Tatiana N Sharapova

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Naïve non-activated lymphocytes are capable of releasing the chemoattractant complex Tag7–Mts1 and can migrate along the gradient of its concentration. After activation of these cells by IL-2, they acquire the abilities to kill tumor cells and to release the cytotoxic Tag7–Hsp70 complex, which is accompanied by a loss of both the Tag7–Mts1-mediated(More)
The results of comparative analysis of interaction between the protein cytotoxic complex Tag 7–Hsp70 and the Tag 7 component of this complex with TNFR1 receptor in solution and in tumor cells are presented.
Tag7 (PGRP-S or PGLYRP1), while possessing an antimicrobial activity, also exhibits an antitumor effect when in complex with the major heat shock protein Hsp70. The cytotoxic Tag7-Hsp70 complex is secreted by lymphocytes after interaction with the HLA-negative tumors. Previously, we have shown that IL-2 induces formation of the CD4+ and CD8+ cytotoxic(More)
An important problem in cellular immunology is to identify new populations of cytotoxic lymphocytes capable of killing tumor cells that have lost classical components of MHC-machinery and to understand mechanisms of the death of these cells. We have previously found that CD4+ CD25+ lymphocytes appear in the lymphokine-activated killer (LAK) cell culture,(More)
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