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Early transcriptome responses of the bovine midcycle corpus luteum to prostaglandin F2α includes cytokine signaling

Heather Talbott, Xiaoying Hou, Fang Qiu, Pan Zhang, Chittibabu Guda, Fang Yu, Robert A. Cushman, Jennifer R. Wood, Cheng Wang, Andrea S. Cupp, John S. Davis
Molecular and Cellular Endocrinology 2017 v.452 no. pp. 93-109
biochemical pathways, bioinformatics, corpus luteum, cows, cytokines, data collection, estrous cycle, gene expression, genes, inflammation, luteolysis, messenger RNA, mitogen-activated protein kinase, prediction, prostaglandins, protein kinase C, signal transduction, transcription factor NF-kappa B, transcriptome
In ruminants, prostaglandin F2alpha (PGF2a)-mediated luteolysis is essential prior to estrous cycle resumption, and is a target for improving fertility. To deduce early PGF2a-provoked changes in the corpus luteum a short time-course (0.5–4 h) was performed on cows at midcycle. A microarray-determined transcriptome was established and examined by bioinformatic pathway analysis. Classic PGF2a effects were evident by changes in early response genes (FOS, JUN, ATF3) and prediction of active pathways (PKC, MAPK). Several cytokine transcripts were elevated and NF-kappaB and STAT activation were predicted by pathway analysis. Self-organizing map analysis grouped differentially expressed transcripts into ten mRNA expression patterns indicative of temporal signaling cascades. Comparison with two analogous datasets revealed a conserved group of 124 transcripts similarly altered by PGF2a treatment, which both, directly and indirectly, indicated cytokine activation. Elevated levels of cytokine transcripts after PGF2a and predicted activation of cytokine pathways implicate inflammatory reactions early in PGF2a-mediated luteolysis.