6533b870fe1ef96bd12d0744

RESEARCH PRODUCT

WHOLE BODY IRRADIATION INDUCES IFN-γ PRODUCTION IN BALB/c MICE BY PREVENTING THE APPEARANCE OF A Vα14+NK T DOWNREGULATORY POPULATION

Guido SireciCaterina Di SanoFrancesco DieliAlfredo SalernoGeoffrey L. AshersonDiego CignaMasaru Taniguchi

subject

CD4-Positive T-LymphocytesMalemedicine.drug_classCD8 AntigensReceptors Antigen T-Cell alpha-betaImmunologyPopulationWhole body irradiationAntigen-Presenting CellsDown-RegulationAntigens ProtozoanEnzyme-Linked Immunosorbent AssayCell SeparationMonoclonal antibodyBiochemistryBALB/cInterferon-gammaMiceAntigenmedicineAnimalsImmunology and AllergyeducationMolecular BiologyLymph nodeLeishmania majorMice Inbred BALB Ceducation.field_of_studybiologyChemistryT-cell receptorAntibodies MonoclonalHematologyFlow Cytometrybiology.organism_classificationMolecular biologyIn vitroKiller Cells NaturalPhenotypemedicine.anatomical_structureCD4 AntigensImmunologyInterleukin-4Lymph NodesSpleen

description

Lymph node cells from TNCB-immune BALB/c mice fail to produce IFN-gamma when exposed to antigen in vitro. Conversely, lymph node cells of irradiated (550 rads) BALB/c mice produce IFN-gamma. Transfer experiments show that normal BALB/c mice contain cells which suppress IFN-gamma production. These downregulatory cells are CD4(+)alpha beta(+)and rearrange the invariant V alpha 14-J alpha 281 T cell receptor alpha chain, thus belonging to the NK T cell subset. Downregulatory cells probably act by producing IL-4 as their effect is blocked by mAb to IL-4.

yearjournalcountryeditionlanguage
2000-09-08Cytokine
https://doi.org/10.1006/cyto.2000.0709