Abstract
Triptolide (TPL) has been employed to treat hepatocellular carcinoma (HCC). However, the poor water solubility of TPL restricts its applications. Therefore, we prepared TPL-loaded cyclodextrin-based metal–organic framework (TPL@CD-MOF) to improve the solubility and bioavailability of TPL, thus enhancing the anti-tumor effect on HCC. The BET surface and the pore size of TPL@CD-MOF were 10.4 m2·g−1 and 1.1 nm, respectively. The results of XRD indicated that TPL in TPL@CD-MOF was encapsuled. TPL@CD-MOF showed a slower release than free TPL in vitro. Moreover, the CD-MOF improved the bioavailability of TPL. TPL@CD-MOF showed slightly higher, but statistically significant, anti-tumor efficacy in vitro and in vivo compared to free TPL. In addition, TPL@CD-MOF exhibited a modest improvement of the anti-tumor effects, which may be associated to the enhanced in vivo absorption. Overall, these findings suggested the potential CD-MOF as oral drug delivery carriers for anti-tumor drugs.
Graphical abstract
The process of TPL loading into CD-MOF and its enhanced oral bioavailability and anti-tumor activity.
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Funding
This work was financially supported by the National Natural Science Foundation of China (No. 81903141, No. 81973275) and Shanghai Sailing Program (No. 20YF1424000).
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LZ, YG, and YY designed and participated equally all the experiments and article writing and should be considered as co-first authors. WR, WY, WJ, YM, and GC helped analyze the data and participated in some experiments.
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The animal experiment was approved by the Ethics Committee of Ninth People’s Hospital, affiliated with Shanghai Jiao Tong University School of Medicine before the research (approval number SH9H-2020-A144-1).
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Li, Z., Yang, G., Wang, R. et al. γ-Cyclodextrin metal–organic framework as a carrier to deliver triptolide for the treatment of hepatocellular carcinoma. Drug Deliv. and Transl. Res. 12, 1096–1104 (2022). https://doi.org/10.1007/s13346-021-00978-7
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DOI: https://doi.org/10.1007/s13346-021-00978-7