Rapid construction of parallel analysis of RNA end (PARE) libraries for Illumina sequencing

Area of Science:

• Plant molecular biology
• RNA biology
• Bioinformatics

Background:

• MicroRNAs (miRNAs) are small RNA molecules crucial for gene regulation, particularly mRNA cleavage in plants.
• Computational prediction of miRNA targets is prone to high false-positive rates, necessitating experimental validation.
• Existing methods for validating miRNA target cleavage exist but can be time-consuming and costly.

Purpose of the Study:

• To develop an updated, faster, and more cost-effective protocol for validating miRNA target cleavage.
• To leverage advancements in high-throughput sequencing for improved miRNA target validation.
• To provide a robust protocol for PARE (Parallel Analysis of cleaved RNA Ends) library construction.

Main Methods:

• Development of a streamlined protocol for PARE library construction starting from total RNA.
• Incorporation of indexed sample pooling for simultaneous sequencing of multiple samples.
• Utilized high-throughput sequencing technology for high-volume data generation.

Main Results:

• The updated protocol significantly reduces library preparation time compared to previous methods.
• Cost reduction is achieved through efficient sample pooling and sequencing strategies.
• The protocol has been successfully applied to validate miRNA targets across various plant species.

Conclusions:

• The developed PARE library construction protocol offers a faster and more economical approach for miRNA target validation in plants.
• This method addresses the critical need for reliable experimental validation of computationally predicted miRNA:mRNA interactions.
• The protocol includes troubleshooting advice to ensure successful implementation in diverse research settings.