Dual Gate-Controlled Therapeutics for Overcoming Bacterium-Induced Drug Resistance and Potentiating Cancer Immunotherapy.
The presence of bacteria in the tumor can cause cancer resistance to chemotherapeutics. To fight against bacterium-induced drug resistance, herein we design self-traceable nanoreservoirs that are simultaneously loaded with gemcitabine (an anticancer drug) and ciprofloxacin (an antibiotic) and are decorated with hyaluronic acid for active tumor targeting. The nanoreservoirs have a pH-sensitive gate and an enzyme-responsive gate that can be opened in the acidic and hyaluronidase-abundant tumor microenvironment to control drug release rates. Moreover, the nanoreservoirs can specifically target the tumor regions without eliciting evident toxicity to normal tissues, kill the intratumoral bacteria, and inhibit the tumor growth even in the presence of the bacteria. Unexpectedly, the nanoreservoirs can activate T cell-mediated immune responses through promoting antigen-presenting dendritic cell maturation and depleting immunosuppressive myeloid-derived suppressor cells in bacterium-infected tumors.
['Zhang|Xiaodong|X|0000-0003-4137-3535', 'Chen|Xiaokai|X|0000-0002-0567-4325', 'Guo|Yuxin|Y|', 'Gao|Ge|G|', 'Wang|Dongdong|D|0000-0002-6278-0706', 'Wu|Yinglong|Y|0000-0002-4453-4827', 'Liu|Jiawei|J|0000-0003-4011-3950', 'Liang|Gaolin|G|0000-0002-6159-9999', 'Zhao|Yanli|Y|0000-0002-9231-8360', 'Wu|Fu-Gen|FG|0000-0003-1773-2868']
D000818:Animals D000900:Anti-Bacterial Agents D000964:Antimetabolites, Antineoplastic D002460:Cell Line D002939:Ciprofloxacin D003110:Colonic Neoplasms D003841:Deoxycytidine D024881:Drug Resistance, Bacterial D004926:Escherichia coli D006801:Humans D051379:Mice
drug resistance immunotherapy bacterial infection cancer therapy dual stimulus responsiveness