Liquid biopsies: DNA methylation analyses in circulating cell-free DNA

Area of Science:

• Biochemistry
• Molecular Biology
• Genomics

Background:

• Liquid biopsies analyze patient samples like blood for diagnostic insights.
• Circulating cell-free DNA (cfDNA) is a key biomarker in liquid biopsies.
• DNA methylation, an epigenetic marker, influences gene expression and is altered in cancer.

Purpose of the Study:

• To review the applications of cfDNA methylation and its derivatives as biomarkers.
• To explore cfDNA methylation in cancer diagnosis, prenatal testing, and organ transplant monitoring.
• To provide an overview of next-generation sequencing technologies for cfDNA methylation analysis.

Main Methods:

• Literature review of studies on cfDNA methylation.
• Analysis of investigational applications in various diagnostic fields.
• Summary of next-generation sequencing (NGS) technologies.

Main Results:

• cfDNA methylation is a promising biomarker for early cancer detection.
• Abnormal DNA methylation patterns are hallmarks of many cancers.
• cfDNA methylation analysis aids in cancer diagnosis, prenatal screening, and transplant monitoring.

Conclusions:

• cfDNA methylation analysis offers a noninvasive approach for disease detection.
• This epigenetic marker holds significant potential for personalized medicine.
• Advancements in NGS technologies enhance the utility of cfDNA methylation biomarkers.