▎ 摘　　要

To use graphene oxide nanoribbons (GONRs) in combination with chemo-photothermal therapy, we modified GONRs with phospholipid-polyethylene glycol (PL-PEG) to prepare PEGylated GONRs (PL-PEG-GONRs), followed by investigation of the short-term in vivo bio-distribution of (99)mTc-labeled PL-PEG-GONRs and their excretion in mice. The (99)mTc-labeled PL-PEG-GONRs demonstrated a unique biodistribution pattern of rapid accumulation in and excretion from the liver. Moreover, we determined that the PL-PEG-GNORs were excreted from the body through the renal route in urine, and we used hematological analysis to show that the PL-PEG-GNORs were not toxic in vivo. Furthermore, doxorubicinloaded PL-PEG-GONRs had IC50 values for chemo-photothermal therapy toward U87 glioma cells that were 6.7-fold lower than the IC50 values in traditional chemotherapy. With these advantages, PL-PEG-GONRs could be used as drug nanocarriers to develop an efficient cancer-therapy strategy that would not only improve the efficacy of the therapy, but would also reduce the risk of side effects of the nanocarrier in the body. (C) 2014 Elsevier Ltd. All rights reserved.