- Tytuł:
- CD25 (IL-2R) expression correlates with the target cell induced cytotoxic activity and cytokine secretion in human natural killer cells
- Autorzy:
-
Rudnicka, Karolina
Matusiak, Agnieszka
Chmiela, Magdalena - Powiązania:
- https://bibliotekanauki.pl/articles/1038939.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
natural killer cells
CD25
cytotoxic activity
granzyme
caspase
cytokines - Opis:
- Cytotoxic activity is one of the major functions of Natural Killer (NK) cells and is a critical effector mechanism of innate immune responses against infected or cancer cells. A variety of assays have been developed to determine NK cell cytotoxic activity, however a receptor-based screening tool is still lacking. Here, we propose the CD25 receptor as a candidate for NK cell cytotoxicity marker. We have verified that there is a correlation between classic target cell induced cytotoxicity markers and the CD25 expression on NK cells. Non-adherent lymphocyte fractions pre-stimulated with Escherichia coli O55:B5 lipopolysaccharide were co-cultured with settled HeLa targets in a four hour long cytotoxic assay. The cytotoxic effect was evaluated by MTT reduction assay and quantification of soluble cytotoxicity markers (granzyme B, FasL, caspase-8, IFN-γ and IL-2) was done by ELISA. Lymphocytes were stained with anti-CD3-Cy-5, anti-CD56/CD16/Nkp46-FITC and anti-CD25-PE antibodies and analyzed by flow cytometry. We observed that the CD25 expression exclusively on the CD3-CD56+CD25+ NK cells was positively correlated with their cytotoxic function evaluated by the MTT test (r = 0.68), the upregulation of granzyme B (r = 0.89), IL-2 (r = 0.78) and IFN-γ (r = 0.57), however, it was not positively correlated with FasL and caspase-8. We conclude that the CD25 expression might serve as an in vitro receptor-based screening tool for NK cell activity.
- Źródło:
-
Acta Biochimica Polonica; 2015, 62, 4; 885-894
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł