Protection against 2-chloroethyl ethyl sulfide (CEES) — induced cytotoxicity in human keratinocytes by an inducer of the glutathione detoxification pathway

Sulfur mustard (SM or mustard gas) was first used as a chemical warfare agent almost 100years ago. Due to its toxic effects on the eyes, lungs, and skin, and the relative ease with which it may be synthesized, mustard gas remains a potential chemical threat to the present day. SM exposed skin develo...

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Veröffentlicht in:Toxicology and applied pharmacology 2011-09, Vol.255 (2), p.176-183
Hauptverfasser: Abel, Erika L., Bubel, Jennifer D., Simper, Melissa S., Powell, Leslie, McClellan, S. Alex, Andreeff, Michael, MacLeod, Michael C., DiGiovanni, John
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container_issue 2
container_start_page 176
container_title Toxicology and applied pharmacology
container_volume 255
creator Abel, Erika L.
Bubel, Jennifer D.
Simper, Melissa S.
Powell, Leslie
McClellan, S. Alex
Andreeff, Michael
MacLeod, Michael C.
DiGiovanni, John
description Sulfur mustard (SM or mustard gas) was first used as a chemical warfare agent almost 100years ago. Due to its toxic effects on the eyes, lungs, and skin, and the relative ease with which it may be synthesized, mustard gas remains a potential chemical threat to the present day. SM exposed skin develops fluid filled bullae resulting from potent cytotoxicity of cells lining the basement membrane of the epidermis. Currently, there are no antidotes for SM exposure; therefore, chemopreventive measures for first responders following an SM attack are needed. Glutathione (GSH) is known to have a protective effect against SM toxicity, and detoxification of SM is believed to occur, in part, via GSH conjugation. Therefore, we screened 6 potential chemopreventive agents for ability to induce GSH synthesis and protect cultured human keratinocytes against the SM analog, 2-chloroethyl ethyl sulfide (CEES). Using NCTC2544 human keratinocytes, we found that both sulforaphane and methyl-2-cyano-3,12-dioxooleana-1,9-dien-28-oate (CDDO-Me) stimulated nuclear localization of Nrf2 and induced expression of the GSH synthesis gene, GCLM. Additionally, we found that treatment with CDDO-Me elevated reduced GSH content of NCTC2544 cells and preserved their viability by ~3-fold following exposure to CEES. Our data also suggested that CDDO-Me may act additively with 2,6-dithiopurine (DTP), a nucleophilic scavenging agent, to increase the viability of keratinocytes exposed to CEES. These results suggest that CDDO-Me is a promising chemopreventive agent for SM toxicity in the skin. ► CDDO-Me treatment increased intracellular GSH in human keratinocytes. ► CDDO-Me increased cell viability following exposure to the half-mustard, CEES. ► The cytoprotective effect of CDDO-Me was likely due to scavenging with endogenous GSH.
doi_str_mv 10.1016/j.taap.2011.06.012
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Our data also suggested that CDDO-Me may act additively with 2,6-dithiopurine (DTP), a nucleophilic scavenging agent, to increase the viability of keratinocytes exposed to CEES. These results suggest that CDDO-Me is a promising chemopreventive agent for SM toxicity in the skin. ► CDDO-Me treatment increased intracellular GSH in human keratinocytes. ► CDDO-Me increased cell viability following exposure to the half-mustard, CEES. ► The cytoprotective effect of CDDO-Me was likely due to scavenging with endogenous GSH.</description><subject>60 APPLIED LIFE SCIENCES</subject><subject>AMINO ACIDS</subject><subject>ANIMAL TISSUES</subject><subject>AROMATICS</subject><subject>Biological and medical sciences</subject><subject>Blotting, Western</subject><subject>BODY</subject><subject>BRASSICA</subject><subject>CARBOXYLIC ACIDS</subject><subject>CDDO-Me</subject><subject>Cell Line</subject><subject>Cell Survival - drug effects</subject><subject>CHALCOGENIDES</subject><subject>CHELATING AGENTS</subject><subject>Chemical and industrial products toxicology. 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Additionally, we found that treatment with CDDO-Me elevated reduced GSH content of NCTC2544 cells and preserved their viability by ~3-fold following exposure to CEES. Our data also suggested that CDDO-Me may act additively with 2,6-dithiopurine (DTP), a nucleophilic scavenging agent, to increase the viability of keratinocytes exposed to CEES. These results suggest that CDDO-Me is a promising chemopreventive agent for SM toxicity in the skin. ► CDDO-Me treatment increased intracellular GSH in human keratinocytes. ► CDDO-Me increased cell viability following exposure to the half-mustard, CEES. ► The cytoprotective effect of CDDO-Me was likely due to scavenging with endogenous GSH.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>21723306</pmid><doi>10.1016/j.taap.2011.06.012</doi><tpages>8</tpages></addata></record>
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ispartof Toxicology and applied pharmacology, 2011-09, Vol.255 (2), p.176-183
issn 0041-008X
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language eng
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source MEDLINE; Access via ScienceDirect (Elsevier)
subjects 60 APPLIED LIFE SCIENCES
AMINO ACIDS
ANIMAL TISSUES
AROMATICS
Biological and medical sciences
Blotting, Western
BODY
BRASSICA
CARBOXYLIC ACIDS
CDDO-Me
Cell Line
Cell Survival - drug effects
CHALCOGENIDES
CHELATING AGENTS
Chemical and industrial products toxicology. Toxic occupational diseases
CHEMICAL WARFARE AGENTS
Chemical Warfare Agents - pharmacokinetics
Chemical Warfare Agents - toxicity
CONDENSED AROMATICS
CYSTEINE
Cytotoxicity
DETOXIFICATION
DMSO
Drug Interactions
DRUGS
EDTA
ENZYMES
EPIDERMIS
Epidermis - cytology
Epidermis - drug effects
Epidermis - metabolism
EPITHELIUM
FOOD
Gas, fumes
GLUTATHIONE
Glutathione - metabolism
Humans
HYDROCARBONS
Inactivation, Metabolic
Keratinocytes
Keratinocytes - drug effects
Keratinocytes - metabolism
LIGASES
LUNGS
MAGNOLIOPHYTA
MAGNOLIOPSIDA
Medical sciences
Mustard Gas - analogs & derivatives
Mustard Gas - pharmacokinetics
Mustard Gas - toxicity
NAPHTHALENE
NF-E2-Related Factor 2 - metabolism
Oleanolic Acid - analogs & derivatives
Oleanolic Acid - pharmacology
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANS
PEPTIDES
PLANTS
POLYPEPTIDES
PROTEINS
RADIOPROTECTIVE SUBSTANCES
RESPIRATORY SYSTEM
RESPONSE MODIFYING FACTORS
SKIN
SULFIDES
SULFOXIDES
SULFUR COMPOUNDS
Sulfur mustard
SYNTHESIS
THIOLS
TOXICITY
Toxicology
VEGETABLES
VIABILITY
WEAPONS
title Protection against 2-chloroethyl ethyl sulfide (CEES) — induced cytotoxicity in human keratinocytes by an inducer of the glutathione detoxification pathway
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