Fluorescent dendritic micro-hydrogels: synthesis, analysis and use in single-cell detection
Grinstaff, Mark W.
Schaus, Scott E.
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Citation (published version)Lisa Christadore, Mark W Grinstaff, Scott E Schaus. 2018. "Fluorescent Dendritic Micro-Hydrogels: Synthesis, Analysis and Use in Single-Cell Detection." MOLECULES, Volume 23, Issue 4,10 pp. (10). https://doi.org/10.3390/molecules23040936
Hydrogels are of keen interest for a wide range of medical and biotechnological applications including as 3D substrate structures for the detection of proteins, nucleic acids, and cells. Hydrogel parameters such as polymer wt % and crosslink density are typically altered for a specific application; now, fluorescence can be incorporated into such criteria by specific macromonomer selection. Intrinsic fluorescence was observed at λmax 445 nm from hydrogels polymerized from lysine and aldehyde- terminated poly(ethylene glycol) macromonomers upon excitation with visible light. The hydrogel’s photochemical properties are consistent with formation of a nitrone functionality. Printed hydrogels of 150 μm were used to detect individual cell adherence via a decreased in fluorescence. The use of such intrinsically fluorescent hydrogels as a platform for cell sorting and detection expands the current repertoire of tools available.
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