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Multiplexing Nanodrug Ameliorates Liver Fibrosis via ROS Elimination and Inflammation Suppression

Youcui Xu1, Jing Chen2, Wei Jiang3

  • 1Department of Orthopaedics, The First Affiliated Hospital of University of Science and Technology of China, Intelligent Nanomedicine Institute, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, P. R. China.

Small (Weinheim an Der Bergstrasse, Germany)
|November 10, 2021
PubMed

Insights

This study introduces a novel nanodrug, carbon quantum dot-dexamethasone (CD-Dex), for liver fibrosis therapy. It effectively reduces oxidative stress and inflammation, offering a promising new treatment approach.

Area of Science:

  • Biomedical Engineering
  • Nanotechnology
  • Hepatology

Background:

  • Liver fibrosis, a precursor to hepatocellular carcinoma, is driven by oxidative stress and inflammation.
  • Current therapies often address only one pathological aspect, neglecting microstructure targeting.
  • Simultaneous targeting of pathological microstructures, reactive oxygen species (ROS), and inflammation is crucial for effective liver fibrosis treatment.

Purpose of the Study:

  • To develop and evaluate an esterase-responsive carbon quantum dot-dexamethasone (CD-Dex) nanodrug for liver fibrosis therapy.
  • To investigate the capacity of CD-Dex to target pathological microstructures, scavenge ROS, and suppress inflammation.
  • To assess the antifibrotic efficacy of CD-Dex in alleviating liver injury and collagen deposition.

Main Methods:

  • Development of a hepatocyte-targeting, esterase-responsive CD-Dex nanodrug.
  • In vitro and in vivo assessment of ROS scavenging by CD-Dex.
  • Evaluation of CD-Dex's effect on Kupffer cell activation and inflammatory cell infiltration.
  • Histopathological analysis to quantify liver injury and collagen deposition.

Main Results:

  • CD-Dex efficiently scavenged intrahepatic ROS, inhibiting Kupffer cell activation and inflammation.
  • Released dexamethasone (Dex) suppressed inflammatory responses by reducing inflammatory cell infiltration.
  • CD-Dex treatment significantly alleviated liver injury and collagen deposition, demonstrating antifibrotic effects.
  • The nanodrug effectively targeted pathological microstructures, offering a multiplexing therapeutic strategy.

Conclusions:

  • The developed CD-Dex nanodrug offers a promising multiplexing therapeutic strategy for liver fibrosis.
  • Simultaneous ROS elimination and inflammation suppression by CD-Dex are key to its antifibrotic efficacy.
  • This novel nanodrug holds significant potential for preventing the progression of liver fibrosis and related complications.
Keywords:
hepatocyte targetinginflammation suppressionliver fibrosisreactive oxygen species elimination

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