| The role of Interferon-gamma on the Expression of Class I Human Leukocyte Antigens in a Human First Trimester Trophoblast Cell Line. |
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In Bai Chung, Hey Kyoung Han, Na Ok Kim, Jung Sik Ha, Hyun Sook Park, Joo Young Park |
1Department of Obstetrics and Gynecology, Yonsei University, Wonju College of Medicine, Wonju, Kangwon-do, Korea.
2Department of Microbiology, Yonsei University, Wonju College of Medicine, Wonju, Kangwon-do, Korea.
3Department of Institute of basic science, Yonsei University, Wonju College of Medicine, Wonju, Kangwon-do, Korea. |
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| Abstract |
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Precise mechanism which the fetus can escape from mother's immune rejection is not well understood yet during last 50 years. The clarification of immune mechanism at the feto-maternal interface is very important, because this can be a common pathogenesis of various pathologic conditions including spontaneous abortion and habitual abortion. The pivot of this mechanism is cross-talk between the expression of HLA-C, E, G on the extravillous cytotrophoblasts and their receptors on decidual NK (natural killer) cell. The mechanism through which HLA-C, E, G regulation on the extravillous trophoblast is poorly understood. The IFN-gamma is known to be harmful to the successful maintenance of early pregnancy. OBJECTIVE: To clarify whether the IFN-gamma could be involved in the regulation of the HTR-8/SVneo human first trimester cell line. METHODS: We investigated the effects of IFN-gamma only or with other cytokines on the HLA-C, E, G transcripts in human first trimester trophoblast cell-line by using Reverse Transcription Polymerase Chain Reaction (RT-PCR). RESULTS: The trophoblast cells expressed HLA-C, E constitutively. When cultured in the presence of IFN-gamma only or with other cytokines, HLA-C, E transcripts were not significantly affected. CONCLUSION: These results suggest that harmful IFN-gamma to maintain early pregnancy may affect through another mechanism besides regulation of HLA-C, E on the extravillous cytotrophoblasts at the feto-maternal interface. |
| Key Words:
Trophoblast, Human Leukocyte Antigen, Interferon-gamma |
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