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[The study of human pregnancy specific β1-glycoprotein immunomodulating effects].

Authors
  • Zamorina, S A
  • Raev, M B
Type
Published Article
Journal
Fiziologiia cheloveka
Publication Date
Jan 01, 2015
Volume
41
Issue
1
Pages
117–123
Identifiers
PMID: 25857185
Source
Medline
License
Unknown

Abstract

Effect of human Pregnancy specific β1-glycoprotein (PSG) in physiological concentrations was analyzed against the expression of natural killer (NK)-, T-cells with natural killer functions (N KT-) and T-regulatory lymphocyte (Treg) markers, as well as on the activity of monocyte indolamine-2,3-dioxygenase (IDO) and lymphocyte apoptosis in vitro. It was revealed that PSG in high concentration (100 μg/mL) suppressed the CD16/56 expression by NK-cells, while inhibiting the cytolytic activity of these cells. Meanwhile, PSG in low concentrations (1 and 10 μg/mL) enhanced the CD16/56 expression by NKT-cells that was related to cytokine-producing activity. It was found that PSG increased the number of adaptive Tregs in culture (CD4+FOXP3+ and CD4+CD25(bright)FOXP3+). In addition, PSG promoted the IDO activity in peripheral monocytes, while further potentiating the Treg generation. In general, PSG rendered anti-apoptotic action on lymphocytes. Therefore, indicated effects can determine the PSG contribution to the development of immune tolerance in pregnancy.

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