Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
28
pubmed:dateCreated
2011-7-13
pubmed:databankReference
pubmed:abstractText
Precise control of the innate immune response is essential to ensure host defense against infection while avoiding inflammatory disease. Systems-level analyses of Toll-like receptor (TLR)-stimulated macrophages suggested that SHANK-associated RH domain-interacting protein (SHARPIN) might play a role in the TLR pathway. This hypothesis was supported by the observation that macrophages derived from chronic proliferative dermatitis mutation (cpdm) mice, which harbor a spontaneous null mutation in the Sharpin gene, exhibited impaired IL-12 production in response to TLR activation. Systems biology approaches were used to define the SHARPIN-regulated networks. Promoter analysis identified NF-?B and AP-1 as candidate transcription factors downstream of SHARPIN, and network analysis suggested selective attenuation of these pathways. We found that the effects of SHARPIN deficiency on the TLR2-induced transcriptome were strikingly correlated with the effects of the recently described hypomorphic L153P/panr2 point mutation in Ikbkg [NF-?B Essential Modulator (NEMO)], suggesting that SHARPIN and NEMO interact. We confirmed this interaction by co-immunoprecipitation analysis and furthermore found it to be abrogated by panr2. NEMO-dependent signaling was affected by SHARPIN deficiency in a manner similar to the panr2 mutation, including impaired p105 and ERK phosphorylation and p65 nuclear localization. Interestingly, SHARPIN deficiency had no effect on I?B? degradation and on p38 and JNK phosphorylation. Taken together, these results demonstrate that SHARPIN is an essential adaptor downstream of the branch point defined by the panr2 mutation in NEMO.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1091-6490
pubmed:author
pubmed:issnType
Electronic
pubmed:day
12
pubmed:volume
108
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
11536-41
pubmed:meshHeading
pubmed-meshheading:21709223-Animals, pubmed-meshheading:21709223-Base Sequence, pubmed-meshheading:21709223-Carrier Proteins, pubmed-meshheading:21709223-DNA Primers, pubmed-meshheading:21709223-Immunity, Innate, pubmed-meshheading:21709223-Intracellular Signaling Peptides and Proteins, pubmed-meshheading:21709223-Macrophages, pubmed-meshheading:21709223-Mice, pubmed-meshheading:21709223-Mice, Inbred C57BL, pubmed-meshheading:21709223-Mice, Knockout, pubmed-meshheading:21709223-Mutation, pubmed-meshheading:21709223-NF-kappa B, pubmed-meshheading:21709223-Protein Interaction Mapping, pubmed-meshheading:21709223-Signal Transduction, pubmed-meshheading:21709223-Systems Analysis, pubmed-meshheading:21709223-Systems Biology, pubmed-meshheading:21709223-Toll-Like Receptor 2, pubmed-meshheading:21709223-Transcription Factor AP-1
pubmed:year
2011
pubmed:articleTitle
Systems analysis identifies an essential role for SHANK-associated RH domain-interacting protein (SHARPIN) in macrophage Toll-like receptor 2 (TLR2) responses.
pubmed:affiliation
Seattle Biomedical Research Institute, Seattle, WA 98109, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural