Systemic delivery of siRNA nanoparticles targeting RRM2 suppresses head and neck tumor growth.
Systemic delivery of siRNA nanoparticles targeting RRM2 suppresses head and neck tumor growth.
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DOI:
10.1016/j.jconrel.2012.01.045
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发表时间:
2012-05-10
期刊:
影响因子:
--
通讯作者:
Shin DM
中科院分区:
文献类型:
--
作者:
Rahman MA;Amin AR;Wang X;Zuckerman JE;Choi CH;Zhou B;Wang D;Nannapaneni S;Koenig L;Chen Z;Chen ZG;Yen Y;Davis ME;Shin DM
Systemic delivery of siRNA to solid tumors remains challenging. In this study, we investigated the systemic delivery of an siRNA-nanoparticle targeting ribonucleotide reductase subunit M2 (RRM2), and evaluated its intratumoral kinetics, efficacy and mechanism of action. Knockdown of RRM2 by an RNAi mechanism strongly inhibited cell growth in head and neck squamous cell carcinoma (HNSCC) and non-small cell lung cancer (NSCLC) cell lines. In a mouse xenograft model of HNSCC, a single intravenous injection led to the accumulation of intact nanoparticles in the tumor that disassembled over a period of at least 3 days, leading to target gene knockdown lasting at least 10 days. A four-dose schedule of siRNA-nanoparticle delivering RRM2 siRNA targeted to HNSCC tumors significantly reduced tumor progression by suppressing cell proliferation and inducing apoptosis. These results show promise for the use of RRM2 siRNA-based therapy for HNSCC and possibly NSCLC.
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