Related Experiment Video
Updated: Jun 11, 2025
Orthotopic Transplantation of Syngeneic Lung Adenocarcinoma Cells to Study PD-L1 Expression
Published on: January 19, 2019
Potential Anti-tumor Properties of PDIA4 in Lung Adenocarcinoma
1Department of Pharmacology, School of Dentistry, Kyungpook National University, Daegu, Republic of Korea.
Background/Aim:
Given the high frequency and mortality rate of lung cancer, diverse molecular studies have been undertaken to understand cancer pathophysiology and develop novel treatment strategies. The PDIA4 gene, which is involved in protein assembly and endoplasmic reticulum homeostasis, is overexpressed in various lung cancer subtypes. However, its exact function in lung adenocarcinoma (LUAD) remains elusive. The study aimed to investigate the role of PDIA4 in LUAD and explore its role as double-agent gene.
Materials And Methods:
PDIA4 expression was knocked out in A549 and LA-4 lung adenoma cells using the Crispr/Cas9 technology. Cell growth, migration, and apoptosis were analyzed in control and PDIA4-deficient cells.
Results:
PDIA4 deficiency resulted in increased cell growth, enhanced migration capacity, and greater resistance to apoptosis in both A549 and LA-4 lung cancer cells. Mechanistically, up-regulation of oxidative stress followed by NF-[Formula: see text]B activation may contribute to tumor-promoting effects observed upon PDIA4 silencing.
Conclusion:
PDIA4 appears to function as a tumor suppressor in lung adenocarcinoma, suggesting that PDIA4 may act as a double-agent gene, with roles both on tumor suppression and promotion depending on the context.
Insights
Protein disulfide isomerase A4 (PDIA4) acts as a tumor suppressor in lung adenocarcinoma. Its absence promotes cancer cell growth and migration, indicating a potential double-agent role in lung cancer progression.
Area of Science:
- Molecular biology
- Cancer research
- Cellular mechanisms
Background:
- Lung cancer, particularly lung adenocarcinoma (LUAD), has high incidence and mortality.
- The PDIA4 gene, implicated in protein folding and ER homeostasis, is overexpressed in LUAD.
- The precise role of PDIA4 in LUAD pathogenesis is not fully understood.
Purpose of the Study:
- To investigate the function of PDIA4 in lung adenocarcinoma.
- To explore the potential dual role of PDIA4 as a "double-agent" gene in cancer.
Main Methods:
- CRISPR/Cas9 gene editing was used to knock out PDIA4 in A549 and LA-4 LUAD cell lines.
- Analysis of cell proliferation, migration, and apoptosis in PDIA4-deficient versus control cells.
Main Results:
- PDIA4 deficiency led to increased cell growth and migration in both cell lines.
- Loss of PDIA4 enhanced resistance to apoptosis.
- Mechanistically, PDIA4 silencing correlated with increased oxidative stress and NF-κB activation.
Conclusions:
- PDIA4 functions as a tumor suppressor in lung adenocarcinoma.
- PDIA4 may act as a double-agent gene, influencing both tumor suppression and promotion.
- These findings suggest PDIA4 as a potential therapeutic target or biomarker in LUAD.
More Related Videos
07:08Author Spotlight: Reprogramming Cancer Cells to iPSCs to Study Disease Progression and Treatment Targets
Published on: February 2, 2024
08:30Immunophenotyping of Orthotopic Homograft Syngeneic of Murine Primary KPC Pancreatic Ductal Adenocarcinoma by Flow Cytometry
Published on: October 9, 2018