L-EGCG-Mn nanoparticles as a pH-sensitive MRI contrast agent

Jiali Li, Xue Jiang, Lihuan Shang, Zhen Li, Conglian Yang, Yan Luo, Daoyu Hu, Yaqi Shen & Zhiping Zhang
This study aimed to synthesize and characterize L-epigallocatechin gallate (EGCG) complexed Mn2+ nanoparticle (L-EGCG-Mn), a proof-of-concept pH-sensitive manganese core nanoparticle (NP), and compare its magnetic resonance (MR) properties with those of Gd-DTPA, both in vitro and in vivo. Reverse microemulsion was used to obtain the L-EGCG-Mn NPs. The physicochemical properties of L-EGCG-Mn were characterized using dynamic light scattering, transmission electron microscopy, and near-infrared fluorescence small animal live imaging. The in vitro relaxivity of L-EGCG-Mn incubated...
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