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- Title
Acetylation of Checkpoint suppressor 1 enhances its stability and promotes the progression of triple-negative breast cancer.
- Authors
Xu, Zhaowei; Liu, Shuyan; Feng, Chun; Xu, Fuyi; Kong, Demin; Mi, Jia; Yang, Chunhua; Zhang, Guilong; Wei, Pengfei; Orgil, Buyan-Ochir; Bergquist, Jonas; Tian, Geng
- Abstract
Checkpoint suppressor 1 (CHES1), a transcriptional regulator, had been dysregulated in many types of malignancies including breast cancer, and its expression level is strongly associated with progression and prognosis of patients. However, the underlying regulatory mechanisms of CHES1 expression in the breast cancer and the effects of post-translational modifications (PTMs) on its functional performance remain to be fully investigated. Herein, we found that CHES1 had a high abundance in triple-negative breast cancer (TNBC) and its expression was tightly associated with malignant phenotype and poor outcomes of patients. Furthermore, we confirmed that CHES1 was an acetylated protein and its dynamic modification was mediated by p300 and HDAC1, and CHES1 acetylation enhanced its stability via decreasing its ubiquitination and degradation, which resulted in the high abundance of CHES1 in TNBC. RNA-seq and functional study revealed that CHES1 facilitated the activation of oncogenic genes and pathways leading to proliferation and metastasis of TNBC. Taken together, this research established a novel regulatory role of acetylation on the stability and activity of CHES1. The results demonstrate the significance of CHES1 acetylation and underlying mechanisms in the progression of TNBC, offering new potential candidate for molecular-targeted therapy in breast cancer.
- Subjects
TRIPLE-negative breast cancer; ACETYLATION; POST-translational modification; BREAST cancer; GENETIC regulation; UBIQUITINATION
- Publication
Cell Death Discovery, 2022, Vol 8, Issue 1, p1
- ISSN
2058-7716
- Publication type
Article
- DOI
10.1038/s41420-022-01269-x