Expression data from bovine corpus luteum treated with equine chorionic gonadotropin (eCG)
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ABSTRACT:
ORGANISM(S): Bos indicus Bos taurus
PROVIDER: GSE37844 | GEO | 2012/05/09
SECONDARY ACCESSION(S): PRJNA164685
REPOSITORIES: GEO
Similar Datasets
Project description:In order to indentify genes regulated by eCG, and involved in CL development and progesterone increases, the transcriptome was evaluated using the microarray technology Cows (Bos indicus) were divided into control, stimulated and superovulated groups. The stimulated group received 400 IU of eCG on day 8 and the superovulated group received 2000 IU of eCG on day 4 after the beginning of synchronization. Corpus luteum were collected at day 6 after ovulation e the trasncripitome was available by microarray.
2012-05-08 | E-GEOD-37844 | biostudies-arrayexpress
Project description:We hypothesized that stimulatory and superovulatory treatments, using equine chorionic gonadotropin (eCG), modulate the expression of genes related to insulin, cellular modelling and angiogenesis signaling pathways in the bovine corpus luteum (CL). Therefore, we investigated: 1-the effect of these treatments on circulating insulin and somatomedin C concentrations and on gene and protein expression of INSR, IGF1 and IGFR1, as well as other insulin signaling molecules; 2-the effects of eCG on gene and protein expression of INSR, IGF1, GLUT4 and NFKB1A in bovine luteal cells; and 3-the effect of stimulatory and superovulatory treatments on gene and protein expression of ANG, ANGPT1, NOS2, ADM, PRSS2, MMP9 and PLAU. Serum insulin did not differ among groups (P = 0.96). However, serum somatomedin C levels were higher in both stimulated and superovulated groups compared to the control (P = 0.01). In stimulated cows, lower expression of INSR mRNA and higher expression of NFKB1A mRNA and IGF1 protein were observed. In superovulated cows, lower INSR mRNA expression, but higher INSR protein expression and higher IGF1, IGFR1 and NFKB1A gene and protein expression were observed. Expression of angiogenesis and cellular modelling pathway-related factors were as follows: ANGPT1 and PLAU protein expression were higher and MMP9 gene and protein expression were lower in stimulated animals. In superovulated cows, ANGPT1 mRNA expression was higher and ANG mRNA expression was lower. PRSS2 gene and protein expression were lower in both stimulated and superovulated animals related to the control. In vitro, eCG stimulated luteal cells P4 production as well as INSR and GLUT4 protein expression. In summary, our results suggest that superovulatory treatment induced ovarian proliferative changes accompanied by increased expression of genes providing the CL more energy substrate, whereas stimulatory treatment increased lipogenic activity, angiogenesis and plasticity of the extracellular matrix (ECM).
| S-EPMC5053489 | biostudies-literature
Project description:To explore chorionic gonadotropin (CG)-regulated gene expression in the primate corpus luteum (CL), adult female rhesus macaques were treated with a model of simulated early pregnancy (SEP). Total RNA was isolated from individual CL and hybridized to Affymetrix™ GeneChip Rhesus Macaque Genome Arrays The level of 1192 transcripts changed expression > 2-fold (one-way ANOVA, FDR correction; P<0.05) during SEP when compared to Day 10 untreated controls, and the majority of changes occurred between Days 10 and 12 of SEP. To compare transcript levels between SEP rescued and regressing CL, previously banked rhesus GeneChip array data from the mid- to late and very late luteal phase were analyzed with time-matched intervals in SEP. Comparing RMA-normalized transcripts from the natural cycle with those from luteal rescue revealed 7677 transcripts changing in expression pattern >2 fold (one-way ANOVA, FDR correction; P<0.05) between the two groups. Clustering of samples revealed that the SEP samples possessed the most related transcript expression profiles. Regressed CL (days 18-19, around menses) were the most unlike all other CL. The most affected KEGG pathway was Steroid Biosynthesis, and most significantly absent pathways following SEP treatment includes groups of genes whose products promote cell-death. By further comparing the genome-wide changes in luteal gene expression during rescue in SEP, with those in CL during luteolysis in the natural menstrual cycle, it is possible to identify key regulatory pathways promoting fertility.
2011-11-21 | GSE25335 | GEO
Project description:To explore chorionic gonadotropin (CG)-regulated gene expression in the primate corpus luteum (CL), adult female rhesus macaques were treated with a model of simulated early pregnancy (SEP). Total RNA was isolated from individual CL and hybridized to AffymetrixM-bM-^DM-" GeneChip Rhesus Macaque Genome Arrays The level of 1192 transcripts changed expression > 2-fold (one-way ANOVA, FDR correction; P<0.05) during SEP when compared to Day 10 untreated controls, and the majority of changes occurred between Days 10 and 12 of SEP. To compare transcript levels between SEP rescued and regressing CL, previously banked rhesus GeneChip array data from the mid- to late and very late luteal phase were analyzed with time-matched intervals in SEP. Comparing RMA-normalized transcripts from the natural cycle with those from luteal rescue revealed 7677 transcripts changing in expression pattern >2 fold (one-way ANOVA, FDR correction; P<0.05) between the two groups. Clustering of samples revealed that the SEP samples possessed the most related transcript expression profiles. Regressed CL (days 18-19, around menses) were the most unlike all other CL. The most affected KEGG pathway was Steroid Biosynthesis, and most significantly absent pathways following SEP treatment includes groups of genes whose products promote cell-death. By further comparing the genome-wide changes in luteal gene expression during rescue in SEP, with those in CL during luteolysis in the natural menstrual cycle, it is possible to identify key regulatory pathways promoting fertility. Simulated early pregnancy (SEP) treatment was begun on day 9 as Duffy and Stouffer (1997) by treatment of females with recombinant human chorionic gonadotropin (hCG; NovarelM-bM-^DM-", Ferring Pharmaceuticals Inc. Parsippany, NJ, USA) in increasing dosages (15, 30,45,90,180,360,720,1440, and 2880 IU) twice daily by intramuscular injection. CL were collected by laparotomy on days 10, 12, 15, and 18, representing 1, 3, 6 and 9 days of hCG treatment (n=4 CL/day). Additionally, luteal day 10 untreated CL were collected to serve as baseline controls for SEP CL. All CL were dissected away from luteal tissue, sectioned, and snap-frozen in liquid nitrogen and stored at -80M-BM-0C until RNA and protein isolation by TRIzolM-BM-. extraction (Invitrogen, Carlsbad, CA, USA) according to manufacturerM-bM-^@M-^Ys protocols.
2011-11-21 | E-GEOD-25335 | biostudies-arrayexpress
Project description:Corpus luteum (CL) is an ephemeral gland whose main function is to secrete progesterone required for the establishment and maintenance of pregnancy. It is very well established that development and maintenance of CL function in primates requires action of luteinizing hormone (LH) but the extent and mechanism by which LH contributes to the maintenance of CL function through out the luteal phase is not known. To study the nuclear actions mediated by LH, we evaluated global genomic changes in CL of monkeys treated with GnRH receptor antagonist to inhibit pituitary LH secretion. Affymetrix microarray analysis was performed on RNA samples from CL obtained from VEH or CET treated monkeys. Results demonstrate that LH regulates expression of a number of genes which might be important for maintenance of CL structure and function. Keywords: CL, LH, CET, gene expression
2007-06-07 | GSE7827 | GEO
Project description:Corpus luteum (CL) is an ephemeral gland whose main function is to secrete progesterone required for the establishment and maintenance of pregnancy. It is very well established that development and maintenance of CL function in primates requires action of luteinizing hormone (LH) but the extent and mechanism by which LH contributes to the maintenance of CL function through out the luteal phase is not known. To study the nuclear actions mediated by LH, we evaluated global genomic changes in CL of monkeys treated with GnRH receptor antagonist to inhibit pituitary LH secretion. Affymetrix microarray analysis was performed on RNA samples from CL obtained from VEH or CET treated monkeys. Results demonstrate that LH regulates expression of a number of genes which might be important for maintenance of CL structure and function. Keywords: CL, LH, CET, gene expression A single s.c. injection of GnRH receptor antagonist, Cetrorelix (CET), administered at a dose of 150 µg/kg BW has been shown to induce luteolysis. For the purpose of microarray analysis, VEH (5.25% glucose) or CET (treatment) was injected to female monkeys on day 7 of luteal phase and CL collected at 24 h post treatment (n=3) was cut into small quarters and snap frozen in liquid nitrogen. To minimize between animal variations, CL for both VEH and CET treatments were collected from the same monkeys.
2010-06-11 | E-GEOD-7827 | biostudies-arrayexpress
Project description:Despite much investigation, mechanisms conferring stage specific responsiveness of the corpus luteum (CL) to prostaglandin F2 (PG) are unknown. The objective of this study was to identify PG- induced changes in transcriptome of bovine CL specific to d 11 ( PG responsive) but not d 4 (PG refractory) CL associated with luteolysis. CL were collected from heifers at 0, 4 and 24 h following PG injection on d 4 and 11 of the estrous cycle (n = 5 animals/treatment) and isolated RNA labeled and hybridized to Affymetrix GeneChip Bovine Genome Arrays. At 4 and 24 h post PG respectively, 221 (d 4) and 661 (d 11) and 248 (d 4) and 1419 (d 11) regulated genes were identified.
2010-07-31 | GSE23348 | GEO
Project description:Luteolysis of the corpus luteum (CL) during non-fertile cycles involves a cessation of progesterone (P4) synthesis (functional regression) and subsequent structural remodeling. The molecular processes responsible for initiation of luteal regression in the primate CL are poorly defined. Therefore, a genomic approach was utilized to systematically identify differentially expressed genes in the rhesus macaque CL during spontaneous luteolysis. CL were collected prior to (days 10-11 post-LH surge, mid-late [ML] stage) or during (days 14-16, late stage) functional regression. Based on P4 levels, late stage CL were subdivided into functional late (FL, serum P4 > 1.5 ng/ml) and functionally-regressed late (FRL, serum P4 < 0.5 ng/ml) groups (n=4 CL/group). Total RNA was isolated, labeled and hybridized to Affymetrix genome microarrays that contain elements representing the entire rhesus macaque transcriptome. With the ML stage serving as the baseline, there were 681 differentially expressed transcripts (>2-fold change; p< 0.05) that could be categorized into three primary patterns of expression: 1) increasing from ML through FRL, 2) decreasing from ML through FRL, and 3) increasing ML to FL, followed by a decrease in FRL. Ontology analysis revealed potential mechanisms and pathways associated with functional and/or structural regression of the macaque CL. Quantitative real-time PCR was used to validate microarray expression patterns of 13 genes with the results being consistent between the two methodologies. Protein levels were found to parallel mRNA profiles in 4 of 5 differentially expressed genes analyzed by Western blot. Thus, this database will facilitate the identification of mechanisms involved in primate luteal regression. Keywords: time course plus functional state of corpus luteum
2008-10-27 | GSE12807 | GEO
Project description:Despite much investigation, mechanisms conferring stage specific responsiveness of the corpus luteum (CL) to prostaglandin F2 (PG) are unknown. The objective of this study was to identify PG- induced changes in transcriptome of bovine CL specific to d 11 ( PG responsive) but not d 4 (PG refractory) CL associated with luteolysis. CL were collected from heifers at 0, 4 and 24 h following PG injection on d 4 and 11 of the estrous cycle (n = 5 animals/treatment) and isolated RNA labeled and hybridized to Affymetrix GeneChip Bovine Genome Arrays. At 4 and 24 h post PG respectively, 221 (d 4) and 661 (d 11) and 248 (d 4) and 1419 (d 11) regulated genes were identified. Thirty Angus crossbred heifers were assigned to one of six treatments (n = 5 per treatment) in a 2 x 3 factorial arrangment, using a completely random design.Corpora lutea were collected at 0 (control), 4 or 24 h following injection of saline (control) or PG on d 4 or d 11 of the estrous cycle. Total RNA was isolated from luteal tissue. The isolated RNA was labeled and hybridized to Affymetrix GeneChip Bovine Genome Arrays.
2010-07-31 | E-GEOD-23348 | biostudies-arrayexpress
Project description:Prostaglandin F2 alpha (PGF2alpha) brings about regression of the bovine corpus luteum (CL). This luteolytic property of PGF2alpha is used in the beef and dairy cattle to synchronize estrus. A limitation of this protocol is an insensitivity of the early CL to luteolytic actions of PGF2alpha. The mechanisms underlying luteal sensitivity (LS) are poorly understood. The early CL has maximum number of PGF2alpha receptors; therefore differences in signaling events might be responsible for LS. Hence differential gene expression at two developmental stages, days 4 (D-4) and 10 (D-10) post estrus, might account for differences in signal transduction pathways associated with LS. This possibility was examined in these studies. Microarray analysis (n=3 per stage) identified 167 genes that were differentially expressed (p<0.05). These were categorized into genes involved in cell signaling, steroidogenesis and metabolism, protein degradation, transcription regulation and DNA biosynthesis, protein biosynthesis and modification, extracellular matrix and cytoskeletal proteins, antioxidant property, miscellaneous, and unknown functions. Real-time PCR confirmed the differential expression of 9 randomly selected genes, including protein kinase C inhibitor protein-1 (KCIP-1) and regulator of G-protein signaling 2 (RGS2), observed in microarray. Further, the in vivo effect of exogenous PGF2alpha (n=3 per stage) on selected genes that were found differentially expressed during this developmental transition was examined. PGF2alpha increased the expression of a guanine nucleotide binding protein beta polypeptide 1 (GNB1) in D-4 CL and Ca2+/calmodulin dependent kinase kinase 2 beta (Camkk2) in D-10 CL. Therefore, GNB1, Camkk2, KCIP-1, and RGS2 are candidate genes that might play significant role in acquisition of luteal sensitivity to PGF2alpha. Keywords: Direct comparison between Day-4 and Day-10 CL, Developmental type comparision
2009-02-23 | GSE10662 | GEO