The DNA encoded 2D and 3D patterning of cells was recently reported in Angewandte Chemie. The authors used the biotinylation of cell surface proteins followed by binding to streptavidin-conjugated oligonucleotides. This and other DNA-cell labeling methodologies had previously been reported. I am surprised they didn't do a cell surface display of streptavidin and used biotinylated DNA. I am also wondering if that could be done in a light-activated fashion...
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