This subproject is one of many research subprojects utilizing theresources provided by a Center grant funded by NIH/NCRR. The subproject andinvestigator (PI) may have received primary funding from another NIH source,and thus could be represented in other CRISP entries. The institution listed isfor the Center, which is not necessarily the institution for the investigator.Self-assembled monolayer(SAM) has been used for biological study of receptor-ligand and DNA-DNA interaction. SAM has poly(ethylene)glycol(PEG) chain at the end of long alkane chain to prevent non-specific binding of protein or DNA. Maleimide groups which bind to the end of PEG chain react efficiently with thiol-terminated oligonucleotides(ONs). The change of sequential length of ONs may control transfection efficiency, changing interaction between ONs and ssDNA. The delivery of ssDNA condensed with condensing agents on the SAM may enhance transfection efficiency and lead to easy way to control nucleotides interaction for cellular internalization.
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