Gene expression patterns associated with human placental trophoblast differentiation

Clin Chim Acta. 2019 Aug:495:637-645. doi: 10.1016/j.cca.2018.01.012. Epub 2018 Jan 10.

Abstract

Cell fusion is a hallmark of placental trophoblast cell differentiation and the mature syncytiotrophoblasts play essential roles for fetal-maternal exchange and production of pregnancy-related hormones. Using a well-established in vitro trophoblast differentiation model, we performed a microarray analysis on mRNA expression in trophoblast and syncytiotrophoblast cell cultures. Dramatic changes in gene expression patterns were detected during trophoblast differentiation. Real-time PCR analysis confirmed the reliability of the microarray data. As many as 3524 novel and known genes have been found to be up- or down-regulated for >2-fold. A number of cell cycle regulator including CDC6, CDC20, Cyclins B2, L1 and E2, were down-regulated in the syncytiotrophoblast, providing a mechanism for the loss of mitotic activity during trophoblast differentiation. Further characterization on the identified genes may lead to better understanding of placental patho-physiology in obstetric diseases such as preeclampsia.

Keywords: Cell fusion; Placental trophoblast; Syncytiotrophoblast; cDNA microarray.

MeSH terms

  • Cell Differentiation / genetics*
  • Female
  • Gene Expression Profiling*
  • Humans
  • Oligonucleotide Array Sequence Analysis
  • Pregnancy
  • Trophoblasts / cytology*
  • Trophoblasts / metabolism*