Figure 2
Labeling of hMSCs.
(a,b) SV40-NLS-TP and (c,d) SV40-NLS peptide-coated red-emitting CdSe/ZnS QDs. See Figure 1 for the anatomy of peptides. (a, c) Cells under fluorescence microscope. (b) DAPI staining indicating the nucleus of the cell. White arrows in (a) point out the accumulation of QDs in the nucleus. (d) Light microscope image. It is clear from (c) that SV40-NLS peptide-coated QDs are present on the cell membrane and endosomes without nuclear targeting. Scale bar: 100 μm.
