Evaluating the IL-6 Family of Cytokines Throughout Equine Gestation.
Abstract: The interleukin (IL)-6 family of cytokines is grouped by a common receptor subunit (gp130), but functions in distinct but overlapping physiological activities, including regulation of acute phase reaction and the balance between effector and regulatory T cell populations-both of which play a role in successful pregnancy maturation. Methods: Here, we aim to assess the expression profiles of members of the IL-6 cytokine family throughout equine gestation. To do so, RNA Sequencing was performed on chorioallantois and endometrium of mares at 120, 180, 300, and 330 days of gestation (n = 4/stage), as well as 45-day chorioallantois (n = 4) and diestrus endometrium (n = 3). Expression levels of members of the IL-6 cytokine family including ciliary neurotrophic factor (CNTF), cardiotrophin 1 (CT-1), cardiotrophin-like cytokine factor 1 (CLCF1), galectin-10, oncostatin M (OSM), and IL-6, -11, and -27 were evaluated in addition to the receptors for IL-6 (IL-6R) and the common receptor subunit gp130. Additionally, peripheral concentration of IL-6 was assessed. Results: In the chorioallantois, differential expression of IL-6, IL-11, CNTF, CLCF1, OSM, and CT-1 was noted. In the endometrium, the gestational age of pregnancy impacted the expression of IL-11, CNTF, and CT-1. Circulatory IL-6 concentrations reached their highest concentrations at 120 days, with lesser concentrations noted at 45, 180, 300, and 330 days. Both IL-6R and gp130 altered in expression throughout equine gestation. Conclusions: In conclusion, members of the IL-6 cytokine family appear to fluctuate constantly throughout equine pregnancy, with varying expression profiles noted when comparing individual members. Additionally, different expression profiles were noted when comparing chorioallantois, endometrium, and circulation, indicating that the function of the cytokine is tissue-specific.
© 2024 The Author(s). American Journal of Reproductive Immunology published by John Wiley & Sons Ltd.
Publication Date: 2024-07-29 PubMed ID: 39072818DOI: 10.1111/aji.13910Google Scholar: Lookup
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Summary
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The research paper discusses the study conducted on the expression profiles of the IL-6 cytokine family throughout equine gestation. The researched noted that different members of the IL-6 cytokine family fluctuated throughout the equine pregnancy, and varied in expression when comparing individual cytokines and when comparing different tissues.
Objective of the Research
- The main objective of the research was to assess the expression profiles of the interleukin (IL)-6 family of cytokines throughout the gestation period in horses. This family includes ciliary neurotrophic factor (CNTF), cardiotrophin 1 (CT-1), cardiotrophin-like cytokine factor 1 (CLCF1), galectin-10, oncostatin M (OSM), and IL-6, -11, and -27. The study also aimed to measure the levels of IL-6 in the blood throughout the gestation period.
Methods Used
- To achieve this objective, the researchers performed RNA Sequencing on chorioallantois and endometrium of mares at various stages of gestation, specifically at 120, 180, 300, and 330 days of gestation. The same procedure was done on 45-day chorioallantois and diestrus endometrium.
- They then evaluated the expression levels of members of the IL-6 cytokine family mentioned above, along with the receptors for IL-6 (IL-6R) and the common receptor subunit gp130.
Results
- The researchers found differential expressions of IL-6, IL-11, CNTF, CLCF1, OSM, and CT-1 in the chorioallantois. Similarly, they noted that the gestational age impacted the expression of IL-11, CNTF, and CT-1 in the endometrium.
- On measuring the concentration of IL-6 in the blood, the team found that the levels peaked at 120 days of gestation, and were lesser at other days of gestation.
- They also found that both IL-6R and gp130 altered in their expression throughout the gestation period in horses.
Conclusions
- The researchers concluded that members of the IL-6 cytokine family are constantly fluctuating throughout horse pregnancy. This fluctuation was found to vary not only among the different members of the family but also when comparing different tissues where the cytokine functions.
Cite This Article
APA
Fedorka CE, Scoggin KE, El-Sheikh Ali H, Troedsson MHT.
(2024).
Evaluating the IL-6 Family of Cytokines Throughout Equine Gestation.
Am J Reprod Immunol, 92(1), e13910.
https://doi.org/10.1111/aji.13910 Publication
Researcher Affiliations
- Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, USA.
- Department of Veterinary Sciences, University of Kentucky, Lexington, Kentucky, USA.
- Department of Veterinary Sciences, University of Kentucky, Lexington, Kentucky, USA.
- Department of Veterinary Sciences, University of Kentucky, Lexington, Kentucky, USA.
MeSH Terms
- Animals
- Horses / immunology
- Female
- Pregnancy
- Interleukin-6 / metabolism
- Cytokines / metabolism
- Endometrium / metabolism
- Endometrium / immunology
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