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http://purl.uniprot.org/citations/16917499http://www.w3.org/1999/02/22-rdf-syntax-ns#typehttp://purl.uniprot.org/core/Journal_Citation
http://purl.uniprot.org/citations/16917499http://www.w3.org/2000/01/rdf-schema#comment"Dendritic cells (DC) play a central role in immune responses by presenting antigenic peptides to CD4+ T cells through MHCII molecules. Here, we demonstrate a TRIF-GEFH1-RhoB pathway is involved in MHCII surface expression on DC. We show the TRIF (TIR domain-containing adapter inducing IFNbeta)-but not the myeloid differentiation factor 88 (MyD88)-dependent pathway of lipopolysaccharide (LPS)-signaling in DC is crucial for the MHCII surface expression, followed by CD4+ T-cell activation. LPS increased the activity of RhoB, but not of RhoA, Cdc42, or Rac1/2 in a manor dependent on LPS-TRIF-but not LPS-Myd88-signaling. RhoB colocalized with MHCII+ lysosomes in DC. A dominant-negative (DN) form of RhoB (DN-RhoB) or RhoB's RNAi in DC inhibited the LPS-induced MHCII surface expression. Moreover, we found GEFH1 associated with RhoB, and DN-GEFH1 or GEFH1's RNAi suppressed the LPS-mediated RhoB activation and MHCII surface expression. DN-RhoB attenuated the DC's CD4+ T-cell stimulatory activity. Thus, our results provide a molecular mechanism relating how the MHCII surface expression is regulated during the maturation stage of DC. The activation of GEFH1-RhoB through the TRIF-dependent pathway of LPS in DC might be a critical target for controlling the activation of CD4+ T cells."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.org/dc/terms/identifier"doi:10.1038/sj.emboj.7601286"xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Kitamura H."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Lee J."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Iwamatsu A."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Koga H."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Murakami M."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Hirano T."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Akira S."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Kawabe T."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Kaisho T."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Kamimura D."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/author"Kamon H."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/date"2006"xsd:gYear
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/name"EMBO J"xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/pages"4108-4119"xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/title"TRIF-GEFH1-RhoB pathway is involved in MHCII expression on dendritic cells that is critical for CD4 T-cell activation."xsd:string
http://purl.uniprot.org/citations/16917499http://purl.uniprot.org/core/volume"25"xsd:string
http://purl.uniprot.org/citations/16917499http://www.w3.org/2004/02/skos/core#exactMatchhttp://purl.uniprot.org/pubmed/16917499
http://purl.uniprot.org/citations/16917499http://xmlns.com/foaf/0.1/primaryTopicOfhttps://pubmed.ncbi.nlm.nih.gov/16917499
http://purl.uniprot.org/uniprot/#_P52735-mappedCitation-16917499http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/16917499
http://purl.uniprot.org/uniprot/#_O15085-mappedCitation-16917499http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/16917499
http://purl.uniprot.org/uniprot/#_P62745-mappedCitation-16917499http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/16917499
http://purl.uniprot.org/uniprot/#_P62746-mappedCitation-16917499http://www.w3.org/1999/02/22-rdf-syntax-ns#objecthttp://purl.uniprot.org/citations/16917499