The USP7 Inhibitor P5091 Induces Cell Death in Ovarian Cancers with Different P53 Status

Wang, Mengying; Zhang, Yayun; Wang, Taishu; Zhang, Jinrui; Zhou, Zhu; Sun, Yan; Wang, Shanshan; Shi, Yulin; Luan, Xuelin; Zhang, Yingqiu; Wang, Yifei; Wang, Yang; Zhong-wen, Zou; Kang, Lan; Liu, Han

doi:10.1159/000484062

Cited by 52 publications

(53 citation statements)

References 42 publications

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“…Western blot analysis was performed as previously described [10]. Total proteins from OC tissues and each group of cells were harvested and lysed with RIPA buffer (Beyotime, Beijing, China).…”

Section: Western Blot Analysismentioning

confidence: 99%

PRR11 Overexpression Facilitates Ovarian Carcinoma Cell Proliferation, Migration, and Invasion Through Activation of the PI3K/AKT/β-Catenin Pathway

Zhu

Wang

et al. 2018

Cell Physiol Biochem

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Background/Aims: Ovarian cancer (OC) is the most lethal gynecologic malignancy, mainly due to the advanced stage at diagnosis in most patients and high rate of relapse. Thus, it is still essential to elucidate the underlying mechanisms and explore the diagnostic and therapeutic targets of OC. Recent studies have revealed that proline-rich protein 11 (PRR11) is dysregulated in different cancers, participating in their initiation and progression; however, it remains unclear whether PRR11 is involved in OC. Methods: Immunohistochemical staining, quantitative reverse transcription PCR, and western blotting were performed to evaluate PRR11 expression in OC tissues and cells. The relationship between PRR11 expression and the clinicopathologic data of patients were analyzed. We upregulated and downregulated PRR11 expression using a PRR11 overexpression vector and PRR11-specifc small interfering RNA, respectively, to further clarify its role in the malignant biological behavior of OC in vitro. Results: Overexpression of PRR11 in OC tissues and cells significantly correlated with advanced FIGO stage, lymph node metastasis, and large tumor size. Downregulation of PRR11 inhibited cell proliferation and prevented the invasion and migration of HO-8910 OC cells, whereas opposite results were observed in Caov3 cells upon PRR11 upregulation. Further analyses showed that PRR11 positively regulated cell proliferation-related proteins, including c-myc and cyclin D1, and increased and decreased the expression of matrix metalloproteinase 2 and tissue inhibitor of metalloproteinase 2, respectively. Additionally, our preliminary results demonstrated that PRR11 expression was mediated by the phosphoinositide 3-kinase/AKT/β-catenin signaling pathway. Conclusion: The results of this study provide evidence that PRR11 plays a critical role in the progression and metastasis of OC, and as such, may serve as a potential prognostic and therapeutic target in OC.

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Section: Western Blot Analysismentioning

confidence: 99%

PRR11 Overexpression Facilitates Ovarian Carcinoma Cell Proliferation, Migration, and Invasion Through Activation of the PI3K/AKT/β-Catenin Pathway

Zhu

Wang

et al. 2018

Cell Physiol Biochem

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“…Expression of P-SMAD2, ATG7, MARCH7 and GAPDH proteins was analyzed by Western blotting [11,12]. The primary antibodies used included polyclonal rabbit anti-MARCH7 (1:500, bs-9341R, Bioss, Beijing, China); Rabbit monoclonal to p-Smad2 (1:1000; ab188334; Abcam Inc., Cambridge, MA, USA); Anti-ATG7 rabbit monoclonal antibody (1:1000, ab52472, abcam), and polyclonal rabbit anti-GAPDH (1:1000; AB10016; Sangon Biotech, Shanghai, China).…”

Section: Detection Of Protein Expression By Western Blottingmentioning

confidence: 99%

Interaction of E3 Ubiquitin Ligase MARCH7 with Long Noncoding RNA MALAT1 and Autophagy-Related Protein ATG7 Promotes Autophagy and Invasion in Ovarian Cancer

Zhang

Mei

et al. 2018

Cell Physiol Biochem

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Background/Aims: Ubiquitin E3 ligase MARCH7 plays an important role in T cell proliferation and neuronal development. But its role in ovarian cancer remains unclear. This study aimed to investigate the role of Ubiquitin E3 ligase MARCH7 in ovarian cancer. Methods: Real-time PCR, immunohistochemistry and western blotting analysis were performed to determine the expression of MARCH7, MALAT1 and ATG7 in ovarian cancer cell lines and clinical specimens. The role of MARCH7 in maintaining ovarian cancer malignant phenotype was examined by Wound healing assay, Matrigel invasion assays and Mouse orthotopic xenograft model. Luciferase reporter assay, western blot analysis and ChIP assay were used to determine whether MARCH7 activates TGF-β-smad2/3 pathway by interacting with TGFβR2. Results: MARCH7 interacted with MALAT1 by miR-200a (microRNA-200a). MARCH7 may function as a competing endogenous RNA (ceRNA) to regulate the expression of ATG7 by competing with miR-200a. MARCH7 regulated TGF-β-smad2/3 pathway by interacting with TGFβR2. Inhibition of TGF-β-smad2/3 pathway downregulated MARCH7, MALAT1 and ATG7. MiR-200a regulated TGF-β induced autophagy, invasion and metastasis of SKOV3 cells by targeting MARCH7. MARCH7 silencing inhibited autophagy invasion and metastasis of SKOV3 cells both in vitro and in vivo. In contrast, MARCH7 overexpression promoted TGF-β induced autophagy, invasion and metastasis of A2780 cells in vitro by depending on MALAT1 and ATG7. We also found that TGF-β-smad2/3 pathway regulated MARCH7 and ATG7 through MALAT1. Conclusions: These findings suggested that TGFβR2-Smad2/3-MALAT1/MARCH7/ATG7 feedback loop mediated autophagy, migration and invasion in ovarian cancer.

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“…25 Meanwhile, P5091 induced apoptosis in multiple myeloma cells resistant to conventional and bortezomib therapies. 25 Additionally, P5091 could effectively suppress ovarian 33 and colorectal cancer 34 cells growth, cause cell cycle blockage, and induce necrosis and apoptosis.…”

mentioning

confidence: 99%

Targeting the overexpressed USP7 inhibits esophageal squamous cell carcinoma cell growth by inducing NOXA‐mediated apoptosis

Zhang

Sha

et al. 2018

Molecular Carcinogenesis

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Increasing evidence suggests that deubiquitinase USP7 participates in tumor progression by various mechanisms and serves as a potential therapeutic target. However, its expression and role in esophageal cancer remains elusive; the anti-cancer effect by targeting USP7 still needs to be investigated. Here, we reported that USP7 was overexpressed in esophageal squamous cell carcinoma (ESCC) tissues compared with adjacent tissues, implying that USP7 was an attractive anticancer target of ESCC. Pharmaceutical or genetic inactivation of USP7 inhibited esophageal cancer cells growth in vitro and in vivo and induced apoptosis. Mechanistically, inhibition of USP7 accumulated poly-ubiquitinated proteins, activated endoplasmic reticulum stress, and increased expression of ATF4, which transcriptionally upregulated expression of NOXA and induced NOXA-mediated apoptosis. These results provide an evidence for clinical investigation of USP7 inhibitors for the treatment of ESCC.

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The USP7 Inhibitor P5091 Induces Cell Death in Ovarian Cancers with Different P53 Status

Cited by 52 publications

References 42 publications

PRR11 Overexpression Facilitates Ovarian Carcinoma Cell Proliferation, Migration, and Invasion Through Activation of the PI3K/AKT/β-Catenin Pathway

PRR11 Overexpression Facilitates Ovarian Carcinoma Cell Proliferation, Migration, and Invasion Through Activation of the PI3K/AKT/β-Catenin Pathway

Interaction of E3 Ubiquitin Ligase MARCH7 with Long Noncoding RNA MALAT1 and Autophagy-Related Protein ATG7 Promotes Autophagy and Invasion in Ovarian Cancer

Targeting the overexpressed USP7 inhibits esophageal squamous cell carcinoma cell growth by inducing NOXA‐mediated apoptosis

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