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Magenheim J, Rokach A, Peretz A, Loyfer N, Cann G, Amini H, Moradi P, Nagaraju S, Sameer W, Cohen A, Fogel O, Kuint R, Abutbul A, Abu Rmeileh A, Karameh M, Cohen Goichman P, Wald O, Korach A, Neiman D, Fox-Fisher I, Moss J, Cohen D, Piyanzin S, Ben Ami R, Quteineh A, Golomb E, Shemer R, Glaser B, Kaplan T, Fridlender Z, Dor Y. Universal lung epithelium DNA methylation markers for detection of lung damage in liquid biopsies. Eur Respir J 2022; 60:13993003.03056-2021. [PMID: 35450968 DOI: 10.1183/13993003.03056-2021] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 03/15/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND Circulating biomarkers for lung damage are lacking. Lung epithelium-specific DNA methylation patterns can potentially report the presence of lung-derived cell-free DNA (cfDNA) in blood, as an indication of lung cell death. METHODS We sorted human lung alveolar and bronchial epithelial cells from surgical specimens, and obtained their methylomes using whole-genome bisulfite sequencing. We developed a PCR-sequencing assay determining the methylation status of 17 loci with lung-specific methylation patterns, and used it to assess lung-derived cfDNA in the plasma of healthy volunteers and patients with lung disease. RESULTS Loci that are uniquely unmethylated in alveolar or bronchial epithelial cells are enriched for enhancers controlling lung-specific genes. Methylation markers extracted from these methylomes revealed that normal lung cell turnover likely releases cfDNA into the air spaces, rather than to blood. People with advanced lung cancer show a massive elevation of lung cfDNA concentration in blood. Among individuals undergoing bronchoscopy, lung-derived cfDNA is observed in the plasma of those later diagnosed with lung cancer, and to a lesser extent in those diagnosed with other lung diseases. Lung cfDNA is also elevated in patients with acute exacerbation of chronic obstructive pulmonary disease (COPD) compared with patients with stable disease, and is associated with future exacerbation and mortality in these patients. CONCLUSIONS Universal cfDNA methylation markers of normal lung epithelium allow for mutation-independent, sensitive and specific detection of lung-derived cfDNA, reporting on ongoing lung injury. Such markers can find broad utility in the study of normal and pathologic human lung dynamics.
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Affiliation(s)
- Judith Magenheim
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel.,Equal contributors
| | - Ariel Rokach
- Pulmonary Institute, Shaare Zedek Medical Center, Jerusalem and the Faculty of Medicine, Hebrew University of Jerusalem, Israel.,Equal contributors
| | - Ayelet Peretz
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Netanel Loyfer
- School of Computer Science and Engineering, The Hebrew University of Jerusalem, Israel
| | - Gordon Cann
- GRAIL LLC, Menlo Park, California, United States of America
| | - Hamed Amini
- GRAIL LLC, Menlo Park, California, United States of America
| | - Patriss Moradi
- GRAIL LLC, Menlo Park, California, United States of America
| | | | - Wafa Sameer
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Asaf Cohen
- Pulmonary Institute, Shaare Zedek Medical Center, Jerusalem and the Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Ophir Fogel
- Pulmonary Institute, Shaare Zedek Medical Center, Jerusalem and the Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Rottem Kuint
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Avraham Abutbul
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Aiman Abu Rmeileh
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Mutaz Karameh
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Polina Cohen Goichman
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Ori Wald
- Dept. of Cardiothoracic Surgery, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Amit Korach
- Dept. of Cardiothoracic Surgery, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Daniel Neiman
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Ilana Fox-Fisher
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Joshua Moss
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Daniel Cohen
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Sheina Piyanzin
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Roni Ben Ami
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Ahmad Quteineh
- The Institute of Pediatric Gastroenterology and Nutrition, Shaare Zedek Medical Center, Israel
| | - Eliahu Golomb
- Dept. of Pathology, Shaare Zedek Medical Center, Hebrew University of Jerusalem, Israel
| | - Ruth Shemer
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Benjamin Glaser
- Dept. of Endocrinology and Metabolism, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Tommy Kaplan
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel.,School of Computer Science and Engineering, The Hebrew University of Jerusalem, Israel
| | - Zvi Fridlender
- Institute of Pulmonary Medicine, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
| | - Yuval Dor
- Dept. of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical Center and Faculty of Medicine, Hebrew University of Jerusalem, Israel
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Ami RB, Barshtein G, Zeltser D, Goldberg Y, Shapira I, Roth A, Keren G, Miller H, Prochorov V, Eldor A, Berliner S, Yedgar S. Parameters of red blood cell aggregation as correlates of the inflammatory state. Am J Physiol Heart Circ Physiol 2001; 280:H1982-8. [PMID: 11299197 DOI: 10.1152/ajpheart.2001.280.5.h1982] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
To identify clinically relevant parameters of red blood cell (RBC) aggregation, we examined correlations of aggregation parameters with C-reactive protein and fibrinogen in unstable angina (UA), acute myocardial infarction (AMI), and bacterial infection (BI). Aggregation parameters were derived from the distribution of RBC population into aggregate sizes (cells per aggregate) and changing of the distribution by flow-derived shear stress. Increased aggregation was observed in the following order: UA, AMI, and BI. The best correlation was obtained by integration of large aggregate fraction as a function of shear stress. To differentiate plasmatic from cellular factors in RBC aggregation, we determined the aggregation in the presence and absence of plasma and formulated a "plasma factor" (PF) ranging from 0 to 1. In AMI the enhanced aggregation was entirely due to PF (PF = 1), whereas in UA and BI it was due to both plasmatic and cellular factors (0 < or = PF < or = 1). It is proposed that clinically relevant parameters of RBC aggregation should express both RBC aggregate size distribution and aggregate resistance to disaggregation and distinguish between plasmatic and cellular factors.
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Affiliation(s)
- R B Ami
- Department of Internal Medicine, Sourasky Medical Center, 64239 Tel-Aviv, Israel
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