A graphene quantum dot-based FRET system for nuclear-targeted and real-time monitoring of drug delivery.
A graphene quantum dot-based FRET system is demonstrated for nuclear-targeted drug delivery, which allows for real-time monitoring of the drug release process through FRET signals. In such a system, graphene quantum dots (GQDs) simultaneously serve as the carriers of drugs and donors of FRET pairs. Additionally, a peptide TAT as the nuclear localization signal is conjugated to GQDs, which facilitates the transportation of the delivery system to the nucleus. We have demonstrated that: (a) both the conjugated TAT and small size of GQDs contribute to targeting the nucleus, which results in a significantly enhanced intranuclear accumulation of drugs; (b) FRET signals being extremely sensitive to the distance between donors and acceptors are capable of real-time monitoring of the separation process of drugs and GQDs, which is more versatile in tracking the drug release dynamics. Our strategy for the assembly of a FRET-based drug delivery system may be unique and universal for monitoring the dynamic release process. This study may give more exciting new opportunities for improving the therapeutic efficacy and tracking precision.
Advanced Photonics Center, Southeast University, 2# Sipailou, Nanjing 210096, Jiangsu, China. cyp@seu.edu.cn wangzy@seu.edu.cn.
Hui
H
Chen
Zhuyuan
Z
Wang
Shenfei
S
Zong
Peng
P
Chen
Dan
D
Zhu
Lei
L
Wu
Yiping
Y
Cui
D000970:Antineoplastic Agents / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D002470:Cell Survival / Q000187:drug effects; D004317:Doxorubicin / Q000737:chemistry / Q000493:pharmacokinetics / Q000494:pharmacology; D004337:Drug Carriers / Q000737:chemistry* / Q000493:pharmacokinetics / Q000633:toxicity; D016903:Drug Monitoring / Q000379:methods*; D031541:Fluorescence Resonance Energy Transfer / Q000379:methods*; D006108:Graphite / Q000737:chemistry* / Q000633:toxicity; D006367:HeLa Cells; D006801:Humans; D045663:Quantum Dots / Q000737:chemistry* / Q000633:toxicity
D000970:Antineoplastic Agents; D004337:Drug Carriers; D006108:Graphite; D004317:Doxorubicin