Effect of androgen; gonad- and androgen receptor on gene expression in mouse kidney and liver
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE225622 | GEO | 2023/06/07
REPOSITORIES: GEO
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Project description:We report the in vivo androgen receptor (AR) binding sites in murine prostate, epididymis and kidney in response to physiological androgen testosterone using ChIP-sequencing and gene expression profiling by microarray. From AR cistrome analysis, we identified tissue-specific collaborating factors i.e. FoxA1 in prostate, Hnf4a in kidney and AP2a in epididymis and validated by ChIP-seq. The ChIP experiments have been performed using antibodies specific to AR, FoxA1, Hnf4a, AP-2a and IgG non-specific antibody as a negative control. Expression profiling by microarray of mouse androgen responsive tissues, prostate, kidney and epididymis castrated and treated with vehicle or testosterone for 3 days or 12 or 24 hours after single testosterone-injection.
2014-01-21 | E-GEOD-47181 | biostudies-arrayexpress
Project description:Androgen receptor (AR) is reactivated in castration resistant prostate cancer (CRPC) through mechanisms including marked increases in AR gene expression. We identify an enhancer in the AR second intron contributing to increased AR expression at low androgen levels in CRPC. Moreover, at increased androgen levels the AR binds this site and represses AR gene expression through recruitment of lysine specific demethylase 1 (LSD1) and H3K4me1,2 demethylation. AR similarly represses expression of multiple genes mediating androgen synthesis, DNA synthesis and proliferation, while stimulating genes mediating lipid and protein biosynthesis. Androgen levels in CRPC appear adequate to stimulate AR activity on enhancer elements, but not on suppressor elements, resulting in increased expression of AR and AR repressed genes that contribute to cellular proliferation. Custom Agilent 44K whole human genome expression oligonucleotide microarrays were used to profile pre-castrated androgen dependent, 4d-post-castrated, and relapsed castration resistant VCaP xenograft tumors in 3 mice. Total RNA was isolated and amplified prior to hybridization against a common reference pool of prostate tumor cell lines.
2011-08-15 | E-GEOD-31410 | biostudies-arrayexpress
Project description:We report the in vivo androgen receptor (AR) binding sites in murine prostate, epididymis and kidney in response to physiological androgen testosterone using ChIP-sequencing and gene expression profiling by microarray. From AR cistrome analysis, we identified tissue-specific collaborating factors i.e. FoxA1 in prostate, Hnf4a in kidney and AP2a in epididymis and validated by ChIP-seq. The ChIP experiments have been performed using antibodies specific to AR, FoxA1, Hnf4a, AP-2a and IgG non-specific antibody as a negative control. Examination of AR binding sites in murine androgen-responsive tissues prostate, epididymis and kidney using ChIP-seq. Further analysis of AR cistromes led to identification of tissue-specific collaborating factors and these collaborating factors are validated by ChIP-seq from the same tissues. Two parallel IgG samples were sequenced, merged together and used as a control data set. Parallel ChIP-seq samples were sequenced and merged for each replicate wherever required to contain approximately the same amount of reads across all tissues and conditions. All ChIP-seq experiments are performed in biological duplicates except for the castrated conditions.
2014-01-21 | E-GEOD-47192 | biostudies-arrayexpress
Project description:Spermatogenesis is dependent primarily on testosterone action on the Sertoli cells. Although the identification of testosterone-regulated target genes in Sertoli cells has been approached using microarray analysis to compare gene expression in mice with androgen receptor (AR) elimination in the Sertoli cells (SCARKO) and wild type mice, the analysis has been complicated by alteration of germ cell composition of the testis when pubertal or adult mice were used and differences in Sertoli-cell gene expression from those in adult when prepubertal mice were used. Since the testicular cell components of adult jsd (Utp14bjsd ,juvenile spermatogonial depletion) mice and SCARKO-jsd mice are essentially identical, consisting of only type A spermatogonia and somatic cells, comparisons of gene expression profiles between jsd and SCARKO-jsd testes would identify AR regulated genes in adult Sertoli cells, with minimum effects of cell number changes. Microarray analysis identified 161 genes as downregulated and 202 genes as upregulated in the SCARKO-jsd mice compared to jsd mice. Some of the genes identified in the previous studies, including Rhox5, Drd4, and Fhod3, were also AR-regulated in the jsd testes but others, such as proteases and components of junctional complexes, were not androgen regulated in our model. Surprisingly, a set of germ-cell-specific genes preferentially expressed in differentiated spermatogonia and meiotic cells, including Meig1, Sycp3, and Ddx4, were all upregulated about 2-fold in SCARKO-jsd testes, demonstrating that, although there was no significant differentiation to spermatocytes in SCARKO-jsd mice, AR-regulated genes in Sertoli cells are involved in the regulation of spermatogonial differentiation. Further gene ontogeny analysis revealed possible sets of genes whose expression changes may be involved in the disruption of Sertoli cell organization in SCARKO-jsd testes. Comparisons of gene expression profiles between the testis of jsd mice (n=3) and SCARKO-jsd mice (n=3).
2010-09-06 | E-GEOD-20918 | biostudies-arrayexpress
Project description:To investigate gene expression profiling in intact human prostate tissue xenografts in mice, following the addition or subtraction of androgens. 58 prostate samples were implanted into castrated or testosterone-treated mice for 5 different lengths of time. Samples were compared to a control pool created by combining day zero tissue samples from all patients
2010-06-14 | E-GEOD-17862 | biostudies-arrayexpress
Project description:Prostate cancer (PCa) is the most frequently diagnosed cancer in Canadian men and is the third cause of cancer mortality. PCa initiation and growth is driven by the androgen receptor (AR). AR is activated by androgens such as testosterone and controls prostatic cell proliferation and survival. We sought to characterize global AR signalling networks. We performed BioID proximity labeling proteomics in androgen-dependent LAPC4 cells to delineate AR protein interaction networks. We report the identification of 32 AR associated proteins in non-stimulated cells. Strikingly, the AR signalling network increased to 183 and 201 proteins, upon 24h or 72h androgenic stimulation, respectively. Among this group, we identified 215 proteins that were not previously reported as AR interactors. Interestingly, these AR associated proteins were previously reported to be involved in DNA metabolism, RNA processing and RNA polymerase II transcription. Moreover, we identified 44 transcription factors, such as the Krüppel-like factor 4 (KLF4), which was specifically revealed in androgen-stimulated cells. We determined that KLF4 acts as a repressor of AR target genes transcription in PCa cells. Taken together, our data report the largest high-confidence proximity networks for AR in PCa cells.
2021-03-01 | PXD011974 | Pride
Project description:The role of estrogen and testosterone in the regulation of gene expression in the proximal reproductive tract is not completely understood. To address this question, mice were treated with testosterone or estradiol and RNA from the efferent ducts and caput epididymis was processed and hybridized to Affymetrix MOE 430 2.0 microarrays. Analysis of array output identified probe sets in each tissue with altered levels in hormone treated versus control animals. Hormone treatment efficacy was confirmed by determination of serum hormone levels pre- and post-treatment and observed changes in transcript levels of previously reported hormone-responsive genes. Tissue-specific hormone sensitivity was observed with 2867 and 3197 probe sets changing significantly in the efferent ducts after estrogen and testosterone treatment, respectively. In the caput epididymis, 117 and 268 probe sets changed after estrogen and testosterone treatment, respectively, demonstrating a greater response to hormone in the efferent ducts than the caput epididymis. Transcripts sharing similar profiles in the intact and hormone-treated animals compared with castrated controls were also identified. Ontological analysis of probe sets revealed a significant number of hormone-regulated transcripts encode proteins associated with lipid metabolism, transcription and steroid metabolism in both tissues. Real-time RT-PCR was employed to confirm array data and investigate other potential hormone-responsive regulators of proximal reproductive tract function. The results of this work reveal previously unknown responses to estrogen in the caput epididymis and to testosterone in the efferent ducts as well as tissue specific hormone sensitivity in the proximal reproductive tract. Adult animals were castrated or sham-castrated, allowed to recover for 14 days, and then treated with 0.015 mg estradiol (castrated), 0.015 mg testosterone propionate (castrated), or vehicle (castrated and sham-castrated as biological controls) in duplicate. Efferent duct and caput epididymis was collected from each sample and analyzed. Duplicates are included in the provided data and numbered 1 or 2 for each treatment regimen.
2009-12-30 | E-GEOD-17553 | biostudies-arrayexpress
Project description:Spermatogenesis is dependent primarily on testosterone action on the Sertoli cells. Although the identification of testosterone-regulated target genes in Sertoli cells has been approached using microarray analysis to compare gene expression in mice with androgen receptor (AR) elimination in the Sertoli cells (SCARKO) and wild type mice, the analysis has been complicated by alteration of germ cell composition of the testis when pubertal or adult mice were used and differences in Sertoli-cell gene expression from those in adult when prepubertal mice were used. Since the testicular cell components of adult jsd (Utp14bjsd ,juvenile spermatogonial depletion) mice and SCARKO-jsd mice are essentially identical, consisting of only type A spermatogonia and somatic cells, comparisons of gene expression profiles between jsd and SCARKO-jsd testes would identify AR regulated genes in adult Sertoli cells, with minimum effects of cell number changes. Microarray analysis identified 161 genes as downregulated and 202 genes as upregulated in the SCARKO-jsd mice compared to jsd mice. Some of the genes identified in the previous studies, including Rhox5, Drd4, and Fhod3, were also AR-regulated in the jsd testes but others, such as proteases and components of junctional complexes, were not androgen regulated in our model. Surprisingly, a set of germ-cell-specific genes preferentially expressed in differentiated spermatogonia and meiotic cells, including Meig1, Sycp3, and Ddx4, were all upregulated about 2-fold in SCARKO-jsd testes, demonstrating that, although there was no significant differentiation to spermatocytes in SCARKO-jsd mice, AR-regulated genes in Sertoli cells are involved in the regulation of spermatogonial differentiation. Further gene ontogeny analysis revealed possible sets of genes whose expression changes may be involved in the disruption of Sertoli cell organization in SCARKO-jsd testes.
2010-09-06 | GSE20918 | GEO
Project description:Androgens are required for prostate development, growth and physiology, by activating the androgen receptor (AR) upon activation by testosterone and dihydrotestosterone (DHT), the AR undergoes conformational changes, dimerizes and translocates to the cell nucleus regulation important genes releted to cell survival. Understanding the mechanisms of androgen regulation in the prostate gland is important, because the prostate is affected by several different diseases, in particular prostate cancer (PCa). Several ways exist to treat prostate cancer and promote epithelial cell death. Treatments involving androgen manipulation include surgical castration (bilateral orchiectomy), antiandrogens (usually AR antagonists), or substances that inhibit androgen synthesis (5 alpha-reductase inhibitors, gonadotrophin-releasing hormone blockers). 17 beta-estradiol exerts anti-androgen effects by blocking the hypothalamic production of gonadotropin-releasing hormone and thereby inhibiting the production of testosterone by the testes , but also acts locally via interactions with either of the estrogen receptors found in the gland. It is known that the kinetics of apoptosis are different in the rat ventral prostate (VP) of castrated rats (Cas group) and in rats subjected to 17 beta-estradiol high dose (group E2) or their combination (group Cas+E2), with an evident additive effect in the latter situation (Garcia-Florez et al, 2005). The microarray approach was done to figure out what genes are expressed and how the cells of ventral prostate gland responses when the androgen is not available comparing three diferent androgen deprivation methods (sirurgical castration, high dose of 17-beta estradiol and both treatment combined).
2015-03-28 | GSE56289 | GEO
Project description:Androgens are required for prostate development, growth and physiology, by activating the androgen receptor (AR) upon activation by testosterone and dihydrotestosterone (DHT), the AR undergoes conformational changes, dimerizes and translocates to the cell nucleus regulation important genes releted to cell survival. Understanding the mechanisms of androgen regulation in the prostate gland is important, because the prostate is affected by several different diseases, in particular prostate cancer (PCa). Several ways exist to treat prostate cancer and promote epithelial cell death. Treatments involving androgen manipulation include surgical castration (bilateral orchiectomy), antiandrogens (usually AR antagonists), or substances that inhibit androgen synthesis (5 alpha-reductase inhibitors, gonadotrophin-releasing hormone blockers). 17 beta-estradiol exerts anti-androgen effects by blocking the hypothalamic production of gonadotropin-releasing hormone and thereby inhibiting the production of testosterone by the testes , but also acts locally via interactions with either of the estrogen receptors found in the gland. It is known that the kinetics of apoptosis are different in the rat ventral prostate (VP) of castrated rats (Cas group) and in rats subjected to 17 beta-estradiol high dose (group E2) or their combination (group Cas+E2), with an evident additive effect in the latter situation (Garcia-Florez et al, 2005). The microarray approach was done to figure out what genes are expressed and how the cells of ventral prostate gland responses when the androgen is not available comparing three diferent androgen deprivation methods (sirurgical castration, high dose of 17-beta estradiol and both treatment combined). Forty-eight 21-day-old male Wistar rats were obtained from the Multidisciplinary Center for Biological Research (CEMIB), University of Campinas. The animals were kept under normal light conditions (12-h light:dark cycle) and received filtered tap water and Purina rodent chow ad libitum. On the 90th day after birth, the rats were divided in four groups (n=3) and assigned to different treatment groups. To cause androgen deprivation, we utilized three different procedures with different effects on epithelial cell apoptosis. Animals in the first group were castrated (Cas) by orchiectomy via scrotal incision under ketamine (150 mg/Kg body weight) and xylazin (10 mg/kg body weight) anesthesia. Animals in the second group received a 25 mg/Kg body weight dose of 17β-estradiol diluted in corn oil (E2 group). The third group received a combination of both treatments (Cas+E2 group) (combined orchiectomy and 17β-estradiol). In the control group (Ct; normal androgen and estrogen), the animals received only the vehicle. Three days after the treatments, the rats were killed by anesthetic overdose, and the ventral prostate was dissected out for the microarray and immunohistochemistry analyses.
2015-03-28 | E-GEOD-56289 | biostudies-arrayexpress