pubmed-article:19292772 | rdf:type | pubmed:Citation | lld:pubmed |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C1167395 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0021758 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0014442 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0036087 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0039194 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C1171362 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0013126 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0040203 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C1332714 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0017262 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C1515670 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0679622 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0205314 | lld:lifeskim |
pubmed-article:19292772 | lifeskim:mentions | umls-concept:C0282510 | lld:lifeskim |
pubmed-article:19292772 | pubmed:issue | 4 | lld:pubmed |
pubmed-article:19292772 | pubmed:dateCreated | 2009-3-18 | lld:pubmed |
pubmed-article:19292772 | pubmed:abstractText | Tick feeding modulates host immune responses. Tick-induced skewing of host CD4(+) T cells towards a Th2 cytokine profile facilitates transmission of tick-borne pathogens that would otherwise be neutralized by Th1 cytokines. Tick-derived factors that drive this Th2 response have not previously been characterized. In the current study, we examined an I. scapularis cDNA library prepared at 18-24 h of feeding and identified and expressed a tick gene with homology to Loxosceles spider venom proteins with sphingomyelinase activity. This I. scapularis sphingomyelinase-like (IsSMase) protein is a Mg(2+)-dependent, neutral (pH 7.4) form of sphingomyelinase. Significantly, in an in vivo TCR transgenic adoptive transfer assay IsSMase programmed host CD4(+) T cells to express the hallmark Th2 effector cytokine IL-4. IsSMase appears to directly programme host CD4 T cell IL-4 expression (as opposed to its metabolic by-products) because induced IL-4 expression was not altered when enzymatic activity was neutralized. TCR transgenic CD4 T cell proliferation (CFSE-dilution) was also significantly increased by IsSMase. Furthermore, a Th2 response is superimposed onto a virally primed Th1 response by IsSMase. Thus, IsSMase is the first identified tick molecule capable of programming host CD4(+) T cells to express IL-4. | lld:pubmed |
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pubmed-article:19292772 | pubmed:language | eng | lld:pubmed |
pubmed-article:19292772 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:19292772 | pubmed:citationSubset | IM | lld:pubmed |
pubmed-article:19292772 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:19292772 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:19292772 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
pubmed-article:19292772 | pubmed:status | MEDLINE | lld:pubmed |
pubmed-article:19292772 | pubmed:month | Apr | lld:pubmed |
pubmed-article:19292772 | pubmed:issn | 1365-3024 | lld:pubmed |
pubmed-article:19292772 | pubmed:author | pubmed-author:AdlerA JAJ | lld:pubmed |
pubmed-article:19292772 | pubmed:author | pubmed-author:WikelS KSK | lld:pubmed |
pubmed-article:19292772 | pubmed:author | pubmed-author:Alarcon-Chaid... | lld:pubmed |
pubmed-article:19292772 | pubmed:author | pubmed-author:BoppanaV DVD | lld:pubmed |
pubmed-article:19292772 | pubmed:author | pubmed-author:HagymasiA TAT | lld:pubmed |
pubmed-article:19292772 | pubmed:issnType | Electronic | lld:pubmed |
pubmed-article:19292772 | pubmed:volume | 31 | lld:pubmed |
pubmed-article:19292772 | pubmed:owner | NLM | lld:pubmed |
pubmed-article:19292772 | pubmed:authorsComplete | Y | lld:pubmed |
pubmed-article:19292772 | pubmed:pagination | 210-9 | lld:pubmed |
pubmed-article:19292772 | pubmed:dateRevised | 2011-9-26 | lld:pubmed |
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