RESUMO

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.

Assuntos

Canais de Cloreto/metabolismo , Transição Epitelial-Mesenquimal , Peptídeos e Proteínas de Sinalização Intercelular/metabolismo , Proteínas dos Microfilamentos/metabolismo , Neoplasias Gástricas/metabolismo , Neoplasias Gástricas/patologia , Angiomotinas , Linhagem Celular Tumoral , Movimento Celular , Canais de Cloreto/genética , Feminino , Inativação Gênica , Humanos , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Proteínas de Neoplasias/genética , Proteínas de Neoplasias/metabolismo , Estadiamento de Neoplasias , Interferência de RNA , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Regulação para Cima , Cicatrização