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A subset of histamine receptor ligands improve thermotolerance of the yeast S accharomyces cerevisiae
Author(s) -
Papamichael K.,
Delitheos B.,
Tiligada E.
Publication year - 2013
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/jam.12055
Subject(s) - saccharomyces cerevisiae , yeast , library science , medical school , medicine , classics , history , biology , computer science , medical education , genetics
Aims Histamine interacts with the stress response in eukaryotes. This study investigated the effects of antihistamines on the heat shock ( HS ) response in yeast, thereby exploring their functions in a well‐established histamine receptor (H x R)‐free model. Methods and Results Stress response was evaluated by determining growth and viability of postlogarithmic phase grown yeast cultures after HS at 53°C for 30 min. The effects of H x R ligands were investigated following short‐ and long‐term administration. The H 1 R antagonist dimethindene exerted dose‐related antifungal actions, whereas the H 2 R antagonist ranitidine failed to elicit any effect. In contrast, the H 3/4 R and H 4 R ligands, thioperamide and JNJ 7777120, respectively, induced the thermotolerant phenotype. The circumvention of thermotolerance by cycloheximide and the induction of Hsp70 and Hsp104 expression indicated the contribution of de novo protein synthesis in the adaptive process, likely directed towards alterations in Hsp expression. Conclusions The data provide evidence for the differential function of H x R ligands in thermotolerance induction in yeast. Significance and Impact of the Study First demonstration of the action of antihistamines in the HS response in yeast. The work supports the potential H x R‐independent functions of histaminergic compounds in fungal adaptation and stimulates research on the prospect of their exploitation in eukaryotic (patho)physiology.