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Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms
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Zeitschriftentitel: | Proceedings of the National Academy of Sciences |
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Personen und Körperschaften: | , , , , , , |
In: | Proceedings of the National Academy of Sciences, 117, 2020, 50, S. 32056-32065 |
Format: | E-Article |
Sprache: | Englisch |
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Proceedings of the National Academy of Sciences
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Schlagwörter: |
author_facet |
Aras, Siddhesh Purandare, Neeraja Gladyck, Stephanie Somayajulu-Nitu, Mallika Zhang, Kezhong Wallace, Douglas C. Grossman, Lawrence I. Aras, Siddhesh Purandare, Neeraja Gladyck, Stephanie Somayajulu-Nitu, Mallika Zhang, Kezhong Wallace, Douglas C. Grossman, Lawrence I. |
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author |
Aras, Siddhesh Purandare, Neeraja Gladyck, Stephanie Somayajulu-Nitu, Mallika Zhang, Kezhong Wallace, Douglas C. Grossman, Lawrence I. |
spellingShingle |
Aras, Siddhesh Purandare, Neeraja Gladyck, Stephanie Somayajulu-Nitu, Mallika Zhang, Kezhong Wallace, Douglas C. Grossman, Lawrence I. Proceedings of the National Academy of Sciences Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms Multidisciplinary |
author_sort |
aras, siddhesh |
spelling |
Aras, Siddhesh Purandare, Neeraja Gladyck, Stephanie Somayajulu-Nitu, Mallika Zhang, Kezhong Wallace, Douglas C. Grossman, Lawrence I. 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.2005877117 <jats:title>Significance</jats:title> <jats:p> Pathogenic mtDNA tRNA mutations, such as the 3243A>G MELAS mutation, generally result in multisystem failure. In cybrids harboring ∼70% 3243G mutant mtDNA, the mitochondrial unfolded protein response (UPR <jats:sup>mt</jats:sup> ) is impaired. Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1, or CHCHD2) is a bi-organellar (mitochondrial and nuclear) protein that is reduced in ∼70% 3243G cybrid cells. Under stress conditions, MNRR1 import into mitochondria is impaired, resulting in its preferential concentration in the nucleus. Increased nuclear MNRR1 induces the UPR <jats:sup>mt</jats:sup> through regulation of the ATF5 transcription factor. Overexpression of MNRR1 in ∼70% 3243G cybrid cells induces the UPR <jats:sup>mt</jats:sup> , autophagy, and mitochondrial biogenesis and restores mitochondrial respiratory function; furthermore, the proportion of wild-type mtDNA increases. Thus, MNRR1 overexpression might be beneficial for mtDNA diseases. </jats:p> Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms Proceedings of the National Academy of Sciences |
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10.1073/pnas.2005877117 |
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Proceedings of the National Academy of Sciences, 2020 |
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Proceedings of the National Academy of Sciences, 2020 |
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title |
Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_unstemmed |
Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_full |
Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_fullStr |
Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_full_unstemmed |
Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_short |
Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_sort |
mitochondrial nuclear retrograde regulator 1 (mnrr1) rescues the cellular phenotype of melas by inducing homeostatic mechanisms |
topic |
Multidisciplinary |
url |
http://dx.doi.org/10.1073/pnas.2005877117 |
publishDate |
2020 |
physical |
32056-32065 |
description |
<jats:title>Significance</jats:title>
<jats:p>
Pathogenic mtDNA tRNA mutations, such as the 3243A>G MELAS mutation, generally result in multisystem failure. In cybrids harboring ∼70% 3243G mutant mtDNA, the mitochondrial unfolded protein response (UPR
<jats:sup>mt</jats:sup>
) is impaired. Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1, or CHCHD2) is a bi-organellar (mitochondrial and nuclear) protein that is reduced in ∼70% 3243G cybrid cells. Under stress conditions, MNRR1 import into mitochondria is impaired, resulting in its preferential concentration in the nucleus. Increased nuclear MNRR1 induces the UPR
<jats:sup>mt</jats:sup>
through regulation of the ATF5 transcription factor. Overexpression of MNRR1 in ∼70% 3243G cybrid cells induces the UPR
<jats:sup>mt</jats:sup>
, autophagy, and mitochondrial biogenesis and restores mitochondrial respiratory function; furthermore, the proportion of wild-type mtDNA increases. Thus, MNRR1 overexpression might be beneficial for mtDNA diseases.
</jats:p> |
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author | Aras, Siddhesh, Purandare, Neeraja, Gladyck, Stephanie, Somayajulu-Nitu, Mallika, Zhang, Kezhong, Wallace, Douglas C., Grossman, Lawrence I. |
author_facet | Aras, Siddhesh, Purandare, Neeraja, Gladyck, Stephanie, Somayajulu-Nitu, Mallika, Zhang, Kezhong, Wallace, Douglas C., Grossman, Lawrence I., Aras, Siddhesh, Purandare, Neeraja, Gladyck, Stephanie, Somayajulu-Nitu, Mallika, Zhang, Kezhong, Wallace, Douglas C., Grossman, Lawrence I. |
author_sort | aras, siddhesh |
container_issue | 50 |
container_start_page | 32056 |
container_title | Proceedings of the National Academy of Sciences |
container_volume | 117 |
description | <jats:title>Significance</jats:title> <jats:p> Pathogenic mtDNA tRNA mutations, such as the 3243A>G MELAS mutation, generally result in multisystem failure. In cybrids harboring ∼70% 3243G mutant mtDNA, the mitochondrial unfolded protein response (UPR <jats:sup>mt</jats:sup> ) is impaired. Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1, or CHCHD2) is a bi-organellar (mitochondrial and nuclear) protein that is reduced in ∼70% 3243G cybrid cells. Under stress conditions, MNRR1 import into mitochondria is impaired, resulting in its preferential concentration in the nucleus. Increased nuclear MNRR1 induces the UPR <jats:sup>mt</jats:sup> through regulation of the ATF5 transcription factor. Overexpression of MNRR1 in ∼70% 3243G cybrid cells induces the UPR <jats:sup>mt</jats:sup> , autophagy, and mitochondrial biogenesis and restores mitochondrial respiratory function; furthermore, the proportion of wild-type mtDNA increases. Thus, MNRR1 overexpression might be beneficial for mtDNA diseases. </jats:p> |
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spelling | Aras, Siddhesh Purandare, Neeraja Gladyck, Stephanie Somayajulu-Nitu, Mallika Zhang, Kezhong Wallace, Douglas C. Grossman, Lawrence I. 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.2005877117 <jats:title>Significance</jats:title> <jats:p> Pathogenic mtDNA tRNA mutations, such as the 3243A>G MELAS mutation, generally result in multisystem failure. In cybrids harboring ∼70% 3243G mutant mtDNA, the mitochondrial unfolded protein response (UPR <jats:sup>mt</jats:sup> ) is impaired. Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1, or CHCHD2) is a bi-organellar (mitochondrial and nuclear) protein that is reduced in ∼70% 3243G cybrid cells. Under stress conditions, MNRR1 import into mitochondria is impaired, resulting in its preferential concentration in the nucleus. Increased nuclear MNRR1 induces the UPR <jats:sup>mt</jats:sup> through regulation of the ATF5 transcription factor. Overexpression of MNRR1 in ∼70% 3243G cybrid cells induces the UPR <jats:sup>mt</jats:sup> , autophagy, and mitochondrial biogenesis and restores mitochondrial respiratory function; furthermore, the proportion of wild-type mtDNA increases. Thus, MNRR1 overexpression might be beneficial for mtDNA diseases. </jats:p> Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms Proceedings of the National Academy of Sciences |
spellingShingle | Aras, Siddhesh, Purandare, Neeraja, Gladyck, Stephanie, Somayajulu-Nitu, Mallika, Zhang, Kezhong, Wallace, Douglas C., Grossman, Lawrence I., Proceedings of the National Academy of Sciences, Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms, Multidisciplinary |
title | Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_full | Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_fullStr | Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_full_unstemmed | Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_short | Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
title_sort | mitochondrial nuclear retrograde regulator 1 (mnrr1) rescues the cellular phenotype of melas by inducing homeostatic mechanisms |
title_unstemmed | Mitochondrial Nuclear Retrograde Regulator 1 (MNRR1) rescues the cellular phenotype of MELAS by inducing homeostatic mechanisms |
topic | Multidisciplinary |
url | http://dx.doi.org/10.1073/pnas.2005877117 |