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| Content Provider | frontiers |
|---|---|
| Author | Alsop, Eric Meechoovet, Bessie Kitchen, Robert Sweeney, Thadryan Beach, Thomas G. Serrano, Geidy E. Hutchins, Elizabeth Ghiran, Ionita Reiman, Rebecca Syring, Michael Hsieh, Michael Courtright-Lim, Amanda Valkov, Nedyalka Whitsett, Timothy G. Rakela, Jorge Pockros, Paul Rozowsky, Joel Gallego, Juan Huentelman, Matthew J. Shah, Ravi Nakaji, Peter Kalani, M. Yashar S. Laurent, Louise Das, Saumya Van Keuren-Jensen, Kendall |
| Abstract | One promising goal for utilizing the molecular information circulating in biofluids is the discovery of clinically useful biomarkers. Extracellular RNAs (exRNAs) are one of the most diverse classes of molecular cargo, easily assayed by sequencing and with expressions that rapidly change in response to subject status. Despite diverse exRNA cargo, most evaluations from biofluids have focused on small RNA sequencing and analysis, specifically on microRNAs (miRNAs). Another goal of characterizing circulating molecular information, is to correlate expression to injuries associated with specific tissues of origin. Biomarker candidates are often described as being specific, enriched in a particular tissue or associated with a disease process. Likewise, miRNA data is often reported to be specific, enriched for a tissue, without rigorous testing to support the claim. Here we provide a tissue atlas of small RNAs from 30 different tissues and three different blood cell types. We analyzed the tissues for enrichment of small RNA sequences and assessed their expression in biofluids: plasma, cerebrospinal fluid, urine, and saliva. We employed published data sets representing physiological (resting vs. acute exercise) and pathologic states (early- vs. late-stage liver fibrosis, and differential subtypes of stroke) to determine differential tissue-enriched small RNAs. We also developed an online tool that provides information about exRNA sequences found in different biofluids and tissues. The data can be used to better understand the various types of small RNA sequences in different tissues as well as their potential release into biofluids, which should help in the validation or design of biomarker studies. |
| ISSN | 2296634X |
| DOI | 10.3389/fcell.2022.804164 |
| Volume Number | 10 |
| Journal | Frontiers in Cell and Developmental Biology |
| Language | English |
| Publisher Date | 2022-03-04 |
| Access Restriction | Open |
| Subject Keyword | Saliva MicroRNA Plasma Small RNA Urine Extracellular vesicle (EV) Biomarker Extracellular RNA (exRNA) Cerebrospinal fluid (CSF) Tissue atlas |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Developmental Biology |
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