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Hornigold K, Baker MJ, Machin PA, Chetwynd SA, Johnsson AK, Pantarelli C, Islam P, Stammers M, Crossland L, Oxley D, Okkenhaug H, Walker S, Walker R, Segonds-Pichon A, Fukui Y, Malliri A, Welch HCE. The Rac-GEF Tiam1 controls integrin-dependent neutrophil responses. Front Immunol 2023; 14:1223653. [PMID: 38077328 PMCID: PMC10703174 DOI: 10.3389/fimmu.2023.1223653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 10/20/2023] [Indexed: 12/18/2023] Open
Abstract
Rac GTPases are required for neutrophil adhesion and migration, and for the neutrophil effector responses that kill pathogens. These Rac-dependent functions are impaired when neutrophils lack the activators of Rac, Rac-GEFs from the Prex, Vav, and Dock families. In this study, we demonstrate that Tiam1 is also expressed in neutrophils, governing focal complexes, actin cytoskeletal dynamics, polarisation, and migration, in a manner depending on the integrin ligand to which the cells adhere. Tiam1 is dispensable for the generation of reactive oxygen species but mediates degranulation and NETs release in adherent neutrophils, as well as the killing of bacteria. In vivo, Tiam1 is required for neutrophil recruitment during aseptic peritonitis and for the clearance of Streptococcus pneumoniae during pulmonary infection. However, Tiam1 functions differently to other Rac-GEFs. Instead of promoting neutrophil adhesion to ICAM1 and stimulating β2 integrin activity as could be expected, Tiam1 restricts these processes. In accordance with these paradoxical inhibitory roles, Tiam1 limits the fMLP-stimulated activation of Rac1 and Rac2 in adherent neutrophils, rather than activating Rac as expected. Tiam1 promotes the expression of several regulators of small GTPases and cytoskeletal dynamics, including αPix, Psd4, Rasa3, and Tiam2. It also controls the association of Rasa3, and potentially αPix, Git2, Psd4, and 14-3-3ζ/δ, with Rac. We propose these latter roles of Tiam1 underlie its effects on Rac and β2 integrin activity and on cell responses. Hence, Tiam1 is a novel regulator of Rac-dependent neutrophil responses that functions differently to other known neutrophil Rac-GEFs.
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Affiliation(s)
- Kirsti Hornigold
- Signalling Programme, Babraham Institute, Cambridge, United Kingdom
| | - Martin J. Baker
- Signalling Programme, Babraham Institute, Cambridge, United Kingdom
- Cell Signalling Group, Cancer Research UK Manchester Institute, University of Manchester, Macclesfield, United Kingdom
| | - Polly A. Machin
- Signalling Programme, Babraham Institute, Cambridge, United Kingdom
| | | | | | | | - Priota Islam
- Signalling Programme, Babraham Institute, Cambridge, United Kingdom
| | | | | | - David Oxley
- Mass Spectrometry Facility, Babraham Institute, Cambridge, United Kingdom
| | | | - Simon Walker
- Imaging Facility, Babraham Institute, Cambridge, United Kingdom
| | - Rachael Walker
- Flow Cytometry Facility, Babraham Institute, Cambridge, United Kingdom
| | | | - Yoshinori Fukui
- Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Angeliki Malliri
- Cell Signalling Group, Cancer Research UK Manchester Institute, University of Manchester, Macclesfield, United Kingdom
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Xie B, Zhao L, Zhang Z, Zhou C, Tian Y, Kang Y, Chen J, Wei H, Li L. CADM1 impairs the effect of miR-1246 on promoting cell cycle progression in chemo-resistant leukemia cells. BMC Cancer 2023; 23:955. [PMID: 37814227 PMCID: PMC10561441 DOI: 10.1186/s12885-023-11458-1] [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: 03/15/2023] [Accepted: 09/28/2023] [Indexed: 10/11/2023] Open
Abstract
The interruption of normal cell cycle execution acts as an important part to the development of leukemia. It was reported that microRNAs (miRNAs) were closely related to tumorigenesis and progression, and their aberrant expression had been demonstrated to play a crucial role in numerous types of cancer. Our previous study showed that miR-1246 was preferentially overexpressed in chemo-resistant leukemia cell lines, and participated in process of cell cycle progression and multidrug resistant regulation. However, the underlying mechanism remains unclear. In present study, bioinformatics prediction and dual luciferase reporter assay indicated that CADM1 was a direct target of miR-1246. Evidently decreased expression of CADM1 was observed in relapsed primary leukemia patients and chemo-resistant cell lines. Our results furtherly proved that inhibition of miR-1246 could significantly enhance drug sensitivity to Adriamycin (ADM), induce cell cycle arrest at G0/G1 phase, promote cell apoptosis, and relieve its suppression on CADM1 in K562/ADM and HL-60/RS cells. Interference with CADM1 could reduce the increased drug sensitivity induced by miR-1246 inhibition, and notably restore drug resistance by promoting cell cycle progression and cell survival via regulating CDKs/Cyclins complexes in chemo-resistant leukemia cells. Above all, our results demonstrated that CADM1 attenuated the role of miR-1246 in promoting cell cycle progression and cell survival, thus influencing multidrug resistance within chemo-resistant leukemia cells via CDKs/Cyclins. Higher expression of miR-1246 and lower expression of CADM1 might be risk factors for leukemia.
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Affiliation(s)
- Bei Xie
- Department of Immunology, School of Basic Medical Sciences, Lanzhou University, No. 199 Donggang West Road, Lanzhou, 730000, Gansu, China.
| | - Lei Zhao
- Shaanxi Meili Omni-Honesty Animal Health Co., Ltd, Xi'an, 710000, Shaanxi, China
| | - Zhewen Zhang
- Department of Immunology, School of Basic Medical Sciences, Lanzhou University, No. 199 Donggang West Road, Lanzhou, 730000, Gansu, China
| | - Cunmin Zhou
- The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Ye Tian
- The Second Hospital of Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Yingying Kang
- Department of Immunology, School of Basic Medical Sciences, Lanzhou University, No. 199 Donggang West Road, Lanzhou, 730000, Gansu, China
| | - Jing Chen
- Department of Immunology, School of Basic Medical Sciences, Lanzhou University, No. 199 Donggang West Road, Lanzhou, 730000, Gansu, China
| | - Hulai Wei
- Department of Immunology, School of Basic Medical Sciences, Lanzhou University, No. 199 Donggang West Road, Lanzhou, 730000, Gansu, China.
| | - Linjing Li
- The Second Hospital of Lanzhou University, Lanzhou, 730000, Gansu, China.
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Neinaa YMEH, El-Maadawy IH, Atteia IA, Mohamed DAEA. Cell adhesion molecule 1 expression in mycosis fungoides versus parapsoriasis versus inflammatory dermatosis: an immunohistochemical comparative study. Arch Dermatol Res 2023; 315:2403-2411. [PMID: 36943432 DOI: 10.1007/s00403-023-02600-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/26/2023] [Accepted: 02/28/2023] [Indexed: 03/23/2023]
Abstract
Cell adhesion molecule 1 (CADM1) is one of the immunoglobulin super family adhesion molecules, that is proposed to contribute in the pathogenesis of various types of cutaneous T-cell lymphoma, including mycosis fungoides (MF). In this work, we decided to examine the immunohistochemical expression of CADM1 in MF specimens compared to premycotic parapsoriasis, benign inflammatory dermatosis and normal control skin specimens. 125 participants were enrolled (50 MF, 25 parapsoriasis, 25 inflammatory dermatosis, and 25 healthy controls). Patients were selected from the Outpatient Clinic of Dermatology and Venereology Department, Tanta University Hospitals. From all, 4 mm punch skin biopsies were taken and examined for CADM1 immunohistochemical expression. The current study revealed statistically significant upregulation of CADM1 expression in MF specimens in comparison to parapsoriasis, inflammatory dermatosis, and normal control specimens. Additionally, there was statistically significant positive correlation between CADM1 expression and progression of TNMB staging of MF disease. Therefore, it is possible to recommend CADM1 as a beneficial diagnostic immunohistochemical marker for differentiation between early stages of MF and both the premycotic parapsoriasis and benign inflammatory dermatosis. Moreover, it may be of value in early detection of neoplastic transformation of parapsoriasis as well as in assessment of MF progression.
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Affiliation(s)
- Yomna Mazid El-Hamd Neinaa
- Dermatology and Venereology Department, Faculty of Medicine, Tanta University, Tanta, Egypt.
- Dermatopathology Unit, Faculty of Medicine, Tanta University, Tanta, Egypt.
| | - Iman Hamed El-Maadawy
- Dermatology and Venereology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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Wu X, Li Y, Zhang W, Zhang J, Chen B, Ge Z. RAC1, a Potential Diagnostic and Prognostic Marker for Diffuse Large B Cell Lymphoma. Cells 2022; 11:cells11244039. [PMID: 36552804 PMCID: PMC9776810 DOI: 10.3390/cells11244039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 11/27/2022] [Accepted: 11/28/2022] [Indexed: 12/15/2022] Open
Abstract
The gene changes for diagnosis and prognosis of diffuse large B cell lymphoma (DLBCL) still remain unclear. RAC1 was reported to be asso;ciated with the B cell receptor signal pathway, but its relations with DLBCL have not yet been systematically explored. In this study, we have conducted molecular, bioinformatics and clinical analyses by using publicly available data from The Cancer Genome Atlas (TCGA). Wilcoxon signed-rank test and logistic regression were performed to evaluate the association between RAC1 and clinical features in patients. Kaplan-Meier and Cox regression methods were used to examine the impacts of RAC1 expression level on overall survival, and a nomogram was performed to illustrate the correlation between RAC1 and the risk of DLBCL. Our results revealed that the expression level of RAC1 in DLBCL was higher than that in normal tissues or lymphadenitis. High-level expression of RAC1 was significantly associated with clinical stage, as well as being an independent factor affecting overall survival. RAC1 was negatively correlated with Bruton's tyrosine kinase (BTK). The association between RAC1 gene expression and the risk of DLBCL was presented in a nomogram. In conclusion, RAC1 expression patterns may be used to predict the development and prognosis of DLBCL.
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Affiliation(s)
- Xue Wu
- Department of Hematology, The Affiliated Zhongda Hospital, Institute of Hematology, Southeast University, Nanjing 210009, China
| | - Yuan Li
- Department of Oncology, School of Medicine, Southeast University, Nanjing 210009, China
| | - Wandong Zhang
- Department of Cellular & Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada
- Human Health Therapeutics Research Centre, National Research Council Canada, Ottawa, ON K1A 0R6, Canada
| | - Jing Zhang
- Department of Hematology, The Affiliated Zhongda Hospital, Institute of Hematology, Southeast University, Nanjing 210009, China
| | - Baoan Chen
- Department of Hematology, The Affiliated Zhongda Hospital, Institute of Hematology, Southeast University, Nanjing 210009, China
| | - Zheng Ge
- Department of Hematology, The Affiliated Zhongda Hospital, Institute of Hematology, Southeast University, Nanjing 210009, China
- Correspondence: ; Tel.: +86-025-83262468
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Kasai Y, Gan SP, Funaki T, Ohashi‐Kumagai Y, Tominaga M, Shiu S, Suzuki D, Matsubara D, Sakamoto T, Sakurai‐Yageta M, Ito T, Murakami Y. Trans-homophilic interaction of CADM1 promotes organ infiltration of T-cell lymphoma by adhesion to vascular endothelium. Cancer Sci 2022; 113:1669-1678. [PMID: 35213073 PMCID: PMC9128163 DOI: 10.1111/cas.15307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 01/23/2022] [Accepted: 02/04/2022] [Indexed: 11/28/2022] Open
Abstract
The initial step of organ infiltration of malignant cells is the interaction with host vascular endothelial cells, which is often mediated by specific combinations of cell adhesion molecules. Cell adhesion molecule 1 (CADM1) is overexpressed in adult T-cell leukemia/lymphoma (ATL) and provides a cell-surface diagnostic marker. CADM1 promotes the adhesion of ATL cells to vascular endothelial cells and multiple organ infiltration in mice. However, its binding partner on host cells has not yet been identified. In this study, we show that CADM1 promotes transendothelial migration of ATL cells in addition to the adhesion to vascular endothelial cells. Moreover, CADM1 enhances liver infiltration of mouse T-cell lymphoma cells, EL4, after tail vein injection, whereas a CADM1 mutant lacking adhesive activity did not. Among the known CADM1-binding proteins expressed in primary endothelial cells, only CADM1 and CADM4 could induce morphological extension of ATL cells when plated onto glass coated with these proteins. Furthermore, CADM1-mediated liver infiltration of EL4 cells was canceled in conventional and vascular endothelium-specific Cadm1 knockout mice, whereas it was not canceled in Cadm4 knockout mice. These results suggest that CADM1 on host vascular endothelial cells is required for organ infiltration of ATL and other T-cell lymphomas expressing CADM1.
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Affiliation(s)
- Yutaka Kasai
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Siew Pey Gan
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Toko Funaki
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Yuki Ohashi‐Kumagai
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Mizuki Tominaga
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Shu‐Jen Shiu
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Daisuke Suzuki
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Daisuke Matsubara
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
- Department of Diagnostic PathologyUniversity of TsukubaTsukubaJapan
| | - Takeharu Sakamoto
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
- Department of Cancer BiologyInstitute of Biomedical ScienceKansai Medical UniversityHirakataJapan
| | - Mika Sakurai‐Yageta
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
- Tohoku Medical Megabank OrganizationTohoku UniversitySendaiJapan
| | - Takeshi Ito
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
| | - Yoshinori Murakami
- Division of Molecular PathologyThe Institute of Medical ScienceThe University of TokyoTokyoJapan
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Yuan J, Kihara T, Kimura N, Yamasaki T, Yoshida M, Isozaki K, Ito A, Hirota S. CADM1 promotes adhesion to vascular endothelial cells and transendothelial migration in cultured GIST cells. Oncol Lett 2022; 23:86. [PMID: 35126728 PMCID: PMC8805184 DOI: 10.3892/ol.2022.13206] [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: 09/17/2021] [Accepted: 12/20/2021] [Indexed: 11/17/2022] Open
Abstract
Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the human gastrointestinal tract. Small intestinal GISTs appear to be associated with poorer prognosis and higher metastasis rate than gastric GISTs of the same size and mitotic index. Recently, we reported that cell adhesion molecule 1 (CADM1) is expressed specifically in most small intestinal GISTs, but not in most gastric GISTs, suggesting that this difference in CADM1 expression between gastric GISTs and small intestinal GISTs might influence the difference in clinical behavior between them. The aim of the present study was to examine whether high CADM1 expression affected proliferation, migration, invasion, adhesion to endothelial cells and transendothelial migration of cultured GIST cells by comparing original GIST-T1 cells with very low CADM1 expression with GIST-T1 cells with high CADM1 expression induced by CADM1 cDNA transfection (GIST-T1-CAD cells). GIST-T1-CAD cells had reduced ability to proliferate, migrate and invade compared with the original GIST-T1 cells, but showed significantly higher ability to adhere to human umbilical vein endothelial cells and migrate through endothelial cell monolayers. Thus, CADM1 may contribute to higher metastasis rates in small intestinal GISTs facilitating tumor cell adhesion to vascular endothelial cell and transendothelial migration of tumor cells. CADM1 might serve as a potential target for inhibition of metastasis in small intestinal GISTs.
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Affiliation(s)
- Jiayin Yuan
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Takako Kihara
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Neinei Kimura
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Takashi Yamasaki
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Makoto Yoshida
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Koji Isozaki
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka-Sayama, Osaka 589-8511, Japan
| | - Seiichi Hirota
- Department of Surgical Pathology, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan
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Yoshie O. CCR4 as a Therapeutic Target for Cancer Immunotherapy. Cancers (Basel) 2021; 13:cancers13215542. [PMID: 34771703 PMCID: PMC8583476 DOI: 10.3390/cancers13215542] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary CCR4 is a chemokine receptor selectively expressed on normal T cell subsets such as type 2 helper T cells, skin-homing T cells and regulatory T cells, and on skin-associated T cell malignancies such as adult T cell leukemia/lymphoma (ATLL), which is etiologically associated with human T lymphocyte virus type 1 (HTLV-1), and cutaneous T cell lymphomas (CTCLs). Mogamulizumab is a fully humanized and glyco-engineered monoclonal anti-CCR4 antibody used for the treatment of refractory/relapsed ATLL and CTCLs, often resulting in complete remission. The clinical applications of Mogamulizumab are now being extended to solid tumors, exploring the therapeutic effect of regulatory T cell depletion. This review overviews the expression of CCR4 in various T cell subsets, HTLV-1-infected T cells, ATLL and CTCLs, and the clinical applications of Mogamulizumab. Abstract CCR4 is a chemokine receptor mainly expressed by T cells. It is the receptor for two CC chemokine ligands, CCL17 and CCL22. Originally, the expression of CCR4 was described as highly selective for helper T type 2 (Th2) cells. Later, its expression was extended to other T cell subsets such as regulatory T (Treg) cells and Th17 cells. CCR4 has long been regarded as a potential therapeutic target for allergic diseases such as atopic dermatitis and bronchial asthma. Furthermore, the findings showing that CCR4 is strongly expressed by T cell malignancies such as adult T cell leukemia/lymphoma (ATLL) and cutaneous T cell lymphomas (CTCLs) have led to the development and clinical application of the fully humanized and glyco-engineered monoclonal anti-CCR4 Mogamulizumab in refractory/relapsed ATLL and CTCLs with remarkable successes. However, Mogamulizumab often induces severe adverse events in the skin possibly because of its efficient depletion of Treg cells. In particular, treatment with Mogamulizumab prior to allogenic hematopoietic stem cell transplantation (allo-HSCT), the only curative option of these T cell malignancies, often leads to severe glucocorticoid-refractory graft-versus-host diseases. The efficient depletion of Treg cells by Mogamulizumab has also led to its clinical trials in advanced solid tumors singly or in combination with immune checkpoint inhibitors. The main focus of this review is CCR4; its expression on normal and malignant T cells and its significance as a therapeutic target in cancer immunotherapy.
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Affiliation(s)
- Osamu Yoshie
- Health and Kampo Institute, Sendai 981-3205, Japan;
- Kindai University, Osaka 577-8502, Japan
- Aoinosono-Sendai Izumi Long-Term Health Care Facility, Sendai 981-3126, Japan
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8
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Abstract
In contrast to solid cancers, which often require genetic modifications and complex cellular reprogramming for effective metastatic dissemination, leukaemic cells uniquely possess the innate ability for migration and invasion. Dedifferentiated, malignant leukocytes retain the benign leukocytes' capacity for cell motility and survival in the circulation, while acquiring the potential for rapid and uncontrolled cell division. For these reasons, leukaemias, although not traditionally considered as metastatic diseases, are in fact models of highly efficient metastatic spread. Accordingly, they are often aggressive and challenging diseases to treat. In this Perspective, we discuss the key molecular processes that facilitate metastasis in a variety of leukaemic subtypes, the clinical significance of leukaemic invasion into specific tissues and the current pipeline of treatments targeting leukaemia metastasis.
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Affiliation(s)
- Andrew E Whiteley
- Department of Medicine, Duke University, Durham, NC, USA
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA
| | - Trevor T Price
- Department of Medicine, Duke University, Durham, NC, USA
| | - Gaia Cantelli
- European Molecular Biology Laboratory, European Bioinformatics Institute, Hinxton, UK
| | - Dorothy A Sipkins
- Department of Medicine, Duke University, Durham, NC, USA.
- Department of Pharmacology and Cancer Biology, Duke University, Durham, NC, USA.
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Saito-Sasaki N, Sawada Y, Okada E, Nakamura M. Cell Adhesion Molecule 1 (CADM1) Is an Independent Prognostic Factor in Patients with Cutaneous Squamous Cell Carcinoma. Diagnostics (Basel) 2021; 11:diagnostics11050830. [PMID: 34064472 PMCID: PMC8147986 DOI: 10.3390/diagnostics11050830] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 12/20/2022] Open
Abstract
Cell adhesion molecular 1 (CADM1) is a multifunctional cell adhesion molecule belonging to the immunoglobulin superfamily, which suppresses malignant solid tumor development. However, the correlation between CADM1 expression and prognosis in cutaneous squamous cell carcinoma (cSCC) patients remains unclear. In a retrospective analysis of 88 patients diagnosed with cSCC at our institution between January 2006 and December 2016, the degree of CADM1 expression in tumor cells was evaluated by immunostaining. Fifty-five and 33 patients had tumors with high and low CADM1 expression, respectively. Low CADM1 expression on the tumor was associated with poor differentiation, whereas the Kaplan–Meier curve and log-lank test indicated a favorable prognosis with high CADM1 expression. Multivariate analysis excluding the effect of the degree of differentiation and clinical stages showed that the hazard ratio (HR) of survival was significantly increased with low CADM1 expression. Thus, CADM1 expression is an independent prognostic factor for cSCC patients.
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Affiliation(s)
- Natsuko Saito-Sasaki
- Correspondence: (N.S.-S.); (Y.S.); Tel.: +81-93-691-7445 (N.S.-S. & Y.S.); Fax: +81-93-691-0907 (N.S.-S. & Y.S.)
| | - Yu Sawada
- Correspondence: (N.S.-S.); (Y.S.); Tel.: +81-93-691-7445 (N.S.-S. & Y.S.); Fax: +81-93-691-0907 (N.S.-S. & Y.S.)
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10
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Fragliasso V, Tameni A, Inghirami G, Mularoni V, Ciarrocchi A. Cytoskeleton Dynamics in Peripheral T Cell Lymphomas: An Intricate Network Sustaining Lymphomagenesis. Front Oncol 2021; 11:643620. [PMID: 33928032 PMCID: PMC8076600 DOI: 10.3389/fonc.2021.643620] [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: 12/18/2020] [Accepted: 03/17/2021] [Indexed: 12/04/2022] Open
Abstract
Defects in cytoskeleton functions support tumorigenesis fostering an aberrant proliferation and promoting inappropriate migratory and invasive features. The link between cytoskeleton and tumor features has been extensively investigated in solid tumors. However, the emerging genetic and molecular landscape of peripheral T cell lymphomas (PTCL) has unveiled several alterations targeting structure and function of the cytoskeleton, highlighting its role in cell shape changes and the aberrant cell division of malignant T cells. In this review, we summarize the most recent evidence about the role of cytoskeleton in PTCLs development and progression. We also discuss how aberrant signaling pathways, like JAK/STAT3, NPM-ALK, RhoGTPase, and Aurora Kinase, can contribute to lymphomagenesis by modifying the structure and the signaling properties of cytoskeleton.
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Affiliation(s)
- Valentina Fragliasso
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Annalisa Tameni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy.,Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Valentina Mularoni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Alessia Ciarrocchi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
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11
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Nakahata S, Syahrul C, Nakatake A, Sakamoto K, Yoshihama M, Nishikata I, Ukai Y, Matsuura T, Kameda T, Shide K, Kubuki Y, Hidaka T, Kitanaka A, Ito A, Takemoto S, Nakano N, Saito M, Iwanaga M, Sagara Y, Mochida K, Amano M, Maeda K, Sueoka E, Okayama A, Utsunomiya A, Shimoda K, Watanabe T, Morishita K. Clinical significance of soluble CADM1 as a novel marker for adult T-cell leukemia/lymphoma. Haematologica 2021; 106:532-542. [PMID: 32054656 PMCID: PMC7849584 DOI: 10.3324/haematol.2019.234096] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 02/07/2020] [Indexed: 12/13/2022] Open
Abstract
Adult T-cell leukemia/leukemia (ATLL) is an aggressive peripheral T-cell malignancy, caused by infection with the human T-cell leukemia virus type 1 (HTLV-1). We recently showed that the cell adhesion molecule 1 (CADM1), a member of the immunoglobulin superfamily, is specifically and consistently overexpressed in ATLL cells, and functions as a novel cell surface marker. In this study, we first show that a soluble form of CADM1 (sCADM1) is secreted from ATLL cells by mainly alternative splicing. After developing the Alpha linked immunosorbent assay (AlphaLISA) for sCADM1, we show that plasma sCADM1 concentrations gradually increased during disease progression from indolent to aggressive ATLL. Although other known biomarkers of tumor burden such as soluble interleukin-2 receptor α (sIL-2Rα) also increased with sCADM1 during ATLL progression, multivariate statistical analysis of biomarkers revealed that only plasma sCADM1 was selected as a specific biomarker for aggressive ATLL, suggesting that plasma sCADM1 may be a potential risk factor for aggressive ATLL. In addition, plasma sCADM1 is a useful marker for monitoring response to chemotherapy as well as for predicting relapse of ATLL. Furthermore, the change in sCADM1 concentration between indolent and aggressive type ATLL was more prominent than the change in the percentage of CD4+CADM1+ ATLL cells. As plasma sCADM1 values fell within normal ranges in HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) patients with higher levels of serum sIL-2Rα, the measurement of sCADM1 may become a useful tool to discriminate between ATLL and other inflammatory diseases, including HAM/TSP.
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Affiliation(s)
- Shingo Nakahata
- Department of Medical Sciences, University of Miyazaki, Miyazaki, Japan
| | - Chilmi Syahrul
- Department of Medical Sciences, University of Miyazaki, Miyazaki, Japan
| | - Ayako Nakatake
- Department of Medical Sciences, University of Miyazaki, Miyazaki, Japan
| | - Kuniyo Sakamoto
- Department of Medical Sciences, University of Miyazaki, Miyazaki, Japan
| | - Maki Yoshihama
- Department of Medical Sciences, University of Miyazaki, Miyazaki, Japan
| | - Ichiro Nishikata
- Department of Medical Sciences, University of Miyazaki, Miyazaki, Japan
| | | | | | - Takuro Kameda
- Department of Internal Medicine, University of Miyazaki, Miyazaki, Japan
| | - Kotaro Shide
- Department of Internal Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yoko Kubuki
- Department of Internal Medicine, University of Miyazaki, Miyazaki, Japan
| | - Tomonori Hidaka
- Department of Internal Medicine, University of Miyazaki, Miyazaki, Japan
| | - Akira Kitanaka
- Department of Laboratory Medicine, Kawasaki Medical School, Okayama, Japan
| | - Akihiko Ito
- Department of Pathology, Kindai University School of Medicine, Osaka, Japan
| | - Shigeki Takemoto
- National Hospital Organization Kumamoto Medical Center, Kumamoto, Japan
| | - Nobuaki Nakano
- Department of Hematology, Imamura General Hospital, Kagoshima, Japan
| | | | - Masako Iwanaga
- Dept of Frontier Life Science, Nagasaki University Graduate School of Biomedical Sciences, Japan
| | - Yasuko Sagara
- Japanese Red Cross Kyushu Block Blood Center, Fukuoka, Japan
| | - Kosuke Mochida
- Department of Dermatology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Masahiro Amano
- Department of Dermatology, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Kouichi Maeda
- Internal Medicine, National Hospital Organization Miyakonojo Medical Center, Miyazaki, Japan
| | - Eisaburo Sueoka
- Department of Laboratory Medicine, Saga University Hospital, Saga, Japan
| | - Akihiko Okayama
- Dept. of Infectious Diseases and Laboratory Medicine, University of Miyazaki, Miyazaki, Japan
| | - Atae Utsunomiya
- Department of Hematology, Imamura General Hospital, Kagoshima, Japan
| | - Kazuya Shimoda
- Department of Internal Medicine, University of Miyazaki, Miyazaki, Japan
| | - Toshiki Watanabe
- Department of Computational Biology and Medical Sciences, University of Tokyo, Japan
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12
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Kjærner‐Semb E, Edvardsen RB, Ayllon F, Vogelsang P, Furmanek T, Rubin CJ, Veselov AE, Nilsen TO, McCormick SD, Primmer CR, Wargelius A. Comparison of anadromous and landlocked Atlantic salmon genomes reveals signatures of parallel and relaxed selection across the Northern Hemisphere. Evol Appl 2021; 14:446-461. [PMID: 33664787 PMCID: PMC7896726 DOI: 10.1111/eva.13129] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/21/2022] Open
Abstract
Most Atlantic salmon (Salmo salar L.) populations follow an anadromous life cycle, spending early life in freshwater, migrating to the sea for feeding, and returning to rivers to spawn. At the end of the last ice age ~10,000 years ago, several populations of Atlantic salmon became landlocked. Comparing their genomes to their anadromous counterparts can help identify genetic variation related to either freshwater residency or anadromy. The objective of this study was to identify consistently divergent loci between anadromous and landlocked Atlantic salmon strains throughout their geographical distribution, with the long-term aim of identifying traits relevant for salmon aquaculture, including fresh and seawater growth, omega-3 metabolism, smoltification, and disease resistance. We used a Pool-seq approach (n = 10-40 individuals per population) to sequence the genomes of twelve anadromous and six landlocked Atlantic salmon populations covering a large part of the Northern Hemisphere and conducted a genomewide association study to identify genomic regions having been under different selection pressure in landlocked and anadromous strains. A total of 28 genomic regions were identified and included cadm1 on Chr 13 and ppargc1a on Chr 18. Seven of the regions additionally displayed consistently reduced heterozygosity in fish obtained from landlocked populations, including the genes gpr132, cdca4, and sertad2 on Chr 15. We also found 16 regions, including igf1 on Chr 17, which consistently display reduced heterozygosity in the anadromous populations compared to the freshwater populations, indicating relaxed selection on traits associated with anadromy in landlocked salmon. In conclusion, we have identified 37 regions which may harbor genetic variation relevant for improving fish welfare and quality in the salmon farming industry and for understanding life-history traits in fish.
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Affiliation(s)
| | | | | | | | | | | | - Alexey E. Veselov
- Institute of Biology of the Karelian Research CentrePetrozavodskRussia
| | - Tom Ole Nilsen
- Department of Biological SciencesUniversity of BergenBergenNorway
| | - Stephen D. McCormick
- Conte Anadromous Fish Research LaboratoryU.S. Geological Survey, Leetown Science CenterTurners FallsMAUSA
| | - Craig R. Primmer
- Organismal and Evolutionary Biology Research ProgramFaculty of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland
- Institute of BiotechnologyUniversity of HelsinkiHelsinkiFinland
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13
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Funaki T, Ito T, Tanei ZI, Goto A, Niki T, Matsubara D, Murakami Y. CADM1 promotes malignant features of small-cell lung cancer by recruiting 4.1R to the plasma membrane. Biochem Biophys Res Commun 2021; 534:172-178. [PMID: 33298314 DOI: 10.1016/j.bbrc.2020.11.121] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 11/30/2020] [Indexed: 02/07/2023]
Abstract
Cell adhesion molecule 1 (CADM1), which mediates intercellular adhesion between epithelial cells, is shown to be highly expressed in small-cell lung cancer (SCLC) and to enhance tumorigenicity of SCLC cells in nude mice. Here, we investigated the molecular mechanism underlying the oncogenic role of CADM1 in SCLC. CADM1 promoted colony formation of SCLC cells in soft agar. Analysis of deletion and point mutants of the conserved protein-binding motifs in CADM1 revealed that the 4.1 protein-binding motif in the cytoplasmic domain is responsible for the promotion of colony formation. Among the actin-binding 4.1 proteins, 4.1R was the only protein whose localization to the plasma membrane is dependent on CADM1 expression in SCLC cells. Knockdown of 4.1R suppressed the colony formation enhanced by CADM1, suggesting that 4.1R is required for the oncogenic role of CADM1 in SCLC. In primary SCLC, CADM1 expression was correlated with membranous localization of 4.1R, as was observed in a SCLC cell line. Moreover, membranous co-localization of CADM1 and 4.1R was associated with more advanced tumor stage. These results suggest that the formation of CADM1-4.1R complex would promote malignant features of SCLC.
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Affiliation(s)
- Toko Funaki
- Division of Molecular Pathology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Takeshi Ito
- Division of Molecular Pathology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Zen-Ichi Tanei
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Akiteru Goto
- Department of Cellular and Organ Pathology, Graduate School of Medicine, Akita University, Akita, Japan
| | - Toshiro Niki
- Department of Integrative Pathology, Jichi Medical University, Shimotsuke, Japan
| | - Daisuke Matsubara
- Division of Molecular Pathology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Department of Integrative Pathology, Jichi Medical University, Shimotsuke, Japan
| | - Yoshinori Murakami
- Division of Molecular Pathology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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14
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Sawada Y, Mashima E, Saito-Sasaki N, Nakamura M. The Role of Cell Adhesion Molecule 1 (CADM1) in Cutaneous Malignancies. Int J Mol Sci 2020; 21:E9732. [PMID: 33419290 PMCID: PMC7766610 DOI: 10.3390/ijms21249732] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 12/11/2020] [Accepted: 12/16/2020] [Indexed: 12/22/2022] Open
Abstract
Cell adhesion ability is one of the components to establish cell organization and shows a great contribution to human body construction consisting of various types of cells mixture to orchestrate tissue specific function. The cell adhesion molecule 1 (CADM1) is a molecule of cell adhesion with multiple functions and has been identified as a tumor suppressor gene. CADM1 has multifunctions on the pathogenesis of malignancies, and other normal cells such as immune cells. However, little is known about the function of CADM1 on cutaneous cells and cutaneous malignancies. CADM1 plays an important role in connecting cells with each other, contacting cells to deliver their signal, and acting as a scaffolding molecule for other immune cells to develop their immune responses. A limited number of studies reveal the contribution of CADM1 on the development of cutaneous malignancies. Solid cutaneous malignancies, such as cutaneous squamous cell carcinoma and malignant melanoma, reduce their CADM1 expression to promote the invasion and metastasis of the tumor. On the contrary to these cutaneous solid tumors except for Merkel cell carcinoma, cutaneous lymphomas, such as adult-T cell leukemia/lymphoma, mycosis fungoides, and Sézary syndrome, increase their CADM1 expression for the development of tumor environment. Based on the role of CADM1 in the etiology of tumor development, the theory of CADM1 contribution will desirably be applied to skin tumors according to other organ malignancies, however, the characteristics of skin as a multicomponent peripheral organ should be kept in mind to conclude their prognoses.
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Affiliation(s)
- Yu Sawada
- Department of Dermatology, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 807-8555, Japan; (E.M.); (N.S.-S.); (M.N.)
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15
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Maltas J, Reed H, Porter A, Malliri A. Mechanisms and consequences of dysregulation of the Tiam family of Rac activators in disease. Biochem Soc Trans 2020; 48:2703-2719. [PMID: 33200195 DOI: 10.1042/bst20200481] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 10/16/2020] [Accepted: 10/16/2020] [Indexed: 12/14/2022]
Abstract
The Tiam family proteins - Tiam1 and Tiam2/STEF - are Rac1-specific Guanine Nucleotide Exchange Factors (GEFs) with important functions in epithelial, neuronal, immune and other cell types. Tiam GEFs regulate cellular migration, proliferation and survival, mainly through activating and directing Rac1 signalling. Dysregulation of the Tiam GEFs is significantly associated with human diseases including cancer, immunological and neurological disorders. Uncovering the mechanisms and consequences of dysregulation is therefore imperative to improving the diagnosis and treatment of diseases. Here we compare and contrast the subcellular localisation and function of Tiam1 and Tiam2/STEF, and review the evidence for their dysregulation in disease.
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Affiliation(s)
- Joe Maltas
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, U.K
| | - Hannah Reed
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, U.K
| | - Andrew Porter
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, U.K
| | - Angeliki Malliri
- Cell Signalling Group, Cancer Research UK Manchester Institute, The University of Manchester, Alderley Park SK10 4TG, U.K
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16
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Maali Y, Journo C, Mahieux R, Dutartre H. Microbial Biofilms: Human T-cell Leukemia Virus Type 1 First in Line for Viral Biofilm but Far Behind Bacterial Biofilms. Front Microbiol 2020; 11:2041. [PMID: 33042035 PMCID: PMC7523422 DOI: 10.3389/fmicb.2020.02041] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 08/03/2020] [Indexed: 12/25/2022] Open
Abstract
Human T-cell leukemia virus type 1 (HTLV-1) is a retrovirus associated with adult T-cell leukemia (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). To date, it is the unique published example of a virus able to form a biofilm at the surface of infected cells. Deeply studied in bacteria, bacterial biofilms represent multicellular assemblies of bacteria in contact with a surface and shielded by the extracellular matrix (ECM). Microbial lifestyle in biofilms, either viral or bacterial, is opposed structurally and physiologically to an isolated lifestyle, in which viruses or bacteria freely float in their environment. HTLV-1 biofilm formation is believed to be promoted by viral proteins, mainly Tax, through remodeling of the ECM of the infected cells. HTLV-1 biofilm has been linked to cell-to-cell transmission of the virus. However, in comparison to bacterial biofilms, very little is known on kinetics of viral biofilm formation or dissemination, but also on its pathophysiological roles, such as escape from immune detection or therapeutic strategies, as well as promotion of leukemogenesis. The switch between production of cell-free isolated virions and cell-associated viral biofilm, although not fully apprehended yet, remains a key step to understand HTLV-1 infection and pathogenesis.
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Affiliation(s)
- Yousef Maali
- CIRI - Centre International de Recherche en Infectiologie, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS Lyon, Lyon, France
| | - Chloé Journo
- CIRI - Centre International de Recherche en Infectiologie, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS Lyon, Lyon, France
| | - Renaud Mahieux
- CIRI - Centre International de Recherche en Infectiologie, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS Lyon, Lyon, France
| | - Hélène Dutartre
- CIRI - Centre International de Recherche en Infectiologie, Univ Lyon, Université Claude Bernard Lyon 1, Inserm, U1111, CNRS, UMR5308, ENS Lyon, Lyon, France
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17
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Development of anti-human CADM1 monoclonal antibodies as a potential therapy for adult T-cell leukemia/lymphoma. Int J Hematol 2020; 112:496-503. [PMID: 32656636 DOI: 10.1007/s12185-020-02939-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 01/12/2023]
Abstract
Adult T-cell leukemia/lymphoma (ATLL) is a highly invasive and refractory T-cell malignancy, with poor prognosis. We previously identified that cell adhesion molecule 1 (CADM1) is overexpressed consistently in ATLL cells, and that CADM1 expression increases the adhesion capacity of ATLL cells to endothelial cells and promotes the organ invasion of ATLL cells in a xenograft mouse model. In this study, we first show that newly developed several anti-human CADM1 antibodies, which were complete human IgG antibodies generated by phage display method, specifically recognize CADM1 on ATLL cells. Although most of the CADM1 antibodies did not have a direct cytotoxic effect against CADM1-positive ATLL cells, clone 089-084 exhibited weak but significant antibody-dependent cell-mediated cytotoxic activity. Moreover, clone 103-189 effectively inhibits the interaction between endothelial cells and CADM1-positive ATLL cells. Furthermore, in mice bearing intra-splenic transplantation of EL4 mouse lymphoma cells expressing CADM1, the treatment of 103-189 significantly suppressed the organ invasion of CADM1-positive EL4 cells, resulting in improved survival time of mice. Therefore, since the anti-CADM1 antibody may be useful for the suppression of organ invasion in ATLL patients, combination use of the anti-CADM1 antibody with chemotherapy drugs could be beneficial for the efficient elimination of ATLL cells.
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18
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Guan X, Guan X, Dong C, Jiao Z. Rho GTPases and related signaling complexes in cell migration and invasion. Exp Cell Res 2020; 388:111824. [PMID: 31926148 DOI: 10.1016/j.yexcr.2020.111824] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 12/16/2022]
Abstract
Cell migration and invasion play an important role in the development of cancer. Cell migration is associated with several specific actin filament-based structures, including lamellipodia, filopodia, invadopodia and blebs, and with cell-cell adhesion, cell-extracellular matrix adhesion. Migration occurs via different modes, human epithelial cancer cells mainly migrate collectively, while in vivo imaging studies in laboratory animals have found that most cells migrate as single cells. Rho GTPases play an important role in the process of cell migration, and several Rho GTPase-related signaling complexes are also involved. However, the exact mechanism by which these signaling complexes act remains unclear. This paper reviews how Rho GTPases and related signaling complexes interact with other proteins, how their expression is regulated, how tumor microenvironment-related factors play a role in invasion and metastasis, and the mechanism of these complex signaling networks in cell migration and invasion.
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Affiliation(s)
- Xiaoying Guan
- Pathology Department, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Xiaoli Guan
- General Medicine Department, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Chi Dong
- Pathology Department, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China
| | - Zuoyi Jiao
- The First Department of General Surgery, Lanzhou University Second Hospital, Lanzhou, 730030, Gansu, China.
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19
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RHO Family GTPases in the Biology of Lymphoma. Cells 2019; 8:cells8070646. [PMID: 31248017 PMCID: PMC6678807 DOI: 10.3390/cells8070646] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 06/10/2019] [Accepted: 06/20/2019] [Indexed: 02/07/2023] Open
Abstract
RHO GTPases are a class of small molecules involved in the regulation of several cellular processes that belong to the RAS GTPase superfamily. The RHO family of GTPases includes several members that are further divided into two different groups: typical and atypical. Both typical and atypical RHO GTPases are critical transducers of intracellular signaling and have been linked to human cancer. Significantly, both gain-of-function and loss-of-function mutations have been described in human tumors with contradicting roles depending on the cell context. The RAS family of GTPases that also belong to the RAS GTPase superfamily like the RHO GTPases, includes arguably the most frequently mutated genes in human cancers (K-RAS, N-RAS, and H-RAS) but has been extensively described elsewhere. This review focuses on the role of RHO family GTPases in human lymphoma initiation and progression.
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20
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Liu X, Golden LC, Lopez JA, Shepherd TR, Yu L, Fuentes EJ. Conformational Dynamics and Cooperativity Drive the Specificity of a Protein-Ligand Interaction. Biophys J 2019; 116:2314-2330. [PMID: 31146922 PMCID: PMC6588728 DOI: 10.1016/j.bpj.2019.05.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 05/02/2019] [Accepted: 05/07/2019] [Indexed: 01/01/2023] Open
Abstract
Molecular recognition is critical for the fidelity of signal transduction in biology. Conversely, the disruption of protein-protein interactions can lead to disease. Thus, comprehension of the molecular determinants of specificity is essential for understanding normal biological signaling processes and for the development of precise therapeutics. Although high-resolution structures have provided atomic details of molecular interactions, much less is known about the influence of cooperativity and conformational dynamics. Here, we used the Tiam2 PSD-95/Dlg/ZO-1 (PDZ) domain and a quadruple mutant (QM), engineered by swapping the identity of four residues important for specificity in the Tiam1 PDZ into the Tiam2 PDZ domain, as a model system to investigate the role of cooperativity and dynamics in PDZ ligand specificity. Surprisingly, equilibrium binding experiments found that the ligand specificity of the Tiam2 QM was switched to that of the Tiam1 PDZ. NMR-based studies indicated that Tiam2 QM PDZ, but not other mutants, had extensive microsecond to millisecond motions distributed throughout the entire domain suggesting structural cooperativity between the mutated residues. Thermodynamic analyses revealed energetic cooperativity between residues in distinct specificity subpockets that was dependent upon the identity of the ligand, indicating a context-dependent binding mechanism. Finally, isothermal titration calorimetry experiments showed distinct entropic signatures along the mutational trajectory from the Tiam2 wild-type to the QM PDZ domain. Collectively, our studies provide unique insights into how structure, conformational dynamics, and thermodynamics combine to modulate ligand-binding specificity and have implications for the evolution, regulation, and design of protein-ligand interactions.
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Affiliation(s)
- Xu Liu
- Department of Biochemistry, University of Iowa, Iowa City, Iowa
| | - Lisa C Golden
- Department of Biochemistry, University of Iowa, Iowa City, Iowa
| | - Josue A Lopez
- Department of Biochemistry, University of Iowa, Iowa City, Iowa
| | | | - Liping Yu
- Department of Biochemistry, University of Iowa, Iowa City, Iowa; Carver College of Medicine Medical Nuclear Magnetic Resonance Facility, University of Iowa, Iowa City, Iowa
| | - Ernesto J Fuentes
- Department of Biochemistry, University of Iowa, Iowa City, Iowa; Holden Comprehensive Cancer Center, University of Iowa, Iowa City, Iowa.
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21
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Acuna-Villaorduna A, Gonzalez-Lugo J, Ye BH, Adrianzen Herrera DA, Sica RA, Shah U, Shah N, Kornblum N, Braunschweig I, Derman O, Mantzaris I, Shastri A, Wang Y, Verma A, Zalta B, Janakiram M. High prevalence of pulmonary findings in computed tomographies of HTLV-1-infected patients with and without adult-T cell leukemia/lymphoma - implications for staging. Leuk Lymphoma 2019; 60:3272-3276. [PMID: 31204876 DOI: 10.1080/10428194.2019.1627543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Lung involvement has been reported in HTLV-1 carriers and in patients with ATLL. Whether there are differences in the pattern of lung involvement between ATLL and HTLV carriers in North American patients is unknown. We aimed to compare CT pulmonary findings among patients with HTLV-1 infection with and without ATLL. Among 140 patients with HTLV-1 diagnosis, 97 had CT chest available. Of these, 72 (74.2%) had ATLL and 25 (25.8%) did not have ATLL. CT chest abnormalities were present in 90 (92.8%) participants (94.4% in ATLL; 88% in non-ATLL). Higher rates of lymphadenopathy (69.4% versus 24%, p < .01) and lower rates of bronchiectasis (25% versus 48%, p = .04) were seen in ATLL compared to non-ATLL. Our study supports that staging of lung involvement in ATLL should consider HTLV-associated pulmonary findings as not all CT chest abnormalities necessarily represent malignant infiltration.
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Affiliation(s)
| | | | - B Hilda Ye
- Yeshiva University Albert Einstein College of Medicine, Bronx, NY, USA
| | | | | | - Urvi Shah
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Nishi Shah
- Montefiore Hospital and Medical Center, Bronx, NY, USA
| | - Noah Kornblum
- Department of Oncology, Montefiore Medical Center, Bronx, NY, USA
| | | | - Olga Derman
- Department of Oncology, Montefiore Medical Center, Bronx, NY, USA
| | | | - Aditi Shastri
- Department of Oncology, Montefiore Medical Center, Bronx, NY, USA
| | - Yanhua Wang
- Department of Pathology, Montefiore Medical Center, Bronx, NY, USA
| | - Amit Verma
- Department of Oncology, Montefiore Einstein Center for Cancer Care, Bronx, NY, USA
| | | | - Murali Janakiram
- Department of Oncology, Montefiore Medical Center, Bronx, NY, USA
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22
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Chung EY, Mai Y, Shah UA, Wei Y, Ishida E, Kataoka K, Ren X, Pradhan K, Bartholdy B, Wei X, Zou Y, Zhang J, Ogawa S, Steidl U, Zang X, Verma A, Janakiram M, Ye BH. PAK Kinase Inhibition Has Therapeutic Activity in Novel Preclinical Models of Adult T-Cell Leukemia/Lymphoma. Clin Cancer Res 2019; 25:3589-3601. [PMID: 30862694 DOI: 10.1158/1078-0432.ccr-18-3033] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 01/11/2019] [Accepted: 03/06/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE To evaluate therapeutic activity of PAK inhibition in ATLL and to characterize the role of PAK isoforms in cell proliferation, survival, and adhesion of ATLL cells in preclinical models. EXPERIMENTAL DESIGN Frequency and prognostic impact of PAK2 amplification were evaluated in an ATLL cohort of 370 cases. Novel long-term cultures and in vivo xenograft models were developed using primary ATLL cells from North American patients. Two PAK inhibitors were used to block PAK kinase activity pharmacologically. siRNA-based gene silencing approach was used to genetically knockdown (KD) PAK1 and PAK2 in ATLL cell lines. RESULTS PAK1/2/4 are the three most abundantly expressed PAK family members in ATLL. PAK2 amplifications are seen in 24% of ATLLs and are associated with worse prognosis in a large patient cohort. The pan-PAK inhibitor PF-3758309 (PF) has strong in vitro and in vivo activity in a variety of ATLL preclinical models. These activities of PF are likely attributed to its ability to target several PAK isoforms simultaneously because genetic silencing of either PAK1 or PAK2 produced more modest effects. PAK2 plays a major role in CADM1-mediated stromal interaction, which is an important step in systemic dissemination of the disease. This finding is consistent with the observation that PAK2 amplification is more frequent in aggressive ATLLs and correlates with inferior outcome. CONCLUSIONS PAK2, a gene frequently amplified in ATLL, facilitates CADM1-mediated stromal interaction and promotes survival of ATLL cells. Taken together, PAK inhibition may hold significant promise as a targeted therapy for aggressive ATLLs.
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Affiliation(s)
- Elaine Y Chung
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Yun Mai
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Urvi A Shah
- Department of Oncology, Montefiore Medical Center, Bronx, New York
| | - Yongqiang Wei
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York.,Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Elise Ishida
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Keisuke Kataoka
- Division of Molecular Oncology, National Cancer Center Research Institute, Tokyo, Japan
| | - Xiaoxin Ren
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York
| | - Kith Pradhan
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Boris Bartholdy
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Xiaolei Wei
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York.,Department of Hematology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yiyu Zou
- Department of Oncology, Montefiore Medical Center, Bronx, New York
| | - Jinghang Zhang
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York
| | - Seishi Ogawa
- Department of Pathology and Tumor Biology, Kyoto University, Kyoto, Japan
| | - Ulrich Steidl
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York
| | - Xingxing Zang
- Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York
| | - Amit Verma
- Department of Oncology, Montefiore Medical Center, Bronx, New York.,Department of Microbiology & Immunology, Albert Einstein College of Medicine, Bronx, New York
| | - Murali Janakiram
- Department of Oncology, Montefiore Medical Center, Bronx, New York
| | - B Hilda Ye
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, New York.
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23
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Abstract
Fibrosis is a medical condition characterized by an excessive deposition of extracellular matrix compounds such as collagen in tissues. Fibrotic lesions are present in many diseases and can affect all organs. The excessive extracellular matrix accumulation in these conditions can often have serious consequences and in many cases be life-threatening. A typical event seen in many fibrotic conditions is a profound accumulation of mast cells (MCs), suggesting that these cells can contribute to the pathology. Indeed, there is now substantialv evidence pointing to an important role of MCs in fibrotic disease. However, investigations from various clinical settings and different animal models have arrived at partly contradictory conclusions as to how MCs affect fibrosis, with many studies suggesting a detrimental role of MCs whereas others suggest that MCs can be protective. Here, we review the current knowledge of how MCs can affect fibrosis.
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Affiliation(s)
- Peter Bradding
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, University of Leicester, Leicester, UK
| | - Gunnar Pejler
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.,Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden
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24
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Liu X, Fuentes EJ. Emerging Themes in PDZ Domain Signaling: Structure, Function, and Inhibition. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2019; 343:129-218. [PMID: 30712672 PMCID: PMC7185565 DOI: 10.1016/bs.ircmb.2018.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Post-synaptic density-95, disks-large and zonula occludens-1 (PDZ) domains are small globular protein-protein interaction domains widely conserved from yeast to humans. They are composed of ∼90 amino acids and form a classical two α-helical/six β-strand structure. The prototypical ligand is the C-terminus of partner proteins; however, they also bind internal peptide sequences. Recent findings indicate that PDZ domains also bind phosphatidylinositides and cholesterol. Through their ligand interactions, PDZ domain proteins are critical for cellular trafficking and the surface retention of various ion channels. In addition, PDZ proteins are essential for neuronal signaling, memory, and learning. PDZ proteins also contribute to cytoskeletal dynamics by mediating interactions critical for maintaining cell-cell junctions, cell polarity, and cell migration. Given their important biological roles, it is not surprising that their dysfunction can lead to multiple disease states. As such, PDZ domain-containing proteins have emerged as potential targets for the development of small molecular inhibitors as therapeutic agents. Recent data suggest that the critical binding function of PDZ domains in cell signaling is more than just glue, and their binding function can be regulated by phosphorylation or allosterically by other binding partners. These studies also provide a wealth of structural and biophysical data that are beginning to reveal the physical features that endow this small modular domain with a central role in cell signaling.
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Affiliation(s)
- Xu Liu
- Department of Biochemistry, University of Iowa, Iowa City, IA, United States
| | - Ernesto J. Fuentes
- Department of Biochemistry, University of Iowa, Iowa City, IA, United States
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, United States
- Corresponding author: E-mail:
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25
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Durand-Onaylı V, Haslauer T, Härzschel A, Hartmann TN. Rac GTPases in Hematological Malignancies. Int J Mol Sci 2018; 19:ijms19124041. [PMID: 30558116 PMCID: PMC6321480 DOI: 10.3390/ijms19124041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/11/2018] [Accepted: 12/12/2018] [Indexed: 12/22/2022] Open
Abstract
Emerging evidence suggests that crosstalk between hematologic tumor cells and the tumor microenvironment contributes to leukemia and lymphoma cell migration, survival, and proliferation. The supportive tumor cell-microenvironment interactions and the resulting cellular processes require adaptations and modulations of the cytoskeleton. The Rac subfamily of the Rho family GTPases includes key regulators of the cytoskeleton, with essential functions in both normal and transformed leukocytes. Rac proteins function downstream of receptor tyrosine kinases, chemokine receptors, and integrins, orchestrating a multitude of signals arising from the microenvironment. As such, it is not surprising that deregulation of Rac expression and activation plays a role in the development and progression of hematological malignancies. In this review, we will give an overview of the specific contribution of the deregulation of Rac GTPases in hematologic malignancies.
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Affiliation(s)
- Valerie Durand-Onaylı
- Department of Internal Medicine III with Hematology, Medical Oncology, Hemostaseology, Infectious Disease, Rheumatology, Oncologic Center, Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Paracelsus Medical University, Cancer Cluster Salzburg, 5020 Salzburg, Austria.
| | - Theresa Haslauer
- Department of Internal Medicine III with Hematology, Medical Oncology, Hemostaseology, Infectious Disease, Rheumatology, Oncologic Center, Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Paracelsus Medical University, Cancer Cluster Salzburg, 5020 Salzburg, Austria.
| | - Andrea Härzschel
- Department of Internal Medicine III with Hematology, Medical Oncology, Hemostaseology, Infectious Disease, Rheumatology, Oncologic Center, Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Paracelsus Medical University, Cancer Cluster Salzburg, 5020 Salzburg, Austria.
| | - Tanja Nicole Hartmann
- Department of Internal Medicine III with Hematology, Medical Oncology, Hemostaseology, Infectious Disease, Rheumatology, Oncologic Center, Salzburg Cancer Research Institute-Laboratory for Immunological and Molecular Cancer Research (SCRI-LIMCR), Paracelsus Medical University, Cancer Cluster Salzburg, 5020 Salzburg, Austria.
- Department of Hematology, Oncology and Stem Cell Transplantation, Faculty of Medicine and Medical Center, University of Freiburg, 79106 Freiburg, Germany.
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26
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Yuki A, Shinkuma S, Hayashi R, Fujikawa H, Kato T, Homma E, Hamade Y, Onodera O, Matsuoka M, Shimizu H, Iwata H, Abe R. CADM1 is a diagnostic marker in early-stage mycosis fungoides: Multicenter study of 58 cases. J Am Acad Dermatol 2018; 79:1039-1046. [DOI: 10.1016/j.jaad.2018.06.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 05/30/2018] [Accepted: 06/06/2018] [Indexed: 12/11/2022]
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27
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Kimura R, Yoneshige A, Hagiyama M, Otani T, Inoue T, Shiraishi N, Yanagihara K, Wakayama T, Ito A. Expression of cell adhesion molecule 1 in gastric neck and base glandular cells: Possible involvement in peritoneal dissemination of signet ring cells. Life Sci 2018; 213:206-213. [PMID: 30312702 DOI: 10.1016/j.lfs.2018.10.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/22/2018] [Accepted: 10/08/2018] [Indexed: 01/27/2023]
Abstract
AIMS To determine cellular distribution of cell adhesion molecule 1 (CADM1), an immunoglobulin superfamily member, in the human oxyntic gastric mucosa, and to explore possible involvement in the development and peritoneal dissemination of signet ring cell (SRC) gastric carcinoma, which often develops in the oxyntic mucosa. MAIN METHODS Immunohistochemistry and double immunofluorescence were conducted on surgical specimens of normal and SRC-bearing stomachs and peritoneal metastatic foci of SRCs. KATO-III (lacking CADM1) and HSC-43 (expressing CADM1) SRC cell lines were cocultured on a Met-5A mesothelial or TIG-1 fibroblastic cell monolayer. KEY FINDINGS In the oxyntic gland, some neck and nearly all base glandular cells were CADM1-positive, and mucin 5AC-positive cells were CADM1-negative, while some mucin 6-positive neck cells were CADM1-positive. Foveolar-epithelial, parietal, and endocrine cells were CADM1-negative. CADM1 was negative in all SRC carcinomas that were confined within the submucosa (n = 11) and all but one of those invading deeper (n = 15). In contrast, peritoneal metastatic foci of SRCs were CADM1-positive in five out of eleven cases (P < 0.01). In the cocultures, exogenous CADM1 made KATO-III cells adhere more and grow faster on a Met-5A monolayer, not on TIG-1 monolayers. HSC-43 cells adhered more and grew faster on Met-5A than on TIG-1 monolayers, which were partly counteracted by a function-neutralizing anti-CADM1 antibody. SIGNIFICANCE Nearly all chief cells and a part of mucous neck cells express CADM1. SRC gastric carcinoma appears to emerge as a CADM1-negative tumor, but CADM1 may help SRCs develop peritoneal dissemination through promoting their adhesion and growth in the serosal tissue.
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Affiliation(s)
- Ryuichiro Kimura
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Azusa Yoneshige
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Tomoyuki Otani
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Takao Inoue
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Naoki Shiraishi
- Hospital Pathology, Faculty of Medicine, Kindai University, Osaka, Japan
| | - Kazuyoshi Yanagihara
- Division of Biomarker Discovery, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Tomohiko Wakayama
- Department of Histology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, Japan.
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Ito T, Kasai Y, Kumagai Y, Suzuki D, Ochiai-Noguchi M, Irikura D, Miyake S, Murakami Y. Quantitative Analysis of Interaction Between CADM1 and Its Binding Cell-Surface Proteins Using Surface Plasmon Resonance Imaging. Front Cell Dev Biol 2018; 6:86. [PMID: 30131958 PMCID: PMC6090299 DOI: 10.3389/fcell.2018.00086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/20/2018] [Indexed: 12/11/2022] Open
Abstract
The cell adhesion molecule (CADM) family of the immunoglobulin superfamily (IgSF) comprises four members, CADM1-CADM4, and participates in the formation of epithelial and synaptic adhesion through cell-cell homophilic and heterophilic interactions. To identify the partners that interact with each member of the CADM family proteins, we set up a platform for multiple detection of the extracellular protein-protein interactions using surface plasmon resonance imaging (SPRi) and analyzed the interactions between the CADM family proteins and 10 IgSF of their structurally related cell adhesion molecules. SPRi analysis identified a new interaction between CADM1 and CADM4, where this heterophilic interaction was shown to be involved in morphological spreading of adult T-cell leukemia (ATL) cells expressing CADM1 when incubated on CADM4-coated glass. Moreover, class-I MHC-restricted T-cell-associated molecule (CRTAM) was identified to show the highest affinity to CADM1 among its binding partners by comparing the dissociation constants calculated from the SPR sensorgrams. These results suggest that the SPRi platform would provide a novel screening tool to characterize extracellular protein-protein interactions among cell-surface and secreted proteins, including IgSF molecules.
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Affiliation(s)
- Takeshi Ito
- Division of Molecular Pathology, The Institute of Medical Science The University of Tokyo, Tokyo, Japan
| | - Yutaka Kasai
- Division of Molecular Pathology, The Institute of Medical Science The University of Tokyo, Tokyo, Japan
| | - Yuki Kumagai
- Division of Molecular Pathology, The Institute of Medical Science The University of Tokyo, Tokyo, Japan
| | - Daisuke Suzuki
- Division of Molecular Pathology, The Institute of Medical Science The University of Tokyo, Tokyo, Japan
| | - Misaki Ochiai-Noguchi
- Division of Molecular Pathology, The Institute of Medical Science The University of Tokyo, Tokyo, Japan
| | - Daisuke Irikura
- Bio/Life Science Team, Advanced R&D Center HORIBA Ltd., Kyoto, Japan
| | - Shiro Miyake
- Bio/Life Science Team, Advanced R&D Center HORIBA Ltd., Kyoto, Japan
| | - Yoshinori Murakami
- Division of Molecular Pathology, The Institute of Medical Science The University of Tokyo, Tokyo, Japan
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29
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Pan T, Hu X, Liu T, Xu Z, Wan N, Zhang Y, Li S. MiR-128-1-5p regulates tight junction induced by selenium deficiency via targeting cell adhesion molecule 1 in broilers vein endothelial cells. J Cell Physiol 2018; 233:8802-8814. [PMID: 29904913 DOI: 10.1002/jcp.26794] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 04/30/2018] [Indexed: 01/05/2023]
Abstract
Vein endothelial cells (VECs) constitute an important barrier for macromolecules and circulating cells from the blood to the tissues, stabilizing the colloid osmotic pressure of the blood, regulating the vascular tone, and rapidly changing the intercellular connection, and maintaining normal physiological function. Tight junction has been discovered as an important structural basis of intercellular connection and may play a key role in intercellular connection injuries or vascular diseases and selenium (Se) deficiency symptoms. Hence, we replicated the Se-deficient broilers model and detected the specific microRNA in response to Se-deficient vein by using quantitative real time-PCR (qRT-PCR) analysis. Also, we selected miR-128-1-5p based on differential expression in vein tissue and confirmed its target gene cell adhesion molecule 1 (CADM1) by the dual luciferase reporter assay and qRT-PCR in VECs. We made the ectopic miR-128-1-5p expression for the purpose of validating its function on tight junction. The result showed that miR-128-1-5p and CADM1 were involved in the ZO-1-mediated tight junction, increased paracellular permeability, and arrested cell cycle. We presumed that miR-128-1-5p and Se deficiency might trigger tight junction. Interestingly, miR-128-1-5p inhibitor and fasudil in part hinder the destruction of the intercellular structure caused by Se deficiency. The miR-128-1-5p/CADM1/tight junction axis provides a new avenue toward understanding the mechanism of Se deficiency, revealing a novel regulation model of tight junction injury in vascular diseases.
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Affiliation(s)
- Tingru Pan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Xueyuan Hu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Tianqi Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Zhe Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Na Wan
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Yiming Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, China
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30
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Kato T, Hagiyama M, Takashima Y, Yoneshige A, Ito A. Cell adhesion molecule-1 shedding induces apoptosis of renal epithelial cells and exacerbates human nephropathies. Am J Physiol Renal Physiol 2018; 314:F388-F398. [PMID: 29070574 PMCID: PMC6048447 DOI: 10.1152/ajprenal.00385.2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Revised: 10/24/2017] [Accepted: 10/24/2017] [Indexed: 12/15/2022] Open
Abstract
Chronic kidney disease (CKD) is an important problem throughout the world, associated with the increase of blood urea nitrogen (BUN) and serum creatinine (sCre) and with renal tubular injuries. It is crucial to elucidate the molecular mechanisms of renal injuries to identify the new therapeutics and early diagnostic methods. We focused on cell adhesion molecule-1 (CADM1) protein. CADM1, its isoform SP4, is expressed in the epithelial cells of various tissues, including renal distal tubules, localized on the lateral cell membrane, mediates cell-cell adhesion via trans-homophilic binding, and interacts with various proteins. We previously reported that its expression was downregulated by post-proteolytic cleavage (α- and β-shedding) in pulmonary diseases. To investigate whether CADM1 α-shedding occurs in human nephropathies, we performed Western blotting and immunohistochemical analysis of specimens with arterionephrosclerosis (AS) and diabetic nephropathy (DN) from autopsied kidneys. CADM1 α-shedding was induced in AS and DN kidneys and derived from the decrease in full-length CADM1 (FL-CADM1) and increase of the COOH-terminal fragment (α-CTF). In particular, the reduced FL-CADM1 level was correlated with tubular and tubulointerstitial injuries and the increases in BUN and sCre levels. Apoptosis of renal tubular epithelial cells (TECs) was promoted in both nephropathies, and it was significantly correlated with the decrease in the FL-CADM1. Furthermore, FL-CADM1 knockdown by small interfering RNA downregulated anti-apoptotic Bcl-2 protein and promoted apoptosis of cultured renal TECs. The present study suggests that the reduction of FL-CADM1 leads to renal TEC apoptosis and could exacerbate renal tubular and tubulointerstitial injuries, which contribute to the development of CKD.
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Affiliation(s)
- Takashi Kato
- Department of Pathology, Faculty of Medicine, Kindai University , Osaka , Japan
- Urologic Oncology Branch, National Cancer Institute, National Institutes of Health , Bethesda, Maryland
| | - Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kindai University , Osaka , Japan
| | - Yasutoshi Takashima
- Department of Pathology, Faculty of Medicine, Kindai University , Osaka , Japan
| | - Azusa Yoneshige
- Department of Pathology, Faculty of Medicine, Kindai University , Osaka , Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University , Osaka , Japan
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31
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Mozhgani SH, Zarei-Ghobadi M, Teymoori-Rad M, Mokhtari-Azad T, Mirzaie M, Sheikhi M, Jazayeri SM, Shahbahrami R, Ghourchian H, Jafari M, Rezaee SA, Norouzi M. Human T-lymphotropic virus 1 (HTLV-1) pathogenesis: A systems virology study. J Cell Biochem 2018; 119:3968-3979. [PMID: 29227540 DOI: 10.1002/jcb.26546] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 12/01/2017] [Indexed: 12/31/2022]
Abstract
The main mechanisms of interaction between Human T-lymphotropic virus type 1 (HTLV-1) and its hosts in the manifestation of the related disease including HTLV-1 associated myelopathy/tropical spastic paraparesis (HAM/TSP) and Adult T-cell leukemia/lymphoma (ATLL) are yet to be determined. It is pivotal to find out the changes in the genes expression toward an asymptomatic or symptomatic states. To this end, the systems virology analysis was performed. Firstly, the differentially expressed genes (DEGs) were taken pairwise among the four sample sets of Normal, Asymptomatic Carriers (ACs), ATLL, and HAM/TSP. Afterwards, the protein-protein interaction networks were reconstructed utilizing the hub genes. In conclusion, the pathways of cells proliferation and transformation were identified in the ACs state. In addition to immune pathways in ATLL, the inflammation and cancer pathways were discened in both diseases of ATLL and HAM/TSP. The outcomes can specify the genes involved in the pathogenesis and help to design the drugs in the future.
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Affiliation(s)
- Sayed-Hamidreza Mozhgani
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohadeseh Zarei-Ghobadi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.,Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Majid Teymoori-Rad
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Talat Mokhtari-Azad
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Mirzaie
- Department of Applied Mathematics, Faculty of Mathematical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohsen Sheikhi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed-Mohammad Jazayeri
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Shahbahrami
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mohieddin Jafari
- Drug Design and Bioinformatics Unit, Medical Biotechnology Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Seyed-Abdolrahim Rezaee
- Immunology Research Center, Inflammation and Inflammatory Diseases Division, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mehdi Norouzi
- Department of Virology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran.,Research Center for Clinical Virology, Tehran University of Medical Sciences, Tehran, Iran
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32
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Lin L, You J, Qian Y, Han Y, Xiong H, Zhu T, Xia K, Su T. The prognostic value of T Lymphoma Invasion and Metastasis 1 (TIAM1) expression in oral squamous cell carcinoma. J Biochem Mol Toxicol 2016; 31. [PMID: 27862620 DOI: 10.1002/jbt.21875] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 09/23/2016] [Accepted: 10/02/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Lu Lin
- Department of Stomatology, Beijing YouAn Hospital; Capital Medical University; Beijing 100069 People's Republic of China
| | - Jingmin You
- Department of Stomatology; The First People's Hospital of Changde; Changde 415003 People's Republic of China
| | - Yunmei Qian
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital; Central-South University; Changsha 410008 People's Republic of China
| | - Ying Han
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital; Central-South University; Changsha 410008 People's Republic of China
| | - Haofeng Xiong
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital; Central-South University; Changsha 410008 People's Republic of China
| | - Tengfei Zhu
- State Key Laboratory of Medical Genetics; Central South University; Changsha 410078 People's Republic of China
| | - Kun Xia
- State Key Laboratory of Medical Genetics; Central South University; Changsha 410078 People's Republic of China
| | - Tong Su
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital; Central-South University; Changsha 410008 People's Republic of China
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33
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Abstract
Mast cells (MCs) play a central role in tissue homoeostasis, sensing the local environment through numerous innate cell surface receptors. This enables them to respond rapidly to perceived tissue insults with a view to initiating a co-ordinated programme of inflammation and repair. However, when the tissue insult is chronic, the ongoing release of multiple pro-inflammatory mediators, proteases, cytokines and chemokines leads to tissue damage and remodelling. In asthma, there is strong evidence of ongoing MC activation, and their mediators and cell-cell signals are capable of regulating many facets of asthma pathophysiology. This article reviews the evidence behind this.
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Affiliation(s)
- P Bradding
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, University of Leicester, Leicester, UK
| | - G Arthur
- Department of Infection, Immunity and Inflammation, Institute for Lung Health, University of Leicester, Leicester, UK
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34
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DeLaughter DM, Clark CR, Christodoulou DC, Seidman CE, Baldwin HS, Seidman JG, Barnett JV. Transcriptional Profiling of Cultured, Embryonic Epicardial Cells Identifies Novel Genes and Signaling Pathways Regulated by TGFβR3 In Vitro. PLoS One 2016; 11:e0159710. [PMID: 27505173 PMCID: PMC4978490 DOI: 10.1371/journal.pone.0159710] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 07/07/2016] [Indexed: 11/23/2022] Open
Abstract
The epicardium plays an important role in coronary vessel formation and Tgfbr3-/- mice exhibit failed coronary vessel development associated with decreased epicardial cell invasion. Immortalized Tgfbr3-/- epicardial cells display the same defects. Tgfbr3+/+ and Tgfbr3-/- cells incubated for 72 hours with VEH or ligands known to promote invasion via TGFβR3 (TGFβ1, TGFβ2, BMP2), for 72 hours were harvested for RNA-seq analysis. We selected for genes >2-fold differentially expressed between Tgfbr3+/+ and Tgfbr3-/- cells when incubated with VEH (604), TGFβ1 (515), TGFβ2 (553), or BMP2 (632). Gene Ontology (GO) analysis of these genes identified dysregulated biological processes consistent with the defects observed in Tgfbr3-/- cells, including those associated with extracellular matrix interaction. GO and Gene Regulatory Network (GRN) analysis identified distinct expression profiles between TGFβ1-TGFβ2 and VEH-BMP2 incubated cells, consistent with the differential response of epicardial cells to these ligands in vitro. Despite the differences observed between Tgfbr3+/+ and Tgfbr3-/- cells after TGFβ and BMP ligand addition, GRNs constructed from these gene lists identified NF-ĸB as a key nodal point for all ligands examined. Tgfbr3-/- cells exhibited decreased expression of genes known to be activated by NF-ĸB signaling. NF-ĸB activity was stimulated in Tgfbr3+/+ epicardial cells after TGFβ2 or BMP2 incubation, while Tgfbr3-/- cells failed to activate NF-ĸB in response to these ligands. Tgfbr3+/+ epicardial cells incubated with an inhibitor of NF-ĸB signaling no longer invaded into a collagen gel in response to TGFβ2 or BMP2. These data suggest that NF-ĸB signaling is dysregulated in Tgfbr3-/- epicardial cells and that NF-ĸB signaling is required for epicardial cell invasion in vitro. Our approach successfully identified a signaling pathway important in epicardial cell behavior downstream of TGFβR3. Overall, the genes and signaling pathways identified through our analysis yield the first comprehensive list of candidate genes whose expression is dependent on TGFβR3 signaling.
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Affiliation(s)
- Daniel M. DeLaughter
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Cynthia R. Clark
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Danos C. Christodoulou
- Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Christine E. Seidman
- Cardiology Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - H. Scott Baldwin
- Department of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Department of Pediatrics, Vanderbilt University School of Medicine, Nashville,Tennessee, United States of America
| | - J. G. Seidman
- Department of Genetics, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Joey V. Barnett
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- * E-mail:
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35
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Yoneshige A, Hagiyama M, Inoue T, Mimae T, Kato T, Okada M, Enoki E, Ito A. Increased ectodomain shedding of cell adhesion molecule 1 as a cause of type II alveolar epithelial cell apoptosis in patients with idiopathic interstitial pneumonia. Respir Res 2015; 16:90. [PMID: 26231557 PMCID: PMC4531801 DOI: 10.1186/s12931-015-0255-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 07/21/2015] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Lung alveolar epithelial cell (AEC) apoptosis has attracted attention as an early pathogenic event in the development of idiopathic interstitial pneumonia (IIP); however, the causative mechanism remains unclear. Cell adhesion molecule 1 (CADM1) is an AEC adhesion molecule in the immunoglobulin superfamily. It generates a membrane-associated C-terminal fragment, αCTF, through protease-mediated ectodomain shedding, termed α-shedding. Increased CADM1 α-shedding contributes to AEC apoptosis in emphysematous lungs. METHODS Formalin-fixed, paraffin-embedded lung lobes (n = 39) from 36 autopsied patients with IIP were classified as acute IIP (n = 10), fibrosing-type nonspecific IIP (f-NSIP, n = 10), cryptogenic organizing IIP (n = 9), and usual IIP (n = 10). CADM1 expression in the lung sections was examined by western blotting and compared with control lungs (n = 10). The rate of CADM1 α-shedding was calculated as the relative amount of αCTF to full-length CADM1, and the full-length CADM1 level was estimated per epithelial cell by normalization to cytokeratin 7, a lung epithelial marker. Apoptotic AECs were detected by immunohistochemistry for single-stranded DNA (ssDNA). NCI-H441 and A549 human lung epithelial cells were transfected with small interfering RNA (siRNA) to silence CADM1 expression and analyzed by terminal nucleotide nick end labeling assays. RESULTS The rate of CADM1 α-shedding was higher in all IIP subtypes than in the control (P ≤ 0.019), and the full-length CADM1 level was lower in f-NSIP (P = 0.007). The α-shedding rate and full-length CADM1 level were correlated with each other (P = 0.015) and with the proportion of ssDNA-positive AECs (P ≤ 0.024). NCI-H441 cells transfected with siRNA exhibited a 61 % lower rate of expression of full-length CADM1 and a 17-fold increased proportion of apoptotic cells. Similar results were obtained with A549 cells. CONCLUSIONS CADM1 α-shedding appeared to be increased in all four IIP subtypes and consequently contributed to AEC apoptosis by decreasing the full-length CADM1 level. This mechanism particularly impacted f-NSIP. The molecular mechanism causing AEC apoptosis may be similar between IIP and emphysema.
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Affiliation(s)
- Azusa Yoneshige
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan
| | - Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan
| | - Takao Inoue
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan
| | - Takahiro Mimae
- Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Takashi Kato
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan
| | - Morihito Okada
- Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Eisuke Enoki
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
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Rizkallah G, Mahieux R, Dutartre H. [Intercellular transmission of HTLV-1: not all mechanisms have been revealed]. Med Sci (Paris) 2015; 31:629-37. [PMID: 26152167 DOI: 10.1051/medsci/20153106016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
HTLV-1 is the etiological agent of Adult T cell Leukemia/Lymphoma (ATLL) and of HTLV-1-Associated Myelopathy/tropical spastic paraparesis (HAM/TSP). It is mainly detected in CD4+ lymphocytes in vivo, but proviral genomes have also been detected although less frequently, in CD8+ T lymphocytes, B lymphocytes, monocytes, macrophages, dendritic cells and other non-lymphoid cells. Virus spread is highly dependent on cell-cell contact. This mode of transmission is correlated with an increased ability of infected cells to migrate, a property linked to cytoskeleton reorganization induced by the viral Tax protein. Cell-to-cell transmission relies on at least three non-exclusive molecular pathways. First, a specialized area, the "virological synapse'' (VS) promotes direct transmission of budding HTLV-1 particles into a synaptic cleft formed between infected and uninfected cells. Second, HTLV-1 particles accumulate at the plasma membrane of infected cells in a biofilm-like extracellular viral assembly that resembles a bacterial biofilm. Viral biofilm is rapidly transmitted to uninfected cells when infected cells contact target cells. Finally, membrane extensions called inter-cellular conduits facilitate HTLV-1 proteins transfer from infected to uninfected target cells, and may stabilize cell-cell contacts. The aim of this review is to summarize the molecular mechanisms of these HTLV-1 transmission pathways.
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Affiliation(s)
- Gerges Rizkallah
- Équipe oncogenèse rétrovirale ; équipe labellisée Ligue nationale contre le cancer ; centre international de recherche en infectiologie, Inserm U1111-CNRS UMR5308, Lyon, France - École normale supérieure de Lyon, 46, allée d'Italie, 69007 Lyon, France - Université Lyon 1, Lyon Cedex 07, 69364, France
| | - Renaud Mahieux
- Équipe oncogenèse rétrovirale ; équipe labellisée Ligue nationale contre le cancer ; centre international de recherche en infectiologie, Inserm U1111-CNRS UMR5308, Lyon, France - École normale supérieure de Lyon, 46, allée d'Italie, 69007 Lyon, France - Université Lyon 1, Lyon Cedex 07, 69364, France
| | - Hélène Dutartre
- Équipe oncogenèse rétrovirale ; équipe labellisée Ligue nationale contre le cancer ; centre international de recherche en infectiologie, Inserm U1111-CNRS UMR5308, Lyon, France - École normale supérieure de Lyon, 46, allée d'Italie, 69007 Lyon, France - Université Lyon 1, Lyon Cedex 07, 69364, France
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Tumor Suppressor Inactivation in the Pathogenesis of Adult T-Cell Leukemia. JOURNAL OF ONCOLOGY 2015; 2015:183590. [PMID: 26170835 PMCID: PMC4478360 DOI: 10.1155/2015/183590] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 05/24/2015] [Indexed: 12/12/2022]
Abstract
Tumor suppressor functions are essential to control cellular proliferation, to activate the apoptosis or senescence pathway to eliminate unwanted cells, to link DNA damage signals to cell cycle arrest checkpoints, to activate appropriate DNA repair pathways, and to prevent the loss of adhesion to inhibit initiation of metastases. Therefore, tumor suppressor genes are indispensable to maintaining genetic and genomic integrity. Consequently, inactivation of tumor suppressors by somatic mutations or epigenetic mechanisms is frequently associated with tumor initiation and development. In contrast, reactivation of tumor suppressor functions can effectively reverse the transformed phenotype and lead to cell cycle arrest or death of cancerous cells and be used as a therapeutic strategy. Adult T-cell leukemia/lymphoma (ATLL) is an aggressive lymphoproliferative disease associated with infection of CD4 T cells by the Human T-cell Leukemia Virus Type 1 (HTLV-I). HTLV-I-associated T-cell transformation is the result of a multistep oncogenic process in which the virus initially induces chronic T-cell proliferation and alters cellular pathways resulting in the accumulation of genetic defects and the deregulated growth of virally infected cells. This review will focus on the current knowledge of the genetic and epigenetic mechanisms regulating the inactivation of tumor suppressors in the pathogenesis of HTLV-I.
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Kitagishi Y, Minami A, Nakanishi A, Ogura Y, Matsuda S. Neuron membrane trafficking and protein kinases involved in autism and ADHD. Int J Mol Sci 2015; 16:3095-115. [PMID: 25647412 PMCID: PMC4346882 DOI: 10.3390/ijms16023095] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 01/19/2015] [Indexed: 11/16/2022] Open
Abstract
A brain-enriched multi-domain scaffolding protein, neurobeachin has been identified as a candidate gene for autism patients. Mutations in the synaptic adhesion protein cell adhesion molecule 1 (CADM1) are also associated with autism spectrum disorder, a neurodevelopmental disorder of uncertain molecular origin. Potential roles of neurobeachin and CADM1 have been suggested to a function of vesicle transport in endosomal trafficking. It seems that protein kinase B (AKT) and cyclic adenosine monophosphate (cAMP)-dependent protein kinase A (PKA) have key roles in the neuron membrane trafficking involved in the pathogenesis of autism. Attention deficit hyperactivity disorder (ADHD) is documented to dopaminergic insufficiencies, which is attributed to synaptic dysfunction of dopamine transporter (DAT). AKT is also essential for the DAT cell-surface redistribution. In the present paper, we summarize and discuss the importance of several protein kinases that regulate the membrane trafficking involved in autism and ADHD, suggesting new targets for therapeutic intervention.
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Affiliation(s)
- Yasuko Kitagishi
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Akari Minami
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Atsuko Nakanishi
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Yasunori Ogura
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Satoru Matsuda
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
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Snellenberg S, Cillessen SAGM, Van Criekinge W, Bosch L, Meijer CJLM, Snijders PJF, Steenbergen RDM. Methylation-mediated repression of PRDM14 contributes to apoptosis evasion in HPV-positive cancers. Carcinogenesis 2014; 35:2611-8. [PMID: 25233927 DOI: 10.1093/carcin/bgu197] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Promoter methylation of the transcription factor PRDM14 (PRDI-BF1 and RIZ domain containing 14) represents a highly frequent event in human papillomavirus (HPV)-induced cervical cancers and cancer precursor lesions. Here, we aimed to assess the functional consequences of PRDM14 promoter methylation in HPV-induced carcinogenesis. PRDM14 promoter methylation, expression and consequences of ectopic PRDM14 expression were studied in HPV16-positive cervical and oral cancer cell lines (SiHa, CaSki and 93VU147T), human embryonic kidney 293 (HEK293T) cells and primary human foreskin keratinocytes (HFK). PRDM14 mRNA expression was restricted to HEK293T and HFK cells, and could be upregulated in SiHa cells upon DNA methylation inhibition. Ectopic expression of PRDM14 in SiHa, CaSki and 93VU147T cells resulted in significantly more apoptotic cells, as measured by annexin V labelling, compared to HEK293T and HFK cells. MRNA profiling of 41 apoptosis regulators identified NOXA and PUMA as candidate target genes involved in PRDM14-mediated apoptosis induction. Full-length PRDM14 transactivated both NOXA and PUMA promoters. Transactivation was abolished upon deletion of the PRDM14 DNA binding domain. This suggests that NOXA and PUMA expression is directly regulated by PRDM14, which in case of NOXA was linked to a consensus PRDM14 binding motif in the promoter region. Taken together, these results suggest that PRDM14 acts as a regulator of NOXA and PUMA-mediated apoptosis induction, thereby providing evidence for a tumour suppressive role in HPV-induced carcinogenesis. The contribution of methylation-mediated gene silencing of PRDM14 to apoptosis evasion in HPV-positive cancer cells offers novel therapeutic options for HPV-induced cancers.
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Affiliation(s)
- Suzanne Snellenberg
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and
| | - Saskia A G M Cillessen
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and
| | - Wim Van Criekinge
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and BioBix, Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Ghent, Belgium
| | - Leontien Bosch
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and
| | - Chris J L M Meijer
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and
| | - Peter J F Snijders
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and
| | - Renske D M Steenbergen
- Department of Pathology, Unit of Molecular Pathology, VU University Medical Center, Amsterdam, The Netherlands and
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Kobayashi S, Nakano K, Watanabe E, Ishigaki T, Ohno N, Yuji K, Oyaizu N, Asanuma S, Yamagishi M, Yamochi T, Watanabe N, Tojo A, Watanabe T, Uchimaru K. CADM1 expression and stepwise downregulation of CD7 are closely associated with clonal expansion of HTLV-I-infected cells in adult T-cell leukemia/lymphoma. Clin Cancer Res 2014; 20:2851-61. [PMID: 24727323 DOI: 10.1158/1078-0432.ccr-13-3169] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Cell adhesion molecule 1 (CADM1), initially identified as a tumor suppressor gene, has recently been reported to be ectopically expressed in primary adult T-cell leukemia-lymphoma (ATL) cells. We incorporated CADM1 into flow-cytometric analysis to reveal oncogenic mechanisms in human T-cell lymphotrophic virus type I (HTLV-I) infection by purifying cells from the intermediate stages of ATL development. EXPERIMENTAL DESIGN We isolated CADM1- and CD7-expressing peripheral blood mononuclear cells of asymptomatic carriers and ATLs using multicolor flow cytometry. Fluorescence-activated cell sorted (FACS) subpopulations were subjected to clonal expansion and gene expression analysis. RESULTS HTLV-I-infected cells were efficiently enriched in CADM1(+) subpopulations (D, CADM1(pos)CD7(dim) and N, CADM1(pos)CD7(neg)). Clonally expanding cells were detected exclusively in these subpopulations in asymptomatic carriers with high proviral load, suggesting that the appearance of D and N could be a surrogate marker of progression from asymptomatic carrier to early ATL. Further disease progression was accompanied by an increase in N with a reciprocal decrease in D, indicating clonal evolution from D to N. The gene expression profiles of D and N in asymptomatic carriers showed similarities to those of indolent ATLs, suggesting that these subpopulations represent premalignant cells. This is further supported by the molecular hallmarks of ATL, that is, drastic downregulation of miR-31 and upregulation of abnormal Helios transcripts. CONCLUSION The CADM1 versus CD7 plot accurately reflects disease progression in HTLV-I infection, and CADM1(+) cells with downregulated CD7 in asymptomatic carriers have common properties with those in indolent ATLs.
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Affiliation(s)
- Seiichiro Kobayashi
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Kazumi Nakano
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Eri Watanabe
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Tomohiro Ishigaki
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Nobuhiro Ohno
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Koichiro Yuji
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Naoki Oyaizu
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Satomi Asanuma
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Makoto Yamagishi
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Tadanori Yamochi
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Nobukazu Watanabe
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Arinobu Tojo
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, JapanAuthors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Toshiki Watanabe
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Kaoru Uchimaru
- Authors' affiliations: Division of Molecular Therapy; Laboratory of Diagnostic Medicine, Division of Stem Cell Therapy; Department of Hematology/Oncology, Research Hospital; Clinical Laboratory, Research Hospital, Institute of Medical Science; and Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
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Masuda M, Chen WY, Miyanaga A, Nakamura Y, Kawasaki K, Sakuma T, Ono M, Chen CL, Honda K, Yamada T. Alternative mammalian target of rapamycin (mTOR) signal activation in sorafenib-resistant hepatocellular carcinoma cells revealed by array-based pathway profiling. Mol Cell Proteomics 2014; 13:1429-38. [PMID: 24643969 DOI: 10.1074/mcp.m113.033845] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Sorafenib is a multi-kinase inhibitor that has been proven effective for the treatment of unresectable hepatocellular carcinoma (HCC). However, its precise mechanisms of action and resistance have not been well established. We have developed high-density fluorescence reverse-phase protein arrays and used them to determine the status of 180 phosphorylation sites of signaling molecules in the 120 pathways registered in the NCI-Nature curated database in 23 HCC cell lines. Among the 180 signaling nodes, we found that the level of ribosomal protein S6 phosphorylated at serine residue 235/236 (p-RPS6 S235/236) was most significantly correlated with the resistance of HCC cells to sorafenib. The high expression of p-RPS6 S235/236 was confirmed immunohistochemically in biopsy samples obtained from HCC patients who responded poorly to sorafenib. Sorafenib-resistant HCC cells showed constitutive activation of the mammalian target of rapamycin (mTOR) pathway, but whole-exon sequencing of kinase genes revealed no evident alteration in the pathway. p-RPS6 S235/236 is a potential biomarker that predicts unresponsiveness of HCC to sorafenib. The use of mTOR inhibitors may be considered for the treatment of such tumors.
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Affiliation(s)
- Mari Masuda
- From the ‡Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Tokyo, 104-0045 Japan;
| | - Wei-Yu Chen
- ¶Department of Pathology, Wan Fan Hospital and Taipei Medical University, Taipei, 11031 Taiwan
| | - Akihiko Miyanaga
- From the ‡Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Tokyo, 104-0045 Japan
| | - Yuka Nakamura
- From the ‡Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Tokyo, 104-0045 Japan
| | - Kumiko Kawasaki
- ‖BioBusiness Group, Mitsui Knowledge Industry, Tokyo, 164-8555 Japan
| | - Tomohiro Sakuma
- ‖BioBusiness Group, Mitsui Knowledge Industry, Tokyo, 164-8555 Japan
| | - Masaya Ono
- From the ‡Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Tokyo, 104-0045 Japan
| | - Chi-Long Chen
- ¶Department of Pathology, Wan Fan Hospital and Taipei Medical University, Taipei, 11031 Taiwan
| | - Kazufumi Honda
- From the ‡Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Tokyo, 104-0045 Japan
| | - Tesshi Yamada
- From the ‡Division of Chemotherapy and Clinical Research, National Cancer Center Research Institute, Tokyo, 104-0045 Japan
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The guanine nucleotide exchange factor Tiam1: A Janus-faced molecule in cellular signaling. Cell Signal 2014; 26:483-91. [DOI: 10.1016/j.cellsig.2013.11.034] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 11/26/2013] [Indexed: 11/22/2022]
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Moiseeva EP, Straatman KR, Leyland ML, Bradding P. CADM1 controls actin cytoskeleton assembly and regulates extracellular matrix adhesion in human mast cells. PLoS One 2014; 9:e85980. [PMID: 24465823 PMCID: PMC3899107 DOI: 10.1371/journal.pone.0085980] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 12/03/2013] [Indexed: 12/21/2022] Open
Abstract
CADM1 is a major receptor for the adhesion of mast cells (MCs) to fibroblasts, human airway smooth muscle cells (HASMCs) and neurons. It also regulates E-cadherin and alpha6beta4 integrin in other cell types. Here we investigated a role for CADM1 in MC adhesion to both cells and extracellular matrix (ECM). Downregulation of CADM1 in the human MC line HMC-1 resulted not only in reduced adhesion to HASMCs, but also reduced adhesion to their ECM. Time-course studies in the presence of EDTA to inhibit integrins demonstrated that CADM1 provided fast initial adhesion to HASMCs and assisted with slower adhesion to ECM. CADM1 downregulation, but not antibody-dependent CADM1 inhibition, reduced MC adhesion to ECM, suggesting indirect regulation of ECM adhesion. To investigate potential mechanisms, phosphotyrosine signalling and polymerisation of actin filaments, essential for integrin-mediated adhesion, were examined. Modulation of CADM1 expression positively correlated with surface KIT levels and polymerisation of cortical F-actin in HMC-1 cells. It also influenced phosphotyrosine signalling and KIT tyrosine autophosphorylation. CADM1 accounted for 46% of surface KIT levels and 31% of F-actin in HMC-1 cells. CADM1 downregulation resulted in elongation of cortical actin filaments in both HMC-1 cells and human lung MCs and increased cell rigidity of HMC-1 cells. Collectively these data suggest that CADM1 is a key adhesion receptor, which regulates MC net adhesion, both directly through CADM1-dependent adhesion, and indirectly through the regulation of other adhesion receptors. The latter is likely to occur via docking of KIT and polymerisation of cortical F-actin. Here we propose a stepwise model of adhesion with CADM1 as a driving force for net MC adhesion.
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Affiliation(s)
- Elena P. Moiseeva
- Institute for Lung Health, Dept. of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom
- * E-mail:
| | - Kees R. Straatman
- Centre for Core Biotechnology Services, University of Leicester, Leicester, United Kingdom
| | - Mark L. Leyland
- Department of Biochemistry, University of Leicester, Leicester, United Kingdom
| | - Peter Bradding
- Institute for Lung Health, Dept. of Infection, Immunity and Inflammation, University of Leicester, Leicester, United Kingdom
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Argonaute2 mediates compensatory expansion of the pancreatic β cell. Cell Metab 2014; 19:122-34. [PMID: 24361012 PMCID: PMC3945818 DOI: 10.1016/j.cmet.2013.11.015] [Citation(s) in RCA: 117] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Revised: 07/26/2013] [Accepted: 11/10/2013] [Indexed: 12/31/2022]
Abstract
Pancreatic β cells adapt to compensate for increased metabolic demand during insulin resistance. Although the microRNA pathway has an essential role in β cell proliferation, the extent of its contribution is unclear. Here, we report that miR-184 is silenced in the pancreatic islets of insulin-resistant mouse models and type 2 diabetic human subjects. Reduction of miR-184 promotes the expression of its target Argonaute2 (Ago2), a component of the microRNA-induced silencing complex. Moreover, restoration of miR-184 in leptin-deficient ob/ob mice decreased Ago2 and prevented compensatory β cell expansion. Loss of Ago2 during insulin resistance blocked β cell growth and relieved the regulation of miR-375-targeted genes, including the growth suppressor Cadm1. Lastly, administration of a ketogenic diet to ob/ob mice rescued insulin sensitivity and miR-184 expression and restored Ago2 and β cell mass. This study identifies the targeting of Ago2 by miR-184 as an essential component of the compensatory response to regulate proliferation according to insulin sensitivity.
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Subramanian N, Navaneethakrishnan S, Biswas J, Kanwar RK, Kanwar JR, Krishnakumar S. RNAi mediated Tiam1 gene knockdown inhibits invasion of retinoblastoma. PLoS One 2013; 8:e70422. [PMID: 23950931 PMCID: PMC3737373 DOI: 10.1371/journal.pone.0070422] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Accepted: 06/18/2013] [Indexed: 11/18/2022] Open
Abstract
T lymphoma invasion and metastasis protein (Tiam1) is up-regulated in variety of cancers and its expression level is related to metastatic potential of the type of cancer. Earlier, Tiam1 was shown to be overexpressed in retinoblastoma (RB) and we hypothesized that it was involved in invasiveness of RB. This was tested by silencing Tiam1 in RB cell lines (Y79 and Weri-Rb1) using siRNA pool, targeting different regions of Tiam1 mRNA. The cDNA microarray of Tiam1 silenced cells showed gene regulations altered by Tiam1 were predominantly on the actin cytoskeleton interacting proteins, apoptotic initiators and tumorogenic potential targets. The silenced phenotype resulted in decreased growth and increased apoptosis with non-invasive characteristics. Transfection of full length and N-terminal truncated construct (C1199) clearly revealed membrane localization of Tiam1 and not in the case of C580 construct. F-actin staining showed the interaction of Tiam1 with actin in the membrane edges that leads to ruffling, and also imparts varying invasive potential to the cell. The results obtained from our study show for the first time that Tiam1 modulates the cell invasion, mediated by actin cytoskeleton remodeling in RB.
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Affiliation(s)
- Nithya Subramanian
- Larsen and Toubro Department of Ocular Pathology, Vision Research Foundation, Sankara Nethralaya, Chennai, India
- Nanomedicine Laboratory of Immunology and Molecular Biomedical Research (N-LIMBR), School of Medicine (SoM), Molecular and Medical Research (MMR) Strategic Research Centre, Faculty of Health, Deakin University, Geelong Technology Precinct (GTP), Geelong, Victoria, Australia
| | - Saranya Navaneethakrishnan
- Larsen and Toubro Department of Ocular Pathology, Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | - Jyotirmay Biswas
- Larsen and Toubro Department of Ocular Pathology, Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | - Rupinder K. Kanwar
- Nanomedicine Laboratory of Immunology and Molecular Biomedical Research (N-LIMBR), School of Medicine (SoM), Molecular and Medical Research (MMR) Strategic Research Centre, Faculty of Health, Deakin University, Geelong Technology Precinct (GTP), Geelong, Victoria, Australia
| | - Jagat R. Kanwar
- Nanomedicine Laboratory of Immunology and Molecular Biomedical Research (N-LIMBR), School of Medicine (SoM), Molecular and Medical Research (MMR) Strategic Research Centre, Faculty of Health, Deakin University, Geelong Technology Precinct (GTP), Geelong, Victoria, Australia
- * E-mail: (SK); (JRK)
| | - Subramanian Krishnakumar
- Larsen and Toubro Department of Ocular Pathology, Vision Research Foundation, Sankara Nethralaya, Chennai, India
- * E-mail: (SK); (JRK)
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Liu X, Shepherd TR, Murray AM, Xu Z, Fuentes EJ. The structure of the Tiam1 PDZ domain/ phospho-syndecan1 complex reveals a ligand conformation that modulates protein dynamics. Structure 2013; 21:342-54. [PMID: 23395182 DOI: 10.1016/j.str.2013.01.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 12/12/2012] [Accepted: 01/03/2013] [Indexed: 11/30/2022]
Abstract
PDZ (PSD-95/Dlg/ZO-1) domains are protein-protein interaction modules often regulated by ligand phosphorylation. Here, we investigated the specificity, structure, and dynamics of Tiam1 PDZ domain/ligand interactions. We show that the PDZ domain specifically binds syndecan1 (SDC1), phosphorylated SDC1 (pSDC1), and SDC3 but not other syndecan isoforms. The crystal structure of the PDZ/SDC1 complex indicates that syndecan affinity is derived from amino acids beyond the four C-terminal residues. Remarkably, the crystal structure of the PDZ/pSDC1 complex reveals a binding pocket that accommodates the phosphoryl group. Methyl relaxation experiments of PDZ/SCD1 and PDZ/pSDC1 complexes reveal that PDZ-phosphoryl interactions dampen dynamic motions in a distal region of the PDZ domain by decoupling them from the ligand-binding site. Our data are consistent with a selection model by which specificity and phosphorylation regulate PDZ/syndecan interactions and signaling events. Importantly, our relaxation data demonstrate that PDZ/phospho-ligand interactions regulate protein dynamics and their coupling to distal sites.
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Affiliation(s)
- Xu Liu
- Department of Biochemistry, University of Iowa, Carver College of Medicine, Iowa City, IA 52242, USA
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Yamagishi M, Watanabe T. Molecular hallmarks of adult T cell leukemia. Front Microbiol 2012; 3:334. [PMID: 23060864 PMCID: PMC3444139 DOI: 10.3389/fmicb.2012.00334] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Accepted: 08/29/2012] [Indexed: 12/20/2022] Open
Abstract
The molecular hallmarks of adult T cell leukemia (ATL) comprise outstanding deregulations of signaling pathways that control the cell cycle, resistance to apoptosis, and proliferation of leukemic cells, all of which have been identified by early excellent studies. Nevertheless, we are now confronted the therapeutic difficulties of ATL that is a most aggressive T cell leukemia/lymphoma. Using next-generation strategies, emerging molecular characteristics such as specific surface markers and an additional catalog of signals affecting the fate of leukemic cells have been added to the molecular hallmarks that constitute an organizing principle for rationalizing the complexities of ATL. Although human T cell leukemia virus type 1 is undoubtedly involved in ATL leukemogenesis, most leukemic cells do not express the viral protein Tax. Instead, cellular gene expression changes dominate homeostasis disorders of infected cells and characteristics of ATL. In this review, we summarize the state of the art of ATL molecular pathology, which supports the biological properties of leukemic cells. In addition, we discuss the recent discovery of two molecular hallmarks of potential generality; an abnormal microRNA pattern and epigenetic reprogramming, which strongly involve the imbalance of the molecular network of lymphocytes. Global analyses of ATL have revealed the functional impact of crosstalk between multifunctional pathways. Clinical and biological studies on signaling inhibitory agents have also revealed novel oncogenic drivers that can be targeted in future. ATL cells, by deregulation of such pathways and their interconnections, may become masters of their own destinies. Recognizing and understanding of the widespread molecular applicability of these concepts will increasingly affect the development of novel strategies for treating ATL.
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Affiliation(s)
- Makoto Yamagishi
- Laboratory of Tumor Cell Biology, Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo Minato-ku, Tokyo, Japan
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48
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Gomez-Cambronero J. Biochemical and cellular implications of a dual lipase-GEF function of phospholipase D2 (PLD2). J Leukoc Biol 2012; 92:461-7. [PMID: 22750546 DOI: 10.1189/jlb.0212073] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PLD2 plays a key role in cell membrane lipid reorganization and as a key cell signaling protein in leukocyte chemotaxis and phagocytosis. Adding to the large role for a lipase in cellular functions, recently, our lab has identified a PLD2-Rac2 binding through two CRIB domains in PLD2 and has defined PLD2 as having a new function, that of a GEF for Rac2. PLD2 joins other major GEFs, such as P-Rex1 and Vav, which operate mainly in leukocytes. We explain the biochemical and cellular implications of a lipase-GEF duality. Under normal conditions, GEFs are not constitutively active; instead, their activation is highly regulated. Activation of PLD2 leads to its localization at the plasma membrane, where it can access its substrate GTPases. We propose that PLD2 can act as a "scaffold" protein to increase efficiency of signaling and compartmentalization at a phagocytic cup or the leading edge of a leukocyte lamellipodium. This new concept will help our understanding of leukocyte crucial functions, such as cell migration and adhesion, and how their deregulation impacts chronic inflammation.
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Affiliation(s)
- Julian Gomez-Cambronero
- Wright State University School of Medicine, Department of Biochemistry and Molecular Biology, Dayton, OH, USA.
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Kikuchi S, Iwai M, Sakurai-Yageta M, Tsuboi Y, Ito T, Maruyama T, Tsuda H, Kanai Y, Onizuka M, Sato Y, Murakami Y. Expression of a splicing variant of the CADM1 specific to small cell lung cancer. Cancer Sci 2012; 103:1051-7. [PMID: 22429880 DOI: 10.1111/j.1349-7006.2012.02277.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2011] [Revised: 03/01/2012] [Accepted: 03/04/2012] [Indexed: 12/25/2022] Open
Abstract
CADM1, a member of the immunoglobulin superfamily cell adhesion molecule, acts as a tumor suppressor in a variety of human cancers. CADM1 is also ectopically expressed in adult T-cell leukemia (ATL), conferring an invasive phenotype characteristic to ATL. Therefore, CADM1 plays dual roles in human oncogenesis. Here, we investigate the roles of CADM1 in small cell lung cancer (SCLC). Immunohistochemistry demonstrates that 10 of 35 (29%) primary SCLC tumors express CADM1 protein. Western blotting and RT-PCR analyses reveal that CADM1 is significantly expressed in 11 of 14 SCLC cells growing in suspension cultures but in neither of 2 SCLC cells showing attached growth to plastic dishes, suggesting that CADM1 is involved in anchorage-independent growth in SCLC. In the present study, we demonstrate that SCLC expresses a unique splicing variant of CADM1 (variant 8/9) containing additional extracellular fragments corresponding to exon 9 in addition to variant 8, a common isoform in epithelia. Variant 8/9 of CADM1 is almost exclusively observed in SCLC and testis, although this variant protein localizes along the membrane and shows similar cell aggregation activity to variant 8. Interestingly, both variant 8/9 and variant 8 of CADM1 show enhanced tumorigenicity in nude mice when transfected into SBC5, a SCLC cell lacking CADM1. Inversely, suppression of CADM1 expression by shRNA reduced spheroid-like cell aggregation of NCI-H69, an SCLC cell expressing a high amount of CADM1. These findings suggest that CADM1 enhances the malignant features of SCLC, as is observed in ATL, and could provide a molecular marker specific to SCLC.
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Affiliation(s)
- Shinji Kikuchi
- Division of Molecular Pathology, Institute of Medical Science, The University of Tokyo, Tokyo, Japan
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CADM1 isoforms differentially regulate human mast cell survival and homotypic adhesion. Cell Mol Life Sci 2012; 69:2751-64. [PMID: 22438059 PMCID: PMC3400039 DOI: 10.1007/s00018-012-0948-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 01/25/2012] [Accepted: 02/20/2012] [Indexed: 12/28/2022]
Abstract
Cell adhesion molecule 1 (CADM1), expressed by human lung mast cells (HLMCs), mediates their adhesion to airway smooth muscle (ASM), and contributes to ASM-dependent HLMC proliferation and survival. CADM1 is expressed in alternatively spliced isoforms, but those present in HLMCs and their function are not known. We cloned three functional and one cryptic non-functional isoform with alternative splicing between exons 7/11 and 1/2, respectively, from HLMCs and human MC lines (HMC-1 and LAD2). Differentiated HLMCs and LAD2 cells expressed the functional isoform SP4 containing exons 7/8/11 (~80% of clones), as well as SP1 (exons 7/8/9/11) and a novel SP6 (exons 7/8/9/10/11). In contrast, immature HMC-1 cells expressed only functional SP4. SP4 overexpression in HMC-1 cells and HLMCs augmented homotypic adhesion to a greater extent than SP1 in various conditions. In contrast, CADM1 downregulation abolished homotypic adhesion, indicating that CADM1 is the sole receptor mediating mast cell aggregation. CADM1-mediated adhesion was enhanced by the presence of cell survival factors. SP1 overexpression in HMC-1 cells compromised survival compared to SP4 overexpression or control. CADM1 downregulation resulted in reduced viability and decreased expression of the pro-survival protein Mcl-1L, but not Blc-2 or Bcl-XL, and increased caspase-3/7 activity in both HMC-1 cells and HLMCs. This coincided with decreased basal Kit levels in HLMCs. In summary, human MCs express multiple CADM1 isoforms which exhibit differential regulation of survival and homotypic adhesion. The most highly expressed SP4 isoform is likely to contribute to MC aggregation and longevity in mastocytosis, and augment the pathophysiology of allergic diseases.
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