Delivery of chemo-sensitizing siRNAs to HER2+-breast cancer cells using RNA aptamers.
Delivery of chemo-sensitizing siRNAs to HER2+-breast cancer cells using RNA aptamers.
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DOI:
10.1093/nar/gks294
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发表时间:
2012-07
影响因子:
14.9
通讯作者:
Giangrande PH
中科院分区:
文献类型:
--
作者:
Thiel KW;Hernandez LI;Dassie JP;Thiel WH;Liu X;Stockdale KR;Rothman AM;Hernandez FJ;McNamara JO 2nd;Giangrande PH
Human epidermal growth factor receptor 2 (HER2) expression in breast cancer is associated with an aggressive phenotype and poor prognosis, making it an appealing therapeutic target. Trastuzumab, an HER2 antibody-based inhibitor, is currently the leading targeted treatment for HER2+-breast cancers. Unfortunately, many patients inevitably develop resistance to the therapy, highlighting the need for alternative targeted therapeutic options. In this study, we used a novel, cell-based selection approach for isolating ‘cell-type specific’, ‘cell-internalizing RNA ligands (aptamers)’ capable of delivering therapeutic small interfering RNAs (siRNAs) to HER2-expressing breast cancer cells. RNA aptamers with the greatest specificity and internalization potential were covalently linked to siRNAs targeting the anti-apoptotic gene, Bcl-2. We demonstrate that, when applied to cells, the HER2 aptamer-Bcl-2 siRNA conjugates selectively internalize into HER2+-cells and silence Bcl-2 gene expression. Importantly, Bcl-2 silencing sensitizes these cells to chemotherapy (cisplatin) suggesting a potential new therapeutic approach for treating breast cancers with HER2+-status. In summary, we describe a novel cell-based selection methodology that enables the identification of cell-internalizing RNA aptamers for targeting therapeutic siRNAs to HER2-expressing breast cancer cells. The future refinement of this technology may promote the widespread use of RNA-based reagents for targeted therapeutic applications.
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影响因子:
46.9
作者:
Dassie, Justin P.;Liu, Xiu-ying;Thomas, Gregory S.;Whitaker, Ryan M.;Thiel, Kristina W.;Stockdale, Katie R.;Meyerholz, David K.;McCaffrey, Anton P.;McNamara, James O., II;Giangrande, Paloma H.
通讯作者:
Giangrande, Paloma H.
影响因子:
8.8
作者:
通讯作者:
--
DOI:
10.1186/bcr2328
发表时间:
2009
期刊:
Breast cancer research : BCR
影响因子:
--
作者:
Foster FM;Owens TW;Tanianis-Hughes J;Clarke RB;Brennan K;Bundred NJ;Streuli CH
通讯作者:
Streuli CH
影响因子:
45.3
作者:
Cobleigh, MA;Vogel, CL;Slamon, DJ
通讯作者:
Slamon, DJ
影响因子:
13.3
作者:
Akar, Ugur;Chaves-Reyez, Arturo;Ozpolat, Bulent
通讯作者:
Ozpolat, Bulent