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The Cytoprotective Effects of E-α-(4-Methoxyphenyl)-2’,3,4,4'-Tetramethoxychalcone (E-α-p-OMe-C6H4-TMC)-A Novel and Non-Cytotoxic HO-1 Inducer
Kaufmann, Kai B., Al-Rifai, Nafisah, Ulbrich, Felix, Schallner, Nils, Rücker, Hannelore, Enzinger, Monika, Petkes, Hermina, Pitzl, Sebastian, Goebel, Ulrich
and Amslinger, Sabine
(2015)
The Cytoprotective Effects of E-α-(4-Methoxyphenyl)-2’,3,4,4'-Tetramethoxychalcone (E-α-p-OMe-C6H4-TMC)-A Novel and Non-Cytotoxic HO-1 Inducer.
PLoS ONE 10 (11), e0142932.
Date of publication of this fulltext: 30 Nov 2015 14:16
Article
DOI to cite this document: 10.5283/epub.32925
Abstract
Cell protection against different noxious stimuli like oxidative stress or chemical toxins plays a central role in the treatment of many diseases. The inducible heme oxygenase isoform, heme oxygenase-1 (HO-1), is known to protect cells against a variety of harmful conditions including apoptosis. Because a number of medium strong electrophiles from a series of alpha-X-substituted ...
Cell protection against different noxious stimuli like oxidative stress or chemical toxins plays a central role in the treatment of many diseases. The inducible heme oxygenase isoform, heme oxygenase-1 (HO-1), is known to protect cells against a variety of harmful conditions including apoptosis. Because a number of medium strong electrophiles from a series of alpha-X-substituted 2',3,4,4'-tetramethoxychalcones (alpha-X-TMCs, X = H, F, Cl, Br, I, CN, Me, p-NO2-C6H4, Ph, p-OMe-C6H4, NO2, CF3, COOEt, COOH) had proven to activate Nrf2 resulting in HO-1 induction and inhibit NF-kappa B downstream target genes, their protective effect against staurosporine induced apoptosis and reactive oxygen species (ROS) production was investigated. RAW264.7 macrophages treated with 19 different chalcones (15 alpha-X-TMCs, chalcone, 2'-hydroxychalcone, calythropsin and 2'-hydroxy-3,4,4'-trimethoxychalcone) prior to staurosporine treatment were analyzed for apoptosis and ROS production, as well as HO-1 protein expression and enzyme activity. Additionally, Nrf2 and NF-kappa B activity was assessed. We found that amongst all tested chalcones only E-alpha-(4-methoxyphenyl)-2',3,4,4'-tetramethoxychalcone (E-alpha-p-OMe-C6H4-TMC) demonstrated a distinct, statistically significant antiapoptotic effect in a dose dependent manner, showing no toxic effects, while its double bond isomer Z-alpha-p-OMe-C6H4-TMC displayed no significant activity. Also, E-alpha-p-OMe-C6H4-TMC induced HO-1 protein expression and increased HO-1 activity, whilst inhibition of HO-1 by SnPP-IX abolished its antiapoptotic effect. The only weakly electrophilic chalcone E-alpha-p-OMe-C6H4-TMC reduced the staurosporine triggered formation of ROS, while inducing the translocation of Nrf2 into the nucleus. Furthermore, staurosporine induced NF-kappa B activity was attenuated following E-alpha-p-OMe-C6H4-TMC treatment. Overall, E-alpha-p-OMe-C6H4-TMC demonstrated its effective cytoprotective potential via a non-toxic induction of HO-1 in RAW264.7 macrophages. The observed cytoprotective effect may partly be related to both, the activation of the Nrf2- and inhibition of the NF-kappa B pathway.
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| Item type | Article | ||||
| Journal or Publication Title | PLoS ONE | ||||
| Publisher: | PUBLIC LIBRARY SCIENCE | ||||
|---|---|---|---|---|---|
| Open Access Type: | Gold (with APC) | ||||
| Place of Publication: | SAN FRANCISCO | ||||
| Volume: | 10 | ||||
| Number of Issue or Book Chapter: | 11 | ||||
| Page Range: | e0142932 | ||||
| Date | 2015 | ||||
| Institutions | Chemistry and Pharmacy > Institute of Pharmacy > Pharmaceutical Biology (Prof. Heilmann) Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Dr. Sabine Amslinger | ||||
| Identification Number |
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| Keywords | NF-KAPPA-B; HEME OXYGENASE-1; CARBON-MONOXIDE; BIOLOGICAL-ACTIVITY; MOLECULES; IDENTIFICATION; EXPRESSION; APOPTOSIS; STRESS; RAT; | ||||
| Dewey Decimal Classification | 500 Science > 540 Chemistry & allied sciences | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Partially | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-329254 | ||||
| Item ID | 32925 |
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