{"owner": "ArrayExpress Uploader", "pop_total": 0, "species": "mouse", "factors": [{"GSM721517": {"genotype": "PKCzeta knock out"}}, {"GSM721517": {"genotype": "PKCzeta knock out"}}, {"GSM721517": {"genotype": "PKCzeta knock out"}}, {"GSM721517": {"genotype": "PKCzeta knock out"}}, {"GSM721517": {"genotype": "PKCzeta knock out"}}, {"GSM721522": {"genotype": "wild type"}}, {"GSM721522": {"genotype": "wild type"}}, {"GSM721522": {"genotype": "wild type"}}, {"GSM721522": {"genotype": "wild type"}}, {"GSM721522": {"genotype": "wild type"}}], "id": 6465, "ownerprofile_id": "arrayexpress_sid", "platform": 6, "summary_wrapped": "Background: Gq-coupled G protein-coupled receptors (GPCR) mediate the actions of a variety of messengers that are key regulators of...", "pubmed_id": 22232556, "geo_gse_id": "E-GEOD-29145", "owner_profile": "/profile/8773/arrayexpressuploader", "factor_count": 1, "sample_count": 10, "tags": ["axis", "heart", "protein"], "lastmodified": "Dec.12, 2014", "is_default": false, "geo_gds_id": "", "slug": "transcription-profiling-by-array-of-hearts-from-pk", "geo_id_plat": "E-GEOD-29145_A-AFFY-45", "name": "Transcription profiling by array of hearts from PKCzeta knock out mice.", "created": "Nov.11, 2014", "summary": "Background: Gq-coupled G protein-coupled receptors (GPCR) mediate the actions of a variety of messengers that are key regulators of cardiovascular function. Enhanced Gaq-mediated signaling plays an important role in cardiac hypertrophy and in the transition to heart failure. We have recently described that Gaq acts as an adaptor protein that facilitates PKCz-mediated activation of ERK5 in epithelial cells.  Since the ERK5 cascade is known to be involved in cardiac hypertrophy, we have investigated the potential relevance of this pathway in Gq-dependent  signaling in cardiac cells. Methodology/Principal Findings: We have explored the mechanisms involved in Gq-coupled GPCR-mediated stimulation of the ERK5 pathway and its functional consequences in cardiac hypertrophy using both cultured cardiac cells and an animal model of angiotensin- dependent induction of cardiac hypertrophy in wild-type and PKCz knockout mice. We find that PKC\u03b6 is required for the activation of the ERK5 pathway by Gq-coupled GPCR in cardiomyocytes and in cardiac fibroblasts. Stimulation of ERK5 by angiotensin II is blocked upon pharmacological inhibition or siRNA-mediated silencing of PKCz in primary cultures of cardiac cells and in cardiomyocytes isolated from PKCz-deficient mice. Moreover, these mice do not develop cardiac hypertrophy upon chronic challenge with angiotensin II, as assessed by morphological, biomarker, electrocardiographic and global gene expression pattern analysis. Conclusion/Significance: Our data put forward that PKC\u03b6 is essential for Gq- dependent ERK5 activation in cardiac cells and indicate a key cardiac physiological role for this recently described Gaq/PKCz/MEK5 signaling axis. Littermate wild-type and PKCz -/- male mice (32 weeks of age) were subjected to continuous infusion of angiotensin II (or PBS as a control) for 14 days, a well established model for the induction of cardiac hypertrohy", "source": "http://www.ebi.ac.uk/arrayexpress/experiments/E-GEOD-29145", "sample_source": "http://www.ebi.ac.uk/arrayexpress/experiments/E-GEOD-29145/samples/"}