:Flutamide-induced alterations in transcriptional profiling of neonatal porcine ovaries论文

:Flutamide-induced alterations in transcriptional profiling of neonatal porcine ovaries论文

本文主要研究内容

作者(2019)在《Flutamide-induced alterations in transcriptional profiling of neonatal porcine ovaries》一文中研究指出:Background: Androgens are involved in the regulation of ovarian development during fetal/neonatal life.Environmental chemicals displaying anti-androgenic activities may affect multiple signal transduction pathways by blocking endogenous androgen action. The aim of the current study was to examine effects of the anti-androgen flutamide on the expression of coding transcripts and long non-coding RNAs(lncRNAs) in neonatal porcine ovaries.By employing RNA-Seq technology we aimed to extend our understanding of the role of androgens in neonatal folliculogenesis and examine the impact of the anti-androgen flutamide on ovarian function.Method: Piglets were subcutaneously injected with flutamide(50 mg/kg BW) or corn oil(controls) between postnatal days 1 and 10(n = 3/group). Ovaries were excised from the 11-day-old piglets and total cellular RNAs were isolated and sequenced.Results: Flutamide-treated piglet ovaries showed 280 differentially expressed genes(DEGs; P-adjusted < 0.05 and log2 fold change ≥1.0) and 98 differentially expressed lncRNAs(DELs; P-adjusted < 0.05 and log2 FC ≥ 1.0). The DEGs were assigned to GO term, covering biological processes, molecular functions and cellular components, which linked the DEGs to functions associated with cellular transport, cell divisions and cytoskeleton. In addition, STRING software demonstrated strongest interactions between genes related to cell proliferation. Correlations between DEGs and DELs were also found, revealing that a majority of the genes targeted by the flutamide-affected lncRNAs were associated with intracellular transport and cell division.Conclusions: Our results suggest that neonatal exposure of pigs to flutamide alters the expression of genes involved in ovarian cell proliferation, ovarian steroidogenesis and oocyte fertilization, which in turn may affect female reproduction in adult life.

Abstract

Background: Androgens are involved in the regulation of ovarian development during fetal/neonatal life.Environmental chemicals displaying anti-androgenic activities may affect multiple signal transduction pathways by blocking endogenous androgen action. The aim of the current study was to examine effects of the anti-androgen flutamide on the expression of coding transcripts and long non-coding RNAs(lncRNAs) in neonatal porcine ovaries.By employing RNA-Seq technology we aimed to extend our understanding of the role of androgens in neonatal folliculogenesis and examine the impact of the anti-androgen flutamide on ovarian function.Method: Piglets were subcutaneously injected with flutamide(50 mg/kg BW) or corn oil(controls) between postnatal days 1 and 10(n = 3/group). Ovaries were excised from the 11-day-old piglets and total cellular RNAs were isolated and sequenced.Results: Flutamide-treated piglet ovaries showed 280 differentially expressed genes(DEGs; P-adjusted < 0.05 and log2 fold change ≥1.0) and 98 differentially expressed lncRNAs(DELs; P-adjusted < 0.05 and log2 FC ≥ 1.0). The DEGs were assigned to GO term, covering biological processes, molecular functions and cellular components, which linked the DEGs to functions associated with cellular transport, cell divisions and cytoskeleton. In addition, STRING software demonstrated strongest interactions between genes related to cell proliferation. Correlations between DEGs and DELs were also found, revealing that a majority of the genes targeted by the flutamide-affected lncRNAs were associated with intracellular transport and cell division.Conclusions: Our results suggest that neonatal exposure of pigs to flutamide alters the expression of genes involved in ovarian cell proliferation, ovarian steroidogenesis and oocyte fertilization, which in turn may affect female reproduction in adult life.

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