1
|
Ma Y, Fang Z, Zhang H, Qi Y, Mao Y, Zheng J. PDZK1 suppresses TNBC development and sensitizes TNBC cells to erlotinib via the EGFR pathway. Cell Death Dis 2024; 15:199. [PMID: 38604999 PMCID: PMC11009252 DOI: 10.1038/s41419-024-06502-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 01/24/2024] [Accepted: 01/25/2024] [Indexed: 04/13/2024]
Abstract
Epidermal growth factor receptor (EGFR)-targeted drugs (erlotinib, etc.) are used to treat multiple types of tumours. EGFR is highly expressed in most triple-negative breast cancer (TNBC) patients. However, only a small proportion of TNBC patients benefit from EGFR-targeted drugs in clinical trials, and the resistance mechanism is unclear. Here, we found that PDZ domain containing 1 (PDZK1) is downregulated in erlotinib-resistant TNBC cells, suggesting that PDZK1 downregulation is related to erlotinib resistance in TNBC. PDZK1 binds to EGFR. Through this interaction, PDZK1 promotes EGFR degradation by enhancing the binding of EGFR to c-Cbl and inhibits EGFR phosphorylation by hindering EGFR dimerisation. We also found that PDZK1 is specifically downregulated in TNBC tissues and correlated with a poor prognosis in TNBC patients. In vitro and in vivo functional assays showed that PDZK1 suppressed TNBC development. Restoration of EGFR expression or kinase inhibitor treatment reversed the degree of cell malignancy induced by PDZK1 overexpression or knockdown, respectively. PDZK1 overexpression sensitised TNBC cells to erlotinib both in vitro and in vivo. In conclusion, PDZK1 is a significant prognostic factor for TNBC and a potential molecular therapeutic target for reversing erlotinib resistance in TNBC cells.
Collapse
Affiliation(s)
- Yuanzhen Ma
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Zhiyu Fang
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Hongning Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Yijun Qi
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Yuke Mao
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China
| | - Junfang Zheng
- Beijing Key Laboratory of Cancer Invasion and Metastasis Research, Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Capital Medical University, 100069, Beijing, China.
| |
Collapse
|
2
|
Buenaventura RGM, Merlino G, Yu Y. Ez-Metastasizing: The Crucial Roles of Ezrin in Metastasis. Cells 2023; 12:1620. [PMID: 37371090 DOI: 10.3390/cells12121620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Ezrin is the cytoskeletal organizer and functions in the modulation of membrane-cytoskeleton interaction, maintenance of cell shape and structure, and regulation of cell-cell adhesion and movement, as well as cell survival. Ezrin plays a critical role in regulating tumor metastasis through interaction with other binding proteins. Notably, Ezrin has been reported to interact with immune cells, allowing tumor cells to escape immune attack in metastasis. Here, we review the main functions of Ezrin, the mechanisms through which it acts, its role in tumor metastasis, and its potential as a therapeutic target.
Collapse
Affiliation(s)
- Rand Gabriel M Buenaventura
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Glenn Merlino
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Yanlin Yu
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| |
Collapse
|
3
|
Soltan MA, Eldeen MA, Sajer BH, Abdelhameed RFA, Al-Salmi FA, Fayad E, Jafri I, Ahmed HEM, Eid RA, Hassan HM, Al-Shraim M, Negm A, Noreldin AE, Darwish KM. Integration of Chemoinformatics and Multi-Omics Analysis Defines ECT2 as a Potential Target for Cancer Drug Therapy. BIOLOGY 2023; 12:biology12040613. [PMID: 37106813 PMCID: PMC10135641 DOI: 10.3390/biology12040613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/15/2023] [Accepted: 04/04/2023] [Indexed: 04/29/2023]
Abstract
Epithelial cell transforming 2 (ECT2) is a potential oncogene and a number of recent studies have correlated it with the progression of several human cancers. Despite this elevated attention for ECT2 in oncology-related reports, there is no collective study to combine and integrate the expression and oncogenic behavior of ECT2 in a panel of human cancers. The current study started with a differential expression analysis of ECT2 in cancerous versus normal tissue. Following that, the study asked for the correlation between ECT2 upregulation and tumor stage, grade, and metastasis, along with its effect on patient survival. Moreover, the methylation and phosphorylation status of ECT2 in tumor versus normal tissue was assessed, in addition to the investigation of the ECT2 effect on the immune cell infiltration in the tumor microenvironment. The current study revealed that ECT2 was upregulated as mRNA and protein levels in a list of human tumors, a feature that allowed for the increased filtration of myeloid-derived suppressor cells (MDSC) and decreased the level of natural killer T (NKT) cells, which ultimately led to a poor prognosis survival. Lastly, we screened for several drugs that could inhibit ECT2 and act as antitumor agents. Collectively, this study nominated ECT2 as a prognostic and immunological biomarker, with reported inhibitors that represent potential antitumor drugs.
Collapse
Affiliation(s)
- Mohamed A Soltan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Sinai University, Ismailia 41611, Egypt
| | - Muhammad Alaa Eldeen
- Cell Biology, Histology & Genetics Division, Biology Department, Faculty of Science, Zagazig University, Zagazig 44519, Egypt
| | - Bayan H Sajer
- Department of Biological Sciences, College of Science, King Abdulaziz University, Jeddah 80200, Saudi Arabia
| | - Reda F A Abdelhameed
- Department of Pharmacognosy, Faculty of Pharmacy, Galala University, New Galala 43713, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Fawziah A Al-Salmi
- Biology Department, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Eman Fayad
- Department of Biotechnology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Ibrahim Jafri
- Department of Biotechnology, College of Sciences, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | | | - Refaat A Eid
- Pathology Department, College of Medicine, King Khalid University, P.O. Box 62529, Abha 61421, Saudi Arabia
| | - Hesham M Hassan
- Pathology Department, College of Medicine, King Khalid University, P.O. Box 62529, Abha 61421, Saudi Arabia
- Department of Pathology, Faculty of Medicine, Assiut University, Assiut 71515, Egypt
| | - Mubarak Al-Shraim
- Pathology Department, College of Medicine, King Khalid University, P.O. Box 62529, Abha 61421, Saudi Arabia
| | - Amr Negm
- Department of Chemistry, College of Science, King Faisal University, Al-Ahsa 31982, Saudi Arabia
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Ahmed E Noreldin
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22516, Egypt
| | - Khaled M Darwish
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| |
Collapse
|
4
|
Handa O, Goda K, Handa Y, Fukushima S, Osawa M, Murao T, Matsumoto H, Umegaki E, Fujita Y, Nishio K, Shiotani A. PDZK1 induces resistance to apoptosis in esophageal adenocarcinoma cells. Esophagus 2021; 18:655-662. [PMID: 33586076 DOI: 10.1007/s10388-021-00819-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 02/04/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Esophageal cancer is a lethal malignancy with a poor prognosis. The incidence of esophageal adenocarcinoma, which develops from Barrett's esophagus (BE), has recently been increasing. In a previous study, we found that PDZK1 expression is higher in long segment BE compared to that in short-segment BE. However, the function of PDZK1 in the mucosa of BE is unclear. AIMS Clarify the role of PDZK1 in BE mucosa using PDZK1 overexpressed cells. METHODS Human adenocarcinoma-derived OE33 cells were used as a parental cell line and transfected to generate PDZK1 overexpressed OE33 cells (PC cells) or transfected with empty vector as control cells (NC cells). Cell growth of NC and PC cells in 10% fetal bovine serum was evaluated by cell counting. The effect of PDZK1 on proteasome inhibitor (PSI)-induced apoptosis was qualified by fluorescence microscopy and quantified by flow cytometry. Expression of apoptosis-related proteins was evaluated by western blotting. RESULTS There were no significant differences in cell growth between NC and PC cells. PSI significantly increased apoptosis in NC cells, but not in PC cells. In response to PSI, increased levels of cleaved-caspase3 and decreased pro-caspase3 levels were found in NC cells, but not in PC cells. In NC cells, PSI significantly decreased Bcl-2 expression without affecting Bax levels. In contrast, high expression of both Bcl-2 and Bax was observed in PC cells. CONCLUSION Overexpression of PDZK1 protein induces an apoptosis-resistant phenotype in BE cells, which may be a potential therapeutic target.
Collapse
Affiliation(s)
- Osamu Handa
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan.
| | - Kyousuke Goda
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Yukiko Handa
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Shinya Fukushima
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Motoyasu Osawa
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Takahisa Murao
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Hiroshi Matsumoto
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Eiji Umegaki
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| | - Yoshihiko Fujita
- Department of Medical Oncology, Kindai University Faculty of Medicine, 377-2 Ohno-higashi, Osaka-Sayama, Osaka, 589-8511, Japan
| | - Kazuto Nishio
- Department of Medical Oncology, Kindai University Faculty of Medicine, 377-2 Ohno-higashi, Osaka-Sayama, Osaka, 589-8511, Japan
| | - Akiko Shiotani
- Division of Gastroenterology, Department of Internal Medicine, Kawasaki Medical School, 577 Matsushima, Kurashiki-City, Okayama, 701-0192, Japan
| |
Collapse
|
5
|
Frequency Shift of a SH-SAW Biosensor with Glutaraldehyde and 3-Aminopropyltriethoxysilane Functionalized Films for Detection of Epidermal Growth Factor. BIOSENSORS-BASEL 2020; 10:bios10080092. [PMID: 32764513 PMCID: PMC7459952 DOI: 10.3390/bios10080092] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 01/29/2023]
Abstract
The frequency shift of a shear-horizontal surface-acoustic-wave (SH-SAW) biosensor in which the concentration of biomolecule is determined by the amount of its adsorption on the sensing film was studied. Simulation results were compared with experimental results to investigate its sensitivity and to develop a model to estimate the concentration of a cancer-related biomarker antigen epidermal growth factor (EGF) in the sample, with two types of sensing films, 3-aminopropyltriethoxysilane (APTES) and glutaraldehyde. With the concentration of the targeted biomarker varying from 0.2 to 5 ng/mL, a typical exponential relationship was found between the concentration and the frequency shift of the SH-SAW sensor. Measurement results showed a clear response of this immunosensor to the mass-loading effects of the antibody–antigen. The sensitivity of the glutaraldehyde film is greater than that of the APTES film owing to the chemisorption of the antibody. In the simulation, a shift of the SH-SAW resonant frequency due to added mass occurred on applying an incremental surface mass density on the sensing film, while in real applications, the concentration of the targeted biomarker to be absorbed in the sensing film is demanded. An empirical model was proposed to calculate the frequency shift in the simulation of the SH-SAW biosensor, corresponding to the concentration of specific biomolecules absorbed on a specific film. From the semi-empirical model, the sensitivity level is found to be 0.641 and 1.709 kHz/(ng/mL) for APTES and glutaraldehyde sensing films, respectively, at a biomarker concentration of less than 1 ng/mL. The developed method is useful for quickly estimating the frequency shift with respect to the concentration of the target molecules in the simulation for SH-SAW sensors.
Collapse
|
6
|
Luo Q, Wu T, Wu W, Chen G, Luo X, Jiang L, Tao H, Rong M, Kang S, Deng M. The Functional Role of Voltage-Gated Sodium Channel Nav1.5 in Metastatic Breast Cancer. Front Pharmacol 2020; 11:1111. [PMID: 32792949 PMCID: PMC7393602 DOI: 10.3389/fphar.2020.01111] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 07/08/2020] [Indexed: 12/12/2022] Open
Abstract
Voltage-gated sodium channels (VGSCs), which are abnormally expressed in various types of cancers such as breast cancer, prostate cancer, lung cancer, and cervical cancer, are involved in the metastatic process of invasion and migration. Nav1.5 is a pore-forming α subunit of VGSC encoded by SCN5A. Various studies have demonstrated that Nav1.5, often as its neonatal splice form, is highly expressed in metastatic breast cancer cells. Abnormal activation and expression of Nav1.5 trigger a variety of cellular mechanisms, including changing H+ efflux, promoting epithelial-to-mesenchymal transition (EMT) and the expression of cysteine cathepsin, to potentiate the metastasis and invasiveness of breast cancer cells in vitro and in vivo. Here, we systematically review the latest available data on the pro-metastatic effect of Nav1.5 and its underlying mechanisms in breast cancer. We summarize the factors affecting Nav1.5 expression in breast cancer cells, and discuss the potential of Nav1.5 blockers serving as candidates for breast cancer treatment.
Collapse
Affiliation(s)
- Qianxuan Luo
- Department of Biochemistry and Molecular Biology & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Ting Wu
- Department of Biochemistry and Molecular Biology & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Wenfang Wu
- Department of Biochemistry and Molecular Biology & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Gong Chen
- Department of Biochemistry and Molecular Biology & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
| | - Xuan Luo
- Department of Biochemistry and Molecular Biology, Hunan Normal University, Changsha, China
| | - Liping Jiang
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Huai Tao
- Department of Biochemistry and Molecular Biology, Hunan University of Chinese Medicine, Changsha, China
| | - Mingqiang Rong
- Department of Biochemistry and Molecular Biology, Hunan Normal University, Changsha, China
| | - Shuntong Kang
- Department of Biochemistry and Molecular Biology & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Meichun Deng
- Department of Biochemistry and Molecular Biology & Hunan Province Key Laboratory of Basic and Applied Hematology, School of Life Sciences, Central South University, Changsha, China
- Hunan Key Laboratory of Animal Models for Human Diseases & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| |
Collapse
|
7
|
Yang F, Hu M, Chang S, Huang J, Si Y, Wang J, Cheng S, Jiang WG. Alteration in the sensitivity to crizotinib by Na +/H + exchanger regulatory factor 1 is dependent to its subcellular localization in ALK-positive lung cancers. BMC Cancer 2020; 20:202. [PMID: 32164629 PMCID: PMC7068933 DOI: 10.1186/s12885-020-6687-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 02/27/2020] [Indexed: 12/17/2022] Open
Abstract
Background Na+/H+ exchanger regulatory factor 1 (NHERF1) is an important scaffold protein participates in the modulation of a variety of intracellular signal pathways. NHERF1 was able to enhance the effects of chemo-drugs in breast and cervical cancer cells. Anaplastic lymphoma kinase (ALK) fusion mutations are validated molecules targeted therapy in lung cancers, where crizotinib can be used as the specific inhibitor to suppress tumor progression. However, due to the less frequent occurrence of ALK mutations and the complexity for factors to determine drug responses, the genes that could alter crizotinib sensitivity are unclear. Methods Both ALK-translocated and ALK-negative lung adenocarcinoma specimens in tissue sections were collected for immunohistochemistry. The possible mechanisms of NHERF1 and its role in the cell sensitivity to crizotinib were investigated using an ALK-positive and crizotinib-sensitive lung adenocarcinoma cell line H3122. Either a NHERF1 overexpression vector or agents for NHERF1 knockdown was used for crizotinib sensitivity measures, in association with cell viability and apoptosis assays. Results The expression level of NHERF1 in ALK-translocated NSCLC was significantly higher than that in other lung cancer tissues. NHERF1 expression in ALK positive lung cancer cells was regulated by ALK activities, and was in return able to alter the sensitivity to crizotinib. The function of NHERF1 to influence crizotinib sensitivity was depending on its subcellular distribution in cytosol instead of its nucleus localized form. Conclusion Ectopically overexpressed NHERF1 could be a functional protein for consideration to suppress lung cancers. The determination of NHERF1 levels in ALK positive NSCLC tissues might be useful to predict crizotinib resistance, especially by distinguishing cytosolic or nuclear localized NHERF1 for the overexpressed molecules.
Collapse
Affiliation(s)
- Fenglian Yang
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.,Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China
| | - Mu Hu
- Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China.,Department of Thoracic Surgery, Beijing Xuanwu Hospital, Beijing, 100053, P.R. China
| | - Siyuan Chang
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.,Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China
| | - Jing Huang
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.,Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China
| | - Yang Si
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.,Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China
| | - Jinghui Wang
- Department of Medical Oncology, Beijing Chest Hospital, Beijing, 101149, P.R. China
| | - Shan Cheng
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China. .,Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China.
| | - Wen G Jiang
- School of Basic Medical Sciences, Capital Medical University, Beijing, 100069, People's Republic of China.,Beijing Key Laboratory of Cancer & Metastasis Research, Capital Medical University, Beijing, China.,Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Heath Park, Cardiff, CF14 4XN, UK
| |
Collapse
|
8
|
Phosphorylation of NHERF1 S279 and S301 differentially regulates breast cancer cell phenotype and metastatic organotropism. Biochim Biophys Acta Mol Basis Dis 2018; 1865:26-37. [PMID: 30326259 DOI: 10.1016/j.bbadis.2018.10.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/21/2018] [Accepted: 10/11/2018] [Indexed: 02/08/2023]
Abstract
Metastatic cancer cells are highly plastic for the expression of different tumor phenotype hallmarks and organotropism. This plasticity is highly regulated but the dynamics of the signaling processes orchestrating the shift from one cell phenotype and metastatic organ pattern to another are still largely unknown. The scaffolding protein NHERF1 has been shown to regulate the expression of different neoplastic phenotypes through its PDZ domains, which forms the mechanistic basis for metastatic organotropism. This reprogramming activity was postulated to be dependent on its differential phosphorylation patterns. Here, we show that NHERF1 phosphorylation on S279/S301 dictates several tumor phenotypes such as in vivo invasion, NHE1-mediated matrix digestion, growth and vasculogenic mimicry. Remarkably, injecting mice with cells having differential NHERF1 expression and phosphorylation drove a shift from the predominantly lung colonization (WT NHERF1) to predominately bone colonization (double S279A/S301A mutant), indicating that NHERF1 phosphorylation also acts as a signaling switch in metastatic organotropism.
Collapse
|
9
|
Liu H, Zhao WL, Wang JP, Xin BM, Shao RG. EBP50 suppresses the proliferation of MCF-7 human breast cancer cells via promoting Beclin-1/p62-mediated lysosomal degradation of c-Myc. Acta Pharmacol Sin 2018; 39:1347-1358. [PMID: 29283175 DOI: 10.1038/aps.2017.171] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 11/08/2017] [Indexed: 02/06/2023] Open
Abstract
c-Myc, a key activator of cell proliferation and angiogenesis, promotes the development and progression of breast cancer. Ezrin-radixin-moesin-binding phosphoprotein-50 (EBP50) is a multifunctional scaffold protein that suppresses the proliferation of breast cancer cells. In this study we investigated whether the cancer-suppressing effects of EBP50 resulted from its regulation of c-Myc signaling in human breast cancer MCF-7 cells in vitro and in vivo. We first found a significant correlation between EBP50 and c-Myc expression levels in breast cancer tissue, and demonstrated that EBP50 suppressed cell proliferation through decreasing the expression of c-Myc and its downstream proteins cyclin A, E and Cdc25A in MCF-7 cells. We further showed that EBP50 did not regulate c-Myc mRNA expression, but it promoted the degradation of c-Myc through the autophagic lysosomal pathway. Moreover, EBP50 promoted integration between c-Myc and p62, an autophagic cargo protein, triggering the autophagic lysosomal degradation of c-Myc. In EBP50-silenced MCF-7 cells, activation of autophagy by Beclin-1 promoted the degradation of c-Myc and inhibited cell proliferation. These results demonstrate that the EBP50/Beclin-1/p62/c-Myc signaling pathway plays a role in the proliferation in MCF-7 breast cancer cells: EBP50 stimulates the autophagic lysosomal degradation of c-Myc, thereby inhibits the proliferation of MCF-7 cells. Based on our results, promoting the lysosomal degradation of c-Myc might be a promising new strategy for treating breast cancer.
Collapse
|
10
|
Wang Q, Qin Q, Song R, Zhao C, Liu H, Yang Y, Gu S, Zhou D, He J. NHERF1 inhibits beta-catenin-mediated proliferation of cervical cancer cells through suppression of alpha-actinin-4 expression. Cell Death Dis 2018; 9:668. [PMID: 29867145 PMCID: PMC5986762 DOI: 10.1038/s41419-018-0711-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/09/2018] [Accepted: 05/10/2018] [Indexed: 01/15/2023]
Abstract
Cervical cancer is one of the most lethal types of cancer in female. Aberrant activation of Wnt/β-catenin signaling pathway has been found to be involved in cervical cancer development and progression, whereas the underlying molecular mechanisms remain poorly understood. The present study showed that NHERF1 was a novel gene associated with both cell proliferation and Wnt signaling pathway in cervical cancer by analysis of differential gene expression and gene cluster for the cervical cancer specimens from GEO data sets. It was further demonstrated in cellular study that NHERF1 inhibition of cervical cancer cell proliferation through Wnt/β-catenin signaling was dependent on α-actinin-4 (ACTN4) expression. A negative association between NHERF1 expression and levels of ACTN4 and β-catenin was found in mouse xenograft model and cervical cancer specimens. Low levels of NHERF1 in cervical cancer specimens were found to associate with activation of cell proliferation and Wnt/β-catenin signaling by gene set enrichment analysis, and also were an independent predictive factor for worse prognosis of cervical cancer patients by Cox regression analysis. These findings demonstrate that NHERF1 inhibits Wnt signaling-mediated proliferation of cervical cancer via suppression of ACTN4, and NHERF1 downregulation may contribute to the progression of cervical cancer. These findings may also shed some lights for understanding the underlying mechanisms of cisplatin resistance and worse prognosis of HPV-inactive cervical cancer patients.
Collapse
Affiliation(s)
- Qiqi Wang
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China
| | - Qiong Qin
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China.,Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing, China
| | - Ran Song
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China.,Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing, China
| | - Chunjuan Zhao
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China
| | - Hua Liu
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China.,Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing, China
| | - Ying Yang
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China.,Core Facilities Center, Capital Medical University, Beijing, China
| | - Siyu Gu
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China
| | - Deshan Zhou
- Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing, China.,Department of Histology and Embryology, Capital Medical University, Beijing, China
| | - Junqi He
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing, China. .,Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing, China.
| |
Collapse
|
11
|
Zhang X, Liu J, Li Z. Na +/H + exchanger regulatory factor 1 overexpression suppresses the malignant phenotype of MIAPaCa-2 pancreatic adenocarcinoma cells by downregulating Akt phosphorylation. Oncol Lett 2018; 15:7725-7729. [PMID: 29725468 PMCID: PMC5920473 DOI: 10.3892/ol.2018.8289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 10/26/2017] [Indexed: 01/18/2023] Open
Abstract
Na+/H+ exchanger regulatory factor 1 (NHERF1) is reported to be associated with the development of numerous types of tumor; however, its effects on the metastasis of pancreatic adenocarcinoma are not fully understood. In the present study, it was revealed that the expression level of NHERF1 in pancreatic adenocarcinoma is decreased compared with normal pancreatic tissue based on the analysis of a protein expression database. The present study was undertaken in order to investigate the potential effects of NHERF1 overexpression on the malignant phenotype of MIAPaCa-2 pancreatic adenocarcinoma cells. NHERF1 was stably overexpressed in this cell line, and Cell Counting Kit-8, wound healing and Transwell assays were used to detect the proliferative and migratory abilities of the cells. NHERF1 overexpression suppressed proliferation in the MIAPaCa-2 cell line compared with empty vector-transfected (negative control) cells. Additionally, NHERF1 overexpression significantly inhibited the migration of MIAPaCa-2 cells. The results of a western blot analysis identified that NHERF1 overexpression markedly decreased the expression of phosphorylated-protein kinase B (p-Akt), while no significant difference was observed between untransfected and negative control cells. Taken together, these results suggested that NHERF1 may be able to inhibit the proliferation and migration and alter the malignant phenotype of pancreatic adenocarcinoma cells via reduction of p-Akt levels. These findings indicate a potential novel approach to the treatment of pancreatic adenocarcinoma.
Collapse
Affiliation(s)
- Xibo Zhang
- Department of Hepatopancreatobiliary Surgery, Tianjin Nankai Hospital, Tianjin 300100, P.R. China
| | - Junjian Liu
- Department of Hepatopancreatobiliary Surgery, Tianjin Nankai Hospital, Tianjin 300100, P.R. China
| | - Zhonglian Li
- Department of Hepatopancreatobiliary Surgery, Tianjin Nankai Hospital, Tianjin 300100, P.R. China
| |
Collapse
|
12
|
Centonze M, Saponaro C, Mangia A. NHERF1 Between Promises and Hopes: Overview on Cancer and Prospective Openings. Transl Oncol 2018; 11:374-390. [PMID: 29455084 PMCID: PMC5852411 DOI: 10.1016/j.tranon.2018.01.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/02/2018] [Accepted: 01/05/2018] [Indexed: 02/07/2023] Open
Abstract
Na+/H+ exchanger regulatory factor 1 (NHERF1) is a scaffold protein, with two tandem PDZ domains and a carboxyl-terminal ezrin-binding (EB) region. This particular sticky structure is responsible for its interaction with different molecules to form multi-complexes that have a pivotal role in a lot of diseases. In particular, its involvement during carcinogenesis and cancer progression has been deeply analyzed in different tumors. The role of NHERF1 is not unique in cancer; its activity is connected to its subcellular localization. The literature data suggest that NHERF1 could be a new prognostic/predictive biomarker from breast cancer to hematological cancers. Furthermore, the high potential of this molecule as therapeutical target in different carcinomas is a new challenge for precision medicine. These evidences are part of a future view to improving patient clinical management, which should allow different tumor phenotypes to be treated with tailored therapies. This article reviews the biology of NHERF1, its engagement in different signal pathways and its involvement in different cancers, with a specific focus on breast cancer. It also considers NHERF1 potential role during inflammation related to most human cancers, designating new perspectives in the study of this "Janus-like" protein.
Collapse
Affiliation(s)
- Matteo Centonze
- Functional Biomorphology Laboratory, IRCCS-Istituto Tumori "Giovanni Paolo II", Bari, Italy
| | - Concetta Saponaro
- Functional Biomorphology Laboratory, IRCCS-Istituto Tumori "Giovanni Paolo II", Bari, Italy
| | - Anita Mangia
- Functional Biomorphology Laboratory, IRCCS-Istituto Tumori "Giovanni Paolo II", Bari, Italy.
| |
Collapse
|
13
|
Regulation of ErbB2 localization and function in breast cancer cells by ERM proteins. Oncotarget 2018; 7:25443-60. [PMID: 27029001 PMCID: PMC5041916 DOI: 10.18632/oncotarget.8327] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 03/10/2016] [Indexed: 12/20/2022] Open
Abstract
The ERM protein family is implicated in processes such as signal transduction, protein trafficking, cell proliferation and migration. Consequently, dysregulation of ERM proteins has been described to correlate with carcinogenesis of different cancer types. However, the underlying mechanisms are poorly understood. Here, we demonstrate a novel functional interaction between ERM proteins and the ErbB2 receptor tyrosine kinase in breast cancer cells. We show that the ERM proteins ezrin and radixin are associated with ErbB2 receptors at the plasma membrane, and depletion or functional inhibition of ERM proteins destabilizes the interaction of ErbB2 with ErbB3, Hsp90 and Ebp50. Accompanied by the dissociation of this protein complex, binding of ErbB2 to the ubiquitin-ligase c-Cbl is increased, and ErbB2 becomes dephosphorylated, ubiquitinated and internalized. Furthermore, signaling via Akt- and Erk-mediated pathways is impaired upon ERM inhibition. Finally, interference with ERM functionality leads to receptor degradation and reduced cellular levels of ErbB2 and ErbB3 receptors in breast cancer cells.
Collapse
|
14
|
Ma Q, Wu X, Wu J, Wu H, Xiao Y, Wang L, Liang Z, Liu T. PDZ-containing 1 acts as a suppressor of pancreatic cancer by regulating PTEN phosphorylation. Oncotarget 2017; 8:72893-72909. [PMID: 29069834 PMCID: PMC5641177 DOI: 10.18632/oncotarget.20552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Accepted: 07/31/2017] [Indexed: 01/26/2023] Open
Abstract
Phosphorylation is a recently established cause of phosphatase and tensin homolog (PTEN) gene inactivation, which leads to defect tumour-suppressor function. In pancreatic cancer, this phenomenon has not been reported. Based on database and clinical sample analyses, we found that PTEN phosphorylation occurs in pancreatic ductal adenocarcinoma patient tissues and cell lines, and we aimed to find a method for dephosphorylation. PDZ-containing 1 (PDZK1), a tumour-associated protein that shares its PDZ-binding sequence with the carboxyl-terminal domain of PTEN, was significantly down-regulated in pancreatic cancer as compared to adjacent non-tumour tissues. In vitro, PDZK1 overexpression reversed the proliferation and migration abilities of pancreatic cancer cells and led to significantly decreased PTEN phosphorylation and AKT phosphorylation by interacting with wild-type PTEN. In addition, a transcription factor-activation assay supported that PDZK1 overexpression enhanced the anti-oncogene function of PTEN by regulating the activities of its downstream transcription factors, including p53, NF-κB, and FOXO1. In vivo, nude mice stably over-expressing PDZK1 had lower tumour weights and volumes and showed significantly down-regulated PTEN phosphorylation in xenograft tumour tissues as compared to the control group. Moreover, low PDZK1 expression strongly correlated with advanced stage and poor prognosis of patients with pancreatic ductal adenocarcinoma. In conclusion, our study elucidated the tumour-suppressor role of PDZK1 in pancreatic cancer through down-regulating PTEN phosphorylation, and established PDZK1 as a potential novel prognostic marker for pancreatic cancer.
Collapse
Affiliation(s)
- Qiang Ma
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| | - Xiuxiu Wu
- Department of Respiratory Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| | - Jing Wu
- Department of Medical Imaging, Beijing Huairou Hospital, University of Chinese Academy of Science, Beijing, 101400, P.R. China
| | - Huanwen Wu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| | - Ying Xiao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| | - Lili Wang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| | - Zhiyong Liang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| | - Tonghua Liu
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, P. R. China
| |
Collapse
|
15
|
Wang Y, Peng Z, Meng R, Tao T, Wang Q, Zhao C, Liu H, Song R, Zheng J, Qin Q, He J. NHERF1 inhibits proliferation of triple-negative breast cancer cells by suppressing GPER signaling. Oncol Rep 2017; 38:221-228. [PMID: 28535016 DOI: 10.3892/or.2017.5649] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 04/19/2017] [Indexed: 11/06/2022] Open
Abstract
G protein-coupled estrogen receptor (GPER) signaling is activated in triple-negative breast cancer (TNBC); however, the detailed mechanisms of its regulation remain unclear. The present study aimed to elucidate the molecular mechanisms involved in GPER activation in TNBC. In MDA-MB-231 cells, a TNBC cell line, NHERF1 interaction with GPER was verified by co-immunoprecipitation and immunofluorescent staining assays. Overexpression of NHERF1 in MDA-MB-231 cells inhibited GPER-mediated proliferation and phosphorylation of ERK1/2 and Akt. Furthermore, NHERF1 expression levels were negatively correlated with the gene signatures of GPER activation, ERK1/2 and Akt signaling, and cell proliferation in early stage of TNBC tumors from the TCGA data set. Taken together, NHERF1 inhibited the activation of GPER-mediated signaling and suppressed the proliferation of triple-negative breast cancer cells. Loss of NHERF1 expression may play a pivotal role in the early stage of TNBC carcinogenesis.
Collapse
Affiliation(s)
- Yan Wang
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Zhiqiang Peng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Ran Meng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Tao Tao
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Qiqi Wang
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Chunjuan Zhao
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Hua Liu
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Ran Song
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Junfang Zheng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Qiong Qin
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Junqi He
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| |
Collapse
|
16
|
Feng D, Xiong Y, Peng Z, Ma Q, Tao T, Liu H, Liang J, Wei Z, Zheng J, Wang L, Zhang H. Reduced EBP50 expression levels are correlated with unfavorable clinicopathological features of extrahepatic bile duct carcinoma and promote the proliferation and migration of QBC939 cells. Oncol Lett 2017; 13:2758-2764. [PMID: 28454463 DOI: 10.3892/ol.2017.5789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 10/27/2016] [Indexed: 12/21/2022] Open
Abstract
The present study aimed to clarify the association between ezrin-radixin-moesin-binding phosphoprotein-50 (EBP50) expression level and the tumor phenotype and clinicopathological features of extrahepatic bile duct carcinoma. Tissue samples from patients with extrahepatic bile duct carcinoma (54 cases) and patients with normal bile duct epithelia from gallbladder of cholecystitis (20 cases) were collected, and immunohistochemical staining was used to detect the expression levels of EBP50 in these tissues. In addition, small interfering (si)RNA-EBP50 was used to knock down the expression of EBP50 in the QBC939 human cholangiocarcinoma (CC) cell line. The effect of EBP50 expression on QBC939 cell proliferation and migration was analyzed using the Cell Counting kit-8 and wound healing assays, respectively. EBP50 expression was significantly downregulated in CC tissue samples (P<0.01), with low EBP50 expression levels positively correlated with a high pathological stage and a poor differentiation degree (P<0.01 and P<0.001, respectively). EBP50 expression in QBC939 cells was knocked down by ≤80% using siRNA-EBP50, and EBP50 knockdown significantly promoted QBC939 cell proliferation, as compared with the vector control cells (P=0.04). EBP50 knockdown also significantly enhanced the wound healing ability of QBC939 cells (P=0.02). These results demonstrated that EBP50 expression levels are significantly correlated with a malignant phenotype in patients with CC, and decreased expression levels of EBP50 may promote CC cell proliferation and migration. These findings provide insight into novel potential diagnostic and therapeutic approaches for patients with CC.
Collapse
Affiliation(s)
- Duiping Feng
- Department of Radiology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China.,Beijing Key Laboratory for Tumor Invasion and Metastasis, Cancer Institute of Capital Medical University, Beijing 100069, P.R. China
| | - Ying Xiong
- Beijing Key Laboratory for Tumor Invasion and Metastasis, Cancer Institute of Capital Medical University, Beijing 100069, P.R. China.,Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Zhiqiang Peng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Qiang Ma
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Tao Tao
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Hua Liu
- Beijing Key Laboratory for Tumor Invasion and Metastasis, Cancer Institute of Capital Medical University, Beijing 100069, P.R. China.,Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Jianfang Liang
- Department of Pathology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Zhigang Wei
- Department of General Surgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| | - Junfang Zheng
- Beijing Key Laboratory for Tumor Invasion and Metastasis, Cancer Institute of Capital Medical University, Beijing 100069, P.R. China.,Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Lei Wang
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, P.R. China
| | - Hui Zhang
- Department of Radiology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
| |
Collapse
|
17
|
White-Al Habeeb NMA. Downregulation of PDZ Domain Containing 1 (PDZK1) is a Poor Prognostic Marker for Clear Cell Renal Cell Carcinoma. EBioMedicine 2017; 16:20-21. [PMID: 28109828 PMCID: PMC5474429 DOI: 10.1016/j.ebiom.2017.01.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 01/09/2017] [Indexed: 11/29/2022] Open
|
18
|
Vaquero J, Nguyen Ho-Bouldoires TH, Clapéron A, Fouassier L. Role of the PDZ-scaffold protein NHERF1/EBP50 in cancer biology: from signaling regulation to clinical relevance. Oncogene 2017; 36:3067-3079. [PMID: 28068322 DOI: 10.1038/onc.2016.462] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 10/26/2016] [Accepted: 10/31/2016] [Indexed: 12/14/2022]
Abstract
The transmission of cellular information requires fine and subtle regulation of proteins that need to interact in a coordinated and specific way to form efficient signaling networks. The spatial and temporal coordination relies on scaffold proteins. Thanks to protein interaction domains such as PDZ domains, scaffold proteins organize multiprotein complexes enabling the proper transmission of cellular information through intracellular networks. NHERF1/EBP50 is a PDZ-scaffold protein that was initially identified as an organizer and regulator of transporters and channels at the apical side of epithelia through actin-binding ezrin-moesin-radixin proteins. Since, NHERF1/EBP50 has emerged as a major regulator of cancer signaling network by assembling cancer-related proteins. The PDZ-scaffold EBP50 carries either anti-tumor or pro-tumor functions, two antinomic functions dictated by EBP50 expression or subcellular localization. The dual function of NHERF1/EBP50 encompasses the regulation of several major signaling pathways engaged in cancer, including the receptor tyrosine kinases PDGFR and EGFR, PI3K/PTEN/AKT and Wnt-β-catenin pathways.
Collapse
Affiliation(s)
- J Vaquero
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint-Antoine (CRSA), Paris, France.,FONDATION ARC, Villejuif, France
| | - T H Nguyen Ho-Bouldoires
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint-Antoine (CRSA), Paris, France.,FONDATION ARC, Villejuif, France
| | - A Clapéron
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint-Antoine (CRSA), Paris, France
| | - L Fouassier
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint-Antoine (CRSA), Paris, France
| |
Collapse
|
19
|
Zheng J, Wang L, Peng Z, Yang Y, Feng D, He J. Low level of PDZ domain containing 1 (PDZK1) predicts poor clinical outcome in patients with clear cell renal cell carcinoma. EBioMedicine 2016; 15:62-72. [PMID: 27993630 PMCID: PMC5233812 DOI: 10.1016/j.ebiom.2016.12.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/06/2016] [Accepted: 12/06/2016] [Indexed: 12/29/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is the most lethal neoplasm of the urologic system. Clinical therapeutic effect varies greatly between individual ccRCC patients, so there is an urgent need to develop prognostic molecular biomarkers to help clinicians identify patients in need of early aggressive management. In this study, samples from primary ccRCC tumor and their corresponding nontumor adjacent tissues (n=18) were analyzed by quantitative proteomic assay. Proteins downregulated in tumors were studied by GO and KEGG pathways enrichment analyses. Six proteins were found both downregulated and annotated with cell proliferation in ccRCC patients. Of these proteins, PDZK1 and FABP1 were also involved in the lipid metabolism pathway. The downregulation of PDZK1 was further validated in TCGA_KIRC dataset (n=532) and independent set (n=202). PDZK1 could discriminate recurrence, metastasis and prognosis between ccRCC patients. Low level of PDZK1 in both mRNA and protein was associated with reduced overall survival (OS) and disease-free survival (DFS) in two independent sets. In univariate and multivariate analyses, PDZK1 was defined as an independent prognostic factor for both OS and DFS. These findings indicated that low level of PDZK1 could predict poor clinical outcome in patients with ccRCC.
Collapse
Affiliation(s)
- Junfang Zheng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing International Cooperation Base for Science and Technology on China-UK Cancer Research, Beijing 100069, China
| | - Lei Wang
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Zhiqiang Peng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, China
| | - Ying Yang
- Core Facilities Center, Capital Medical University, Beijing 100069, China
| | - Duiping Feng
- Department of Radiology, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - Junqi He
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory for Tumor Invasion and Metastasis, Beijing International Cooperation Base for Science and Technology on China-UK Cancer Research, Beijing 100069, China.
| |
Collapse
|
20
|
Liu H, Ma Y, He HW, Wang JP, Jiang JD, Shao RG. SLC9A3R1 stimulates autophagy via BECN1 stabilization in breast cancer cells. Autophagy 2016. [PMID: 26218645 DOI: 10.1080/15548627.2015.1074372] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
Abstract
Autophagy, a self-catabolic process, has been found to be involved in abrogating the proliferation and metastasis of breast cancer. SLC9A3R1 (solute carrier family 9, subfamily A [NHE3, cation proton antiporter 3], member 3 regulator 1), a multifunctional scaffold protein, is involved in suppressing breast cancer cells proliferation and the SLC9A3R1-related signaling pathway regulates the activation of autophagy processes. However, the precise regulatory mechanism and signaling pathway of SLC9A3R1 in the regulation of autophagy processes in breast cancer cells remains unknown. Here, we report that the stability of BECN1, the major component of the autophagic core lipid kinase complex, is augmented in SLC9A3R1-overexpressing breast cancer MDA-MB-231 cells, subsequently stimulating autophagy by attenuating the interaction between BECN1 and BCL2. Initially, we found that SLC9A3R1 partially stimulated autophagy through the PTEN-PI3K-AKT1 signaling cascade in MDA-MB-231 cells. SLC9A3R1 then attenuated the interaction between BECN1 and BCL2 to stimulate the autophagic core lipid kinase complex. Further findings revealed that SLC9A3R1 bound to BECN1 and subsequently blocked ubiquitin-dependent BECN1 degradation. And the deletion of the C-terminal domain of SLC9A3R1 resulted in significantly reduced binding to BECN1. Moreover, the lack of C-terminal of SLC9A3R1 neither reduced the ubiquitination of BECN1 nor induced autophagy in breast cancer cells. The decrease in BECN1 degradation induced by SLC9A3R1 resulted in the activity of autophagy stimulation in breast cancer cells. These findings indicate that the SLC9A3R1-BECN1 signaling pathway participates in the activation of autophagy processes in breast cancer cells.
Collapse
Affiliation(s)
- Hong Liu
- a Department of Oncology ; Institute of Medicinal Biotechnology; Peking Union Medical College; Chinese Academy of Medical Sciences ; Beijing , China
| | - Yan Ma
- a Department of Oncology ; Institute of Medicinal Biotechnology; Peking Union Medical College; Chinese Academy of Medical Sciences ; Beijing , China
| | - Hong-Wei He
- a Department of Oncology ; Institute of Medicinal Biotechnology; Peking Union Medical College; Chinese Academy of Medical Sciences ; Beijing , China
| | - Jia-Ping Wang
- b China Astronaut Research and Training Center ; Beijing , China
| | - Jian-Dong Jiang
- a Department of Oncology ; Institute of Medicinal Biotechnology; Peking Union Medical College; Chinese Academy of Medical Sciences ; Beijing , China
| | - Rong-Guang Shao
- a Department of Oncology ; Institute of Medicinal Biotechnology; Peking Union Medical College; Chinese Academy of Medical Sciences ; Beijing , China
| |
Collapse
|
21
|
Peng Z, Wang Q, Zhang Y, He J, Zheng J. EBP50 interacts with EGFR and regulates EGFR signaling to affect the prognosis of cervical cancer patients. Int J Oncol 2016; 49:1737-45. [DOI: 10.3892/ijo.2016.3655] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 07/22/2016] [Indexed: 11/06/2022] Open
|
22
|
Tuettenberg A, Hahn SA, Mazur J, Gerhold-Ay A, Scholma J, Marg I, Ulges A, Satoh K, Bopp T, Joore J, Jonuleit H. Kinome Profiling of Regulatory T Cells: A Closer Look into a Complex Intracellular Network. PLoS One 2016; 11:e0149193. [PMID: 26881744 PMCID: PMC4755507 DOI: 10.1371/journal.pone.0149193] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Accepted: 01/28/2016] [Indexed: 01/02/2023] Open
Abstract
Regulatory T cells (Treg) are essential for T cell homeostasis and maintenance of peripheral tolerance. They prevent activation of auto-reactive T effector cells (Teff) in the context of autoimmunity and allergy. Otherwise, Treg also inhibit effective immune responses against tumors. Besides a number of Treg-associated molecules such as Foxp3, CTLA-4 or GARP, known to play critical roles in Treg differentiation, activation and function, the involvement of additional regulatory elements is suggested. Herein, kinase activities seem to play an important role in Treg fine tuning. Nevertheless, our knowledge regarding the complex intracellular signaling pathways controlling phenotype and function of Treg is still limited and based on single kinase cascades so far. To gain a more comprehensive insight into the pathways determining Treg function we performed kinome profiling using a phosphorylation-based kinome array in human Treg at different activation stages compared to Teff. Here we have determined intriguing quantitative differences in both populations. Resting and activated Treg showed an altered pattern of CD28-dependent kinases as well as of those involved in cell cycle progression. Additionally, significant up-regulation of distinct kinases such as EGFR or CK2 in activated Treg but not in Teff not only resemble data we obtained in previous studies in the murine system but also suggest that those specific molecular activation patterns can be used for definition of the activation and functional state of human Treg. Taken together, detailed investigation of kinome profiles opens the possibility to identify novel molecular mechanisms for a better understanding of Treg biology but also for development of effective immunotherapies against unwanted T cell responses in allergy, autoimmunity and cancer.
Collapse
Affiliation(s)
- Andrea Tuettenberg
- Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
- * E-mail:
| | - Susanne A. Hahn
- Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Johanna Mazur
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Aslihan Gerhold-Ay
- Institute of Medical Biostatistics, Epidemiology and Informatics (IMBEI), University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Jetse Scholma
- Department of Developmental Bioengineering, University of Twente, Enschede, the Netherlands
| | - Iris Marg
- Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Alexander Ulges
- Institute for Immunology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Kazuki Satoh
- Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Tobias Bopp
- Institute for Immunology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| | - Jos Joore
- Pepscope BV, Utrecht, The Netherlands
| | - Helmut Jonuleit
- Department of Dermatology, University Medical Center Mainz, Johannes Gutenberg-University, Mainz, Germany
| |
Collapse
|
23
|
Ma Q, Jiao Y, Hao Y, Yan S, Lyu N, Gao H, Li D, Liu Q, Zheng J, Song N. Targeting of NHERF1 through RNA interference inhibits the proliferation and migration of metastatic prostate cancer cells. Oncol Lett 2015; 11:1149-1154. [PMID: 26893710 DOI: 10.3892/ol.2015.4007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Accepted: 05/08/2015] [Indexed: 12/23/2022] Open
Abstract
The present study aimed to investigate the effects of Na+/H+ exchanger regulatory factor 1 (NHERF1) gene knockdown, using short-hairpin RNA (shRNA), on the malignant behaviors of prostate cancer cells. A pSuper.puro NHERF1 shRNA vector was transfected into PC-3M prostate cancer cells using Lipofectamine 2000. Stable cell lines were obtained and NHERF1 knockdown was verified through western blot analysis. MTT assays were then used to measure PC-3M cell proliferation; in addition, cell migration was assessed using a wound healing assay. Flow cytometry was employed in order to determine the effects of NHERF1 knockdown on apoptosis. Expression levels of apoptotic pathway proteins B cell lymphoma-2 (Bcl-2) and Bcl-2-associated X protein were then determined by western blot analysis. The results demonstrated that shRNA knockdown of NHERF1 significantly suppressed the proliferation of PC-3M cells by >50%. In addition, knockdown of NHERF1 significantly inhibited the migration of PC-3M cells. PC-3M cells harboring NHERF1 shRNA exhibited significantly increased apoptosis, with an ~4-fold increase compared with that of the parental PC-3M cells and cells transfected with an empty vector. Furthermore, the results revealed that knockdown of NHERF1 reduced the protein expression of Bcl-2, although the expression of Bax was unaltered. In conclusion, NHERF1 knockdown using shRNA inhibited the proliferation and migration of PC-3M cells and promoted apoptosis, highlighting the role of NHERF1 in prostate cancer progression.
Collapse
Affiliation(s)
- Qiang Ma
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, P.R. China
| | - Yanna Jiao
- Department of Genetics, National Research Institute for Family Planning, Beijing 100081, P.R. China
| | - Yumei Hao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, P.R. China
| | - Shanshan Yan
- Department of Molecular Biology, Institute of Medical Biology, Peking Union Medical College and Chinese Academy of Medical Science, Kunming, Yunnan 650000, P.R. China
| | - Nenan Lyu
- Department of Gynecologic Oncology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, P.R. China
| | - Honglin Gao
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, P.R. China
| | - Deguan Li
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, P.R. China
| | - Qiang Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, P.R. China
| | - Junfang Zheng
- Department of Biochemistry and Molecular Biology, Capital Medical University, Beijing 100069, P.R. China
| | - Naling Song
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Peking Union Medical College and Chinese Academy of Medical Science, Tianjin 300192, P.R. China
| |
Collapse
|
24
|
Cardone RA, Greco MR, Zeeberg K, Zaccagnino A, Saccomano M, Bellizzi A, Bruns P, Menga M, Pilarsky C, Schwab A, Alves F, Kalthoff H, Casavola V, Reshkin SJ. A novel NHE1-centered signaling cassette drives epidermal growth factor receptor-dependent pancreatic tumor metastasis and is a target for combination therapy. Neoplasia 2015; 17:155-66. [PMID: 25748234 PMCID: PMC4351296 DOI: 10.1016/j.neo.2014.12.003] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 12/04/2014] [Accepted: 12/04/2014] [Indexed: 12/21/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal cancers principally because of early invasion and metastasis. The epidermal growth factor receptor (EGFR) is essential for PDAC development even in the presence of Kras, but its inhibition with erlotinib gives only a modest clinical response, making the discovery of novel EGFR targets of critical interest. Here, we revealed by mining a human pancreatic gene expression database that the metastasis promoter Na+/H+ exchanger (NHE1) associates with the EGFR in PDAC. In human PDAC cell lines, we confirmed that NHE1 drives both basal and EGF-stimulated three-dimensional growth and early invasion via invadopodial extracellular matrix digestion. EGF promoted the complexing of EGFR with NHE1 via the scaffolding protein Na +/H + exchanger regulatory factor 1, engaging EGFR in a negative transregulatory loop that controls the extent and duration of EGFR oncogenic signaling and stimulates NHE1. The specificity of NHE1 for growth or invasion depends on the segregation of the transient EGFR/Na +/H + exchanger regulatory factor 1/NHE1 signaling complex into dimeric subcomplexes in different lipid raftlike membrane domains. This signaling complex was also found in tumors developed in orthotopic mice. Importantly, the specific NHE1 inhibitor cariporide reduced both three-dimensional growth and invasion independently of PDAC subtype and synergistically sensitized these behaviors to low doses of erlotinib.
Collapse
Affiliation(s)
- Rosa Angela Cardone
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy
| | - Maria Raffaella Greco
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy
| | - Katrine Zeeberg
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy
| | - Angela Zaccagnino
- Institute for Experimental Cancer Research, Christian Albrechts University, Arnold-Heller-Str. 7, D-24105, Kiel, Germany
| | - Mara Saccomano
- Max-Planck-Institute of Experimental Medicine, Hermann-Rein-Str. 3, D-37075, Gottingen, Germany
| | - Antonia Bellizzi
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy
| | - Philipp Bruns
- Institute of Physiology II, University of Muenster, Robert-Koch-Str. 27 b, D-48149, Muenster, Germany
| | - Marta Menga
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy
| | - Christian Pilarsky
- University Hospital Carl Gustav Carus, Technical University of Dresden, TU Dresden, Fetscherstraße 74, D-01307, Dresden, Germany
| | - Albrecht Schwab
- Institute of Physiology II, University of Muenster, Robert-Koch-Str. 27 b, D-48149, Muenster, Germany
| | - Frauke Alves
- Max-Planck-Institute of Experimental Medicine, Hermann-Rein-Str. 3, D-37075, Gottingen, Germany
| | - Holger Kalthoff
- Institute for Experimental Cancer Research, Christian Albrechts University, Arnold-Heller-Str. 7, D-24105, Kiel, Germany
| | - Valeria Casavola
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy; Centre of Excellence in Comparative Genomics (CEGBA), Bari, Italy
| | - Stephan Joel Reshkin
- Department of Biosciences, Biotechnology and Biopharmaceutics, University of Bari, Via E. Orabona 4, 70125, Bari, Italy; Centre of Excellence in Comparative Genomics (CEGBA), Bari, Italy.
| |
Collapse
|
25
|
ZHENG JUNFANG, DAI YUANPING, YANG ZHIYU, YANG LONGYAN, PENG ZHIQIANG, MENG RAN, XIONG YING, HE JUNQI. Ezrin-radixin-moesin-binding phosphoprotein-50 regulates EGF-induced AKT activation through interaction with EGFR and PTEN. Oncol Rep 2015; 35:530-7. [DOI: 10.3892/or.2015.4375] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 09/04/2015] [Indexed: 11/06/2022] Open
|
26
|
Insulin-like growth factor and epidermal growth factor signaling in breast cancer cell growth: focus on endocrine resistant disease. Anal Cell Pathol (Amst) 2015; 2015:975495. [PMID: 26258011 PMCID: PMC4518167 DOI: 10.1155/2015/975495] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 07/05/2015] [Indexed: 12/27/2022] Open
Abstract
Breast cancer is the most common type of cancer for women worldwide with a lifetime risk amounting to a staggering total of 10%. It is well established that the endogenous synthesis of insulin-like growth factor (IGF) and epidermal growth factor (EGF) polypeptide growth factors are closely correlated to malignant transformation and all the steps of the breast cancer metastatic cascade. Numerous studies have demonstrated that both estrogens and growth factors stimulate the proliferation of steroid-dependent tumor cells, and that the interaction between these signaling pathways occurs at several levels. Importantly, the majority of breast cancer cases are estrogen receptor- (ER-) positive which have a more favorable prognosis and pattern of recurrence with endocrine therapy being the backbone of treatment. Unfortunately, the majority of patients progress to endocrine therapy resistant disease (acquired resistance) whereas a proportion of patients may fail to respond to initial therapy (de novo resistance). The IGF-I and EGF downstream signaling pathways are closely involved in the process of progression to therapy resistant disease. Modifications in the bioavailability of these growth factors contribute critically to disease progression. In the present review therefore, we will discuss in depth how IGF and EGF signaling participate in breast cancer pathogenesis and progression to endocrine resistant disease.
Collapse
|
27
|
Starok M, Preira P, Vayssade M, Haupt K, Salomé L, Rossi C. EGFR Inhibition by Curcumin in Cancer Cells: A Dual Mode of Action. Biomacromolecules 2015; 16:1634-42. [PMID: 25893361 DOI: 10.1021/acs.biomac.5b00229] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Epidermal Growth Factor Receptor (EGFR) is an important target of anticancer therapy. Nowadays, the search for new molecules inhibiting this receptor is turning toward natural substances. One of the most promising natural compounds that have shown an anti-EGFR activity is curcumin, a polyphenol found in turmeric. Its effect on the receptor kinase activity and on the receptor autophosphorylation has been already described, but the mechanism of how curcumin interacts with EGFR is not fully elucidated. We demonstrate that the mode of action of curcumin is dual. This polyphenol is able to inhibit directly but partially the enzymatic activity of the EGFR intracellular domain. The present work shows that curcumin also influences the cell membrane environment of EGFR. Using biomimetic membrane models, we show that curcumin insertion into the lipid bilayer leads to its rigidification. Single particle tracking analyses performed in the membrane of A431 cancer cells confirmed that this effect of curcumin on the membrane slows down the receptor diffusion. This is likely to affect the receptor dimerization and, in turn, its activation.
Collapse
Affiliation(s)
- Marcelina Starok
- †Sorbonne Universités, Université de Technologie de Compiègne, CNRS, Laboratoire de Génie Enzymatique et Cellulaire, Rue Roger Couttolenc, CS 60319, F-60203 Compiègne Cedex, France
| | - Pascal Preira
- ‡CNRS; Institut de Pharmacologie et de Biologie Structurale, 205 route de Narbonne, F-31077 Toulouse, France.,§Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Muriel Vayssade
- ∥Sorbonne Universités, Université de Technologie de Compiègne, CNRS, Laboratoire de Biomécanique et Bioingénierie, Rue Roger Couttolenc, CS 60319, F-60203 Compiègne Cedex, France
| | - Karsten Haupt
- †Sorbonne Universités, Université de Technologie de Compiègne, CNRS, Laboratoire de Génie Enzymatique et Cellulaire, Rue Roger Couttolenc, CS 60319, F-60203 Compiègne Cedex, France
| | - Laurence Salomé
- ‡CNRS; Institut de Pharmacologie et de Biologie Structurale, 205 route de Narbonne, F-31077 Toulouse, France.,§Université de Toulouse, UPS, IPBS, F-31077 Toulouse, France
| | - Claire Rossi
- †Sorbonne Universités, Université de Technologie de Compiègne, CNRS, Laboratoire de Génie Enzymatique et Cellulaire, Rue Roger Couttolenc, CS 60319, F-60203 Compiègne Cedex, France
| |
Collapse
|
28
|
Yang L, Zheng J, Xiong Y, Meng R, Ma Q, Liu H, Shen H, Zheng S, Wang S, He J. Regulation of β2-adrenergic receptor cell surface expression by interaction with cystic fibrosis transmembrane conductance regulator-associated ligand (CAL). Amino Acids 2015; 47:1455-64. [PMID: 25876703 DOI: 10.1007/s00726-015-1965-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Accepted: 03/13/2015] [Indexed: 10/23/2022]
Abstract
The beta-2 adrenergic receptor (β2AR), a member of GPCR, can activate multiple signaling pathways and is an important treatment target for cardiac failure. However, the molecular mechanism about β2AR signaling regulation is not fully understood. In this study, we found that cystic fibrosis transmembrane conductance regulator-associated ligand (CAL) overexpression reduced β2AR-mediated extracellular signal-regulated kinase-1/2 (ERK1/2) activation. Further study identified CAL as a novel binding partner of β2AR. CAL is associated with β2AR mainly via the third intracellular loop (ICL3) of receptor and the coiled-coil domains of CAL, which is distinct from CAL/β1AR interaction mediated by the carboxyl terminal (CT) of β1AR and PDZ domain of CAL. CAL overexpression retarded β2AR expression in Golgi apparatus and reduced the receptor expression in plasma membrane.
Collapse
Affiliation(s)
- Longyan Yang
- Department of Biochemistry and Molecular Biology, Capital Medical University, No. 10 Xitoutiao, You An Men, Beijing, 100069, People's Republic of China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
EBP50 inhibits the migration and invasion of human breast cancer cells via LIMK/cofilin and the PI3K/Akt/mTOR/MMP signaling pathway. Med Oncol 2014; 31:162. [DOI: 10.1007/s12032-014-0162-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 08/04/2014] [Indexed: 12/21/2022]
|
30
|
Ji M, Yuan L, Lv X, Dong W, Peng X. EBP50 regulates the apoptosis of pancreatic cancer cells by decreasing the expression levels of Bcl-2. Exp Ther Med 2014; 8:919-924. [PMID: 25120624 PMCID: PMC4113643 DOI: 10.3892/etm.2014.1831] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 06/05/2014] [Indexed: 01/25/2023] Open
Abstract
Increasing evidence has demonstrated that ezrin-radixin-moesin (ERM)-binding phosphoprotein 50 (EBP50) is involved in the malignant transformation of numerous human cancers. The present study investigated the involvement of EBP50 overexpression in the tumorigenicity of pancreatic cancer (PC). The results revealed that overexpression of EBP50 suppressed cell growth, promoted cell apoptosis and arrested G1-to-S phase progression in two human PC cell lines. Overexpression of EBP50 also suppressed B-cell lymphoma 2 (Bcl-2) expression. Furthermore, nude mouse tumor xenograft models were established by the subcutaneous injection of cell lines stably transfected with an EBP50-expressing plasmid. The in vivo data indicated that overexpression of EBP50 inhibited the growth of the PC tumors and induced cell apoptosis. Thus, the present study demonstrated that EBP50 overexpression induces growth inhibition and apoptosis in PC by decreasing Bcl-2 expression. The results suggest that EBP50 may function as a potential tumor suppressor in vivo and in vitro.
Collapse
Affiliation(s)
- Mengyao Ji
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Lei Yuan
- Criminal Science and Technology Studio, Chongqing Banan Police Security Bureau, Chongqing, Chongqing 401320, P.R. China
| | - Xiaoguang Lv
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Weiguo Dong
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Xiulan Peng
- Department of Oncology, The Fifth Hospital of Wuhan, Wuhan 430050, P.R. China
| |
Collapse
|
31
|
Mishra S, Chatterjee S. Lactosylceramide promotes hypertrophy through ROS generation and activation of ERK1/2 in cardiomyocytes. Glycobiology 2014; 24:518-31. [PMID: 24658420 PMCID: PMC4001711 DOI: 10.1093/glycob/cwu020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Hypertrophy is central to several heart diseases; however, not much is known about the role of glycosphingolipids (GSLs) in this phenotype. Since GSLs have been accorded several physiological functions, we sought to determine whether these compounds affect cardiac hypertrophy. By using a rat cardiomyoblast cell line, H9c2 cells and cultured primary neonatal rat cardiomyocytes, we have determined the effects of GSLs on hypertrophy. Our study comprises (a) measurement of [(3)H]-leucine incorporation into protein, (b) measurement of cell size and morphology by immunofluorescence microscopy and (c) real-time quantitative mRNA expression assay for atrial natriuretic peptide and brain natriuretic peptide. Phenylephrine (PE), a well-established agonist of cardiac hypertrophy, served as a positive control in these studies. Subsequently, mechanistic studies were performed to explore the involvement of various signaling transduction pathways that may contribute to hypertrophy in these cardiomyocytes. We observed that lactosylceramide specifically exerted a concentration- (50-100 µM) and time (48 h)-dependent increase in hypertrophy in cardiomyocytes but not a library of other structurally related GSLs. Further, in cardiomyocytes, LacCer generated reactive oxygen species, stimulated the phosphorylation of p44 mitogen activated protein kinase and protein kinase-C, and enhanced c-jun and c-fos expression, ultimately leading to hypertrophy. In summary, we report here that LacCer specifically induces hypertrophy in cardiomyocytes via an "oxygen-sensitive signal transduction pathway."
Collapse
Affiliation(s)
- Sumita Mishra
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | | |
Collapse
|
32
|
Lv XG, Lei XF, Ji MY, Guo XF, Wang J, Dong WG. Clinical significance of EBP50 overexpression assessed by quantum dot analysis in gastric cancer. Oncol Lett 2013; 5:1844-1848. [PMID: 23833653 PMCID: PMC3701077 DOI: 10.3892/ol.2013.1271] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Accepted: 03/01/2013] [Indexed: 12/15/2022] Open
Abstract
Ezrin-radixin-moesin-binding phosphoprotein 50 (EBP50) is a postsynaptic density-95/disc-large/zonula occludens-1 (PDZ) homologous domain-containing protein that is involved in cell signaling. EBP50 regulates cell apoptosis, proliferation and invasion. In the present study, the prognostic impact factor of EBP50 expression was evaluated using a quantum dot (QD)-based assay and immunohistochemistry (IHC). The EBP50 protein expression in gastric cancer (GC) tissues was evaluated using IHC and QD-IHC. The study included 101 patients with GC (29 females and 72 males, aged 24-81 years), diagnosed and treated at the General Surgery Department of Renmin Hospital of Wuhan University (Wuhan, China) between 2000 and 2005. The survival rate was calculated using the Kaplan-Meier method and log-rank tests. IHC and QD analyses of 101 GC tissue specimens revealed that EBP50-positive tumor cells were frequently present in GC. Increased EBP50 immunostaining was observed in 63 specimens (62.4%). The EBP50 expression levels were correlated with increased tumor size and the male gender. EBP50 was well distributed in the cytoplasm and nuclei of the GC cells. However, EBP50 protein expression exhibited no correlation with age, differentiation, stage or lymph node metastasis. There were no associations between the expression of EBP50 and the mean survival rates (IHC, 50.5 vs. 58.1 months, P>0.05; QD, 55.4 vs. 63.2 months, P>0.05). These findings suggest that EBP50 protein expression is not correlated with the prognosis of patients with GC. QD-IHC and IHC have similar advantages for the detection of EBP50 protein expression.
Collapse
Affiliation(s)
- Xiao-Guang Lv
- Department of Gastroenterology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | | | | | | | | | | |
Collapse
|