Serum-tolerant polymeric complex for stem-cell transfection and neural differentiation.
Yi Jin1, Guochen Han1, Yuemei Gao1
1State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing, China.
Nature Communications
|February 27, 2025
Summary
A novel nanotool, APOs@BP, enhances mesenchymal stem cell (MSC) transfection efficiency in serum conditions. This engineered MSC therapy reconstructs neural circuits and alleviates cognitive impairment in Alzheimer's disease models.
Area of Science:
- Biomedical Engineering
- Regenerative Medicine
- Nanotechnology
Background:
- Mesenchymal stem cell (MSC) therapy shows therapeutic potential but faces transfection challenges.
- Efficient and safe delivery of genetic material into MSCs is crucial for their application.
- Existing transfection methods struggle with serum interference and cell viability.
Purpose of the Study:
- To develop a serum-tolerant nanotool for efficient MSC transfection.
- To engineer MSCs for enhanced neural differentiation and therapeutic potential.
- To evaluate the efficacy of engineered MSCs in an Alzheimer's disease mouse model.
Main Methods:
- Development of APOs@BP nanotool with apolipoprotein corona and boronated polyethyleneimine core.
- Loading of miRNA-124 and all-trans retinoic acid derivative (atRAN) for sequential drug release.
- In vitro transfection efficiency and cytocompatibility assays in serum-containing medium.
- Transcriptomic analysis to elucidate differentiation pathways.
- In vivo transplantation of engineered MSCs in Alzheimer's disease model mice.
Main Results:
- APOs@BP achieved 10.4-fold higher transfection efficiency and improved cytocompatibility compared to controls in serum.
- Sequential release of atRAN and miRNA-124 enhanced MSC neural differentiation via specific signaling pathways (cGMP-PKG, MAPK, PI3K-Akt).
- Transplantation of engineered MSCs successfully reconstructed neural circuits and ameliorated cognitive deficits in Alzheimer's model mice.
Conclusions:
- The APOs@BP nanotool offers a robust and efficient method for MSC transfection in biomedical applications.
- Engineered MSCs demonstrate significant potential for neural regeneration and treating neurodegenerative diseases like Alzheimer's.
- This system provides a convenient platform for advancing MSC-based regenerative medicine.
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