Abstract
We recently reported the synthesis of NOSH-aspirin, a novel hybrid compound capable of releasing both nitric oxide (NO) and hydrogen sulfide (H2S). In NOSH-aspirin, the two moieties that release NO and H2S are covalently linked at the 1, 2 positions of acetyl salicylic acid, i.e., ortho-NOSH-aspirin. Here we report on the synthesis of meta- and para-NOSH-aspirins. We also made a head-to-head evaluation of the effects of these three positional isomers of NOSH-aspirin on colon cancer cell kinetics and induction of reactive oxygen species, which in recent years has emerged as a key event in causing cancer cell regression. Electron donating/withdrawing groups incorporated about the benzoate moiety significantly affected the potency of these compounds with respect to colon cancer cell growth inhibition.
Keywords:
Cell kinetics; Colon cancer; Hydrogen sulfide; NOSH-aspirin; Nitric oxide; Reactive oxygen species.
Copyright © 2015 Elsevier Ltd. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
MeSH terms
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Antineoplastic Agents / chemical synthesis*
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Antineoplastic Agents / chemistry
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Antineoplastic Agents / pharmacology*
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Apoptosis / drug effects
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Aspirin / analogs & derivatives*
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Aspirin / chemical synthesis
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Aspirin / chemistry
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Aspirin / pharmacology
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Cell Cycle / drug effects
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Cell Line, Tumor
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Cell Proliferation / drug effects
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Disulfides / chemical synthesis
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Disulfides / chemistry
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Disulfides / pharmacology*
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Dose-Response Relationship, Drug
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Drug Screening Assays, Antitumor
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HT29 Cells
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Humans
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Hydrogen Sulfide / metabolism*
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Molecular Structure
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Nitrates / chemical synthesis
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Nitrates / chemistry
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Nitrates / pharmacology*
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Nitric Oxide / metabolism*
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Reactive Oxygen Species / metabolism
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Structure-Activity Relationship
Substances
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4-(3-thioxo-3H-1,2-dithiol-5-yl)phenyl 2-((4-(nitrooxy)butanoyl)oxy)benzoate
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Antineoplastic Agents
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Disulfides
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Nitrates
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Reactive Oxygen Species
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Nitric Oxide
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Aspirin
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Hydrogen Sulfide