Lu M, Zheng ST, Liu Q, Liu T, Gao XP, Ilyar∙Sheyhidin, Lu XM. Role of PIK3CA in cell proliferation, migration and apoptosis in human esophageal squamous cell carcinoma cell line Ecal09.
Shijie Huaren Xiaohua Zazhi 2014;
22:4893-4900. [DOI:
10.11569/wcjd.v22.i32.4893]
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Abstract
AIM: To explore the role of PIK3CA in cell proliferation, migration and apoptosis in esophageal squamous cell carcinoma (ESCC) cell line Eca109.
METHODS: Eca109 cells were divided into three groups: a blank control group (non-transfected cells), a negative control group (transfected with a scramble siRNA) and an experimental group (transfected with a specific siRNA against PIK3CA). After transfection using Lipofectamin 2000, the protein expression of PIK3CA was detected by Western blot. Cell proliferation and migration were examined by MTT assay and wound healing assay, respectively. Cell apoptosis and cell cycle progression were analyzed by flow cytometry.
RESULTS: After transfection with the specific siRNA against PIK3CA, PIK3CA protein expression was significantly decreased compared with the blank control group and negative control group (P < 0.05). After successful knock-down of PIK3CA, both cell proliferation and migration were significantly reduced (P < 0.05), the cell cycle was arrested at S phase (P < 0.05), and the apoptosis rate was significantly increased (P < 0.05).
CONCLUSION: PIK3CA plays an important role in promoting cell proliferation and migration and suppressing apoptosis, which may become a new potential target in the therapy of metastasis of ESCC.
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