The cell line A-to-I RNA editing catalogue

Area of Science:

• Molecular Biology
• Genetics
• Immunology

Background:

• Adenosine-to-inosine (A-to-I) RNA editing is a key post-transcriptional modification with roles in immunity, disease, and RNA engineering.
• Studying RNA editing in human cell lines is vital, but cell line editing levels often differ from normal tissues, necessitating enzyme overexpression.

Purpose of the Study:

• To investigate the A-to-I RNA editing landscape across a large panel of human cell lines.
• To identify cell lines that accurately reflect normal tissue RNA editing conditions.
• To provide a resource for researchers to select appropriate cell lines for A-to-I RNA editing studies.

Main Methods:

• Analysis of A-to-I RNA editing levels across over 1000 human cell line types.
• Development of CLAIRE, a searchable online catalogue of RNA editing levels in cell lines.

Main Results:

• A suitable cell line mimicking normal tissue conditions was found for almost every A-to-I RNA editing target.
• The CLAIRE catalogue provides a comprehensive resource for selecting cell lines based on RNA editing profiles.

Conclusions:

• Researchers can now rationally select cell lines that better represent physiological RNA editing states.
• This resource will advance research in A-to-I RNA editing, its role in diseases, and its applications in RNA engineering.