ArticleCell communication and signaling : CCS2024
OTU deubiquitinase, ubiquitin aldehyde binding 2 (OTUB2) modulates the stemness feature, chemoresistance, and epithelial-mesenchymal transition of colon cancer via regulating GINS complex subunit 1 (GINS1) expression.
Article in Cell communication and signaling : CCS, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Cancer-associated fibroblasts-derived exosomal circ_0067557 promotes colorectal cancer epithelial-mesenchymal transition via BHLHE40-mediated transcriptional activation of OTUB2.Biology direct · 2026Article
- KAT5-mediated acetylation enhances the deubiquitination of HASPIN by OTUB2 and promotes breast cancer progression.Cell death & disease · 2026Article
- Role of POLE2/GINS1-mediated AKT/mTOR pathway in RCC autophagy, proliferation, and metastasis: evidences from bioinformatic, clinical, and experimental data.Apoptosis : an international journal on programmed cell death · 2026Article
- Article
- Differential gene expression profiles of pancreatic ductal adenocarcinomas among African American and Caucasian American patients.Translational oncology · 2025Article
- GINS1 facilitates the development of lung adenocarcinoma via Wnt/β-catenin activation.World journal of surgical oncology · 2025Article
- GINS1 is a prognostic biomarker and correlated with methylation and immune escape in liver hepatocellular carcinoma.Frontiers in oncology · 2025Article
- Role of Ubiquitin-regulated EMT in Cancer Metastasis and Chemoresistance.International journal of biological sciences · 2025Review
- Leveraging Xenobiotic-Responsive Cancer Stemness in Cell Line-Based Tumoroids for Evaluating Chemoresistance: A Proof-of-Concept Study on Environmental Susceptibility.International journal of molecular sciences · 2024Article
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Abstract
backgroundColon cancer is one of the most prevalent tumors in the digestive tract, and its stemness feature significantly contribute to chemoresistance, promote the epithelial-mesenchymal transition (EMT) process, and ultimately lead to tumor metastasis. Therefore, it is imperative for researchers to elucidate the molecular mechanisms underlying the enhancement of stemness feature, chemoresistance, and EMT in colon cancer.
methodsSphere-formation and western blotting assays were conducted to assess the stemness feature. Edu, flow cytometry, and cell viability assays were employed to evaluate the chemoresistance. Immunofluorescence and western blotting assays were utilized to detect EMT. Immunoprecipitation, ubiquitination, agarose gel electrophoresis, chromatin immunoprecipitation followed by quantitative PCR (chip-qPCR), and dual luciferase reporter gene assays were employed for mechanistic investigations.
resultsWe demonstrated a markedly higher expression level of OTUB2 in colon cancer tissues compared to adjacent tissues. Furthermore, elevated OTUB2 expression was closely associated with poor prognosis and distant tumor metastasis. Functional experiments revealed that knockdown of OTUB2 attenuated stemness feature of colon cancer, enhanced its sensitivity to oxaliplatin, inhibited its EMT process, ultimately reduced the ability of tumor metastasis. Conversely, overexpression of OTUB2 exerted opposite effects. Mechanistically, we identified OTUB2 as a deubiquitinase for SP1 protein which bound specifically to SP1 protein, thereby inhibiting K48 ubiquitination of SP1 protein. The SP1 protein functioned as a transcription factor for the GINS1, exerting its regulatory effect by binding to the 1822-1830 region of the GINS1 promoter and enhancing its transcriptional activity. Ultimately, alterations in GINS1 expression directly regulated stemness feature, chemosensitivity, and EMT progression in colon cancer.
conclusionCollectively, the OTUB2/SP1/GINS1 axis played a pivotal role in driving stemness feature, chemoresistance, and EMT in colon cancer. These results shed new light on understanding chemoresistance and metastasis mechanisms involved in colon cancer.
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