“…On the other hand, the controlled release of anticancer drugs can be achieved through the fine-tuning of the chemical properties of constituent materials used in NP fabrication. At present, commonly used biomaterials for nanodrug formulations include lipids (e.g., liposomes, lipid nanoparticles), − polymers (e.g., PLGA, PLA, chitosan, alginate), and proteins (e.g., collagen, gelatin, silk, albumin). ,− Gelatin is a natural protein that can be obtained by partial acid or alkali hydrolysis, thermal degradation, or enzymatic degradation of structural animal collagen . Compared with collagen, gelatin does not express antigenicity in vivo and is easy to dissolve in an aqueous solution .…”