TABLE 3.

Comparison between organic nanoparticles (NPs) and inorganic NPs.

Types	Carrier	Advantages	Disadvantages
Organic NPs	PLGA	Multiple structures with good stability	Biocompatibility needs to be improved
	Exosome	Organic-targeted effect, sufficient source	Difficult to obtain high purity exosome, poor uniformity
	Liposome	Easy to obtain, good stability, biodegradable	Unstable for water-soluble drugs, short storage time
	……
Inorganic NPs	Au/Zn	Antibacterial or bacteriostatic property	Unstable
	CNT	Good Biocompatibility	Poor targeting ability
	QD	Targeting and bio-imaging ability	Biological toxicity
	……

NPs, nanoparticles (NPs); PLGA, Poly (lactic-co-glycolic acid); CNT, Carbon nanotube; QD, Quantum dot.