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Related Experiment Video

Updated: Jul 24, 2025

Combination of Microstereolithography and Electrospinning to Produce Membranes Equipped with Niches for Corneal Regeneration

Combination of Microstereolithography and Electrospinning to Produce Membranes Equipped with Niches for Corneal Regeneration

Published on: September 12, 2014

A composite membrane with microtopographical morphology to regulate cellular behavior for improved tissue

Rui Zhang¹, Yuwei Gong², Zhuoyan Cai³

¹Department of Prosthodontics, College of Stomatology, Ningxia Medical University, Yinchuan 750004, China; General Hospital of Ningxia Medical University, Yinchuan 750004, China.

Acta Biomaterialia

|July 6, 2023

Summary

Poly lactic(co-glycolic acid)/wool keratin membranes with specific micro-groove topographies enhance bone and periodontal tissue regeneration. A 10 µm groove structure combined with periodontal ligament stem cell sheets shows significant potential for treating bone defects and periodontal disease.

Keywords:

Bone regeneration Cell sheet GTR membrane Periodontal tissue regeneration Topographical morphology

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Last Updated: Jul 24, 2025

Combination of Microstereolithography and Electrospinning to Produce Membranes Equipped with Niches for Corneal Regeneration

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Published on: September 12, 2014

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Published on: March 1, 2016

Author Spotlight: Developing a Unique Modular Microphysiological System to Mimic Human Barrier Tissue

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Published on: February 16, 2024

Area of Science:

Biomaterials Science
Tissue Engineering
Regenerative Medicine

Background:

Surface topography of tissue engineering scaffolds influences cellular behavior.
Guided tissue regeneration (GTR) membranes are crucial for tissue repair.
Poly lactic(co-glycolic acid) (PLGA)/wool keratin composites offer potential for GTR applications.

Purpose of the Study:

To investigate the effects of different micro-topographies on cell behavior.
To evaluate the potential of PLGA/wool keratin GTR membranes for bone and periodontal tissue regeneration.
To assess the efficacy of a 10 µm groove-structured membrane combined with cells or cell sheets.

Main Methods:

Fabrication of PLGA/wool keratin composite GTR membranes with nine distinct micro-topographies (pits, grooves, columns).
Assessment of cell adhesion, proliferation, and osteogenic differentiation on different membrane topographies using bone marrow mesenchymal stem cells (BMSCs) and periodontal ligament stem cells (PDLSCs).
Evaluation of ectopic osteogenesis, guided bone tissue regeneration, and guided periodontal tissue regeneration using the 10 µm groove-structured membrane in combination with cells or cell sheets.

Main Results:

The 2 µm pit-structured membrane showed the highest proliferation rates for BMSCs and PDLSCs.
The 10 µm groove-structured membrane demonstrated superior induction of osteogenic differentiation in BMSCs and PDLSCs.
The 10 µm groove-structured membrane/cell sheet complex significantly promoted bone and periodontal tissue repair and regeneration.

Conclusions:

Micro-topographical features on PLGA/wool keratin GTR membranes significantly impact stem cell behavior.
The 10 µm groove-structured membrane is optimal for inducing osteogenic differentiation and promoting tissue regeneration.
The combination of the 10 µm groove-structured membrane with cell sheets holds substantial promise for clinical applications in bone defect and periodontal disease treatment.