A comprehensive profile of circulating RNAs in human serum.

Abstract:

:Non-coding RNA (ncRNA) molecules have fundamental roles in cells and many are also stable in body fluids as extracellular RNAs. In this study, we used RNA sequencing (RNA-seq) to investigate the profile of small non-coding RNA (sncRNA) in human serum. We analyzed 10 billion Illumina reads from 477 serum samples, included in the Norwegian population-based Janus Serum Bank (JSB). We found that the core serum RNA repertoire includes 258 micro RNAs (miRNA), 441 piwi-interacting RNAs (piRNA), 411 transfer RNAs (tRNA), 24 small nucleolar RNAs (snoRNA), 125 small nuclear RNAs (snRNA) and 123 miscellaneous RNAs (misc-RNA). We also investigated biological and technical variation in expression, and the results suggest that many RNA molecules identified in serum contain signs of biological variation. They are therefore unlikely to be random degradation by-products. In addition, the presence of specific fragments of tRNA, snoRNA, Vault RNA and Y_RNA indicates protection from degradation. Our results suggest that many circulating RNAs in serum can be potential biomarkers.

journal_name

RNA Biol

journal_title

RNA biology

authors

Umu SU,Langseth H,Bucher-Johannessen C,Fromm B,Keller A,Meese E,Lauritzen M,Leithaug M,Lyle R,Rounge TB

doi

10.1080/15476286.2017.1403003

subject

Has Abstract

pub_date

2018-02-01 00:00:00

pages

242-250

issue

2

eissn

1547-6286

issn

1555-8584

journal_volume

15

pub_type

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