Figure 4.

In vitro redox-responsive behaviors of CHT NPs. (A) TEM image of CHT NPs before (left) and after (right) 24 h of DTT incubation (20 mM) (scale bar: 200 emission spectra of DMA in different Ce6-containing formulations at an excitation wavelength of 360 nm. (D) In vitro release profiles of PTX from CHT NPs in the nm). (B) Fluorescence emission spectra of Ce6 in PBS (pH 7.4, 10 mM) with or without DTT incubation (excitation wavelength: 405 nm). (C) The fluorescence absence and presence of DTT (20 μM or 20 mM). Data were represented as mean ± SD (n = 3).