Poly(A)-ClickSeq

Click-chemistry for next-generation 3'-end sequencing without RNA enrichment or fragmentation

Andrew Routh, Ping Ji, Elizabeth Jaworski, Zheng Xia, Wei Li, Eric Wagner

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The recent emergence of alternative polyadenylation (APA) as an engine driving transcriptomic diversity has stimulated the development of sequencing methodologies designed to assess genomewide polyadenylation events. The goal of these approaches is to enrich, partition, capture and ultimately sequence poly(A) site junctions. However, these methods often require poly(A) enrichment, 3' linker ligation steps, and RNA fragmentation, which can necessitate higher levels of starting RNA, increase experimental error and potentially introduce bias. We recently reported a click-chemistry based method for generating RNAseq libraries called 'Click- Seq'. Here, we adapt this method to direct the cDNA synthesis specifically toward the 3'UTR/poly(A) tail junction of cellular RNA. With this novel approach, we demonstrate sensitive and specific enrichment for poly(A) site junctions without the need for complex sample preparation, fragmentation or purification. Poly(A)-ClickSeq (PAC-seq) is therefore a simple procedure that generates high-quality RNA-seq poly(A) libraries. As a proof-of-principle, we utilized PAC-seq to explore the poly(A) landscape of both human and Drosophila cells in culture and observed outstanding overlap with existing poly(A) databases and also identified previously unannotated poly(A) sites. Moreover, we utilize PAC-seq to quantify and analyze APA events regulated by CFIm25 illustrating how this technology can be harnessed to identify alternatively polyadenylated RNA.

Original languageEnglish (US)
Article numbere112
JournalNucleic Acids Research
Volume45
Issue number12
DOIs
StatePublished - Jul 1 2017

Fingerprint

Click Chemistry
RNA Sequence Analysis
Poly A
Polyadenylation
RNA
Messenger RNA
Libraries
3' Untranslated Regions
Drosophila
Ligation
Complementary DNA
Cell Culture Techniques
Databases
Technology

ASJC Scopus subject areas

  • Genetics

Cite this

Poly(A)-ClickSeq : Click-chemistry for next-generation 3'-end sequencing without RNA enrichment or fragmentation. / Routh, Andrew; Ji, Ping; Jaworski, Elizabeth; Xia, Zheng; Li, Wei; Wagner, Eric.

In: Nucleic Acids Research, Vol. 45, No. 12, e112, 01.07.2017.

Research output: Contribution to journalArticle

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