Abstract:
BACKGROUND:Aging is a complex phenomenon and characterized by a progressive decline in physiology and function of adult tissues. However, it hasn't been well established of the correlation between aging and global DNA methylation and hydroxymethylation that regulate the growth and development of higher organisms. RESULTS:We developed an on-line trapping/capillary hydrophilic-interaction liquid chromatography/electrospray ionization-mass spectrometry method for ultra-sensitive and simultaneous quantification of 5-methylcytosine (5-mC) and 5-hydroxymethylcytosine (5-hmC) in genomic DNA from human blood. Limits of detection for 5-mC and 5-hmC were 0.04 and 0.13 fmol, respectively. The imprecision and recovery of the method were determined with the relative standard deviations (RSDs) and relative errors being <11.2 and 14.0 %, respectively. We analyzed the contents of 5-mC and 5-hmC in genomic DNA of blood from 238 healthy people aged from 1 to 82 years. The results showed that 5-hmC content was significantly decreased and highly correlated with aging process, while 5-mC only showed slight correlation with age. We then established a DNA hydroxymethylation age model according to 5-hmC content with a mean absolute deviation (MAD) of approximate 8.9 years. We also calculated the mean relative error (MRE) using the predicted ages based on the age model and the chronological ages. The results showed that the MRE was 18.3 % for samples with ages from 20 to 82 years (95 % confidence interval, N = 190). CONCLUSIONS:The global DNA hydroxymethylation represents a strong and reproducible mark of chronological age, which could be potentially applied in health assessment and prevention of diseases. The identification of biological or environmental factors that influence DNA hydroxymethylation aging rate may permit quantitative assessments of their impacts on health.
journal_name
Clin Epigeneticsjournal_title
Clinical epigeneticsauthors
Xiong J,Jiang HP,Peng CY,Deng QY,Lan MD,Zeng H,Zheng F,Feng YQ,Yuan BFdoi
10.1186/s13148-015-0109-xsubject
Has Abstractpub_date
2015-07-23 00:00:00pages
72eissn
1868-7075issn
1868-7083pii
109journal_volume
7pub_type
杂志文章abstract:BACKGROUND:The birth weight of Black neonates in the United States is consistently smaller than that of their White counterparts. Epigenetic differences between the races may be involved in such disparities. The goal of these analyses was to model the role of IGF1 methylation in mediating the association between race a...
journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-015-0080-6
更新日期:2015-04-21 00:00:00
abstract::Lymphocytes from the peripheral blood of patients with prostate cancer-the most frequent (noncutaneous) tumor in men-display epigenetic aberrations (altered modes of allelic replication) characteristic of the malignant phenotype. The present study aims to determine whether replication aberrations add certainty to the ...
journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1007/s13148-011-0029-3
更新日期:2011-08-01 00:00:00
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pub_type: 杂志文章
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-020-00997-0
更新日期:2021-01-25 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-016-0172-y
更新日期:2016-01-20 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0592-y
更新日期:2018-12-12 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0530-z
更新日期:2018-07-18 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-019-0784-0
更新日期:2019-12-10 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-019-0794-y
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0567-z
更新日期:2018-10-24 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-016-0177-6
更新日期:2016-01-28 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-019-0646-9
更新日期:2019-03-11 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-016-0185-6
更新日期:2016-02-19 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0576-y
更新日期:2018-11-16 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0599-4
更新日期:2019-02-11 00:00:00
abstract::[This corrects the article DOI: 10.1186/s13148-016-0190-9.]. ...
journal_title:Clinical epigenetics
pub_type: 已发布勘误
doi:10.1186/s13148-016-0250-1
更新日期:2016-08-04 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-015-0073-5
更新日期:2015-04-02 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-015-0076-2
更新日期:2015-04-10 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-014-0032-6
更新日期:2014-12-13 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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更新日期:2020-03-02 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-020-0824-9
更新日期:2020-02-19 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-017-0432-5
更新日期:2017-12-20 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-015-0069-1
更新日期:2015-03-28 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/1868-7083-5-19
更新日期:2013-10-11 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
doi:10.1186/s13148-018-0523-y
更新日期:2018-07-05 00:00:00
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journal_title:Clinical epigenetics
pub_type: 杂志文章
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更新日期:2015-02-27 00:00:00