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Related Experiment Video

Updated: Jan 17, 2026

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice

An Adoptive Transfer Model of Rheumatoid Arthritis in Mice

Published on: June 6, 2025

Biocatalytic Nanoregulators Restore Joint Redox-Immune Homeostasis in Rheumatoid Arthritis.

Xingheng Wang¹, Jianbo Huang¹, Shuwei Zhang¹

¹Department of Ultrasound, National Clinical Research Center for Geriatrics, Med-X Center for Materials, West China Hospital, Sichuan University, Chengdu, 610041, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)

|January 14, 2026

Summary

This study introduces a novel treatment for rheumatoid arthritis (RA) using engineered nanoparticles. These nanoparticles reduce inflammation and protect cartilage by managing reactive oxygen species (ROS) and modulating immune responses.

Keywords:

anti‐inflammatory extracellular vesicles joint protection macrophage polarization rheumatoid arthritis targeted therapy

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Area of Science:

Biomaterials Science
Immunology
Nanotechnology

Background:

Rheumatoid arthritis (RA) is an autoimmune disorder causing joint inflammation and cartilage erosion.
Current RA treatments face challenges with non-specific delivery and unfavorable risk-benefit profiles.

Purpose of the Study:

To develop a novel therapeutic strategy for RA using mesenchymal stem cell-derived extracellular vesicles (EVs) coated on ruthenium-loaded metal-organic frameworks (Ru@ZrMOF).
To evaluate the efficacy of Ru@ZrMOF/EVs in alleviating RA symptoms and protecting joint tissues.

Main Methods:

Coating Ru@ZrMOF with EVs to enhance biocompatibility and targeting.
Utilizing the catalase mimetic activity of Ru@ZrMOF for reactive oxygen species (ROS) scavenging and oxygen production.
Assessing the therapeutic effects on joint inflammation, cartilage protection, pannus formation, macrophage polarization, and cytokine profiles in an RA model.

Main Results:

Ru@ZrMOF/EVs demonstrated significant joint inflammation alleviation and cartilage protection.
The treatment inhibited pannus formation and promoted a shift from M1 pro-inflammatory to M2 anti-inflammatory macrophages.
A decrease in pro-inflammatory cytokines and hypoxia inducible factor-1α was observed.

Conclusions:

Ru@ZrMOF/EVs represent a promising therapeutic approach for RA.
The strategy effectively targets ROS and modulates immune responses for both inflammation control and tissue protection.