Circulating microRNA signatures for echinococcosis.

Area of Science:

• Parasitology
• Molecular Biology
• Biomarker Discovery

Background:

• Echinococcosis is a serious zoonotic parasitic disease with a long latent period.
• Accurate diagnosis is crucial for effective patient management and treatment.
• Identifying reliable diagnostic markers for echinococcosis is essential.

Purpose of the Study:

• To identify robust diagnostic signatures for echinococcosis.
• To profile Argonaute 2-binding microRNAs (abmiRNAs) in infected hosts.
• To develop and validate diagnostic assays based on these abmiRNAs.

Main Methods:

• Co-immunoprecipitation and RNA sequencing (RNA-seq) were used to profile abmiRNAs in mouse hepatocytes.
• Quantitative PCR (qPCR) assays were developed based on circulating liver-specific abmiRNAs.
• Assays were validated using serum samples from infected mice and humans.

Main Results:

• Three liver-specific abmiRNAs (miR-192-5p, miR-122-5p, miR-21a-5p) were identified.
• Circulating abmiRNAs were significantly downregulated during infection and upregulated after treatment.
• qPCR assays demonstrated high sensitivity and specificity in distinguishing infections, with miR-192-5p and miR-122-5p combination being particularly effective.

Conclusions:

• Circulating miR-192-5p and miR-122-5p serve as serum biomarkers for echinococcosis diagnosis.
• These miRNAs can aid in the prognostic management of the disease.
• The identified biomarkers show potential for non-invasive diagnosis and monitoring of treatment response.