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EnglishWe investigated the effects of Il-12 on functional properties of CD3+ CD8+ granular lymphocytes (GL) of of patients with lymphoproliferative disease of granular lymphocytes (LDGL). To this aim, in 10 cases with clonal CD3+ GL proliferation (nine cases with an associated TCR alpha/beta receptor and one case with a TCR gamma/delta receptor) we studied the proliferative and cytotoxic activities of resting and alpha CD3 monoclonal antibody (mAb) activated cells in the presence of rIL-12 and anti-IL-12 blocking antibodies. Specific mRNA for IL-12 p40 subunit was also investigated. Our results showed that rIL-12 increased the proliferation of alpha CD3 pre-stimulated GL (2 to 6 times). Further, anti-IL-12 antibodies partially inhibited alpha CD3-induced cell growth, suggesting a role for this cytokine in the alpha CD3-mediated GL activation. The addition of antibodies blocking the p55 and p75 chains of IL-2 receptor (IL-2R) did not inhibit the rIL-12-mediated cell proliferation, indicating that the activity of
| Titolo: | IL-12 is involved in the activation of CD3+ granular lymphocytes in patients with lymphoproliferative disease of granular lymphocytes |
| Autori: | |
| Data di pubblicazione: | 1996 |
| Rivista: | |
| Abstract: | We investigated the effects of Il-12 on functional properties of CD3+ CD8+ granular lymphocytes (GL) of of patients with lymphoproliferative disease of granular lymphocytes (LDGL). To this aim, in 10 cases with clonal CD3+ GL proliferation (nine cases with an associated TCR alpha/beta receptor and one case with a TCR gamma/delta receptor) we studied the proliferative and cytotoxic activities of resting and alpha CD3 monoclonal antibody (mAb) activated cells in the presence of rIL-12 and anti-IL-12 blocking antibodies. Specific mRNA for IL-12 p40 subunit was also investigated. Our results showed that rIL-12 increased the proliferation of alpha CD3 pre-stimulated GL (2 to 6 times). Further, anti-IL-12 antibodies partially inhibited alpha CD3-induced cell growth, suggesting a role for this cytokine in the alpha CD3-mediated GL activation. The addition of antibodies blocking the p55 and p75 chains of IL-2 receptor (IL-2R) did not inhibit the rIL-12-mediated cell proliferation, indicating that the activity of |
| Handle: | http://hdl.handle.net/11562/515 |
| Appare nelle tipologie: | 01.01 Articolo in Rivista |
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