Recent Advances on Graphene Quantum Dots as Multifunctional Nanoplatforms for Cancer Treatment

Graphene quantum dots (GQDs), the latest member of the graphene family, have attracted enormous interest in the last few years, due to their exceptional physical, chemical, electrical, optical, and biological properties. Their strong size-dependent photoluminescence and the presence of many reactive groups on the graphene surface allow their multimodal conjugation with therapeutic agents, targeting ligands, polymers, light responsive agents, fluorescent dyes, and functional nanoparticles, making them valuable agents for cancer diagnosis and treatment. In this review, the very recent advances covering the last 3 years on the applications of GQDs as drug delivery systems and theranostic tools for anticancer therapy are discussed, highlighting the relevant factors which regulate their biocompatibility. Among these factors, the size, kind, and degree of surface functionalization have shown to greatly affect their use in biological systems. Toxicity issues, which still represent an open challenge for the clinical development of GQDs based therapeutic agents, are also discussed at cellular and animal levels.

Automated summary

Graphene quantum dots (GQDs) have attracted great interest for their exceptional properties and potential applications in cancer diagnosis and treatment. Factors such as size, surface functionalization, and biocompatibility play crucial roles in determining the effectiveness of GQDs in biological systems. Toxicity issues remain a challenge for the clinical development of GQDs-based therapeutic agents, and further research is needed to address this.