A novel nanogel delivery of poly-α, β-polyasparthydrazide by reverse microemulsion and its redox-responsive release of 5-Fluorouridine

To achieve GSH-responsive 5-Fluorouridine (5-FU) delivery, a novel family of nanogel drug carriers has been successfully prepared. The new class of PAHy-based nanogels was prepared by the crossing-link reaction of poly- α , β -polyasparthydrazide (PAHy) chains and 3,3′-dithiodipropionic acid (DTDPA) consisting of a redox-responsive chain network. This particle highlights recent efforts in introducing a disulfide bond to drug delivery nanogel by DTDPA, and the increased release properties of complex nanogels produced excellent glutathione (GSH)-sensitivity and significant anti-tumor therapeutic efficacy. The PAHy-based nanogels were characterized by Fourier transform infrared spectroscopy (FT-IR), dynamic light scattering (DLS) (nano-particle size ~200 nm), UV–vis spectrometry, X-ray diffraction (XRD) and differential scanning calorimetric (DSC). PAHy-based nanogels are promising controlled-release carriers for the tumor-targeting delivery of the anticancer agent 5-Fluorouridine.