Related Experiment Video
Updated: Aug 29, 2025
11:19
Silk Film Culture System for in vitro Analysis and Biomaterial Design
Published on: April 24, 2012
19.5K
Optically Clear Silk Fibroin Films with Tunable Properties for Potential Corneal Tissue Engineering Applications: A
Maya Beena1, Jimna Mohamed Ameer1, Naresh Kasoju1
1Division of Tissue Culture, Department of Applied Biology, Biomedical Technology Wing, Sree Chitra Tirunal Institute for Medical Science and Technology, Thiruvananthapuram 695012, Kerala, India.
ACS Omega
|September 5, 2022
Summary
Silk fibroin films offer a promising alternative for corneal tissue engineering. Processing conditions significantly influence film properties, enabling tailored biomaterials for ocular applications.
Area of Science:
- Biomaterials Science
- Ophthalmology
- Tissue Engineering
Background:
- Corneal transplantation faces donor shortages and transplantation challenges.
- Silk fibroin is a promising biomaterial for corneal tissue engineering due to its biocompatibility.
- Developing artificial corneal substitutes is crucial for addressing unmet clinical needs.
Purpose of the Study:
- To investigate the impact of different fabrication and annealing methods on silk fibroin film properties.
- To evaluate the suitability of silk fibroin films for corneal tissue engineering applications.
- To demonstrate the tunability of silk fibroin film characteristics through processing variations.
Main Methods:
- Silk fibroin films were fabricated using solvent casting with aqueous, formic acid, and HFIP solvents.
- Post-fabrication annealing was performed using water vapor, methanol vapor, and steam.
- Characterization included surface roughness, contact angle, water uptake, swelling, water vapor transmission, degradation, tensile strength, optical clarity, and in vitro cell culture.
Main Results:
- Fabrication solvents and annealing methods significantly altered surface roughness, contact angle, water uptake, swelling, and water vapor transmission.
- Degradation rates and tensile strength varied with processing conditions, with aqueous (aq) > hexafluoroisopropanol (HFIP) > formic acid (FA) for degradation and aq < HFIP < FA for tensile strength.
- Films maintained optical clarity (>90% transmission) and were non-cytotoxic and cytocompatible with corneal cells (L929 and SIRC cells).
Conclusions:
- Silk fibroin film properties can be effectively tuned by controlling fabrication and post-fabrication annealing conditions.
- These tunable silk fibroin films show significant potential as biomaterials for corneal tissue engineering.
- Further research can optimize processing for specific corneal regeneration applications.
