Enlisting a Traditional Chinese Medicine to tune the gelation kinetics of a bioactive tissue adhesive for fast hemostasis or minimally invasive therapy  

作　　者：Haoqi Tan Dawei Jin Junjie Sun Jialin Song Yao Lu Meng Yin Xin Chen Xue Qu Changsheng Liu 

机构地区：[1]Key Laboratory for Ultrafine Materials of Ministry of Education,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of Material Science and Engineering,East China University of Science and Technology,Shanghai,200237,China [2]Department of Cardiothoracic Surgery,Shanghai Children’s Medical Center,School of Medicine,Shanghai Jiao Tong University,1678 Dong Fang Road,Shanghai,200127,China

出　　处：《Bioactive Materials》2021年第3期905-917,共13页生物活性材料（英文）

基　　金：supported by National Natural Science Foundation of China(grant number:31922041,51621002,11932012 , 21875066);the science and technology innovation project of Shanghai Science and Technique Committee(18441908300);the Fundamental Research Funds for the Central Universities(SLD 00202006,JKVD12001032,JKVD12001002,50321041916015).

摘　　要：Gelation kinetics is important in tailoring chemically crosslinked hydrogel-based injectable adhesives for different applications.However,the regulation of gelation rate is usually limited to varying the gel precursor and/or crosslinker concentration,which cannot reach a fine level and inevitably alters the physical properties of hydrogels.Amidation reactions are widely used to synthesize hydrogel adhesives.In this work,we propose a traditional Chinese medicine(Borax)-input strategy to tune the gelation rate of amidation reaction triggered systems.Borax provides an initial basic buffer environment to promote the deprotonation process of amino groups and accelerate this reaction.By using a tissue adhesive model PEG-lysozyme(PEG-LZM),the gelation time can be modulated from seconds to minutes with varying Borax concentrations,while the physical properties remain constant.Moreover,the antibacterial ability can be improved due to the bioactivity of Borax.The hydrogel precursors can be regulated to solidify instantly to close the bleeding wound at emergency.Meanwhile,they can also be customized to match the flowing time in the catheter,thereby facilitating minimally invasive tissue sealing.Because this method is easily operated,we envision Borax adjusted amidation-type hydrogel has a promising prospect in clinical application.

关 键 词：Injectable tissue adhesive Gelation time BORAX Rapid hemostasis Minimally invasive delivery 

分 类 号：TQ427.26[化学工程]