Dataset Information
Tumor IsomiR Encyclopedia (TIE): a pan-cancer database of miRNA isoforms.
Ontology highlight
ABSTRACT: Summary
MicroRNAs (miRNAs) are master regulators of gene expression in cancers. Their sequence variants or isoforms (isomiRs) are highly abundant and possess unique functions. Given their short sequence length and high heterogeneity, mapping isomiRs can be challenging; without adequate depth and data aggregation, low frequency events are often disregarded. To address these challenges, we present the Tumor IsomiR Encyclopedia (TIE): a dynamic database of isomiRs from over 10 000 adult and pediatric tumor samples in The Cancer Genome Atlas (TCGA) and The Therapeutically Applicable Research to Generate Effective Treatments (TARGET) projects. A key novelty of TIE is its ability to annotate heterogeneous isomiR sequences and aggregate the variants obtained across all datasets. Results can be browsed online or downloaded as spreadsheets. Here, we show analysis of isomiRs of miR-21 and miR-30a to demonstrate the utility of TIE.Availability and implementation
TIE search engine and data are freely available to use at https://isomir.ccr.cancer.gov/.Supplementary information
Supplementary data are available at Bioinformatics online.
SUBMITTER: Bofill-De Ros X
PROVIDER: S-EPMC8479663 | biostudies-literature | 2021 Sep
REPOSITORIES: biostudies-literature
Publications
Tumor IsomiR Encyclopedia (TIE): a pan-cancer database of miRNA isoforms.
Bioinformatics (Oxford, England) 20210901 18
<h4>Summary</h4>MicroRNAs (miRNAs) are master regulators of gene expression in cancers. Their sequence variants or isoforms (isomiRs) are highly abundant and possess unique functions. Given their short sequence length and high heterogeneity, mapping isomiRs can be challenging; without adequate depth and data aggregation, low frequency events are often disregarded. To address these challenges, we present the Tumor IsomiR Encyclopedia (TIE): a dynamic database of isomiRs from over 10 000 adult and ...[more]