机构：[1]Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, China.医疗乳腺外科河北大学附属医院[2]Florida State University College of Medicine, Tallahassee, FL, USA.
The proliferation and apoptosis of cancer cells play important roles in breast carcinomas. However, to date, there have been few reports on the correlation between the expression of PTEN and AKT phosphorylation in breast cancer. This present study investigated the effects of the phosphatase and tensin homology deleted from chromosome 10 (PTEN) gene on the proliferation and apoptosis of breast cancer cells through protein kinase B (AKT) phosphorylation.Human breast cancer MDA-MB-231 cells were transfected with the pcDNA3.0 control vector or the pcDNA3.0-PTEN vector for 48 hours. The Cell Counting Kit 8 (CCK-8) was used to detect cell survival rates, double staining was performed to detect apoptosis, and Western blot (WB) analysis was conducted to detect protein expression. The effects of PTEN expression on the cell cycle and apoptosis of human breast cancer cell line MDA-MB-231, and on the levels of phosphorylated AKT protein were further analyzed. Moreover, the relationship between the PTEN gene and clinical features were also analyzed.The cell survival rate of cells transfected with pcDNA3.0-PTEN was significantly lower than that of cells transfected with the control pcDNA3.0 vector (55.65%±12.18% vs. 97.32%±12.45%, P=0.004). Compared with the pcDNA3.0 group, the apoptosis rate of the pcDNA3.0-PTEN group was significantly increased (20.65±2.18 vs. 2.32±0.45, P=0.001). The expression of PTEN protein in pcDNA3.0-PTEN group was higher than that in the pcDNA3.0 group, and the expression of the AKT and mTOR proteins was significantly lower than that in pcDNA3.0 group (P<0.05). The expression of PTEN in the lymph node metastasis positive group was significantly higher than that in the lymph node metastasis negative group (P<0.05). The expression of the AKT protein in breast cancer was higher than that in normal breast tissue, and the difference was statistically significant (P<0.01).Overexpression of the PTEN gene can promote AKT phosphorylation, increase the apoptotic index of breast cancer cells, and reduce the proliferative activity of breast cancer cells. This provided a new direction for the next treatment of breast cancer, but further clinical research is needed.2023 Translational Cancer Research. All rights reserved.
第一作者机构：[1]Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, China.
共同第一作者：
通讯作者：
通讯机构：[1]Department of Breast Surgery, Affiliated Hospital of Hebei University, Baoding, China.[*1]Department of Breast Surgery, Affiliated Hospital of Hebei University, No. 212 Yuhua East Road, Lianchi District, Baoding 071030, China.
推荐引用方式(GB/T 7714)：
Zhang Junhua,Zhang Ying,Lin Xiaomeng,et al.The effects of the tumor suppressor gene PTEN on the proliferation and apoptosis of breast cancer cells via AKT phosphorylation[J].Translational Cancer Research.2023,12(7):1863-1872.doi:10.21037/tcr-23-826.
APA：
Zhang Junhua,Zhang Ying,Lin Xiaomeng,Han Xiaoxu,Meredith Kenneth L&Li Zhong.(2023).The effects of the tumor suppressor gene PTEN on the proliferation and apoptosis of breast cancer cells via AKT phosphorylation.Translational Cancer Research,12,(7)
MLA：
Zhang Junhua,et al."The effects of the tumor suppressor gene PTEN on the proliferation and apoptosis of breast cancer cells via AKT phosphorylation".Translational Cancer Research 12..7(2023):1863-1872
