Methods of microRNA quantification in urinary sediment.

Area of Science:

• Biochemistry
• Molecular Biology
• Urology

Background:

• Circulating microRNAs (miRNAs) are recognized as promising biomarkers for various diseases.
• Research into urinary miRNAs is an emerging field with significant diagnostic potential.
• Preliminary studies suggest a link between urinary miRNA levels and lupus nephritis.

Purpose of the Study:

• To provide detailed methodologies for measuring miRNA levels in urinary supernatant.
• To cover methods for analyzing miRNAs both within and outside of microvesicles.
• To offer practical guidance, including potential challenges and solutions, for researchers.

Main Methods:

• Sample preparation techniques for urinary specimens.
• Isolation and purification of microvesicles from urine.
• Quantification assays for specific miRNA targets.

Main Results:

• Elaboration of detailed experimental protocols for each step.
• Inclusion of troubleshooting advice for common experimental problems.
• Establishment of a reproducible workflow for urinary miRNA analysis.

Conclusions:

• Standardized methods are essential for advancing urinary miRNA biomarker research.
• Accurate measurement of urinary miRNAs can aid in the diagnosis and monitoring of diseases like lupus nephritis.
• This chapter serves as a foundational resource for researchers in the field of urinary exosomal and non-exosomal miRNAs.