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A Novel Graphene Quantum Dot-Based mRNA Delivery Platform.

Ya Liu1,2, Changhong Zhao1,3, Alan Sabirsh4

  • 1Department of Microtechnology and Nanoscience, Chalmers University of Technology, 9 Kemivägen, Gothenborg, 412 96, Sweden.

Chemistryopen
|April 8, 2021
PubMed
Summary
This summary is machine-generated.

Graphene quantum dots (GQDs) modified with polyethyleneimine (PEI) effectively deliver intact messenger RNA (mRNA) into liver cancer cells. This novel system shows promise as a non-toxic and stable therapeutic delivery method.

Keywords:
drug deliveryfunctionalizationgraphene quantum dotshepatocarcinomamRNA

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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Molecular Biology

Background:

  • Therapeutic messenger RNA (mRNA) requires effective delivery systems to overcome cell membrane barriers and degradation.
  • Current drug delivery systems face challenges with cellular uptake and potential toxicity.
  • Graphene quantum dots (GQDs) are emerging as versatile nanomaterials for biomedical applications.

Purpose of the Study:

  • To develop and evaluate a novel mRNA delivery system using functionalized graphene quantum dots (GQDs).
  • To assess the efficacy and safety of GQD-based mRNA delivery in hepatocarcinoma cells.
  • To establish a stable, manufacturable, and effective platform for mRNA therapeutics.

Main Methods:

  • Synthesis of polyethyleneimine (PEI)-functionalized graphene quantum dots (GQDs).
  • Complexation of mRNA with functionalized GQDs.
  • In vitro delivery of mRNA-GQD complexes to Huh-7 hepatocarcinoma cells.
  • Assessment of mRNA integrity, cellular uptake, functionality, and cytotoxicity.

Main Results:

  • Functionalized GQDs successfully delivered intact and functional mRNA to Huh-7 cells at low doses.
  • The GQD-based delivery system demonstrated minimal toxicity in the studied cell lines.
  • The synthesized GQD-PEI complexes were stable and easy to manufacture.
  • Cellular toxicity, a known issue with first-generation particles, was observed but manageable.

Conclusions:

  • Polyethyleneimine-functionalized graphene quantum dots represent a promising novel system for therapeutic mRNA delivery.
  • This GQD-based system offers advantages in terms of stability, manufacturability, and effectiveness.
  • Further development of GQD-based delivery systems could overcome current limitations in mRNA-based therapies.