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Updated: Jun 23, 2026
07:50
Genome-Wide Analysis of DNA Methylation in Gastrointestinal Cancer
Published on: September 18, 2020
Cross-Strand Chimeric RNA Signature Predicts Prognosis and Identifies Tumor Immune Microenvironment Associations in
Shuqiang Cheng1,2, Miaomiao Cui3, Xuehui Li1,2
1Center for Clinical Laboratories, The Affiliated Hospital of Guizhou Medical University, Guiyang, China, gmcah.cn.
Human Mutation
|June 22, 2026
Summary
This study reveals cross-strand chimeric RNAs (cscRNAs) as key players in gastric cancer, developing a novel prognostic signature for patient risk stratification and identifying potential links to the tumor immune microenvironment.
Area of Science:
- Oncology
- Genomics
- Molecular Biology
Background:
- Cross-strand chimeric RNAs (cscRNAs) are novel fusion transcripts with unexplored roles in gastric cancer.
- Understanding cscRNA landscape and function is crucial for advancing gastric cancer research.
Purpose of the Study:
- To investigate cscRNA expression patterns and prognostic relevance in gastric cancer.
- To explore associations between cscRNAs and the tumor immune microenvironment.
- To experimentally validate the functional role of a specific cscRNA in gastric cancer.
Main Methods:
- Integrated computational analysis of TCGA-STAD and GSE122401 datasets.
- Machine learning pipeline for prognostic signature development.
- Experimental validation including knockdown and polyribosome profiling.
Main Results:
- Identified tumor-specific cscRNA enrichment and a reproducible six-region prognostic signature.
- The cscRNA signature accurately stratified patients by survival outcomes.
- High-risk tumors exhibited an immunosuppressive microenvironment; cscR-819 knockdown inhibited cancer cell growth and promoted apoptosis.
Conclusions:
- cscRNAs are functionally relevant in gastric cancer pathogenesis.
- cscRNA-based signatures show promise as biomarkers for risk stratification.
- cscRNAs may influence the tumor immune microenvironment, warranting further investigation.
