PMID- 35504031 OWN - NLM STAT- MEDLINE DCOM- 20220519 LR - 20220602 IS - 1477-0539 (Electronic) IS - 1477-0520 (Linking) VI - 20 IP - 19 DP - 2022 May 18 TI - A fluorescent, chirality-responsive, and water-soluble cage as a multifunctional molecular container for drug delivery. PG - 3998-4005 LID - 10.1039/d2ob00520d [doi] AB - In recent years, the rational design and construction of drug delivery systems (DDSs) via a supramolecular approach for improving chemical therapeutics have gained significant attention. Here, we report a host-guest DDS formed from a fluorescent, chirality-responsive, and water-soluble tetraphenylethene-based octacationic cage as a fluorescent/chiral probe, solubilizer, and molecular cargo, which can recognize chiral nucleoside drugs, enhance the solubility of insoluble drugs, and protect drugs from the outside environment by forming host-guest complexes in aqueous solution. Given the fluorescence properties and dynamically rotational conformation of tetraphenylethene (TPE) units, this fluorescent and chirality-responsive cage exhibits different responses including turn-on/turn-off fluorescence and negative/positive circular dichroism (CD) when binding with different chiral nucleoside drugs in water, resulting in multiple-responsive photophysical behaviors for these chiral drugs. Furthermore, this water-soluble cationic cage with a hydrophobic cavity can improve the water solubility of insoluble drugs (e.g., CPT) by forming host-guest complexes in water. More importantly, this multifunctional cage exhibits a low toxicity to both human colon and breast cancer cell lines in vitro, and drugs encapsulated by the cage are more effective in killing cancer cells than drugs alone. Finally, the on-off-on fluorescence responses in the formation and dissociation processes of the cage supersetdrug complexes have been successfully used to monitor drug release and track drug delivery by fluorescence microscopy in vitro. Therefore, this fluorescent, chirality-responsive, and water-soluble cage as a multifunctional molecular container can be used to construct a smart drug delivery system with several functions of fluorescence and CD detection, water solubilization, real-time monitoring, and chemotherapy. FAU - Duan, Yanjuan AU - Duan Y AD - College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China. chcaoliping@nwu.edu.cn. FAU - Wang, Jingjing AU - Wang J AD - School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, P. R. China. zhang2008@mail.xjtu.edu.cn. FAU - Cheng, Lin AU - Cheng L AD - College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China. chcaoliping@nwu.edu.cn. FAU - Duan, Honghong AU - Duan H AD - College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China. chcaoliping@nwu.edu.cn. FAU - Tian, Ping AU - Tian P AD - College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China. chcaoliping@nwu.edu.cn. FAU - Zhang, Yanmin AU - Zhang Y AUID- ORCID: 0000-0001-7307-9408 AD - School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, P. R. China. zhang2008@mail.xjtu.edu.cn. FAU - Cao, Liping AU - Cao L AUID- ORCID: 0000-0002-1747-6107 AD - College of Chemistry and Materials Science, Northwest University, Xi'an 710069, P. R. China. chcaoliping@nwu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220518 PL - England TA - Org Biomol Chem JT - Organic & biomolecular chemistry JID - 101154995 RN - 0 (Nucleosides) RN - 059QF0KO0R (Water) SB - IM MH - Drug Delivery Systems MH - Humans MH - Molecular Conformation MH - *Nucleosides MH - Solubility MH - *Water/chemistry EDAT- 2022/05/04 06:00 MHDA- 2022/05/20 06:00 CRDT- 2022/05/03 17:32 PHST- 2022/05/04 06:00 [pubmed] PHST- 2022/05/20 06:00 [medline] PHST- 2022/05/03 17:32 [entrez] AID - 10.1039/d2ob00520d [doi] PST - epublish SO - Org Biomol Chem. 2022 May 18;20(19):3998-4005. doi: 10.1039/d2ob00520d.