Quantifying the mRNA epitranscriptome reveals epitranscriptome signatures and roles in cancer
Abstract Post-transcriptional modifications on mRNA are crucial for mRNA fate and function. The current lack of a comprehensive method for high-coverage and sensitive quantitative analysis of mRNA modifications significantly limits the discovery of new mRNA modifications and understanding mRNA modif...
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2025-07-01
|
| Series: | Cellular and Molecular Life Sciences |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s00018-025-05805-7 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Abstract Post-transcriptional modifications on mRNA are crucial for mRNA fate and function. The current lack of a comprehensive method for high-coverage and sensitive quantitative analysis of mRNA modifications significantly limits the discovery of new mRNA modifications and understanding mRNA modifications’ occurrence, dynamics and function. Here, a highly sensitive, high-throughput and robust LC-MS/MS-based technique, mRQuant, was developed to simultaneously detect and quantify 84 modified ribonucleosides in cellular mRNA. Using mRQuant, we quantified 32–34 modified ribonucleosides across several human cancer and non-cancer cell lines and uncovered cancer- and cancer type-specific signatures. Analyses of cisplatin- and paclitaxel-treated HeLa cells and drug-resistant variants revealed several drug resistance-associated modifications. Among them, m1A exhibited significant differences across multiple cell types and between cancerous and non-cancerous cells. Knocking down mRNA m1A writer or eraser protein resulted in altered cell viability, cell cycle and apoptosis in HeLa cells, suggesting a role of mRNA m1A in cancer. Transcriptomic and proteomic analyses further revealed the molecular mechanisms underlying the phenotypic variation. |
|---|---|
| ISSN: | 1420-9071 |