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Liao Y, Liang J, Wang Y, Li A, Liu W, Zhong B, Wang K, Zhou D, Guo T, Guo J, Yu X, Jiang N. Target deubiquitinase OTUB1 as a therapeatic strategy for BLCA via β-catenin/necroptosis signal pathway. Int J Biol Sci 2024; 20:3784-3801. [PMID: 39113709 PMCID: PMC11302878 DOI: 10.7150/ijbs.94013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 04/28/2024] [Indexed: 08/10/2024] Open
Abstract
Ubiquitination, a prevalent and highly dynamic reversible post-translational modification, is tightly regulated by the deubiquitinating enzymes (DUBs) superfamily. Among them, OTU Domain-Containing Ubiquitin Aldehyde-Binding Protein 1 (OTUB1) stands out as a critical member of the OTU deubiquitinating family, playing a pivotal role as a tumor regulator across various cancers. However, its specific involvement in BLCA (BLCA) and its clinical significance have remained ambiguous. This study aimed to elucidate the biofunctions of OTUB1 in BLCA and its implications for clinical prognosis. Our investigation revealed heightened OTUB1 expression in BLCA, correlating with unfavorable clinical outcomes. Through in vivo and in vitro experiments, we demonstrated that increased OTUB1 levels promote BLCA tumorigenesis and progression, along with conferring resistance to cisplatin treatment. Notably, we established a comprehensive network involving OTUB1, β-catenin, necroptosis, and BLCA, delineating their regulatory interplay. Mechanistically, we uncovered that OTUB1 exerts its influence by deubiquitinating and stabilizing β-catenin, leading to its nuclear translocation. Subsequently, nuclear β-catenin enhances the transcriptional activity of c-myc and cyclin D1 while suppressing the expression of RIPK3 and MLKL, thereby fostering BLCA progression and cisplatin resistance. Importantly, our clinical data suggest that the OTUB1/β-catenin/RIPK3/MLKL axis holds promise as a potential biomarker for BLCA.
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Affiliation(s)
- Yihao Liao
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
- Department of Urology, The First College of Clinical Medical Science, China Gorges University & Yichang Central People's Hospital, Yichang, Hubei, 443003, 100000, China
| | - Jiaming Liang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Youzhi Wang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - An Li
- Department of respiratory medicine, Chinese PLA general hospital, Beijing, China
| | - Wenbo Liu
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Boqiang Zhong
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Keke Wang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Diansheng Zhou
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Tao Guo
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Jianing Guo
- Department of Pathology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Xi Yu
- Department of Anesthesia, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
| | - Ning Jiang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China
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Notch1 Is Involved in Physiologic Cardiac Hypertrophy of Mice via the p38 Signaling Pathway after Voluntary Running. Int J Mol Sci 2023; 24:ijms24043212. [PMID: 36834623 PMCID: PMC9966550 DOI: 10.3390/ijms24043212] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/26/2023] [Accepted: 02/01/2023] [Indexed: 02/10/2023] Open
Abstract
Appropriate exercise such as voluntary wheel-running can induce physiological cardiac hypertrophy. Notch1 plays an important role in cardiac hypertrophy; however, the experimental results are inconsistent. In this experiment, we aimed to explore the role of Notch1 in physiological cardiac hypertrophy. Twenty-nine adult male mice were randomly divided into a Notch1 heterozygous deficient control (Notch1+/- CON) group, a Notch1 heterozygous deficient running (Notch1+/- RUN) group, a wild type control (WT CON) group, and a wild type running (WT RUN) group. Mice in the Notch1+/- RUN and WT RUN groups had access to voluntary wheel-running for two weeks. Next, the cardiac function of all of the mice was examined by echocardiography. The H&E staining, Masson trichrome staining, and a Western blot assay were carried out to analyze cardiac hypertrophy, cardiac fibrosis, and the expression of proteins relating to cardiac hypertrophy. After two-weeks of running, the Notch1 receptor expression was decreased in the hearts of the WT RUN group. The degree of cardiac hypertrophy in the Notch1+/- RUN mice was lower than that of their littermate control. Compared to the Notch1+/- CON group, Notch1 heterozygous deficiency could lead to a decrease in Beclin-1 expression and the ratio of LC3II/LC3I in the Notch1+/- RUN group. The results suggest that Notch1 heterozygous deficiency could partly dampen the induction of autophagy. Moreover, Notch1 deficiency may lead to the inactivation of p38 and the reduction of β-catenin expression in the Notch1+/- RUN group. In conclusion, Notch1 plays a critical role in physiologic cardiac hypertrophy through the p38 signaling pathway. Our results will help to understand the underlying mechanism of Notch1 on physiological cardiac hypertrophy.
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Qiu L, Li C, Zheng G, Yang T, Yang F. Microduplication of BTRC detected in a Chinese family with split hand/foot malformation type 3. Clin Genet 2022; 102:451-456. [PMID: 35908152 DOI: 10.1111/cge.14204] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/24/2022] [Accepted: 07/25/2022] [Indexed: 01/08/2023]
Abstract
Split hand/foot malformation (SHFM) is a clinically heterogeneous genetic disorder, which is mainly characterized by median clefts of the hand/feet due to the absence of the central digital rays. Several subgroups of SHFM have been identified, including SHFM1 to SHFM6. SHFM3 is an autosomal dominant disease, which has been identified to associate with a 500 kb microduplication at 10q24. The duplication involved several genes, including LBX1, BTRC, POLL, FBXW4, etc. In the study, using trio clinical exome sequencing, a 120 kb microduplication containing only BTRC were identified in a Chinese family affected with SHFM3. Further confirmation was performed using qRT-PCR assay, which showed that the 120 kb duplication was co-segregated with SHFM phenotypes in the family. It is the smallest duplication which has ever been reported relating to SHFM3. Furthermore, the transcription levels of BTRC mRNA in lymphocyte of the proband was significantly higher than that in the healthy control. The study provided evidence for the limb malformation caused by abnormal BTRC expression, and suggested that next generation sequencing could provide more precise diagnosis to SHFM3 patients. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Liyan Qiu
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Caimin Li
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Guiyun Zheng
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Tuyin Yang
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Fang Yang
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China.,Nanfang Hospital of Southern Medical University, Guangzhou, China
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Barati N, Tafrihi M, A Najafi SM. Membrane Localization of β-Catenin in Prostate Cancer PC3 Cells Treated with Teucrium persicum Boiss. Extract. Nutr Cancer 2021; 74:1819-1828. [PMID: 34343037 DOI: 10.1080/01635581.2021.1961829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Teucrium persicum Boiss. is an Iranian endemic plant which belongs to the Lamiaceae family and has been used to relieve pains in traditional Iranian medicine. We have previously found that treatment of prostate cancer PC3 cells with Teucrium persicum extract leads to the formation of small populations of epithelial cells. β-Catenin is a component of cell adherens junctions in epithelial cells and therefore, in this study, we have investigated the effect of Teucrium persicum extract on expression, cellular localization, and transcriptional activity of β-Catenin protein in PC-3 cells. Indirect immunofluorescence microscopy results showed that the cells treated with T. persicum extract had higher levels of β-Catenin protein at the cell membrane. Western blotting experiments produced consistent results. Gene expression studies by using a few β-Catenin-target genes including c-MYC, CYCLIN D1, and a reporter Luciferase gene under the control of several β-Catenin/TCF binding elements showed that treatment of PC3 cells with the methanolic extract of T. persicum decreases the transcriptional activities of β-Catenin. The results of this study provide further support for the anticancer properties of T. persicum. Definitely, more detailed molecular investigations are needed to find the mechanism(s) behind these effects. Highlightsβ-Catenin protein is a main component of Wnt signaling pathway and adherens junction.Activation of Wnt signaling pathway affects translocation of β-Catenin.Teucrium persicum extract induces β-Catenin localization at cell membrane.Teucrium persicum affects the transcriptional activity of β-Catenin.It stabilizes E-cadherin/β-Catenin protein complex and adherens junction.
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Affiliation(s)
- Narges Barati
- Department of Cell and Molecular Biology, School of Biology, University of Tehran, Tehran, Iran
| | - Majid Tafrihi
- Department of Molecular and Cell Biology, Faculty of Sciences, University of Mazandaran, Babolsar, Mazandaran, Iran
| | - S Mahmoud A Najafi
- Department of Cell and Molecular Biology, School of Biology, University of Tehran, Tehran, Iran
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Zhang B, Binks T, Burke R. The E3 ubiquitin ligase Slimb/β-TrCP is required for normal copper homeostasis in Drosophila. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118768. [DOI: 10.1016/j.bbamcr.2020.118768] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 04/27/2020] [Accepted: 05/29/2020] [Indexed: 12/21/2022]
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6-Bromoindirubin-3'-oxime intercepts GSK3 signaling to promote and enhance skeletal muscle differentiation affecting miR-206 expression in mice. Sci Rep 2019; 9:18091. [PMID: 31792344 PMCID: PMC6889408 DOI: 10.1038/s41598-019-54574-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 11/12/2019] [Indexed: 12/17/2022] Open
Abstract
Dystrophies are characterized by progressive skeletal muscle degeneration and weakness as consequence of their molecular abnormalities. Thus, new drugs for restoring skeletal muscle deterioration are critically needed. To identify new and alternative compounds with a functional role in skeletal muscle myogenesis, we screened a library of pharmacologically active compounds and selected the small molecule 6-bromoindirubin-3′-oxime (BIO) as an inhibitor of myoblast proliferation. Using C2C12 cells, we examined BIO’s effect during myoblast proliferation and differentiation showing that BIO treatment promotes transition from cell proliferation to myogenic differentiation through the arrest of cell cycle. Here, we show that BIO is able to promote myogenic differentiation in damaged myotubes in-vitro by enriching the population of newly formed skeletal muscle myotubes. Moreover, in-vivo experiments in CTX-damaged TA muscle confirmed the pro-differentiation capability of BIO as shown by the increasing of the percentage of myofibers with centralized nuclei as well as by the increasing of myofibers number. Additionally, we have identified a strong correlation of miR-206 with BIO treatment both in-vitro and in-vivo: the enhanced expression of miR-206 was observed in-vitro in BIO-treated proliferating myoblasts, miR-206 restored expression was observed in a forced miR-206 silencing conditions antagomiR-mediated upon BIO treatment, and in-vivo in CTX-injured muscles miR-206 enhanced expression was observed upon BIO treatment. Taken together, our results highlight the capacity of BIO to act as a positive modulator of skeletal muscle differentiation in-vitro and in-vivo opening up a new perspective for novel therapeutic targets to correct skeletal muscle defects.
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Zhu B, Xue F, Li G, Zhang C. CRYAB promotes osteogenic differentiation of human bone marrow stem cells via stabilizing β-catenin and promoting the Wnt signalling. Cell Prolif 2019; 53:e12709. [PMID: 31638302 PMCID: PMC6985673 DOI: 10.1111/cpr.12709] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 08/12/2019] [Accepted: 09/02/2019] [Indexed: 12/14/2022] Open
Abstract
Objectives The osteogenesis differentiation of human bone marrow stem cells (BMSCs) is essential for bone formation and bone homeostasis. In this study, we aim to elucidate novel molecular targets for bone metabolism diseases. Materials and methods The dataset GSE80614 which includes mRNA expression profile during BMSCs osteogenic differentiation was obtained from the GEO database (https://www.ncbi.nlm.nih.gov/geo/). The osteogenic differentiation of BMSCs was measured by ALP staining, AR staining and expression of osteogenic markers in vitro. For in vivo assay, we seeded BMSCs onto beta‐tricalcium phosphate (β‐TCP) and transplanted them into muscle pockets of nude mice. Luciferase assay, co‐immunoprecipitation assay and in vitro ubiquitination assay were carried out to investigate the molecular mechanism. Results We found that α‐B‐crystallin (CRYAB) expression was elevated during the process of BMSCs osteogenic differentiation. Further studies showed that upregulation of CRYAB significantly enhanced the osteogenic differentiation, while downregulation of CRYAB suppressed it. CRYAB regulated BMSCs osteogenic differentiation mainly through the canonical Wnt/β‐catenin signalling. In addition, we found that CRYAB could physically interact with β‐catenin and protect it from ubiquitination and degradation, which stabilized β‐catenin and promoted the Wnt signalling. Conclusions The present study provides evidences that CRYAB is an important regulator of BMSCs osteogenic differentiation by protecting β‐catenin from ubiquitination and degradation and promoting the Wnt signalling. It may serve as a potential therapeutic target for diseases related to bone metabolism.
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Affiliation(s)
- Bin Zhu
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Feng Xue
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Guangyi Li
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Changqing Zhang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Zhu B, Xue F, Zhang C, Li G. Ginkgolide B promotes osteoblast differentiation via activation of canonical Wnt signalling and alleviates osteoporosis through a bone anabolic way. J Cell Mol Med 2019; 23:5782-5793. [PMID: 31225702 PMCID: PMC6653448 DOI: 10.1111/jcmm.14503] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 05/03/2019] [Accepted: 06/03/2019] [Indexed: 12/18/2022] Open
Abstract
Osteoporosis has become a worldwide problem as the population ages. Although many advances have been made in the treatment of osteoporosis in the past few years, the outcome are sometimes disturbing because of the adverse effects of these treatments. Further studies are still needed to identify novel alternate agents to improve the therapeutic effect. Ginkgolide B (GB), a derivative of Ginkgo biloba leaves, has numerous pharmacological effects, including anticancer and anti-inflammation activities. However, the effect of GB on the regulation of osteoblast activity and bone formation effect has not yet been investigated. In this study, we showed the in vitro and in vivo effects of GB on osteoblast differentiation and bone formation. We found that GB promotes osteoblast differentiation of Bone Mesenchymal Stem Cells (BMSCs) and MC3T3-E1 cells in vitro in a Wnt/β-catenin-dependent manner. In an in vivo study, we constructed a cranial defect model in rats and treated with GB. Histomorphometric and histological analyses confirmed that the usage of GB significantly promotes bone formation. Further study on ovariectomy (OVX) rats demonstrated that GB is capable of alleviating ovariectomy-induced bone loss by enhancing osteoblast activity. Our findings indicate that GB is a potential therapeutic agent of osteoporosis through an anabolic way in bone.
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Affiliation(s)
- Bin Zhu
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Feng Xue
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Changqing Zhang
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Guangyi Li
- Department of Orthopaedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Ye ZN, Yuan F, Liu JQ, Peng XR, An T, Li X, Kong LM, Qiu MH, Li Y. Physalis peruviana-Derived 4β-Hydroxywithanolide E, a Novel Antagonist of Wnt Signaling, Inhibits Colorectal Cancer In Vitro and In Vivo. Molecules 2019; 24:molecules24061146. [PMID: 30909473 PMCID: PMC6471161 DOI: 10.3390/molecules24061146] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/13/2019] [Accepted: 03/20/2019] [Indexed: 12/17/2022] Open
Abstract
Deregulation of the Wnt signaling pathway leads to colorectal cancer progression. Natural dietary compounds serve as promising candidates for development as chemopreventive agents by suppressing the Wnt/β-catenin signaling pathway. Physalis peruviana-derived 4βHWE showed a significant inhibitory activity with a calculated IC50 of 0.09 μΜ in a screening of novel inhibitors of Wnt signaling with the dual-luciferase reporter assay. This study investigated the anti-tumor effect of 4βHWE and the potential Wnt signaling inhibitory mechanism. Both the western blot analysis and immunofluorescence assay showed that 4βHWE promoted the phosphorylation and degradation of β-catenin and the subsequent inhibition of its nuclear translocation to attenuate the endogenous Wnt target gene expression in colorectal cancer (CRC) cells. The cell viability assay indicated that 4βHWE preferentially inhibited the proliferation of CRC compared with CCD-841-CoN, a normal human colonic epithelial cell line. 4βHWE-mediated G0/G1 cell cycle arrest and apoptosis induction contributed to the suppression of the proliferation of CRC in the cell cycle and Annexin V-FITC/Propidium Iodide apoptosis analysis. Moreover, in vivo, 4βHWE dramatically inhibited tumor growth in HCT116 xenografts by attenuating the Wnt/β-catenin signaling pathway. In conclusion, our study suggested that 4βHWE could be of potential use in anti-tumor agent development as a novel Wnt signaling inhibitor.
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Affiliation(s)
- Zhen-Nan Ye
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
- University of the Chinese Academy of Sciences, Beijing 100049, China.
- Present Address: Department of Biochemistry II, Jena University Hospital, 07743 Jena, Germany.
| | - Feng Yuan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
- University of the Chinese Academy of Sciences, Beijing 100049, China.
| | - Jie-Qing Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
| | - Xing-Rong Peng
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
| | - Tao An
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
| | - Xue Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
- University of the Chinese Academy of Sciences, Beijing 100049, China.
| | - Ling-Mei Kong
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
| | - Ming-Hua Qiu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
| | - Yan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
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Wang Q, Lv Q, Bian H, Yang L, Guo KL, Ye SS, Dong XF, Tao LL. A novel tumor suppressor SPINK5 targets Wnt/β-catenin signaling pathway in esophageal cancer. Cancer Med 2019; 8:2360-2371. [PMID: 30868765 PMCID: PMC6537088 DOI: 10.1002/cam4.2078] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 01/07/2019] [Accepted: 01/31/2019] [Indexed: 12/24/2022] Open
Abstract
Esophageal cancer is one of the most common tumor in the world, and the morbidity rate is as high as 100/100 000 in some parts of China. Therefore, it is important and urgent to explore the pathogenesis of esophageal cancer and find new therapeutic targets for esophageal cancer. In this study, we found that a novel tumor suppressor SPINK5 is significantly reduced in the development of esophageal cancer, and is closely related to the pathological differentiation and lymph node metastasis of esophageal cancer via bioinformatics analysis and esophageal cancer tissue array. Further studies have found that SPINK5 is closely related to Wnt/β‐catenin signaling pathway by bioinformatics analysis and western blot. In esophageal cancer cells, SPINK5 overexpression can inhibit Wnt/β‐catenin signaling pathway. Combined with LiCl or MG‐132 treatment, SPINK5 can inhibit GSK3β phosphorylation and promote β‐catenin protein degradation, thus inhibit Wnt/β‐catenin signaling pathway. In vivo study, SPINK5 overexpression can significantly inhibit the growth of esophageal cancer cells. Our study shows that SPINK5 can inhibit the proliferation, migration, and invasion of esophageal cancer cells by inhibiting Wnt/β‐catenin signaling pathway, and thus plays an important role in the development of esophageal cancer, and may serve as a treatment target of esophageal cancer.
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Affiliation(s)
- Qian Wang
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China.,Henan Key Laboratory of Zhang Zhongjing Formulae and Herbs for Immunoregulation, Nanyang Institute of Technology, Nanyang, China
| | - Qin Lv
- Nanyang Medical College, Nanyang, China
| | - Hua Bian
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China.,Henan Key Laboratory of Zhang Zhongjing Formulae and Herbs for Immunoregulation, Nanyang Institute of Technology, Nanyang, China
| | - Lei Yang
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China.,Henan Key Laboratory of Zhang Zhongjing Formulae and Herbs for Immunoregulation, Nanyang Institute of Technology, Nanyang, China
| | - Ke-Lei Guo
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China.,Henan Key Laboratory of Zhang Zhongjing Formulae and Herbs for Immunoregulation, Nanyang Institute of Technology, Nanyang, China
| | - Song-Shan Ye
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China.,Henan Key Laboratory of Zhang Zhongjing Formulae and Herbs for Immunoregulation, Nanyang Institute of Technology, Nanyang, China
| | - Xue-Feng Dong
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China
| | - Ling-Ling Tao
- Zhang Zhongjing College of Chinese Medicine, Nanyang Institute of Technology, Nanyang, China
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Weipixiao ameliorates gastric precancerous lesions in a rat's model by regulating GSK3β and C-myc. J TRADIT CHIN MED 2018. [DOI: 10.1016/s0254-6272(18)30909-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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12
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Zhang Z, Cheng L, Li J, Farah E, Atallah NM, Pascuzzi PE, Gupta S, Liu X. Inhibition of the Wnt/β-Catenin Pathway Overcomes Resistance to Enzalutamide in Castration-Resistant Prostate Cancer. Cancer Res 2018; 78:3147-3162. [PMID: 29700003 DOI: 10.1158/0008-5472.can-17-3006] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 02/07/2018] [Accepted: 04/16/2018] [Indexed: 11/16/2022]
Abstract
Enzalutamide is a second-generation nonsteroidal antiandrogen clinically approved for the treatment of castration-resistant prostate cancer (CRPC), yet resistance to endocrine therapy has limited its success in this setting. Although the androgen receptor (AR) has been associated with therapy failure, the mechanisms underlying this failure have not been elucidated. Bioinformatics analysis predicted that activation of the Wnt/β-catenin pathway and its interaction with AR play a major role in acquisition of enzalutamide resistance. To validate the finding, we show upregulation of β-catenin and AR in enzalutamide-resistant cells, partially due to reduction of β-TrCP-mediated ubiquitination. Although activation of the Wnt/β-catenin pathway in enzalutamide-sensitive cells led to drug resistance, combination of β-catenin inhibitor ICG001 with enzalutamide inhibited expression of stem-like markers, cell proliferation, and tumor growth synergistically in various models. Analysis of clinical datasets revealed a molecule pattern shift in different stages of prostate cancer, where we detected a significant correlation between AR and β-catenin expression. These data identify activation of the Wnt/β-catenin pathway as a major mechanism contributing to enzalutamide resistance and demonstrate the potential to stratify patients with high risk of said resistance.Significance: Wnt/β-catenin inhibition resensitizes prostate cancer cells to enzalutamide. Cancer Res; 78(12); 3147-62. ©2018 AACR.
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Affiliation(s)
| | - Lijun Cheng
- Department of Biomedical Informatics, The Ohio State University, Columbus, Ohio
| | - Jie Li
- Department of Biochemistry, Purdue University, West Lafayette, Indiana
| | - Elia Farah
- Department of Biochemistry, Purdue University, West Lafayette, Indiana
| | - Nadia M Atallah
- Center for Cancer Research, Purdue University, West Lafayette, Indiana
| | | | - Sanjay Gupta
- Department of Urology, Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Xiaoqi Liu
- Department of Biochemistry, Purdue University, West Lafayette, Indiana. .,Center for Cancer Research, Purdue University, West Lafayette, Indiana
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Rai-Bhogal R, Wong C, Kissoondoyal A, Davidson J, Li H, Crawford DA. Maternal exposure to prostaglandin E 2 modifies expression of Wnt genes in mouse brain - An autism connection. Biochem Biophys Rep 2018; 14:43-53. [PMID: 29872733 PMCID: PMC5986660 DOI: 10.1016/j.bbrep.2018.03.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/28/2018] [Accepted: 03/31/2018] [Indexed: 11/03/2022] Open
Abstract
Prostaglandin E2 (PGE2) is a lipid signaling molecule important for brain development and function. Various genetic and environmental factors can influence the level of PGE2 and increase the risk of developing Autism Spectrum Disorder (ASD). We have previously shown that in neuronal cell lines and mouse brain, PGE2 can interfere with the Wnt canonical pathway, which is essential during early brain development. Higher levels of PGE2 increased Wnt-dependent motility and proliferation of neuroectodermal stem cells, and modified the expression of Wnt genes previously linked to autism disorders. We also recently established a cross-talk between these two pathways in the prenatal mouse brain lacking PGE2 producing enzyme (COX-/-). The current study complements the published data and reveals that PGE2 signaling also converges with the Wnt canonical pathway in the developing mouse brain after maternal exposure to PGE2 at the onset of neurogenesis. We found significant changes in the expression level of Wnt-target genes, Mmp7, Wnt2, and Wnt3a, during prenatal and early postnatal stages. Interestingly, we observed variability in the expression level of these genes between genetically-identical pups within the same pregnancy. Furthermore, we found that all the affected genes have been previously associated with disorders of the central nervous system, including autism. We determined that prenatal exposure to PGE2 affects the Wnt pathway at the level of β-catenin, the major downstream regulator of Wnt-dependent gene transcription. We discuss how these results add new knowledge into the molecular mechanisms by which PGE2 may interfere with neuronal development during critical periods.
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Affiliation(s)
- Ravneet Rai-Bhogal
- Neuroscience Graduate Diploma Program, York University, Toronto, ON, Canada M3J 1P3.,Department of Biology, York University, Toronto, ON, Canada M3J 1P3
| | - Christine Wong
- Neuroscience Graduate Diploma Program, York University, Toronto, ON, Canada M3J 1P3.,School of Kinesiology and Health Science, York University, 4700 Keele Street, Toronto, ON, Canada M3J 1P3
| | - Ashby Kissoondoyal
- Neuroscience Graduate Diploma Program, York University, Toronto, ON, Canada M3J 1P3.,School of Kinesiology and Health Science, York University, 4700 Keele Street, Toronto, ON, Canada M3J 1P3
| | - Jennilee Davidson
- Neuroscience Graduate Diploma Program, York University, Toronto, ON, Canada M3J 1P3.,Department of Biology, York University, Toronto, ON, Canada M3J 1P3
| | - Hongyan Li
- School of Kinesiology and Health Science, York University, 4700 Keele Street, Toronto, ON, Canada M3J 1P3
| | - Dorota A Crawford
- Neuroscience Graduate Diploma Program, York University, Toronto, ON, Canada M3J 1P3.,Department of Biology, York University, Toronto, ON, Canada M3J 1P3.,School of Kinesiology and Health Science, York University, 4700 Keele Street, Toronto, ON, Canada M3J 1P3
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14
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A partnership with the proteasome; the destructive nature of GSK3. Biochem Pharmacol 2017; 147:77-92. [PMID: 29102676 PMCID: PMC5954166 DOI: 10.1016/j.bcp.2017.10.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 10/31/2017] [Indexed: 12/19/2022]
Abstract
Glycogen Synthase Kinase-3 (GSK3) was originally reported as a key enzyme of glucose homeostasis through regulation of the rate of glycogen synthesis. It has subsequently been found to influence most cellular processes, including growth, differentiation and death, as part of its role in modulating response to hormonal, nutritional and cellular stress stimuli. More than 100 protein targets for GSK3 have been proposed although only a small fraction of these have been convincingly validated in physiological cell systems. The effects of GSK3 phosphorylation on substrates include alteration of enzyme activity, protein localisation, protein:protein interaction and protein stability. This latter form of regulation of GSK3 substrates is the focus of this review. There is an ever-growing list of GSK3 substrates that upon phosphorylation are targeted to the beta-transducin repeat containing protein (β-TrCP), thereby allowing ubiquitination of bound protein by cullin-1 and so initiating destruction at the proteasome. We propose the existence of a GSK3-β-TrCP ‘destruction hit-list’ that allows co-ordinated removal (or stabilisation) of a set of proteins with a common physiological purpose, through control of GSK3. We identify 29 proteins where there is relatively strong evidence for regulation by a GSK3-β-TrCP axis and note common features of regulation and pathophysiology. Furthermore, we assess the potential of pre-phosphorylation (priming) of these targets (normally a prerequisite for GSK3 recognition) to provide a second layer of regulation delineated by the priming kinase that allows GSK3 to mark them for destruction. Finally, we discuss whether this knowledge improves options for therapeutic intervention.
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15
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Zhu JY, Li Y, Cao DM, Yang H, Oh E, Bi Y, Zhu S, Wang ZY. The F-box Protein KIB1 Mediates Brassinosteroid-Induced Inactivation and Degradation of GSK3-like Kinases in Arabidopsis. Mol Cell 2017; 66:648-657.e4. [PMID: 28575660 DOI: 10.1016/j.molcel.2017.05.012] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 04/05/2017] [Accepted: 05/10/2017] [Indexed: 11/18/2022]
Abstract
The glycogen synthase kinase-3 (GSK3) family kinases are central cellular regulators highly conserved in all eukaryotes. In Arabidopsis, the GSK3-like kinase BIN2 phosphorylates a range of proteins to control broad developmental processes, and BIN2 is degraded through unknown mechanism upon receptor kinase-mediated brassinosteroid (BR) signaling. Here we identify KIB1 as an F-box E3 ubiquitin ligase that promotes the degradation of BIN2 while blocking its substrate access. Loss-of-function mutations of KIB1 and its homologs abolished BR-induced BIN2 degradation and caused severe BR-insensitive phenotypes. KIB1 directly interacted with BIN2 in a BR-dependent manner and promoted BIN2 ubiquitination in vitro. Expression of an F-box-truncated KIB1 caused BIN2 accumulation but dephosphorylation of its substrate BZR1 and activation of BR responses because KIB1 blocked BIN2 binding to BZR1. Our study demonstrates that KIB1 plays an essential role in BR signaling by inhibiting BIN2 through dual mechanisms of blocking substrate access and promoting degradation.
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Affiliation(s)
- Jia-Ying Zhu
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Yuyao Li
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA
| | - Dong-Mei Cao
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; Institute of Horticulture, Shanxi Academy of Agriculture Sciences, Taiyuan 030031, China
| | - Hongjuan Yang
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA; Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Eunkyoo Oh
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA; Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, South Korea
| | - Yang Bi
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA; Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Shengwei Zhu
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA; Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Zhi-Yong Wang
- Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA.
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16
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Zhao Y, Ge CC, Wang J, Wu XX, Li XM, Li W, Wang SS, Liu T, Hou JZ, Sun H, Fang D, Xie SQ. MEK inhibitor, PD98059, promotes breast cancer cell migration by inducing β-catenin nuclear accumulation. Oncol Rep 2017; 38:3055-3063. [PMID: 29048617 DOI: 10.3892/or.2017.5955] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 07/28/2017] [Indexed: 11/06/2022] Open
Abstract
Abnormal activation of the RAF/MEK/ERK signaling pathway has been observed in breast cancer. Thus, a number of MEK inhibitors have been designed as one treatment option for breast cancer. Although some studies have found that these MEK inhibitors inhibit the growth of a variety of human cancer cells, some trials have shown that the use of MEK inhibitors as a treatment for breast cancer does not adequately improve survival for unknown reasons. In the present study, MEK inhibitor PD98059 was used to evaluate its anticancer effects on human breast cancer MCF-7 and MDA-MB-231 cells and to explore the possible mechanism of action. Our results revealed that MEK inhibitor PD98059 exhibited antiproliferative effects in a dose- and time-dependent manner in MCF-7 and MDA-MB-231 breast cancer cells. Conversely, incubation of MCF-7 and MDA-MB-231 cells with PD98059 promoted their migration. Further investigation disclosed that the enhanced ability of migration promoted by PD98059 was dependent on β-catenin nuclear translocation in the MCF-7 and MDA-MB‑231 cells. Subsequent experiments documented that activation of EGFR signaling induced by PD98059 increased the amount of β-catenin in the nucleus. Taken together, our findings may elucidate a possible mechanism explaining the ineffectiveness of MEK inhibitors in breast cancer treatment and improve our understanding of the role of MEK in cancer.
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Affiliation(s)
- Ying Zhao
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Chao-Chao Ge
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Jun Wang
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Xiao-Xiao Wu
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Xiao-Min Li
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Wei Li
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Sha-Sha Wang
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Tong Liu
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Jiu-Zhou Hou
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Hua Sun
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Dong Fang
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
| | - Song-Qiang Xie
- Institute of Chemical Biology, College of Pharmacy, Henan University, Kaifeng, Henan 475004, P.R. China
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17
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Narendra Talabattula VA, Morgan P, Frech MJ, Uhrmacher AM, Herchenröder O, Pützer BM, Rolfs A, Luo J. Non-canonical pathway induced by Wnt3a regulates β-catenin via Pyk2 in differentiating human neural progenitor cells. Biochem Biophys Res Commun 2017; 491:40-46. [DOI: 10.1016/j.bbrc.2017.07.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Accepted: 07/06/2017] [Indexed: 10/19/2022]
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18
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Wu Q, Wang Y, Qian M, Qiao Y, Zou S, Chen C, Zhang X, Chen Y, Zhao Y, Zhu G, Chen Y, Sun F, Wang J, Pan Q. Sirt1 suppresses Wnt/βCatenin signaling in liver cancer cells by targeting βCatenin in a PKAα-dependent manner. Cell Signal 2017; 37:62-73. [DOI: 10.1016/j.cellsig.2017.06.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 06/01/2017] [Accepted: 06/01/2017] [Indexed: 12/31/2022]
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19
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Loss of Usp9x disrupts cell adhesion, and components of the Wnt and Notch signaling pathways in neural progenitors. Sci Rep 2017; 7:8109. [PMID: 28808228 PMCID: PMC5556043 DOI: 10.1038/s41598-017-05451-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 06/02/2017] [Indexed: 12/31/2022] Open
Abstract
Development of neural progenitors depends upon the coordination of appropriate intrinsic responses to extrinsic signalling pathways. Here we show the deubiquitylating enzyme, Usp9x regulates components of both intrinsic and extrinsic fate determinants. Nestin-cre mediated ablation of Usp9x from embryonic neural progenitors in vivo resulted in a transient disruption of cell adhesion and apical-basal polarity and, an increased number and ectopic localisation of intermediate neural progenitors. In contrast to other adhesion and polarity proteins, levels of β-catenin protein, especially S33/S37/T41 phospho-β-catenin, were markedly increased in Usp9x−/Y embryonic cortices. Loss of Usp9x altered composition of the β-catenin destruction complex possibly impeding degradation of S33/S37/T41 phospho-β-catenin. Pathway analysis of transcriptomic data identified Wnt signalling as significantly affected in Usp9x−/Y embryonic brains. Depletion of Usp9x in cultured human neural progenitors resulted in Wnt-reporter activation. Usp9x also regulated components of the Notch signalling pathway. Usp9x co-localized and associated with both Itch and Numb in embryonic neocortices. Loss of Usp9x led to decreased Itch and Numb levels, and a concomitant increase in levels of the Notch intracellular domain as well as, increased expression of the Notch target gene Hes5. Therefore Usp9x modulates and potentially coordinates multiple fate determinants in neural progenitors.
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20
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Zhu X, Wu X, Cheng J, Liao H, Di X, Li L, Li R, Zhou Y, Zhang X. Dalbinol, a rotenoid from Amorpha fruticosa L., exerts anti-proliferative activity by facilitating β-catenin degradation in hepatocellular carcinoma cells. Oncotarget 2017; 8:47755-47766. [PMID: 28548956 PMCID: PMC5564602 DOI: 10.18632/oncotarget.17766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 04/18/2017] [Indexed: 12/21/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is a highly malignant tumor, and the main cause of treatment failure is malignant proliferation. Aberrations in Wnt/β-catenin signaling are associated with HCC development. Despite the improvements in overall survival made over the past decade from the advent of molecularly targeted therapies, these treatments do not have efficacy in all patients with different pathogeneses. Therefore, there is a demand for novel chemotherapeutic agents for HCC. To this end, we built a natural compound library and screened out a rotenoid named dalbinol from the seeds of Amorpha fruticosa L. Our data demonstrated that dalbinol inhibited the growth of HepG2, HepG2/ADM and Huh7 cells in a concentration-dependent manner. Pharmacological experiments also showed that dalbinol suppressed growth and induced apoptosis in these HCC cell lines in vitro. Furthermore, we found that dalbinol promoted β-catenin degradation, which was mediated by the ubiquitin-proteasome pathway. To summarize, our results illustrate that dalbinol inhibited HCC cell growth by facilitating β-catenin degradation through the ubiquitin-proteasome pathway. Hence, we propose that dalbinol will be a promising agent for the treatment of HCC subtypes with aberrant Wnt/β-catenin pathway activation.
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Affiliation(s)
- Xiaohui Zhu
- Department of Pathophysiology, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Xin Wu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Jing Cheng
- Department of Laboratory Medicine, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, Guangdong, China
| | - Hongbo Liao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Xiaoqing Di
- Department of Pathology, The Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong, China
| | - Lili Li
- Department of Pathophysiology, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Rong Li
- Department of Pathophysiology, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Yanfang Zhou
- Department of Pathophysiology, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
| | - Xiangning Zhang
- Department of Pathophysiology, Guangdong Medical University, Zhanjiang 524023, Guangdong, China
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21
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Pan T, Xu J, Zhu Y. Self-renewal molecular mechanisms of colorectal cancer stem cells. Int J Mol Med 2016; 39:9-20. [PMID: 27909729 PMCID: PMC5179189 DOI: 10.3892/ijmm.2016.2815] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/22/2016] [Indexed: 12/19/2022] Open
Abstract
Colorectal cancer stem cells (CCSCs) represent a small fraction of the colorectal cancer cell population that possess self-renewal and multi-lineage differentiation potential and drive tumorigenicity. Self-renewal is essential for the malignant biological behaviors of colorectal cancer stem cells. While the self-renewal molecular mechanisms of colorectal cancer stem cells are not yet fully understood, the aberrant activation of signaling pathways, such as Wnt, Notch, transforming growth factor-β (TGF-β)/bone morphogenetic protein (BMP) and Hedgehog-Gli (HH-GLI), specific roles mediated by cell surface markers and micro-environmental factors are involved in the regulation of self-renewal. The elucidation of the molecular mechanisms behind self-renewal may lead to the development of novel targeted interventions for the treatment of colorectal cancer.
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Affiliation(s)
- Tianhui Pan
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Jinghong Xu
- Department of Pathology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Yongliang Zhu
- Laboratory of Gastroenterology, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
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22
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Gao C, Chen G, Kuan SF, Zhang DH, Schlaepfer DD, Hu J. FAK/PYK2 promotes the Wnt/β-catenin pathway and intestinal tumorigenesis by phosphorylating GSK3β. eLife 2015; 4. [PMID: 26274564 PMCID: PMC4558782 DOI: 10.7554/elife.10072] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 08/11/2015] [Indexed: 12/16/2022] Open
Abstract
Aberrant activation of Wnt/β-catenin signaling plays an unequivocal role in colorectal cancer, but identification of effective Wnt inhibitors for use in cancer remains a tremendous challenge. New insights into the regulation of this pathway could reveal new therapeutic point of intervention, therefore are greatly needed. Here we report a novel FAK/PYK2/GSK3β(Y216)/β-catenin regulation axis: FAK and PYK2, elevated in adenomas in APC(min/+) mice and in human colorectal cancer tissues, functioned redundantly to promote the Wnt/β-catenin pathway by phosphorylating GSK3β(Y216) to reinforce pathway output-β-catenin accumulation and intestinal tumorigenesis. We previously showed that Wnt-induced β-catenin accumulation requires Wnt-induced GSK3β/β-TrCP interaction; the current study revealed that phosphorylation of GSK3β(Y216) was a molecular determinant of GSK3β recruitment of β-TrCP. Pharmacological inhibition of FAK/PYK2 suppressed adenoma formation in APC(min/+) mice accompanied with reduced intestinal levels of phospho-GSK3β(Y216) and β-catenin, indicating that FAK/PYK2/GSK3β(Y216) axis is critical for the activation of Wnt/β-catenin signaling in APC driven intestinal tumorigenesis.
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Affiliation(s)
- Chenxi Gao
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, United States
| | - Guangming Chen
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, United States
| | - Shih-Fan Kuan
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, United States
| | | | - David D Schlaepfer
- Department of Reproductive Medicine, Moores Cancer Center, University of California, San Diego, San Diego, United States
| | - Jing Hu
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, United States
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23
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REGγ is critical for skin carcinogenesis by modulating the Wnt/β-catenin pathway. Nat Commun 2015; 6:6875. [PMID: 25908095 DOI: 10.1038/ncomms7875] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 03/09/2015] [Indexed: 12/17/2022] Open
Abstract
Here we report that mice deficient for the proteasome activator, REGγ, exhibit a marked resistance to TPA (12-O-tetradecanoyl-phorbol-13-acetate)-induced keratinocyte proliferation, epidermal hyperplasia and onset of papillomas compared with wild-type counterparts. Interestingly, a massive increase of REGγ in skin tissues or cells resulting from TPA induces activation of p38 mitogen-activated protein kinase (MAPK/p38). Blocking p38 MAPK activation prevents REGγ elevation in HaCaT cells with TPA treatment. AP-1, the downstream effector of MAPK/p38, directly binds to the REGγ promoter and activates its transcription in response to TPA stimulation. Furthermore, we find that REGγ activates Wnt/β-catenin signalling by degrading GSK-3β in vitro and in cells, increasing levels of CyclinD1 and c-Myc, the downstream targets of β-catenin. Conversely, MAPK/p38 inactivation or REGγ deletion prevents the increase of cyclinD1 and c-Myc by TPA. This study demonstrates that REGγ acts in skin tumorigenesis mediating MAPK/p38 activation of the Wnt/β-catenin pathway.
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24
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Benary U, Kofahl B, Hecht A, Wolf J. Mathematical modelling suggests a differential impact of β-transducin repeat-containing protein paralogues on Wnt/β-catenin signalling dynamics. FEBS J 2015; 282:1080-96. [PMID: 25601154 DOI: 10.1111/febs.13204] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 12/15/2014] [Accepted: 01/15/2015] [Indexed: 12/12/2022]
Abstract
The Wnt/β-catenin signalling pathway is involved in the regulation of a multitude of cellular processes by controlling the concentration of the transcriptional regulator β-catenin. Proteasomal degradation of β-catenin is mediated by two β-transducin repeat-containing protein paralogues, homologous to Slimb protein (HOS) and F-box/WD repeat-containing protein 1A (FWD1), which are functionally interchangeable and thereby considered to function redundantly in the pathway. HOS and FWD1 are both regulated by Wnt/β-catenin signalling, albeit in opposite directions, thus establishing interlocked negative and positive feedback loops. The functional relevance of the opposite regulation of HOS and FWD1 by Wnt/β-catenin signalling in conjunction with their redundant activities in proteasomal degradation of β-catenin remains unresolved. Using a detailed ordinary differential equation model, we investigated the specific influence of each individual feedback mechanism and their combination on Wnt/β-catenin signal transduction under wild-type and cancerous conditions. We found that, under wild-type conditions, the signalling dynamics are predominantly affected by the HOS feedback as a result of a higher concentration of HOS than FWD1. Transcriptional up-regulation of FWD1 by other signalling pathways reduced the impact of the HOS feedback. The opposite regulation of HOS and FWD1 expression by Wnt/β-catenin signalling allows the FWD1 feedback to be employed as a compensation mechanism against aberrant pathway activation as a result of a reduced HOS concentration. By contrast, the FWD1 feedback provides no protection against aberrant activation in adenomatous polyposis coli protein mutant cancer cells.
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Affiliation(s)
- Uwe Benary
- Mathematical Modelling of Cellular Processes, Max Delbrück Center for Molecular Medicine Berlin-Buch, Germany
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25
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Wong CT, Ahmad E, Li H, Crawford DA. Prostaglandin E2 alters Wnt-dependent migration and proliferation in neuroectodermal stem cells: implications for autism spectrum disorders. Cell Commun Signal 2014; 12:19. [PMID: 24656144 PMCID: PMC4233645 DOI: 10.1186/1478-811x-12-19] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 03/13/2014] [Indexed: 01/30/2023] Open
Abstract
Prostaglandin E2 (PGE2) is a natural lipid-derived molecule that is involved in important physiological functions. Abnormal PGE2 signalling has been associated with pathologies of the nervous system. Previous studies provide evidence for the interaction of PGE2 and canonical Wnt signalling pathways in non-neuronal cells. Since the Wnt pathway is crucial in the development and organization of the brain, the main goal of this study is to determine whether collaboration between these pathways exists in neuronal cell types. We report that PGE2 interacts with canonical Wnt signalling through PKA and PI-3K in neuroectodermal (NE-4C) stem cells. We used time-lapse microscopy to determine that PGE2 increases the final distance from origin, path length travelled, and the average speed of migration in Wnt-activated cells. Furthermore, PGE2 alters distinct cellular phenotypes that are characteristic of Wnt-induced NE-4C cells, which corresponds to the modified splitting behaviour of the cells. We also found that in Wnt-induced cells the level of β-catenin protein was increased and the expression levels of Wnt-target genes (Ctnnb1, Ptgs2, Ccnd1, Mmp9) was significantly upregulated in response to PGE2 treatment. This confirms that PGE2 activated the canonical Wnt signalling pathway. Furthermore, the upregulated genes have been previously associated with ASD. Our findings show, for the first time, evidence for cross-talk between PGE2 and Wnt signalling in neuronal cells, where PKA and PI-3K might act as mediators between the two pathways. Given the importance of PGE2 and Wnt signalling in prenatal development of the nervous system, our study provides insight into how interaction between these two pathways may influence neurodevelopment.
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Affiliation(s)
| | | | | | - Dorota A Crawford
- School of Kinesiology and Health Science, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada.
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