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Pharmacological targeting of glucose-6-phosphate dehydrogenase in human erythrocytes by Bay 11-7082, parthenolide and dimethyl fumarate.

Abstract：

:In mature erythrocytes, glucose-6-phosphate dehydrogenase (G6PDH) and 6-phosphogluconate dehydrogenase (6PGDH) yield NADPH, a crucial cofactor of the enzyme glutathione reductase (GR) converting glutathione disulfide (GSSG) into its reduced state (GSH). GSH is essential for detoxification processes in and survival of erythrocytes. We explored whether the anti-inflammatory compounds Bay 11-7082, parthenolide and dimethyl fumarate (DMF) were able to completely deplete a common target (GSH), and to impair the function of upstream enzymes of GSH recycling and replenishment. Treatment of erythrocytes with Bay 11-7082, parthenolide or DMF led to concentration-dependent eryptosis resulting from complete depletion of GSH. GSH depletion was due to strong inhibition of G6PDH activity. Bay 11-7082 and DMF, but not parthenolide, were able to inhibit the GR activity. This approach "Inhibitors, Detection of their common target that is completely depleted or inactivated when pharmacologically relevant concentrations of each single inhibitor are applied, Subsequent functional analysis of upstream enzymes for this target" (IDS), can be applied to a broad range of inhibitors and cell types according to the selected target. The specific G6PDH inhibitory effect of these compounds may be exploited for the treatment of human diseases with high NADPH and GSH consumption rates, including malaria, trypanosomiasis, cancer or obesity.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Ghashghaeinia M,Giustarini D,Koralkova P,Köberle M,Alzoubi K,Bissinger R,Hosseinzadeh Z,Dreischer P,Bernhardt I,Lang F,Toulany M,Wieder T,Mojzikova R,Rossi R,Mrowietz U

doi

10.1038/srep28754

subject

Has Abstract

pub_date

2016-06-29 00:00:00

pages

28754

issn

2045-2322

pii

srep28754

journal_volume

6

pub_type

杂志文章

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