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Functionalized Cold Nanoclusters Identify Highly Reactive Oxygen Species in Living Organisms

机译:功能化的冷纳米团簇可识别活生物体中的高活性氧物种

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摘要

Surface engineering of nanomaterials allows fine tuning of their interactions with biological systems, and thus can benefit their applications in monitoring intracellular events. Herein, the facile synthesis of ligand-functionalized gold nanoclusters (AuNCs) as intracellular probes targeting highly reactive oxygen species (hROS, such as center dot OH, ClO-, and ONOO-) is demonstrated. Selected ligands such as quaternary ammonium and oligopeptides are utilized to modulate the surface chemistry of AuNCs. It is shown that AuNCs decorated with the cell-penetrating oligoarginine peptide facilitate cellular uptake and intracellular imaging of hROS in living cells and the zebrafish, with high stability and selectivity.
机译:纳米材料的表面工程可以对其与生物系统的相互作用进行微调,因此可以有益于其在监测细胞内事件中的应用。在本文中,展示了容易合成的配体官能化金纳米簇(AuNCs)作为靶向高活性氧(hROS,例如中心点OH,ClO-和ONOO-)的细胞内探针。选定的配体,如季铵盐和寡肽被用来调节AuNCs的表面化学。结果表明,装饰有可穿透细胞的寡精氨酸肽的AuNCs具有较高的稳定性和选择性,可促进细胞在活细胞和斑马鱼中的摄取以及hROS在细胞内的成像。

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  • 来源
    《Advanced Functional Materials》 |2018年第14期|1702026.1-1702026.7|共7页
  • 作者单位

    Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China;

    Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China;

    Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China;

    China Agr Univ, Beijing 100193, Peoples R China;

    Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China;

    China Agr Univ, Beijing 100193, Peoples R China;

    Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark;

    Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100190, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fluorescent imaging; gold nanoclusters; intracellular detection; reactive oxygen species;

    机译:荧光成像金纳米簇细胞内检测活性氧;

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