Antistaphylococcal activity of DNA-interactive pyrrolobenzodiazepine (PBD) dimers and PBD-biaryl conjugates
نویسندگان
چکیده
منابع مشابه
Antistaphylococcal activity of DNA-interactive pyrrolobenzodiazepine (PBD) dimers and PBD-biaryl conjugates
OBJECTIVES Pyrrolobenzodiazepine (PBD) dimers, tethered through inert propyldioxy or pentyldioxy linkers, possess potent bactericidal activity against a range of Gram-positive bacteria by virtue of their capacity to cross-link duplex DNA in sequence-selective fashion. Here we attempt to improve the antibacterial activity and cytotoxicity profile of PBD-containing conjugates by extension of dime...
متن کاملFrom Anthramycin to Pyrrolobenzodiazepine (PBD)‐Containing Antibody–Drug Conjugates (ADCs)
The pyrrolo[2,1-c][1,4]benzodiazepines (PBDs) are a family of sequence-selective DNA minor-groove binding agents that form a covalent aminal bond between their C11-position and the C2-NH2 groups of guanine bases. The first example of a PBD monomer, the natural product anthramycin, was discovered in the 1960s, and the best known PBD dimer, SJG-136 (also known as SG2000, NSC 694501 or BN2629), wa...
متن کاملEffect of base sequence on the DNA cross-linking properties of pyrrolobenzodiazepine (PBD) dimers
Pyrrolo[2,1-c][1,4]benzodiazepine (PBD) dimers are synthetic sequence-selective DNA minor-groove cross-linking agents that possess two electrophilic imine moieties (or their equivalent) capable of forming covalent aminal linkages with guanine C2-NH(2) functionalities. The PBD dimer SJG-136, which has a C8-O-(CH(2))(3)-O-C8'' central linker joining the two PBD moieties, is currently undergoing p...
متن کاملObservation of the reversibility of a covalent pyrrolobenzodiazepine (PBD) DNA adduct by HPLC/MS and CD spectroscopy.
Pyrrolobenzodiazepines (PBDs) are sequence-selective DNA minor-groove binding agents that covalently bond to guanine with a reported preference for Pu-G-Pu sequences (Pu = Purine). Using HPLC/MS and Circular Dichroism (CD) methodologies, we have established for the first time that the aminal bond formed between PBD molecules and DNA is reversible. Furthermore, we have shown that while the rate ...
متن کاملInteraction of Pyrrolobenzodiazepine (PBD) Ligands with Parallel Intermolecular G-Quadruplex Complex Using Spectroscopy and ESI-MS
Studies on ligand interaction with quadruplex DNA, and their role in stabilizing the complex at concentration prevailing under physiological condition, has attained high interest. Electrospray ionization mass spectrometry (ESI-MS) and spectroscopic studies in solution were used to evaluate the interaction of PBD and TMPyP4 ligands, stoichiometry and selectivity to G-quadruplex DNA. Two syntheti...
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ژورنال
عنوان ژورنال: Journal of Antimicrobial Chemotherapy
سال: 2012
ISSN: 1460-2091,0305-7453
DOI: 10.1093/jac/dks127