Issue 16, 2014

A microfluidic method to synthesize transferrin-lipid nanoparticles loaded with siRNA LOR-1284 for therapy of acute myeloid leukemia

Abstract

The siRNA LOR-1284 targets the R2 subunit of ribonucleotide reductase (RRM2) and has shown promise in cancer therapy. In this study, transferrin (Tf) conjugated lipid nanoparticles (Tf–NP–LOR-1284) were synthesized by microfluidic hydrodynamic focusing (MHF) and evaluated for the targeted delivery of LOR-1284 siRNA into acute myeloid leukemia (AML) cells. The in vitro study showed that Tf–NP–LOR-1284 can protect LOR-1284 from serum nuclease degradation. Selective uptake of Tf–NP–LOR-1284 was observed in MV4-11 cells. In addition, qRT-PCR and Western blot results revealed that Tf–NP–LOR-1284 was more effective than the free LOR-1284 in reducing the R2 mRNA and protein levels. The Tf–NP–LOR-1284 showed prolonged circulation time and increased AUC after i.v. administration relative to the free LOR-1284. Furthermore, Tf–NP–LOR-1284 facilitated increased accumulation at the tumor site along with the decreased R2 mRNA and protein expression in a murine xenograft model. These results suggest that Tf-conjugated NPs prepared by MHF provide a suitable platform for efficient and specific therapeutic delivery of LOR-1284 into AML cells.

Graphical abstract: A microfluidic method to synthesize transferrin-lipid nanoparticles loaded with siRNA LOR-1284 for therapy of acute myeloid leukemia

Supplementary files

Article information

Article type
Paper
Submitted
19 Mar 2014
Accepted
29 May 2014
First published
03 Jun 2014

Nanoscale, 2014,6, 9742-9751

A microfluidic method to synthesize transferrin-lipid nanoparticles loaded with siRNA LOR-1284 for therapy of acute myeloid leukemia

Z. Yang, B. Yu, J. Zhu, X. Huang, J. Xie, S. Xu, X. Yang, X. Wang, B. C. Yung, L. J. Lee, R. J. Lee and L. Teng, Nanoscale, 2014, 6, 9742 DOI: 10.1039/C4NR01510J

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