MRNA Stability

Summary This methods chapter describes a protocol for transcriptome-wide measurement of differential poly(A) tail lengths using nanopore direct RNA sequencing, combined with linear mixed models for statistical analysis. The approach enables quantitative comparison of poly(A) tail dynamics across conditions and provides a framework for studying the role of deadenylation in post-transcriptional gene regulation.

Summary This study discovers ribothrypsis, a previously unknown mRNA decay process in which ribosomes trigger endonucleolytic cleavage of mRNAs in a ribosome-phased pattern. Ribothrypsis operates during active translation and represents a major pathway of canonical mRNA decay in human cells.