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Cytotoxic T-cell activation by polyribonucleotides: DNA synthesis is not required
We have shown that cytotoxic T cells can be polyclonally activated by a short exposure to complexes of polyadenylic:polyuridylic acid (poly A:U). Activation is optimal at a dose of 100 microgram/ml poly A:U and occurs during a 2 h incubation period in the absence of antigen. Killing of allogeneic, b...
Formato: | Texto |
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Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1977
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2180786/ https://www.ncbi.nlm.nih.gov/pubmed/197193 |
Sumario: | We have shown that cytotoxic T cells can be polyclonally activated by a short exposure to complexes of polyadenylic:polyuridylic acid (poly A:U). Activation is optimal at a dose of 100 microgram/ml poly A:U and occurs during a 2 h incubation period in the absence of antigen. Killing of allogeneic, but not syngeneic, target cells can be observed after 12 h in culture and peaks after 21-24 h in the absence of any nonspecific binding ligand. The observed cytotoxicity is mediated by T lymphocytes and dose not require accessory macrophages or DNA synthesis for the activation or expression of effector functions. These results suggest that few requirements exist for the activation of cytotoxic T cells. |
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