PFKP deubiquitination and stabilization by USP5 activate aerobic glycolysis to promote triple-negative breast cancer progression

被引:9
作者
Peng, Zi-Mei [1 ]
Han, Xiao-Jian [2 ]
Wang, Tao [2 ]
Li, Jian-Jun [3 ]
Yang, Chun-Xi [1 ]
Tou, Fang-Fang [4 ]
Zhang, Zhen [1 ]
机构
[1] Nanchang Med Coll, Jiangxi Prov Peoples Hosp, Inst Clin Med, Affiliated Hosp 1, 152 Aiguo Rd, Nanchang 330006, Jiangxi, Peoples R China
[2] Nanchang Med Coll, Jiangxi Prov Peoples Hosp, Inst Geriatr, Affiliated Hosp 1, Nanchang, Jiangxi, Peoples R China
[3] Soochow Univ, Dept Pulm & Crit Care Med, Affiliated Hosp 1, Suzhou, Peoples R China
[4] Nanchang Med Coll, Jiangxi Prov Peoples Hosp, Dept Oncol, Affiliated Hosp 1, Nanchang, Jiangxi, Peoples R China
关键词
TNBC; USP5; PFKP; Aerobic glycolysis; Cancer progression; PHOSPHOFRUCTOKINASE;
D O I
10.1186/s13058-024-01767-z
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
BackgroundTriple-negative breast cancer (TNBC) remains the most challenging subtype of breast cancer and lacks definite treatment targets. Aerobic glycolysis is a hallmark of metabolic reprogramming that contributes to cancer progression. PFKP is a rate-limiting enzyme involved in aerobic glycolysis, which is overexpressed in various types of cancers. However, the underlying mechanisms and roles of the posttranslational modification of PFKP in TNBC remain unknown.MethodsTo explore whether PFKP protein has a potential role in the progression of TNBC, protein levels of PFKP in TNBC and normal breast tissues were examined by CPTAC database analysis, immunohistochemistry staining (IHC), and western blotting assay. Further CCK-8 assay, colony formation assay, EDU incorporation assay, and tumor xenograft experiments were used to detect the effect of PFKP on TNBC progression. To clarify the role of the USP5-PFKP pathway in TNBC progression, ubiquitin assay, co-immunoprecipitation (Co-IP), mass spectrometry-based protein identification, western blotting assay, immunofluorescence microscopy, in vitro binding assay, and glycolysis assay were conducted.ResultsHerein, we showed that PFKP protein was highly expressed in TNBC, which was associated with TNBC progression and poor prognosis of patients. In addition, we demonstrated that PFKP depletion significantly inhibited the TNBC progression in vitro and in vivo. Importantly, we identified that PFKP was a bona fide target of deubiquitinase USP5, and the USP5-mediated deubiquitination and stabilization of PFKP were essential for cancer cell aerobic glycolysis and TNBC progression. Moreover, we found a strong positive correlation between the expression of USP5 and PFKP in TNBC samples. Notably, the high expression of USP5 and PFKP was significantly correlated with poor clinical outcomes.ConclusionsOur study established the USP5-PFKP axis as an important regulatory mechanism of TNBC progression and provided a rationale for future therapeutic interventions in the treatment of TNBC.
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页数:14
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