Homeobox B7 accelerates the cancer progression of gastric carcinoma cells by promoting epithelial-mesenchymal transition (EMT) and activating Src-FAK pathway.
Onco Targets Ther
; 12: 3743-3751, 2019.
Article
in En
| MEDLINE
| ID: mdl-31190875
ABSTRACT
Aim:
To study the carcinogenetic mechanism of HOXB7 in gastric cancer (GC) remains.Methods:
Two human GC cell lines - SGC7901 and SNU1 - were used for this study. SGC7901 cells were transfected with siRNA-HOXB7 (siHOXB7) to knock down HOXB7 expression, whereas, SNU1 cells were transduced with pCDNA3.1-HOXB7 to overexpress HOXB7. After transfection, cancer progression was assessed by determining cell proliferation, wound-healing process, cell cycle, apoptosis, invasion, and migration. The effect of HOXB7 on epithelial-mesenchymal transition (EMT) was measured by observing changes in F-actin cytoskeleton and evaluating the expression of EMT markers. p-Scr and p-FAK were evaluated to assess the mechanism.Results:
Knockdown of HOXB7 suppressed cell proliferation, alleviated the wound-healing process, inhibited cell migration and invasion, and arrested the cell cycle while promoting cell apoptosis, suggesting the tumor-suppressive effect of siHOXB7 in human GC cells. On the contrary, HOXB7 overexpression showed a tumor-promoting effect on human GC cells. Moreover, we confirmed an inhibitory effect of siHOXB7 on the EMT process by preventing epithelial cells from acquiring a mesenchymal phenotype and downregulating mesenchymal markers (vimentin, ß-catenin, N-cadherin, Twist) while upregulating epithelial markers (E-cadherin). Our data revealed that HOXB7 was associated with Src/FAK and favored the activation of the Src-FAK pathway in human GC cells.Conclusion:
HOXB7 accelerated the malignancy of GC, by facilitating EMT and regulating the Scr-FAK pathway.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Onco Targets Ther
Year:
2019
Document type:
Article