免疫系统
移植
材料科学
生物医学工程
纳米技术
医学
免疫学
外科
作者
Gao Tang,Ya Wu,Wenyuan Wang,Cheng Deng,Yihan Chen,Luyang Yi,Yishu Song,Wenqu Li,Lingling Xu,Yuji Xie,Lingyun Fang,Qiaofeng Jin,Li Zhang,Ben Zhong Tang,Mingxing Xie
出处
期刊:ACS Nano
[American Chemical Society]
日期:2021-07-15
卷期号:15 (7): 11908-11928
被引量:21
标识
DOI:10.1021/acsnano.1c03029
摘要
Real-time monitoring of post-transplant immune response is critical to prolong the survival of grafts. The current gold standard for assessing the immune response to graft is biopsy. However, such a method is invasive and prone to false negative results due to limited tissue size available and the heterogeneity of the rejection site. Herein, we report biomimetic glucan particles with aggregation-induced emission (AIE) characteristics (HBTTPEP/GPs) for real-time noninvasive monitoring of post-transplant immune response. We have found that the positively charged near-infrared AIEgens can effectively aggregate in the confined space of glucan particles (GPs), thereby turning on the fluorescence emission. HBTTPEP/GPs can track macrophages for 7 days without hampering the bioactivity. Oral administration of HBTTPEP/GPs can specially target macrophages by mimicking yeast, which then migrate to the transplant rejection site. The fluorescence emitted from HBTTPEP/GPs correlated well with the infiltration of macrophages and the degree of allograft rejection. Furthermore, a single oral HBTTPEP/GPs dose can dynamically evaluate the therapeutic response to immunosuppressive therapy. Consequently, the biomimetic AIE-active glucan particles can be developed as a promising probe for immune-monitoring in solid organ transplantation.
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