Sci. Adv.: Oral polyphenol-armored nanomedicine for targeted modulation of gut microbiota–brain interactions in colitis

Title：

Oral polyphenol-armored nanomedicine for targeted modulation of gut microbiota–brain interactions in colitis

Authors：

Huan He^1,2, Qiaozhen Qin³, Fang Xu⁴, Yitong Chen⁴, Shuquan Rao⁵, Chao Wang⁴*, Xiaoxia Jiang³*, XiongLu^1,2*, Chaoming Xie^1,2*

Institutions：

¹Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, Sichuan, China.

²Key Laboratory of Advanced Technologies of Materials Ministry of Education, School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China.

³Beijing Institute of Basic Medical Sciences, Beijing, 100850, China.

⁴Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou, Jiangsu 215123, China.

⁵State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences& Peking Union Medical College, Tianjin, 300020, China

Abstract：

Developing oral nanomedicines that suppress intestinal inflammation while modulating gut microbiota and brain interactions is essential for effectively treating inflammatory bowel disease. Here, we report an oral polyphenol-armored nanomedicine based on tumor necrosis factor–α (TNF-α)–small interfering RNA and gallic acid–mediated graphene quantum dot (GAGQD)–encapsulated bovine serum albumin nanoparticle, with a chitosan and tannin acid (CHI/TA) multilayer. Referred to “armor,” the CHI/TA multilayer resists the harsh environment of the gastrointestinal tract and adheres to inflamed colon sites in a targeted manner. TA provides antioxidative stress and prebiotic activities that modulate the diverse gut microbiota. Moreover, GAGQD protected TNF-α–siRNA delivery. Unexpectedly, the armored nanomedicine suppressed hyperactive immune responses and modulated bacterial gut microbiota homeostasis in a mouse model of acute colitis. Notably, the armored nanomedicine alleviated anxiety- and depression-like behaviors and cognitive impairment in mice with colitis. This armor strategy sheds light on the effect of oral nanomedicines on bacterial gut microbiome-brain interactions.

IF：

14.957

Link：

https://www.science.org/doi/10.1126/sciadv.adf3887