نتایج جستجو برای: erα gene
تعداد نتایج: 1142712 فیلتر نتایج به سال:
Supplemental Methods and Results Computational Analysis of Putative ERα Targets Of the 92 ERα target genes identified by ChIP-chip, 72 have orthologous mouse counterparts, and their promoter sequences can be retrieved from the OMGProm database (Palaniswamy et al., 2005). When these promoter sequences were scanned by the ERTargetDB, a database for mammalian ERα target promoters previously constr...
Estrogen receptor-α (ERα) activity in the brain prevents obesity in both males and females. However, the ERα-expressing neural populations that regulate body weight remain to be fully elucidated. Here we showed that single-minded-1 (SIM1) neurons in the medial amygdala (MeA) express abundant levels of ERα. Specific deletion of the gene encoding ERα (Esr1) from SIM1 neurons, which are mostly wit...
Estrogen receptor α (ERα) plays a pivotal role in the genesis of the majority of breast tumors. Consequently, endocrine therapy is now routinely utilized in the clinic for the treatment of ERα-positive breast cancer patients. However, how ERα activity becomes dysregulated in breast cancer cells remains to be elucidated. The aim of this study was t...
سابقه و هدف: بیان ژنتیکی گیرنده استروژن-آلفا (α,erα (estrogen receptor-در سلول های تومور پستان اهمیت درمانی دارد و بیان این ژن می تواند به واسطه هیپرمتیلاسیون در اگزون 1 مهار شود. هدف از انجام این پژوهش، بررسی ارتباط بین مقادیر فولات، ویتامین b12 و هموسیستئین تام پلاسما با وضعیت هیپرمتیلاسیون erα در مبتلایان به سرطان پستان برای اولین بار بود. مواد و روش ها: جامعه مورد بررسی 137بیمار مبتلا به سر...
MOTIVATION Many studies have shown that epigenetic changes, such as altered DNA methylation and histone modifications, are linked to estrogen receptor α (ERα)-positive tumors and disease prognoses. Several recent studies have applied high-throughput technologies such as ChIP-seq and MBD-seq to interrogate the altered architectures of ERα regulation in tamoxifen (Tam)-resistant breast cancer cel...
Enzymatic cleavage of angiotensinogen by renin represents the critical rate-limiting step in the production of angiotensin II, but the mechanisms regulating the initial expression of the renin gene remain incomplete. The purpose of this study is to unravel the molecular mechanism controlling renin expression. We identified a subset of nuclear receptors that exhibited an expression pattern simil...
Estrogen receptor α (ERα) is the defining and driving transcription factor in luminal breast cancers and genes modulated by ERα can dictate cell growth and endocrine response. Nonetheless, genomic mechanisms which govern ERα-driven tumorigenesis, acquisition of chemoresistant phenotype and tumor metastases remain elusive. Recently, scientists have explored to shed light on ER regulated genomic ...
Cytochrome P4502C9 (CYP2C9) is an important drug-metabolizing enzyme responsible for the metabolism of approximately 16% of all clinically relevant drugs. It was shown previously that the activity of CYP2C9 in vivo is inhibited by oral contraceptives. The mechanisms of this effect have not been elucidated. We hypothesize that this may occur because of the sex steroid-dependent activation of est...
Estrogen receptor alpha (ERα), a ligand-dependent transcription factor, mediates the expression of its target genes by interacting with corepressors and coactivators. Since the first cloning of SRC1, more than 280 nuclear receptor cofactors have been identified, which orchestrate target gene transcription. Aberrant activity of ER or its accessory proteins results in a number of diseases includi...
Despite the fact that most breast cancer patients have estrogen receptor (ER) α-positive tumors, up to 50% of the patients are or soon develop resistance to endocrine therapy. It is recognized that HER2 activation is one of the major mechanisms contributing to endocrine resistance. In this study, we report that the ER coactivator MED1 is a novel cross-talk point for the HER2 and ERα pathways. T...
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