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Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells
BACKGROUND: Epidemiological case-control studies have revealed associations between mitochondrial haplogroups and the onset and/or progression of various multifactorial diseases. For instance, mitochondrial haplogroup T was previously shown to be associated with vascular diseases, including coronary...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3530588/ https://www.ncbi.nlm.nih.gov/pubmed/23300652 http://dx.doi.org/10.1371/journal.pone.0052367 |
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author | Mueller, Edith E. Brunner, Susanne M. Mayr, Johannes A. Stanger, Olaf Sperl, Wolfgang Kofler, Barbara |
author_facet | Mueller, Edith E. Brunner, Susanne M. Mayr, Johannes A. Stanger, Olaf Sperl, Wolfgang Kofler, Barbara |
author_sort | Mueller, Edith E. |
collection | PubMed |
description | BACKGROUND: Epidemiological case-control studies have revealed associations between mitochondrial haplogroups and the onset and/or progression of various multifactorial diseases. For instance, mitochondrial haplogroup T was previously shown to be associated with vascular diseases, including coronary artery disease and diabetic retinopathy. In contrast, haplogroup H, the most frequent haplogroup in Europe, is often found to be more prevalent in healthy control subjects than in patient study groups. However, justifications for the assumption that haplogroups are functionally distinct are rare. Therefore, we attempted to compare differences in mitochondrial function between haplogroup H and T cybrids. METHODOLOGY/PRINCIPAL FINDINGS: Mitochondrial haplogroup H and T cybrids were generated by fusion of HEK293 cells devoid of mitochondrial DNA with isolated thrombocytes of individuals with the respective haplogroups. These cybrid cells were analyzed for oxidative phosphorylation (OXPHOS) enzyme activities, mitochondrial DNA (mtDNA) copy number, growth rate and susceptibility to reactive oxygen species (ROS). We observed that haplogroup T cybrids have higher survival rate when challenged with hydrogen peroxide, indicating a higher capability to cope with oxidative stress. CONCLUSIONS/SIGNIFICANCE: The results of this study show that functional differences exist between HEK293 cybrid cells which differ in mitochondrial genomic background. |
format | Online Article Text |
id | pubmed-3530588 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-35305882013-01-08 Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells Mueller, Edith E. Brunner, Susanne M. Mayr, Johannes A. Stanger, Olaf Sperl, Wolfgang Kofler, Barbara PLoS One Research Article BACKGROUND: Epidemiological case-control studies have revealed associations between mitochondrial haplogroups and the onset and/or progression of various multifactorial diseases. For instance, mitochondrial haplogroup T was previously shown to be associated with vascular diseases, including coronary artery disease and diabetic retinopathy. In contrast, haplogroup H, the most frequent haplogroup in Europe, is often found to be more prevalent in healthy control subjects than in patient study groups. However, justifications for the assumption that haplogroups are functionally distinct are rare. Therefore, we attempted to compare differences in mitochondrial function between haplogroup H and T cybrids. METHODOLOGY/PRINCIPAL FINDINGS: Mitochondrial haplogroup H and T cybrids were generated by fusion of HEK293 cells devoid of mitochondrial DNA with isolated thrombocytes of individuals with the respective haplogroups. These cybrid cells were analyzed for oxidative phosphorylation (OXPHOS) enzyme activities, mitochondrial DNA (mtDNA) copy number, growth rate and susceptibility to reactive oxygen species (ROS). We observed that haplogroup T cybrids have higher survival rate when challenged with hydrogen peroxide, indicating a higher capability to cope with oxidative stress. CONCLUSIONS/SIGNIFICANCE: The results of this study show that functional differences exist between HEK293 cybrid cells which differ in mitochondrial genomic background. Public Library of Science 2012-12-26 /pmc/articles/PMC3530588/ /pubmed/23300652 http://dx.doi.org/10.1371/journal.pone.0052367 Text en © 2012 Mueller et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Mueller, Edith E. Brunner, Susanne M. Mayr, Johannes A. Stanger, Olaf Sperl, Wolfgang Kofler, Barbara Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells |
title | Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells |
title_full | Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells |
title_fullStr | Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells |
title_full_unstemmed | Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells |
title_short | Functional Differences between Mitochondrial Haplogroup T and Haplogroup H in HEK293 Cybrid Cells |
title_sort | functional differences between mitochondrial haplogroup t and haplogroup h in hek293 cybrid cells |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3530588/ https://www.ncbi.nlm.nih.gov/pubmed/23300652 http://dx.doi.org/10.1371/journal.pone.0052367 |
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