Structural Modifications to DNA-Binding Polyamides for Improved Biological Activity in Cell Culture
Polyamides are a class of synthetic small molecules that recognize DNA in a sequence-specific fashion through a network of hydrogen bonds formed with bonding partners in the floor of the minor groove. The binding affinity of polyamides is comparable to that of numerous DNA-binding proteins, and pol...
| Summary: | Polyamides are a class of synthetic small molecules that recognize DNA in a sequence-specific fashion through a network of hydrogen bonds formed with bonding partners in the floor of the minor groove. The binding affinity of polyamides is comparable to that of numerous DNA-binding proteins, and polyamides have been shown to displace DNA-binding proteins. As such, they present a powerful opportunity to modulate expression levels of genes vital to human health. The cellular permeability and biological activity of polyamides has presented an impediment in moving from in vitro to in vivo work that was partially removed by the discovery that fluorescein dyes facilitate cell entry. The work described here details recent advances in modifications to the C-terminal polyamide linker, linkage and tail groups that improve the endogenous inducible gene regulation activity of polyamides in cell culture.
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