Developing understanding of the roles of CD1d-restricted T cell subsets in cancer: reversing tumor-induced defects.
Clin Immunol
; 140(2): 184-95, 2011 Aug.
Article
em En
| MEDLINE
| ID: mdl-21646050
ABSTRACT
Invariant natural killer T-cells ('iNKT') are the best-known CD1d-restricted T-cells, with recently-defined roles in controlling adaptive immunity. CD1d-restricted T-cells can rapidly produce large amounts of Th1 and/or Th2//Treg/Th17-type cytokines, thereby regulating immunity. iNKT can stimulate potent anti-tumor immune responses via production of Th1 cytokines, direct cytotoxicity, and activation of effectors. However, Th2//Treg-type iNKT can inhibit anti-tumor activity. Furthermore, iNKT are decreased and/or reversibly functionally impaired in many advanced cancers. In some cases, CD1d-restricted T-cell cancer defects can be traced to CD1d(+) tumor interactions, since hematopoietic, prostate, and some other tumors can express CD1d. Ligand and IL-12 can reverse iNKT defects and therapeutic opportunities exist in correcting such defects alone and in combination. Early stage clinical trials have shown potential for reconstitution of iNKT IFN-gamma responses and evidence of activity in a subset of patients, with rational new approaches to capitalize on this progress ongoing, as will be discussed here.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Subpopulações de Linfócitos T
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Células T Matadoras Naturais
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Antígenos CD1d
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Neoplasias
Limite:
Humans
Idioma:
En
Ano de publicação:
2011
Tipo de documento:
Article