Graphene oxide (GO) is a nanomaterial that provokes autophagy in CT26 colon cancer cells and confers antitumor effects. Here we demonstrated that both GO and the chemotherapy drug cisplatin (CDDP) induced autophagy but elicited low degrees of CT26 cell death. Strikingly, GO combined with CDDP (GO/CDDP) potentiated the CT26 cell killing via necrosis.
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