Circulating microRNA-197-3p as a potential biomarker for asbestos exposure.

Area of Science:

• Biomarkers
• Occupational Health
• Molecular Diagnostics

Background:

• Asbestos exposure is a significant occupational hazard linked to various diseases.
• Currently, specific biomarkers for asbestos exposure are lacking.
• MicroRNAs (miRNAs) show promise as diagnostic markers in liquid biopsies.

Purpose of the Study:

• To investigate circulating microRNA 197-3p (miR-197-3p) as a potential biomarker for asbestos exposure.
• To compare miR-197-3p levels in serum from asbestos-exposed workers (WEA) and healthy subjects (HS).

Main Methods:

• Serum samples were collected from WEA (n=75) and HS (n=62).
• Circulating miR-197-3p expression was quantified using RT-qPCR and ddPCR.
• miR-197-3p levels were analyzed in relation to asbestos exposure levels.

Main Results:

• miR-197-3p was significantly down-regulated (2.6-fold) in WEA compared to HS (p<0.0001).
• A significant inverse correlation was observed between miR-197-3p expression and cumulative asbestos exposure.
• WEA with high cumulative exposure showed 2.1 times lower miR-197-3p levels than those with low exposure (p<0.0303).

Conclusions:

• Circulating miR-197-3p is a potential novel biomarker for detecting asbestos exposure.
• Down-regulation of miR-197-3p correlates with the extent of asbestos exposure.
• This finding may aid in early diagnosis and monitoring of asbestos-related health risks.