1
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Savina A, Jaffredo T, Saldmann F, Faulkes CG, Moguelet P, Leroy C, Marmol DD, Codogno P, Foucher L, Zalc A, Viltard M, Friedlander G, Aractingi S, Fontaine RH. Single-cell transcriptomics reveals age-resistant maintenance of cell identities, stem cell compartments and differentiation trajectories in long-lived naked mole-rats skin. Aging (Albany NY) 2022; 14:3728-3756. [PMID: 35507806 PMCID: PMC9134947 DOI: 10.18632/aging.204054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 04/25/2022] [Indexed: 11/25/2022]
Abstract
Naked mole-rats (NMR) are subterranean rodents characterized by an unusual longevity coupled with an unexplained resistance to aging. In the present study, we performed extensive in situ analysis and single-cell RNA-sequencing comparing young and older animals. At variance with other species, NMR exhibited a striking stability of skin compartments and cell types, which remained stable over time without aging-associated changes. Remarkably, the number of stem cells was constant throughout aging. We found three classical cellular states defining a unique keratinocyte differentiation trajectory that were not altered after pseudo-temporal reconstruction. Epidermal gene expression did not change with aging either. Langerhans cell clusters were conserved, and only a higher basal stem cell expression of Igfbp3 was found in aged animals. In accordance, NMR skin healing closure was similar in young and older animals. Altogether, these results indicate that NMR skin is characterized by peculiar genetic and cellular features, different from those previously demonstrated for mice and humans. The remarkable stability of the aging NMR skin transcriptome likely reflects unaltered homeostasis and resilience.
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Affiliation(s)
| | - Thierry Jaffredo
- Institut de Biologie Paris Seine (IBPS), Laboratoire de Biologie du Développement, Sorbonne Université, CNRS, INSERM, Paris, France
| | | | - Chris G Faulkes
- Queen Mary University of London, School of Biological and Chemical Sciences, London, United Kingdom
| | - Philippe Moguelet
- Service d'Anatomie et Cytologie Pathologiques, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Christine Leroy
- Université Paris Cité, CNRS, INSERM, Institut Necker-Enfants Malades, Paris, France
| | | | - Patrice Codogno
- Université Paris Cité, CNRS, INSERM, Institut Necker-Enfants Malades, Paris, France
| | - Lucy Foucher
- Ecole Nationale Vétérinaire d'Alfort, Centre de Recherche Biomédicale, Maisons-Alfort, France
| | - Antoine Zalc
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, France
| | - Mélanie Viltard
- Fondation pour la Recherche en Physiologie, Brussels, Belgium
| | - Gérard Friedlander
- Université Paris Cité, CNRS, INSERM, Institut Necker-Enfants Malades, Paris, France
| | - Selim Aractingi
- Université Paris Cité, CNRS, INSERM, Institut Cochin, Paris, France.,Service de Dermatologie, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, France
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2
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Terkelsen T, Pernemalm M, Gromov P, Børresen-Dale AL, Krogh A, Haakensen VD, Lethiö J, Papaleo E, Gromova I. High-throughput proteomics of breast cancer interstitial fluid: identification of tumor subtype-specific serologically relevant biomarkers. Mol Oncol 2021; 15:429-461. [PMID: 33176066 PMCID: PMC7858121 DOI: 10.1002/1878-0261.12850] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Revised: 08/13/2020] [Accepted: 11/09/2020] [Indexed: 12/24/2022] Open
Abstract
Despite significant advancements in breast cancer (BC) research, clinicians lack robust serological protein markers for accurate diagnostics and tumor stratification. Tumor interstitial fluid (TIF) accumulates aberrantly externalized proteins within the local tumor space, which can potentially gain access to the circulatory system. As such, TIF may represent a valuable starting point for identifying relevant tumor-specific serological biomarkers. The aim of the study was to perform comprehensive proteomic profiling of TIF to identify proteins associated with BC tumor status and subtype. A liquid chromatography tandem mass spectrometry (LC-MS/MS) analysis of 35 TIFs of three main subtypes: luminal (19), Her2 (4), and triple-negative (TNBC) (12) resulted in the identification of > 8800 proteins. Unsupervised hierarchical clustering segregated the TIF proteome into two major clusters, luminal and TNBC/Her2 subgroups. High-grade tumors enriched with tumor infiltrating lymphocytes (TILs) were also stratified from low-grade tumors. A consensus analysis approach, including differential abundance analysis, selection operator regression, and random forest returned a minimal set of 24 proteins associated with BC subtypes, receptor status, and TIL scoring. Among them, a panel of 10 proteins, AGR3, BCAM, CELSR1, MIEN1, NAT1, PIP4K2B, SEC23B, THTPA, TMEM51, and ULBP2, was found to stratify the tumor subtype-specific TIFs. In particular, upregulation of BCAM and CELSR1 differentiates luminal subtypes, while upregulation of MIEN1 differentiates Her2 subtypes. Immunohistochemistry analysis showed a direct correlation between protein abundance in TIFs and intratumor expression levels for all 10 proteins. Sensitivity and specificity were estimated for this protein panel by using an independent, comprehensive breast tumor proteome dataset. The results of this analysis strongly support our data, with eight of the proteins potentially representing biomarkers for stratification of BC subtypes. Five of the most representative proteomics databases currently available were also used to estimate the potential for these selected proteins to serve as putative serological markers.
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Affiliation(s)
- Thilde Terkelsen
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Maria Pernemalm
- Cancer Proteomics Mass Spectrometry, Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Pavel Gromov
- Breast Cancer Biology Group, Genome Integrity Unit, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Anna-Lise Børresen-Dale
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Norway
| | - Anders Krogh
- Department of Computer Science, University of Copenhagen, Denmark.,Department of Biology, University of Copenhagen, Denmark
| | - Vilde D Haakensen
- Department of Cancer Genetics, Institute for Cancer Research, The Norwegian Radium Hospital, Oslo University Hospital, Norway
| | - Janne Lethiö
- Cancer Proteomics Mass Spectrometry, Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Elena Papaleo
- Computational Biology Laboratory, Danish Cancer Society Research Center, Copenhagen, Denmark.,Translational Disease System Biology, Faculty of Health and Medical Sciences, Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Denmark
| | - Irina Gromova
- Breast Cancer Biology Group, Genome Integrity Unit, Danish Cancer Society Research Center, Copenhagen, Denmark
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3
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Guadall A, Cochet S, Renaud O, Colin Y, Le Van Kim C, de Brevern AG, El Nemer W. Dimerization and phosphorylation of Lutheran/basal cell adhesion molecule are critical for its function in cell migration on laminin. J Biol Chem 2019; 294:14911-14921. [PMID: 31413112 DOI: 10.1074/jbc.ra119.007521] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 07/02/2019] [Indexed: 12/11/2022] Open
Abstract
Tumor cell migration depends on the interactions of adhesion proteins with the extracellular matrix. Lutheran/basal cell adhesion molecule (Lu/BCAM) promotes tumor cell migration by binding to laminin α5 chain, a subunit of laminins 511 and 521. Lu/BCAM is a type I transmembrane protein with a cytoplasmic domain of 59 (Lu) or 19 (Lu(v13)) amino acids. Here, using an array of techniques, including site-directed mutagenesis, immunoblotting, FRET, and proximity-ligation assays, we show that both Lu and Lu(v13) form homodimers at the cell surface of epithelial cancer cells. We mapped two small-XXX-small motifs in the transmembrane domain as potential sites for monomers docking and identified three cysteines in the cytoplasmic domain as being critical for covalently stabilizing dimers. We further found that Lu dimerization and phosphorylation of its cytoplasmic domain were concomitantly needed to promote cell migration. We conclude that Lu is the critical isoform supporting tumor cell migration on laminin 521 and that the Lu:Lu(v13) ratio at the cell surface may control the balance between cellular firm adhesion and migration.
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Affiliation(s)
- Anna Guadall
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France.,Institut National de la Transfusion Sanguine, F-75015 Paris, France.,Laboratoire d'Excellence GR-Ex, 75015 Paris, France
| | - Sylvie Cochet
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France.,Institut National de la Transfusion Sanguine, F-75015 Paris, France.,Laboratoire d'Excellence GR-Ex, 75015 Paris, France
| | - Olivier Renaud
- Institut Curie, Paris Sciences et Lettres Research University, 75005 Paris, France.,U934, Institut National de la Santé et de la Recherche Médicale, 75005 Paris, France.,UMR3215, Centre National de la Recherche Scientifique, 75005 Paris, France.,Cell and Tissue Imaging Facility (PICT-IBiSA), Institut Curie, 75005 Paris, France
| | - Yves Colin
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France.,Institut National de la Transfusion Sanguine, F-75015 Paris, France.,Laboratoire d'Excellence GR-Ex, 75015 Paris, France
| | - Caroline Le Van Kim
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France.,Institut National de la Transfusion Sanguine, F-75015 Paris, France.,Laboratoire d'Excellence GR-Ex, 75015 Paris, France
| | - Alexandre G de Brevern
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France.,Institut National de la Transfusion Sanguine, F-75015 Paris, France.,Laboratoire d'Excellence GR-Ex, 75015 Paris, France
| | - Wassim El Nemer
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France .,Institut National de la Transfusion Sanguine, F-75015 Paris, France.,Laboratoire d'Excellence GR-Ex, 75015 Paris, France
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4
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Yost KE, Satpathy AT, Wells DK, Qi Y, Wang C, Kageyama R, McNamara KL, Granja JM, Sarin KY, Brown RA, Gupta RK, Curtis C, Bucktrout SL, Davis MM, Chang ALS, Chang HY. Clonal replacement of tumor-specific T cells following PD-1 blockade. Nat Med 2019; 25:1251-1259. [PMID: 31359002 PMCID: PMC6689255 DOI: 10.1038/s41591-019-0522-3] [Citation(s) in RCA: 807] [Impact Index Per Article: 161.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023]
Abstract
Immunotherapies that block inhibitory checkpoint receptors on T cells have transformed the clinical care of patients with cancer1. However, whether the T cell response to checkpoint blockade relies on reinvigoration of pre-existing tumor-infiltrating lymphocytes or on recruitment of novel T cells remains unclear2-4. Here we performed paired single-cell RNA and T cell receptor sequencing on 79,046 cells from site-matched tumors from patients with basal or squamous cell carcinoma before and after anti-PD-1 therapy. Tracking T cell receptor clones and transcriptional phenotypes revealed coupling of tumor recognition, clonal expansion and T cell dysfunction marked by clonal expansion of CD8+CD39+ T cells, which co-expressed markers of chronic T cell activation and exhaustion. However, the expansion of T cell clones did not derive from pre-existing tumor-infiltrating T lymphocytes; instead, the expanded clones consisted of novel clonotypes that had not previously been observed in the same tumor. Clonal replacement of T cells was preferentially observed in exhausted CD8+ T cells and evident in patients with basal or squamous cell carcinoma. These results demonstrate that pre-existing tumor-specific T cells may have limited reinvigoration capacity, and that the T cell response to checkpoint blockade derives from a distinct repertoire of T cell clones that may have just recently entered the tumor.
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Affiliation(s)
- Kathryn E Yost
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA
| | - Ansuman T Satpathy
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.
| | - Daniel K Wells
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA
| | - Yanyan Qi
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Robin Kageyama
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA
| | - Katherine L McNamara
- Department of Medicine, Division of Oncology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Jeffrey M Granja
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
- Program in Biophysics, Stanford University School of Medicine, Stanford, CA, USA
| | - Kavita Y Sarin
- Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, USA
| | - Ryanne A Brown
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, USA
| | - Rohit K Gupta
- Stanford Biobank, Stanford University School of Medicine, Palo Alto, CA, USA
| | - Christina Curtis
- Department of Medicine, Division of Oncology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Mark M Davis
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA
- Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Institute for Immunity, Transplantation and Infection, Stanford University, Stanford, CA, USA
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA
| | - Anne Lynn S Chang
- Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, USA.
| | - Howard Y Chang
- Center for Personal Dynamic Regulomes, Stanford University School of Medicine, Stanford, CA, USA.
- Parker Institute for Cancer Immunotherapy, San Francisco, CA, USA.
- Department of Genetics, Stanford University School of Medicine, Stanford, CA, USA.
- Department of Dermatology, Stanford University School of Medicine, Redwood City, CA, USA.
- Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA, USA.
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5
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Azuma M, Tsukada T, Inagaki T, Casmad F, Jindatip D, Tofrizal A, Maliza R, Batchuluun K, Syaidah R, Ohno N, Fujiwara K, Kikuchi M, Yashiro T. Immunohistochemical Study of the Laminin α5 Chain and Its Specific Receptor, Basal Cell Adhesion Molecule (BCAM), in both Fetal and Adult Rat Pituitary Glands. Acta Histochem Cytochem 2018; 51:145-152. [PMID: 30510328 PMCID: PMC6261841 DOI: 10.1267/ahc.18014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 08/10/2018] [Indexed: 01/01/2023] Open
Abstract
Laminin, a major basement membrane protein, comprises three subunit chains: α, β, and γ chains. Among these chains, only the laminin α chain is capable of signaling via laminin receptors. Although laminin isoforms containing the α5 chain were reported to be the first laminin produced during rat anterior pituitary gland development, the functions of these isoforms are unknown. We used immunohistochemical techniques to localize the laminin α5 chain and its specific receptor, basal cell adhesion molecule (BCAM), in fetal and adult pituitary gland. Laminin α5 chain immunoreactivity was observed in the basement membrane of the primordial adenohypophysis at embryonic days 12.5 to 19.5. Double immunostaining showed that BCAM was present and co-localized with the laminin α5 chain in the tissue. Quantitative analysis showed that the laminin α5 chain and BCAM were expressed in the anterior pituitary gland during postnatal development and in adulthood (postnatal day 60). In the adult gland, co-localization of the laminin α5 chain and BCAM was observed, and BCAM was detected in both the folliculo-stellate cells and endothelial cells. These results suggest that laminin α5 chain signaling via BCAM occurs in both the fetal adenohypophysis and adult anterior pituitary gland.
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Affiliation(s)
- Morio Azuma
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Takehiro Tsukada
- Department of Biomolecular Science, Faculty of Science, Toho University
| | - Takeshi Inagaki
- Division of Forensic Medicine, Department of Anatomy, Jichi Medical University School of Medicine
| | - Fujianti Casmad
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Depicha Jindatip
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Department of Anatomy, Faculty of Medicine, Chulalongkorn University
| | - Alimuddin Tofrizal
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rita Maliza
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Khongorzul Batchuluun
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Rahimi Syaidah
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Nobuhiko Ohno
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Ken Fujiwara
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
| | - Motoshi Kikuchi
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
- Laboratory of Natural History, Jichi Medical University School of Medicine
| | - Takashi Yashiro
- Division of Histology and Cell Biology, Department of Anatomy, Jichi Medical University School of Medicine
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6
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Kikkawa Y, Enomoto-Okawa Y, Fujiyama A, Fukuhara T, Harashima N, Sugawara Y, Negishi Y, Katagiri F, Hozumi K, Nomizu M, Ito Y. Internalization of CD239 highly expressed in breast cancer cells: a potential antigen for antibody-drug conjugates. Sci Rep 2018; 8:6612. [PMID: 29700410 PMCID: PMC5919910 DOI: 10.1038/s41598-018-24961-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 04/12/2018] [Indexed: 01/25/2023] Open
Abstract
Antibody-drug conjugates (ADCs) are attractive in cancer therapy because they can directly bind to cancer cells and provide anticancer activity. To kill cancer cells with ADCs, the target antigens are required not only to be highly and/or selectively expressed on cancer cells but also internalized by the cells. CD239, also known as the Lutheran blood group glycoprotein (Lu) or basal cell adhesion molecule (B-CAM), is a specific receptor for laminin α5, a major component of basement membranes. Here, we show that CD239 is strongly expressed in a subset of breast cancer cells and internalized into the cells. We also produced a human single-chain variable fragment (scFv) specific to CD239 fused with human IgG1 Fc, called C7-Fc. The binding affinity of the C7-Fc antibody is similar to that of mouse monoclonal antibodies. Although the C7-Fc antibody alone does not influence cellular functions, when conjugated with a fragment of diphtheria toxin lacking the receptor-binding domain (fDT), it can selectively kill breast cancer cells. Interestingly, fDT-bound C7-Fc shows anticancer activity in CD239-highly positive SKBR3 cells, but not in weakly positive cells. Our results show that CD239 is a promising antigen for ADC-based breast cancer therapy.
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Affiliation(s)
- Yamato Kikkawa
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan.
| | - Yurie Enomoto-Okawa
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima, 890-0065, Japan
| | - Aiko Fujiyama
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima, 890-0065, Japan
| | - Takeshi Fukuhara
- Laboratory of Oncology, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan.,Department of Neurology, Graduate School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Nozomi Harashima
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Yumika Sugawara
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Yoichi Negishi
- Department of Drug Delivery and Molecular Biopharmaceutics, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Fumihiko Katagiri
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Kentaro Hozumi
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Motoyoshi Nomizu
- Department of Clinical Biochemistry, Tokyo University of Pharmacy and Life Sciences, Tokyo, 192-0392, Japan
| | - Yuji Ito
- Graduate School of Science and Engineering, Kagoshima University, Kagoshima, 890-0065, Japan
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7
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Brusson M, De Grandis M, Cochet S, Bigot S, Marin M, Leduc M, Guillonneau F, Mayeux P, Peyrard T, Chomienne C, Le Van Kim C, Cassinat B, Kiladjian JJ, El Nemer W. Impact of hydroxycarbamide and interferon-α on red cell adhesion and membrane protein expression in polycythemia vera. Haematologica 2018; 103:972-981. [PMID: 29599206 PMCID: PMC6058771 DOI: 10.3324/haematol.2017.182303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/21/2018] [Indexed: 01/13/2023] Open
Abstract
Polycythemia vera is a chronic myeloproliferative neoplasm characterized by the JAK2V617F mutation, elevated blood cell counts and a high risk of thrombosis. Although the red cell lineage is primarily affected by JAK2V617F, the impact of mutated JAK2 on circulating red blood cells is poorly documented. Recently, we showed that in polycythemia vera, erythrocytes had abnormal expression of several proteins including Lu/BCAM adhesion molecule and proteins from the endoplasmic reticulum, mainly calreticulin and calnexin. Here we investigated the effects of hydroxycarbamide and interferon-α treatments on the expression of erythroid membrane proteins in a cohort of 53 patients. Surprisingly, while both drugs tended to normalize calreticulin expression, proteomics analysis showed that hydroxycarbamide deregulated the expression of 53 proteins in red cell ghosts, with overexpression and downregulation of 37 and 16 proteins, respectively. Within over-expressed proteins, hydroxycarbamide was found to enhance the expression of adhesion molecules such as Lu/BCAM and CD147, while interferon-α did not. In addition, we found that hydroxycarbamide increased Lu/BCAM phosphorylation and exacerbated red cell adhesion to its ligand laminin. Our study reveals unexpected adverse effects of hydroxycarbamide on red cell physiology in polycythemia vera and provides new insights into the effects of this molecule on gene regulation and protein recycling or maturation during erythroid differentiation. Furthermore, our study shows deregulation of Lu/BCAM and CD147 that are two ubiquitously expressed proteins linked to progression of solid tumors, paving the way for future studies to address the role of hydroxycarbamide in tissues other than blood cells in myeloproliferative neoplasms.
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Affiliation(s)
- Mégane Brusson
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Maria De Grandis
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Sylvie Cochet
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Sylvain Bigot
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Mickaël Marin
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Marjorie Leduc
- Plateforme de Protéomique de l'Université Paris Descartes (3P5), Institut Cochin, INSERM U1016, CNRS UMR 8104, Université Sorbonne Paris Cité, Laboratoire d'Excellence GR-Ex, Paris
| | - François Guillonneau
- Plateforme de Protéomique de l'Université Paris Descartes (3P5), Institut Cochin, INSERM U1016, CNRS UMR 8104, Université Sorbonne Paris Cité, Laboratoire d'Excellence GR-Ex, Paris
| | - Patrick Mayeux
- Plateforme de Protéomique de l'Université Paris Descartes (3P5), Institut Cochin, INSERM U1016, CNRS UMR 8104, Université Sorbonne Paris Cité, Laboratoire d'Excellence GR-Ex, Paris
| | - Thierry Peyrard
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Christine Chomienne
- Université Sorbonne Paris Cité, Université Paris Diderot, Inserm UMR-S1131, Hôpital Saint Louis, Institut Universitaire d'Hématologie, Laboratoire de Biologie Cellulaire, Paris.,AP-HP, Hôpital Saint-Louis, Laboratoire de Biologie Cellulaire, Paris
| | - Caroline Le Van Kim
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles.,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
| | - Bruno Cassinat
- AP-HP, Hôpital Saint-Louis, Laboratoire de Biologie Cellulaire, Paris
| | - Jean-Jacques Kiladjian
- Centre d'Investigations Cliniques, Hôpital Saint-Louis, Université Paris Diderot, Paris, France
| | - Wassim El Nemer
- Biologie Intégrée du Globule Rouge UMR_S1134, Inserm, Université Paris Diderot, Sorbonne Paris Cité, Université de la Réunion, Université des Antilles .,Institut National de la Transfusion Sanguine, F-75015 Paris.,Laboratoire d'Excellence GR-Ex, Paris
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8
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Chang HY, Chang HM, Wu TJ, Chaing CY, Tzai TS, Cheng HL, Raghavaraju G, Chow NH, Liu HS. The role of Lutheran/basal cell adhesion molecule in human bladder carcinogenesis. J Biomed Sci 2017; 24:61. [PMID: 28841878 PMCID: PMC6389174 DOI: 10.1186/s12929-017-0360-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/03/2017] [Indexed: 11/25/2022] Open
Abstract
Background Lutheran/basal cell adhesion molecule (Lu/BCAM) is a membrane bound glycoprotein. This study was performed to investigate the role and downstream signaling pathway of Lu/BCAM in human bladder tumorigenesis. Methods Five human bladder cancer (E6, RT4, TSGH8301, TCCSUP and J82), one stable mouse fibroblast cell line (NIH-Lu) expressing Lu/BCAM transgene and sixty human uroepithelial carcinoma specimens were analyzed by real-time PCR, immunohistochemistry (IHC), immunofluorescence (IFA) staining, Western blotting and promoter luciferase assay for Lu/BCAM, respectively. The tumorigenicity of Lu/BCAM was demonstrated by focus formation, colony-forming ability, tumour formation, cell adhesion and migration. Results H-rasV12 was revealed to up-regulate Lu/BCAM at both transcriptional and translation levels. Lu/BCAM expression was detected on the membrane of primary human bladder cancer cells. Over-expression of Lu/BCAM in NIH-Lu stable cells increased focus number, colony formation and cell adhesion accompanied with F-actin rearrangement and decreased cell migration compared with parental NIH3T3 fibroblasts. In the presence of laminin ligand, Lu/BCAM overexpression further suppressed cell migration accompanied with increased cell adhesion. We further revealed that laminin-Lu/BCAM-induced cell adhesion and F-actin rearrangement were through increased Erk phosphorylation with an increase of RhoA and a decrease of Rac1 activity. Similarly, high Lu/BCAM expression was detected in the tumors of human renal pelvis, ureter and bladder, and was significantly associated with advanced tumor stage (p = 0.02). Patients with high Lu/BCAM expression showed a trend toward larger tumor size (p = 0.07) and lower disease-specific survival (p = 0.08), although not reaching statistical significance. Conclusion This is the first report showing that Lu/BCAM, in the presence of its ligand laminin, is oncogenic in human urothelial cancers and may have potential as a novel therapeutic target. Electronic supplementary material The online version of this article (doi:10.1186/s12929-017-0360-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hong-Yi Chang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China.,Department of Urology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Hsin-Mei Chang
- Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Tsung-Jung Wu
- Department of Pathology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Chang-Yao Chaing
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Tzong-Shin Tzai
- Department of Urology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Hong-Lin Cheng
- Department of Urology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Giri Raghavaraju
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China
| | - Nan-Haw Chow
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China. .,Department of Pathology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China.
| | - Hsiao-Sheng Liu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China. .,Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China. .,Center of Infectious Disease and Signaling Research, College of Medicine, National Cheng Kung University, Tainan, Taiwan, Republic of China.
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9
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Kim BK, Kim I, Yoon SK. Identification of miR-199a-5p target genes in the skin keratinocyte and their expression in cutaneous squamous cell carcinoma. J Dermatol Sci 2015; 79:137-47. [PMID: 26026896 DOI: 10.1016/j.jdermsci.2015.05.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 04/28/2015] [Accepted: 05/11/2015] [Indexed: 12/19/2022]
Abstract
BACKGROUND MicroRNAs (miRNAs) are small non-coding RNA molecules that mediate the biological cellular processes via regulation of target genes through translational repression or mRNA degradation. Among various miRNAs, miRNA-199a (miR-199a) has been known to be involved in cancer development and progression, protection of cardiomyocyte, and skeletal formation. OBJECTIVE Although miR-199a-5p was studied in various cell types, the role of miR-199a-5p and its target genes in skin keratinocyte have not been documented. In this study, we identified target genes of miR-199a-5p in skin keratinocyte. METHODS In order to identify the target of miR-199a-5p in keratinocyte, microarray analysis was performed. The relative expression of candidate target genes was investigated using quantitative RT-PCR and western blot analysis. To determine whether their expression was directly regulated by miR-199a-5p, luciferase reporter assay was performed. In order to investigate expression of target genes in cutaneous squamous cell carcinoma, immunohistochemistry was performed. RESULTS We identified new target genes, Bcam, Fzd6, and Wnt7a, as well as previously known targets, Ddr1 and Podxl. We found that their expressions were directly regulated by miR-199a-5p in the skin keratinocyte using in vitro study and observed that expression of miR-199a-5p was inversely correlated with those of BCAM, FZD6 and DDR1 in the cSCC. In addition, overexpression of miR-199a-5p resulted in inhibition of the migratory capability of the skin keratinocyte. CONCLUSION These results suggested that miR-199a-5p plays a role in pathogenesis of cSCC via inhibition of invasiveness through regulation of BCAM, FZD6 and DDR1 expression.
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Affiliation(s)
- Bong-Kyu Kim
- Department of Medical Life Sciences, The Catholic University of Korea, Banpodong 505, Seoul 137-701, Seochogu, South Korea
| | - Injung Kim
- Department of Medical Life Sciences, The Catholic University of Korea, Banpodong 505, Seoul 137-701, Seochogu, South Korea
| | - Sungjoo Kim Yoon
- Department of Medical Life Sciences, The Catholic University of Korea, Banpodong 505, Seoul 137-701, Seochogu, South Korea.
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Akiyama H, Iwahana Y, Suda M, Yoshimura A, Kogai H, Nagashima A, Ohtsuka H, Komiya Y, Tashiro F. The FBI1/Akirin2 target gene, BCAM, acts as a suppressive oncogene. PLoS One 2013; 8:e78716. [PMID: 24223164 PMCID: PMC3819372 DOI: 10.1371/journal.pone.0078716] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 09/21/2013] [Indexed: 12/18/2022] Open
Abstract
Basal cell adhesion molecule (BCAM), known to be a splicing variant of Lutheran glycoprotein (LU), is an immunoglobulin superfamily membrane protein that acts as a laminin α5 receptor. The high affinity of BCAM/LU for laminin α5 is thought to contribute to the pathogenesis of sickle red blood cells and to various developmental processes. However, the function of BCAM in carcinogenesis is poorly understood. Based on microarray expression analysis, we found that BCAM was one of the target genes of the oncogenic 14-3-3β-FBI1/Akirin2 complex, which acts as a transcriptional repressor and suppresses MAPK phosphatase-1 gene expression. To elucidate the detailed function of BCAM in malignant tumors, we established BCAM-expressing hepatoma K2 cells. These cells lost the malignant characteristics of parental cells, such as anchorage-independent growth, migration, invasion, and tumorigenicity. Moreover, luciferase reporter assays and chromatin immunoprecipitation analysis revealed that the 14-3-3β-FBI1/Akirin2 complex bound to the BCAM promoter and repressed transcription. Thus, these data indicate that BCAM is a suppressive oncoprotein, and that FBI1/Akirin2 is involved in tumorigenicity and metastasis of hepatoma through the downregulation of suppressive oncogenes.
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MESH Headings
- 14-3-3 Proteins/genetics
- 14-3-3 Proteins/metabolism
- Animals
- Blotting, Northern
- Blotting, Western
- COS Cells
- Cell Line, Tumor
- Chlorocebus aethiops
- Gene Expression Regulation, Neoplastic
- HeLa Cells
- Hep G2 Cells
- Humans
- Liver Neoplasms, Experimental/genetics
- Liver Neoplasms, Experimental/metabolism
- Liver Neoplasms, Experimental/pathology
- Lutheran Blood-Group System/genetics
- Lutheran Blood-Group System/metabolism
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Oncogene Proteins/genetics
- Oncogene Proteins/metabolism
- Promoter Regions, Genetic/genetics
- Protein Binding
- Rats
- Receptors, Laminin/genetics
- Receptors, Laminin/metabolism
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Transcription, Genetic/genetics
- Transplantation, Heterologous
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Affiliation(s)
- Hirotada Akiyama
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
- * E-mail:
| | - Yoshimasa Iwahana
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Mikiya Suda
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Atsunori Yoshimura
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Hiroyuki Kogai
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Ai Nagashima
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Hiroko Ohtsuka
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Yuko Komiya
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
| | - Fumio Tashiro
- Department of Biological Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science, Katsushika-ku, Tokyo, Japan
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Abstract
Abstract
Basal cell carcinoma (BCC) is the most common cancer among Caucasians. It generally occurs on sun-exposed areas of the body, mostly on the head and neck (80%), trunk (15%), rarely on arms and legs. Basal cell carcinoma is a good example of a disease caused by a combination of genetic and environmental factors. Ultraviolet (UV) radiation plays a dual role in the development of BCC: it causes DNA damage and immunosuppression. UVA and UVB rays damage the DNA via various mechanisms. UVB radiation directly damages DNA within skin cells, causing cytosine → thymine mutations at dipyrimidine sites, whereas UVA radiation is 10.000 times less mutagenic, but it is significantly more present in the natural UV radiation. Also, UVA photons have lower energy than UVB photons and do not induce mutations. UV radiation exerts immune suppression by decreasing the antigen presenting cells ability and by producing immunosuppressive cytokines, such as interleukin-10 (IL-10) and tumor necrosis factor alpha (TNF-α). Mediators of UV-induced immunosuppression are DNA and cis-urocanic acid. Several studies showed a significant association between the development of BCC and sun-exposure during childhood and adolescence, and a strong relation with family history of skin cancer. Exposure to ionizing radiation increases the risk of nonmelanoma skin cancers by three times, while the risk is proportional to the radiation dose. Chemical carcinogens, such as arsenic, tar, psoralen, and pesticides, increase risks for nonmelanoma skin cancers, predominantly for squamous cell carcinoma (SCC). Regarding genetic predisposition, there is glutathione S-transferase (GST) as an important part of cellular defense against endogenous and exogenous chemicals. Several polymorphisms in GST family members have been associated with impaired detoxification, thus influencing the risk for some cancers, including nonmelanoma skin cancers. Cytochrome P450 enzymes are involved in detoxification of photosensitizing agents, and thus involved in BCC carcinogenesis. PTCH is a tumor suppressor gene first identified in patients with Gorlin syndrome. Abnormal activation of this gene and its pathways result in various types of tumorigenesis. BCC is associated with homozygous PTCH gene deletion. With regard to acquired genetic mutations, it was found that aggressive BCCs are significantly associated with increased p53 protein expression, probably representing the mutated form, although that assertion could not be established with certainty. Considering the apparently limited contribution of DNA damage and chromosome instability to the expression of BCC phenotype, the relevance of p53 mutations for BCC growth remains to be demonstrated. Data on the role of Bcl-2 gene family in the development of BCC are scarce. It is unclear whether Bcl-2 has a functional role in the development of BCC, or it only indicates the level of gene expression in tumor stem cells. Activation of Ras gene may play an important role during early stages in the development of nonmelanoma skin cancers, and it is often found on UV-exposed skin in BCC, actinic keratosis and SCC. Concerning immunologic factors, studies have shown that tumor necrosis factor-α (TNF-α) is the critical mast cell product involved in ultraviolet-induced immunosuppression: mast cells contain high quantities of TNF-α which is released after activation; the level of TNF-α is increased in the skin exposed to UV radiation disrupting the morphology and function of Langerhans cells, the principal antigen-presenting cells of the skin. An animal study suggests that the degree of susceptibility to ultraviolet-B-induced local immunosuppression depends on TNF-α level within the epidermis after UVB. It has been established that mast cell-derived histamine stimulates prostaglandin E2 (PGE2) production from keratinocytes. PGE2 alters the cytokine balance in favor of the immunosuppressive interleukin-10 (IL-10) against the immunostimulatory IL-12; histamine also increases suppressor T-cell function by binding to the H2 receptors, which in turn release higher levels of immune suppressive cytokines including IL-10 and induce apoptosis of antigen-presenting cells. All this results in a shift of the immune response from T helper 1 (Th1) cytokine profile to T helper 2 (Th2) cytokine profile, inhibiting antigen-presenting cells to induce antitumor activity.
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12
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DARC (Duffy) and BCAM (Lutheran) reduced expression in thyroid cancer. Blood Cells Mol Dis 2013; 50:161-5. [DOI: 10.1016/j.bcmd.2012.10.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 10/28/2012] [Accepted: 10/29/2012] [Indexed: 11/17/2022]
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13
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Abstract
The Lutheran (Lu) and Lu(v13) blood group glycoproteins function as receptors for extracellular matrix laminins. Lu and Lu(v13) are linked to the erythrocyte cytoskeleton through a direct interaction with spectrin. However, neither the molecular basis of the interaction nor its functional consequences have previously been delineated. In the present study, we defined the binding motifs of Lu and Lu(v13) on spectrin and identified a functional role for this interaction. We found that the cytoplasmic domains of both Lu and Lu(v13) bound to repeat 4 of the alpha spectrin chain. The interaction of full-length spectrin dimer to Lu and Lu(v13) was inhibited by repeat 4 of alpha-spectrin. Further, resealing of this repeat peptide into erythrocytes led to weakened Lu-cytoskeleton interaction as demonstrated by increased detergent extractability of Lu. Importantly, disruption of the Lu-spectrin linkage was accompanied by enhanced cell adhesion to laminin. We conclude that the interaction of the Lu cytoplasmic tail with the cytoskeleton regulates its adhesive receptor function.
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14
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Willberg J, Hormia M, Takkunen M, Kikkawa Y, Sekiguchi K, Virtanen I. Lutheran blood group antigen as a receptor for alpha5 laminins in gingival epithelia. J Periodontol 2007; 78:1810-8. [PMID: 17760553 DOI: 10.1902/jop.2007.060482] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Lutheran blood group glycoprotein (Lu) is a transmembrane receptor of the immunoglobulin superfamily. Lu serves as a receptor for alpha5 laminins (Lm). The Lm alpha5 chain is a constituent of Lms-511 and -521. Lm-511 is found in most human basement membranes (BMs) and also is detected in BM of gingival epithelia. Recent studies indicated that Lu mediates cell adhesion to Lms-511/521 independently or in concert with integrins. This study focused on the expression of Lu in gingival epithelia and on cultured immortalized gingival keratinocytes. The role of Lu and alpha(3) and beta(1) integrin subunits in the adhesion of oral epithelial cells to Lms-511/521 was also studied. METHODS Immunofluorescence microscopy was used to study the expression of Lu in gingival tissues and in cultured gingival keratinocytes. Immunoprecipitation of radioactively metabolically labeled cells was used to detect Lu. Cell adhesion to Lm-511/521 preparation and to pure Lm-511 was studied in quantitative cell adhesion experiments. Morphological adhesion assays were carried out for visualization of the morphology and adhesion structure formation of the adhering cells. RESULTS Immunofluorescence studies on gingiva showed complete coalignment of Lu on basal epithelial cells with the BM Lm alpha5 chain. A surface-confined, punctate immunoreaction for Lu was detected throughout cell surfaces on cultured gingival cells. Immunoprecipitation showed a broad polypeptide with molecular weight 85,000. In quantitative cell adhesion assays, the adhesion of cells to both Lm alpha5 preparations was diminished with monoclonal antibodies (MAbs) against integrin alpha(3) and even more effectively with MAbs against the beta(1) subunit. When the adhesion sites were blocked with soluble recombinant Lu (sol-Lu), the adhesion of gingival epithelial cells to Lms-511/521 was reduced significantly, and sol-Lu increased the inhibition with integrin alpha(3) antibody. Lm-511 did not induce lamellipodia or focal contacts in cultured gingival keratinocytes. CONCLUSIONS Lu was in coalignment with Lm alpha5 chain in gingival epithelia. Lu also seemed to have a role in gingival epithelial cell adhesion together with integrin alpha(3)beta(1).
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Affiliation(s)
- Jaana Willberg
- Department of Oral Pathology and Radiology, Institute of Dentistry, University of Turku, Turku, Finland.
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15
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Kikkawa Y, Sasaki T, Nguyen MT, Nomizu M, Mitaka T, Miner JH. The LG1-3 tandem of laminin alpha5 harbors the binding sites of Lutheran/basal cell adhesion molecule and alpha3beta1/alpha6beta1 integrins. J Biol Chem 2007; 282:14853-60. [PMID: 17383963 DOI: 10.1074/jbc.m611706200] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The laminin-type globular (LG) domains of laminin alpha chains have been implicated in various cellular interactions that are mediated through receptors such as integrins, alpha-dystroglycan, syndecans, and the Lutheran blood group glycoprotein (Lu). Lu, an Ig superfamily transmembrane receptor specific for laminin alpha5, is also known as basal cell adhesion molecule (B-CAM). Although Lu/B-CAM binds to the LG domain of laminin alpha5, the binding site has not been precisely defined. To better delineate this binding site, we produced a series of recombinant laminin trimers containing modified alpha chains, such that all or part of alpha5LG was replaced with analogous segments of human laminin alpha1LG. In solid phase binding assays using a soluble Lu (Lu-Fc) composed of the Lu extracellular domain and human IgG1 Fc, we found that Lu bound to Mr5G3, a recombinant laminin containing alpha5 domains LN through LG3 fused to human laminin alpha1LG4-5. However, Lu/B-CAM did not bind other recombinant laminins containing alpha5LG3 unless alpha5LG1-2 was also present. A recombinant alpha5LG1-3 tandem lacking the laminin coiled coil (LCC) domain did not reproduce the activity of Lu/B-CAM binding. Therefore, proper structure of the alpha5LG1-3 tandem with the LCC domain was essential for the binding of Lu/B-CAM to laminin alpha5. Our results also suggest that the binding site for Lu/B-CAM on laminin alpha5 may overlap with that of integrins alpha3beta1 and alpha6beta1.
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Affiliation(s)
- Yamato Kikkawa
- Renal Division, Department of Internal Medicine, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
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16
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Huber MA, Kraut N, Schweifer N, Dolznig H, Peter RU, Schubert RD, Scharffetter-Kochanek K, Pehamberger H, Garin-Chesa P. Expression of stromal cell markers in distinct compartments of human skin cancers. J Cutan Pathol 2006; 33:145-55. [PMID: 16420310 DOI: 10.1111/j.0303-6987.2006.00446.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND The importance of changes in the supporting tumor stroma for cancer initiation and progression is well established. The characteristics of an activated tumor stroma, however, are not completely understood. In an effort to better characterize the desmoplastic response to human skin tumors, we evaluated the expression pattern of three stromal cell markers, fibroblast-activation protein (FAP), endoglyx-1, and endosialin, in a series of melanocytic and epithelial skin tumors. METHODS Immunohistochemistry using antibodies against FAP, endoglyx-1, and endosialin was carried out in skin samples obtained from 43 patients. Furthermore, microarray data from an independent set of human skin cancers were analyzed. RESULTS FAP-positive fibroblasts were detected in all tumor tissues tested, including cases of melanocytic nevi, melanoma metastases, basal cell carcinomas, and squamous cell carcinomas. In cutaneous melanoma metastases, we identified different compartments within the stromal response on the basis of the regions of FAP expression. Endoglyx-1 expression was confined to normal and tumor blood vessel endothelium including 'hot spots' of neoangiogenesis within the cutaneous melanoma metastases. Endosialin was selectively induced in subsets of small- and medium-sized tumor blood vessels in melanoma metastases and squamous cell carcinomas. CONCLUSIONS These data describe novel aspects of stromal marker expression in distinct compartments of human skin tumors and may point to potential targets for novel therapeutic strategies aimed at the tumor stroma.
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Affiliation(s)
- Margit A Huber
- Department of Dermatology, Vienna Medical University, Vienna, Austria.
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17
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Abstract
During the second half of the 20th century, blood bankers quickly expanded our knowledge of human erythrocyte blood group antigens. By the dawn of the 21st century, several hundred blood group antigen polymorphisms had been identified. Hot on the heels of the serologists, membrane biochemists and molecular geneticists defined both the biochemical and genetic bases of most of these antigens. Perhaps to their surprise, this work has led to the discovery of functionally diverse and important membrane proteins expressed on the surface of red cells, including numerous adhesion molecules. Red cells express an unexpected number of such adhesion receptors, some of which contribute to human disease, as well as to normal red cell development. And perhaps most interestingly, study of these molecules has elucidated ways in which even mature red cells respond to external stimuli, such as adrenergic hormones.
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Affiliation(s)
- Marilyn J Telen
- Duke University Medical Canter, Duke-UNC Comprehensive Sickle Cell Center, Durham, NC 27710, USA.
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18
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Tilli CMLJ, Van Steensel MAM, Krekels GAM, Neumann HAM, Ramaekers FCS. Molecular aetiology and pathogenesis of basal cell carcinoma. Br J Dermatol 2005; 152:1108-24. [PMID: 15948971 DOI: 10.1111/j.1365-2133.2005.06587.x] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Recent insights into the cell biology of the epidermis and its appendages are transforming our understanding of the pathogenesis of basal cell carcinoma (BCC). The significant progress that has been made warrants a comprehensive review of the molecular and cellular pathology of BCC. The items addressed include environmental and genetic risk factors, the biology of the putative precursor cell(s), and the contribution of aberrations in processes such as apoptosis, cell proliferation, differentiation and signalling to carcinogenesis. Furthermore, established and novel treatment modalities are discussed with particular attention to future biological approaches.
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Affiliation(s)
- C M L J Tilli
- Research Institute of Growth & Development, Department of Dermatology, University of Masstricht, The Netherlands
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19
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Abstract
The Lutheran blood group glycoprotein (Lu), also known as basal cell adhesion molecule (B-CAM), is a transmembrane receptor with five immunoglobulin-like domains in its extracellular region; it is therefore classified as a member of the immunoglobulin (Ig) gene family. Lu/B-CAM is observed not only on red blood cells, but also on a subset of muscle and epithelial cells in various tissues. Recently, several groups have reported that Lu/B-CAM is a novel receptor for laminin a5. The laminin a5 chain is a component of the laminin-511 (alpha 5 beta 1 gamma 1), -521 (alpha 5 beta 2 gamma 1), and -523 (alpha 5 beta 2 gamma 3) heterotrimers and is expressed throughout the mammalian body. We also have shown that Lu/B-CAM is co-localized with laminin alpha 5 in various tissues. Although the biological role of Lu/B-CAM remains unclear, the specific binding of Lu/B-CAM to laminin alpha 5 suggests that it plays an important role in developmental and physiological processes. It also is necessary to investigate further the interaction between Lu/B-CAM and laminin a5 in pathological processes, including sickle cell disease and cancer.
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Affiliation(s)
- Yamato Kikkawa
- Department of Pathophysiology, Cancer Research Institute, Sapparo Medical University, School of Medicine, Sapparo, Japan.
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Schön M, Schön MP. Expression of basal-cell adhesion molecule (B-CAM) is associated with immature states of human keratinocytes. J Invest Dermatol 2001; 117:995-7. [PMID: 11676846 DOI: 10.1046/j.0022-202x.2001.01506.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Boehncke WH. Expression of Basal-Cell Adhesion Molecule (B-CAM) in Human Epidermis. J Invest Dermatol 2001. [DOI: 10.1046/j.0022-202x.2001.01486.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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