial cells (HUVEC) with TNF induces phosphorylation of the CRE-binding protein (CREB) transcription factor on serine 133 and increases CREB DNA binding and transactivation. Dominant negative CREB, an antagonist antibody directed against the type 1 TNF receptor, or pharmacological inhibition of p38 MAPK signaling blocked TNF-induced CREB activation as determined by phosphorylation and gene reporter assays. From among the kinases that can activate CREB, we found that downstream of p38 MAPK, MSK1 is activated by TNF to promote CREB activation. These observations show that CREB is activated by TNF/TNFR1 signaling through a p38MAPK/MSK1 signaling pathway.
Gustin
Jason A
JA
Department of Microbiology and Immunology, Indiana University School of Medicine, and the Walther Cancer Institute, Indianapolis, Indiana 46202, USA.
Pincheira
Roxana
R
Mayo
Lindsey D
LD
Ozes
Osman Nidai
ON
Kessler
Kelly M
KM
Baerwald
Melinda R
MR
Korgaonkar
Chandrashekhar K
CK
Donner
David B
DB
D015703:Antigens, CD / Q000378:metabolism; D000970:Antineoplastic Agents / Q000378:metabolism* / Q000494:pharmacology; D002478:Cells, Cultured; D017362:Cyclic AMP Response Element-Binding Protein / Q000235:genetics / Q000378:metabolism*; D004730:Endothelium, Vascular / Q000166:cytology / Q000378:metabolism*; D006801:Humans; D020935:MAP Kinase Signaling System / Q000187:drug effects / Q000502:physiology; D020928:Mitogen-Activated Protein Kinases / Q000378:metabolism*; D010766:Phosphorylation; D018124:Receptors, Tumor Necrosis Factor / Q000378:metabolism; D047888:Receptors, Tumor Necrosis Factor, Type I; D038744:Ribosomal Protein S6 Kinases, 90-kDa / Q000378:metabolism*; D012694:Serine / Q000378:metabolism; D015533:Transcriptional Activation / Q000187:drug effects / Q000502:physiology; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism* / Q000494:pharmacology; D014471:Umbilical Veins / Q000166:cytology; D048051:p38 Mitogen-Activated Protein Kinases
D015703:Antigens, CD; D000970:Antineoplastic Agents; D017362:Cyclic AMP Response Element-Binding Protein; D018124:Receptors, Tumor Necrosis Factor; D047888:Receptors, Tumor Necrosis Factor, Type I; D014409:Tumor Necrosis Factor-alpha; D012694:Serine; D038744:Ribosomal Protein S6 Kinases, 90-kDa; C116919:mitogen and stress-activated protein kinase 1; D020928:Mitogen-Activated Protein Kinases; D048051:p38 Mitogen-Activated Protein Kinases