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Transferrin receptor-targeted HMSN for sorafenib delivery in refractory differentiated thyroid cancer therapy

Authors Ke Y, Xiang C

Received 12 September 2018

Accepted for publication 6 November 2018

Published 6 December 2018 Volume 2018:13 Pages 8339—8354

DOI https://doi.org/10.2147/IJN.S187240

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Colin Mak

Peer reviewer comments 2

Editor who approved publication: Dr Mian Wang


You Ke,1 Cheng Xiang2

1Department of Nephrology, The Second Affiliated Hospital of Zhejiang University, Hangzhou, China; 2Department of Surgery, The Second Affiliated Hospital of Zhejiang University, Hangzhou, China

Background: Thyroid cancer becomes the most common endocrine cancer with the greatest growing incidence in this decade. Sorafenib is a multikinase inhibitor for the treatment of progressive radioactive iodine-refractory differentiated thyroid cancer (DTC), while the off-target toxicity effect is usually inconvenient for patients taking.
Methods: In this study, hollow mesoporous silica nanoparticles (HMSNs) with transferrin modification (Tf-HMSNs) were loaded with sorafenib (sora@Tf-HMSNs) to help targeted delivery of sorafenib. Due to the biocompatible Tf shell, Tf-HMSNs exhibited excellent biocompatibility and increased intracellular accumulation, which improved the targeting capability to cancer cells in vitro and in vivo.
Results: Sora@Tf-HMSNs treatment exhibited the strongest inhibition effect of res-TPC-1 cells and res-BCPAP cells compared with sora@HMSNs and sorafenib groups and induced more cancer cell apoptosis. Finally, Western blot analysis was conducted to check the expression of RAF/MEK/ERK signaling pathway after sorafenib encapsulated Tf-HMSNs treatment.
Conclusion: Overall, sora@Tf-HMSNs can significantly increase the effective drug concentration in cancer cells and thus enhance the anticancer effect, which are expected to be promising nanocarriers to deliver anticancer drugs for effective and safe therapy for RAI-refractory DTC.

Keywords: sorafenib, RAI-refractory DTC, hollow mesoporous silica nanoparticles, transferrin, RAF/MEK/ERK

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