Project description:Maternal exposure to estrogens can induce long-term adverse effects in the offspring. This may be mediated through alterations in the endometrium affecting embryo-maternal communication as early as the preimplantational phase. Thus, we analyzed the effects of gestational estradiol-17β (E2) exposure on the endometrium. Two distinct low doses and a high dose (0.05, 10 and 1000 µg E2/kg body weight daily, respectively) were orally applied to sows from insemination until sampling at day 10 of pregnancy and compared to carrier-treated controls. RNA-sequencing revealed a dose-dependent increase of 14, 17 and 27 differentially expressed genes (DEG), respectively. Overall, the maternal E2 treatment perturbed gene expression of the endometrium, potentially altering the uterine histotroph.
Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig
Project description:Environmental estrogens may affect epigenetic programming as early as the period of preimplantation development. Therefore, we analyzed the effects of continuous gestational estradiol-17β (E2) exposure on male and female embryos. A low dose, close to the no-observed effect level (NOEL - 10 µg E2/kg body weight(bw)/d), a high dose (1000 µg E2/kg bw/d) and carrier only, as control group, was fed to sows from insemination until sampling at day 10 of pregnancy, respectively. 36 samples (n = 5-7 per treatment group and sex) were analyzed by high throughput sequencing.In the high dose group, RNA-sequencing of single embryos revealed 982 differentially expressed genes (DEG) in the female but none in the male blastocysts. Moreover, 62 and 3 DEG were found in female and male embryos of the NOEL dose group, respectively. Thus, maternal E2 treatment during early pregnancy affected gene expression of the embryos at day 10, potentially constituting the basis for long-term adverse effects.
Project description:Large White and Meishan pigs were either non-treated or injected with mammalian 1-24 ACTH (Immediate Synachten, Novartis France) at the dose of 250 µg per animal. Pigs were sacrificed either immediately after capture from their home cage (non-treated animals) or 1 hour following ACTH injection. Adrenal glands were immediately collected from pigs and frozen on dry ice and then stored at -80°C until RNA isolation. Keywords: stress response, adrenal, gene expression, pig 47 samples
Project description:To obtain an overview of the transcriptome landscape in developing pig skeletal muscle, 81 high-quality transcriptome libraries that covered 27 developmental stages (3 biological replicates per stage) in pig skeletal muscle were produced by strand-specific rRNA-depleted total RNA sequencing (RNA-seq). We generated 8.59 billion paired-end reads (150 bp × 2) covering 1.24 Tb of sequence for RNA-seq.
Project description:Impact of maternal diet supplemented with selenium (Se) and vitamin B6 during pregnancy on gene expression of porcine expanded blastocysts (EB)