TP53AIP1 induce autophagy via the AKT/mTOR signaling pathway in the breast cancer cells

被引:0
|
作者
Liu, Shutian [1 ]
Xu, Ting [2 ]
Chen, Xi [3 ]
Tang, Li [1 ]
Li, Longjiang [1 ]
Zhang, Li [1 ]
Yang, Yongqiang [1 ]
Huang, Jiayi [1 ]
机构
[1] Chongqing Med Univ, Coll Basic Med Sci, Dept Pathophysiol, Chongqing, Peoples R China
[2] Chongqing Coll Humanities Sci & Technol, Sch Nursing, Chongqing, Peoples R China
[3] Chongqing Med Univ, Affiliated Hosp 2, Pathol Dept, Chongqing, Peoples R China
关键词
TP53AIP1; breast cancer; autophagy; mTOR; DRUG-RESISTANCE;
D O I
10.1080/15384047.2024.2398297
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Breast cancer ranks the first in the incidence of female cancer and is the most common cancer threatening the life and health of women worldwide.Tumor protein p53-regulated apoptosis-inducing protein 1 (TP53AIP1) is a pro-apoptotic gene downstream of p53. However, the role of TP53AIP1 in BC needs to be investigated. In vitro and in vivo experiments were conducted to assess the biological functions and associated mechanisms. Several bioinformatics analyses were made, CCK8 assay, wound healing, transwell assays, colony formation assay, EDU, flow cytometry, Immunofluorescence, qRT-PCR and Western-blotting were performed. In our study, we discovered that BC samples had low levels of TP53AIP1 expression, which correlated with a lower survival rate in BC patients. When TP53AIP1 was up-regulated, it caused a decrease in cell proliferation, migration, and invasion. It also induced epithelial-to-mesenchymal transition (EMT) and protective autophagy. Furthermore, the over-expression of TP53AIP1 suppressed tumor growth when tested in vivo. We also noticed that TP53AIP1 up-regulation resulted in decreased levels of phosphorylation in AKT and mTOR, suggesting a mechanistic role. In addition, we performed functional rescue experiments where the activation of AKT was able to counteract the impact of TP53AIP1 on the survival and autophagy in breast cancer cell lines. This suggests that TP53AIP1 acts as an oncogene by controlling the AKT/mTOR pathway. These findings reveal TP53AIP1 as a gene that suppresses tumor growth and triggers autophagy through the AKT/mTOR pathway in breast cancer cells. As a result, TP53AIP1 presents itself as a potential target for novel therapeutic approaches in treating breast cancer.
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页数:14
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