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Hagiyama M, Yoneshige A, Otani T, Wada A, Takeuchi F, Shoya Y, Inoue T, Ito A. An antibody-drug conjugate for endometrioid carcinoma based on the expression of cell adhesion molecule 1. Mol Cell Oncol 2024; 11:2399379. [PMID: 39252827 PMCID: PMC11382700 DOI: 10.1080/23723556.2024.2399379] [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: 05/08/2024] [Revised: 08/27/2024] [Accepted: 08/28/2024] [Indexed: 09/11/2024]
Abstract
Cell adhesion molecule 1 (CADM1), an immunoglobulin superfamily member, is expressed in endometrial glandular cells highly during the proliferative phase but lowly during the secretory phase. Previously, a CADM1-targeting antibody-drug conjugate (ADC) was generated, in which a humanized anti-CADM1 ectodomain antibody h3E1 was linked with monomethyl auristatin E (h3E1-MMAE ADC). The present study aimed at probing whether this ADC could be useful for the treatment of endometrial neoplasm. Firstly, immunohistochemistry for CADM1 was conducted on proliferative-phase endometrium (n = 13), endometrial hyperplasia (n = 35), and endometrioid carcinoma at various stages (n = 166). CADM1 immunostaining intensity was highest in atypical endometrial hyperplasia and endometrioid carcinoma confined within the endometrium and was decreased stepwise as the carcinoma stage progressed. Next, h3E1-MMAE ADC was examined for its cytotoxicity in vitro using human endometrial adenocarcinoma cell lines expressing CADM1; HEC-1B, HEC-50B, JHUM-3, and OMC-2. The ADC killed these cells in a dose-dependent manner with half maximal inhibitory concentration (IC50) of 12.02 nM for HEC-1B and 2.04 nM for HEC-50B. Collectively, h3E1-MMAE ADC may serve as a noninvasive alternative to simple hysterectomy in the treatment of endometrioid carcinoma confined within the endometrium.
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Affiliation(s)
- Man Hagiyama
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, Japan
| | - Azusa Yoneshige
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, Japan
| | - Tomoyuki Otani
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, Japan
| | - Akihiro Wada
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, Japan
| | - Fuka Takeuchi
- Division of Molecular Pathology, Graduate School of Medicine, Kindai University, Osaka-sayama, Osaka, Japan
| | - Yuji Shoya
- Division of Molecular Pathology, Graduate School of Medicine, Kindai University, Osaka-sayama, Osaka, Japan
- Pharma Foods International Co., Ltd., Ohara, Nishikyo-Ku, Kyoto, Japan
| | - Takao Inoue
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, Japan
| | - Akihiko Ito
- Department of Pathology, Kindai University Faculty of Medicine, Osaka-sayama, Osaka, Japan
- Division of Molecular Pathology, Graduate School of Medicine, Kindai University, Osaka-sayama, Osaka, Japan
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Wu X, Azizan EAB, Goodchild E, Garg S, Hagiyama M, Cabrera CP, Fernandes-Rosa FL, Boulkroun S, Kuan JL, Tiang Z, David A, Murakami M, Mein CA, Wozniak E, Zhao W, Marker A, Buss F, Saleeb RS, Salsbury J, Tezuka Y, Satoh F, Oki K, Udager AM, Cohen DL, Wachtel H, King PJ, Drake WM, Gurnell M, Ceral J, Ryska A, Mustangin M, Wong YP, Tan GC, Solar M, Reincke M, Rainey WE, Foo RS, Takaoka Y, Murray SA, Zennaro MC, Beuschlein F, Ito A, Brown MJ. Somatic mutations of CADM1 in aldosterone-producing adenomas and gap junction-dependent regulation of aldosterone production. Nat Genet 2023; 55:1009-1021. [PMID: 37291193 PMCID: PMC10260400 DOI: 10.1038/s41588-023-01403-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 04/20/2023] [Indexed: 06/10/2023]
Abstract
Aldosterone-producing adenomas (APAs) are the commonest curable cause of hypertension. Most have gain-of-function somatic mutations of ion channels or transporters. Herein we report the discovery, replication and phenotype of mutations in the neuronal cell adhesion gene CADM1. Independent whole exome sequencing of 40 and 81 APAs found intramembranous p.Val380Asp or p.Gly379Asp variants in two patients whose hypertension and periodic primary aldosteronism were cured by adrenalectomy. Replication identified two more APAs with each variant (total, n = 6). The most upregulated gene (10- to 25-fold) in human adrenocortical H295R cells transduced with the mutations (compared to wildtype) was CYP11B2 (aldosterone synthase), and biological rhythms were the most differentially expressed process. CADM1 knockdown or mutation inhibited gap junction (GJ)-permeable dye transfer. GJ blockade by Gap27 increased CYP11B2 similarly to CADM1 mutation. Human adrenal zona glomerulosa (ZG) expression of GJA1 (the main GJ protein) was patchy, and annular GJs (sequelae of GJ communication) were less prominent in CYP11B2-positive micronodules than adjacent ZG. Somatic mutations of CADM1 cause reversible hypertension and reveal a role for GJ communication in suppressing physiological aldosterone production.
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Affiliation(s)
- Xilin Wu
- Endocrine Hypertension, Department of Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Queen Mary University of London, London, UK
- NIHR Barts Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Elena A B Azizan
- Endocrine Hypertension, Department of Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Queen Mary University of London, London, UK.
- Department of Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
| | - Emily Goodchild
- Endocrine Hypertension, Department of Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Queen Mary University of London, London, UK
- NIHR Barts Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Sumedha Garg
- Endocrine Hypertension, Department of Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Queen Mary University of London, London, UK
- Clinical Pharmacology Unit, University of Cambridge, Cambridge, UK
| | - Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Claudia P Cabrera
- NIHR Barts Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- Centre for Translational Bioinformatics, William Harvey Research Institute, Queen Mary University of London, London, UK
| | | | | | - Jyn Ling Kuan
- Cardiovascular Disease Translational Research Programme, Department of Medicine, National University of Singapore, Singapore, Singapore
| | - Zenia Tiang
- Cardiovascular Disease Translational Research Programme, Department of Medicine, National University of Singapore, Singapore, Singapore
| | - Alessia David
- Centre for Bioinformatics, Department of Life Sciences, Imperial College London, London, UK
| | - Masanori Murakami
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Charles A Mein
- Barts and London Genome Centre, School of Medicine and Dentistry, Blizard Institute, London, UK
| | - Eva Wozniak
- Barts and London Genome Centre, School of Medicine and Dentistry, Blizard Institute, London, UK
| | - Wanfeng Zhao
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, UK
| | - Alison Marker
- Department of Histopathology, Addenbrooke's Hospital, Cambridge, UK
| | - Folma Buss
- Cambridge Institute for Medical Research, The Keith Peters Building, University of Cambridge, Cambridge, UK
| | - Rebecca S Saleeb
- Centre for Microvascular Research, William Harvey Research Institute, Queen Mary University of London, London, UK
| | - Jackie Salsbury
- Endocrine Hypertension, Department of Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Queen Mary University of London, London, UK
- NIHR Barts Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Yuta Tezuka
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
| | - Fumitoshi Satoh
- Division of Nephrology, Endocrinology, and Vascular Medicine, Tohoku University Hospital, Sendai, Japan
- Division of Clinical Hypertension, Endocrinology and Metabolism, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Aaron M Udager
- Department of Pathology, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Debbie L Cohen
- Renal Division, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Heather Wachtel
- Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Peter J King
- Department of Endocrinology, William Harvey Research Institute, Queen Mary University of London, London, UK
| | - William M Drake
- NIHR Barts Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
- St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - Mark Gurnell
- Metabolic Research Laboratories, Welcome Trust-MRC Institute of Metabolic Science, and NIHR Cambridge Biomedical Research Centre, Cambridge Biomedical Campus, Cambridge, UK
| | - Jiri Ceral
- 1st Department of Internal Medicine-Cardioangiology, Charles University Faculty of Medicine in Hradec Kralove and University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Ales Ryska
- Department of Pathology, Charles University Faculty of Medicine in Hradec Kralove and University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Muaatamarulain Mustangin
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Yin Ping Wong
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Geok Chin Tan
- Department of Pathology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Miroslav Solar
- 1st Department of Internal Medicine-Cardioangiology, Charles University Faculty of Medicine in Hradec Kralove and University Hospital Hradec Kralove, Hradec Kralove, Czech Republic
| | - Martin Reincke
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, Munich, Germany
| | - William E Rainey
- Division of Metabolism, Endocrinology, and Diabetes, University of Michigan, Ann Arbor, MI, USA
| | - Roger S Foo
- Cardiovascular Disease Translational Research Programme, Department of Medicine, National University of Singapore, Singapore, Singapore
| | - Yutaka Takaoka
- Department of Computational Drug Design and Mathematical Medicine, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyoma, Japan
| | - Sandra A Murray
- Department of Cell Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Maria-Christina Zennaro
- Université Paris Cité, PARCC, Inserm, Paris, France
- Assistance Publique-Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Service de Génétique, Paris, France
| | - Felix Beuschlein
- Klinik für Endokrinologie, Diabetologie und Klinische Ernährung, UniversitätsSpital Zürich (USZ) und Universität Zürich (UZH), Zurich, Switzerland
- Medizinische Klinik und Poliklinik IV, Klinikum der Universität, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Morris J Brown
- Endocrine Hypertension, Department of Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, Queen Mary University of London, London, UK.
- NIHR Barts Biomedical Research Centre, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK.
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3
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Hagiyama M, Mimae T, Wada A, Takeuchi F, Yoneshige A, Inoue T, Kotoku N, Hamada H, Sekido Y, Okada M, Ito A. Possible Therapeutic Utility of anti-Cell Adhesion Molecule 1 Antibodies for Malignant Pleural Mesothelioma. Front Cell Dev Biol 2022; 10:945007. [PMID: 35903548 PMCID: PMC9315061 DOI: 10.3389/fcell.2022.945007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 06/23/2022] [Indexed: 11/15/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is a highly aggressive malignant tumor, and the effective therapeutic drugs are limited. Thus, the establishment of novel therapeutic method is desired. Considerable proportion of MPMs are shown to express cell adhesion molecule 1 (CADM1), and to use CADM1 to bind to and proliferate on the pleural mesothelial surface, suggesting that CADM1 is a possible therapeutic target. Here, anti-CADM1 ectodomain chicken monoclonal antibodies, 3E1 and 9D2, were examined for their possible therapeutic utility. The full-length form of CADM1 was expressed in eight out of twelve human MPM cell lines. MPM cell lines were cultured on a confluent monolayer of mesothelial MeT-5A cells in the presence of 9D2, the neutralizing antibody. 9D2 suppressed the cell growth of CADM1-positive MPM cells with the loss and aggregation of CADM1 molecules on the MPM cell membrane, but not of CADM1-negative MPM cells. Co-addition of 3E1, lacking the neutralizing action, enhanced the growth-suppressive effect of 9D2. The two antibodies were tested as drug delivery vectors. 3E1 was converted into a humanized antibody (h3E1) and conjugated with monomethyl auristatin E (MMAE), a tubulin polymerization inhibitor. When the resulting h3E1–MMAE antibody-drug conjugate (ADC) was added to the standard cultures of CADM1-positive MPM cells, it suppressed the cell growth in a dose-dependent manner. Co-addition of 9D2 enhanced the growth-suppressive effect of h3E1–MMAE ADC. Anti-CADM1 ectodomain antibodies were suggested to serve as both antibody drugs and drug vectors in the treatment of MPM.
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Affiliation(s)
- Man Hagiyama
- Department of Pathology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Takahiro Mimae
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Akihiro Wada
- Department of Pathology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Fuka Takeuchi
- Division of Molecular Pathology, Graduate School of Medical Science, Kindai University, Osaka, Japan
| | - Azusa Yoneshige
- Department of Pathology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Takao Inoue
- Department of Pathology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Naoyuki Kotoku
- College of Pharmaceutical Sciences, Ritsumeikan University, Shiga, Japan
| | - Hironobu Hamada
- Department of Physical Analysis and Therapeutic Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshitaka Sekido
- Division of Cancer Biology, Aichi Cancer Center Research Institute, Nagoya, Japan
| | - Morihito Okada
- Department of Surgical Oncology, Hiroshima University, Hiroshima, Japan
| | - Akihiko Ito
- Department of Pathology, Kindai University Faculty of Medicine, Osaka, Japan
- Division of Molecular Pathology, Graduate School of Medical Science, Kindai University, Osaka, Japan
- *Correspondence: Akihiko Ito,
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4
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A Fully-Human Antibody Specifically Targeting a Membrane-Bound Fragment of CADM1 Potentiates the T Cell-Mediated Death of Human Small-Cell Lung Cancer Cells. Int J Mol Sci 2022; 23:ijms23136895. [PMID: 35805896 PMCID: PMC9266846 DOI: 10.3390/ijms23136895] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/13/2022] [Accepted: 06/20/2022] [Indexed: 11/16/2022] Open
Abstract
Small-cell lung cancer (SCLC) is the most aggressive form of lung cancer and the leading cause of global cancer-related mortality. Despite the earlier identification of membrane-proximal cleavage of cell adhesion molecule 1 (CADM1) in cancers, the role of the membrane-bound fragment of CAMD1 (MF-CADM1) is yet to be clearly identified. In this study, we first isolated MF-CADM1-specific fully human single-chain variable fragments (scFvs) from the human synthetic scFv antibody library using the phage display technology. Following the selected scFv conversion to human immunoglobulin G1 (IgG1) scFv-Fc antibodies (K103.1–4), multiple characterization studies, including antibody cross-species reactivity, purity, production yield, and binding affinity, were verified. Finally, via intensive in vitro efficacy and toxicity evaluation studies, we identified K103.3 as a lead antibody that potently promotes the death of human SCLC cell lines, including NCI-H69, NCI-H146, and NCI-H187, by activated Jurkat T cells without severe endothelial toxicity. Taken together, these findings suggest that antibody-based targeting of MF-CADM1 may be an effective strategy to potentiate T cell-mediated SCLC death, and MF-CADM1 may be a novel potential therapeutic target in SCLC for antibody therapy.
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5
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Sasaki Y, Takagane K, Konno T, Itoh G, Kuriyama S, Yanagihara K, Yashiro M, Yamada S, Murakami S, Tanaka M. Expression of asporin reprograms cancer cells to acquire resistance to oxidative stress. Cancer Sci 2021; 112:1251-1261. [PMID: 33393151 PMCID: PMC7935789 DOI: 10.1111/cas.14794] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/28/2020] [Accepted: 12/30/2020] [Indexed: 12/21/2022] Open
Abstract
Asporin (ASPN), a small leucine‐rich proteoglycan expressed predominantly by cancer associated fibroblasts (CAFs), plays a pivotal role in tumor progression. ASPN is also expressed by some cancer cells, but its biological significance is unclear. Here, we investigated the effects of ASPN expression in gastric cancer cells. Overexpression of ASPN in 2 gastric cancer cell lines, HSC‐43 and 44As3, led to increased migration and invasion capacity, accompanied by induction of CD44 expression and activation of Rac1 and MMP9. ASPN expression increased resistance of HSC‐43 cells to oxidative stress by reducing the amount of mitochondrial reactive oxygen species. ASPN induced expression of the transcription factor HIF1α and upregulated lactate dehydrogenase A (LDHA) and PDH‐E1α, suggesting that ASPN reprograms HSC‐43 cells to undergo anaerobic glycolysis and suppresses ROS generation in mitochondria, which has been observed in another cell line HSC‐44PE. By contrast, 44As3 cells expressed high levels of HIF1α in response to oxidant stress and escaped apoptosis regardless of ASPN expression. Examination of xenografts in the gastric wall of ASPN–/– mice revealed that growth of HSC‐43 tumors with increased micro blood vessel density was significantly accelerated by ASPN; however, ASPN increased the invasion depth of both HSC‐43 and 44As3 tumors. These results suggest that ASPN has 2 distinct effects on cancer cells: HIF1α‐mediated resistance to oxidative stress via reprogramming of glucose metabolism, and activation of CD44‐Rac1 and MMP9 to promote cell migration and invasion. Therefore, ASPN may be a new therapeutic target in tumor fibroblasts and cancer cells in some gastric carcinomas.
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Affiliation(s)
- Yuto Sasaki
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan.,Department of Life Science, Faculty and Graduate School of Engineering and Resource Science, Akita University, Akita, Japan
| | - Kurara Takagane
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - Takumi Konno
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan.,Department of Life Science, Faculty and Graduate School of Engineering and Resource Science, Akita University, Akita, Japan
| | - Go Itoh
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - Sei Kuriyama
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - Kazuyoshi Yanagihara
- Division of Biomarker Discovery, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Masakazu Yashiro
- Department of Surgical Oncology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Satoru Yamada
- Department of Periodontology and Endodontology, Tohoku University Graduate School of Dentistry, Sendai, Japan.,Department of Periodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Shinya Murakami
- Department of Periodontology, Osaka University Graduate School of Dentistry, Osaka, Japan
| | - Masamitsu Tanaka
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
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6
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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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7
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Hagiyama M, Kimura R, Yoneshige A, Inoue T, Otani T, Ito A. Cell Adhesion Molecule 1 Contributes to Cell Survival in Crowded Epithelial Monolayers. Int J Mol Sci 2020; 21:ijms21114123. [PMID: 32527032 PMCID: PMC7312920 DOI: 10.3390/ijms21114123] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/02/2020] [Accepted: 06/06/2020] [Indexed: 12/14/2022] Open
Abstract
When epithelial cells in vivo are stimulated to proliferate, they crowd and often grow in height. These processes are likely to implicate dynamic interactions among lateral membranous proteins, such as cell adhesion molecule 1 (CADM1), an immunoglobulin superfamily member. Pulmonary epithelial cell lines that express CADM1, named NCI-H441 and RLE-6TN, were grown to become overconfluent in the polarized 2D culture system, and were examined for the expression of CADM1. Western analyses showed that the CADM1 expression levels increased gradually up to 3 times in a cell density-dependent manner. Confocal microscopic observations revealed dense immunostaining for CADM1 on the lateral membrane. In the overconfluent monolayers, CADM1 knockdown was achieved by two methods using CADM1-targeting siRNA and an anti-CADM1 neutralizing antibody. Antibody treatment experiments were also done on 6 other epithelial cell lines expressing CADM1. The CADM1 expression levels were reduced roughly by half, in association with cell height decrease by half in 3 lines. TUNEL assays revealed that the CADM1 knockdown increased the proportion of TUNEL-positive apoptotic cells approximately 10 folds. Increased expression of CADM1 appeared to contribute to cell survival in crowded epithelial monolayers.
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8
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Hagiyama M, Nakatani Y, Takashima Y, Kato T, Inoue T, Kimura R, Otani T, Sato Y, Mori H, Arima S, Ito A. Urinary Cell Adhesion Molecule 1 Is a Novel Biomarker That Links Tubulointerstitial Damage to Glomerular Filtration Rates in Chronic Kidney Disease. Front Cell Dev Biol 2019; 7:111. [PMID: 31316980 PMCID: PMC6610501 DOI: 10.3389/fcell.2019.00111] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 06/03/2019] [Indexed: 12/25/2022] Open
Abstract
Cell adhesion molecule 1 (CADM1) is an immunoglobulin superfamily member strongly expressed on renal tubular epithelia in the urinary tract. Enzymatic cleavage of its ectodomain increases in chronic kidney disease (CKD), and is assumed to contribute to tubulointerstitial lesion formation. Because the cleaved ectodomain fragments are likely to be released into the urine, a sandwich enzyme-linked immunosorbent assay (ELISA) system for urinary CADM1 was developed using two anti-ectodomain antibodies. Urinary CADM1 concentrations in patients with CKD based on various forms of glomerulonephritis and nephropathy (n = 127) were measured. A total of 44 patients (35%) had elevated CADM1 concentrations over the normal upper limit (362 pg/mL), with a mean of 1,727 pg/mL. Renal biopsy specimens of all patients were pathologically scored for tubulointerstitial lesions using epithelial degeneration, interstitial inflammation, and fibrosis. There were no correlations between urinary CADM1 concentrations and pathological scores or any widely used renal markers, including glomerular filtration rate (GFR), but there was a weak inverse correlation between pathological scores and GFR (R2 = 0.292). Notably, this correlation gradually increased in patients with increasing CADM1 concentrations, and reached a maximum R2 (0.899) at a cutoff of 1,569 pg/mL. The results of this study suggest that urinary CADM1 is a useful marker indicating tubulointerstitial damage from elevated GFR levels in CKD.
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Affiliation(s)
- Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Yoshihisa Nakatani
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Yasutoshi Takashima
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Takashi Kato
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Takao Inoue
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Ryuichiro Kimura
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Tomoyuki Otani
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Yasufumi Sato
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Hideo Mori
- Department of Pathology, Osaka Rosai Hospital, Sakai, Japan
| | - Shuji Arima
- Division of Nephrology, Department of Internal Medicine, Faculty of Medicine, Kindai University, Osakasayama, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University, Osakasayama, Japan
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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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Tanaka M, Kuriyama S, Itoh G, Maeda D, Goto A, Tamiya Y, Yanagihara K, Yashiro M, Aiba N. Mesothelial Cells Create a Novel Tissue Niche That Facilitates Gastric Cancer Invasion. Cancer Res 2016; 77:684-695. [PMID: 27895076 DOI: 10.1158/0008-5472.can-16-0964] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 10/28/2016] [Accepted: 11/01/2016] [Indexed: 11/16/2022]
Abstract
Peritoneal mesothelial cells (PMC) cover organ surfaces in the abdominal cavity. In this study, lineage tracing revealed that the PMCs guide cancer cell invasion in the gastric wall and in peritoneal metastatic lesions. Serosal PMCs covering the stomach surface entered the gastric wall to create a novel niche that favored gastric cancer cell invasion. PMC infiltration was induced by incorporation of cancer cell-derived, Wnt3a-containing extracellular vesicles. Infiltrated PMCs in turn promoted subserosal invasion of cancer cells. Mutual attraction between cancer cells and PMCs accelerated tumor invasion in the gastric wall, and PMC-led cancer cell invasion in disseminated tumors within the abdominal wall and diaphragm. Addition of the carboxyl terminus of Dickkopf-1 attenuated directional invasion of PMCs toward cancer cells both in vitro and in the gastric wall in vivo PMCs were sensitive to the aldehyde dehydrogenase (ALDH) inhibitor disulfiram (DSF), as ALDH activity is elevated in PMCs. Wnt3a upregulated ALDH, and addition of DSF inhibited the invasive properties of PMCs, whereas DSF pretreatment suppressed gastric infiltration of PMCs and subserosal invasion by cancer cells. Our results suggest that stabilization of PMCs may become an effective therapy for the prevention of local invasion and metastasis of gastric cancer. Cancer Res; 77(3); 684-95. ©2016 AACR.
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Affiliation(s)
- Masamitsu Tanaka
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan.
| | - Sei Kuriyama
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - Go Itoh
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - Daichi Maeda
- Department of Cellular and Organ Pathology, Akita University Graduate School of Medicine, Akita, Japan
| | - Akiteru Goto
- Department of Cellular and Organ Pathology, Akita University Graduate School of Medicine, Akita, Japan
| | - Yutaro Tamiya
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan.,Department of Life Science, Faculty and Graduate School of Engineering and Resource Science, Akita University, Akita, Japan
| | - Kazuyoshi Yanagihara
- Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Chiba, Japan
| | - Masakazu Yashiro
- Department of Surgical Oncology, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka, Japan
| | - Namiko Aiba
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
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Yoneshige A, Hagiyama M, Inoue T, Tanaka T, Ri A, Ito A. Modest Static Pressure Can Cause Enteric Nerve Degeneration Through Ectodomain Shedding of Cell Adhesion Molecule 1. Mol Neurobiol 2016; 54:6378-6390. [PMID: 27722927 DOI: 10.1007/s12035-016-0166-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/27/2016] [Indexed: 12/20/2022]
Abstract
Internal pressure is often involved in neurodegeneration; intraocular and intraventricular pressure elevations over 20-30 cmH2O cause glaucoma and hydrocephalus, respectively. Here, we investigated enteric nerve degeneration in colon segments having tumor-induced stenosis and dilation and examined the mechanism of intraluminal pressure involvement. Histological examination revealed that the enteric ganglion neurons and neurites decreased in density in the dilated colons proportionate to the degree of dilation. Western blot analysis for cell adhesion molecule 1 (CADM1), an immunoglobulin superfamily member expressed in enteric neurons, revealed that ectodomain shedding of CADM1 increased proportionate to colon dilation, with increased production of its C-terminal fragment αCTF, a proapoptotic intracellular molecule. To link these neurodegenerative events to increased intraluminal pressure, we devised a two-chamber culture system wherein cells cultured on a semipermeable membrane were subjected to increased medium height (water pressure up to 50 cmH2O). Mouse dorsal root ganglion (DRG) neurons were examined for expansion of their neurite networks in this system. As the pressure increased to 15, 30, and 45 cmH2O, the neurites decreased in density and became thinner. In addition, CADM1 shedding increased with more αCTF production. CADM1 immunofluorescence and Mitotracker mitochondrial labeling revealed that as the pressure increased, neuritic CADM1 distribution changed from uniform to punctate staining patterns, and neuritic mitochondria decreased in number and appeared as course particles. These pressure-induced phenotypes were reproduced by exogenous expression of αCTF in standard DRG neuron cultures. Therefore, increases in colonic intraluminal pressure might cause enteric nerve degeneration by inducing CADM1 shedding and αCTF production.
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Affiliation(s)
- Azusa Yoneshige
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, 589-8511, Japan
| | - Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, 589-8511, Japan
| | - Takao Inoue
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, 589-8511, Japan
| | - Tomonori Tanaka
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, 589-8511, Japan
| | - Aritoshi Ri
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, 589-8511, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University, Osaka, 589-8511, Japan.
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12
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Fujita M, Matsui T, Ito A. Biomedical insights into cell adhesion and migration-from a viewpoint of central nervous system tumor immunology. Front Cell Dev Biol 2015; 3:55. [PMID: 26528477 PMCID: PMC4604325 DOI: 10.3389/fcell.2015.00055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/08/2015] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mitsugu Fujita
- Department of Microbiology, Faculty of Medicine, Kindai University Osaka, Japan
| | - Takaaki Matsui
- Gene Regulation Research, Graduate School of Biological Sciences, Nara Institute of Science and Technology Nara, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kindai University Osaka, Japan
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Splicing Regulation of Pro-Inflammatory Cytokines and Chemokines: At the Interface of the Neuroendocrine and Immune Systems. Biomolecules 2015; 5:2073-100. [PMID: 26371053 PMCID: PMC4598789 DOI: 10.3390/biom5032073] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 08/28/2015] [Indexed: 01/13/2023] Open
Abstract
Alternative splicing plays a key role in posttranscriptional regulation of gene expression, allowing a single gene to encode multiple protein isoforms. As such, alternative splicing amplifies the coding capacity of the genome enormously, generates protein diversity, and alters protein function. More than 90% of human genes undergo alternative splicing, and alternative splicing is especially prevalent in the nervous and immune systems, tissues where cells need to react swiftly and adapt to changes in the environment through carefully regulated mechanisms of cell differentiation, migration, targeting, and activation. Given its prevalence and complexity, this highly regulated mode of gene expression is prone to be affected by disease. In the following review, we look at how alternative splicing of signaling molecules—cytokines and their receptors—changes in different pathological conditions, from chronic inflammation to neurologic disorders, providing means of functional interaction between the immune and neuroendocrine systems. Switches in alternative splicing patterns can be very dynamic and can produce signaling molecules with distinct or antagonistic functions and localization to different subcellular compartments. This newly discovered link expands our understanding of the biology of immune and neuroendocrine cells, and has the potential to open new windows of opportunity for treatment of neurodegenerative disorders.
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Hagiyama M, Yoneshige A, Inoue T, Sato Y, Mimae T, Okada M, Ito A. The intracellular domain of cell adhesion molecule 1 is present in emphysematous lungs and induces lung epithelial cell apoptosis. J Biomed Sci 2015; 22:67. [PMID: 26259600 PMCID: PMC4531499 DOI: 10.1186/s12929-015-0173-8] [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: 04/16/2015] [Accepted: 07/30/2015] [Indexed: 12/20/2022] Open
Abstract
Background Pulmonary emphysema is characterized histologically by destruction of alveolar walls and enlargement of air spaces due to lung epithelial cell apoptosis. Cell adhesion molecule 1 (CADM1) is an immunoglobulin superfamily member expressed in lung epithelial cells. CADM1 generates a membrane-associated C-terminal fragment, αCTF, through A disintegrin- and metalloprotease-10-mediated ectodomain shedding, subsequently releasing the intracellular domain (ICD) through γ-secretase-mediated intramembrane shedding of αCTF. αCTF localizes to mitochondria and induces apoptosis in lung epithelial cells. αCTF contributes to the development and progression of emphysema as a consequence of increased CADM1 ectodomain shedding. The purpose of this study was to examine whether the ICD makes a similar contribution. Results The ICD was synthesized as a 51-amino acid peptide, and its mutant was synthesized by substituting seven amino acids and deleting two amino acids. These peptides were labeled with fluorescein isothiocyanate and were introduced into various cell lines. ICD peptide-derived fluorescence was well visualized in lung epithelial cells at the site of Mitotracker mitochondrial labeling, but was detected in locations other than mitochondria in other cell types. Mutant peptide-derived fluorescence was detected in locations other than mitochondria, even in lung epithelial cells. Terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling assays revealed that transduction of the ICD peptide increased the proportion of apoptotic cells 2- to 5-fold in the lung epithelial cell lines, whereas the mutant peptide did not. Abundance of the ICD was below the Western blot detection limit in emphysematous (n = 4) and control (n = 4) human lungs. However, the ICD was detected only in emphysematous lungs when it was immunoprecipitated with anti-CADM1 antibody (4/4 vs. 0/4, P = 0.029). Conclusions As the abundance of ICD molecules was sparse but present, increased CADM1 shedding appeared to contribute to the development of emphysema by generating αCTF and the ICD in lung epithelial cells. Electronic supplementary material The online version of this article (doi:10.1186/s12929-015-0173-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
| | - Azusa Yoneshige
- 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.
| | - Yasufumi Sato
- 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.
| | - Morihito Okada
- Department of Surgical Oncology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan.
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, 589-8511, Japan.
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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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Inoue T, Hagiyama M, Yoneshige A, Kato T, Enoki E, Maenishi O, Chikugo T, Kimura M, Satou T, Ito A. Increased ectodomain shedding of cell adhesion molecule 1 from pancreatic islets in type 2 diabetic pancreata: correlation with hemoglobin A1c levels. PLoS One 2014; 9:e100988. [PMID: 24964098 PMCID: PMC4071031 DOI: 10.1371/journal.pone.0100988] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2014] [Accepted: 05/31/2014] [Indexed: 01/09/2023] Open
Abstract
Pulmonary emphysema and type 2 diabetes mellitus (T2DM), both caused by lifestyle factors, frequently concur. Respectively, the diseases affect lung alveolar and pancreatic islet cells, which express cell adhesion molecule 1 (CADM1), an immunoglobulin superfamily member. Protease-mediated ectodomain shedding of full-length CADM1 produces C-terminal fragments (CTFs) with proapoptotic activity. In emphysematous lungs, the CADM1 shedding rate and thus the level of CTFs in alveolar cells increase. In this study, CADM1 expression in islet cells was examined by western blotting. Protein was extracted from formalin-fixed, paraffin-embedded sections of pancreata isolated from patients with T2DM (n = 12) or from patients without pancreatic disease (n = 8) at autopsy. After adjusting for the number of islet cells present in the adjacent section, we found that full-length CADM1 decreased in T2DM islets, while ectodomain shedding increased. Hemoglobin A1c levels, measured when patients were alive, correlated inversely with full-length CADM1 levels (P = 0.041) and positively with ectodomain shedding rates (P = 0.001). In immunofluorescence images of T2DM islet cells, CADM1 was detected in the cytoplasm, but not on the cell membrane. Consistently, when MIN6-m9 mouse beta cells were treated with phorbol ester and trypsin to induce shedding, CADM1 immunostaining was diffuse in the cytoplasm. When a form of CTFs was exogenously expressed in MIN6-m9 cells, it localized diffusely in the cytoplasm and increased the number of apoptotic cells. These results suggest that increased CADM1 ectodomain shedding contributes to blood glucose dysregulation in T2DM by decreasing full-length CADM1 and producing CTFs that accumulate in the cytoplasm and promote apoptosis of beta cells. Thus, this study has identified a molecular alteration shared by pulmonary emphysema and T2DM.
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Affiliation(s)
- Takao Inoue
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Man Hagiyama
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Azusa Yoneshige
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Takashi Kato
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Eisuke Enoki
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Osamu Maenishi
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Takaaki Chikugo
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Masatomo Kimura
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Takao Satou
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Akihiko Ito
- Department of Pathology, Faculty of Medicine, Kinki University, Osaka, Japan
- * E-mail:
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Makarchouk VA, Ushakova GO. Redistribution of Cell Adhesion Proteins in the Brain and the Peculiarities of Behavioral Phenomena in Rats with Chronic Pancreatitis. NEUROPHYSIOLOGY+ 2014. [DOI: 10.1007/s11062-014-9425-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Nakamura S, Igarashi M, Kinoshita M, Okano HJ, Okano H. Proposing a new RNA quadruplex structure: j-motif, with possible links to neural development. J Biochem 2014; 155:385-92. [PMID: 24596122 DOI: 10.1093/jb/mvu013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
An RNA-binding protein, hnRNP K, has been studied extensively because of its involvement in neural development through the post-transcriptional regulation of its downstream target genes; however, its binding mode remains unclear. According to structural features of the binding sites, we have presumed the existence of possible unique structures 'j-motifs' that are similar to known i-motifs, the difference being that the initial cluster comprises successive U nucleic acids instead of C. It was suspected that the motifs could be recognized by hnRNP K to regulate the translation levels of target proteins, however, there were virtually no methods to verify their existence except computational methods: regular expression searches and theoretical molecular orbital (MO) calculations. Here, we first show a list of 16 genes having j-motif-like sequences we discovered under refined search conditions. The list was highly related to neural development from both subjective and objective aspects. Additionally, MO calculations revealed the similarity of non-canonical base pairs found in i- and j-motifs qualitatively, leading to a proposal of the possible existence of the j-motifs. When taken into consideration, it was indicated that the j-motifs could be formed and play some role in the neural development.
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Affiliation(s)
- Shingo Nakamura
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555; Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582; Department of Science and Technology, Sophia University,7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554; and Division of Regenerative Medicine, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Mana Igarashi
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555; Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582; Department of Science and Technology, Sophia University,7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554; and Division of Regenerative Medicine, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, JapanPharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555; Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582; Department of Science and Technology, Sophia University,7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554; and Division of Regenerative Medicine, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Mika Kinoshita
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555; Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582; Department of Science and Technology, Sophia University,7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554; and Division of Regenerative Medicine, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Hirotaka J Okano
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555; Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582; Department of Science and Technology, Sophia University,7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554; and Division of Regenerative Medicine, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Hideyuki Okano
- Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555; Department of Physiology, School of Medicine, Keio University, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582; Department of Science and Technology, Sophia University,7-1 Kioi-cho, Chiyoda-ku, Tokyo 102-8554; and Division of Regenerative Medicine, Jikei University School of Medicine, 3-25-8 Nishishinbashi, Minato-ku, Tokyo, 105-8461, Japan
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Satoyoshi R, Kuriyama S, Aiba N, Yashiro M, Tanaka M. Asporin activates coordinated invasion of scirrhous gastric cancer and cancer-associated fibroblasts. Oncogene 2014; 34:650-60. [PMID: 24441039 DOI: 10.1038/onc.2013.584] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 10/10/2013] [Accepted: 12/05/2013] [Indexed: 12/21/2022]
Abstract
Scirrhous gastric cancer, which has the worst prognosis among the various types of gastric cancer, is highly invasive and associated with abundant stromal fibroblasts. Although cancer-associated fibroblasts (CAFs) have been proposed to generate a tumor-supportive extracellular matrix that promotes the expansion of this type of cancer, the molecular mechanisms by which CAFs assist cancer cells are not yet fully understood. Here, we show for the first time that Asporin, a small leucine-rich proteoglycan (SLRP), is predominantly expressed in CAFs, and has essential roles in promoting co-invasion of CAFs and cancer cells. CAFs of scirrhous gastric cancer possess high potential for invasion, and invasion by CAFs frequently proceeded invasion by cancer cells, both in vitro and in vivo. Expression of Asporin was induced in fibroblasts by exposure to gastric cancer cells. Asporin secreted from CAFs activates Rac1 via an interaction with CD44 and promotes invasion by CAFs themselves. Moreover, Asporin promoted invasion by neighboring cancer cells, via paracrine effects mediated by activation of the CD44-Rac1 pathway. These results suggest that Asporin is a unique SLRP that promotes progression of scirrhous gastric cancer and is required for coordinated invasion by CAFs and cancer cells. Therefore, Asporin may represent a new therapeutic target molecule for the development of drugs aimed at manipulating the cancer microenvironment.
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Affiliation(s)
- R Satoyoshi
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - S Kuriyama
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - N Aiba
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
| | - M Yashiro
- Department of Surgical Oncology, Osaka City University Graduate School of Medicine, Abeno-ku, Osaka, Japan
| | - M Tanaka
- Department of Molecular Medicine and Biochemistry, Akita University Graduate School of Medicine, Akita, Japan
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20
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Hagiyama M, Inoue T, Furuno T, Iino T, Itami S, Nakanishi M, Asada H, Hosokawa Y, Ito A. Increased expression of cell adhesion molecule 1 by mast cells as a cause of enhanced nerve-mast cell interaction in a hapten-induced mouse model of atopic dermatitis. Br J Dermatol 2013; 168:771-8. [PMID: 23106683 DOI: 10.1111/bjd.12108] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Neuroimmunological disorders are involved in the pathogenesis of atopic dermatitis (AD), partly through enhanced sensory nerve-skin mast cell interaction. Cell adhesion molecule 1 (CADM1) is a mast-cell adhesion molecule that mediates the adhesion to, and communication with, sympathetic nerves. OBJECTIVES To investigate the role of mast cell CADM1 in the pathogenesis of AD, CADM1 expression levels by comparing between lesional and nonlesional skin mast cells of an AD mouse model, which was developed by repeated application of trinitrochlorobenzene, and to examine, in cocultures, how the alterations in CADM1 detected in lesional mast cells might affect the sensory nerve-mast cell interaction. METHODS AD-like lesional and nonlesional skin mast cells were collected separately by laser capture microdissection. CADM1 expression was examined by reverse transcription-polymerase chain reaction and CADM1 immunohistochemistry. In cocultures, adhesion between dorsal root ganglion (DRG) neurites and IC2 mast cells was analysed by loading a femtosecond laser-induced impulsive force on neurite-attendant IC2 cells, while cellular communication was monitored as the IC2 cellular response ([Ca(2+)]i increase) after nerve-specific stimulant-induced DRG activation. RESULTS AD-like lesional mast cells expressed three-fold more CADM1 transcripts than nonlesional cells. This was supported at the protein level, shown by immunohistochemistry. In coculture, CADM1 overexpression in IC2 cells strengthened DRG neurite-IC2 cell adhesion and doubled the population of IC2 cells responding to DRG activation. A function-blocking anti-CADM1 antibody abolished these effects in a dose-dependent manner. CONCLUSIONS Increased expression of CADM1 in mast cells appeared to be a cause of enhanced sensory nerve-mast cell interaction in a hapten-induced mouse model of AD.
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Affiliation(s)
- M Hagiyama
- Department of Pathology, Faculty of Medicine, Kinki University, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
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21
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Kelemen O, Convertini P, Zhang Z, Wen Y, Shen M, Falaleeva M, Stamm S. Function of alternative splicing. Gene 2013; 514:1-30. [PMID: 22909801 PMCID: PMC5632952 DOI: 10.1016/j.gene.2012.07.083] [Citation(s) in RCA: 515] [Impact Index Per Article: 46.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Revised: 07/21/2012] [Accepted: 07/30/2012] [Indexed: 12/15/2022]
Abstract
Almost all polymerase II transcripts undergo alternative pre-mRNA splicing. Here, we review the functions of alternative splicing events that have been experimentally determined. The overall function of alternative splicing is to increase the diversity of mRNAs expressed from the genome. Alternative splicing changes proteins encoded by mRNAs, which has profound functional effects. Experimental analysis of these protein isoforms showed that alternative splicing regulates binding between proteins, between proteins and nucleic acids as well as between proteins and membranes. Alternative splicing regulates the localization of proteins, their enzymatic properties and their interaction with ligands. In most cases, changes caused by individual splicing isoforms are small. However, cells typically coordinate numerous changes in 'splicing programs', which can have strong effects on cell proliferation, cell survival and properties of the nervous system. Due to its widespread usage and molecular versatility, alternative splicing emerges as a central element in gene regulation that interferes with almost every biological function analyzed.
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Affiliation(s)
- Olga Kelemen
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
| | - Paolo Convertini
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
| | - Zhaiyi Zhang
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
| | - Yuan Wen
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
| | - Manli Shen
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
| | - Marina Falaleeva
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
| | - Stefan Stamm
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, Kentucky, United States of America
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22
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CADM1 is expressed as multiple alternatively spliced functional and dysfunctional isoforms in human mast cells. Mol Immunol 2012; 53:345-54. [PMID: 23063768 PMCID: PMC3550521 DOI: 10.1016/j.molimm.2012.08.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 08/29/2012] [Accepted: 08/30/2012] [Indexed: 02/07/2023]
Abstract
Cell adhesion molecule 1 (CADM1) is implicated in the pathogenesis of several diseases and is responsible for adhesion and survival of mast cells (MCs). Differential expression of CADM1 isoforms was found in different species. We previously cloned SP4, SP1, SP6 and a dysfunctional isoform from human lung MCs (HLMCs) and the MC line HMC-1. The aim of this study was to identify all isoforms expressed in human MCs. The functional isoforms SP4, SP1, SP6 and SP3, with alternative splicing between exons 7/11, were detected in human MCs by RT-PCR. Two dysfunctional isoforms with alternative splicing of cryptic exons A and B between exons 1/2, leading to premature termination of translation, were found in ∼40% of MC specimens. Sequencing of genomic DNA showed that splicing of cryptic exon B did not result from specific SNPs within this exon or its putative splice branch point. Highly glycosylated CADM1 (∼105 kDa) was detected by western blotting, but an extracellular domain (∼95 kDa) was found only in the culture medium from HLMCs, but not HMC-1 cells, indicating differential protein expression. Transfection of SP1 and SP6, but not SP4, reduced adhesion of HMC-1 cells to human lung fibroblasts but not airway smooth muscle cells. Hence, dysfunctional and functional CADM1 isoforms are found in human MCs. The longer SP1 and SP6 were most evident in differentiated HLMCs and displayed differential adhesion compared to SP4. These multiple isoforms are likely to contribute to MC function in both health and disease.
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23
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Rollenhagen M, Kuckuck S, Ulm C, Hartmann M, Galuska SP, Geyer R, Geyer H, Mühlenhoff M. Polysialylation of the synaptic cell adhesion molecule 1 (SynCAM 1) depends exclusively on the polysialyltransferase ST8SiaII in vivo. J Biol Chem 2012; 287:35170-35180. [PMID: 22908220 DOI: 10.1074/jbc.m112.375642] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Polysialic acid is a unique carbohydrate polymer specifically attached to a limited number of glycoproteins. Among them is synaptic cell adhesion molecule 1 (SynCAM 1), a member of the immunoglobulin (Ig) superfamily composed of three extracellular Ig-like domains. Polysialylation of SynCAM 1 is cell type-specific and was exclusively found in NG2 cells, a class of multifunctional progenitor cells that form specialized synapses with neurons. Here, we studied the molecular requirements for SynCAM 1 polysialylation. Analysis of mice lacking one of the two polysialyltransferases, ST8SiaII or ST8SiaIV, revealed that polysialylation of SynCAM 1 is exclusively mediated by ST8SiaII throughout postnatal brain development. Alternative splicing of the three variable exons 8a, 8b, and 8c can theoretically give rise to eight transmembrane isoforms of SynCAM 1. We detected seven transcript variants in the developing mouse brain, including three variants containing exon 8c, which was so far regarded as a cryptic exon in mice. Polysialylation of SynCAM 1 was restricted to four isoforms in perinatal brain. However, cell culture experiments demonstrated that all transmembrane isoforms of SynCAM 1 can be polysialylated by ST8SiaII. Moreover, analysis of domain deletion constructs revealed that Ig1, which harbors the polysialylation site, is not sufficient as an acceptor for ST8SiaII. The minimal polypeptide required for polysialylation contained Ig1 and Ig2, suggesting an important role for Ig2 as a docking site for ST8SiaII.
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Affiliation(s)
- Manuela Rollenhagen
- Institute of Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Sarah Kuckuck
- Institute of Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Christina Ulm
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, 35392 Giessen, Germany
| | - Maike Hartmann
- Institute of Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany
| | - Sebastian P Galuska
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, 35392 Giessen, Germany
| | - Rudolf Geyer
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, 35392 Giessen, Germany
| | - Hildegard Geyer
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, 35392 Giessen, Germany
| | - Martina Mühlenhoff
- Institute of Cellular Chemistry, Hannover Medical School, 30625 Hannover, Germany.
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24
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He Q, Man L, Ji Y, Zhang S, Jiang M, Ding F, Gu X. Comparative Proteomic Analysis of Differentially Expressed Proteins between Peripheral Sensory and Motor Nerves. J Proteome Res 2012; 11:3077-89. [DOI: 10.1021/pr300186t] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qianru He
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
| | - Lili Man
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
| | - Yuhua Ji
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
| | - Shuqiang Zhang
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
| | - Maorong Jiang
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
| | - Fei Ding
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
| | - Xiaosong Gu
- Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu Province 226001,
P. R. China
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Nagara Y, Hagiyama M, Hatano N, Futai E, Suo S, Takaoka Y, Murakami Y, Ito A, Ishiura S. Tumor suppressor cell adhesion molecule 1 (CADM1) is cleaved by a disintegrin and metalloprotease 10 (ADAM10) and subsequently cleaved by γ-secretase complex. Biochem Biophys Res Commun 2011; 417:462-7. [PMID: 22172944 DOI: 10.1016/j.bbrc.2011.11.140] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Accepted: 11/29/2011] [Indexed: 11/17/2022]
Abstract
Cell adhesion molecule 1 (CADM1) is a type I transmembrane glycoprotein expressed in various tissues. CADM1 is a cell adhesion molecule with many functions, including roles in tumor suppression, apoptosis, mast cell survival, synapse formation, and spermatogenesis. CADM1 undergoes membrane-proximal cleavage called shedding, but the sheddase and mechanisms of CADM1 proteolysis have not been reported. We determined the cleavage site involved in CADM1 shedding by LC/MS/MS and showed that CADM1 shedding occurred in the membrane fraction and was inhibited by tumor necrosis factor-α protease inhibitor-1 (TAPI-1). An siRNA experiment revealed that ADAM10 mediates endogenous CADM1 shedding. In addition, the membrane-bound fragment generated by shedding was further cleaved by γ-secretase and generated CADM1-intracellular domain (ICD) in a mechanism called regulated intramembrane proteolysis (RIP). These results clarify the detailed mechanism of membrane-proximal cleavage of CADM1, suggesting the possibility of RIP-mediated CADM1 signaling.
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Affiliation(s)
- Yusuke Nagara
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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26
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Ito T, Williams-Nate Y, Iwai M, Tsuboi Y, Hagiyama M, Ito A, Sakurai-Yageta M, Murakami Y. Transcriptional regulation of the CADM1 gene by retinoic acid during the neural differentiation of murine embryonal carcinoma P19 cells. Genes Cells 2011; 16:791-802. [DOI: 10.1111/j.1365-2443.2011.01525.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Aberrant expression of tumor suppressors CADM1 and 4.1B in invasive lesions of primary breast cancer. Breast Cancer 2011; 19:242-52. [PMID: 21526423 DOI: 10.1007/s12282-011-0272-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2010] [Accepted: 04/04/2011] [Indexed: 02/06/2023]
Abstract
BACKGROUND The tumor suppressor genes CADM1/TSLC1 and DAL-1/4.1B are frequently inactivated by promoter methylation in non-small cell lung cancer. The proteins they encode, CADM1 and 4.1B, form a complex in human epithelial cells and are involved in cell-cell adhesion. METHODS Expression of CADM1 and 4.1B proteins was examined by immunohistochemistry in 67 primary breast cancer and adjacent noncancerous tissues. CADM1 and 4.1B messenger RNA (mRNA) was detected by reverse-transcription polymerase chain reaction (RT-PCR). The methylation status of the CADM1 and 4.1B promoters was determined quantitatively by bisulfite treatment followed by pyrosequencing. RESULTS CADM1 and 4.1B protein signals were detected along the cell membrane in normal mammary epithelia. By contrast, 47 (70%) and 49 (73%) of 67 primary breast cancers showed aberrant CADM1 and 4.1B staining, respectively. Aberrant CADM1 staining was more frequently observed in pT2 and pT3 tumors and for stages II and III (P = 0.045 and P = 0.020, respectively), while aberrant 4.1B staining was more often observed in tumors with lymph node metastasis, for pT2 and pT3 tumors, and for stages II and III (P = 0.0058, P = 0.0098, and P = 0.0007, respectively). Furthermore, aberrant CADM1 and 4.1B expression was preferentially observed in invasive relative to noninvasive lesions from the same specimen (P = 0.036 and P = 0.0009, respectively). Finally, hypermethylation of CADM1 and 4.1B genes was detected in 46% and 42% of primary breast cancers, respectively. CONCLUSIONS Our findings suggest that aberrant CADM1 and 4.1B expression is involved in progression of breast cancer, especially in invasion into the stroma and metastasis.
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28
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Hagiyama M, Furuno T, Hosokawa Y, Iino T, Ito T, Inoue T, Nakanishi M, Murakami Y, Ito A. Enhanced nerve-mast cell interaction by a neuronal short isoform of cell adhesion molecule-1. THE JOURNAL OF IMMUNOLOGY 2011; 186:5983-92. [PMID: 21482734 DOI: 10.4049/jimmunol.1002244] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Close apposition of nerve and mast cells is viewed as a functional unit of neuro-immune mechanisms, and it is sustained by trans-homophilic binding of cell adhesion molecule-1 (CADM1), an Ig superfamily member. Cerebral nerve-mast cell interaction might be developmentally modulated, because the alternative splicing pattern of four (a-d) types of CADM1 transcripts drastically changed during development of the mouse cerebrum: developing cerebrums expressed CADM1b and CADM1c exclusively, while mature cerebrums expressed CADM1d additionally and predominantly. To probe how individual isoforms are involved in nerve-mast cell interaction, Neuro2a neuroblastoma cells that express CADM1c endogenously were modified to express additionally either CADM1b (Neuro2a-CADM1b) or CADM1d (Neuro2a-CADM1d), and they were cocultured with mouse bone marrow-derived mast cells (BMMCs) and BMMC-derived cell line IC-2 cells, both of which expressed CADM1c. BMMCs were found to adhere to Neuro2a-CADM1d neurites more firmly than to Neuro2a-CADM1b neurites when the adhesive strengths were estimated from the femtosecond laser-induced impulsive forces minimally required for detaching BMMCs. GFP-tagging and crosslinking experiments revealed that the firmer adhesion site consisted of an assembly of CADM1d cis-homodimers. When Neuro2a cells were specifically activated by histamine, intracellular Ca(2+) concentration was increased in 63 and 38% of CADM1c-expressing IC-2 cells that attached to the CADM1d assembly site and elsewhere, respectively. These results indicate that CADM1d is a specific neuronal isoform that enhances nerve-mast cell interaction, and they suggest that nerve-mast cell interaction may be reinforced as the brain grows mature because CADM1d becomes predominant.
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Affiliation(s)
- Man Hagiyama
- Division of Molecular Pathology, Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo 108-8639, Japan
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