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Modulation of Cell Behavior by 3D Biocompatible Hydrogel Microscaffolds with Precise Configuration
Wei-Cai Zhang1,2, Mei-Ling Zheng1,2, Jie Liu1
1Laboratory of Organic Nano Photonics and CAS Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, No. 29, Zhongguancun East Road, Beijing 100190, China.
This study demonstrates how 3D biocompatible hydrogel microscaffolds fabricated using two-photon polymerization (TPP) can precisely mimic the in vivo microenvironment. These advanced scaffolds effectively modulate cell behavior and enhance cell surface area for improved tissue engineering applications.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Cell Biology
Background:
- Three-dimensional (3D) micronano structures are crucial for simulating in vivo microenvironments in tissue engineering.
- Two-photon polymerization (TPP) offers high precision for fabricating complex 3D structures.
Purpose of the Study:
- To fabricate 3D biocompatible hydrogel microscaffolds using TPP, mimicking fibroblast L929 microenvironments.
- To investigate the modulation of cell behavior, including F-actin organization and cell morphology, by varying scaffold porosity.
- To assess the potential of these 3D microscaffolds for enhancing cell distribution and function in tissue engineering.
Main Methods:
- Fabrication of 3D biocompatible hydrogel microscaffolds via two-photon polymerization (TPP).
- Design considerations included cell size, spread cell morphology, strut dimensions, and scaffold porosity (69.7%–89.3%).
- Cell culture experiments to analyze cell behavior, F-actin modulation, and lamellipodia formation on 3D microscaffolds versus 2D substrates.
Main Results:
- The 3D microscaffolds successfully modulated cell behavior, evidenced by significant F-actin organization changes.
- Cells cultured on 3D microscaffolds exhibited increased lamellipodia formation compared to 2D substrates.
- Cells displayed more complex 3D shapes and increased surface area on the microscaffolds, facilitating 3D distribution.
Conclusions:
- The TPP-fabricated 3D hydrogel microscaffolds effectively replicate in vivo conditions and modulate cell behavior.
- These microscaffolds enhance cell surface area and promote 3D distribution, improving information and material exchange.
- The developed protocol offers significant potential for advancing tissue engineering applications by providing insights into in vivo cell behavior.
