Graphene oxide complex as a pH-sensitive antitumor drug

Literature Information

Publication Date 2015-01-29
DOI 10.1039/C5PY00047E
Impact Factor 5.582
Authors

Rumei Cheng, Ruitao Zou, Shengju Ou, Rui Guo, Ruiying Yan, Haiyan Shi, Shanshan Yu, Xiaojian Li, Yexu Bu, Mimi Lin, Yong Liu


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Abstract

A pH-sensitive, nanostructured antitumor drug, GO-CONH-Schiff base (GCS), was prepared from the chitosan-xanthone Schiff base (CS)-modified graphene oxide (GO) complex. The successful synthesis of GCS was confirmed using various spectroscopic techniques, including FT-IR, XPS, UV-vis and TGA. The resulting GCS showed superb antitumor activity with the pH-sensitive release of the antitumor part, CS, and decreased cytotoxicity of GCS to normal human cells. The release of CS was stable and thorough in the solution at pH 1 (the pH value for gastric juice), suggesting that the as-synthesized, pH-sensitive drug could provide new insights into the design of advanced nanostructured oral drugs.

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