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LINK . SPRINGER . COM {}

  1. Analyzed Page
  2. Matching Content Categories
  3. CMS
  4. Monthly Traffic Estimate
  5. How Does Link.springer.com Make Money
  6. Keywords
  7. Topics
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We are analyzing https://link.springer.com/article/10.1007/s10549-015-3609-7.

Title:
Androgen receptor promotes tamoxifen agonist activity by activation of EGFR in ERα-positive breast cancer | Breast Cancer Research and Treatment
Description:
Tamoxifen (Tam) resistance represents a significant clinical problem in estrogen receptor (ER) α-positive breast cancer. We previously showed that decreased expression of Rho guanine nucleotide dissociation inhibitor (Rho GDI) α, a negative regulator of the Rho GTPase pathway, is associated with Tam resistance. We now discover that androgen receptor (AR) is overexpressed in cells with decreased Rho GDIα and seek to determine AR’s contribution to resistance. We engineered ERα-positive cell lines with stable knockdown (KD) of Rho GDIα (KD cells). Resistance mechanisms were examined using microarray profiling, protein-interaction studies, growth and reporter gene assays, and Western blot analysis combined with a specific AR antagonist and other signaling inhibitors. Tam-resistant tumors and cell lines with low Rho GDIα levels exhibited upregulated AR expression. Microarray of Rho GDIα KD cells indicated that activation of EGFR and ERα was associated with Tam treatment. When AR levels were elevated, interaction between AR and EGFR was detected. Constitutive and Tam-induced phosphorylation of EGFR and ERK1/2 was blocked by the AR antagonist Enzalutamide, suggesting that AR-mediated EGFR activation was a mechanism of resistance in these cells. Constitutive ERα phosphorylation and transcriptional activity was inhibited by Enzalutamide and the EGFR inhibitor gefitinib, demonstrating that AR-mediated EGFR signaling activated ERα. Tam exhibited agonist activity in AR overexpressing cells, stimulating ERα transcriptional activity and proliferation, which was blocked by Enzalutamide and gefitinib. We describe a novel model of AR-mediated Tam resistance through activation of EGFR signaling leading to ER activation in ERα-positive cells with low expression of Rho GDIα.
Website Age:
28 years and 1 months (reg. 1997-05-29).

Matching Content Categories {📚}

  • Science
  • Health & Fitness
  • Education

Content Management System {📝}

What CMS is link.springer.com built with?

Custom-built

No common CMS systems were detected on Link.springer.com, and no known web development framework was identified.

Traffic Estimate {📈}

What is the average monthly size of link.springer.com audience?

🌠 Phenomenal Traffic: 5M - 10M visitors per month


Based on our best estimate, this website will receive around 5,000,019 visitors per month in the current month.
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How Does Link.springer.com Make Money? {💸}

We don’t know how the website earns money.

Many websites are intended to earn money, but some serve to share ideas or build connections. Websites exist for all kinds of purposes. This might be one of them. Link.springer.com might be earning cash quietly, but we haven't detected the monetization method.

Keywords {🔍}

cancer, breast, pubmed, article, google, scholar, cas, receptor, res, androgen, resistance, estrogen, rho, cells, growth, tamoxifen, activation, egfr, signaling, factor, central, activity, cell, kinase, supplementary, material, fuqua, expression, human, content, research, enzalutamide, therapy, dois, clin, privacy, cookies, erαpositive, tsimelzon, tam, gdiα, erα, phosphorylation, access, receptors, medicine, endocrine, treat, mitogenactivated, protein,

Topics {✒️}

er/her2-positive breast cancer month download article/chapter tamoxifen-resistant breast cancer mitogen-activated protein kinase erα-positive breast cancer estrogen receptor alpha steroid antagonist action α-positive breast cancer early breast cancer steroid receptor regulation unliganded estrogen receptor androgen receptor expression oestrogen receptor activity progesterone receptor-positive prostate cancer cells growth factor receptors tam-induced phosphorylation ar-mediated tam resistance enhancing endocrine therapy related subjects bidirectional cross talk full article pdf human breast cancer human breast cancers erα-positive cells ar-mediated egfr activation luca gelsomino cotargeting signaling pathways personalized cancer therapy breast cancer cells major driving factor breast cancer prognosis estrogen receptor tyrosine kinase inhibitor privacy choices/manage cookies androgen receptor clinical breast cancer tam-resistant tumors androgen-binding proteins growth factor breast cancer survival map kinase pathway nongenomic androgen actions prostate cancer rho gtpase pathway decreased rho gdiα cell proliferation natl cancer inst endocrine therapy /akt signaling routes

Schema {🗺️}

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         headline:Androgen receptor promotes tamoxifen agonist activity by activation of EGFR in ERα-positive breast cancer
         description:Tamoxifen (Tam) resistance represents a significant clinical problem in estrogen receptor (ER) α-positive breast cancer. We previously showed that decreased expression of Rho guanine nucleotide dissociation inhibitor (Rho GDI) α, a negative regulator of the Rho GTPase pathway, is associated with Tam resistance. We now discover that androgen receptor (AR) is overexpressed in cells with decreased Rho GDIα and seek to determine AR’s contribution to resistance. We engineered ERα-positive cell lines with stable knockdown (KD) of Rho GDIα (KD cells). Resistance mechanisms were examined using microarray profiling, protein-interaction studies, growth and reporter gene assays, and Western blot analysis combined with a specific AR antagonist and other signaling inhibitors. Tam-resistant tumors and cell lines with low Rho GDIα levels exhibited upregulated AR expression. Microarray of Rho GDIα KD cells indicated that activation of EGFR and ERα was associated with Tam treatment. When AR levels were elevated, interaction between AR and EGFR was detected. Constitutive and Tam-induced phosphorylation of EGFR and ERK1/2 was blocked by the AR antagonist Enzalutamide, suggesting that AR-mediated EGFR activation was a mechanism of resistance in these cells. Constitutive ERα phosphorylation and transcriptional activity was inhibited by Enzalutamide and the EGFR inhibitor gefitinib, demonstrating that AR-mediated EGFR signaling activated ERα. Tam exhibited agonist activity in AR overexpressing cells, stimulating ERα transcriptional activity and proliferation, which was blocked by Enzalutamide and gefitinib. We describe a novel model of AR-mediated Tam resistance through activation of EGFR signaling leading to ER activation in ERα-positive cells with low expression of Rho GDIα.
         datePublished:2015-10-20T00:00:00Z
         dateModified:2015-10-20T00:00:00Z
         pageStart:225
         pageEnd:237
         sameAs:https://doi.org/10.1007/s10549-015-3609-7
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            Androgen receptor
            Epidermal growth factor receptor
            Estrogen receptor
            Breast cancer
            Endocrine therapy resistance
            Tamoxifen
            Oncology
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      headline:Androgen receptor promotes tamoxifen agonist activity by activation of EGFR in ERα-positive breast cancer
      description:Tamoxifen (Tam) resistance represents a significant clinical problem in estrogen receptor (ER) α-positive breast cancer. We previously showed that decreased expression of Rho guanine nucleotide dissociation inhibitor (Rho GDI) α, a negative regulator of the Rho GTPase pathway, is associated with Tam resistance. We now discover that androgen receptor (AR) is overexpressed in cells with decreased Rho GDIα and seek to determine AR’s contribution to resistance. We engineered ERα-positive cell lines with stable knockdown (KD) of Rho GDIα (KD cells). Resistance mechanisms were examined using microarray profiling, protein-interaction studies, growth and reporter gene assays, and Western blot analysis combined with a specific AR antagonist and other signaling inhibitors. Tam-resistant tumors and cell lines with low Rho GDIα levels exhibited upregulated AR expression. Microarray of Rho GDIα KD cells indicated that activation of EGFR and ERα was associated with Tam treatment. When AR levels were elevated, interaction between AR and EGFR was detected. Constitutive and Tam-induced phosphorylation of EGFR and ERK1/2 was blocked by the AR antagonist Enzalutamide, suggesting that AR-mediated EGFR activation was a mechanism of resistance in these cells. Constitutive ERα phosphorylation and transcriptional activity was inhibited by Enzalutamide and the EGFR inhibitor gefitinib, demonstrating that AR-mediated EGFR signaling activated ERα. Tam exhibited agonist activity in AR overexpressing cells, stimulating ERα transcriptional activity and proliferation, which was blocked by Enzalutamide and gefitinib. We describe a novel model of AR-mediated Tam resistance through activation of EGFR signaling leading to ER activation in ERα-positive cells with low expression of Rho GDIα.
      datePublished:2015-10-20T00:00:00Z
      dateModified:2015-10-20T00:00:00Z
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      pageEnd:237
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         Androgen receptor
         Epidermal growth factor receptor
         Estrogen receptor
         Breast cancer
         Endocrine therapy resistance
         Tamoxifen
         Oncology
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                     name:Human Genome Sequencing Center, Baylor College of Medicine, Houston, USA
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            name:Baylor College of Medicine
            address:
               name:Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, USA
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               type:PostalAddress
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            name:University of Texas MD Anderson Cancer Center
            address:
               name:Sheikh Kahlifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, University of Texas MD Anderson Cancer Center, Houston, USA
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            name:Baylor College of Medicine
            address:
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            name:Baylor College of Medicine
            address:
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      name:Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, USA
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      name:Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, USA
      name:Sheikh Kahlifa Bin Zayed Al Nahyan Institute for Personalized Cancer Therapy, University of Texas MD Anderson Cancer Center, Houston, USA
      name:Human Genome Sequencing Center, Baylor College of Medicine, Houston, USA
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External Links {🔗}(186)

Analytics and Tracking {📊}

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Libraries {📚}

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CDN Services {📦}

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4.03s.