Changes in expression of ISG15, progesterone receptor and progesterone-induced blocking factor in ovine thymus during early pregnancy

Theriogenology
Leying ZhangLing Yang

Abstract

Interferon-tau (IFNT) is the main signal for the maternal recognition of pregnancy in ruminants, and exerts its effects by stimulating the expression of interferon-stimulated genes, including the expression of interferon-stimulated gene15 kDa protein (ISG15). Progesterone (P4) exerts significant immune effects on the uterus during early pregnancy in ruminants that are partly mediated by progesterone-induced blocking factor (PIBF). The thymus is necessary for the normal development of immunologic function. In this study, thymuses were obtained on day 16 of the estrous cycle and on days 13, 16 and 25 of pregnancy (n = 6 for each group) from ewes. Our results showed that the expression of ISG15, P4 receptor (PGR) and PIBF mRNA and the expression of ISG15 and ISG15-conjugated proteins were upregulated in the thymuses during early pregnancy, and the 89-kDa PGR isoform and the 80-kDa PIBF variant were expressed constantly in the thymuses. However, there was no expression of the 60-kDa PGR isoform and the 62-kDa PIBF variant on day 16 of the estrous cycle. ISG15 and ISG15-conjugated proteins were limited to the epithelial reticular cells, capillaries and thymic corpuscles. This paper reports for the first time that early pregnancy exe...Continue Reading

Citations

Apr 25, 2020·Animal Science Journal = Nihon Chikusan Gakkaihō·Ling YangYujiao Wang
Nov 2, 2019·Animals : an Open Access Journal From MDPI·Yujiao WangLing Yang
May 19, 2019·Animals : an Open Access Journal From MDPI·Leying ZhangLing Yang
Mar 18, 2021·Animal Science Journal = Nihon Chikusan Gakkaihō·Jiaxuan WuLing Yang
Sep 25, 2021·Veterinary Research Communications·Leying ZhangLing Yang
Jan 25, 2022·Experimental and Therapeutic Medicine·Leying ZhangLing Yang

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