Monge 2009 Can J Physiol Pharmacol 87:318-326.: Difference between revisions
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{{Publication | {{Publication | ||
|title=Monge C, Beraud N, Tepp K, Pelloux S, Chahboun S, Kaambre T, Kadaja L, Roosimaa M, Piirsoo A, Tourneur Y, Kuznetsov AV, Saks V, Seppet E (2009) Comparative analysis of the bioenergetics of adult cardiomyocytes and nonbeating HL-1 cells: respiratory chain activities, glycolytic enzyme profiles, and metabolic fluxes. Can | |title=Monge C, Beraud N, Tepp K, Pelloux S, Chahboun S, Kaambre T, Kadaja L, Roosimaa M, Piirsoo A, Tourneur Y, Kuznetsov AV, Saks V, Seppet E (2009) Comparative analysis of the bioenergetics of adult cardiomyocytes and nonbeating HL-1 cells: respiratory chain activities, glycolytic enzyme profiles, and metabolic fluxes. Can J Physiol Pharmacol 87:318-26. | ||
|info=[http://www.ncbi.nlm.nih.gov/pubmed/19370085 PMID: 19370085] | |info=[http://www.ncbi.nlm.nih.gov/pubmed/19370085 PMID: 19370085] | ||
|authors=Monge C, Beraud N, Tepp K, Pelloux S, Chahboun S, Kaambre T, Kadaja L, Roosimaa M, Piirsoo A, Tourneur Y, Kuznetsov AV, Saks V, Seppet E | |authors=Monge C, Beraud N, Tepp K, Pelloux S, Chahboun S, Kaambre T, Kadaja L, Roosimaa M, Piirsoo A, Tourneur Y, Kuznetsov AV, Saks V, Seppet E | ||
|year=2009 | |year=2009 | ||
|journal=Can | |journal=Can J Physiol Pharmacol | ||
|abstract=Comparative analysis of the bioenergetic parameters of adult rat cardiomyocytes (CM) and HL-1 cells with very different structure but similar cardiac phenotype was carried out with the aim of revealing the importance of the cell structure for regulation of its energy fluxes. Confocal microscopic analysis showed very different mitochondrial arrangement in these cells. The cytochrome content per milligram of cell protein was decreased in HL-1 cells by a factor of 7 compared with CM. In parallel, the respiratory chain complex activities were decreased by 4-8 times in the HL-1 cells. On the contrary, the activities of glycolytic enzymes, hexokinase (HK), and pyruvate kinase (PK) were increased in HL-1 cells, and these cells effectively transformed glucose into lactate. At the same time, the creatine kinase (CK) activity was significantly decreased in HL-1 cells. In conclusion, the results of this study comply with the assumption that in contrast to CM in which oxidative phosphorylation is a predominant provider of ATP and the CK system is a main carrier of energy from mitochondria to ATPases, in HL-1 cells the energy metabolism is based mostly on the glycolytic reactions coupled to oxidative phosphorylation through HK. | |abstract=Comparative analysis of the bioenergetic parameters of adult rat cardiomyocytes (CM) and HL-1 cells with very different structure but similar cardiac phenotype was carried out with the aim of revealing the importance of the cell structure for regulation of its energy fluxes. Confocal microscopic analysis showed very different mitochondrial arrangement in these cells. The cytochrome content per milligram of cell protein was decreased in HL-1 cells by a factor of 7 compared with CM. In parallel, the respiratory chain complex activities were decreased by 4-8 times in the HL-1 cells. On the contrary, the activities of glycolytic enzymes, hexokinase (HK), and pyruvate kinase (PK) were increased in HL-1 cells, and these cells effectively transformed glucose into lactate. At the same time, the creatine kinase (CK) activity was significantly decreased in HL-1 cells. In conclusion, the results of this study comply with the assumption that in contrast to CM in which oxidative phosphorylation is a predominant provider of ATP and the CK system is a main carrier of energy from mitochondria to ATPases, in HL-1 cells the energy metabolism is based mostly on the glycolytic reactions coupled to oxidative phosphorylation through HK. | ||
|keywords= | |keywords=Cardiomyocytes, HL-1 cells, Respiration, Cytochromes, Glycolysis, Energy metabolism | ||
|mipnetlab=EE Tallinn Saks VA, FR Grenoble Saks VA, EE Tartu Paju K, EE Tallinn Kaambre T | |||
|discipline=Mitochondrial Physiology, Biomedicine | |||
}} | }} | ||
{{Labeling | {{Labeling | ||
|organism=Rat | |organism=Rat | ||
|tissues= | |tissues=Heart | ||
|preparations=Intact | |preparations=Intact cells | ||
|enzymes=Marker | |enzymes=Marker enzyme | ||
|topics=Substrate | |||
|topics= | |||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
|discipline=Mitochondrial Physiology, Biomedicine | |||
}} | }} |
Latest revision as of 15:36, 15 June 2015
Monge C, Beraud N, Tepp K, Pelloux S, Chahboun S, Kaambre T, Kadaja L, Roosimaa M, Piirsoo A, Tourneur Y, Kuznetsov AV, Saks V, Seppet E (2009) Comparative analysis of the bioenergetics of adult cardiomyocytes and nonbeating HL-1 cells: respiratory chain activities, glycolytic enzyme profiles, and metabolic fluxes. Can J Physiol Pharmacol 87:318-26. |
Monge C, Beraud N, Tepp K, Pelloux S, Chahboun S, Kaambre T, Kadaja L, Roosimaa M, Piirsoo A, Tourneur Y, Kuznetsov AV, Saks V, Seppet E (2009) Can J Physiol Pharmacol
Abstract: Comparative analysis of the bioenergetic parameters of adult rat cardiomyocytes (CM) and HL-1 cells with very different structure but similar cardiac phenotype was carried out with the aim of revealing the importance of the cell structure for regulation of its energy fluxes. Confocal microscopic analysis showed very different mitochondrial arrangement in these cells. The cytochrome content per milligram of cell protein was decreased in HL-1 cells by a factor of 7 compared with CM. In parallel, the respiratory chain complex activities were decreased by 4-8 times in the HL-1 cells. On the contrary, the activities of glycolytic enzymes, hexokinase (HK), and pyruvate kinase (PK) were increased in HL-1 cells, and these cells effectively transformed glucose into lactate. At the same time, the creatine kinase (CK) activity was significantly decreased in HL-1 cells. In conclusion, the results of this study comply with the assumption that in contrast to CM in which oxidative phosphorylation is a predominant provider of ATP and the CK system is a main carrier of energy from mitochondria to ATPases, in HL-1 cells the energy metabolism is based mostly on the glycolytic reactions coupled to oxidative phosphorylation through HK. โข Keywords: Cardiomyocytes, HL-1 cells, Respiration, Cytochromes, Glycolysis, Energy metabolism
โข O2k-Network Lab: EE Tallinn Saks VA, FR Grenoble Saks VA, EE Tartu Paju K, EE Tallinn Kaambre T
Labels:
Organism: Rat
Tissue;cell: Heart
Preparation: Intact cells
Enzyme: Marker enzyme
Regulation: Substrate
HRR: Oxygraph-2k