Cardiac hypertrophy produced in vivo by pressure overload is characterized by selective up-regulation of the fetal/neonatal beta-cardiac myosin heavy chain (MHC) isogene. However, a molecular signal for beta-MHC isogene induction has not been identified. We examined cardiac MHC isogene expression in a cell culture model for hypertrophy. alpha-MHC and beta-MHC iso-protein and iso-mRNA levels in cultured cardiac myocytes were quantified during hypertrophy stimulated by the alpha 1-adrenergic agonist, norepinephrine (NE). beta-MHC iso-protein content was increased 3.2-fold vs. control (P less than 0.001), whereas alpha-MHC isoprotein content was not changed significantly (1.4-fold vs. control, P = NS). MHC iso-mRNA levels were quantified by nuclease S1 analysis, using a single oligonucleotide probe. NE increased beta-MHC iso-mRNA content by 3.9-fold vs. control (P less than 0.001), but there was no change in alpha-MHC iso-mRNA (1.1-fold vs. control, P = NS). The NE-stimulated increase in beta-MHC iso-mRNA preceded in time the increase in beta-MHC isoprotein accumulation. The EC50 for NE induction of beta-MHC was 40 nM, and pharmacologic experiments indicated alpha 1-adrenergic receptor specificity. alpha-MHC isogene expression was predominant in control myocytes (68% alpha-isoprotein and 60% alpha-iso-mRNA). In contrast, beta-MHC expression was equal to alpha-MHC or predominant after treatment with NE (51% beta-isoprotein and 69% beta-iso-mRNA). Thus, alpha 1-adrenergic receptor stimulation increases the cellular contents of beta-MHC iso-mRNA and beta-MHC isoprotein during hypertrophy of cultured neonatal rat cardiac myocytes, but does not change the levels of alpha-MHC iso-mRNA or isoprotein. The effect on beta-MHC is mediated primarily at the level of mRNA steady-state level (pretranslational). Activation of the alpha 1-adrenergic receptor is the first identified molecular signal for increased beta-MHC isogene expression in a model of cardiac hypertrophy.
L E Waspe, C P Ordahl, P C Simpson
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Journal of Cardiovascular Electrophysiology | 1994 |
Regulation of rat ventricular myosin heavy chain expression by serum and contractile activity
M Qi, K Ojamaa, EG Eleftheriades, I Klein, AM Samarel |
American journal of physiology. Cell physiology | 1994 |
Ins 1,4,5-P3 and Ca2+ signaling in quiescent neonatal cardiac myocytes
CA Hansen, SK Joseph, JD Robishaw |
Biochimica et Biophysica Acta (BBA) - Molecular Cell Research | 1994 |
Contractile arrest increases sarcoplasmic reticulum calcium uptake and SERCA2 gene expression in cultured neonatal rat heart cells
JW Bassani, M Qi, AM Samarel, DM Bers |
Circulation research | 1994 |
Cloning of the rat alpha 1C-adrenergic receptor from cardiac myocytes. alpha 1C, alpha 1B, and alpha 1D mRNAs are present in cardiac myocytes but not in cardiac fibroblasts
AF Stewart, DG Rokosh, BA Bailey, LR Karns, KC Chang, CS Long, K Kariya, PC Simpson |
Circulation research | 1994 |
Electrical stimulation of contractile activity accelerates growth of cultured neonatal cardiocytes
TB Johnson, RL Kent, BA Bubolz, PJ McDermott |
Circulation research | 1994 |
Myosin heavy chain synthesis is independently regulated in hypertrophy and atrophy of isolated adult cardiac myocytes
WA Clark, SJ Rudnick, LC Andersen, JJ LaPres |
The Journal of biological chemistry | 1994 |
An enhancer core element mediates stimulation of the rat beta-myosin heavy chain promoter by an alpha 1-adrenergic agonist and activated beta-protein kinase C in hypertrophy of cardiac myocytes
K Kariya, LR Karns, PC Simpson |
The Journal of biological chemistry | 1994 |
An E-box/M-CAT hybrid motif and cognate binding protein(s) regulate the basal muscle-specific and cAMP-inducible expression of the rat cardiac alpha-myosin heavy chain gene
MP Gupta, M Gupta, R Zak |
The Journal of biological chemistry | 1994 |
A nuclear pathway for alpha 1-adrenergic receptor signaling in cardiac cells
A Ardati, M Nemer |
The EMBO Journal | 1993 |
A new serum-responsive, cardiac tissue-specific transcription factor that recognizes the MEF-2 site in the myosin light chain-2 promoter
MD Zhou, SK Goswami, ME Martin, MA Siddiqui |
Molecular and cellular biology | 1993 |
Alpha-, beta-MHC mRNA quantification in adult cardiomyocytes by in situhybridization: effect of thyroid hormone
I Dubus, A Mercadier, O Lucas, F Contard, O Nallet, P Oliviero, L Rappaport, JL Samuel |
American journal of physiology. Cell physiology | 1993 |
Regulation of myosin heavy chain genes in the heart
E Morkin |
Circulation | 1993 |
Antithetical accumulation of myosin heavy chain but not alpha-actin mRNA isoforms during early stages of pressure-overload-induced rat cardiac hypertrophy
C Chassagne, C Wisnewsky, K Schwartz |
Circulation research | 1993 |
Regulation of hypertrophy and atrophy in cultured adult heart cells
WA Clark, SJ Rudnick, JJ LaPres, LC Andersen, MC LaPointe |
Circulation research | 1993 |
Growth Factors and the Cardiovascular System
P Cummins |
1993 | |
Myocardial alpha-thrombin receptor activation induces hypertrophy and increases atrial natriuretic factor gene expression
CC Glembotski, CE Irons, KA Krown, SF Murray, AB Sprenkle, CA Sei |
The Journal of biological chemistry | 1993 |
Transcriptional enhancer factor-1 in cardiac myocytes interacts with an alpha 1-adrenergic- and beta-protein kinase C-inducible element in the rat beta-myosin heavy chain promoter
K Kariya, IK Farrance, PC Simpson |
The Journal of biological chemistry | 1993 |
Hemodynamic regulation of myosin heavy chain gene expression. Studies in the transplanted rat heart
I Klein, K Ojamaa, AM Samarel, R Welikson, C Hong |
Journal of Clinical Investigation | 1992 |
Transcriptional activation of the cardiac myosin light chain 2 and atrial natriuretic factor genes by protein kinase C in neonatal rat ventricular myocytes
HE Shubeita, EA Martinson, MV Bilsen, KR Chien, JH Brown |
Proceedings of the National Academy of Sciences | 1992 |
Mapping of mRNA isoforms with an oligonucleotide probe: exonuclease VII compared with endonucleases
C Chassagne, K Schwartz |
Nucleic Acids Research | 1992 |
Regulation of human cardiac myosin heavy chain genes: The effect of catecholamine
JJ Chen, DL Wang, NL Shih, KH Hsu, WP Lien, CC Liew |
Biochemical and Biophysical Research Communications | 1992 |
Discordance between gene regulation in vitro and in vivo
R N Kitsis, L A Leinwand |
Gene expression | 1992 |
Desensitization of adenylate cyclase and increase of Gi alpha in cardiac hypertrophy due to acquired hypertension
M Böhm, P Gierschik, A Knorr, K Larisch, K Weismann, E Erdmann |
Hypertension | 1992 |
Role of epicardial mesothelial cells in the modification of phenotype and function of adult rat ventricular myocytes in primary coculture
H Eid, DM Larson, JP Springhorn, MA Attawia, RC Nayak, TW Smith, RA Kelly |
Circulation research | 1992 |
Effects of norepinephrine on the oxidative pentose phosphate pathway in the rat heart
HG Zimmer, B Lankat-Buttgereit, C Kolbeck-Rühmkorff, T Nagano, W Zierhut |
Circulation research | 1992 |
Cardiac Adaptation in Heart Failure
J Holtz, H Drexler, H Just |
1992 | |
Cardiac expressions of alpha- and beta-myosin heavy chains and sarcomeric alpha-actins are regulated through transcriptional mechanisms. Results from nuclear run-on assays in isolated rat cardiac nuclei
KR Boheler, C Chassagne, X Martin, C Wisnewsky, K Schwartz |
The Journal of biological chemistry | 1992 |
Positive regulation of the skeletal alpha-actin gene by Fos and Jun in cardiac myocytes
NH Bishopric, V Jayasena, KA Webster |
The Journal of biological chemistry | 1992 |
Induction of atrial natriuretic factor and myosin light chain-2 gene expression in cultured ventricular myocytes by electrical stimulation of contraction
PM McDonough, CC Glembotski |
The Journal of biological chemistry | 1992 |
Contribution of both ?- and ?-adrenoceptors to the inotropic effects of catecholamines in the rabbit heart
U Jahnel, B Kaufmann, M Rombusch, H Nawrath |
Naunyn-Schmiedeberg's Archives of Pharmacology | 1992 |
A single myocardial stretch or decreased systolic fiber shortening stimulates the expression of heat shock protein 70 in the isolated, erythrocyte-perfused rabbit heart
AA Knowlton, FR Eberli, P Brecher, GM Romo, A Owen, CS Apstein |
Journal of Clinical Investigation | 1991 |
Segregation of atrial-specific and inducible expression of an atrial natriuretic factor transgene in an in vivo murine model of cardiac hypertrophy
HA Rockman, RS Ross, AN Harris, KU Knowlton, ME Steinhelper, LJ Field, J Ross, KR Chien |
Proceedings of the National Academy of Sciences | 1991 |
Activation of alpha-myosin heavy chain gene expression by cAMP in cultured fetal rat heart myocytes
MP Gupta, M Gupta, A Stewart, R Zak |
Biochemical and Biophysical Research Communications | 1991 |
Direct effect of increased hemodynamic load on cardiac mass
B Korecky, M Masika |
Circulation research | 1991 |
Effect of positive inotropic agents on myosin isozyme population and mechanical activity of cultured rat heart myocytes
H Rupp, HJ Berger, A Pfeifer, K Werdan |
Circulation research | 1991 |
Current Topics in Heart Failure
RW Gülch, G Kissling |
1991 | |
Molecular Mechanisms of Cellular Growth
HE Morgan |
1991 | |
Co-regulation of the atrial natriuretic factor and cardiac myosin light chain-2 genes during alpha-adrenergic stimulation of neonatal rat ventricular cells. Identification of cis sequences within an embryonic and a constitutive contractile protein gene which mediate inducible expression
KU Knowlton, E Baracchini, RS Ross, AN Harris, SA Henderson, SM Evans, CC Glembotski, KR Chien |
The Journal of biological chemistry | 1991 |
Egr-1, a serum-inducible zinc finger protein, regulates transcription of the rat cardiac alpha-myosin heavy chain gene
MP Gupta, M Gupta, R Zak, VP Sukhatme |
The Journal of biological chemistry | 1991 |
Expression of a constitutively activated mutant of the beta-isozyme of protein kinase C in cardiac myocytes stimulates the promoter of the beta-myosin heavy chain isogene
K Kariya, LR Karns, PC Simpson |
The Journal of biological chemistry | 1991 |
Characterization of a promoter element required for transcription in myocardial cells
RC Iannello, JH Mar, CP Ordahl |
The Journal of biological chemistry | 1991 |
Adrenergic hormones and control of cardiac myocyte growth
P Simpson, C Simpson, K Kariya, LR Karns, CS Long, JS Karliner |
Molecular and Cellular Biochemistry | 1991 |
Changes in myosin and creatine kinase mRNA levels with cardiac hypertrophy and hypothyroidism
GT Schuyler, LR Yarbrough |
Basic Research in Cardiology | 1990 |