Arylboronate Ester Based Diazeniumdiolates (BORO/NO), a Class of Hydrogen Peroxide Inducible Nitric Oxide (NO) Donors
摘要:
Here, we report the design, synthesis, and evaluation of arylboronate ester based diazeniumdiolates (BORO/NO), a class of nitric oxide (NO) donors activated by hydrogen peroxide (H2O2), a reactive oxygen species (ROS), to generate NO. We provide evidence for the NO donors' ability to permeate bacteria to produce NO when exposed to H2O2 supporting possible applications for BORO/NO to study molecular mechanisms of NO generation in response to elevated ROS.
Aryl Bis(diazeniumdiolates): Potent Inducers of <i>S</i>-Glutathionylation of Cellular Proteins and Their in Vitro Antiproliferative Activities
作者:Daniela Andrei、Anna E. Maciag、Harinath Chakrapani、Michael L. Citro、Larry K. Keefer、Joseph E. Saavedra
DOI:10.1021/jm800831y
日期:2008.12.25
A number of bis(diazeniumdiolates) that we designed to release up to 4 mol of nitric oxide (NO) and that are structural analogues of the NO prodrug and anticancer lead compound O-2-2,4-dinitro-5-[4-(N-methylamino)benzoyloxy]phenyl} 1-(N,N-dimethylamino)diazen-1-ium-1,2-diolate (PABA/NO) were synthesized and studied. A majority of these compounds yielded higher levels of NO, were better inhibitors of proliferation of a number of cancer cell lines, and more rapidly induced substantially increased levels of S-glutathionylation of cellular proteins in comparison with PABA/NO. In most cases, the antiproliferative activity and extents of S-glutathionylation correlated well with levels of intracellular NO release. We report bis(diazeniumdiolates) to be a class of S-glutathionylating agents with potent antiproliferative and S-glutathionylating activity.
Due to the involvement of nitric oxide (NO) in numerous and diverse physiological processes, site-directed delivery of therapeutic NO in order to minimize unwanted side-effects is necessary. O-2-(4-Nitrobenzyl) diazeniumdiolates are designed as substrates for Escherichia coli nitroreductase (NTR), an enzyme that is frequently used to facilitate directed delivery of cytotoxic species to cancers. O-2-(4-Nitrobenzyl) diazeniumdiolates are found to be stable in aqueous buffer but are metabolized by NTR to produce NO. A cell viability assay revealed that cytotoxic effects of O-2-(4-nitrobenzyl)1-(2-methylpiperidin-1-yl)diazen-1-ium-1,2-diolate (4b) towards two cancer cell lines is significantly enhanced in the presence of NTR suggesting the potential for use of this compound in nitric oxide-based directed prodrug therapy. (C) 2013 Elsevier Ltd. All rights reserved.
Arylboronate Ester Based Diazeniumdiolates (BORO/NO), a Class of Hydrogen Peroxide Inducible Nitric Oxide (NO) Donors
作者:Allimuthu T. Dharmaraja、Govindan Ravikumar、Harinath Chakrapani
DOI:10.1021/ol5010643
日期:2014.5.16
Here, we report the design, synthesis, and evaluation of arylboronate ester based diazeniumdiolates (BORO/NO), a class of nitric oxide (NO) donors activated by hydrogen peroxide (H2O2), a reactive oxygen species (ROS), to generate NO. We provide evidence for the NO donors' ability to permeate bacteria to produce NO when exposed to H2O2 supporting possible applications for BORO/NO to study molecular mechanisms of NO generation in response to elevated ROS.