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:
Journal of controlled release : official journal of the Controlled Release Society
影响因子:
--
通讯作者:
Shin DM
Shin DM
中科院分区:
其他
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

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将 siRNA 系统性递送至实体瘤仍然具有挑战性。在这项研究中,我们研究了靶向核糖核苷酸还原酶亚基 M2 (RRM2) 的 siRNA 纳米颗粒的全身递送,并评估了其瘤内动力学、功效和作用机制。通过 RNAi 机制敲低 RRM2 可强烈抑制头颈鳞状细胞癌 (HNSCC) 和非小细胞肺癌 (NSCLC) 细胞系的细胞生长。在 HNSCC 的小鼠异种移植模型中,单次静脉注射导致完整纳米粒子在肿瘤中积聚,并在至少 3 天的时间内分解,从而导致目标基因敲低持续至少 10 天。靶向 HNSCC 肿瘤的 siRNA 纳米颗粒递送 RRM2 siRNA 的四剂量方案通过抑制细胞增殖和诱导细胞凋亡显着减少肿瘤进展。这些结果表明基于 RRM2 siRNA 的疗法有望用于治疗 HNSCC 和可能的 NSCLC。
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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