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DNA Methylation-Based Age Prediction and Telomere Length Reveal an Accelerated Aging in Induced Sputum Cells Compared to Blood Leukocytes: A Pilot Study in COPD Patients
- Source :
- Frontiers in Medicine, Frontiers in Medicine, Vol 8 (2021)
- Publication Year :
- 2021
- Publisher :
- Frontiers Media SA, 2021.
-
Abstract
- Aging is the predominant risk factor for most degenerative diseases, including chronic obstructive pulmonary disease (COPD). This process is however very heterogeneous. Defining the biological aging of individual tissues may contribute to better assess this risky process. In this study, we examined the biological age of induced sputum (IS) cells, and peripheral blood leukocytes in the same subject, and compared these to assess whether biological aging of blood leukocytes mirrors that of IS cells. Biological aging was assessed in 18 COPD patients (72.4 ± 7.7 years; 50% males). We explored mitotic and non-mitotic aging pathways, using telomere length (TL) and DNA methylation-based age prediction (DNAmAge) and age acceleration (AgeAcc) (i.e., difference between DNAmAge and chronological age). Data on demographics, life style and occupational exposure, lung function, and clinical and blood parameters were collected. DNAmAge (67.4 ± 5.80 vs. 61.6 ± 5.40 years; p = 0.0003), AgeAcc (−4.5 ± 5.02 vs. −10.8 ± 3.50 years; p = 0.0003), and TL attrition (1.05 ± 0.35 vs. 1.48 ± 0.21 T/S; p = 0.0341) are higher in IS cells than in blood leukocytes in the same patients. Blood leukocytes DNAmAge (r = 0.927245; p = 0.0026) and AgeAcc (r = 0.916445; p = 0.0037), but not TL, highly correlate with that of IS cells. Multiple regression analysis shows that both blood leukocytes DNAmAge and AgeAcc decrease (i.e., younger) in patients with FEV1% enhancement (p = 0.0254 and p = 0.0296) and combined inhaled corticosteroid (ICS) therapy (p = 0.0494 and p = 0.0553). In conclusion, new findings from our work reveal a differential aging in the context of COPD, by a direct quantitative comparison of cell aging in the airway with that in the more accessible peripheral blood leukocytes, providing additional knowledge which could offer a potential translation into the disease management.
- Subjects :
- 0301 basic medicine
Medicine (General)
medicine.medical_specialty
medicine.drug_class
Context (language use)
Gastroenterology
DNA methylation age
age acceleration
chronic obstructive pulmonary disease
induced sputum
lung aging
telomere length
03 medical and health sciences
R5-920
0302 clinical medicine
Internal medicine
medicine
Risk factor
Original Research
COPD
business.industry
General Medicine
medicine.disease
Accelerated aging
Telomere
030104 developmental biology
030228 respiratory system
DNA methylation
Medicine
Corticosteroid
business
Cell aging
Subjects
Details
- ISSN :
- 2296858X
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Frontiers in Medicine
- Accession number :
- edsair.doi.dedup.....1beefe1238b4907fbb8eee3d0542e5a1
- Full Text :
- https://doi.org/10.3389/fmed.2021.690312