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Pro- and Anti-Inflammatory Cytokines in the Context of NK Cell-Trophoblast Interactions. Int J Mol Sci 2022; 23:ijms23042387. [PMID: 35216502 PMCID: PMC8878424 DOI: 10.3390/ijms23042387] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 02/04/2023] Open
Abstract
During pregnancy, uterine NK cells interact with trophoblast cells. In addition to contact interactions, uterine NK cells are influenced by cytokines, which are secreted by the cells of the decidua microenvironment. Cytokines can affect the phenotypic characteristics of NK cells and change their functional activity. An imbalance of pro- and anti-inflammatory signals can lead to the development of reproductive pathology. The aim of this study was to assess the effects of cytokines on NK cells in the presence of trophoblast cells in an in vitro model. We used TNFα, IFNγ, TGFβ and IL-10; the NK-92 cell line; and peripheral blood NK cells (pNKs) from healthy, non-pregnant women. For trophoblast cells, the JEG-3 cell line was used. In the monoculture of NK-92 cells, TNFα caused a decrease in CD56 expression. In the coculture of NK cells with JEG-3 cells, TNFα increased the expression of NKG2C and NKG2A by NK-92 cells. Under the influence of TGFβ, the expression of CD56 increased and the expression of NKp30 decreased in the monoculture. After the preliminary cultivation of NK-92 cells in the presence of TGFβ, their cytotoxicity increased. In the case of adding TGFβ to the PBMC culture, as well as coculturing PBMCs and JEG-3 cells, the expression of CD56 and NKp44 by pNK cells was reduced. The differences in the effects of TGFβ in the model using NK-92 cells and pNK cells may be associated with the possible influence of monocytes or other lymphoid cells from the mononuclear fraction.
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Milyutina YP, Mikhailova VA, Pyatygina KM, Demidova ES, Malygina DA, Tertychnaia TE, Arutjunyan AV, Sokolov DI, Selkov SA. Role of Caspases in the Cytotoxicity of NK-92 Cells in Various Models of Coculturing with Trophoblasts. BIOCHEMISTRY (MOSCOW) 2019; 84:1186-1196. [PMID: 31694514 DOI: 10.1134/s0006297919100079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Studies of interactions between natural killer (NK) cells and trophoblasts and identification of conditions for the NK cells to perform their cytotoxic function are of fundamental and practical importance for understanding their role in the development of pathological processes and complications during pregnancy. In this study, we examined changes in the content of caspases and studied activation of these enzymes in Jeg-3 trophoblasts in various models of their coculturing with NK-92 cells and demonstrated the necessity of direct contact between these cell populations for the activation of caspase-8 and caspase-3 in the trophoblasts. Contact coculturing of the two cell lines resulted in the appearance of the cytotoxic protein granzyme B in Jeg-3 cells that was accompanied by a decrease in the content of this enzyme in NK-92 cells. Distant coculturing of NK-92 and Jeg-3 cells did not trigger initiator and effector caspases characteristic for the apoptosis development in Jeg-3 cells. The observed decrease in the content of procaspases in the trophoblasts may be associated with alternative non-apoptotic functions of these enzymes.
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Affiliation(s)
- Yu P Milyutina
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia.
| | - V A Mikhailova
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - K M Pyatygina
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - E S Demidova
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - D A Malygina
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - T E Tertychnaia
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - A V Arutjunyan
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - D I Sokolov
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
| | - S A Selkov
- Ott Institute of Obstetrics, Gynecology, and Reproductology, St. Petersburg, 199034, Russia
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