Braeunig, Joerg H. and Schweda, Frank and Han, Pyung-Lim and Seifert, Roland (2013) Similarly Potent Inhibition of Adenylyl Cyclase by P-Site Inhibitors in Hearts from Wild Type and AC5 Knockout Mice. PLOS ONE, 8 (7): e68009. ISSN 1932-6203,
Full text not available from this repository. (Request a copy)Abstract
Adenylyl cyclase type 5 (AC5) was described as major cardiac AC isoform. The knockout of AC5 (AC5KO) exerted cardioprotective effects in heart failure. Our study explored the impact of AC5KO on mouse heart AC activities and evaluated putative AC5-selective inhibitors. In cardiac membranes from AC5KO mice, basal AC activity was decreased, while AC stimulation was intact. The putative AC5-selective P-site inhibitors SQ22,536 [9-(tetra-hydro-2-furanyl)-9H-purin-6-amine], vidarabine (9-beta-D-arabinosyladenine) and NKY80 [2-amino-7-(2-furanyl)-7,8-dihydro-5(6H)-quinazolinone] inhibited recombinant AC5 more potently than AC2 and AC1, but selectivity was only modest (similar to 4-40-fold). These compounds inhibited cardiac AC from WT and AC5KO mice with similar potencies. In conclusion, AC regulation in AC5KO hearts was unimpaired, questioning the supposed dominant role of AC5 in the heart. Moreover, the AC inhibitors SQ22,536, NKY80 and vidarabine lack adequate selectivity for AC5 and, therefore, do not present suitable tools to study AC5-specific functions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTITATIVE PCR; SF9 CELLS; DISRUPTION; PROTEIN; EXPRESSION; ISOFORMS; EFFICIENCY; STRESS; VI; STIMULATION; |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Physiologie > Prof. Dr. Frank Schweda |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Apr 2020 08:37 |
| Last Modified: | 07 Apr 2020 08:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16448 |
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