Journal
ANIMAL REPRODUCTION SCIENCE
Volume 100, Issue 3-4, Pages 301-310Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.anireprosci.2006.08.016
Keywords
murine; uterus; cytokine; immunology; estrus
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Cytokines govern uterine immunology and embryo receptivity and are increasingly recognized for their embryotrophic roles. While supplementing culture media with cytokines may improve embryo development/viability in vitro, little is known about their physiological profiles in vivo, and hence which are likely to be uterine immunoregulators and embryotrophins. Therefore, this study profiled 23 cytokines in uterine fluid and serum from individual naturally cycling estrous mice. Samples were analyzed by fluid-phase multiplex immunoassays for interleukin (IL)-1 alpha, IL-1 beta, IL-2, IL-3, IL-4, IL-5, IL-6, IL-10, IL-12 (p40), IL-12 (p70) IL-13, IL-17, eotaxin, granulocyte-colony stimulating factor (G-CSF), granulocyte macrophagecolony stimulating factor (GM-CSF), interferon (IFN)-gamma, keratinocyte-derived chemokine (KC), monocyte chemoattractant protein (MCP)-1, macrophage inflammatory protein (MIP)-1 alpha MIP)-1 beta regulated upon activation, normal T-cell expressed and secreted (RANTES) and tumor necrosis factor (TNF)-alpha. There was a marked divergence in cytokine concentrations between uterine fluid and serum. The former was dominated by G-CSF, eotaxin, KC and IL-1 alpha, and had significantly higher levels of IL-1 beta, IL-2, IL-3, IL-4, IL-6, IL-9, GM-CSF, MIP-1 alpha, MIP-1 beta and RANTES. Serum had significantly higher IL-12 (p40), IL-12 (p70), IL-17 and IFN-gamma concentrations. No significant differences in IL-5, IL-10, IL-13, MCP-1 or TNF-alpha profiles were noted. These data indicated a strict compartmentalization of uterine cytokines, with G-CSF as a major cytokine at estrous. Results are discussed with respect to immune cell function, post-coital paternal antigen processing, estrous cyclicity, and endometrial angiogenesis, cell turnover and differentiation. (c) 2006 Elsevier B.V. All rights reserved.
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