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Updated: Jan 31, 2026

In Vitro Assay of Plasmodium-Infected Red Blood Cell Killing by Cytotoxic Lymphocytes
Published on: August 17, 2022
T-cell type lymphoproliferative disease of granular lymphocytes (LDGL) is equipped with a phenotypic pattern typical
Ilenia Baesso1, Laura Pavan, Elisa Boscaro
1Padua University School of Medicine, Department of Clinical and Experimental Medicine, Hematology and Clinical Immunology Branch, University of Padua, Italy.
By analyzing the expression of several cytotoxic markers, killer-immunoglobulin-like receptors (KIRs), CD94/CD159, CD314 and natural cytotoxicity receptors (NCRs), in 22 CD3+ lymphoproliferative disease of granular lymphocyte (LDGL) patients we investigated whether granular lymphocytes (GLs) displayed the phenotype of fully differentiated cytotoxic cells. Our results demonstrate that GLs express a pattern consistent with fully differentiated CTLs. KIRs are expressed only in a fraction of patients (7/22), as is CD94/CD159 (5/22). In conclusion, GLs in CD3+ LDGL patients typically show the phenotype of fully differentiated CTL, whereas the expression of NK receptors does not represent a common feature of the proliferating clone.
By analyzing the expression of several cytotoxic markers, killer-immunoglobulin-like receptors (KIRs), CD94/CD159, CD314 and natural cytotoxicity receptors (NCRs), in 22 CD3+ lymphoproliferative disease of granular lymphocyte (LDGL) patients we investigated whether granular lymphocytes (GLs) displayed the phenotype of fully differentiated cytotoxic cells. Our results demonstrate that GLs express a pattern consistent with fully differentiated CTLs. KIRs are expressed only in a fraction of patients (7/22), as is CD94/CD159 (5/22). In conclusion, GLs in CD3+ LDGL patients typically show the phenotype of fully differentiated CTL, whereas the expression of NK receptors does not represent a common feature of the proliferating clone.
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