A graphene quantum dot-based FRET system for nuclear-targeted and real-time monitoring of drug delivery

Nanoscale
Hui ChenYiping Cui

Abstract

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.

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Citations

Feb 10, 2018·Journal of Drug Targeting·Asadullah MadniMuhammad Imran Khan
Jun 20, 2019·Chemical Society Reviews·Khadijeh NekoueianSabine Szunerits
Sep 25, 2020·Expert Opinion on Drug Delivery·Joydeb Majumder, Tamara Minko
Oct 7, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Riya Sinha, Pradipta Purkayastha
Jul 7, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Keheng LiGang Wei
Dec 7, 2016·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Quan XuNeng Li
Aug 28, 2017·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Daniela IannazzoAlessandro Pistone
Mar 2, 2021·Materials Science & Engineering. C, Materials for Biological Applications·Amany M SawyAhmed S G Khalil
May 29, 2019·ACS Applied Materials & Interfaces·Peng GaoBo Tang
Jul 10, 2019·Chemical Reviews·Nishtha PanwarXiaoyuan Chen
Aug 13, 2018·ACS Biomaterials Science & Engineering·Krishanu Ghosal, Kishor Sarkar

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