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Dynabeads mrna kit

Manufactured by Thermo Fisher Scientific

The Dynabeads mRNA kit is a laboratory product designed for the isolation and purification of messenger RNA (mRNA) from biological samples. It utilizes magnetic beads coated with oligo(dT) to selectively capture and separate mRNA molecules from total RNA extracts.

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2 protocols using dynabeads mrna kit

1

Spleen and Lymph Node RNA-Seq

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Spleen and cervical lymph nodes were dissected fresh into RNALater stabilization reagent (Qiagen) and stored at −20 °C. Total RNA was isolated using MagMAX™ Nucleic Acid Isolation Kit (Ambion) per the manufacturer’s instructions. RNA was quantified using UV spectrophotometer, and RNA integrity was evaluated by Qiaxcel (Qiagen). PolyA mRNA was purified from total RNA using Dynabeads mRNA kit (Invitrogen) and strand specific RNA-Seq libraries were prepared with the ScriptSeq RNA-seq Library Preparation kit (Illumina). RNA-Seq libraries were sequenced to a length of 33 bp using Hiseq 2000 NGS sequencer (Illumina). Gene expression levels were derived from raw sequencing reads using Nimbus2, an RNA-Seq analysis pipeline developed in house.
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2

Strand-specific RNA-seq library preparation

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mRNA was prepared using Dynabeads mRNA kit (Invitrogen) and fragmented by heat. For cDNA synthesis, custom oligo-dT primers were used with a barcode and an adapter-linker sequence (CAG ACG TGT GCT CTT CCG ATC T—XXXXXXXX-T15) and with the Affinity Script enzyme (Agilent). After first strand synthesis, samples were pooled together based on ACTB qPCR values. RNA-DNA hybrids was degraded using consecutive acid-alkali treatment. A second sequencing linker (AGA TCG GAA GAG CGT CGT GTAG) was then ligated using T4 ligase (NEB). The mixture was then PCR enriched for 12 cycles and purified to yield final strand specific RNA-seq libraries as previously described55 (link). Libraries were sequenced using a HiSeq 2500 (Illumina) using 50bp × 25bp pair-end sequencing.
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