The Cancer Editome Atlas: A Resource for Exploratory Analysis of the Adenosine-to-Inosine RNA Editome in Cancer

Area of Science:

• Genomics
• Bioinformatics
• Cancer Research

Background:

• Adenosine-to-inosine RNA editing is increasingly implicated in cancer development.
• The functional roles of most RNA editing events are currently unknown, limiting clinical applications.
• Investigating RNA editing in cancer requires accessible tools to analyze large datasets.

Purpose of the Study:

• To develop a user-friendly bioinformatic resource for exploring the cancer RNA editome.
• To facilitate the investigation of functional consequences of RNA editing in carcinogenesis.
• To aid in the identification of novel therapeutic targets for cancer.

Main Methods:

• Development of The Cancer Editome Atlas (TCEA), a bioinformatic database.
• Characterization of over 192 million RNA editing events across 4.6 million sites.
• Integration of data from ~11,000 cancer samples across 33 cancer types from The Cancer Genome Atlas.
• Inclusion of clinical information and miRNA expression data, including RNA editing-modulated miRNA targeting.

Main Results:

• TCEA provides comprehensive characterization of the cancer RNA editome.
• The resource integrates diverse datasets, including clinical and miRNA information.
• TCEA offers modules for searching, analyzing, and visualizing RNA editing data.

Conclusions:

• TCEA significantly lowers the barrier for cancer researchers to analyze complex RNA editome data.
• This resource provides a foundation for understanding the oncogenic mechanisms of RNA editing.
• TCEA is expected to accelerate the discovery of new therapeutic strategies for cancer.