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Updated: Jan 13, 2026

Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
Published on: June 24, 2021
Stage-Specific Alternative Polyadenylation During Human Neural Differentiation Revealed by Integrated Long- and
Zheqi Lou1, Xianyan Zeng1,2, Tinghui Jiang1
1College of Basic Medicine, Chongqing Medical University, Chongqing 400016, China.
This study reveals novel insights into alternative polyadenylation (APA) during human embryonic stem cell (hESC) neural differentiation. The research identifies thousands of new transcripts and poly(A) sites, enhancing our understanding of cell-fate regulation.
Area of Science:
- * Molecular Biology
- * Genomics
- * Developmental Biology
Background:
- * Alternative polyadenylation (APA) is crucial in human embryonic stem cell (hESC) neural differentiation.
- * Previous studies using short-read sequencing provided limited insights into APA complexity and regulation.
Purpose of the Study:
- * To systematically map the APA landscape during early hESC neural differentiation.
- * To characterize dynamic APA patterns and identify key regulatory targets.
Main Methods:
- * Integrated Oxford Nanopore (ONT) long-read sequencing with Illumina short-read sequencing.
- * Analyzed transcriptomic complexity and poly(A) site usage during differentiation.
Main Results:
- * Identified 20,823 novel transcripts and 8,241 unannotated poly(A) sites (PASs).
- * Characterized dynamic 3' UTR-APA patterns and pinpointed SOX11 as a key APA-regulated target.
- * Observed stage-specific intronic APA in neural progenitor cells (NPCs), exemplified by SLC1A3, and identified high-confidence exon APA events.
Conclusions:
- * Substantially expanded the catalog of PASs during human neural differentiation.
- * Provided new insights into APA-mediated post-transcriptional regulation in cell-fate decisions.
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