The development of multifunctional contrast agents contributes significant character in the diagnosis of cancer. However, still efforts are required to design and improve the biocompatibility of contrast agents for ea...The development of multifunctional contrast agents contributes significant character in the diagnosis of cancer. However, still efforts are required to design and improve the biocompatibility of contrast agents for early detection of cancer. Herein, we synthesized splat shape Fe_3O_4/Au nanocomposites for multimode biomedical applications. Transmission electron microscopy(TEM) results showed that the splat-like Fe_3O_4/Au structure was in the range of 130 nm and homogeneously distributed in the aqueous medium. The nanocomposites were incubated with MCF-7 cells to investigate the magnetic resonance imaging(MRI) and surface-enhanced Raman scattering(SERS) activities. The excellent T_2 MRI and enhanced SERS properties were obtained without any cytotoxicity. These results demonstrated that assynthesized splat-shaped Fe_3O_4/Au nanocomposites may be a promising MRI/SERS dual probe for the tumor detection.展开更多
基金financially supported by the National Natural Science Foundation of China (Nos. 21305148, U1732127, U1432114, 51303196)the Ningbo Natural Science Foundation Nos. 2014A610159, 2014B82010, 2015C50004, 2015B11002, 2016A610013, 2017C110022)+2 种基金Zhejiang Province (Nos. Bsh1202031, 2017C33129, 2017C03042,12018KY737 andLY18H180011)Zhejiang Pharmaceutical College (No. ZPCSR2015013)Hundred Talents Program of Chinese Academy of Sciences (No. 2010-735)
文摘The development of multifunctional contrast agents contributes significant character in the diagnosis of cancer. However, still efforts are required to design and improve the biocompatibility of contrast agents for early detection of cancer. Herein, we synthesized splat shape Fe_3O_4/Au nanocomposites for multimode biomedical applications. Transmission electron microscopy(TEM) results showed that the splat-like Fe_3O_4/Au structure was in the range of 130 nm and homogeneously distributed in the aqueous medium. The nanocomposites were incubated with MCF-7 cells to investigate the magnetic resonance imaging(MRI) and surface-enhanced Raman scattering(SERS) activities. The excellent T_2 MRI and enhanced SERS properties were obtained without any cytotoxicity. These results demonstrated that assynthesized splat-shaped Fe_3O_4/Au nanocomposites may be a promising MRI/SERS dual probe for the tumor detection.
