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Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer

ABSTRACT: Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer

PROVIDER: PRJNA413693 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6149820_1.fastq.gz	Fastqsanger.gz
	SRR6149820_2.fastq.gz	Fastqsanger.gz
	SRR6149830_1.fastq.gz	Fastqsanger.gz
	SRR6149830_2.fastq.gz	Fastqsanger.gz
	SRR6149840_1.fastq.gz	Fastqsanger.gz

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Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer

Project description:Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer

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Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer

Project description:Male breast cancer (MBC) is rare and poorly characterized. Like the female counterpart, most MBCs are hormonally driven, but resistance to hormonal treatment is common. The pan-hormonal action of steroid hormonal receptors including Estrogen Receptor alpha (ERα), Androgen Receptor (AR), Progesterone Receptor (PR) and Glucocorticoid Receptor (GR) in this understudied tumor type remains wholly unexamined. This pioneering study reveals genomic cross-talk of steroid hormone receptor action and interplay in human tumors, here in the context of MBC, in relation to patient outcome. Using chromatin immunoprecipitation coupled with massively-parallel sequencing (ChIP-seq), we characterized human MBCs for epigenetic make-up of hormonal regulation in human tumors, revealing genome-wide chromatin binding landscapes of ERα, AR, PR and GR, along with pioneer factor FOXA1 and enhancer-enriched histone mark H3K4me1. These data were integrated with transcriptomics analyses to reveal gender-selective and genomic location-specific hormone receptor action, that are associated with survival in MBC patients.

2018-02-02 | GSE104399 | GEO

Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer

Project description:Male breast cancer (MBC) is rare and poorly characterized. Like the female counterpart, most MBCs are hormonally driven, but resistance to hormonal treatment is common. We use transcriptomics to reveal gender-selective and genomic location-specific hormone receptor actions, which associated with survival in MBC patients.

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Characterizing steroid hormone receptor chromatin binding landscapes in male and female breast cancer.

Project description:Male breast cancer (MBC) is rare and poorly characterized. Like the female counterpart, most MBCs are hormonally driven, but relapse after hormonal treatment is also noted. The pan-hormonal action of steroid hormonal receptors, including estrogen receptor alpha (ER?), androgen receptor (AR), progesterone receptor (PR), and glucocorticoid receptor (GR) in this understudied tumor type remains wholly unexamined. This study reveals genomic cross-talk of steroid hormone receptor action and interplay in human tumors, here in the context of MBC, in relation to the female disease and patient outcome. Here we report the characterization of human breast tumors of both genders for cistromic make-up of hormonal regulation in human tumors, revealing genome-wide chromatin binding landscapes of ER?, AR, PR, GR, FOXA1, and GATA3 and enhancer-enriched histone mark H3K4me1. We integrate these data with transcriptomics to reveal gender-selective and genomic location-specific hormone receptor actions, which associate with survival in MBC patients.

| S-EPMC5797120 | biostudies-literature

A male-specific steroid hormone controls female reproductive biology in the malaria mosquito

Project description:Insects, unlike vertebrates, are generally believed to lack steroid hormones with functions predominantly associated with adult male biology. In the malaria mosquito Anopheles gambiae, the ecdysteroid 20-hydroxyecdysone (20E) appears to both control egg development in females and induce mating refractoriness and oviposition when sexually transferred by males. Here we show that these sex-specific functions are instead carried out by distinct steroids. We identify a male-specific oxidized form of 20E (3D20E) that upon sexual transfer switches off female mating receptivity, ensuring male paternity. Endogenous female 20E does not induce mating refractoriness, while it triggers oviposition in mated females when expression of a 20E-inhibiting kinase is repressed. 3D20E and 20E have different downstream targets, with 3D20E inducing expression of a tolerance factor that preserves female fitness during Plasmodium infection. The evolution of this male steroid has therefore not only shaped the mating biology of An. gambiae, but also impacted malaria transmission.

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Project description:In breast cancer cells, some topologically associating domains (TADs) behave as hormonal gene regulation units, within which genes transcription is coordinately regulated in response to steroid hormones. Here we further described that responsive TADs contain 20-100 kb-long clusters of intermingled estrogen receptor (ER) and progesterone receptor (PR) binding sites, hereafter called Hormone-Control Regions (HCRs). In T47D cells, we identified more than 200 HCRs, which are frequently bound by unliganded ER and PR. These HCRs establish steady long-distance inter-TAD interactions between them and organize characteristic looping structures with promoters even in the absence of hormones in ER+-PR+ cells. This organization is dependent on the expression of the receptors and is further dynamically modulated in response to steroid hormones. HCRs function as platforms integrating different signals resulting in some cases in opposite transcriptional responses to estrogens or progestins. Altogether, these results suggest that steroid hormone receptors act not only as hormone-regulated sequence-specific transcription factors, but also as local and global genome organizers.

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Hormone Control Regions mediate steroid receptor-dependent genome organizations

Project description:Hormone Control Regions mediate steroid receptor-dependent genome organizations

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Interdependent nutrient availability and steroid hormone signals facilitate root growth plasticity

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Serum steroid and thyroid hormone concentrations in healthy domestic male and female alpacas.

Project description:Alpacas are high quality fiber producing animals, kept for production purpose and as pets. Endocrine imbalances from adrenal glands, gonads, or thyroid gland may result in coat abnormalities in domestic animals and affect reproduction. Contrary to many domesticated animals, information on hormone concentrations in alpacas is scarce. The purpose of this study was to provide steroid and thyroid hormone values in domestic alpacas. Blood was collected from healthy male (35 intact, 2 castrated) and female (48 non-pregnant, 3 pregnant) alpacas from local farms in Tennessee. Adrenal, reproductive, and thyroid hormones were analyzed. There were no significant differences in median concentrations of progesterone, estradiol, thyroxine (T4), and triiodothyronine (T3) between intact male and female non-pregnant alpacas. Median concentrations of testosterone, androstenedione, 17-hydroxyprogesterone, and cortisol were significantly higher in intact male alpacas compared to female non-pregnant alpacas. This information provides adrenal, gonadal, and thyroid hormone concentrations in alpacas to help with diagnosis of endocrine disorders.

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