| Oxidative phosphorylation properties of mitochondria isolated from transplanted hepatoma. | |
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MedLine Citation:
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PMID: 186116 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Mitochondria were isolated from Morris hepatomas with rapid (types 3683, 7777, and 3924A) and intermediate (types 5123D and 7800) growth rates, using proteolytic digestion of minced tumor tissue to release the particles. Mitochondria isolated by the same procedure from rat liver were employed as controls. All the hepatoma mitochondria were capable of coupled respiration with normal phosphorylation yields (ADP/O) and respiratory control ratios ranging from 2 to considerably more than 10. Particles from hepatomas 7777 and 7800 exhibited properties closest to liver mitochondria, while those from hepatomas 3683 and 3924A showed the greatest difference. All the hepatoma mitochondria were capable of oxidizing succinate, 3-hydroxybutyrate and monoamines. However, the oxidation rates of the latter two substrates by mitochondria from hepatomas 3683 and 3924A were only a fraction of the control rates. These differences appeared to be due, at least in part, to the structural instability of the isolated hepatoma mitochondria. In contrast to the reports of others, all hepatoma mitochondria exhibited considerable stimulation of ATPase activity by uncouplers. Maximal stimulation of ATPase activity by representatives of three classes of uncouplers was in all instances comparable to the values obtained for rat liver mitochondria. |
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Authors:
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R M Kaschnitz; Y Hatefi; H P Morris |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Biochimica et biophysica acta Volume: 449 ISSN: 0006-3002 ISO Abbreviation: Biochim. Biophys. Acta Publication Date: 1976 Nov |
Date Detail:
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Created Date: 1977-01-25 Completed Date: 1977-01-25 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0217513 Medline TA: Biochim Biophys Acta Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 224-35 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid Phosphatase
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metabolism Adenosine Triphosphatases / metabolism Animals Carbonyl Cyanide m-Chlorophenyl Hydrazone / pharmacology Carcinoma, Hepatocellular / metabolism* Dinitrophenols / pharmacology Hydroxybutyrate Dehydrogenase / metabolism Liver Neoplasms / metabolism* Mitochondria / drug effects, metabolism* Mitochondria, Liver / drug effects, metabolism* Monoamine Oxidase / metabolism Neoplasms, Experimental / metabolism Oxidative Phosphorylation* / drug effects Oxygen Consumption / drug effects Rats Rutamycin / pharmacology |
| Chemical | |
Reg. No./Substance:
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0/Dinitrophenols; 1404-59-7/Rutamycin; 555-60-2/Carbonyl Cyanide m-Chlorophenyl Hydrazone; EC 1.1.1.30/Hydroxybutyrate Dehydrogenase; EC 1.4.3.4/Monoamine Oxidase; EC 3.1.3.2/Acid Phosphatase; EC 3.6.1.-/Adenosine Triphosphatases |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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