Carboxymethyl cellulose-grafted graphene oxide for efficient antitumor drug delivery

Author:

Jiao Zepeng1,Zhang Bin2,Li Chunya2,Kuang Weicong2,Zhang Jingxian2,Xiong Yongqiang2,Tan Shaozao2,Cai Xiang3,Huang Langhuan2

Affiliation:

1. Analysis and Test Center , Jinan University , Guangzhou 510632 , P.R. China

2. Guangdong Engineering and Technology R&D Center of Graphene or Its Like Materials and Products , Department of Chemistry , Jinan University , Guangzhou 510632 , P.R. China

3. Department of Light Chemical Engineering , Guangdong Polytechnic , Foshan 528041 , P.R. China

Abstract

Abstract A drug delivery system based on carboxymethyl cellulose-grafted graphene oxide loaded by methotrexate (MTX/CMC-GO) with pH-sensitive and controlled drug-release properties was developed in this work. CMC was grafted on graphene oxide by ethylenediamine through hydrothermal treatment. CMC serves as a pH-sensitive trigger, while CMC-GO serves as a drug-carrying vehicle due to the curved layer and large plain surface. Different amounts of drugs could be loaded into CMC-GO nanocarriers by control of the original amount of drug/carrier ratios. Additionally, low cytotoxicity against NIH-3T3 cells and low in vivo toxicity was observed. In vivo tumor growth inhibition assays showed that MTX/CMC-GO demonstrated superior antitumor activity than free MTX against HT-29 cells. Moreover, prolonged survival time of mice was observed after MTX/CMC-GO administration. The MTX/CMC-GO drug delivery system has a great potential in colon cancer therapy.

Publisher

Walter de Gruyter GmbH

Subject

Surfaces, Coatings and Films,Process Chemistry and Technology,Energy Engineering and Power Technology,Biomaterials,Medicine (miscellaneous),Biotechnology

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