Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients
Altered mitochondrial DNA (mtDNA) methylation has been detected in several human pathologies, although little attention has been given to neurodegenerative diseases. Recently, altered methylation levels of the mitochondrial displacement loop (D-loop) region, which regulates mtDNA replication, were o...
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doaj-5f1a522f6cf844788c9e1e789fdda27d2021-05-31T23:46:20ZengMDPI AGGenes2073-44252021-05-011272072010.3390/genes12050720Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease PatientsAndrea Stoccoro0Adam R. Smith1Filippo Baldacci2Claudia Del Gamba3Annalisa Lo Gerfo4Roberto Ceravolo5Katie Lunnon6Lucia Migliore7Fabio Coppedè8Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56126 Pisa, ItalyInstitute of Biomedical and Clinical Sciences, University of Exeter Medical School, University of Exeter, Exeter EX2 5DW, UKDepartment of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, ItalyDepartment of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, ItalyDepartment of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, ItalyDepartment of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, ItalyInstitute of Biomedical and Clinical Sciences, University of Exeter Medical School, University of Exeter, Exeter EX2 5DW, UKDepartment of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56126 Pisa, ItalyDepartment of Translational Research and of New Surgical and Medical Technologies, University of Pisa, 56126 Pisa, ItalyAltered mitochondrial DNA (mtDNA) methylation has been detected in several human pathologies, although little attention has been given to neurodegenerative diseases. Recently, altered methylation levels of the mitochondrial displacement loop (D-loop) region, which regulates mtDNA replication, were observed in peripheral blood cells of Alzheimer’s disease and amyotrophic lateral sclerosis patients. However, nothing is yet known about D-loop region methylation levels in peripheral blood of Parkinson’s disease (PD) patients. In the current study, we investigated D-loop methylation levels and mtDNA copy number in peripheral blood of 30 PD patients and 30 age- and sex-matched control subjects. DNA methylation analyses have been performed by means of methylation-sensitive high-resolution melting (MS-HRM) and pyrosequencing techniques, while mtDNA copy number was analyzed by quantitative PCR. MS-HRM and pyrosequencing analyses provided very similar D-loop methylation levels in PD patients and control subjects, and no differences between the two groups have been observed. Treatment with L-dopa and duration of the disease had no effect on D-loop methylation levels in PD patients. Additionally, mtDNA copy number did not differ between PD patients and control subjects. Current results suggest that D-loop methylation levels are not altered in peripheral blood of PD patients nor influenced by dopaminergic treatment.https://www.mdpi.com/2073-4425/12/5/720MitoepigeneticsDNA methylationD-loop regionParkinson’s disease |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Andrea Stoccoro Adam R. Smith Filippo Baldacci Claudia Del Gamba Annalisa Lo Gerfo Roberto Ceravolo Katie Lunnon Lucia Migliore Fabio Coppedè |
spellingShingle |
Andrea Stoccoro Adam R. Smith Filippo Baldacci Claudia Del Gamba Annalisa Lo Gerfo Roberto Ceravolo Katie Lunnon Lucia Migliore Fabio Coppedè Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients Genes Mitoepigenetics DNA methylation D-loop region Parkinson’s disease |
author_facet |
Andrea Stoccoro Adam R. Smith Filippo Baldacci Claudia Del Gamba Annalisa Lo Gerfo Roberto Ceravolo Katie Lunnon Lucia Migliore Fabio Coppedè |
author_sort |
Andrea Stoccoro |
title |
Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients |
title_short |
Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients |
title_full |
Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients |
title_fullStr |
Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients |
title_full_unstemmed |
Mitochondrial D-Loop Region Methylation and Copy Number in Peripheral Blood DNA of Parkinson’s Disease Patients |
title_sort |
mitochondrial d-loop region methylation and copy number in peripheral blood dna of parkinson’s disease patients |
publisher |
MDPI AG |
series |
Genes |
issn |
2073-4425 |
publishDate |
2021-05-01 |
description |
Altered mitochondrial DNA (mtDNA) methylation has been detected in several human pathologies, although little attention has been given to neurodegenerative diseases. Recently, altered methylation levels of the mitochondrial displacement loop (D-loop) region, which regulates mtDNA replication, were observed in peripheral blood cells of Alzheimer’s disease and amyotrophic lateral sclerosis patients. However, nothing is yet known about D-loop region methylation levels in peripheral blood of Parkinson’s disease (PD) patients. In the current study, we investigated D-loop methylation levels and mtDNA copy number in peripheral blood of 30 PD patients and 30 age- and sex-matched control subjects. DNA methylation analyses have been performed by means of methylation-sensitive high-resolution melting (MS-HRM) and pyrosequencing techniques, while mtDNA copy number was analyzed by quantitative PCR. MS-HRM and pyrosequencing analyses provided very similar D-loop methylation levels in PD patients and control subjects, and no differences between the two groups have been observed. Treatment with L-dopa and duration of the disease had no effect on D-loop methylation levels in PD patients. Additionally, mtDNA copy number did not differ between PD patients and control subjects. Current results suggest that D-loop methylation levels are not altered in peripheral blood of PD patients nor influenced by dopaminergic treatment. |
topic |
Mitoepigenetics DNA methylation D-loop region Parkinson’s disease |
url |
https://www.mdpi.com/2073-4425/12/5/720 |
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