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Modification of cellulose microfibers by polyglutamic acid and mesoporous silica nanoparticles for Enterovirus 71
Meiqing Sun1, Hong Wang1, Xiaoyan Li2
1Wuqing District Center for Disease Control and Prevention, Tianjin 301700, PR China.
Abstract:
In this study, we synthesized a novel kind of cellulose-based microfibers for efficient adsorption of Enterovirus 71 (EV71), the leading causative agent of life-threatening hand, foot and mouth disease. The initial cellulose microfibers (CEL) were activated by (3-aminopropyl) triethoxysilane (APTES), and then covalently modified by polyglutamic acid (PGA) and mesoporous silica nanoparticles (MSN), obtaining the microfibers CEL-PGA-MSN. Owing to the electrostatic interaction between the negatively charged components (i.e., PGA and MSN) and positively charged amino acids of the epitope of EV71 capsid protein VP2 (VP2-ep), the obtained microfibers strongly adsorbed the epitope, and exhibited high EV71-adsorption capacity. This study sheds a novel light on development of cellulose-based materials for application in virus-capturing equipment.
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