rapamycin inhibits proliferation of estrogen-receptor-positive breast cancer cells





Androgen receptor inhibits estrogen receptor-alpha activity and is prognostic in breast cancer.Androgen receptor expression is significantly associated with better outcomes in estrogen receptor-positive breast cancers. Published OnlineFirst January 19, 2010 DOI:10.1158/0008-5472.CAN-09-3068 The G ProteinCoupled Receptor GPR30 Inhibits Proliferation of Estrogen Receptor Positive Breast Cancer Cells Eric A. Ariazi, Eugen Brailoiu, Smitha Yerrum, et al. The G protein-coupled receptor GPR30 binds 17beta-estradiol (E(2)) yet differs from classic estrogen receptors (ERalpha and ERbeta).We therefore examined GPR30 in estrogenic activities in ER-positive MCF-7 breast cancer cells using G-1 and diethylstilbestrol (DES), ligands that Hormone receptorpositive breast cancer represents the largest therapeutic subgroup of the disease.7. Finn RS, Dering J, Conklin D, et al: PD 0332991, a selective cyclin D kinase 4/6 inhibitor, preferentially inhibits proliferation of luminal estrogen receptor-positive human breast cancer We observed that down-regulation of ErbB-4 in estrogen receptor-positive (ER) human breast cancer cell lines (MCF-7 and T47D), which express relatively high levels of ErbB-4, significantly inhibited colony formation. Cells of breast, endometrium, ovary and prostate, were grown in the laboratory. Estrogen (estradiol) was added to the cells.To determine the biologic mechanism of why progesterone inhibits the proliferation of breast cancer cells, a variety of cancer cell lines with different receptors and Our analyses revealed that ligand-induced Ret activation: (i) stimulates migration of breast cancer cells (ii) rescues cells from anti-proliferative effects of endocrine treatment andIn vivo inhibition of Ret in a metastatic breast cancer model inhibits tumour outgrowth and metastatic potential. METHODS: Estrogen receptor positive (ER) BCCs wereThis study provides mechanistic insight as to how obesity enhances the proliferation and metastasis of breast cancer cells specifically, obASC-derived leptin contributes to the aggressiveness of breast cancer in obese women. Metformin and rapamycin have distinct effects on the AKT pathway and proliferation in breast cancer cells.

Anti-estrogen resistance in breast cancer is induced by the tumor microenvironment and can be overcome by inhibiting mitochondrial function in epithelial cancer cells. 28 [J Surg Res2007 Mar] Rapamycin inhibits proliferation of estrogen- receptor-positive breast cancer cells.98 [J Natl Cancer Inst2014 Jul] Effects of obesity on transcriptomic changes and cancer hallmarks in estrogen receptor-positive breast cancer. Rapamycin inhibits proliferation of estrogen-receptor-positive breast cancer cells, J Surg Res, 138 (1), 37-44, 2007. The mTOR signaling pathway is critical to cell growth, proliferation, and survival and rapamycin inhibits these hallmark processes of cancer.Hormone receptor positive, HER2 negative breast cancer.Antagonist of estrogen receptor. Breast cancer. Trastuzumab. Title: Novel PSAT1 Small Molecule Inhibitors Decrease Breast Cancer Cell Proliferation and Synergize with Anti-Estrogen Therapies in Endocrine Resistant Cells [2015].This miR is an established inhibitor of mammalian Target of Rapamycin (mTOR). Mammalian target of rapamycin, TK, Cox-2, heat shock protein 90, PARP, Ki67, and TOP-2Aare important biomarkers of triple negative breast cancer [62].Lin W, Huang J, Liao X, Yuan Zet, Feng Sal (2016) Neo-tanshinlactone selectively inhibits the proliferation of estrogen receptor positive As is reported in numerous studies, melatonin, an endogenous hormone secreted by the pineal gland, could markedly inhibit estrogen-induced proliferation of breast cancer (BC) cells. For example, estrogen and progesterone have a proliferation-inducing effect and are involved in the carcinogenesis of breast cancer and different drugs are currently available to decrease its effects.In MCF-7 (human breast adenocarcinoma, hormone receptor-positive cells), physiological estrogen Breast cancer traditionally has been classified into three different subtypes based on the presence or absence of three receptors found on cancer cells (7).

Hormone receptor (HR) positive breast cancers express estrogen and/or progesterone receptors (ER/PR) 17--Estradiol Breast Cancer Estrogen Receptor Mass Spectrometry SILAC.J. Frasor, et al Profiling of Estrogen Upand DownRegulated Gene Expression in Human Breast Cancer Cells: Insights into Gene Networks and Pathways Underlying Estrogenic Control of Proliferation and Cell OBJECTIVE: To test the effect of lycopene on the proliferation and apoptosis of the estrogen receptor(ER)-positive MCF-7 and ER-negative MDA-MB-231 human breast cancer cell lines.hormone-refractory setting and to identify the subsets of patients who will benefit from combination hormonal therapy using targeted agents.Keywords: everolimus, estrogen receptor-positive breast cancer, hormone resistance, mammalian target of rapamycin, inhibition. The indole-3-carbinol cyclic tetrameric derivative CTet inhibits cell proliferation via overexpression of p21/CDKN1A in both estrogenPreclinical modeling of combined phosphatidylinositol-3-kinase inhibition with endocrine therapy for estrogen receptor-positive breast cancer. Estrogen receptor positive breast cancers in BRCA1 mutation carriers: clinical risk factors andDepletion of BRCA1 impairs differentiation but enhances proliferation of mammary epithelial cells.BRCA1 inhibition of estrogen receptor signaling in transfected cells. Science. 1999284:1354-6. Uptake of estrogen precursors is important for cell proliferation in estrogen receptor (ER)-positive breast cancer. Estrone sulfate (E1S) is known as the main precursor of estradiol (E2). The proliferation of breast cells during the first pregnancy results in differentiation into mature breast cells prepared for lactation, but this proliferation may also leadThe risk of breast cancer increased with increasing estrogen levels.Receptor status and histologic subtypes of breast cancer. Abstract. In breast cancer (BC) epithelial cells, the mitogenic action of estradiol is transduced through binding to two receptors, ER and ER, which act as transcription factors.These estrogen-binding systems associate with various proteins that direct cell cycle signaling, proliferation and survival. GDNF induces cell migration and proliferation of breast cancer cells.The standard treatment for breast cancer patients whose tumours are estrogen receptor positive (ER) is surgery followed by endocrine treatment.as well as inhibited the expression of cell cycle-related proteins, cyclin D1, and cyclin-dependent kinase 4 (CDK4) in MCF-7 and T47D luminal subtype breast cancer cells. In addition, estrogen receptor (ER-) was down-regulated by -thujaplicin via enhanced proteolysis by ubiquitination Overcoming endocrine resistance due to reduced PTEN levels in estrogen receptor-positive breast cancer by co-targeting mammalian target of rapamycin, protein kinase B, or mitogen-activated protein kinase kinase. Rapamycin inhibit PCa proliferation. Figure 1. Effectiveness of inhibitor rapamycin against PC-3 human prostate cancer cells.[4] Chang SB, Miron P, Miron A, Iglehart JD Rapamycin inhibits proliferation of estrogen-receptor-positive breast cancer cells. Ligand binding assays (LBA) using frozen breast tumor tissues were an early detection method for assessing hormone receptor positive cancers.If the tissue is hormone receptor positive, ER and PR are present, this confirms that the cancer cells growth responds to the hormones estrogen Estrogen signaling and the estrogen receptor (ER) are implicated in breast cancer progression, and the majority of the human breast cancers start out as estrogenDeregulation of ER coregualtors or ER extranuclear signaling has potential to promote metastasis in ER- positive breast cancer cells. Representatives of several different classes of flavonoids were tested for their effects on the proliferation of an estrogen receptor-positive human breast cancer cell line, MCF-7. Preferential Estrogen Receptor Ligands Inhibit Proliferation and Reduce Bcl-2 Expression in Fulvestrant-resistant Breast Cancer Cells.Abstract: Endocrine resistance is a significant clinical problem in the treatment of estrogen (E2) receptor positive breast cancers. Also known as. English. Rapamycin inhibits proliferation of estrogen- receptor-positive breast cancer cells. The estrogen receptor (ER) is a major target for the treatment of breast cancer cells. Genistein, a soy isoflavone, possesses a structure similar to estrogen and can both mimic and antagonize estrogen effects although at high concentrations it inhibits breast cancer cell proliferation. Estrogen receptor (ER) is an important prognostic marker and therapeutic target of breast cancer.Moreover, metformin has been reported to be able to inhibit proliferation and induce apoptosis in triple-negative breast cancer cell lines (15,16). How Does Estrogen Induce Proliferation of Cancer Cells? Small molecule inhibitors of estrogen and progesterone receptor action in breast cancer cells.

Everolimus, Exemestane, Estrogen-receptor positive advanced breast cancer, Mammalian target of rapamycin inhibitor, Medication-related osteonecrosis of the jaw (MRONJ). The proper level of estrogen-estrogen receptor (ER) signaling is important for the maintenance of epithelial homeostasis in the breast. In a previous study we demonstrated that ATBF1, which has been suggested as a tumor suppressor in breast cancer, inhibited estrogen-mediated cell proliferation Rapamycin Inhibits Proliferation of Estrogen-Receptor-Positive Breast Cancer Cells. Sharon B. Chang Penelope Miron Alexander Miron J. Dirk Iglehart. Sirolimus (Rapamune), a rapamycin analog (rapalog), has been shown to inhibit the growth of cancer cell lines and xenografts from different tumorHyperactivation of phosphatidylinositol-3 kinase promotes escape from hormone dependence in estrogen receptor-positive human breast cancer. There is an urgent clinical need for safe and effective treatment agents and therapy targets for estrogen receptor negative (ER) breast cancer. G protein-coupled receptor 30 (GPR30), which mediates non-genomic signaling of estrogen to regulate cell growth AA-etherA inhibits DNA replication and cell division of both estrogen receptor positive (MCF-7) and estrogen receptor negative (BT-20) breast cancer cells in culture in a dose-dependent manner. Maximal inhibition in MCF-7 and BT-20 cells was obtained with 100 M All patients with invasive breast cancer or a breast cancer recurrence should have their tumors tested for estrogen and progesterone receptors.If breast cancer cells have estrogen receptors, the cancer is called ER- positive breast cancer. For example, Quercetin inhibits proliferation breast cancer cells (Tao, He, Chen, 2015), human gliomaactivity of AAE on both Estrogen Receptor-(ER) positive and ERnegative breast cancer cells by MTT assay for 72hs.AAE and rapamycin synergetsicly induce cytotoxicity in BrCa cells. II Inhibition of estrogen receptor negative breast cancer cell growth by aryl-hydrocarbon receptorIGF-1 stimulates cell proliferation and inhibits apoptosis and has strong mitogenic effects in a wide variety of cancer cell lines. To determine the influence of one such alternative, black cohosh (Cimicifuga racemosa [CR]), on estrogen-dependent mammary cancers, we conducted an in vitro investigation of the effect of an isopropanolic CR-extract on the proliferation of estrogen receptor-positive breast cancer cells. Studies show that the mechanistic target of rapamycin (mTOR) inhibitor everolimus, in combination with either an AI or tamoxifen, is an option for postmenopausal womenPlasma ESR1 Mutations and the Treatment of Estrogen Receptor-Positive Advanced Breast Cancer. J Clin Oncol 2016 34:2961. In breast cancer, ER/mTOR crosstalk is an important indicator of hormone receptor status, as IGF-mediated mTORC1 activation repressed progesterone receptor (PgR)Chang SB, Miron P, Miron A, Iglehart JD: Rapamycin inhibits proliferation of estrogen-receptor-positive breast cancer cells. The current study investigates the impact of inhibiting leptin expression in lnASCs and obASCs on breast cancer cell (BCC) growth and progression. Methods: Estrogen receptor positive (ER) BCCs were co-cultured with leptin shRNA lnASCs or leptin shRNA obASCs and changes in the proliferation

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