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Author Spotlight: Exploring the Frontier of mRNA Research with Poly A Tail Analysis Techniques
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Single-Molecule Poly(A) Tail Sequencing (SM-PATseq) Using the PacBio Platform.

James R Iben1, Tianwei Li2, Sandy Mattijssen3

  • 1Molecular Genetics Core, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, USA. ibenjame@nih.gov.

Methods in Molecular Biology (Clifton, N.J.)
|October 12, 2023
PubMed
Summary
This summary is machine-generated.

We developed SM-PATseq, a novel method for sequencing poly(A) tail lengths of the whole transcriptome at nucleotide resolution. This technique enables precise measurement of messenger RNA polyadenylation, crucial for gene expression regulation.

Keywords:
Long read sequencingPoly(A) tailPolyadenylationSM-PATseqSingle-molecule

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Area of Science:

  • Molecular Biology
  • Genomics
  • RNA Biology

Background:

  • Polyadenylation of messenger RNA (mRNA) 3' ends is a critical regulator of mRNA stability and translation.
  • Accurate measurement of poly(A) tail length is essential for understanding gene expression regulation.

Purpose of the Study:

  • To develop and describe a novel single-molecule method for sequencing poly(A) tail lengths across the whole transcriptome.
  • To enable nucleotide-resolution analysis of poly(A) tails using long-read sequencing technology.

Main Methods:

  • Developed the single-molecule poly(A) tail sequencing (SM-PATseq) method.
  • Utilized oligo-dT 3' splint adaptor ligation for first-strand cDNA synthesis, followed by random hexamer priming for second-strand synthesis.
  • Employed long-read sequencing (Pacific Biosciences Sequel platform) for direct cDNA sequencing.

Main Results:

  • SM-PATseq allows for the assay of poly(A) tail lengths of the whole transcriptome at nucleotide resolution.
  • The method can identify non-adenosine bases within the poly(A) tail.
  • Transcript abundance can be quantified, similar to traditional RNA sequencing methods.

Conclusions:

  • SM-PATseq provides a powerful tool for high-resolution analysis of poly(A) tail dynamics.
  • This method facilitates a deeper understanding of the role of polyadenylation in post-transcriptional gene regulation.
  • The described protocol enables generation, sequencing, and primary analysis of poly(A) tail data from total RNA.