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Lin H, Lin G, Lin L, Yang J, Yang D, Lin Q, Xu Y, Zeng Y. Comprehensive analysis of prognostic value and immune infiltration of Regulator of Chromosome Condensation 2 in lung adenocarcinoma. J Cancer 2024; 15:1901-1915. [PMID: 38434981 PMCID: PMC10905397 DOI: 10.7150/jca.91367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Accepted: 01/15/2024] [Indexed: 03/05/2024] Open
Abstract
Background: Lung adenocarcinoma (LUAD) incidence and mortality take the leading place of most malignancies. Previous studies have revealed the regulator of chromosome condensation 1 (RCC1) family members played an essential role during tumorigenesis. However, its biological functions in LUAD still need further investigation. Methods: Several databases were applied to explore potential effects of RCC1 family members on LUAD, such as Oncomine, GEPIA, and cBioPortal. Real-time PCR and immunohistochemistry were used to verify the expression of RCC2 in stage I LUAD. H1975 and A549 were selected to explore the biological function of RCC2 in cellular malignant phenotype. Results: The expressions of RCC1 and RCC2 showed marked differences in malignant tissue compared to lung tissue. The higher the expression levels of RCC1 or RCC2 in LUAD patients, the shorter their overall survival (OS). In normal lung tissues, RCC1 expression was highly enriched in alveolar cells and endothelial cells. Compare with RCC1, RCC2 expression in normal lung tissue was significantly enriched in macrophages, B cells and granulocytes. Additionally, RCC2 expression level was correlated with multiple immune cell infiltration in LUAD. Moreover, the mutation or different sCNA status of RCC2 exerted influence on multiple immune cell infiltration distribution. We found that the upregulation of RCC1 and RCC2 were obviously related to TP53 mutation. GSEA analysis revealed that RCC2 was involved in the process of DNA replication, nucleotide excision repair and cell cycle, which might affect tumor progression through P53 signaling pathway. We further elucidated that downregulation of RCC2 could dramatically repress the migration and invasion of LUAD cells. Conclusions: The study demonstrated that RCC1 and RCC2 expression were markedly increased in early-stage of LUAD. Patients with high expression of RCC1 or RCC2 had a worse prognosis. Based on our analysis, RCC1 and RCC2 might exert influence on LUAD process through DNA replication, nucleotide excision repair and cell cycle, as well as cells migration and invasion. Different from RCC1, RCC2 also involved in immune infiltration. These analyses provided a novel insight into the identification of diagnostic biomarker.
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Affiliation(s)
- Hai Lin
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
- The Second Clinical College, Fujian Medical University, Fuzhou, China
| | - Guofu Lin
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
- The Second Clinical College, Fujian Medical University, Fuzhou, China
| | - Lanlan Lin
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
- The Second Clinical College, Fujian Medical University, Fuzhou, China
| | - Jiansheng Yang
- Department of thoracic surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
| | - Dongyong Yang
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
| | - Qinhui Lin
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
| | - Yuan Xu
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
| | - Yiming Zeng
- Department of Respiratory Pulmonary and Critical Care Medicine, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian province, 362000, China
- Respiratory Medicine Center of Fujian Province, Quanzhou, Fujian province, 362000, China
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2
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Coronin 2B Regulates Neuronal Migration via Rac1-Dependent Multipolar-Bipolar Transition. J Neurosci 2023; 43:211-220. [PMID: 36639906 PMCID: PMC9838710 DOI: 10.1523/jneurosci.1087-22.2022] [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: 06/05/2022] [Revised: 10/24/2022] [Accepted: 11/19/2022] [Indexed: 12/12/2022] Open
Abstract
In the developing cortex, excitatory neurons migrate along the radial fibers to their final destinations and build up synaptic connection with each other to form functional circuitry. The shaping of neuronal morphologies by actin cytoskeleton dynamics is crucial for neuronal migration. However, it is largely unknown how the distribution and assembly of the F-actin cytoskeleton are coordinated. In the present study, we found that an actin regulatory protein, coronin 2B, is indispensable for the transition from a multipolar to bipolar morphology during neuronal migration in ICR mice of either sex. Loss of coronin 2B led to heterotopic accumulation of migrating neurons in the intermediate zone along with reduced dendritic complexity and aberrant neuronal activity in the cortical plate. This was accompanied by increased seizure susceptibility, suggesting the malfunction of cortical development in coronin 2B-deficient brains. Coronin 2B knockdown disrupted the distribution of the F-actin cytoskeleton at the leading processes, while the migration defect in coronin 2B-deficient neurons was partially rescued by overexpression of Rac1 and its downstream actin-severing protein, cofilin. Our results collectively reveal the physiological function of coronin 2B during neuronal migration whereby it maintains the proper distribution of activated Rac1 and the F-actin cytoskeleton.SIGNIFICANCE STATEMENT Deficits in neuronal migration during cortical development result in various neurodevelopmental disorders (e.g., focal cortical dysplasia, periventricular heterotopia, epilepsy, etc.). Most signaling pathways that control neuronal migration process converge to regulate actin cytoskeleton dynamics. Therefore, it is important to understand how actin dynamics is coordinated in the critical processes of neuronal migration. Herein, we report that coronin 2B is a key protein that regulates neuronal migration through its ability to control the distribution of the actin cytoskeleton and its regulatory signaling protein Rac1 during the multipolar-bipolar transition in the intermediate zone, providing insights into the molecular machinery that drives the migration process of newborn neurons.
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3
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Cell Cycle Regulation by Integrin-Mediated Adhesion. Cells 2022; 11:cells11162521. [PMID: 36010598 PMCID: PMC9406542 DOI: 10.3390/cells11162521] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/08/2022] [Accepted: 08/11/2022] [Indexed: 11/23/2022] Open
Abstract
Cell cycle and cell adhesion are two interdependent cellular processes regulating each other, reciprocally, in every cell cycle phase. The cell adhesion to the extracellular matrix (ECM) via integrin receptors triggers signaling pathways required for the cell cycle progression; the passage from the G1 to S phase and the completion of cytokinesis are the best-understood events. Growing evidence, however, suggests more adhesion-dependent regulatory aspects of the cell cycle, particularly during G2 to M transition and early mitosis. Conversely, the cell cycle machinery regulates cell adhesion in manners recently shown driven mainly by cyclin-dependent kinase 1 (CDK1). This review summarizes the recent findings regarding the role of integrin-mediated cell adhesion and its downstream signaling components in regulating the cell cycle, emphasizing the cell cycle progression through the G2 and early M phases. Further investigations are required to raise our knowledge about the molecular mechanisms of crosstalk between cell adhesion and the cell cycle in detail.
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4
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Noninvasive urinary protein signatures associated with colorectal cancer diagnosis and metastasis. Nat Commun 2022; 13:2757. [PMID: 35589723 PMCID: PMC9119985 DOI: 10.1038/s41467-022-30391-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 04/25/2022] [Indexed: 12/24/2022] Open
Abstract
Currently, imaging, fecal immunochemical tests (FITs) and serum carcinoembryonic antigen (CEA) tests are not adequate for the early detection and evaluation of metastasis and recurrence in colorectal cancer (CRC). To comprehensively identify and validate more accurate noninvasive biomarkers in urine, we implement a staged discovery-verification-validation pipeline in 657 urine and 993 tissue samples from healthy controls and CRC patients with a distinct metastatic risk. The generated diagnostic signature combined with the FIT test reveals a significantly increased sensitivity (+21.2% in the training set, +43.7% in the validation set) compared to FIT alone. Moreover, the generated metastatic signature for risk stratification correctly predicts over 50% of CEA-negative metastatic patients. The tissue validation shows that elevated urinary protein biomarkers reflect their alterations in tissue. Here, we show promising urinary protein signatures and provide potential interventional targets to reliably detect CRC, although further multi-center external validation is needed to generalize the findings. More sensitive and specific non-invasive biomarkers are desired for early detection of cancer. Here, the authors show a protein signature in the urine that increases sensitivity for colorectal cancer detection when combined with fecal immunochemical tests and corrects diagnosis in some fecal immunochemical tests-negative patients.
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5
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CORO1C, a novel PAK4 binding protein, recruits phospho-PAK4 at serine 99 to the leading edge and promotes the migration of gastric cancer cells. Acta Biochim Biophys Sin (Shanghai) 2022; 54:673-685. [PMID: 35593474 PMCID: PMC9827817 DOI: 10.3724/abbs.2022044] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Gastric cancer is one of the malignant tumors in the world. PAK4 plays an important role in the occurrence and development of gastric cancer, especially in the process of invasion and metastasis. Here we discover that CORO1C, a member of coronin family that regulates microfilament and lamellipodia formation, recruits cytoplasmic PAK4 to the leading edge of gastric cancer cells by C-terminal extension (CE) domain of CORO1C (353-457 aa). The localization of PAK4 on the leading edge of the cell depends on two necessary conditions: the phosphorylation of PAK4 on serine 99 and the binding to the CE domain of CORO1C. Unphosphorylated PAK4 on serine 99 is closely associated with microtubules by PAK4/GEF-H1/Tctex-1 complex. Once phosphorylated, PAK4 is released from microtubule, and then is recruited by CORO1C to the leading edge and regulates the CORO1C/RCC2 (regulator of chromosome condensation 2) complex, leading to the migration of gastric cancer cells. Our results reveal a new mechanism by which PAK4 regulates the migration potential of gastric cancer cells through microtubule-microfilament cross talk.
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de Assis LVM, Lacerda JT, Moraes MN, Domínguez-Amorocho OA, Kinker GS, Mendes D, Silva MM, Menck CFM, Câmara NOS, Castrucci AMDL. Melanopsin (Opn4) is an oncogene in cutaneous melanoma. Commun Biol 2022; 5:461. [PMID: 35562405 PMCID: PMC9106662 DOI: 10.1038/s42003-022-03425-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 04/27/2022] [Indexed: 02/08/2023] Open
Abstract
The search for new therapeutical targets for cutaneous melanoma and other cancers is an ongoing task. We expanded this knowledge by evaluating whether opsins, light- and thermo-sensing proteins, could display tumor-modulatory effects on melanoma cancer. Using different experimental approaches, we show that melanoma cell proliferation is slower in the absence of Opn4, compared to Opn4WT due to an impaired cell cycle progression and reduced melanocyte inducing transcription factor (Mitf) expression. In vivo tumor progression of Opn4KO cells is remarkably reduced due to slower proliferation, and higher immune system response in Opn4KO tumors. Using pharmacological assays, we demonstrate that guanylyl cyclase activity is impaired in Opn4KO cells. Evaluation of Tumor Cancer Genome Atlas (TCGA) database confirms our experimental data as reduced MITF and OPN4 expression in human melanoma correlates with slower cell cycle progression and presence of immune cells in the tumor microenvironment (TME). Proteomic analyses of tumor bulk show that the reduced growth of Opn4KO tumors is associated with reduced Mitf signaling, higher translation of G2/M proteins, and impaired guanylyl cyclase activity. Conversely, in Opn4WT tumors increased small GTPase and an immune-suppressive TME are found. Such evidence points to OPN4 as an oncogene in melanoma, which could be pharmacologically targeted.
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Affiliation(s)
- Leonardo Vinícius Monteiro de Assis
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil.
- Institute of Neurobiology, Center for Brain, Behavior, and Metabolism, University of Lübeck, Lübeck, Germany.
| | - José Thalles Lacerda
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
| | - Maria Nathália Moraes
- Laboratory of Neurobiology, Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Gabriela Sarti Kinker
- Laboratory of Translational Immuno-Oncology A. C. Camargo Cancer Center - International Research Center, São Paulo, Brazil
| | - Davi Mendes
- DNA Repair Lab, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Matheus Molina Silva
- DNA Repair Lab, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Carlos Frederico Martins Menck
- DNA Repair Lab, Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Niels Olsen Saraiva Câmara
- Laboratory of Transplantation Immunobiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Ana Maria de Lauro Castrucci
- Laboratory of Comparative Physiology of Pigmentation, Department of Physiology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil
- Department of Biology, University of Virginia, Charlottesville, VA, USA
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Filić V, Mijanović L, Putar D, Talajić A, Ćetković H, Weber I. Regulation of the Actin Cytoskeleton via Rho GTPase Signalling in Dictyostelium and Mammalian Cells: A Parallel Slalom. Cells 2021; 10:1592. [PMID: 34202767 PMCID: PMC8305917 DOI: 10.3390/cells10071592] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/16/2021] [Accepted: 06/16/2021] [Indexed: 01/15/2023] Open
Abstract
Both Dictyostelium amoebae and mammalian cells are endowed with an elaborate actin cytoskeleton that enables them to perform a multitude of tasks essential for survival. Although these organisms diverged more than a billion years ago, their cells share the capability of chemotactic migration, large-scale endocytosis, binary division effected by actomyosin contraction, and various types of adhesions to other cells and to the extracellular environment. The composition and dynamics of the transient actin-based structures that are engaged in these processes are also astonishingly similar in these evolutionary distant organisms. The question arises whether this remarkable resemblance in the cellular motility hardware is accompanied by a similar correspondence in matching software, the signalling networks that govern the assembly of the actin cytoskeleton. Small GTPases from the Rho family play pivotal roles in the control of the actin cytoskeleton dynamics. Indicatively, Dictyostelium matches mammals in the number of these proteins. We give an overview of the Rho signalling pathways that regulate the actin dynamics in Dictyostelium and compare them with similar signalling networks in mammals. We also provide a phylogeny of Rho GTPases in Amoebozoa, which shows a variability of the Rho inventories across different clades found also in Metazoa.
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Affiliation(s)
- Vedrana Filić
- Division of Molecular Biology, Ruđer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia; (L.M.); (D.P.); (A.T.); (H.Ć.)
| | | | | | | | | | - Igor Weber
- Division of Molecular Biology, Ruđer Bošković Institute, Bijenička 54, HR-10000 Zagreb, Croatia; (L.M.); (D.P.); (A.T.); (H.Ć.)
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8
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Calderon-Aparicio A, Bode AM. Roles of regulator of chromosome condensation 2 in cancer: Beyond its regulatory function in cell cycle. Oncol Rev 2021; 15:525. [PMID: 33824700 PMCID: PMC8018209 DOI: 10.4081/oncol.2021.525] [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: 10/25/2020] [Accepted: 03/02/2021] [Indexed: 11/22/2022] Open
Abstract
Regulator of chromosome condensation 2 (RCC2) is an essential protein in order for mitosis to proceed properly. It localizes in the centrosome of chromosomes where is involved in chromosome segregation and cytokinesis. Furthermore, RCC2 associates with integrin networks at the plasma membrane where participates in the control of cell movement. Because of its known role in cell cycle, RCC2 has been linked with cancer progression. Several reports show that RCC2 induces cancer hallmarks, but the mechanisms explaining how RCC2 exerts these roles are widely unknown. Here, we aim to summarize the main findings explaining the roles and mechanisms of RCC2 in cancer promotion. RCC2 is overexpressed in different cancers, including glioblastoma, lung, ovarian, and esophageal which is related to proliferation, migration, invasion promotion in vitro and tumor progression and metastasis in vivo. Besides, RCC2 overexpression induces epithelial-mesenchymal transition and causes poorer prognosis in cancer patients. RCC2 overexpression has also been linked with resistance development to chemotherapy and radiotherapy by inhibiting apoptosis and activating cancer-promoting transcription factors. Unfortunately, not RCC2 inhibitors are currently available for further pre-clinical and clinical assays. Therefore, these findings emphasize the potential use of RCC2 as a targetable biomarker in cancer and highlight the importance for designing RCC2 chemical inhibitors to evaluate its efficacy in animal studies and clinical trials.
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Affiliation(s)
- Ali Calderon-Aparicio
- The Hormel Institute, University of Minnesota, Austin, MN.,Department of Pharmaceutical Sciences, School of Pharmacy and Health Professions, University of Maryland Eastern Shore, Princess Anne, MD, USA
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, MN
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Guo K, Zhao C, Lang B, Wang H, Zheng H, Zhang F. Regulator of Chromosome Condensation 2 Modulates Cell Cycle Progression, Tumorigenesis, and Therapeutic Resistance. Front Mol Biosci 2021; 7:620973. [PMID: 33521058 PMCID: PMC7838589 DOI: 10.3389/fmolb.2020.620973] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 12/08/2020] [Indexed: 01/03/2023] Open
Abstract
Accurate regulation of cell cycle is important for normal tissue development and homeostasis. RCC2 (Regulator of Chromosome Condensation 2) play a role as chromosomal passenger complex (CPC) implicated in all cell cycle phases. RCC2 was initially identified as Ran guanine exchange factor (GEF) for small G proteins. Therefore, RCC2 plays a key role in oncogenesis of most cancers. RCC2 is implicated in Colorectal Cancer (CRC), Lung Adenocarcinoma (LUAD), breast cancer, and ovarian cancer. Expression level of RCC2 protein determines regulation of tumor cell proliferation, invasion, metastasis, and radio-chemotherapeutic resistance. In this review, we explored proteins that interact with RCC2 to modulate tumor development and cancer therapeutic resistance by regulation of cell cycle process through various signaling pathways.
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Affiliation(s)
- Kun Guo
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Cheng Zhao
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Bin Lang
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Huiqin Wang
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Hang Zheng
- College of Life Sciences, Shanghai Normal University, Shanghai, China
| | - Feng Zhang
- College of Life Sciences, Shanghai Normal University, Shanghai, China
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10
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Xu X, Zhou X, Zhang J, Li H, Cao Y, Tan X, Zhu X, Yang J. MicroRNA‐191 modulates cisplatin‐induced DNA damage response by targeting RCC2. FASEB J 2020; 34:13573-13585. [PMID: 32803782 DOI: 10.1096/fj.202000945r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 07/19/2020] [Accepted: 07/27/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Xianrong Xu
- Department of Preventive Medicine Hangzhou Normal University School of Medicine Hangzhou China
| | - Xiaofeng Zhou
- Department of Radiation Oncology The Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou China
| | - Jianyun Zhang
- Department of Preventive Medicine Hangzhou Normal University School of Medicine Hangzhou China
| | - Hongjuan Li
- Department of Preventive Medicine Hangzhou Normal University School of Medicine Hangzhou China
| | - Yifei Cao
- Department of Preventive Medicine Hangzhou Normal University School of Medicine Hangzhou China
| | - Xiaohua Tan
- Department of Preventive Medicine Hangzhou Normal University School of Medicine Hangzhou China
| | - Xinqiang Zhu
- Laboratory Research Center The Fourth Affiliated Hospital Zhejiang University School of Medicine Yiwu China
| | - Jun Yang
- Department of Preventive Medicine Hangzhou Normal University School of Medicine Hangzhou China
- Zhejiang Provincial Center for Uterine Cancer Diagnosis and Therapy Research The Affiliated Women's Hospital Zhejiang University School of Medicine Hangzhou China
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11
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Wu Y, Zhang Y, Zheng X, Dai F, Lu Y, Dai L, Niu M, Guo H, Li W, Xue X, Bo Y, Guo Y, Qin J, Qin Y, Liu H, Zhang Y, Yang T, Li L, Zhang L, Hou R, Wen S, An C, Li H, Xu W, Gao W. Circular RNA circCORO1C promotes laryngeal squamous cell carcinoma progression by modulating the let-7c-5p/PBX3 axis. Mol Cancer 2020; 19:99. [PMID: 32487167 PMCID: PMC7265647 DOI: 10.1186/s12943-020-01215-4] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 05/11/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Laryngeal squamous cell carcinoma (LSCC) is a common malignant tumor of the head and neck. LSCC patients have seriously impaired vocal, respiratory, and swallowing functions with poor prognosis. Circular RNA (circRNA) has attracted great attention in cancer research. However, the expression patterns and roles of circRNAs in LSCC remain largely unknown. METHODS RNA sequencing was performed on 57 pairs of LSCC and matched adjacent normal mucosa tissues to construct circRNA, miRNA, and mRNA expression profiles. RT-PCR, qPCR, Sanger sequencing, and FISH were undertaken to study the expression, localization, and clinical significance of circCORO1C in LSCC tissues and cells. The functions of circCORO1C in LSCC were investigated by RNAi-mediated knockdown, proliferation analysis, EdU staining, colony formation assay, Transwell assay, and apoptosis analysis. The regulatory mechanisms among circCORO1C, let-7c-5p, and PBX3 were investigated by luciferase assay, RNA immunoprecipitation, western blotting, and immunohistochemistry. RESULTS circCORO1C was highly expressed in LSCC tissues and cells, and this high expression was closely associated with the malignant progression and poor prognosis of LSCC. Knockdown of circCORO1C inhibited the proliferation, migration, invasion, and in vivo tumorigenesis of LSCC cells. Mechanistic studies revealed that circCORO1C competitively bound to let-7c-5p and prevented it from decreasing the level of PBX3, which promoted the epithelial-mesenchymal transition and finally facilitated the malignant progression of LSCC. CONCLUSIONS circCORO1C has an oncogenic role in LSCC progression and may serve as a novel target for LSCC therapy. circCORO1C expression has the potential to serve as a novel diagnostic and prognostic biomarker for LSCC detection.
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Affiliation(s)
- Yongyan Wu
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Otolaryngology Head & Neck Surgery, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Biochemistry & Molecular Biology, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Yuliang Zhang
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Xiwang Zheng
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Fengsheng Dai
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Otolaryngology Head & Neck Surgery, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Yan Lu
- Department of Otolaryngology Head & Neck Surgery, The First Hospital, Jinzhou Medical University, Jinzhou, 121001, Liaoning, People's Republic of China
| | - Li Dai
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Otolaryngology Head & Neck Surgery, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Min Niu
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Huina Guo
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Wenqi Li
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Otolaryngology Head & Neck Surgery, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Xuting Xue
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Yunfeng Bo
- Department of Pathology, Shanxi Cancer Hospital, Shanxi Medical University, Taiyuan, 030013, Shanxi, People's Republic of China
| | - Yujia Guo
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Jiangbo Qin
- Department of Otolaryngology Head & Neck Surgery, Heping Hospital Affiliated to Changzhi Medical College, Changzhi, 046000, Shanxi, People's Republic of China
| | - Yixiao Qin
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Otolaryngology Head & Neck Surgery, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Hongliang Liu
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Cell Biology and Genetics, Basic Medical School of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Yu Zhang
- Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.,Department of Physiology, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Tao Yang
- Department of Biochemistry & Molecular Biology, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Li Li
- Department of Cell Biology and Genetics, Basic Medical School of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China
| | - Linshi Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, People's Republic of China
| | - Rui Hou
- Harry Perkins Institute of Medical Research, QEII Medical Centre and Centre for Medical Research, the University of Western Australia, PO Box 7214, 6 Verdun Street, Nedlands, Perth, Western Australia, 6009, Australia
| | - Shuxin Wen
- General Hospital, Shenzhen University, Shenzhen, 518055, Guangdong, People's Republic of China
| | - Changming An
- Department of Head and Neck Surgery, Cancer Hospital, National Cancer Center, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100021, People's Republic of China.
| | - Huizheng Li
- Department of Otolaryngology Head & Neck Surgery, Dalian Municipal Friendship Hospital, Dalian Medical University, Dalian, 116100, Liaoning, People's Republic of China.
| | - Wei Xu
- Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, 250022, Shandong, People's Republic of China. .,Shandong Provincial Institute of Otolaryngology, Jinan, 250022, Shandong, People's Republic of China. .,Key Laboratory of Otolaryngology, Ministry of Health, Shandong University, Jinan, 250022, Shandong, People's Republic of China.
| | - Wei Gao
- Shanxi Key Laboratory of Otorhinolaryngology Head and Neck Cancer, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China. .,Shanxi Province Clinical Medical Research Center for Precision Medicine of Head and Neck Cancer, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China. .,Department of Otolaryngology Head & Neck Surgery, The First Hospital of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China. .,Key Laboratory of Cellular Physiology, Ministry of Education, Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China. .,Department of Cell Biology and Genetics, Basic Medical School of Shanxi Medical University, Taiyuan, 030001, Shanxi, People's Republic of China.
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12
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Kim GY, Lim HJ, Kim WH, Park HY. Coronin 1B regulates the TNFα-induced apoptosis of HUVECs by mediating the interaction between TRADD and FADD. Biochem Biophys Res Commun 2020; 526:999-1004. [DOI: 10.1016/j.bbrc.2020.03.096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/18/2020] [Indexed: 01/11/2023]
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13
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Wang P, Zhang W, Wang L, Liang W, Cai A, Gao Y, Chen L. RCC2 Interacts with Small GTPase RalA and Regulates Cell Proliferation and Motility in Gastric Cancer. Onco Targets Ther 2020; 13:3093-3103. [PMID: 32341655 PMCID: PMC7166089 DOI: 10.2147/ott.s228914] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 12/29/2019] [Indexed: 12/20/2022] Open
Abstract
Background Regulator of chromosome condensation 2 (RCC2), also known as TD-60, is associated with various human malignant cancers. RCC2 has been shown to exhibit guanine exchange factor (GEF) activity and contribute to early mitosis. However, the role and mechanism of RCC2 in gastric cancer remain unclear. Materials and Methods RCC2 expression in gastric cancer was studied using qPCR, Western blotting and immunochemistry staining of clinical specimens, and its roles in the cytobiology, mouse model and related molecular pathways were evaluated using gastric cell lines. Results RCC2 was frequently overexpressed in gastric cancer. RCC2 knockdown significantly inhibited cell proliferation, migration and invasion in vitro, which was further confirmed by the RCC2 overexpression results in gastric cancer cells. Moreover, RCC2 knockdown inhibited tumor progression in vivo. Further study revealed the interaction between RCC2 and RalA. The level of RalA-GTP was decreased in gastric cancer cells after RCC2 knockdown, while an increased phosphorylation level in MAPK/JNK was found. Furthermore, the changes in the level of RalA-GTP as well as cell proliferation, migration and invasion abilities were further confirmed using RBC8, a specific small-molecule inhibitor of the intracellular actions of Ral GTPases, in gastric cancer cells. Conclusion RCC2 plays an important role in gastric cancer. RCC2 knockdown inhibits cell growth, cell motility and tumor progression, which may act through RalA and affect the MAPK/JNK pathway.
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Affiliation(s)
- Pengpeng Wang
- School of Medicine, Nankai University, Tianjin 300071, People's Republic of China.,Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
| | - Wang Zhang
- Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
| | - Lili Wang
- Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
| | - Wenquan Liang
- Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
| | - Aizhen Cai
- Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
| | - Yunhe Gao
- Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
| | - Lin Chen
- School of Medicine, Nankai University, Tianjin 300071, People's Republic of China.,Department of General Surgery, Chinese People's Liberation Army General Hospital, Beijing 100853, People's Republic of China
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14
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Kotelevets L, Chastre E. Rac1 Signaling: From Intestinal Homeostasis to Colorectal Cancer Metastasis. Cancers (Basel) 2020; 12:cancers12030665. [PMID: 32178475 PMCID: PMC7140047 DOI: 10.3390/cancers12030665] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Revised: 03/06/2020] [Accepted: 03/08/2020] [Indexed: 12/14/2022] Open
Abstract
The small GTPase Rac1 has been implicated in a variety of dynamic cell biological processes, including cell proliferation, cell survival, cell-cell contacts, epithelial mesenchymal transition (EMT), cell motility, and invasiveness. These processes are orchestrated through the fine tuning of Rac1 activity by upstream cell surface receptors and effectors that regulate the cycling Rac1-GDP (off state)/Rac1-GTP (on state), but also through the tuning of Rac1 accumulation, activity, and subcellular localization by post translational modifications or recruitment into molecular scaffolds. Another level of regulation involves Rac1 transcripts stability and splicing. Downstream, Rac1 initiates a series of signaling networks, including regulatory complex of actin cytoskeleton remodeling, activation of protein kinases (PAKs, MAPKs) and transcription factors (NFkB, Wnt/β-catenin/TCF, STAT3, Snail), production of reactive oxygen species (NADPH oxidase holoenzymes, mitochondrial ROS). Thus, this GTPase, its regulators, and effector systems might be involved at different steps of the neoplastic progression from dysplasia to the metastatic cascade. After briefly placing Rac1 and its effector systems in the more general context of intestinal homeostasis and in wound healing after intestinal injury, the present review mainly focuses on the several levels of Rac1 signaling pathway dysregulation in colorectal carcinogenesis, their biological significance, and their clinical impact.
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Affiliation(s)
- Larissa Kotelevets
- Institut National de la Santé et de la Recherche Médicale, UMR S 938, Centre de Recherche Saint-Antoine, 75012 Paris, France
- Sorbonne Université, Hôpital Saint-Antoine, Site Bâtiment Kourilsky, 75012 Paris, France
- Correspondence: (L.K.); (E.C.)
| | - Eric Chastre
- Institut National de la Santé et de la Recherche Médicale, UMR S 938, Centre de Recherche Saint-Antoine, 75012 Paris, France
- Sorbonne Université, Hôpital Saint-Antoine, Site Bâtiment Kourilsky, 75012 Paris, France
- Correspondence: (L.K.); (E.C.)
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15
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Solga R, Behrens J, Ziemann A, Riou A, Berwanger C, Becker L, Garrett L, de Angelis MH, Fischer L, Coras R, Barkovits K, Marcus K, Mahabir E, Eichinger L, Schröder R, Noegel AA, Clemen CS. CRN2 binds to TIMP4 and MMP14 and promotes perivascular invasion of glioblastoma cells. Eur J Cell Biol 2019; 98:151046. [PMID: 31677819 DOI: 10.1016/j.ejcb.2019.151046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/13/2019] [Accepted: 09/30/2019] [Indexed: 12/21/2022] Open
Abstract
CRN2 is an actin filament binding protein involved in the regulation of various cellular processes including cell migration and invasion. CRN2 has been implicated in the malignant progression of different types of human cancer. We used CRN2 knock-out mice for analyses as well as for crossbreeding with a Tp53/Pten knock-out glioblastoma mouse model. CRN2 knock-out mice were subjected to a phenotyping screen at the German Mouse Clinic. Murine glioblastoma tissue specimens as well as cultured murine brain slices and glioblastoma cell lines were investigated by immunohistochemistry, immunofluorescence, and cell biological experiments. Protein interactions were studied by immunoprecipitation, pull-down, and enzyme activity assays. CRN2 knock-out mice displayed neurological and behavioural alterations, e.g. reduced hearing sensitivity, reduced acoustic startle response, hypoactivity, and less frequent urination. While glioblastoma mice with or without the additional CRN2 knock-out allele exhibited no significant difference in their survival rates, the increased levels of CRN2 in transplanted glioblastoma cells caused a higher tumour cell encasement of murine brain slice capillaries. We identified two important factors of the tumour microenvironment, the tissue inhibitor of matrix metalloproteinase 4 (TIMP4) and the matrix metalloproteinase 14 (MMP14, synonym: MT1-MMP), as novel binding partners of CRN2. All three proteins mutually interacted and co-localised at the front of lamellipodia, and CRN2 was newly detected in exosomes. On the functional level, we demonstrate that CRN2 increased the secretion of TIMP4 as well as the catalytic activity of MMP14. Our results imply that CRN2 represents a pro-invasive effector within the tumour cell microenvironment of glioblastoma multiforme.
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Affiliation(s)
- Roxana Solga
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany
| | - Juliane Behrens
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany
| | - Anja Ziemann
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany
| | - Adrien Riou
- In-vivo NMR, Max Planck Institute for Metabolism Research, 50931, Cologne, Germany
| | - Carolin Berwanger
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany; Institute of Aerospace Medicine, German Aerospace Center (DLR), 51147, Cologne, Germany
| | - Lore Becker
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Centre Munich, German Research Centre for Environmental Health, 85764, Neuherberg, Germany
| | - Lillian Garrett
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Centre Munich, German Research Centre for Environmental Health, 85764, Neuherberg, Germany; Institute of Developmental Genetics, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764, Neuherberg, Germany
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Centre Munich, German Research Centre for Environmental Health, 85764, Neuherberg, Germany; Chair of Experimental Genetics, School of Life Science Weihenstephan, Technische Universität München, 85354, Freising, Germany; German Center for Diabetes Research (DZD), 85764, Neuherberg, Germany
| | - Lisa Fischer
- Comparative Medicine, Center for Molecular Medicine Cologne, University of Cologne, 50931, Cologne, Germany
| | - Roland Coras
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Katalin Barkovits
- Medizinisches Proteom‑Center, Medical Faculty, Ruhr-University Bochum, 44801, Bochum, Germany
| | - Katrin Marcus
- Medizinisches Proteom‑Center, Medical Faculty, Ruhr-University Bochum, 44801, Bochum, Germany
| | - Esther Mahabir
- Comparative Medicine, Center for Molecular Medicine Cologne, University of Cologne, 50931, Cologne, Germany
| | - Ludwig Eichinger
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany
| | - Rolf Schröder
- Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany
| | - Angelika A Noegel
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany.
| | - Christoph S Clemen
- Centre for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931, Cologne, Germany; Institute of Neuropathology, University Hospital Erlangen, Friedrich-Alexander University Erlangen-Nürnberg, 91054, Erlangen, Germany; Center for Physiology and Pathophysiology, Institute of Vegetative Physiology, Medical Faculty, University of Cologne, 50931, Cologne, Germany.
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16
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Chen Z, Wu W, Huang Y, Xie L, Li Y, Chen H, Li W, Yin D, Hu K. RCC2 promotes breast cancer progression through regulation of Wnt signaling and inducing EMT. J Cancer 2019; 10:6837-6847. [PMID: 31839818 PMCID: PMC6909956 DOI: 10.7150/jca.36430] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/29/2019] [Indexed: 01/09/2023] Open
Abstract
Regulator of chromosome condensation 2 (RCC2), also known as TD-60, is an RCC1 family member and plays an essential role in mitosis. However, the roles of RCC2 in breast cancer are still unclear. In this study, RCC2 was found to exert oncogenic activities in breast cancer. Samples of breast cancer tissue revealed an increased level of RCC2 and a high level of RCC2 was associated with poor overall survival rate of breast cancer patients. Overexpression of RCC2 significantly enhanced cell proliferation and migration abilities of breast cancer cells in vitro and in vivo. Mechanistically, RCC2 induced epithelial-mesenchymal transition (EMT) through the activation of Wnt signaling pathway. Collectively, our study indicates that RCC2 contributes to breast cancer progression and functions as an important regulator of EMT through the activation of Wnt signaling.
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Affiliation(s)
- Zhen Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Wenjing Wu
- Department of Breast Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Yongsheng Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Limin Xie
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Yu Li
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Hengxing Chen
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Wenjia Li
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Dong Yin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Kaishun Hu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
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17
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Yu H, Zhang S, Ibrahim AN, Wang J, Deng Z, Wang M. RCC2 promotes proliferation and radio-resistance in glioblastoma via activating transcription of DNMT1. Biochem Biophys Res Commun 2019; 516:999-1006. [PMID: 31277942 DOI: 10.1016/j.bbrc.2019.06.097] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 06/18/2019] [Indexed: 10/26/2022]
Abstract
Regulator of chromosome condensation 2 (RCC2) is a regulator of cell-cycle progression linked in multiple cancers to pro-tumorigenic phenomena including promotion of tumor growth, tumor metastases and poorer patient prognoses. However, the role of RCC2 in GBM remains under-investigated. Here, we sought to determine the relevance of RCC2 in GBM, as well as its roles in GBM development, progression and prognosis. Initial clinical evaluation determined significant RCC2 enrichment in GBM when compared to normal brain tissue, and elevated expression was closely associated with a poorer prognosis in glioma patients. Via shRNA inhibition, we determined that RCC2 is essential to tumor proliferation and tumorigenicity in vitro and in vivo. Additionally, RCC2 was determined to promote radioresistance of GBM tumor cells. Investigation of the underlying mechanisms implicated DNA mismatch repair, JAK-STAT pathway and activated transcription of DNA methyltransferase 1 (DNMT1). For validation, pharmacologic inhibition via administration of a DNMT1 inhibitor demonstrated attenuated GBM tumor growth both in vitro and in vivo. Collectively, this study determined a novel therapeutic target for GBM in the form of RCC2, which plays a pivotal role in GBM proliferation and radio-resistance via regulation of DNMT1 expression in a p-STAT3 dependent manner.
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Affiliation(s)
- Hai Yu
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Suojun Zhang
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430073, China
| | - Ahmed N Ibrahim
- Department of Neurology, SUNY Upstate Medical University, Syracuse, NY, USA
| | - Jia Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Zhong Deng
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Maode Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China.
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18
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Naydenov NG, Joshi S, Feygin A, Saini S, Litovchick L, Ivanov AI. A membrane fusion protein, Ykt6, regulates epithelial cell migration via microRNA-mediated suppression of Junctional Adhesion Molecule A. Cell Cycle 2018; 17:1812-1831. [PMID: 30010460 DOI: 10.1080/15384101.2018.1496755] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Vesicle trafficking regulates epithelial cell migration by remodeling matrix adhesions and delivering signaling molecules to the migrating leading edge. Membrane fusion, which is driven by soluble N-ethylmaleimide-sensitive factor associated receptor (SNARE) proteins, is an essential step of vesicle trafficking. Mammalian SNAREs represent a large group of proteins, but few have been implicated in the regulation of cell migration. Ykt6 is a unique SNARE existing in equilibrium between active membrane-bound and inactive cytoplasmic pools, and mediating vesicle trafficking between different intracellular compartments. The biological functions of this protein remain poorly understood. In the present study, we found that Ykt6 acts as a negative regulator of migration and invasion of human prostate epithelial cells. Furthermore, Ykt6 regulates the integrity of epithelial adherens and tight junctions. The observed anti-migratory activity of Ykt6 is mediated by a unique mechanism involving the expressional upregulation of microRNA 145, which selectively decreases the cellular level of Junctional Adhesion Molecule (JAM) A. This decreased JAM-A expression limits the activity of Rap1 and Rac1 small GTPases, thereby attenuating cell spreading and motility. The described novel functions of Ykt6 could be essential for the regulation of epithelial barriers, epithelial repair, and metastatic dissemination of cancer cells.
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Affiliation(s)
- Nayden G Naydenov
- a Department of Inflammation and Immunity , Lerner Research Institute of Cleveland Clinic Foundation , Cleveland , OH , USA.,b Department of Human and Molecular Genetics , Virginia Commonwealth University , Richmond , VA , USA
| | - Supriya Joshi
- b Department of Human and Molecular Genetics , Virginia Commonwealth University , Richmond , VA , USA
| | - Alex Feygin
- b Department of Human and Molecular Genetics , Virginia Commonwealth University , Richmond , VA , USA
| | - Siddharth Saini
- c Department of Internal Medicine , Virginia Commonwealth University , Richmond , VA , USA
| | - Larisa Litovchick
- c Department of Internal Medicine , Virginia Commonwealth University , Richmond , VA , USA
| | - Andrei I Ivanov
- a Department of Inflammation and Immunity , Lerner Research Institute of Cleveland Clinic Foundation , Cleveland , OH , USA.,b Department of Human and Molecular Genetics , Virginia Commonwealth University , Richmond , VA , USA
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19
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Fujii K, Miyata Y, Takahashi I, Koizumi H, Saji H, Hoshikawa M, Takagi M, Nishimura T, Nakamura H. Differential Proteomic Analysis between Small Cell Lung Carcinoma (SCLC) and Pulmonary Carcinoid Tumors Reveals Molecular Signatures for Malignancy in Lung Cancer. Proteomics Clin Appl 2018; 12:e1800015. [PMID: 29888431 DOI: 10.1002/prca.201800015] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 05/10/2018] [Indexed: 12/15/2022]
Abstract
PURPOSE The molecular underpinnings that may prognosticate survival and increase our understanding of tumor development and progression are still poorly understood. This study aimed to define the molecular signatures for malignancy in small cell lung carcinoma (SCLC), which is known for its highly aggressive clinical features and poor prognosis. EXPERIMENTAL DESIGN Using clinical specimens, the authors perform a comparative proteomic analysis of high-grade SCLCs and low-grade pulmonary carcinoid tumors (PCTs), both of which are types of neuroendocrine tumors. A label-free LC-MS-based quantitative proteomic analysis is applied to tumor cells laser-microdissected from their formalin-fixed paraffin-embedded (FFPE) tissues obtained from six patients each. RESULTS Overall, 1991 proteins are identified from tumor cells in the FFPE tissues. Through the protein-protein interaction network analysis of 201 proteins significantly, the authors find that SCLC is functionally characterized by activation of molecular pathways for spliceosome, RNA transport, and DNA replication and cell cycle. Particularly, 11 proteins involved in tumor proliferation (MCM2, 4, 6, 7, and MSH2), metastasis (RCC2, CORO1C, CHD4, and IPO9), and cancer metabolism (PHGDH and TYMP) are identified as SCLC-specific proteins. Furthermore, their prognostic significances are demonstrated by online Kaplan-Meier survival analysis. CONCLUSIONS AND CLINICAL RELEVANCE These clinical tissue proteomic approach for SCLC reveals the proteins associated with aggressiveness and poor prognosis. The identified SCLC-specific proteins represent potential therapeutic targets. Moreover, MCMs and PHGDH can be poor prognostic factors for lung cancer.
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Affiliation(s)
- Kiyonaga Fujii
- Department of Translational Medicine Informatics, St. Marianna University School of Medicine, Kawasaki, Japan
| | | | | | - Hirotaka Koizumi
- Department of Pathology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Hisashi Saji
- Department of Chest Surgery, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Masahiro Hoshikawa
- Department of Pathology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Masayuki Takagi
- Department of Pathology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Toshihide Nishimura
- Department of Translational Medicine Informatics, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Haruhiko Nakamura
- Department of Translational Medicine Informatics, St. Marianna University School of Medicine, Kawasaki, Japan.,Department of Chest Surgery, St. Marianna University School of Medicine, Kawasaki, Japan
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20
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Atkinson SJ, Gontarczyk AM, Alghamdi AA, Ellison TS, Johnson RT, Fowler WJ, Kirkup BM, Silva BC, Harry BE, Schneider JG, Weilbaecher KN, Mogensen MM, Bass MD, Parsons M, Edwards DR, Robinson SD. The β3-integrin endothelial adhesome regulates microtubule-dependent cell migration. EMBO Rep 2018; 19:embr.201744578. [PMID: 29794156 PMCID: PMC6030693 DOI: 10.15252/embr.201744578] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 04/25/2018] [Accepted: 04/27/2018] [Indexed: 01/11/2023] Open
Abstract
Integrin β3 is seen as a key anti-angiogenic target for cancer treatment due to its expression on neovasculature, but the role it plays in the process is complex; whether it is pro- or anti-angiogenic depends on the context in which it is expressed. To understand precisely β3's role in regulating integrin adhesion complexes in endothelial cells, we characterised, by mass spectrometry, the β3-dependent adhesome. We show that depletion of β3-integrin in this cell type leads to changes in microtubule behaviour that control cell migration. β3-integrin regulates microtubule stability in endothelial cells through Rcc2/Anxa2-driven control of active Rac1 localisation. Our findings reveal that angiogenic processes, both in vitro and in vivo, are more sensitive to microtubule targeting agents when β3-integrin levels are reduced.
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Affiliation(s)
- Samuel J Atkinson
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Aleksander M Gontarczyk
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Abdullah Aa Alghamdi
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Tim S Ellison
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Robert T Johnson
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Wesley J Fowler
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Benjamin M Kirkup
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Bernardo C Silva
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Bronwen E Harry
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Jochen G Schneider
- Luxembourg Center for Systems Biomedicine (LCSB), Luxembourg & Saarland University Medical Center, Internal Medicine II, University of Luxembourg, Homburg, Germany.,Centre Hospitalier Emily Mayrisch, Esch, Luxembourg
| | - Katherine N Weilbaecher
- Division of Molecular Oncology, Department of Internal Medicine, Washington University in St Louis, St. Louis, MO, USA
| | - Mette M Mogensen
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Mark D Bass
- Department of Biomedical Science, Centre for Membrane Interactions and Dynamics, University of Sheffield, Sheffield, UK
| | - Maddy Parsons
- Randall Division of Cell and Molecular Biophysics, King's College London, New Hunt's House, Guys Campus, London, UK
| | - Dylan R Edwards
- Faculty of Medicine and Health Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
| | - Stephen D Robinson
- School of Biological Sciences, Norwich Research Park, University of East Anglia, Norwich, UK
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21
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Kang T, Jensen P, Solovyeva V, Brewer JR, Larsen MR. Dynamic Changes in the Protein Localization in the Nuclear Environment in Pancreatic β-Cell after Brief Glucose Stimulation. J Proteome Res 2018. [PMID: 29518335 DOI: 10.1021/acs.jproteome.7b00930] [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] [Indexed: 02/01/2023]
Abstract
Characterization of molecular mechanisms underlying pancreatic β-cell function in relation to glucose-stimulated insulin secretion is incomplete, especially with respect to global response in the nuclear environment. We focus on the characterization of proteins in the nuclear environment of β-cells after brief, high glucose stimulation. We compared purified nuclei derived from β-cells stimulated with 17 mM glucose for 0, 2, and 5 min using quantitative proteomics, a time frame that most likely does not result in translation of new protein in the cell. Among the differentially regulated proteins, we identified 20 components of the nuclear organization processes, including nuclear pore organization, ribonucleoprotein complex, and pre-mRNA transcription. We found alteration of the nuclear pore complex, together with calcium/calmodulin-binding chaperones that facilitate protein and RNA import or export to/from the nucleus to the cytoplasm. Putative insulin mRNA transcription-associated factors were identified among the regulated proteins, and they were cross-validated by Western blotting and confocal immunofluorescence imaging. Collectively, our data suggest that protein translocation between the nucleus and the cytoplasm is an important process, highly involved in the initial molecular mechanism underlying glucose-stimulated insulin secretion in pancreatic β-cells.
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Affiliation(s)
- Taewook Kang
- Protein Research Group, Department of Biochemistry and Molecular Biology , University of Southern Denmark , DK-5230 Odense M , Denmark
| | - Pia Jensen
- Protein Research Group, Department of Biochemistry and Molecular Biology , University of Southern Denmark , DK-5230 Odense M , Denmark
| | - Vita Solovyeva
- MEMPHYS-Centre for Biomembrane Physics, Department of Biochemistry and Molecular Biology , University of Southern Denmark , DK-5230 Odense M , Denmark
| | - Jonathan R Brewer
- MEMPHYS-Centre for Biomembrane Physics, Department of Biochemistry and Molecular Biology , University of Southern Denmark , DK-5230 Odense M , Denmark
| | - Martin R Larsen
- Protein Research Group, Department of Biochemistry and Molecular Biology , University of Southern Denmark , DK-5230 Odense M , Denmark
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22
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Wu N, Ren D, Li S, Ma W, Hu S, Jin Y, Xiao S. RCC2 over-expression in tumor cells alters apoptosis and drug sensitivity by regulating Rac1 activation. BMC Cancer 2018; 18:67. [PMID: 29321004 PMCID: PMC5763756 DOI: 10.1186/s12885-017-3908-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 12/13/2017] [Indexed: 12/31/2022] Open
Abstract
Background Small GTP binding protein Rac1 is a component of NADPH oxidases and is essential for superoxide-induced cell death. Rac1 is activated by guanine nucleotide exchange factors (GEFs), and this activation can be blocked by regulator of chromosome condensation 2 (RCC2), which binds the switch regions of Rac1 to prevent access from GEFs. Methods Three cancer cell lines with up- or down-regulation of RCC2 were used to evaluate cell proliferation, apoptosis, Rac1 signaling and sensitivity to a group of nine chemotherapeutic drugs. RCC2 expression in lung cancer and ovarian cancer were studied using immunochemistry stain of tumor tissue arrays. Results Forced RCC2 expression in tumor cells blocked spontaneous- or Staurosporine (STS)-induced apoptosis. In contrast, RCC2 knock down in these cells resulted in increased apoptosis to STS treatment. The protective activity of RCC2 on apoptosis was revoked by a constitutively activated Rac1, confirming a role of RCC2 in apoptosis by regulating Rac1. In an immunohistochemistry evaluation of tissue microarray, RCC2 was over-expressed in 88.3% of primary lung cancer and 65.2% of ovarian cancer as compared to non-neoplastic lung and ovarian tissues, respectively. Because chemotherapeutic drugs can kill tumor cells by activating Rac1/JNK pathway, we suspect that tumors with RCC2 overexpression would be more resistant to these drugs. Tumor cells with forced RCC2 expression indeed had significant difference in drug sensitivity compared to parental cells using a panel of common chemotherapeutic drugs. Conclusions RCC2 regulates apoptosis by blocking Rac1 signaling. RCC2 expression in tumor can be a useful marker for predicting chemotherapeutic response.
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Affiliation(s)
- Nan Wu
- Department of Medical Genetics, Harbin Medical University, Harbin, China
| | - Dong Ren
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Su Li
- Department of Medical Genetics, Harbin Medical University, Harbin, China
| | - Wenli Ma
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Shaoyan Hu
- Children's Hospital of Soochow University, Suzhou, China
| | - Yan Jin
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.,Department of Medical Genetics, Harbin Medical University, Harbin, China.,Key Laboratory of Cardiovascular Medicine Research, Harbin Medical University, Ministry of Education, Harbin, China
| | - Sheng Xiao
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
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23
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Behrens J, Solga R, Ziemann A, Rastetter RH, Berwanger C, Herrmann H, Noegel AA, Clemen CS. Coronin 1C-free primary mouse fibroblasts exhibit robust rearrangements in the orientation of actin filaments, microtubules and intermediate filaments. Eur J Cell Biol 2016; 95:239-51. [PMID: 27178841 DOI: 10.1016/j.ejcb.2016.04.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 04/25/2016] [Accepted: 04/25/2016] [Indexed: 01/01/2023] Open
Abstract
Coronin 1C is an established modulator of actin cytoskeleton dynamics. It has been shown to be involved in protrusion formation, cell migration and invasion. Here, we report the generation of primary fibroblasts from coronin 1C knock-out mice in order to investigate the impact of the loss of coronin 1C on cellular structural organisation. We demonstrate that the lack of coronin 1C not only affects the actin system, but also the microtubule and the vimentin intermediate filament networks. In particular, we show that the knock-out cells exhibit a reduced proliferation rate, impaired cell migration and protrusion formation as well as an aberrant subcellular localisation and function of mitochondria. Moreover, we demonstrate that coronin 1C specifically interacts with the non-α-helical amino-terminal domain ("head") of vimentin. Our data suggest that coronin 1C acts as a cytoskeletal integrator of actin filaments, microtubules and intermediate filaments.
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Affiliation(s)
- Juliane Behrens
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Roxana Solga
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Anja Ziemann
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Raphael H Rastetter
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931Cologne, Germany
| | - Carolin Berwanger
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Harald Herrmann
- Institute of Neuropathology, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Angelika A Noegel
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931Cologne, Germany
| | - Christoph S Clemen
- Center for Biochemistry, Institute of Biochemistry I, Medical Faculty, University of Cologne, 50931 Cologne, Germany.
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24
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Marei H, Carpy A, Woroniuk A, Vennin C, White G, Timpson P, Macek B, Malliri A. Differential Rac1 signalling by guanine nucleotide exchange factors implicates FLII in regulating Rac1-driven cell migration. Nat Commun 2016; 7:10664. [PMID: 26887924 PMCID: PMC4759627 DOI: 10.1038/ncomms10664] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 01/08/2016] [Indexed: 01/22/2023] Open
Abstract
The small GTPase Rac1 has been implicated in the formation and dissemination of tumours. Upon activation by guanine nucleotide exchange factors (GEFs), Rac1 associates with a variety of proteins in the cell thereby regulating various functions, including cell migration. However, activation of Rac1 can lead to opposing migratory phenotypes raising the possibility of exacerbating tumour progression when targeting Rac1 in a clinical setting. This calls for the identification of factors that influence Rac1-driven cell motility. Here we show that Tiam1 and P-Rex1, two Rac GEFs, promote Rac1 anti- and pro-migratory signalling cascades, respectively, through regulating the Rac1 interactome. In particular, we demonstrate that P-Rex1 stimulates migration through enhancing the interaction between Rac1 and the actin-remodelling protein flightless-1 homologue, to modulate cell contraction in a RhoA-ROCK-independent manner.
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Affiliation(s)
- Hadir Marei
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester M204BX, UK
| | - Alejandro Carpy
- Proteome Center Tuebingen, Interfaculty Institute for Cell Biology, University of Tuebingen, Tuebingen 72026, Germany
| | - Anna Woroniuk
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester M204BX, UK
| | - Claire Vennin
- Invasion and Metastasis Group, Garvan Institute of Medical Research, The Kinghorn Cancer Centre, Faculty of Medicine, St Vincent's Clinical School, University of New South Wales, Darlinghurst, New South Wales 2010, Australia
| | - Gavin White
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester M204BX, UK
| | - Paul Timpson
- Invasion and Metastasis Group, Garvan Institute of Medical Research, The Kinghorn Cancer Centre, Faculty of Medicine, St Vincent's Clinical School, University of New South Wales, Darlinghurst, New South Wales 2010, Australia
| | - Boris Macek
- Proteome Center Tuebingen, Interfaculty Institute for Cell Biology, University of Tuebingen, Tuebingen 72026, Germany
| | - Angeliki Malliri
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Manchester M204BX, UK
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25
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Tilley FC, Williamson RC, Race PR, Rendall TC, Bass MD. Integration of the Rac1- and actin-binding properties of Coronin-1C. Small GTPases 2015; 6:36-42. [PMID: 25862165 PMCID: PMC4601492 DOI: 10.4161/21541248.2014.992259] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
The coronin family of actin-binding proteins regulate actin branching by inhibiting Arp2/3. We recently reported 2 interactions that were unique to coronin-1C: binding of a Rac1 inhibitor, RCC2, to the unique linker region and Rac1 itself to the propeller domain in a manner that differs from that proposed for other coronins. Through these interactions coronin-1C redistributes Rac1 from the back of the cell to the leading edge for either activation or sequestration by the associated Rac1-inhibitor, RCC2. Here we investigate the relationship between the Rac1- and actin-binding properties of coronin-1C and find that, although actin appears to be involved in the retrafficking of Rac1, signaling by Rac1 lies upstream of the stress fiber-formation, for which the coronins were originally characterized.
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26
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Williamson RC, Bass MD. Comparing the Affinity of GTPase-binding Proteins using Competition Assays. J Vis Exp 2015. [PMID: 26484896 PMCID: PMC4705812 DOI: 10.3791/53254] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
In this protocol we demonstrate a method for comparing the competition between
GTPase-binding proteins. Such an approach is important for determining the
binding capabilities of GTPases for two reasons: The fact that all interactions
involve the same face of the GTPases means that binding events must be
considered in the context of competitors, and the fact that the bound nucleotide
must also be controlled means that conventional approaches such as
immunoprecipitation are unsuitable for GTPase biochemistry. The assay relies on
the use of purified proteins. Purified Rac1 immobilized on beads is used as the
bait protein, and can be loaded with GDP, a non-hydrolyzable version of GTP or
left nucleotide free, so that the signaling stage to be investigated can be
controlled. The binding proteins to be investigated are purified from mammalian
cells, to allow correct folding, by means of a GFP tag. Use of the same tag on
both proteins is important because not only does it allow rapid purification and
elution, but also allows detection of both competitors with the same antibody
during elution. This means that the relative amounts of the two bound proteins
can be determined accurately.
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Affiliation(s)
| | - Mark D Bass
- Department of Biomedical Science, University of Sheffield;
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27
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Swaminathan K, Stumpf M, Müller R, Horn AC, Schmidbauer J, Eichinger L, Müller-Taubenberger A, Faix J, Noegel AA. Coronin7 regulates WASP and SCAR through CRIB mediated interaction with Rac proteins. Sci Rep 2015; 5:14437. [PMID: 26411260 PMCID: PMC4585930 DOI: 10.1038/srep14437] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 08/28/2015] [Indexed: 11/14/2022] Open
Abstract
Coronin7 (CRN7) stabilizes F-actin and is a regulator of processes associated with the actin cytoskeleton. Its loss leads to defects in phagocytosis, motility and development. It harbors a CRIB (Cdc42- and Rac-interactive binding) domain in each of its WD repeat domains which bind to Rac GTPases preferably in their GDP-loaded forms. Expression of wild type CRN7 in CRN7 deficient cells rescued these defects, whereas proteins with mutations in the CRIB motifs which were associated with altered Rac binding were effective to varying degrees. The presence of one functional CRIB was sufficient to reestablish phagocytosis, cell motility and development. Furthermore, by molecular modeling and mutational analysis we identified the contact regions between CRN7 and the GTPases. We also identified WASP, SCAR and PAKa as downstream effectors in phagocytosis, development and cell surface adhesion, respectively, since ectopic expression rescued these functions.
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Affiliation(s)
- Karthic Swaminathan
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
| | - Maria Stumpf
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
| | - Rolf Müller
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
| | - Anna-Carolin Horn
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
| | - Julia Schmidbauer
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
| | - Ludwig Eichinger
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
| | | | - Jan Faix
- Department of Biophysical Chemistry, Medizinische Hochschule Hannover, 30623 Hannover, Germany
| | - Angelika A Noegel
- Center for Biochemistry, Medical Faculty, Center for Molecular Medicine Cologne (CMMC) and Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Köln, Germany
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28
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Williamson RC, Cowell CAM, Reville T, Roper JA, Rendall TCS, Bass MD. Coronin-1C Protein and Caveolin Protein Provide Constitutive and Inducible Mechanisms of Rac1 Protein Trafficking. J Biol Chem 2015; 290:15437-15449. [PMID: 25925950 PMCID: PMC4505459 DOI: 10.1074/jbc.m115.640367] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Indexed: 02/05/2023] Open
Abstract
Sustained directional fibroblast migration requires both polarized activation of the protrusive signal, Rac1, and redistribution of inactive Rac1 from the rear of the cell so that it can be redistributed or degraded. In this work, we determine how alternative endocytic mechanisms dictate the fate of Rac1 in response to the extracellular matrix environment. We discover that both coronin-1C and caveolin retrieve Rac1 from similar locations at the rear and sides of the cell. We find that coronin-1C-mediated extraction, which is responsible for Rac1 recycling, is a constitutive process that maintains Rac1 protein levels within the cell. In the absence of coronin-1C, the effect of caveolin-mediated endocytosis, which targets Rac1 for proteasomal degradation, becomes apparent. Unlike constitutive coronin-1C-mediated trafficking, caveolin-mediated Rac1 endocytosis is induced by engagement of the fibronectin receptor syndecan-4. Such an inducible endocytic/degradation mechanism would predict that, in the presence of fibronectin, caveolin defines regions of the cell that are resistant to Rac1 activation but, in the absence of fibronectin leaves more of the membrane susceptible to Rac1 activation and protrusion. Indeed, we demonstrate that fibronectin-stimulated activation of Rac1 is accelerated in the absence of caveolin and that, when caveolin is knocked down, polarization of active Rac1 is lost in FRET experiments and culminates in shunting migration in a fibrous fibronectin matrix. Although the concept of polarized Rac1 activity in response to chemoattractants has always been apparent, our understanding of the balance between recycling and degradation explains how polarity can be maintained when the chemotactic gradient has faded.
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Affiliation(s)
- Rosalind C Williamson
- School of Biochemistry and University of Bristol, University Walk, Bristol BS8 1TD, United Kingdom
| | - Christopher A M Cowell
- School of Biochemistry and University of Bristol, University Walk, Bristol BS8 1TD, United Kingdom
| | - Thomas Reville
- School of Biochemistry and University of Bristol, University Walk, Bristol BS8 1TD, United Kingdom
| | - James A Roper
- School of Biochemistry and University of Bristol, University Walk, Bristol BS8 1TD, United Kingdom
| | - Thomas C S Rendall
- Department of Engineering, University of Bristol, University Walk, Bristol BS8 1TD, United Kingdom
| | - Mark D Bass
- School of Biochemistry and University of Bristol, University Walk, Bristol BS8 1TD, United Kingdom; Centre for Membrane Interactions and Dynamics, Department of Biomedical Science, University of Sheffield, Western Bank, Sheffield S10 2TN, United Kingdom.
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