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Updated: Dec 15, 2025
Author Spotlight: Unveiling Transmembrane Protein Family-Related Markers in Gastric Cancer and Implications for Targeted Therapies
Published on: September 15, 2023
CLIC1 knockout inhibits invasion and migration of gastric cancer by upregulating AMOT-p130 expression
1Department of Gastrointestinal Surgery, The First Affiliated Hospital of Guangxi Medical University, 6 Shuangyong Road, Nanning, 530021, Guangxi Zhuang Autonomous Region, People's Republic of China.
Purpose:
To explore the regulatory relationship between Chloride intracellular channel 1 (CLIC1) and Angiomotin (AMOT)-p130, and reveal the role of AMOT-p130 in gastric cancer (GC).
Methods:
Immunohistochemistry was performed to analyze the expression of CLIC1 and AMOT-p130 in GC tissues and adjacent tissues. The expression of AMOT-p130 upon CLIC1 silencing was analyzed using RT-PCR, western blot, and immunofluorescence in GC cells. Transwell and wound-healing assays were performed to detect migration and invasion in GC cells. The changes in EMT-related proteins were detected using western blot.
Results:
Our study found that high CLIC1 expression was significantly associated with low AMOT-p130 expression in GC tissues. Silencing CLIC1 expression in MGC-803 cells (MGC-803 CLIC1 KO) and AGS cells (AGS CLIC1 KO) decreased the invasive and migratory abilities of tumor cells, which were induced by the upregulation of AMOT-p130. Subsequently, we demonstrated that AMOT-p130 inhibits the invasive and migratory abilities of GC cells by inhibiting epithelial-mesenchymal transition.
Conclusions:
Our study suggests that AMOT-p130 could inhibit epithelial-mesenchymal transition in GC cells. CLIC1 may participate in the metastatic progression of GC by downregulating the expression of AMOT-p130.
Insights
Chloride intracellular channel 1 (CLIC1) downregulates Angiomotin-p130, promoting gastric cancer (GC) cell invasion. Restoring AMOT-p130 expression inhibits GC cell migration and invasion by suppressing epithelial-mesenchymal transition.
Area of Science:
- Oncology
- Molecular Biology
- Cell Biology
Background:
- Gastric cancer (GC) remains a significant global health challenge with complex underlying molecular mechanisms.
- Understanding the interplay of specific proteins is crucial for developing targeted therapies.
- Chloride intracellular channel 1 (CLIC1) and Angiomotin-p130 (AMOT-p130) are implicated in cancer progression, but their regulatory relationship in GC is unclear.
Purpose of the Study:
- To investigate the regulatory relationship between CLIC1 and AMOT-p130 in gastric cancer.
- To elucidate the role of AMOT-p130 in the biological behavior of gastric cancer cells.
Main Methods:
- Immunohistochemistry to assess CLIC1 and AMOT-p130 expression in GC tissues.
- Gene silencing of CLIC1 in GC cell lines (MGC-803 and AGS) followed by RT-PCR, western blot, and immunofluorescence.
- In vitro assays including Transwell and wound-healing assays to evaluate cell migration and invasion.
- Western blot analysis to detect changes in epithelial-mesenchymal transition (EMT)-related proteins.
Main Results:
- High CLIC1 expression correlated significantly with low AMOT-p130 expression in GC tissues.
- Silencing CLIC1 led to AMOT-p130 upregulation, decreasing the invasive and migratory capacities of GC cells.
- AMOT-p130 was found to inhibit GC cell invasion and migration by suppressing epithelial-mesenchymal transition.
Conclusions:
- AMOT-p130 plays an inhibitory role in epithelial-mesenchymal transition within gastric cancer cells.
- CLIC1 may promote gastric cancer metastasis by downregulating AMOT-p130 expression.
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