Linked Life Data

20483768

Source:http://linkedlifedata.com/resource/pubmed/id/20483768

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2010-6-7
pubmed:abstractText
The TNF alpha-induced protein 3 (TNFAIP3) is an ubiquitin-modifying enzyme and an essential negative regulator of inflammation. Genome-wide association studies have implicated the TNFAIP3 locus in susceptibility to autoimmune disorders in European cohorts, including rheumatoid arthritis, coronary artery disease, psoriasis, celiac disease, type 1 diabetes, inflammatory bowel disease, and systemic lupus erythematosus (SLE). There are two nonsynonymous coding polymorphisms in the deubiquitinating (DUB) domain of TNFAIP3: F127C, which is in high-linkage disequilibrium with reported SLE-risk variants, and A125V, which has not been previously studied. We conducted a case-control study in African-American SLE patients using these coding variants, along with tagging polymorphisms in TNFAIP3, and identified a novel African-derived risk haplotype that is distinct from previously reported risk variants (odds ratio=1.6, p=0.006). In addition, a rare protective haplotype was defined by A125V (odds ratio=0.31, p=0.027). Although A125V was associated with protection from SLE, surprisingly the same allele was associated with increased risk of inflammatory bowel disease. We tested the functional activity of nonsynonymous coding polymorphisms within TNFAIP3, and found that the A125V coding-change variant alters the DUB activity of the protein. Finally, we used computer modeling to depict how the A125V amino acid change in TNFAIP3 may affect the three-dimensional structure of the DUB domain to a greater extent than F127C. This is the first report of an association between TNFAIP3 polymorphisms and autoimmunity in African-Americans.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1550-6606
pubmed:author
pubmed:issnType
Electronic
pubmed:day
15
pubmed:volume
184
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
7001-9
pubmed:meshHeading
pubmed-meshheading:20483768-African Americans, pubmed-meshheading:20483768-Autoimmunity, pubmed-meshheading:20483768-Case-Control Studies, pubmed-meshheading:20483768-Genetic Predisposition to Disease, pubmed-meshheading:20483768-Genome-Wide Association Study, pubmed-meshheading:20483768-Humans, pubmed-meshheading:20483768-Immunoblotting, pubmed-meshheading:20483768-Immunoprecipitation, pubmed-meshheading:20483768-Intracellular Signaling Peptides and Proteins, pubmed-meshheading:20483768-Lupus Erythematosus, Systemic, pubmed-meshheading:20483768-Nuclear Proteins, pubmed-meshheading:20483768-Polymerase Chain Reaction, pubmed-meshheading:20483768-Polymorphism, Genetic, pubmed-meshheading:20483768-Polymorphism, Single Nucleotide, pubmed-meshheading:20483768-Protein Structure, Quaternary, pubmed-meshheading:20483768-Transfection
pubmed:year
2010
pubmed:articleTitle
African-derived genetic polymorphisms in TNFAIP3 mediate risk for autoimmunity.
pubmed:affiliation
Department of Medicine, University of Chicago, Chicago, IL 60612, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural