Mammary Cell News Volume 15.28 | July 20 2023

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    2023-07-20 | MCN 15.28


    Mammary Cell News by STEMCELL Technologies
    Vol. 15.28 – 20 July, 2023
    TOP STORY

    Inhibition of DPAGT1 Suppresses HER2 Shedding and Trastuzumab Resistance in Human Breast Cancer

    Scientists found that upregulation of dolichyl-phosphate N-acetylglucosaminyltransferase (DPAGT1) sustained high-level HER2 shedding to confer trastuzumab resistance, which was associated with poor clinical outcomes.
    [Journal Of Clinical Investigation]

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    Distinct Shared and Compartment-Enriched Oncogenic Networks Drive Primary Versus Metastatic Breast Cancer

    Investigators reported gene-centric common insertion-sites (gCIS) that were enriched in primary-tumors, in metastases, or shared by both compartments.
    [Nature Communications]

    Full Article

    Co-Targeting RANK Pathway Treats and Prevents Acquired Resistance to CDK4/6 Inhibitors in Luminal Breast Cancer

    The authors found that receptor activator of nuclear factor-κB (RANK) overexpression in luminal breast cancer was associated with intrinsic resistance to cyclin-dependent kinase 4/6 (CDK4/6) inhibitor, both in vitro and in mouse xenografts.
    [Cell Reports Medicine]

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    IGFBP2 Secretion by Mammary Adipocytes Limits Breast Cancer Invasion

    Researchers identified insulin-like growth factor–binding protein 2 (IGFBP2) as a potent adipocrine factor secreted by healthy breast adipocytes that acted as a barrier against invasive progression.
    [Science Advances]

    Full Article

    Nuclear PRMT5 Is a Biomarker of Sensitivity to Tamoxifen in ERα+ Breast Cancer

    Using two independent cohorts of breast cancer patients, investigators identified nuclear PRMT5 expression as an independent predictive marker of sensitivity to tamoxifen.
    [EMBO Molecular Medicine]

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    LncRNA AGPG Confers Endocrine Resistance in Breast Cancer by Promoting E2F1 Activity

    Scientists identified the long non-coding RNA (lncRNA) actin gamma 1 pseudogene 25 (AGPG) as a regulator of E2F1 activity in endocrine resistant breast cancer. Expression of AGPG was increased in endocrine-resistant breast cancer cells, which was driven by epigenomic activation of an enhancer.
    [Cancer Research]

    Abstract

    High FOXA1 Levels Induce ER Transcriptional Reprogramming, a Pro-Metastatic Secretome, and Metastasis in Endocrine-Resistant Breast Cancer

    Investigators demonstrated that ectopic high FOXA1 (H-FOXA1) expression promoted estrogen receptor-positive (ER+) breast cancer metastasis in a xenograft mouse model.
    [Cell Reports]

    Full ArticleGraphical Abstract

    RAGE/SNAIL1 Signaling Drives Epithelial-Mesenchymal Plasticity in Metastatic Triple-Negative Breast Cancer

    Researchers demonstrated that receptor for advanced glycation end products (RAGE) signaling maintained the mesenchymal phenotype of aggressive TNBC cells by enforcing the expression of SNAIL1.
    [Oncogene]

    Abstract

    RAGE Inhibitor TTP488 (Azeliragon) Suppresses Metastasis in Triple-Negative Breast Cancer

    Transcriptomic analysis of primary xenograft tumor and metastatic tissue revealed high concordance in gene and protein changes with both drugs, with TTP488 showing greater potency against metastatic driver pathways.
    [npj Breast Cancer]

    Full Article

    Loss of miR-6844 Alters Stemness/Self-Renewal and Cancer Hallmark(s) Markers through CD44-JAK2-STAT3 Signaling Axis in Breast Cancer Stem-Like Cells

    Scientists explored the functional role of loss of miR-6844 in breast cancer cells derived mammosphere. Down expression of miR-6844 significantly decreased cell proliferation in MCF-7 and T47D cells derived mammosphere in a time-dependent manner.
    [Journal of Cellular Biochemistry]

    Abstract

    miR-4796 Enhances the Sensitivity of Breast Cancer Cells to Ionizing Radiation by Impairing the DNA Repair Pathway

    Researchers investigated the functional roles and target genes of miR-4796 and miR-1287 in breast cancer cells in response to radiation.
    [Breast Cancer]

    Abstract
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    REVIEWS

    Tibolone and Breast Tissue: A Review

    The authors provide an updated narrative review focusing on the impact of tibolone on breast. They report data from major preclinical and clinical studies regarding the effects of the use of this compound on breast tissue and breast density.
    [Reproductive Sciences]

    Abstract
    INDUSTRY AND POLICY NEWS

    Professor Nicholas Turner Wins Prestigious ESMO Award for Translational Research

    Professor Nicholas Turner, Professor of Molecular Oncology at The Institute of Cancer Research, London, and Head of the Ralph Lauren Centre for Breast Cancer Research, has received the Translational Research Award by the European Society for Medical Oncology (ESMO).
    [The Institute of Cancer Research]

    Press Release
    FEATURED EVENT

    5th TIL Therapies Summit

    October 2 – 4, 2023
    Boston, Massachusetts, United States

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    JOB OPPORTUNITIES

    Postdoctoral Fellow – Obesity, Diabetes, and Cancer Research

    City of Hope – Duarte, California, United States

    Postdoctoral Positions – Cancer Drug Persistence & Tumor Microenvironment

    Albert Einstein College of Medicine – New York City, New York, United States

    Scientific Director – Clinical Research

    NCI Center for Cancer Research – Bethesda, Maryland, United States

    Postdoctoral Fellowship – Cancer Research

    Ume̴ University РUme̴, Sweden

    Higher Scientific Officer – Proteomics

    Institute of Cancer Research – London, England, United Kingdom

    > See All Jobs

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