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Circulating microRNA as a diagnostic marker in populations with type 2 diabetes mellitus and diabetic complications
Hung-Yu Chien1, Tai-Ping Lee2, Chang-Yi Chen3
1Department of Endocrinology and Metabolism, Taipei City Hospital, Ren-Ai Branch, Taipei, Taiwan, ROC.
Abstract:
Diabetes mellitus (DM) is a global health care issue resulting from hyperglycemia-mediated life-threatening complications. Although the use of glucose-lowering agents is routinely practiced, high dependence on medication leads to poor quality of life for DM patients. While it is still not feasible to precisely determine the critical timing when DM is truly established, perhaps the best way to reduce DM-associated mortality is to prevent it. To this end, an exploration of prognostic molecules sensitive enough to detect early physiological alteration at the initiating stage would be required. Recently discovered small noncoding molecules, microRNAs (miRs), in body fluid seem promising to be utilized as a biomarker to monitor DM initiation and progression, as it is believed that expression of circulating miRs reflects disease pathology. Current DM-related miRs were often referred to miRs differentially expressed in insulin target organs (liver, muscle, and adipose tissues) or circulating blood (peripheral blood) in diabetic patients compared to their control counterparts, although these miRs could merely be resultant nucleotides from DM-induced organ impairment instead of the indicators of onset/progression of DM. In the current review, studies showing circulating miRs associated with type 2 DM and its complications are summarized, and future scope of using miRs as biomarkers for disease prognosis/diagnosis is also emphasized.
Insights
Preventing diabetes mellitus (DM) is crucial. Circulating microRNAs (miRs) show promise as early biomarkers for detecting DM initiation and progression, potentially improving patient outcomes and reducing mortality.
Area of Science:
- Biochemistry
- Molecular Biology
- Endocrinology
Background:
- Diabetes mellitus (DM) presents a global health challenge due to hyperglycemia-induced complications.
- Current treatments rely heavily on glucose-lowering agents, impacting patient quality of life.
- Early detection and prevention are key to reducing DM-associated mortality.
Purpose of the Study:
- To review current literature on circulating microRNAs (miRs) associated with type 2 DM and its complications.
- To explore the potential of miRs as early diagnostic and prognostic biomarkers for DM.
- To emphasize the future scope of utilizing miRs in DM management.
Main Methods:
- Systematic review of studies investigating circulating miRs in type 2 DM patients versus controls.
- Analysis of miRs expression in relation to insulin target organs and peripheral blood.
- Evaluation of miRs as indicators of DM onset, progression, and complications.
Main Results:
- Circulating miRs are differentially expressed in DM patients, reflecting disease pathology.
- Some miRs may be consequences of organ damage rather than early indicators.
- Evidence suggests miRs' potential utility in monitoring DM initiation and progression.
Conclusions:
- Circulating microRNAs (miRs) are promising biomarkers for early detection and monitoring of diabetes mellitus (DM).
- Further research is needed to validate miRs as reliable indicators of DM onset and progression.
- Harnessing miRs could revolutionize DM diagnosis and prognosis, improving patient care.
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MicroRNAs

