Seminal fluid interferon-gamma: a potential inhibitor of reproductive success

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This project aims to investigate mechanisms by which infection, heat stress and psycho-social stress interfere with fertility by inducing a signalling factor in seminal fluid that suppresses female immune adaptation for pregnancy. Factors in seminal fluid in addition to sperm parameters are known to affect male reproductive success, but these are not well defined. The cytokine interferon-gamma (IFNG) is variably present in seminal plasma of several mammalian species. It was recently discovered that IFNG interferes with the female immune response required for reproductive success. This project will investigate how seminal fluid IFNG alters female immune adaptation for pregnancy. This will define how environmental factors induce seminal fluid IFNG and determine whether inhibitory effects of IFNG can be overcome with pharmacological inhibitors to boost reproductive success.