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Nanofibril-Structured Granular Hydrogels Harness Stem Cell Retention and Immunoregulation in Diabetic
Qian Yang1,2, Yali Miao2, Jinshui Luo2
1School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China.
ACS Nano
|February 11, 2025
Summary
This study introduces a novel nanoengineered granular hydrogel that improves mesenchymal stem cell (MSC) delivery and function in diabetic conditions. The hydrogel enhances cell retention and regulates immune responses, showing promise for regenerative medicine.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Nanotechnology
Background:
- Granular hydrogels offer advantages for mesenchymal stem cell (MSC) delivery and tissue regeneration.
- Challenges exist in creating hydrogels that mimic natural extracellular matrix (ECM) and improve stem cell performance in diabetic environments.
Purpose of the Study:
- To develop a nanoengineered supramolecular granular hydrogel for enhanced MSC retention and immunomodulation in diabetic conditions.
- To create a biomaterial with tunable properties for improved stem cell therapy.
Main Methods:
- Assembly of a granular hydrogel matrix using hydrogen bonding and hydrophobic interactions.
- Incorporation of manganese dioxide (MnO2)-amyloid fibril (AF) nanohybrids.
- Evaluation in a two-week diabetic rat model.
Main Results:
- The hydrogel exhibited shear-thinning, injectability, self-healing, and 3D printability.
- Enhanced MSC adhesion, stemness maintenance, and osteogenic differentiation.
- Improved in vivo cell retention and anti-inflammatory effects in diabetic rats.
Conclusions:
- The nanoengineered granular hydrogel shows potential for stem cell therapy in diabetic conditions.
- The biomaterial effectively improves cell retention and modulates immune responses.
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