Immunoregulatory circuits among T-cell sets. I. T-helper cells induce other T-cell sets to exert feedback inhibition.
نویسندگان
چکیده
منابع مشابه
Immunoregulatory circuits among T-cell sets. I. T-helper cells induce other T-cell sets to exert feedback inhibition
These experiments test the hypothesis that cells carrying the Ly1+23- surface phenotype are programmed exclusively for helper and not suppressive activity regardless of external conditions such as the mode or type of antigen stimulation. To this end, we have stimulated purified populations of Ly1 cells with antigen in vitro using conditions devised to induce unselected T cells to express optima...
متن کاملImmunoregulatory circuits among T-cell sets. Identification of a subpopulation of T-helper cells that induces feedback inhibition
Purified Ly1 cells induce other T-cell sets to exert potent feedback inhibitory activity and this T-T interaction has been shown to play an important role in regulating in vivo immune responses. Approximately 2/3 of Ly1 cells also express the Qa1 surface phenotype (Ly1:Qa1+ cells). The experiments reported here indicate that Ly1:Qal+ cells are responsible for induction of feedback inhibition an...
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Dendritic cells (DCs) induce pathogen-specific T cell responses. We comprehensively studied the effects of addition of maturation stimulus, fibroblasts (fibroblast conditioned medium), PHA activated T cells (T cell conditioned medium), and mixture of fibroblast & PHA activated T cells (FCM-TCCM) conditioned media on maturation of DCs. Monocytes were cultured with GM-CSF and IL-4 for five days. ...
متن کاملImmunoregulatory circuits among T-cell sets. II. Physiologic role of feedback inhibition in vivo: absence in NZB mice
We have shown that (a) purified T-helper cells induce cells of another T-cell set-, expressing the Ly123+Qa1+ surface phenotype, to exert potent suppressive activity, (b) this T-T interaction plays an important role in regulating in vivo immune responses, and (c) this interaction represents an important barrier to protocols intended to augment the immune status of individuals by adoptive (or ac...
متن کاملfibroblast and t cells conditioned media induce maturation dendritic cell and promote t helper immune response
dendritic cells (dcs) induce pathogen-specific t cell responses. we comprehensively studied the effects of addition of maturation stimulus, fibroblasts (fibroblast conditioned medium), pha activated t cells (t cell conditioned medium), and mixture of fibroblast & pha activated t cells (fcm-tccm) conditioned media on maturation of dcs. monocytes were cultured with gm-csf and il-4 for five da...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1978
ISSN: 0022-1007,1540-9538
DOI: 10.1084/jem.147.4.1106