| Protecting probes from enzymatic degradation[26] | Good biocompatibility, editability, high stability and ease of preparation[5] | Biological stability, maximum load and structural controllability still need to be improved |
| Being as biological vectors; tumor drug delivery for precise targeting therapy [9-13] | Targeted action, enhanced drug stability and uptake efficiency [6-7] | Biosafety to be verified; lack of systematic research on long-term impacts |
| Treating inflammatory diseases, acting as immunomodulators [15-19] | Regulating inflammation and immune response [15-19] | Most of them are animal experiments, and the effect on human beings is yet to be proved |
| Promoting tissue regeneration [23-25] | Promoting stem cell proliferation and differentiation and migration [23-25] | The specific mechanisms of interaction with molecules and organisms are less studied. |