Insufficient peroxiredoxin-2 expression in uterine NK cells obtained from a murine model of abortion
✍ Scribed by Guangjie Yin; Cui Li; Bin Shan; Wenjing Wang; Hong Chen; Yanmin Zhong; Jingfang Di; Qide Lin; Yi Lin
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 377 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0730-2312
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✦ Synopsis
Abstract
The CBA/J × DBA/2 mouse mating combination is prone to spontaneous embryo loss, in contrast to the MHC‐identical CBA/J × BALB/c mating combination, which yields successful pregnancies. The underlying mechanisms for these observations are unclear. In this study, multi‐vision immunohistochemical staining (IHC), flow cytometry and Western blot analysis were used to detect peroxiredoxin‐2 (PRX‐2) expression in the uterine natural killer (uNK) cells from CBA/J × DBA/2 and CBA/J × BALB/c mice. In IHC analysis, co‐localization of PRX‐2 and lectin from Dolichos biflorus agglutinin (DBA‐lectin) was confirmed and the frequency of PRX‐2^+^DBA‐lectin^+^ cells was significantly lower in CBA/J × DBA/2 than CBA/J × BALB/c. In flow cytometry and Western blotting, PRX‐2 was found expressed at a significantly lower level in CBA/J × DBA/2 mice. PRX‐2 inhibition with a neutralizing antibody significantly decreased PRX‐2 expression, increased the cytotoxicity of uNK cells, and increased the percentage of embryo loss in CBA/J × DBA/2J mice. Our data suggest that PRX‐2 may be involved in the modulation of maternal–fetal tolerance and that insufficient expression of this protein may correlate with increased embryo loss in CBA/J × DBA/2J mice. J. Cell. Biochem. 112: 773–781, 2011. © 2010 Wiley‐Liss, Inc.