Zhengzheng Li1,2,#, Haitong Xie1,2,#, Yujuan Chen1,2, Qiuyan Li3, Xing Yuan4, Xinyue Dai3, Jie Chen1,2,*
Oncology Research, Vol.34, No.7, 2026, DOI:10.32604/or.2026.081209
- 16 June 2026
Abstract Objectives: Triple-negative breast cancer (TNBC) is an aggressive subtype lacking targeted therapies. Phosphoglycerate kinase 1 (PGK1) drives TNBC progression, but mechanisms governing its protein stability remain unclear. This study aims to identify the E3 ubiquitin ligase responsible for PGK1 degradation and evaluate its therapeutic potential against metastasis. Methods: Clinical datasets and 50 human TNBC tissues were analyzed via multiplex immunohistochemistry. Co-immunoprecipitation, ubiquitination linkage assays, and structural modeling were utilized for in vitro mechanistic studies in TNBC cells. Additionally, functional impacts on epithelial-mesenchymal transition (EMT) and metastasis were evaluated using transwell assays and an in vivo mouse lung metastasis… More >