作者: Sung-Joo Hwang , Ji-Won Lee , Jeong-Chan Lee , Min-Koo Park
DOI: 10.1016/J.CLINBIOCHEM.2021.04.021
关键词: DNA methylation 、 Epigenetics 、 Liquid biopsy 、 Cancer research 、 Cancer 、 Alu element 、 Human genome 、 Methylation 、 Real-time polymerase chain reaction 、 Biology
摘要: Abstract Introduction The liquid biopsy approach, a less-invasive diagnostic tool, enables the detection of disease-specific genetic and epigenetic aberrations. Approximately 66–69% human genome may be composed transposable repetitive elements, including Alu LINE-1. This study aimed to investigate whether Alu-derived cell-free DNA (cfDNA) concentrations, index, LINE-1 methylation could used distinguish patients with cancers from healthy individuals. Methods Two sets primers, shorter longer fragments, were amplify followed by quantitation concentration its integrity index. status was then analyzed quantitative PCR using methylation- unmethylation-specific TaqMan probes. Results Both index level significantly different in comparison between lung or breast cancer controls. area under ROC curve hypomethylation 0.742 0.848 for cancer, respectively, 0.724 0.890 respectively. However, fragment correlated hypomethylation. Regression analysis suggested that level, rather than good discriminator cancers. Conclusions investigated genome-wide status; their associations these combinatory panels implemented as triage test discriminate