Optimization of total RNA isolation from human urinary sediment

Area of Science:

• Molecular Biology
• Urology
• Biochemistry

Background:

• RNA extraction from human urinary sediment presents significant challenges due to low cell numbers and a harsh environment.
• Current commercial kits utilizing silica technology often result in low total RNA yield and success rates.

Purpose of the Study:

• To develop a more efficient and cost-effective method for isolating high-quality total RNA from human urinary sediment.
• To compare the efficacy of a Trizol-based protocol against silica-based commercial kits.

Main Methods:

• Replaced column-based silica kits with a guanidine isothiocyanate-phenol-chloroform (Trizol reagent) based protocol.
• Incorporated glycogen as a carrier during RNA precipitation.
• Used isopropanol and sodium acetate for precipitation of total RNA.

Main Results:

• The Trizol-based method demonstrated superior performance compared to silica technology for urinary sediment RNA isolation.
• Achieved higher concentrations of total RNA.
• Obtained RNA of better quality.

Conclusions:

• The Trizol reagent protocol, supplemented with glycogen and isopropanol precipitation, is a more affordable and efficient alternative for urinary sediment total RNA isolation.
• This improved methodology enhances RNA yield and quality, facilitating downstream molecular analyses.