“…The dosage forms of TET in market are tablets and injections, but they still have a series of problems such as poor water solubility, low oral bioavailability, and short half-life. Different TET drug delivery systems (DDS) have been developed, including polymer material nanoparticles (Li et al., 2012; Guo et al., 2015), liposomes (Fan et al., 2013; Jiawei 2014), magnetic nanoparticles (Cheng et al., 2012; Ren et al., 2012), microspheres (Cang & Guo, 2016; Shi et al., 2016) and mesoporous silica nanoparticles (Jia et al., 2015). These researches have solved the poor solubility problem and achieved the sustained release of TET in vivo to a certain extent.…”