UPDATED MAGNETIC BEAD-BASED mRNA PURIFICATION FOR RNA SEQUENCING APPLICATIONS

NEXTFLEX® Poly(A) Beads 2.0

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For research use only. Not for use in diagnostic procedures.

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NEW! The NEXTFLEX® Poly(A) Beads 2.0 Kit Offer a Streamlined Solution for High mRNA Recovery

The NEXTFLEX® Poly(A) Beads 2.0 kit provides improved mRNA yields, lower rRNA contamination, and a more simplified protocol. The kit offers a convenient method for the purification of pure, intact mRNA upstream of RNA-Seq library prep. Poly(A)-tailed mRNA is isolated via magnetic beads conjugated to oligo(dT), and separation using a magnetic stand allows for high mRNA recovery. The intact mRNA is eluted in small volumes, thereby eliminating the need for precipitation. These beads have been validated with the new and improved NEXTFLEX® Rapid Directional RNA-Seq Kit 2.0.

NEXTFLEX® Poly(A) Beads 2.0 for Reducing Ribosomal rRNA Reads in RNA-seq Libraries 

Several approaches have been used to remove ribosomal RNA (rRNA) from total RNA samples for RNA-Seq library preparation. Removal of rRNA avoids the waste of reagents and bioinformatics resources to sequence and align ~85% of total RNA comprising rRNA (which is generally not a target of interest in NGS sequencing experiments). PerkinElmer’s NEXTFLEX® Poly(A) beads 2.0 kit offers an easy and cost-effective method for removing rRNA in RNA-Seq libraries. This product takes advantage of the tract of adenosine residues present at the 3’ ends of a vast majority of protein-coding mRNAs. Hybridization of these poly(A) tails to tracts of complementary thymidines (“oligo dT”) immobilized on solid supports allows the retrieval of poly(A)+ RNAs by recovering the solid support along with the hybridized RNA complexes.

Figure 1.Example of 1 µg of Universal Human Reference RNA (Agilent® # 740000) after Poly(A) enrichment using the NEXTFLEX® Poly(A) Beads 2.0.  3 µL Poly(A) enriched RNA was run on the LabChip® GXII Touch™ HT instrument using the RNA Pico Assay Reagent Kit (# CLS960012) and a DNA/RNA/Charge Variant Assay LabChip (# 760435)

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(A) mouse brain

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(B) MCF7 cells

Figure 2. NEXTFLEX® Poly(A) Beads 2.0 yield clean mRNA with minimal rRNA carry-over from 5 µg of total RNA input from (A) mouse brain and (B) MCF7 cells. ~1.5% rRNA carry-over was observed based on sequencing data.

See data tab below for performance of poly(A)-enriched libraries using the NEXTFLEX® Rapid Directional RNA-Seq kit 2.0 kit and NEXTFLEX® Poly(A) Beads 2.0 kit.

For total RNA-Seq solution not limited to only mRNA-Seq, PerkinElmer® offers the NEXTFLEX® RiboNaut™ rRNA depletion kit (Human / Mouse / Rat) (link)  for use NEXTFLEX® Rapid Directional RNA-Seq Kit 2.0 (link) or other applications.

NEXTFLEX® POLY(A) BEADS KIT 2.0 CONTENTS

  • NEXTFLEX® Poly(A) Beads 2.0
  • NEXTFLEX® Poly(A) Elution Buffer 2.0
  • NEXTFLEX® Poly(A) Binding Buffer 2.0
  • NEXTFLEX® Poly(A) Washing Buffer 2.0

REQUIRED MATERIALS NOT PROVIDED

  • 10 ng -5 μg total RNA
  • DynaMag™-2 Magnet (Life Technologies Cat # 123-21D) / or / similar
  • Water bath / Heat blocks
  • Tube Rotator-unit (VWR Cat # 13916-822) / or / similar
  • 2, 10, 20, 200 and 1000 μL pipettes
  • RNase-free pipette tips
  • Nuclease-free test tubes and microcentrifuge tubes
  • Microcentrifuge
  • Vortex
The NEXTFLEX® Poly(A) Beads 2.0 kit contains enough material to extract mRNA from 8, 48 or 96 total RNA samples for subsequent RNA-seq library prep or other applications. The kit ships with a minimum viable shelf life of at least six months. All components can be safely stored at 4°C.