Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
24
pubmed:dateCreated
2010-12-14
pubmed:abstractText
We have developed a major histocompatibility complex-defined primate model of graft-versus-host disease (GVHD) and have determined the effect that CD28/CD40-directed costimulation blockade and sirolimus have on this disease. Severe GVHD developed after haploidentical transplantation without prophylaxis, characterized by rapid clinical decline and widespread T-cell infiltration and organ damage. Mechanistic analysis showed activation and possible counter-regulation, with rapid T-cell expansion and accumulation of CD8(+) and CD4(+) granzyme B(+) effector cells and FoxP3(pos)/CD27(high)/CD25(pos)/CD127(low) CD4(+) T cells. CD8(+) cells down-regulated CD127 and BCl-2 and up-regulated Ki-67, consistent with a highly activated, proliferative profile. A cytokine storm also occurred, with GVHD-specific secretion of interleukin-1 receptor antagonist (IL-1Ra), IL-18, and CCL4. Costimulation Blockade and Sirolimus (CoBS) resulted in striking protection against GVHD. At the 30-day primary endpoint, CoBS-treated recipients showed 100% survival compared with no survival in untreated recipients. CoBS treatment resulted in survival, increasing from 11.6 to 62 days (P < .01) with blunting of T-cell expansion and activation. Some CoBS-treated animals did eventually develop GVHD, with both clinical and histopathologic evidence of smoldering disease. The reservoir of CoBS-resistant breakthrough immune activation included secretion of interferon-?, IL-2, monocyte chemotactic protein-1, and IL-12/IL-23 and proliferation of cytotoxic T-lymphocyte-associated antigen 4 immunoglobulin-resistant CD28(-) CD8(+) T cells, suggesting adjuvant treatments targeting this subpopulation will be needed for full disease control.
pubmed:grant
http://linkedlifedata.com/resource/pubmed/grant/, http://linkedlifedata.com/resource/pubmed/grant/1 R01 HL095791-01A1, http://linkedlifedata.com/resource/pubmed/grant/1R01 RR18144-01, http://linkedlifedata.com/resource/pubmed/grant/2P01 AI044644, http://linkedlifedata.com/resource/pubmed/grant/2R01 HL56067, http://linkedlifedata.com/resource/pubmed/grant/2U19 AI051731, http://linkedlifedata.com/resource/pubmed/grant/2U24 RR018109, http://linkedlifedata.com/resource/pubmed/grant/5K08 AI065822, http://linkedlifedata.com/resource/pubmed/grant/P01AI 056299, http://linkedlifedata.com/resource/pubmed/grant/R01 HL 63452, http://linkedlifedata.com/resource/pubmed/grant/R01 HL095791-02, http://linkedlifedata.com/resource/pubmed/grant/R01AI 34495, http://linkedlifedata.com/resource/pubmed/grant/RR00165
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1528-0020
pubmed:author
pubmed:issnType
Electronic
pubmed:day
9
pubmed:volume
116
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
5403-18
pubmed:dateRevised
2011-2-3
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
GVHD after haploidentical transplantation: a novel, MHC-defined rhesus macaque model identifies CD28- CD8+ T cells as a reservoir of breakthrough T-cell proliferation during costimulation blockade and sirolimus-based immunosuppression.
pubmed:affiliation
Aflac Cancer Center and Blood Disorders Service, Children's Healthcare of Atlanta, and Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural