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Fabrication of adhesive hydrogel based on phenol-conjugated chitosan via high affinity enzymatic crosslinking for wet tissue adhesion : 습윤조직 접착을 위한 효소 가교 기반의 키토산-페놀 하이드로겔 제작

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dc.contributor.advisorNathaniel Suk-Yeon Hwang-
dc.contributor.author김수현-
dc.date.accessioned2023-11-20T04:26:58Z-
dc.date.available2023-11-20T04:26:58Z-
dc.date.issued2023-
dc.identifier.other000000179022-
dc.identifier.urihttps://hdl.handle.net/10371/196578-
dc.identifier.urihttps://dcollection.snu.ac.kr/common/orgView/000000179022ko_KR
dc.description학위논문(석사) -- 서울대학교대학원 : 공과대학 화학생물공학부, 2023. 8. Nathaniel Suk-Yeon Hwang.-
dc.description.abstractPolyphenols are attractive functional groups since they can attribute versatile properties of hydrogels such as adhesiveness, anti-inflammation, and antibacterial activity. In addition, tyrosinase is a competent enzyme which can turn polyphenol into a reactive form. In this study, we report the fabrication of chitosan-based hydrogels which are conjugated with 3 kinds of polyphenols, catechol, monophenol, and gallic acid, using enzyme-mediated crosslinking. The tyrosinase-mediated oxidative reaction of phenolic rings results in faster transition of polyphenols than auto-oxidation. The amount of phenol rings in hydrogel is also related to the properties of hydrogel. When phenol rings are introduced into hydrogels, the intrinsic properties of chitosan-based hydrogels such as adhesive, antibacterial, and antioxidant effects are improved. This demonstrates that polyphenol-incorporated and tyrosinase crosslinked hydrogel may provide a robust tissue adhesive platform for clinical applications.-
dc.description.abstract폴리페놀은 접착성, 항염증 및 항균 활성과 같은 하이드로겔의 다양한 특성을 나타낼 수 있기 때문에 매력적인 작용기입니다. 또한 타이로시네이즈는 폴리페놀을 반응성 형태로 전환할 수 있는 유능한 효소입니다. 본 연구에서는 효소매개 가교결합을 이용하여 카테콜, 모노페놀, 갈산 등 3종의 폴리페놀이 결합된 키토산 기반 하이드로젤의 제조에 대해 보고한다. 페놀 고리의 타이로시네이즈 매개 산화 반응은 자연 산화보다 폴리페놀의 더 빠른 전이를 초래합니다. 하이드로겔의 페놀 고리 양은 하이드로겔의 특성과도 관련이 있습니다. 하이드로겔에 페놀 고리를 도입하면 키토산 기반 하이드로겔 고유의 접착성, 항균성, 항산화 효과 등의 특성이 향상된다. 이는 폴리페놀 통합 및 타이로시네이즈 가교 하이드로겔이 임상 적용을 위한 강력한 조직 접착 플랫폼을 제공할 수 있음을 보여줍니다.-
dc.description.tableofcontentsAbstract
1. Introduction
2. Materials and methods
2.1 Synthesis of modified chitosan
2.2 Expression and purification of tyrosinase from Streptomyces avermitilis (SA-Ty)
2.3 Quantificative analysis of quinones
2.4 Measurement of tissue adhesive properties
2.5 Antibacterial assay
2.6 Radical scavenging assay
2.7 Statistical analysis
3. Results and discussion
3.1 Chracterization of chitosan variants
3.2 Quantitative analysis of quinones
3.3 Adhesion test
3.4 Antibacterial assay
3.5 Radical scavenging assay
3.6 Application of enzyme-mediated adhesive hydrogel : The controllable closure system for varicose veins
References
국문초록
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dc.format.extent21-
dc.language.isoeng-
dc.publisher서울대학교 대학원-
dc.subjectAdhesive hydrogel-
dc.subject.ddc660.6-
dc.titleFabrication of adhesive hydrogel based on phenol-conjugated chitosan via high affinity enzymatic crosslinking for wet tissue adhesion-
dc.title.alternative습윤조직 접착을 위한 효소 가교 기반의 키토산-페놀 하이드로겔 제작-
dc.typeThesis-
dc.typeDissertation-
dc.contributor.AlternativeAuthorSuhyeon Kim-
dc.contributor.department공과대학 화학생물공학부-
dc.description.degree석사-
dc.date.awarded2023-08-
dc.identifier.uciI804:11032-000000179022-
dc.identifier.holdings000000000050▲000000000058▲000000179022▲-
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