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ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo
This study describes the isolation and subsequent characterization of four mammalian cell lines resistant to ethidium bromide (EB). Treatment of the simian virus 40- (SV40) transformed hamster cell line F5-1 first led to the establishment of the F2 cell line, which is resistant to 2 µg EB/ml. At thi...
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1973
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2109030/ https://www.ncbi.nlm.nih.gov/pubmed/4353638 |
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author | Klietmann, Wolfgang Sato, Nobuhiro Nass, Margit M. K. |
author_facet | Klietmann, Wolfgang Sato, Nobuhiro Nass, Margit M. K. |
author_sort | Klietmann, Wolfgang |
collection | PubMed |
description | This study describes the isolation and subsequent characterization of four mammalian cell lines resistant to ethidium bromide (EB). Treatment of the simian virus 40- (SV40) transformed hamster cell line F5-1 first led to the establishment of the F2 cell line, which is resistant to 2 µg EB/ml. At this concentration cytochromes c and b are present in almost normal or only slightly diminished amounts, whereas cytochromes a + a (3) show an obvious decrease. The mitochondria of the F2 cell show a normal ultrastructure, not distinct from the parental cell line F5-1, and contain closed circular DNA. The sensitive parental F5-1 cells, however, when exposed to the same dye concentration exhibit the typical EB-induced ultrastructural changes in the mitochondria, and no more component I mitochondrial DNA can be demonstrated. 1 yr after establishment we derived from the F2 cell three more cell lines, resistant against 4, 8, and 16 µg of EB/ml. These cell lines, termed F4, F8, and F16, respectively, also revealed relatively intact-appearing mitochondria, although distinguishable from F5-1 and F2 mitochondria by a more condensed or unorthodox cristae conformation. F4, F8, and F16 cell lines contained closed circular mitochondrial DNA in the same position as that of the parental F5-1 cells, when analyzed in an isopycnic CsCl-EB gradient. A small shoulder at the lower density side of the DNA I peaks was observed. The newly acquired drug resistance of the F cells is hereditarily transmitted to the progeny cells and retained even after a period of growth in EB-free medium. |
format | Text |
id | pubmed-2109030 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1973 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21090302008-05-01 ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo Klietmann, Wolfgang Sato, Nobuhiro Nass, Margit M. K. J Cell Biol Article This study describes the isolation and subsequent characterization of four mammalian cell lines resistant to ethidium bromide (EB). Treatment of the simian virus 40- (SV40) transformed hamster cell line F5-1 first led to the establishment of the F2 cell line, which is resistant to 2 µg EB/ml. At this concentration cytochromes c and b are present in almost normal or only slightly diminished amounts, whereas cytochromes a + a (3) show an obvious decrease. The mitochondria of the F2 cell show a normal ultrastructure, not distinct from the parental cell line F5-1, and contain closed circular DNA. The sensitive parental F5-1 cells, however, when exposed to the same dye concentration exhibit the typical EB-induced ultrastructural changes in the mitochondria, and no more component I mitochondrial DNA can be demonstrated. 1 yr after establishment we derived from the F2 cell three more cell lines, resistant against 4, 8, and 16 µg of EB/ml. These cell lines, termed F4, F8, and F16, respectively, also revealed relatively intact-appearing mitochondria, although distinguishable from F5-1 and F2 mitochondria by a more condensed or unorthodox cristae conformation. F4, F8, and F16 cell lines contained closed circular mitochondrial DNA in the same position as that of the parental F5-1 cells, when analyzed in an isopycnic CsCl-EB gradient. A small shoulder at the lower density side of the DNA I peaks was observed. The newly acquired drug resistance of the F cells is hereditarily transmitted to the progeny cells and retained even after a period of growth in EB-free medium. The Rockefeller University Press 1973-07-01 /pmc/articles/PMC2109030/ /pubmed/4353638 Text en Copyright © 1973 by The Rockefeller University Press This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/). |
spellingShingle | Article Klietmann, Wolfgang Sato, Nobuhiro Nass, Margit M. K. ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo |
title | ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo |
title_full | ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo |
title_fullStr | ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo |
title_full_unstemmed | ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo |
title_short | ESTABLISHMENT AND CHARACTERIZATION OF ETHIDIUM BROMIDE RESISTANCE IN SIMIAN VIRUS 40-TRANSFORMED HAMSTER CELLS : Effects on Mitochondria In Vivo |
title_sort | establishment and characterization of ethidium bromide resistance in simian virus 40-transformed hamster cells : effects on mitochondria in vivo |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2109030/ https://www.ncbi.nlm.nih.gov/pubmed/4353638 |
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