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Neutrophil-mediated and low density lipoprotein receptor-mediated dual-targeting nanoformulation enhances brain accumulation of scutellarin and exerts neuroprotective effects against ischemic stroke

机译:中性粒细胞介导和低密度脂蛋白受体介导的双靶向纳米型血管型纳米型血管蛋白酶增强瘢痕菌素的脑积累,并对缺血性卒中产生神经保护作用

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摘要

Delivery of poorly permeable drugs across the blood-brain barrier (BBB) is a great challenge in the treatment of ischemic stroke. In order to construct a suitable delivery system for this purpose, we developed a dual-targeting nanoformulation to transfer therapeutic agents targeting the inflammatory sites of the ischemic brain. The matrix of this system is a hydroxyl-terminated polyamidoamine dendrimer with excellent biodegradability. The surface of the matrix is functionalized with two targeting peptides: Angiopep-2 is a low density lipoprotein receptor-mediated peptide with high BBB transcytosis capacity with ligands expressed on brain endothelial cells; N-acetylated proline-glycine-proline (PGP) has high affinity to CXCR2 expressed on infiltrating neutrophils. This system proved to be a high-loading formulation for the neuroprotective compound, scutellarin (STA), and significantly improved its therapeutic efficacy in a rodent model of ischemic stroke. The molecular mechanism underlying the therapeutic efficacy of this formulation is associated with significant down-regulation of the inflammatory cytokines, neutrophils infiltration and intracellular calcium overload and blockade of the inflammatory signaling pathway HMGB1/TLRs/MyD88/TRIF/NF-kappa B. Our results suggest that this dual-targeting delivery system is a promising drug delivery vehicle for ischemic stroke, and possibly other CNS diseases where neuroinflammation is involved.
机译:跨越血脑屏障(BBB)渗透性差的药物的递送是在缺血性中风治疗的巨大挑战。为了构建一个合适的输送系统,为此,我们开发了一种双靶向纳米制剂转移治疗药物靶向缺血性脑的炎症部位。该系统的基体是羟基封端的树枝状聚合物聚酰胺具有优异的生物降解性。基体的表面官能化具有两个靶向肽:血管肽-2是低密度脂蛋白与上脑内皮细胞表达的配体的高BBB转胞吞能力受体介导的肽; N-乙酰化的脯氨酸 - 甘氨酸 - 脯氨酸(PGP)具有高的亲和力与CXCR2上嗜中性粒细胞浸润的表达。这个系统被证明是神经保护化合物的高负载制剂,灯盏花乙(STA),和显著改善缺血性中风的啮齿动物模型其治疗功效。该制剂的治疗功效的基础的分子机制与炎性细胞因子,嗜中性粒细胞浸润的显著下调和细胞内钙超载和炎症信号传导途径的阻断HMGB1 / TLR的/ MyD88的/ TRIF / NF-卡帕B.我们的结果相关联的表明,这种双重靶向递送系统是缺血性中风有希望的药物递送载体,且其中神经炎症参与可能的其它中枢神经系统疾病。

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  • 来源
    《RSC Advances》 |2019年第3期|共20页
  • 作者单位

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

    Harbin Med Univ Affliated Hosp 1 Harbin Heilongjiang Peoples R China;

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

    Yale Univ Sch Med Dept Pharmacol New Haven CT 06510 USA;

    Yale Univ Sch Med Dept Pharmacol New Haven CT 06510 USA;

    Heilongjiang Prov Rehabil Hosp Harbin Heilongjiang Peoples R China;

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

    Harbin Univ Sci &

    Technol Dept Pharmaceut Engn Sch Chem &

    Environm Engn Key Lab Green Chem Engn Harbin Heilongjiang Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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