The Journal of the Korea Contents Association (한국콘텐츠학회논문지)

The Korea Contents Association (한국콘텐츠학회)
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Expressions of MicroRNA-150 and MicroRNA-424 Targeted to C-reactive Protein in Trophoblast Cell Line

영양막세포에서의 C-reactive protein 조절 microRNA-150과 microRNA-424 발현 분석

  • 김희성 (단국대학교 의과대학 제일병원 진단검사의학과)
  • Received : 2019.09.09
  • Accepted : 2019.11.04
  • Published : 2019.11.28
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Abstract

Abnormalities of trophoblast due to early inflammation in pregnancy increase the expression of CRP and affect maternal-fetal interactions, leading to preterm birth and preeclampsia. However, biomarkers related to the regulation of CRP expression have not been found. In this study, miRNA associated with increased expression of CRP was identified and their expression was analyzed to reveal biomarkers involved in the regulation mechanism of trophoblast inflammation through miRNAs. miRNAs that were predicted to regulate CRP gene expression in miRNA databases (mirna, TargetScan, MicroCosm) were screened and HTR-8/SVneo cell lines were treated with LPS (20 ng/mL) to induce inflammatory responses in vitro, with selected miR-7, miR-150, miR-186 and miR-424. The expression was analyzed by qRT-PCR. As a result, expression of CRP was significantly increased in LPS-treated trophoblast (p<0.001) and miR-150 and miR-424 expression were significantly decreased (p<0.001). Thus, miR-150 and miR-424 are involved in the regulation of CRP expression in inflammatory-induced trophoblast and may be useful for the prenatal diagnosis of inflammatory obstetric diseases.

임신 초기 염증으로 인한 영양막세포의 기능 이상은 C-reactive protein (CRP)의 발현을 증가시켜 산모와 태아의 상호작용에 영향을 미침으로써, 조산 및 자간전증 등을 유발한다. 그러나, CRP 발현 조절과 관련된 생체표지자 발굴 및 개발은 미흡한 실정이다. 본 연구는 염증이 유발된 영양막세포에서 증가된 CRP 발현과 관련된 miRNA를 발굴 및 그 발현을 분석함으로써, miRNA를 통해 영양막세포 염증 조절 기전에 관여하는 생체표지자를 밝히고자 한다. miRNA 데이터베이스(mirna, TargetScan, MicroCosm)에서 공통적으로 CRP 유전자 발현을 조절할 것으로 예측되는 miR-7, miR-150, miR-186, 그리고 miR-424를 선별하여 HTR-8/SVneo에 LPS (20ng/mL)를 처리하여 in vitro 상에서 염증 반응을 유도하였다. 각각의 miRNAs의 발현을 qRT-PCR 방법으로 비교 분석하였다. 그 결과, LPS 처리된 영양막세포에서 CRP의 발현은 유의성 있게 증가되었다(p<0.001). miR-150와 miR-424는 발현이 유의성 있게 감소됨을 확인하였다(p<0.001). 따라서, 염증이 유도된 영양막세포에서의 CRP 발현을 조절하는 기전에 miR-150와 miR-424가 관여하는 것을 의미하며, 향후 염증성 산과질환의 산전 진단에 유용한 자료로 사용될 것으로 사료된다.

Keywords

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