Perspectives from machine learning and multi-omics to decoding the effects of VDAC2 malignant subsets on tumor...

Area of Science:

• Oncology
• Immunology
• Molecular Biology

Background:

• Voltage-dependent anion channel 2 (VDAC2) is implicated in cancer and immune regulation, particularly in CD8+ T cell-mediated killing.
• Systematic investigation of VDAC2's pan-cancer role is warranted given its known functions.

Purpose of the Study:

• To comprehensively analyze the role of VDAC2 across various cancer types (pan-cancer).
• To explore VDAC2's potential as a prognostic biomarker and therapeutic target.

Main Methods:

• Utilized bulk RNA sequencing, single-cell RNA sequencing, and spatial transcriptomics for multi-perspective analysis.
• Performed RT-PCR, cell co-culture, CCK-8, Transwell invasion assays, and ELISA for validation.
• Conducted functional enrichment analyses to understand VDAC2's biological pathways.

Main Results:

• VDAC2 was found to be upregulated in the majority of pan-cancers studied.
• Functional enrichment indicated VDAC2's involvement in energy metabolism, mitochondrial damage, and cell proliferation.
• Identified the VDAC2-BAK1-IFNγ pathway in digestive cancers, linking VDAC2 to tumor progression and immune evasion.
• Overexpression of VDAC2 promoted gastric cancer cell proliferation, invasion, and immune invasion in vitro.

Conclusions:

• VDAC2 plays a significant oncogenic role across multiple cancer types.
• The VDAC2-BAK1-IFNγ pathway is crucial for tumor progression and immune evasion.
• VDAC2 serves as a valuable prognostic biomarker and a promising therapeutic target for various cancers.