4.8 Article

Multifunctional nanoprobes for macrophage imaging

期刊

BIOMATERIALS
卷 290, 期 -, 页码 -

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2022.121824

关键词

Macrophage; Molecular imaging; PET; Optical; MRI

资金

  1. Yangtze River Scholar Program
  2. Shanghai University of Traditional Chinese Medicine
  3. [WF221411002]

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In vivo imaging and tracking of macrophage behaviors are crucial for understanding their biological functions and fate in various diseases. To overcome the limitations of small molecular probes, researchers have developed functional nanoprobes for targeted imaging of macrophages in different diseases such as cancer, atherosclerosis, and obesity. This review systematically summarizes the recent advances in nanoprobes for in vivo and ex vivo imaging of macrophages, as well as discusses the challenges and prospects of achieving precise imaging of macrophages with improved signal-to-background ratios.
Imaging and tracking macrophage behaviors in vivo are essential to reveal its biological function and fate in various diseases. Small molecular probes suffer from poor macrophage targeting and retention, rapid clearance, and deficient metabolizing stability. To overcome these limitations, a variety of functional nanoprobes have been developed for targeted imaging of macrophages in divergent diseases such as cancer, atherosclerosis and obesity. Generally, nanoprobes are functionalized with targeting peptides, ligands or antibodies to fulfill high macro-phage affinity. In this review, the most recent advances of nanoprobes for imaging macrophages in vivo and ex vivo are systematically summarized. The challenges and perspectives of precisely imaging macrophages with improved signal-to-background ratios via nanoprobes are further discussed.

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