Maternal molecular features and gene profiling of monocytes during first trimester pregnancy

We examined the molecular characteristics of monocytes of pregnant and non-pregnant women to investigate the molecular effects that are associated with immunoregulation at the maternal-fetal interface. We analyzed molecular features and target genes in monocytes of pregnant women using flow cytometry, real-time PCR and oligonucleotide microarray technology. CD14(high) monocytes and several immune gene members including CD200, CD200R, IDO, IFI27, IL-10 and G0S2 were found to be differentially expressed in monocytes throughout pregnancy. In addition, transcripts within components of the signaling cascade of immune cells (HLA-DRB4, HBEGF, IL-8, CD3D, CCL5), and of several transcription factors (SOCS1, CXCL10, ID1, ID2) were altered in the monocytes of pregnant women. Further studies will be needed to elucidate the biological significance of our observation. (C) 2013 Elsevier Ireland Ltd. All rights reserved.