126093-01-4Relevant articles and documents
Design, synthesis, and biophysical and biological evaluation of a series of pyrrolobenzodiazepine-poly(N-methylpyrrole) conjugates
Wells, Geoff,Martin, Christopher R. H.,Howard, Philip W.,Sands, Zara A.,Laughton, Charles A.,Tiberghien, Arnaud,Woo, Chi Kit,Masterson, Luke A.,Stephenson, Marissa J.,Hartley, John A.,Jenkins, Terence C.,Shnyder, Steven D.,Loadman, Paul M.,Waring, Michael J.,Thurston, David E.
, p. 5442 - 5461 (2007/10/03)
A novel series of methyl ester-terminated CS-linked pyrrolobenzodiazepine (PBD)-poly(N-methylpyrrole) conjugates (50a-f) has been synthesized and their DNA interaction evaluated by thermal denaturation, DNA footprinting, and in vitro transcription stop assays. The synergistic effect of attaching a PBD unit to a polypyrrole fragment is illustrated by the large increase in DNA binding affinity (up to 50-fold) compared to the individual PBD and pyrrole components. 50a-f were found to bind mainly to identical DNA sequences but with apparent binding site widths increasing with molecular length and the majority of sites conforming to the consensus motif 5′-XGXWz (z = 3 ± 1; W = A or T; X = any base but preferably a purine). They also provided robust sequence-selective blockade of transcription at sites corresponding approximately to their DNA footprints. 50a-f were shown to have good cellular/nuclear penetration properties, and a degree of correlation between cytotoxicity and DNA-binding affinity was observed.
Design, synthesis, DNA binding, and biological activity of a series of DNA minor-groove-binding intercalating drugs
Bailly,Pommery,Houssin,Henichart
, p. 910 - 917 (2007/10/02)
A group of pseudopeptides, molecular combination of the natural antitumor agents distamycin or netropsin and the anilinoacridine chromophore (which is related to the synthetic antileukemic drug amsacrine) has been synthesized. Their DNA binding properties were determined and discussed in terms of their structural differences and in relation to their observed base-dependent binding. Binding data are consistent with a model in which the acridine nucleus occupies an intercalation site and the netropsin or distamycin residue resides in the DNA minor groove. Cytostatic and cytotoxic activities against a murine cell line are reported, as well as significant differences in the inhibition of DNA synthesis.