表皮调节素EREG在新生隐球菌穿越血脑屏障机制中的作用研究  

Mechanisms of EREG incryptococcal traversal of the blood-brain barrier

作　　者：赵静宇 刘意抒 丁俊丽 高杨杰 徐乐臻 廖万清 方伟 顾菊林 ZHAO Jingyu;LIU Yishu;DING Junli;GAO Yangjie;XU Lezhen;LIAO Wanqing;FANG Wei;GU Junlin(Department of Dermatology,Shanghai Eastern Hepatobiliary Surgery Hospital,Shanghai 200438,China;Teaching and Research section,Shanghai Eastern Hepatobiliary Surgery Hospital,Shanghai 200438,China;Shanghai key laboratory of MoleculaRMycology,Department of Dermatology,Chang zheng Hospital,Shanghai 200003,China;Department of LaseRand Aesthetic Medicine,Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai 200011,China)

机构地区：[1]上海东方肝胆外科医院皮肤科,上海200438 [2]上海东方肝胆外科医院内科教研室,上海200438 [3]上海长征医院皮肤科,上海市医学真菌分子生物学重点实验室,上海200003 [4]上海市第九人民医院激光美容科,上海200125

出　　处：《中国真菌学杂志》2023年第4期310-314,共5页Chinese Journal of Mycology

基　　金：国家自然科学基金青年培育项目(2021GZR007);医工交叉研究青年培育项目(2021YGJC004);国家自然科学基金(81772159,82072259)。

摘　　要：目的测定新生隐球菌侵染血脑屏障过程中表皮调节素EREG(epiregulin)的表达量,探讨EREG在隐球菌穿越血脑屏障过程中的作用。方法利用新生隐球菌与Transwell小室构建体外血脑屏障模型,以PBS(phosphate buffered solution)为对照组,按照新生隐球菌感染时间分为感染3 h、6 h、12 h三组,通过检测不同感染时间Transwell上室单细胞跨膜电阻及下室菌悬液涂布来判断新生隐球菌对血脑屏障的黏附及穿透能力的改变,并应用western-blot检测该过程中血管内皮细胞EREG的表达量。结果随着感染时间延长,新生隐球菌对血管内皮细胞的感染程度加剧,穿透血脑屏障的数量增多,血管内皮细胞EREG的表达水平显著增加。结论新生隐球菌穿越血脑屏障的能力与EREG的表达水平有密切的关系。Objective To determine the expression level of EREG in the blood-brain barrieRinfected by Cryptococcus neoformans and to explore the role of EREG crossing the blood-brain barrier.Methods To construct the model of blood brain barrieRin vitro by using Cryptococcus neoformans and Transwell chamber,and PBS was used as the control group.According to the time of Cryptococcus infection,divided into three groups:3 h,6 h and 12 h.The changes of the adhesion and penetration ability of Cryptococcus to the blood-brain barrieRwere detected by detecting the transmembrane resistance of single cells in the uppeRchambeRof the Transwell and the suspension coating in the loweRchambeRof the Transwell at different time of infection,and the expression level of EREG in vasculaRendothelial cells during the process was detected.Results The expression of EREG was significantly increased and positively correlated with the time of infection during the course of cryptococcal infection with microvasculaRendothelial cells.Conclusion These results indicated that the ability of Cryptococcus to cross the blood-brain barrieRwas closely related to the expression level of EREG.

关 键 词：新生隐球菌 EREG 血脑屏障 

分 类 号：R379.5[医药卫生—病原生物学]