Biological evaluations of decellularized extracellular matrix collagen microparticles prepared based on plant enzymes and aqueous two-phase method  

作　　者：YaWen Liu Ching-Cheng Huang YuanYuan Wang Jun Xu GuoDing Wang XinPeng Bai 

机构地区：[1]Engineering Research Center of Utilization of Tropical Polysaccharide Resources,College of Food Science and Technology,Hainan University,Haikou,Hainan 570000,China [2]PARSD Biomedical Material Research Center(PBMRC),Changzhou,Jiangsu 213000,China [3]Department of Biomedical Engineering,Ming-Chuan University,Taoyuan 320-33,Taiwan

出　　处：《Regenerative Biomaterials》2021年第2期64-73,共10页再生生物材料（英文版）

基　　金：This work was supported by key scientific research project plan of colleges and universities in Hainan Province(RZ2000001667);Changzhou PARSD Biomedical Material Research Center(RH2000003058).

摘　　要：For patients with extensive full-thickness burns who do not have sufficient autologous splitthickness skin for skin grafts,the application of biological skin substitutes may be considered.The aim of this study was to find an optimal new type method for the production of a biovital skin substitute based on acellular dermal matrix(ADM)and preclinical evaluations.In this work,25 methods of ADM production were assessed.The proposed methods are based on the use of the following enzymes:papain,Carica papaya lipase(CPL),and purification using a polymer/salt aqueous two-phase system.The obtained ADM samples were characterized via scanning electron microscopy(SEM),porosity measurement and water vapor transmission test.Results showed that the collagen bundles of ADM microparticles were intact and orderly.Through differential scanning calorimetry(DSC),thermo gravimetric analysis(TGA)and biocompatibility tests,the results indicated that the proportion of papain and CPL was the same and 5 h processing time are the optimum conditions for ADM preparation and the material showed good biocompatibility.Our results suggested that the potential of developing this kind of decellularization process to manufacture ADM scaffolds for clinical application.

关 键 词：acellular dermal matrix PAPAIN Carica papaya lipase aqueous two-phase extraction 

分 类 号：R318[医药卫生—生物医学工程]