RUNX3 orchestrates a context specific transcriptional switch with opposite outcomes in gastric cancer metastasis

This repository contains the bioinformatics analysis code used in the study “RUNX3 orchestrates a context-specific transcriptional switch with opposite outcomes in gastric cancer metastasis.” All scripts and pipelines are organized into four top-level folders: • RNAseq_Code: RNA-seq downstream analysis code for metastatic gastric cancer cell lines HGC27 (p53-deficient/LOF), LMSU (TP53 R175H GOF), and NUGC4 (wild-type p53; ARF-defective), including analyses of TGFβ-stimulated conditions and inhibitor-perturbation datasets.

The workflows cover differential expression (DESeq2-based), gene set/pathway analyses (e.g., GSEA/GO), EMT/apoptosis-related scoring, and figure-ready visualizations. • ChIPseq_Code: ChIP-seq analysis code for HGC27 cells, including processing and downstream analyses of RUNX3 and chromatin-mark ChIP-seq datasets (e.g., peak calling, annotation, metagene/heatmap profiling, and motif/enrichment analyses) aligned to the human reference genome (GRCh38/hg38). • TMA_Code: Code for tissue microarray (TMA) quantification and statistical analyses used in the manuscript, including nuclear scoring metrics (e.g., H-score/positivity) and figure generation for the two gastric cancer TMAs (ST8013b and ST810d). • 74_liver_metastases_Code: Code used to analyze an independent institutional cohort of 74 resected gastric cancer liver metastases, including RUNX3 IHC intensity/positivity assessments and stratified analyses by histological differentiation grade.