Biomimetic Redox-Responsive Mesoporous Organosilica Nanoparticles Enhance Cisplatin-Based Chemotherapy.

Abstract

Cisplatin-based chemotherapy is dominated in several cancers; however, insufficient therapeutic outcomes and systemic toxicity hamper their clinical applications. Controlled release of cisplatin and reducing inactivation remains an urgent challenge to overcome. Herein, diselenide-bridged mesoporous organosilica nanoparticles (MON) coated with biomimetic cancer cell membrane were tailored for coordination responsive controlled cisplatin delivery and GSH depletion to strengthen Pt-based chemotherapy. Cisplatin-loaded MON (MON-Pt) showed high loading capacity due to robust coordination between selenium and platinum atoms and preventing premature leakage in normal tissue. MON-Pt exhibited a controlled release of activated cisplatin in response to the redox tumor microenvironment. Meanwhile, MON-Pt containing redox-responsive diselenide bonds could efficiently scavenge intracellular inactivation agents, such as GSH, to enhance Pt-based chemotherapy. 4T1 breast cancer cell membranes cloaked MON-Pt (MON-Pt@CM) performed efficient anticancer performance and low in vivo system toxicity due to long blood circulation time and high tumor accumulation benefiting from the tumor targeting and immune-invasion properties of the homologic cancer cell membrane. These results suggest a biomimetic nanocarrier to control release and reduce the inactivation of cisplatin for efficient and safe Pt-based chemotherapy by responding and regulating the tumor microenvironment.

• Authors: Fangman Chen, Fan Zhang, Yanbin Wang, Jiahui Peng, Lei Cao, Qian Mei, Mingfeng Ge, Li Li, Meiwan Chen, Wen-Fei Dong, Zhimin Chang
• Journal: Frontiers in bioengineering and biotechnology (Front Bioeng Biotechnol) Vol. 10 Pg. 860949 ( 2022) ISSN: 2296-4185 [Print] Switzerland
• PMID: 35372319 (Publication Type: Journal Article)
• Copyright: Copyright © 2022 Chen, Zhang, Wang, Peng, Cao, Mei, Ge, Li, Chen, Dong and Chang.