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Involvement of store-operated Ca2+ entry in activation of AMP-activated protein kinase and stimulation of glucose uptake by M3 muscarinic acetylcholine receptors in human neuroblastoma cells
Publication date: December 2014 Source:Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, Volume 1843, Issue 12 Author(s): Maria C. Olianas , Simona Dedoni , Pierluigi Onali Gq/11-coupled muscarinic acetylcholine receptors (mAChRs) belonging to M1, M3 and M5 subtypes have been shown to activate the metabolic sensor AMP-activated protein kinase (AMPK) through Ca2+/calmodulin-dependent protein kinase kinase-β (CaMKKβ)-mediated phosphorylation at Thr172. However, the source of Ca2+ required for this response has not been yet elucidated. Here, we investigated the involvement of store-operated Ca2+ entry (SOCE) ...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - November 11, 2014 Category: Molecular Biology Source Type: research

Dominant negative Ras attenuates pathological ventricular remodeling in pressure overload cardiac hypertrophy
We examined the possible anti-hypertrophic effect of Ras inhibition in vitro using rat neonatal cardiomyocytes (NRCM) and in vivo in the setting of pressure-overload left ventricular (LV) hypertrophy (POH) in rats. Ras functions were modulated via adenovirus directed gene transfer of active mutant Ras-Val12 or dominant negative mutant N17-DN-Ras (DN-Ras). Ras-Val12 expression in vitro activates NFAT resulting in pro-hypertrophic and cardio-toxic effects on NRCM beating and Z-line organization. In contrast, the DN-Ras was antihypertrophic on NRCM, inhibited NFAT and exerted cardio-protective effects attested by preserved NR...
Source: Biochimica et Biophysica Acta (BBA) Molecular Cell Research - September 4, 2015 Category: Molecular Biology Source Type: research