Direct observation of nanoparticle-cancer cell nucleus interactions.

Direct observation of nanoparticle-cancer cell nucleus interactions.
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直接观察纳米颗粒-癌细胞核相互作用。

DOI:
10.1021/nn300296p
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发表时间:
2012-04-24
期刊:
影响因子:
17.1
通讯作者:
Odom, Teri W.
Odom, Teri W.
中科院分区:
材料科学1区
文献类型:
--
作者:
Dam, Duncan Hieu M.;Lee, Jung Heon;Sisco, Patrick N.;Co, Dick T.;Zhang, Ming;Wasielewski, Michael R.;Odom, Teri W.

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我们报告了载药纳米颗粒和癌细胞核之间相互作用的直接可视化。由核仁特异性适体和金纳米星组成的纳米构建体被主动转运到细胞核,并通过构建体位点附近的核膜内陷诱导细胞核表型的重大变化。局部变形的数量可以通过从金纳米星表面超快、光触发释放适体来增加。具有更多核膜折叠的癌细胞显示增加的半胱天冬酶3和7活性(凋亡)以及降低的细胞活力。这一新发现的药物诱导的细胞核表型变化与治疗效果增加之间的相关性可能为核靶向癌症治疗提供新的见解。
We report the direct visualization of interactions between drug-loaded nanoparticles and the cancer cell nucleus. Nanoconstructs composed of nucleolin-specific aptamers and gold nanostars were actively transported to the nucleus and induced major changes to the nuclear phenotype via nuclear envelope invaginations near the site of the construct. The number of local deformations could be increased by ultra-fast, light-triggered release of the aptamers from the surface of the gold nanostars. Cancer cells with more nuclear envelope folding showed increased caspase 3 and 7 activity (apoptosis) as well as decreased cell viability. This newly revealed correlation between drug-induced changes in nuclear phenotype and increased therapeutic efficacy could provide new insight for nuclear-targeted cancer therapy.
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发表时间: 1997-02-10
期刊: The Journal of cell biology
影响因子: --
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