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Gai W, Zhou Z, Agbor-Enoh S, Fan X, Lian S, Jiang P, Cheng SH, Wong J, Chan SL, Jang MK, Yang Y, Liang RH, Chan WK, Ma ES, Leung TY, Chiu RW, Valantine H, Chan KA, Lo YD. Applications of genetic-epigenetic tissue mapping for plasma DNA in prenatal testing, transplantation and oncology. eLife 2021; 10:64356. [PMID: 33752803 PMCID: PMC7997656 DOI: 10.7554/elife.64356] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 03/10/2021] [Indexed: 01/02/2023] Open
Abstract
We developed genetic-epigenetic tissue mapping (GETMap) to determine the tissue composition of plasma DNA carrying genetic variants not present in the constitutional genome through comparing their methylation profiles with relevant tissues. We validated this approach by showing that, in pregnant women, circulating DNA carrying fetal-specific alleles was entirely placenta-derived. In lung transplant recipients, we showed that, at 72 hr after transplantation, the lung contributed only a median of 17% to the plasma DNA carrying donor-specific alleles, and hematopoietic cells contributed a median of 78%. In hepatocellular cancer patients, the liver was identified as the predominant source of plasma DNA carrying tumor-specific mutations. In a pregnant woman with lymphoma, plasma DNA molecules carrying cancer mutations and fetal-specific alleles were accurately shown to be derived from the lymphocytes and placenta, respectively. Analysis of tissue origin for plasma DNA carrying genetic variants is potentially useful for noninvasive prenatal testing, transplantation monitoring, and cancer screening.
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Affiliation(s)
- Wanxia Gai
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.,State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - Ze Zhou
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Sean Agbor-Enoh
- Genomic Research Alliance for Transplantation (GRAfT), Bethesda, United States.,Division of Pulmonary and Critical Care Medicine, The Johns Hopkins School of Medicine, Baltimore, United States.,Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, United States
| | - Xiaodan Fan
- Department of Statistics, The Chinese University of Hong Kong, Hong Kong, China
| | - Sheng Lian
- Department of Statistics, The Chinese University of Hong Kong, Hong Kong, China
| | - Peiyong Jiang
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.,State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - Suk Hang Cheng
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - John Wong
- Department of Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Stephen L Chan
- Department of Clinical Oncology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Moon Kyoo Jang
- Genomic Research Alliance for Transplantation (GRAfT), Bethesda, United States.,Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, United States
| | - Yanqin Yang
- Genomic Research Alliance for Transplantation (GRAfT), Bethesda, United States.,Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, United States
| | - Raymond Hs Liang
- Comprehensive Oncology Centre, Hong Kong Sanatorium & Hospital, Hong Kong, China
| | - Wai Kong Chan
- Department of Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, China
| | - Edmond Sk Ma
- Department of Pathology, Hong Kong Sanatorium & Hospital, Hong Kong, China
| | - Tak Y Leung
- Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Rossa Wk Chiu
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China
| | - Hannah Valantine
- Genomic Research Alliance for Transplantation (GRAfT), Bethesda, United States.,Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, United States
| | - Kc Allen Chan
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.,State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - Ym Dennis Lo
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China.,Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong, China.,State Key Laboratory of Translational Oncology, The Chinese University of Hong Kong, Hong Kong, China
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