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tLyP-1-conjugated mesoporous silica nanoparticles for tumor targeting and penetrating hydrophobic drug delivery

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Abstract

Mesoporous silica nanoparticles (MSNs) are among the most appealing candidates for targeted drug delivery, a process for which it is essential that nanoparticles be internalized into targeted cells with high speed and efficiency. Therefore, it is necessary to conjugate a targeting ligand to the surface of a nanocarrier in order to trigger rapid receptor-mediated endocytosis and effective cellular uptake, which occurs following recognition and selective binding to a target cell’s membrane receptor. Here, a tumor targeting and penetrating drug delivery system (DDS) based on MSNs (~100 nm in size) is described. The MSNs were functionalized by engrafting with the tumor-homing and penetrating peptide tLyP-1. The fabricated MSN–tLyP-1 loaded with camptothecin (CPT) showed a robust targeting and penetrating efficiency to HeLa cells and MCF-7 cells and induced the death of these cells. Moreover, the adverse side effect of CPT on human mesenchymal stem cells (hMSCs) was minimized, because the nanoparticles were selectively targeted to the tumor cells, and little hydrophobic CPT was released into the culture medium or blood. The results indicate that the MSN–tLyP-1 DDS has great potential for the delivery of hydrophobic anticancer drugs to target tumors.

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Acknowledgments

This work was supported by JSPS KAKENHI Grant Nos. 23246024 and 24656085.

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Authors and Affiliations

  1. Department of Mechanical Science and Engineering, Nagoya University, Nagoya, 464-8603, Japan

    Baiyao Xu, Yang Ju & Yanbin Cui

  2. Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400030, People’s Republic of China

    Guanbin Song

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  1. Baiyao Xu
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  2. Yang Ju
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  3. Guanbin Song
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  4. Yanbin Cui
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Correspondence to Yang Ju.

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Xu, B., Ju, Y., Song, G. et al. tLyP-1-conjugated mesoporous silica nanoparticles for tumor targeting and penetrating hydrophobic drug delivery. J Nanopart Res 15, 2105 (2013). https://doi.org/10.1007/s11051-013-2105-4

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