Department of Materials Science and Engineering, Inha University, Incheon, Korea.
Anticancer Drugs. 2012 Jun;23(5):553-60. doi: 10.1097/CAD.0b013e328350446b.
To determine the appropriate surfactant to be added to TiO(2) nanotubes (TNTs) for use in cancer photothermotherapy, this study measured the increase in temperature and examined the size distribution of TNT particles loaded with different surfactants during near-infrared irradiation. In addition, in-vitro cell (fluorescein isothiocyanate and MTT assay) tests were carried out to examine the cytotoxic effect of doxorubicin-loaded and polyvinyl alcohol-added TNTs (pTNTs). The mean particle size of the pTNTs was 151.8 nm with a particle size variation of less than 3 nm, which is low enough to flow through blood vessels without causing a blockage. The temperature of the pTNTs was ∼47°C, which is high enough to destroy cancer cells. Doxorubicin-loaded TNTs and pTNTs in combination with a near-infrared laser showed a cell viability of 4.5% - a sufficiently high cytotoxic effect.
为了确定用于癌症光热治疗的 TiO(2) 纳米管(TNTs)中应添加的合适表面活性剂,本研究测量了在近红外辐射下不同表面活性剂负载的 TNT 颗粒的升温情况,并考察了其粒径分布。此外,还进行了体外细胞(异硫氰酸荧光素和 MTT 检测)试验,以研究载多柔比星和添加聚乙烯醇的 TNTs(pTNTs)的细胞毒性作用。pTNTs 的平均粒径为 151.8nm,粒径变化小于 3nm,小到足以在不造成阻塞的情况下流过血管。pTNTs 的温度约为 47°C,足以破坏癌细胞。载多柔比星的 TNTs 和 pTNTs 与近红外激光联合使用时,细胞活力为 4.5%,具有足够高的细胞毒性作用。