OCIAD2 Promotes Cancer Progression via Metabolic Reprogramming in Lung Adenocarcinoma.

Area of Science:

• Molecular Biology
• Cancer Research
• Biochemistry

Background:

• Lung adenocarcinoma has a high incidence and limited proteomic understanding.
• Uncharacterized proteins are critical for understanding cancer progression.
• OCIAD2 (OCIA domain-containing 2) was identified as upregulated in lung adenocarcinoma.

Purpose of the Study:

• To investigate the role of OCIAD2 in lung adenocarcinoma progression.
• To explore OCIAD2's impact on cell migration, invasion, and colony formation.
• To determine OCIAD2's involvement in cellular metabolism and its effect on oxidative phosphorylation.

Main Methods:

• Proteogenomic analysis of the Taiwan Cancer Moonshot cohort.
• Gene silencing of OCIAD2 in lung adenocarcinoma cells.
• Gene Set Enrichment Analysis (GSEA).
• Mitochondrial metabolic assays.

Main Results:

• OCIAD2 was highly expressed in 95.5% of lung adenocarcinoma tumor tissues.
• Elevated OCIAD2 expression correlated with worse patient survival.
• OCIAD2 silencing reduced cell migration, invasion, and colony formation.
• OCIAD2 impairs oxidative phosphorylation (OXPHOS) and promotes glycolysis.

Conclusions:

• OCIAD2 promotes lung adenocarcinoma progression via metabolic reprogramming.
• OCIAD2 functions as a potential biomarker for lung adenocarcinoma.
• OCIAD2 represents a potential therapeutic target for lung adenocarcinoma.