Development of bullfrog collagen-based hydrogels as novel cellular encapsulants

Towards a zero-waste approach and sustainability in waste management, unwanted bullfrog skin was sought after for its abundant source of collagen. Collagen hydrogels were acknowledged for their beneficial attributes in regenerative medicine or tissue engineering. Yet, native collagen was unsuitable...

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Main Author: Lee, Jessica Heng Gei
Other Authors: Dalton Tay Chor Yong
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2022
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Online Access:https://hdl.handle.net/10356/160697
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1606972023-02-28T18:09:54Z Development of bullfrog collagen-based hydrogels as novel cellular encapsulants Lee, Jessica Heng Gei Dalton Tay Chor Yong School of Biological Sciences cytay@ntu.edu.sg Science::Biological sciences Towards a zero-waste approach and sustainability in waste management, unwanted bullfrog skin was sought after for its abundant source of collagen. Collagen hydrogels were acknowledged for their beneficial attributes in regenerative medicine or tissue engineering. Yet, native collagen was unsuitable for biomedical applications due to vulnerable characteristics. In this study, American bullfrogs (Rana catesbeianus) skin-derived collagen was subjected to methacrylation of different degrees by methacrylic anhydride (MAA) ranging from 0.1 to 3 ml/g of MAA to collagen, followed by photo-sensitive chemical cross-linking to develop methacrylated collagen (ColMA) hydrogel with good handle-ability and physicochemical stability as a cell encapsulant material. Collagen with a good preservation of the triple helical structure was successfully isolated, with ATR-FTIR analysis showing an absorbance peak intensity ratio of close to 1, and a denaturation temperature of 39.54°C. Hydrogels of different degrees of modifications were successfully fabricated and further characterized for its assessment as promising biomaterials in cell encapsulation. Our results indicated that ColMA hydrogel (1 ml/g MAA to collagen) demonstrated good modulus and long-term stability (> 21 days). In addition, crosslinked hydrogel exhibited significant improvement on the thermal stability with good cytocompatibility. Overall, modification and optimization of bullfrog skin-derived collagen was necessary to develop the most desirable cell-friendly hydrogel for encapsulation purposes. Bachelor of Science in Biomedical Sciences 2022-08-15T00:36:31Z 2022-08-15T00:36:31Z 2022 Final Year Project (FYP) Lee, J. H. G. (2022). Development of bullfrog collagen-based hydrogels as novel cellular encapsulants. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/160697 https://hdl.handle.net/10356/160697 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Science::Biological sciences
spellingShingle Science::Biological sciences
Lee, Jessica Heng Gei
Development of bullfrog collagen-based hydrogels as novel cellular encapsulants
description Towards a zero-waste approach and sustainability in waste management, unwanted bullfrog skin was sought after for its abundant source of collagen. Collagen hydrogels were acknowledged for their beneficial attributes in regenerative medicine or tissue engineering. Yet, native collagen was unsuitable for biomedical applications due to vulnerable characteristics. In this study, American bullfrogs (Rana catesbeianus) skin-derived collagen was subjected to methacrylation of different degrees by methacrylic anhydride (MAA) ranging from 0.1 to 3 ml/g of MAA to collagen, followed by photo-sensitive chemical cross-linking to develop methacrylated collagen (ColMA) hydrogel with good handle-ability and physicochemical stability as a cell encapsulant material. Collagen with a good preservation of the triple helical structure was successfully isolated, with ATR-FTIR analysis showing an absorbance peak intensity ratio of close to 1, and a denaturation temperature of 39.54°C. Hydrogels of different degrees of modifications were successfully fabricated and further characterized for its assessment as promising biomaterials in cell encapsulation. Our results indicated that ColMA hydrogel (1 ml/g MAA to collagen) demonstrated good modulus and long-term stability (> 21 days). In addition, crosslinked hydrogel exhibited significant improvement on the thermal stability with good cytocompatibility. Overall, modification and optimization of bullfrog skin-derived collagen was necessary to develop the most desirable cell-friendly hydrogel for encapsulation purposes.
author2 Dalton Tay Chor Yong
author_facet Dalton Tay Chor Yong
Lee, Jessica Heng Gei
format Final Year Project
author Lee, Jessica Heng Gei
author_sort Lee, Jessica Heng Gei
title Development of bullfrog collagen-based hydrogels as novel cellular encapsulants
title_short Development of bullfrog collagen-based hydrogels as novel cellular encapsulants
title_full Development of bullfrog collagen-based hydrogels as novel cellular encapsulants
title_fullStr Development of bullfrog collagen-based hydrogels as novel cellular encapsulants
title_full_unstemmed Development of bullfrog collagen-based hydrogels as novel cellular encapsulants
title_sort development of bullfrog collagen-based hydrogels as novel cellular encapsulants
publisher Nanyang Technological University
publishDate 2022
url https://hdl.handle.net/10356/160697
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