Related Experiment Video
Updated: Apr 20, 2026
Author Spotlight: Unveiling Transmembrane Protein Family-Related Markers in Gastric Cancer and Implications for Targeted Therapies
Published on: September 15, 2023
Comparative proteomics in gastric cancer cell line BGC823 after ZNF139 gene inhibited with RNA interference
Background/Aims:
Zinc finger protein 139 (ZNF139) gene is proved play an important role in gastric cancer. Aim of this study is to identify changes of proteins after ZNF139 gene was inhibited in gastric cancer cell line BGC823.
Methods:
siRNA-specific ZNF139 was synthesized and transfected into BGC823; 2-D fluorescence difference gel electrophoresis (2-D DIGE) and liquid chromatography-mass spectrometry (LC-MS) were applied to screen, identify differentially expressed proteins, and function of these proteins was analyzed; Western blot method was applied to verify the identified proteins.
Results:
ZNF139 expression in siRNA transfected cancer cell BGC823 decreased significantly. Results of 2-D DIGE showed eight differential protein spots, of which seven were identified with LC-MS, including switches associated protein 70, far upstream element binding protein 1, heat shock protein 60, annexin A7, small ubiquitin-like modifier 1 activating enzyme, chaperonin-containing tail-less complex protein 1 and annexin A2. These proteins were found to be associated with proliferation, apoptosis, invasion, metastasis, adhesion of gastric cancer cells with bioinformatic analysis. Western blot analysis confirmed that expressions of these proteins in BGC823 were consistent with the proteomic results.
Conclusions:
ZNF139 gene may influence the biological behavior of gastric cancer cells in many ways by regulating multiple proteins.
Insights
Inhibiting the Zinc finger protein 139 (ZNF139) gene in gastric cancer cells altered multiple proteins involved in cell behavior. This suggests ZNF139 regulates key processes in gastric cancer progression.
Area of Science:
- Molecular oncology
- Proteomics
- Cancer biology
Background:
- Zinc finger protein 139 (ZNF139) is implicated in gastric cancer development.
- Understanding ZNF139's molecular targets is crucial for therapeutic strategies.
Purpose of the Study:
- To investigate protein expression changes in gastric cancer cells following ZNF139 gene inhibition.
- To identify specific proteins regulated by ZNF139 in the BGC823 cell line.
Main Methods:
- ZNF139 gene inhibition using small interfering RNA (siRNA) in BGC823 gastric cancer cells.
- Differential protein expression analysis using 2-D fluorescence difference gel electrophoresis (2-D DIGE) and liquid chromatography-mass spectrometry (LC-MS).
- Bioinformatic analysis for functional annotation and Western blot validation of identified proteins.
Main Results:
- Successful inhibition of ZNF139 expression in BGC823 cells.
- Identification of seven differentially expressed proteins, including switches associated protein 70, far upstream element binding protein 1, heat shock protein 60, annexin A7, small ubiquitin-like modifier 1 activating enzyme, chaperonin-containing tail-less complex protein 1, and annexin A2.
- Bioinformatic analysis linked these proteins to critical gastric cancer processes such as proliferation, apoptosis, invasion, metastasis, and adhesion.
Conclusions:
- ZNF139 gene inhibition significantly impacts the proteome of gastric cancer cells.
- ZNF139 likely influences gastric cancer cell behavior through the regulation of multiple protein targets.
- These findings provide insights into the molecular mechanisms underlying ZNF139's role in gastric cancer.
