Fluorescence microscopy showed strong luminescent signals from ET2-exposed NTERA-2 cells. It was also demonstrated that the ET2 nanocomplex effectively labeled up to of the tested NTERA2 cells, but only of CCD-18Co human colon normal cells. Therefore, these results show that the ET2 luminescent nanocomplex specifically targeted and labeled CSCs, and may be used for further applications in fundamental and clinical research. |