Tag7 (PGLYRP1) Can Induce an Emergence of the CD3+CD4+CD25+CD127+ Cells with Antitumor Activity
Overview
Affiliations
We have shown that in the human peripheral blood cells, the innate immunity protein Tag7 can activate a subpopulation of CD3+CD4+CD25+ cells, which have antitumor activity. These cells can induce lysis of HLA-negative tumor cell lines. The Hsp70 stress molecule on the surface of the tumor cells is used as a recognition target, while the Tag7 protein on the lymphocyte membrane acts as a receptor for Hsp70. We have also demonstrated that this subpopulation of the CD4+CD25+ cells is CD127 positive and hence is not the Treg cells. Our data suggest that this subpopulation of cells is identical to the CD4+CD25+ lymphocytes, which are activated in the leukocyte pool by the IL-2 cytokine.
Khair L, Hayes K, Tutto A, Samant A, Ferreira L, Nguyen T bioRxiv. 2023; .
PMID: 37873380 PMC: 10592839. DOI: 10.1101/2023.09.30.560299.
Immune Dysregulation in IgG-Related Disease.
Liu J, Yin W, Westerberg L, Lee P, Gong Q, Chen Y Front Immunol. 2021; 12:738540.
PMID: 34539675 PMC: 8440903. DOI: 10.3389/fimmu.2021.738540.
Mechanisms of Action of the PGLYRP1/Tag7 Protein in Innate and Acquired Immunity.
Yashin D, Sashchenko L, Georgiev G Acta Naturae. 2021; 13(1):91-101.
PMID: 33959389 PMC: 8084298. DOI: 10.32607/actanaturae.11102.