Follicle stimulating hormone (FSH) and epidermal growth factor (EGF) are currently used on cumulus-oocyte complexes to mimic the luteinizing hormone surge in vitro and induce oocyte maturation and cumulus expansion. We have previously shown that addition of exogenous recombinant growth differentiation factor 9 (GDF9) during oocyte in vitro maturation led to an improvement of oocyte quality, as shown by an increased blastocyst percentage and fetal survival.
No associated publication
Sex, Age, Specimen part
View SamplesRNA sequencing of epithelial and fiber cells from newborn mouse lenses
No associated publication
No sample metadata fields
View SamplesA timecourse assessment of the response of ZR-75-1 breast cancer cells to progestogens in cells pretreated with estrogen. P4 treatment in cells pretreated with E2 results in a unique transcriptional response, including upregulation of ErbB growth factor pathways and alteration of the intrinsic subtype of the breast cancer cells.
No associated publication
Specimen part, Cell line, Treatment, Time
View SamplesOur understanding of the mechanisms that govern the cellular process of meiosis is limited in higher plants with polyploid genomes. Bread wheat is an allohexaploid that behaves as a diploid during meiosis. Chromosome pairing is restricted to homologous chromosomes despite the presence of homoeologues in the nucleus. The importance of wheat as a crop and the extensive use of wild wheat relatives in breeding programs has prompted many years of cytogenetic and genetic research to develop an understanding of the control of chromosome pairing and recombination. The rapid advance of biochemical and molecular information on meiosis in model organisms such as yeast provides new opportunities to investigate the molecular basis of chromosome pairing control in wheat. However, building the link between the model and wheat requires points of data contact. We report here a large-scale transcriptomics study using the Affymetrix wheat GeneChip aimed at providing this link between wheat and model systems and at identifying early meiotic genes. Analysis of the microarray data identified 1,350 transcripts temporally-regulated during the early stages of meiosis. Expression profiles with annotated transcript functions including chromatin condensation, synaptonemal complex formation,recombination and fertility were identified. From the 1,350 transcripts, 30 displayed at least an eight-fold expression change between and including pre-meiosis and telophase II, with more than 50% of these having no similarities to known sequences in NCBI and TIGR databases. This resource is now available to support research into the molecular basis of pairing and recombination control in the complex polyploid, wheat.
Microarray expression analysis of meiosis and microsporogenesis in hexaploid bread wheat.
Specimen part
View SamplesIdentifying the effect of the co-regulator Hic-5 (TGFB1I1) and TGFB on the transcriptional profile of WPMY human prostate fibroblast cells with view to further elucidating the broader biological role of Hic-5 and TGFB on fibroblast.
VDR activity is differentially affected by Hic-5 in prostate cancer and stromal cells.
Specimen part, Cell line, Treatment
View SamplesThe ovary has specialized stromal compartments, including the tunica albuginea, interstitial stroma and theca interna, which develops concurrently with the follicular antrum. To characterize the molecular determinants of these compartments, stroma adjacent to preantral follicles (pre-theca), interstitium and tunica albuginea were laser microdissected (n = 4 per group) and theca interna was dissected from bovine antral follicles (n = 6).
Transcriptome analyses of ovarian stroma: tunica albuginea, interstitium and theca interna.
Specimen part
View SamplesMedroxyprogesterone acetate (MPA) is a progestin that can bind to and activate progesterone, androgen and glucocorticoid receptors. However, it is not known which receptor mediates MPA action in a cellular context where all three of these receptors are co-expressed and functional.
Anti-proliferative transcriptional effects of medroxyprogesterone acetate in estrogen receptor positive breast cancer cells are predominantly mediated by the progesterone receptor.
Cell line, Treatment
View SamplesIdentifying the effect of the co-regulator Hic-5 (TGFB1I1) on global androgen receptor transcriptional activity in PShTert-AR prostate fibroblast cells with view to further elucidating the broader biological role of Hic-5 on fibroblast spceific androgen signaling.
No associated publication
Specimen part
View SamplesMaternal IL10 deficiency elevates susceptibility to fetal loss induced by the model Toll-like receptor agonist lipopolysaccharide, but the mechanisms are not well elucidated. Here we show that Il10 null mutant (Il10-/-) mice exhibit altered local T cell responses in pregnancy, exhibiting pronounced hyperplasia in para-aortic lymph nodes draining the uterus with >6-fold increased CD4+ and CD8+ T cells compared with wild-type controls. Amongst these CD4+ cells, Foxp3+ Treg cells were substantially enriched, with 11-fold higher numbers at day 9.5 post coitum (pc). Lymph node hypertrophy in Il10-/- mice was associated with more activated phenotypes in dendritic cells and macrophages, with elevated expression of MHCII, scavenger receptor and CD80. Affymetrix microarray revealed an altered transcriptional profile in Treg cells from pregnant Il10-/- mice, with elevated expression of Ctse (cathepsin E), Il1r1, Il12rb2 and Ifng. In vitro, Il10-/- Treg cells showed reduced steady state Foxp3 expression, and polyclonal stimulation caused greater loss of Foxp3 and reduced capacity to suppress IL17 in CD4+Foxp3- T cells. We conclude that despite a substantially expanded Treg cell pool, diminished stability of Treg cells, increased numbers of effector T cells, and altered phenotypes in dendritic cells and macrophages in pregnancy all potentially confer vulnerability to inflammation-induced fetal loss in Il10-/- mice. These findings suggest a pivotal role for IL10 in facilitating robust immune protection of the fetus from inflammatory challenge and suggest IL10 deficiency could contribute to human gestational disorders where altered T cell responses are implicated.
Unstable Foxp3+ regulatory T cells and altered dendritic cells are associated with lipopolysaccharide-induced fetal loss in pregnant interleukin 10-deficient mice.
Specimen part
View SamplesTo examine the effect of seminal fluid on the whole genome expression profile of endometrial tissue following mating, RNA was extracted from endometrial tissue collected 8 h after CBAF1 females were mated with intact Balb/c males and compared to RNA from endometrial tissue of females mated with seminal fluid deficient SVX/VAS Balb/c males. This comparison controlled for ovarian hormone status, exposure to the male and mating activity, and the neuroendocrine response to cervical and vaginal stimulus at mating, so that changes in endometrial gene expression could be attributed specifically to contact with seminal fluid. The endometrial RNA from n=16 individual females was pooled into four independent biological replicates per treatment group (n=4 endometrial samples per replicate) and expression profiles were analyzed by Affymetrix microarray. Seminal fluid exposure induced a clear difference in the profile of genes expressed in the endometrium with a total of 335 genes were differentially regulated with a fold-change greater than 1.5 and p<0.05. Of these, 190 genes were upregulated and 145 genes were downregulated following contact with seminal fluid. Bioinformatics analysis revealed TLR4 signaling as a strongly predicted upstream regulator activated by the differentially expressed genes.Additional experiments confirmed the role of TLR4 with the absence of TLR4 in TLR4 null mice resulting in a failure for seminal fluid to induce endometrial Csf3, Cxcl2, Il6 and Tnf expression. This study provides evidence that TLR4 contributes to seminal fluid modulation of the periconception immune environment. Activation of TLR4 signaling by microbial or endogenous components of seminal fluid is thus implicated as a key element of the female tract response to seminal fluid at the outset of pregnancy in mice.
TLR4 Signaling Is a Major Mediator of the Female Tract Response to Seminal Fluid in Mice.
Sex, Specimen part, Time
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