Fabricating upconversion fluorescent nanoparticles modified substrate for dynamical control of cancer cells and pathogenic bacteria.
Lanthanide-doped upconversion nanoparticles (UCNPs) have attracted widespread interests in the field of biomedicine because of their unique upconverting capability by converting near infrared (NIR) excitation to visible or ultraviolet (UV) emission. Here, we developed a novel UCNP-based substrate for dynamic capture and release of cancer cells and pathogenic bacteria under NIR-control. The UCNPs harvest NIR light and convert it to ultraviolet light, which subsequently result in the cleavage of photoresponsive linker (PR linker) from the substrate, and on demand allows the release of a captured cell. The results show that after seeding cells for 5 h, the cells were efficiently captured on the surface of the substrate and ˜89.4% of the originally captured S. aureus was released from the surface after exposure to 2 W/cm2NIR light for 30 min, and ˜92.1% of HepG2 cells. These findings provide a unique platform for exploring an entirely new application field for this promising luminescent nanomaterial.
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
Huanhuan
H
Li
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
Quansheng
Q
Chen
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
Jiewen
J
Zhao
School of Food and Biological Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
Khulal
K
Urmila
D001422:Bacterial Adhesion / Q000528:radiation effects; D002448:Cell Adhesion / Q000528:radiation effects; D018914:Cells, Immobilized; D005453:Fluorescence; D056945:Hep G2 Cells; D006801:Humans; D007259:Infrared Rays; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D049449:Luminescence; D053758:Nanoparticles / Q000737:chemistry*; D013211:Staphylococcus aureus; D014466:Ultraviolet Rays
D028581:Lanthanoid Series Elements
bacteria-cell ; cancer-cell; photoresponsive linker; programmable substrate; upconversion nanoparticles