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Updated: Feb 14, 2026
Measurement of Differentially Methylated INS DNA Species in Human Serum Samples as a Biomarker of Islet β Cell Death
Published on: December 21, 2016
Differentially methylated circulating DNA: A novel biomarker to monitor beta cell death
Yingfeng Liu1, Qiyuan Tan1, Fang Liu1
1Shanghai Key Laboratory of Diabetes, Shanghai Clinical Medical Center of Diabetes, Shanghai Key Clinical Center of Metabolic Diseases, Shanghai Institute for Diabetes, Department of Endocrinology & Metabolism, Shanghai Jiao-Tong University Affiliated Sixth People's Hospital, Shanghai, China.
Abstract:
Diabetes mellitus (DM) is a metabolic disorder of glucose homeostasis caused by insufficient secretion or inadequate action of insulin. Nowadays, the increased morbidity of DM is a worldwide issue. Pancreatic beta cell death plays a key role in the progress of DM, especially Type 1 diabetes (T1D). Traditional biomarkers, such as C-peptide and islet autoimmune antibodies are limited to reflect beta cell death and to identify high risk patients in the clinical practice. Recently, a novel biomarker, differentially methylated circulating DNA, has become a research hotspot. It has better sensitivity and specificity in the detection of beta cell death. Assays of beta cell-derived differentially methylated insulin DNA in serum are helpful to predict the possibility to develop T1D in the high risk population. They have also been applied to evaluate beta cell death in Type 2 diabetes (T2D), gestational diabetes mellitus (GDM), islet transplantation and islet specific immune therapy. Although more studies are needed to identify the best methylation target sites in the INS gene, differentially methylated circulating DNA may be a good method to evaluate the progression and prognosis of islet related diseases in the future.
Insights
Differentially methylated circulating DNA shows promise as a sensitive biomarker for detecting pancreatic beta cell death in diabetes. This novel approach aids in predicting Type 1 diabetes risk and monitoring various islet-related conditions.
Area of Science:
- Endocrinology
- Molecular Biology
- Genetics
Background:
- Diabetes mellitus (DM) involves impaired glucose homeostasis due to insulin issues.
- Pancreatic beta cell death is critical in DM progression, particularly Type 1 diabetes (T1D).
- Current biomarkers for beta cell death have limitations in clinical practice.
Purpose of the Study:
- To explore the potential of differentially methylated circulating DNA as a novel biomarker for beta cell death.
- To assess the utility of serum beta cell-derived methylated insulin DNA in predicting T1D risk.
- To evaluate the application of this biomarker in various diabetes types and islet-related therapies.
Main Methods:
- Analysis of differentially methylated circulating DNA, specifically in the INS gene.
- Serum assays to detect beta cell-derived methylated insulin DNA.
- Evaluation of biomarker sensitivity and specificity for beta cell death detection.
Main Results:
- Differentially methylated circulating DNA demonstrates high sensitivity and specificity for detecting beta cell death.
- Serum methylated insulin DNA assays can predict T1D development in high-risk individuals.
- The biomarker is applicable to Type 2 diabetes, gestational diabetes, and post-islet transplantation.
Conclusions:
- Differentially methylated circulating DNA is a promising biomarker for beta cell death.
- This method offers improved detection and monitoring capabilities for diabetes and related conditions.
- Further research is needed to optimize methylation target sites for future clinical applications.
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