Common gene mutations in 103 authenticated colorectal cancer cell lines

Area of Science:

• Oncology
• Genetics
• Molecular Biology

Background:

• Colorectal cancer (CRC) cell lines are vital preclinical models.
• Cell line molecular features can change over time, necessitating careful selection.
• Accurate cell line models are essential for reliable CRC research.

Purpose of the Study:

• To authenticate commonly used CRC cell lines.
• To characterize the mutation profiles of 20 CRC-relevant genes in these cell lines.
• To provide a resource for selecting appropriate CRC cell line models for functional studies.

Main Methods:

• Authentication of 103 colorectal cancer cell lines.
• Sequencing of 20 CRC-relevant genes with high-depth coverage.
• Analysis of mutation profiles, including pathogenicity, variant allele frequencies, and mutation distribution.

Main Results:

• Cell lines accurately reflected distinct mutation patterns of microsatellite instability and POLE mutations.
• Hypermutated cell lines showed greater divergence and subclonal mutations.
• Identified specific cell lines representing aggressive CRC subtypes based on co-occurring mutations (e.g., BRAF/APC, APC/TP53/RAS).

Conclusions:

• This study provides a valuable resource for selecting CRC cell lines based on molecular profiles.
• Authenticated cell line data aids in understanding CRC heterogeneity.
• The findings facilitate more precise preclinical investigations in colorectal cancer research.