Eimre 2008 Biochim Biophys Acta: Difference between revisions
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{{Labeling | {{Labeling | ||
|area=Genetic knockout;overexpression | |||
|organism=Rat | |organism=Rat | ||
|tissues=Heart | |tissues=Heart | ||
|preparations=Intact cells, Enzyme | |preparations=Intact cells, Enzyme | ||
|enzymes=Complex I, Complex II; Succinate Dehydrogenase, Complex III, Complex IV; Cytochrome c Oxidase, Complex V; ATP Synthase, Marker Enzyme | |enzymes=Complex I, Complex II; Succinate Dehydrogenase, Complex III, Complex IV; Cytochrome c Oxidase, Complex V; ATP Synthase, Marker Enzyme | ||
|couplingstates=OXPHOS | |couplingstates=OXPHOS | ||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
|discipline=Mitochondrial Physiology, Biomedicine | |discipline=Mitochondrial Physiology, Biomedicine | ||
}} | }} |
Revision as of 23:41, 11 August 2013
Eimre M, Paju K, Pelloux S, Beraud N, Roosimaa M, Kadaja L, Gruno M, Peet N, Orlova E, Remmelkoor R, Piirsoo A, Saks V, Seppet E (2008) Distinct organization of energy metabolism in HL-1 cardiac cell line and cardiomyocytes. Biochim Biophys Acta 1777: 514-524. |
Eimre M, Paju K, Pelloux S, Beraud N, Roosimaa M, Kadaja L, Gruno M, Peet N, Orlova E, Remmelkoor R, Piirsoo A, Saks V, Seppet E (2008) Biochim Biophys Acta
Abstract: Expression and function of creatine kinase (CK), adenylate kinase (AK) and hexokinase (HK) isoforms in relation to their roles in regulation of oxidative phosphorylation (OXPHOS) and intracellular energy transfer were assessed in beating (B) and non-beating (NB) cardiac HL-l cell lines and adult rat cardiomyocytes or myocardium. In both types of HL-1 cells, the AK2, CKB, HK1 and HK2 genes were expressed at higher levels than the CKM, CKMT2 and AK1 genes. Contrary to the saponin-permeabilized cardiomyocytes the OXPHOS was coupled to mitochondrial AK and HK but not to mitochondrial CK, and neither direct transfer of adenine nucleotides between CaMgATPases and mitochondria nor functional coupling between CK-MM and CaMgATPases was observed in permeabilized HL-1 cells. The HL-1 cells also exhibited deficient complex I of the respiratory chain. In conclusion, contrary to cardiomyocytes where mitochondria and CaMgATPases are organized into tight complexes which ensure effective energy transfer and feedback signaling between these structures via specialized pathways mediated by CK and AK isoforms and direct adenine nucleotide channeling, these complexes do not exist in HL-1 cells due to less organized energy metabolism. โข Keywords: HL-1 cell, Heart, Energy transfer, Kinase, Gene expression
โข O2k-Network Lab: EE_Tallinn_Saks VA, FR_Grenoble_Saks VA, EE_Tartu_Seppet EK
Labels: MiParea: Genetic knockout;overexpression
Organism: Rat
Tissue;cell: Heart
Preparation: Intact cells, Enzyme
Enzyme: Complex I, Complex II; Succinate Dehydrogenase"Complex II; Succinate Dehydrogenase" is not in the list (Adenine nucleotide translocase, Complex I, Complex II;succinate dehydrogenase, Complex III, Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Inner mt-membrane transporter, Marker enzyme, Supercomplex, TCA cycle and matrix dehydrogenases, ...) of allowed values for the "Enzyme" property., Complex III, Complex IV; Cytochrome c Oxidase"Complex IV; Cytochrome c Oxidase" is not in the list (Adenine nucleotide translocase, Complex I, Complex II;succinate dehydrogenase, Complex III, Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Inner mt-membrane transporter, Marker enzyme, Supercomplex, TCA cycle and matrix dehydrogenases, ...) of allowed values for the "Enzyme" property., Complex V; ATP Synthase"Complex V; ATP Synthase" is not in the list (Adenine nucleotide translocase, Complex I, Complex II;succinate dehydrogenase, Complex III, Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Inner mt-membrane transporter, Marker enzyme, Supercomplex, TCA cycle and matrix dehydrogenases, ...) of allowed values for the "Enzyme" property., Marker Enzyme"Marker Enzyme" is not in the list (Adenine nucleotide translocase, Complex I, Complex II;succinate dehydrogenase, Complex III, Complex IV;cytochrome c oxidase, Complex V;ATP synthase, Inner mt-membrane transporter, Marker enzyme, Supercomplex, TCA cycle and matrix dehydrogenases, ...) of allowed values for the "Enzyme" property.
Coupling state: OXPHOS
HRR: Oxygraph-2k