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Updated: Jan 22, 2026

Initiation of Metastatic Breast Carcinoma by Targeting of the Ductal Epithelium with Adenovirus-Cre: A Novel Transgenic Mouse Model of Breast Cancer
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Highly Integrated Nanoplatform Based on an E-Selectin-Targeting Strategy for Metastatic Breast Cancer Treatment

Xiao-Ling Xu, Meng-Lu Zhu, Di Liu

    Molecular Pharmaceutics
    |July 4, 2019
    PubMed

    Insights

    This study introduces a novel E-selectin-targeting nanoplatform for metastatic breast cancer treatment. The developed micelles effectively inhibit metastasis and reduce metastatic nodules by targeting tumor cells and their migration.

    Area of Science:

    • Biomedical Engineering
    • Nanotechnology
    • Oncology

    Background:

    • Metastatic breast cancer treatment faces challenges in shrinking tumors and preventing cell spread.
    • Targeted drug delivery systems (TDDSs) show promise but require enhanced antimetastatic efficacy.
    • Overcoming metastasis remains a critical therapeutic goal in breast cancer management.

    Purpose of the Study:

    • To develop and evaluate an E-selectin-targeting nanoplatform for systemic treatment of metastatic breast cancer.
    • To investigate the antimetastatic capabilities of doxorubicin-loaded sialic acid-dextran-octadecanoic acid (SDO) micelles.
    • To assess the dual function of drug delivery and inhibition of tumor cell migration by the nanoplatform.

    Main Methods:

    • Preparation of doxorubicin-loaded SDO micelles (SDD) with E-selectin targeting.
    • Evaluation of SDD micelle efficacy in orthotopic 4T1 and metastatic 4T1 tumor models.
    • Assessment of inhibition of lung and liver metastasis, and reduction of metastatic nodules.
    • Investigation of the role of blank SDO micelles in inhibiting cell migration and cell-cell binding.

    Main Results:

    • SDD micelles demonstrated significant inhibition of lung and liver metastasis in vivo.
    • A 27.33% reduction in metastatic nodules was observed compared to non-sialic acid modified micelles.
    • Blank SDO micelles exhibited a crucial role in suppressing tumor cell migration and cell-cell binding.
    • The nanoplatform showed a dual mechanism involving drug delivery and intrinsic antimetastatic properties.

    Conclusions:

    • Sialic acid-driven TDDS, specifically SDD micelles, offers potential for targeted treatment of breast cancer metastasis.
    • The nanoplatform effectively shrinks established lesions and suppresses tumor cell movement.
    • This approach holds promise for improving therapeutic outcomes in metastatic breast cancer by addressing key obstacles.
    Keywords:
    E-selectinantimetastatic activitylung metastasismicellessialic acid

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