Fc Receptor is Involved in Nk Cell Functional Anergy Induced by Miapaca2 Tumor Cell Line

Ostapchuk Y.O. Perfilyeva Y.V. Kali A. Tleulieva R. Yurikova O.Y. Stanbekova G.E. Karalnik B.V. Belyaev N.N.
2022 Taylor and Francis Ltd.

Immunological Investigations
2022 #51 Issue 1 138 - 153 pp.

Impaired NK cytotoxicity has been linked to poor cancer prognosis, but its mechanisms are not clearly established. Increasing data demonstrate that NK cells lose cytotoxicity after interaction with NK cell-sensitive tumor cells. In this paper, we provide evidence that the human adenocarcinoma cell line MiaPaCa2 and TNFα and TGFβ-treated MiaPaCa2 cultures (MiaPaCa2-TT) induced functional anergy of NK cells via FGL2 protein. MiaPaCa2-TT cultures decreased expression of IFNγ, CD107a, DNAM-1, and stimulated expression of PD1 by NK cells, as well as inhibited their cytotoxic activity in a greater manner compared to the parental culture. More importantly, we found that co-cultivation with anergized NK cells decreased expression of IFNγ and CD107a by naïve NK cells, which supports the hypothesis of NK cell functional anergy transmission. The obtained results suggest a mechanism by which tumor cells may inhibit cytotoxic functions of tumor-infiltrating and circulating NK cells in cancer. Abbreviations: CFSE: Carboxyfluorescein diacetate succinimidyl ester; CSCs: Cancer stem cells; FGL2: Fibrinogen-like protein 2; mAbs: Monoclonal antibodies; MiaPaCa2: Human adenocarcinoma cell line; MiaPaCa2-ТТ: Adenocarcinoma cell line MiaPaCa2 cells stimulated with TNFα and TGFβ-1; PI: Propidium iodide; TGFβ: Transforming growth factor beta; TME: Tumor microenvironment; TNFα: Tumor necrosis factor alfa.

cytotoxicity , FGL-2 , functional anergy , Natural killer cells , pancreatic adenocarcinoma MiaPaCa2

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Laboratory of Molecular Immunology and Immunobiotechnology, M.A. Aitkhozhin’s Institute of Molecular Biology and Biochemistry, Almaty, Kazakhstan
Biomedical Research Center, Al-Farabi Kazakh National University, Almaty, Kazakhstan
Laboratory of Protein and Nucleic Acids, M.A. Aitkhozhin’s Institute of Molecular Biology and Biochemistry, Almaty, Kazakhstan
Scientific Center for Hygiene and Epidemiology named after Kh. Zhumatov, Natioanl Public Health Center, Almaty, Kazakhstan
Department of New Technologies, Saint-Petersburg Pasteur Institute, Saint-Petersburg, Russian Federation

Laboratory of Molecular Immunology and Immunobiotechnology
Biomedical Research Center
Laboratory of Protein and Nucleic Acids
Scientific Center for Hygiene and Epidemiology named after Kh. Zhumatov
Department of New Technologies

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