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Updated: Apr 28, 2026

Comparative Strategies for Ubiquitination Detection in Mammalian Cell Lysates Using SMAD2/SMURF2 as a Model
Published on: April 17, 2026
Bidirectional regulation of the ubiquitin-RNA modification axis in cancer
Kailang Li1,2, Lingling Bao1,2, Bitao Jiang1,2
1Department of Oncology, Beilun Branch of the First Affiliated Hospital, College of Medicine, Zhejiang University, Ningbo, China.
Abstract:
RNA modifications, dynamically regulated by RNA-modifying proteins (RMPs) acting as "writers", "erasers", and "readers", play pivotal roles in governing gene expression and cellular fate. These modifications are also intimately linked to cancer initiation and progression. Dysregulation of RMPs in tumors disrupts RNA modification homeostasis, thereby promoting cancer progression through enhanced proliferation, metastasis, and immune evasion. The ubiquitination system serves as critical regulator of RMP stability and activity, which in turn shapes the cancer epitranscriptome. Conversely, RNA modifications feedback into ubiquitination pathways by modulating the stability and translation of mRNAs encoding ubiquitination-related factors. This bidirectional crosstalk between RMPs and ubiquitination forms a sophisticated regulatory network that enhances cancer adaptability. Notably, emerging therapeutic strategies aimed at targeting RMP ubiquitination have shown promising potential. In this review, we systematically examine the bidirectional regulatory axis between ubiquitination and RMPs in cancer pathogenesis. We first outline how ubiquitination controls RMP activity and the consequent epitranscriptomic alterations and then explore how RNA modifications reciprocally influence ubiquitination pathways. Building on this mechanistic foundation, we evaluate current therapeutic approaches targeting the ubiquitination-epitranscriptome axis and highlight key knowledge gaps in our understanding of this dynamic regulatory network. Finally, we propose future research directions to fully decode the therapeutic potential of this dynamic regulatory network in oncology, thereby providing novel perspectives on cancer development.
Insights
The ubiquitination system and RNA-modifying proteins (RMPs) have a bidirectional relationship that impacts cancer progression. Targeting this RNA modification and ubiquitination crosstalk offers promising therapeutic strategies for cancer treatment.
Area of Science:
- Molecular Biology
- Cancer Research
- Epigenetics
Background:
- RNA modifications, regulated by RNA-modifying proteins (RMPs), are crucial for gene expression and cellular fate, and are linked to cancer.
- Dysregulated RMPs in tumors disrupt RNA modification homeostasis, promoting cancer progression via proliferation, metastasis, and immune evasion.
- The ubiquitination system critically regulates RMP stability and activity, influencing the cancer epitranscriptome.
Purpose of the Study:
- To systematically examine the bidirectional regulatory axis between ubiquitination and RMPs in cancer pathogenesis.
- To explore how ubiquitination controls RMP activity and epitranscriptomic alterations.
- To investigate the reciprocal influence of RNA modifications on ubiquitination pathways.
Main Methods:
- Review of existing literature on the interplay between ubiquitination and RNA modification pathways in cancer.
- Analysis of the mechanisms by which ubiquitination affects RMP function and epitranscriptome.
- Evaluation of how RNA modifications feedback into ubiquitination pathways.
Main Results:
- A bidirectional crosstalk exists between RMPs and ubiquitination, forming a regulatory network that enhances cancer adaptability.
- Ubiquitination controls RMP stability and activity, leading to epitranscriptomic alterations that promote cancer.
- RNA modifications reciprocally influence ubiquitination by modulating the stability and translation of mRNAs encoding ubiquitination factors.
Conclusions:
- Targeting the ubiquitination-epitranscriptome axis presents promising therapeutic strategies for cancer.
- Understanding this dynamic regulatory network is crucial for developing novel oncology treatments.
- Further research is needed to fully decode the therapeutic potential of this crosstalk in cancer development.
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