Somatic mtDNA mutation spectra in the aging human putamen.
The accumulation of heteroplasmic mitochondrial DNA (mtDNA) deletions and single nucleotide variants (SNVs) is a well-accepted facet of the biology of aging, yet comprehensive mutation spectra have not been described. To address this, we have used next generation sequencing of mtDNA-enriched librari...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2013-01-01
|
| Series: | PLoS Genetics |
| Online Access: | http://europepmc.org/articles/PMC3854840?pdf=render |
| _version_ | 1818038238506385408 |
|---|---|
| author | Siôn L Williams Deborah C Mash Stephan Züchner Carlos T Moraes |
| author_facet | Siôn L Williams Deborah C Mash Stephan Züchner Carlos T Moraes |
| author_sort | Siôn L Williams |
| collection | DOAJ |
| description | The accumulation of heteroplasmic mitochondrial DNA (mtDNA) deletions and single nucleotide variants (SNVs) is a well-accepted facet of the biology of aging, yet comprehensive mutation spectra have not been described. To address this, we have used next generation sequencing of mtDNA-enriched libraries (Mito-Seq) to investigate mtDNA mutation spectra of putamen from young and aged donors. Frequencies of the "common" deletion and other "major arc" deletions were significantly increased in the aged cohort with the fold increase in the frequency of the common deletion exceeding that of major arc deletions. SNVs also increased with age with the highest rate of accumulation in the non-coding control region which contains elements necessary for translation and replication. Examination of predicted amino acid changes revealed a skew towards pathogenic SNVs in the coding region driven by mutation bias. Levels of the pathogenic m.3243A>G tRNA mutation were also found to increase with age. Novel multimeric tandem duplications that resemble murine control region multimers and yeast ρ(-) mtDNAs, were identified in both young and aged specimens. Clonal ∼50 bp deletions in the control region were found at high frequencies in aged specimens. Our results reveal the complex manner in which the mitochondrial genome alters with age and provides a foundation for studies of other tissues and disease states. |
| first_indexed | 2024-12-10T07:39:34Z |
| format | Article |
| id | doaj.art-1162e9f8c3504398986997be6ed5d8f4 |
| institution | Directory Open Access Journal |
| issn | 1553-7390 1553-7404 |
| language | English |
| last_indexed | 2024-12-10T07:39:34Z |
| publishDate | 2013-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Genetics |
| spelling | doaj.art-1162e9f8c3504398986997be6ed5d8f42022-12-22T01:57:20ZengPublic Library of Science (PLoS)PLoS Genetics1553-73901553-74042013-01-01912e100399010.1371/journal.pgen.1003990Somatic mtDNA mutation spectra in the aging human putamen.Siôn L WilliamsDeborah C MashStephan ZüchnerCarlos T MoraesThe accumulation of heteroplasmic mitochondrial DNA (mtDNA) deletions and single nucleotide variants (SNVs) is a well-accepted facet of the biology of aging, yet comprehensive mutation spectra have not been described. To address this, we have used next generation sequencing of mtDNA-enriched libraries (Mito-Seq) to investigate mtDNA mutation spectra of putamen from young and aged donors. Frequencies of the "common" deletion and other "major arc" deletions were significantly increased in the aged cohort with the fold increase in the frequency of the common deletion exceeding that of major arc deletions. SNVs also increased with age with the highest rate of accumulation in the non-coding control region which contains elements necessary for translation and replication. Examination of predicted amino acid changes revealed a skew towards pathogenic SNVs in the coding region driven by mutation bias. Levels of the pathogenic m.3243A>G tRNA mutation were also found to increase with age. Novel multimeric tandem duplications that resemble murine control region multimers and yeast ρ(-) mtDNAs, were identified in both young and aged specimens. Clonal ∼50 bp deletions in the control region were found at high frequencies in aged specimens. Our results reveal the complex manner in which the mitochondrial genome alters with age and provides a foundation for studies of other tissues and disease states.http://europepmc.org/articles/PMC3854840?pdf=render |
| spellingShingle | Siôn L Williams Deborah C Mash Stephan Züchner Carlos T Moraes Somatic mtDNA mutation spectra in the aging human putamen. PLoS Genetics |
| title | Somatic mtDNA mutation spectra in the aging human putamen. |
| title_full | Somatic mtDNA mutation spectra in the aging human putamen. |
| title_fullStr | Somatic mtDNA mutation spectra in the aging human putamen. |
| title_full_unstemmed | Somatic mtDNA mutation spectra in the aging human putamen. |
| title_short | Somatic mtDNA mutation spectra in the aging human putamen. |
| title_sort | somatic mtdna mutation spectra in the aging human putamen |
| url | http://europepmc.org/articles/PMC3854840?pdf=render |
| work_keys_str_mv | AT sionlwilliams somaticmtdnamutationspectraintheaginghumanputamen AT deborahcmash somaticmtdnamutationspectraintheaginghumanputamen AT stephanzuchner somaticmtdnamutationspectraintheaginghumanputamen AT carlostmoraes somaticmtdnamutationspectraintheaginghumanputamen |