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Kaufmann, Kai B. ; Al-Rifai, Nafisah ; Ulbrich, Felix ; Schallner, Nils ; Rücker, Hannelore ; Enzinger, Monika ; Petkes, Hermina ; Pitzl, Sebastian ; Goebel, Ulrich ; Amslinger, Sabine

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 und 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.

Veröffentlichungsdatum dieses Volltextes: 30 Nov 2015 14:16
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.32925


Zusammenfassung

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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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftPLoS ONE
Verlag:PUBLIC LIBRARY SCIENCE
Ort der Veröffentlichung:SAN FRANCISCO
Band:10
Nummer des Zeitschriftenheftes oder des Kapitels:11
Seitenbereich:e0142932
Datum2015
InstitutionenChemie und Pharmazie > Institut für Pharmazie > Lehrstuhl Pharmazeutische Biologie (Prof. Heilmann)
Chemie und Pharmazie > Institut für Organische Chemie > Arbeitskreis Dr. Sabine Amslinger
Identifikationsnummer
WertTyp
10.1371/journal.pone.0142932DOI
Stichwörter / KeywordsNF-KAPPA-B; HEME OXYGENASE-1; CARBON-MONOXIDE; BIOLOGICAL-ACTIVITY; MOLECULES; IDENTIFICATION; EXPRESSION; APOPTOSIS; STRESS; RAT;
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 540 Chemie
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenZum Teil
URN der UB Regensburgurn:nbn:de:bvb:355-epub-329254
Dokumenten-ID32925

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