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Polyphenol-Engineered Bimetal Oxides Promote Stem Cell Differentiation via Immune Microenvironment Reprogramming.

Jinzheng Liu1, Ziyan Yu1, Zhe Hao1

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A novel nanoplatform (MnCo3Ox-TA) effectively reprograms the immune microenvironment by scavenging harmful molecules and shifting macrophages. This promotes stem cell differentiation and enhances tissue regeneration.

Keywords:
antioxidantbimetallic oxideimmune microenvironmentpolyphenol-engineeredstem cell differentiation

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Area of Science:

  • Biomaterials Science
  • Immunology
  • Regenerative Medicine

Background:

  • Immune microenvironment critically influences stem cell behavior and tissue repair.
  • Controlling immune-matrix interactions for regenerative therapies is challenging.
  • Lack of multifunctional platforms limits precise immune modulation.

Purpose of the Study:

  • To develop a polyphenol-engineered bimetallic oxide nanoplatform (MnCo3Ox-TA) for coordinated immune modulation.
  • To direct stem cell differentiation and enhance tissue regeneration.
  • To investigate the nanoplatform's antioxidant and immunomodulatory capabilities.

Main Methods:

  • Fabrication of MnCo3Ox-TA nanoplatform with Mn doping and TA functionalization.
  • Assessment of ROS/RNS scavenging activity.
  • Evaluation of effects on bone marrow mesenchymal stem cells (BMSCs) under inflammatory stress.
  • Macrophage phenotype analysis (M1 to M2 shift).
  • Coculture experiments to assess osteogenic gene expression and differentiation.

Main Results:

  • MnCo3Ox-TA efficiently scavenges reactive oxygen and nitrogen species (ROS/RNS).
  • The nanoplatform restores osteogenic potential of BMSCs under inflammation.
  • It reduces oxidative damage and promotes M2 macrophage polarization.
  • Coculture studies confirmed enhanced osteogenic gene expression and differentiation.

Conclusions:

  • MnCo3Ox-TA serves as a multifunctional antioxidant nanoplatform.
  • It combines ROS/RNS scavenging with immune microenvironment remodeling.
  • This approach shows promise for immune-guided stem cell differentiation and tissue regeneration.