Gold nanotriangles: scale up and X-ray radiosensitization effects in mice.

Gold nanotriangles: scale up and X-ray radiosensitization effects in mice.
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DOI:
10.1039/c6nr08172j
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发表时间:
2017-04-20
期刊:
影响因子:
6.7
通讯作者:
Krishnan S
Krishnan S
中科院分区:
材料科学2区
文献类型:
--
作者:
Bhattarai SR;Derry PJ;Aziz K;Singh PK;Khoo AM;Chadha AS;Liopo A;Zubarev ER;Krishnan S

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In the past decade, there has been considerable interest in radiosensitization using gold nanoparticles that accumulate specifically in cancerous tissue while sparing normal tissues. Despite this interest, it remains unclear which nanoparticle morphologies, cellular uptake, or cytoplasmic distribution elicit optimal radiosensitization. We introduce gold nanotriangles (AuNTs) as a possible X-ray radiotherapy sensitizer. In this study, we first explored a large-scale synthetic method for the production of high quality monodisperse AuNTs. Second, we conducted in vitro and in vivo experiments to evaluate the effect of PEGylated AuNTs (pAuNTs) on cellular uptake, cytotoxicity, bio-distribution, and radiosensitization on radiation-resistant human Glioblastoma Multiforme (GBM) cells. Our results suggest that the new scale up synthesis methodology consistently produced high quality AuNTs and pAuNTs which had nonspecific cellular uptake without any obvious cytotoxicity and exhibited excellent radiosensitization. Intravenously adminsitered gold nanotriangles accumulate passively in tumors in mice and potently sensitize them to radiation therapy.
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