6533b7d0fe1ef96bd125b82e
RESEARCH PRODUCT
Requirements for the growth of TH1 lymphocyte clones.
Andrea PartenheimerErwin RüdeTieno Germannsubject
Antigens Differentiation T-LymphocyteCD3 Complexmedicine.medical_treatmentT cellLymphocyteImmunologyReceptors Antigen T-CellAntigen-Presenting CellsBiologyLymphocyte ActivationMicemedicineImmunology and AllergyAnimalsAntigen-presenting cellInterleukin 4Mice Inbred BALB CCell growthMacrophage Colony-Stimulating FactorMacrophagesT-cell receptorAntibodies MonoclonalReceptors Interleukin-2T lymphocyteT-Lymphocytes Helper-InducerMolecular biologyCytokinemedicine.anatomical_structureImmunologyInterleukin-1description
Besides the signal generated in a T lymphocyte after triggering the T cell receptor (TcR), most lymphocytes need a "second signal" to become fully activated. The necessity and nature of the "second signal" differs between different types of T cells. At the level of CD4-positive T helper lymphocytes interleukin 1 (IL 1) serves as "second signal" for those of the TH2 subtype (IL4, 5, 6 producer) but not for those of the TH1 subtype (IL 2, IFN-gamma producer). This correlates with the absence of the IL 1 receptor at the surface of TH1 clones. We report herein the further purification of T cell stimulating factor (TSF), a soluble mediator involved in the proliferation of TH1 lymphocytes. A preparation free of detectable IL 1, 2, 4 and IL 6 activity could act as "second signal" required for the growth of TH1 lymphocytes in a TcR-mediated, as well as a TcR-independent activation system. In addition, we suggest that IL 1 can influence the proliferation of TH1 clones in an indirect way, probably via the induction of TSF in accessory cells.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1990-09-01 | European journal of immunology |