Project description:Study on changes in gene expression in primary cultures of neonatal rat ventricular cardiomyocytes to electric stimulation. Through comparing non-stimulated, stimulated and blebbistatin supplemented and stimulated cultures we set out to identify the genes that are specifically activated by electric pulsing separate from cardiomyocyte contractions. After initial recovery phase, primary cultures of neonatal rat ventricular cardiomyocytes were cultured for 3 days without pulsing, with electric pulsing or with electric pulsing combined with blebbistatin. Per treatment: 3 arrays, with samples obtained from 3 separate series of cardiomyocyte isolation and culturing. Per array: sample prepared from pooled (1:1) RNA from duplicate experiments.
Project description:Study on changes in gene expression in primary cultures of neonatal rat ventricular cardiomyocytes to electric stimulation. Through comparing non-stimulated, stimulated and blebbistatin supplemented and stimulated cultures we set out to identify the genes that are specifically activated by electric pulsing separate from cardiomyocyte contractions.
Project description:Neonatal rat ventricular myocytes cultured for 48 hours without stimulation, in the presence of twenty micromolar phenylephrine, or in the presence of one micromolar PAMH. Keywords = Rattus Keywords = Ventricular Myocytes Keywords = Cardiomyocytes Keywords = Hypertrophy Keywords = Phenylephrine Keywords = PAMH Keywords = 5-hydroxytryptamine Keywords = Pyridine Keywords: repeat sample
Project description:We addressed the question of which protein kinases are expressed in cardiomyocytes. We assessed the changes during postnatal development, comparing profiles in rat neonatal ventricular cardiomyocytes (NVMs) with adult ventricular cardiomyocytes (AVMs). Neonatal and adult rat ventricular cardiomyocytes prepared according to established procedures (Marshall et al. PLoS ONE 2010 5(4):e10027; Fuller and Sugden, FEBs Lett. 1989 247:209-12; Rodrigues and Severson In Biochemical Techniques in the Heart (McNeill, J. H., Ed.) pp 101-115, CRC Press, New York.). mRNA expression profiles compared using Affymetrix rat genome 230 2.0 arrays.
Project description:miR-222 overexpression leads to promotion of proliferation and hypertrophy and inhibition of apoptosis in in primary neonatal rat ventricular cardiomyocytes (NRVMs). Isolated primary neonatal rat ventricular cardiomyocytes were plated in 6 cm BD Primaria tissue culture dishes. Transfection of microRNA precursors or scramble control (0.4 μM) was carried out using Lipofectamine RNAiMAX (Invitrogen) as recommended by the manufacturer. Forty-eight hours after transfection, RNAs from cultured cells and tissues were isolated with Tryzol (Invitrogen) following the manufactures’ manuals. Total RNA was harvested and submitted to the Dana-Farber Cancer Institute Molecular Diagnostics Laboratory for assay. These results revealed miR-222 regulated gene expression in primary neonatal rat ventricular cardiomyocytes.
