Colon Cancer-Related Genes Identification and Function Study Based on Single-Cell Multi-Omics Integration.

Area of Science:

• Oncology
• Genomics
• Epigenetics

Background:

• Colon cancer exhibits significant heterogeneity.
• Understanding molecular differences is crucial for effective treatment strategies.

Purpose of the Study:

• To identify novel marker genes for colon cancer subtypes using single-cell transcriptomics and DNA methylation data.
• To explore the functional implications of these marker genes in tumor development and progression.

Main Methods:

• Single-cell RNA sequencing (scRNA-seq) to analyze gene expression.
• DNA methylation profiling at the single-cell level.
• Differential gene expression analysis and functional enrichment analysis.

Main Results:

• Seven distinct colon cancer subtypes were identified based on scRNA-seq.
• Specific differentially expressed genes, regulated by methylation changes, were identified as subtype-specific markers.
• Upregulated marker genes in tumors showed high specificity compared to normal colon cells.
• Functional analysis suggested links between colon cancer and nervous system diseases, and revealed an impaired immune system in cancer cells.

Conclusions:

• Single-cell molecular profiling can delineate colon cancer subtypes and identify specific biomarkers.
• Dysregulated DNA methylation and gene expression are key drivers of colon cancer heterogeneity and progression.
• These findings may pave the way for subtype-specific diagnostic and therapeutic approaches in colon cancer.