1
|
Shi R, Zhao W, Zhu L, Wang R, Wang D. Identification of basement membrane markers in diabetic kidney disease and immune infiltration by using bioinformatics analysis and experimental verification. IET Syst Biol 2023; 17:316-326. [PMID: 37776100 PMCID: PMC10725710 DOI: 10.1049/syb2.12078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 10/01/2023] Open
Abstract
Diabetic kidney disease (DKD) is the leading cause of chronic kidney disease worldwide. Basement membranes (BMs) are ubiquitous extracellular matrices which are affected in many diseases including DKD. Here, the authors aimed to identify BM-related markers in DKD and explored the immune cell infiltration in this process. The expression profiles of three datasets were downloaded from the Gene Expression Omnibus database. BM-related differentially expression genes (DEGs) were identified and Kyoto encyclopaedia of genes and genomes pathway enrichment analysis were applied to biological functions. Immune cell infiltration and immune function in the kidneys of patients with DKD and healthy controls were evaluated and compared using the ssGSEA algorithm. The association of hub genes and immune cells and immune function were explored. A total of 30 BM-related DEGs were identified. The functional analysis showed that BM-related DEGs were notably associated with basement membrane alterations. Crucially, BM-related hub genes in DKD were finally identified, which were able to distinguish patients with DKD from controls. Moreover, the authors observed that laminin subunit gamma 1(LAMC1) expression was significantly high in HK2 cells treated with high glucose. Immunohistochemistry results showed that, compared with those in db/m mouse kidneys, the levels of LAMC1 in db/db mouse kidneys were significantly increased. The biomarkers genes may prove crucial for DKD treatment as they could be targeted in future DKD treatment protocols.
Collapse
Affiliation(s)
- Rui Shi
- Department of NephrologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| | - Wen‐Man Zhao
- Department of NephrologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| | - Li Zhu
- Department of NephrologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| | - Rui‐Feng Wang
- Department of NephrologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| | - De‐Guang Wang
- Department of NephrologyThe Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina
| |
Collapse
|
2
|
Long J, Qin Z, Chen G, Song B, Zhang Z. Decellularized extracellular matrix (d-ECM): the key role of the inflammatory process in pre-regeneration after implantation. Biomater Sci 2023; 11:1215-1235. [PMID: 36625281 DOI: 10.1039/d2bm01204a] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Clinical medicine is encountering the challenge of repairing soft-tissue defects. Currently, natural and synthetic materials have been developed as natural scaffolds. Among them, the decellularized extracellular matrix (d-ECM) can achieve tissue remodeling following injury and, thus, replace defects due to its advantages of the extensiveness of the source and excellent biological and mechanical properties. However, by analyzing the existing decellularization techniques, we found that different preparation methods directly affect the residual components of the d-ECM, and further have different effects on inflammation and regeneration of soft tissues. Therefore, we analyzed the role of different residual components of the d-ECM after decellularization. Then, we explored the inflammatory process and immune cells in an attempt to understand the mechanisms and causes of tissue degeneration and regeneration after transplantation. In this paper, we summarize the current studies related to updated protocols for the preparation of the d-ECM, biogenic and exogenous residual substances, inflammation, and immune cells influencing the fate of the d-ECM.
Collapse
Affiliation(s)
- Jie Long
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Zijin Qin
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Guo Chen
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Baoqiang Song
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| | - Ziang Zhang
- Department of Plastic and Reconstructive Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, China.
| |
Collapse
|
3
|
Capella-Monsonís H, Tilbury MA, Wall JG, Zeugolis DI. Porcine mesothelium matrix as a biomaterial for wound healing applications. Mater Today Bio 2020; 7:100057. [PMID: 32577613 PMCID: PMC7305392 DOI: 10.1016/j.mtbio.2020.100057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 05/07/2020] [Accepted: 05/08/2020] [Indexed: 12/12/2022] Open
Abstract
The increasing economic burden of wound healing in healthcare systems requires the development of functional therapies. Xenografts with preserved extracellular matrix (ECM) structure and biofunctional components overcome major limitations of autografts and allografts (e.g. availability) and artificial biomaterials (e.g. foreign body response). Although porcine mesothelium is extensively used in clinical practice, it is under-investigated for wound healing applications. Herein, we compared the biochemical and biological properties of the only two commercially available porcine mesothelium grafts (Meso Biomatrix® and Puracol® Ultra ECM) to traditionally used wound healing grafts (Endoform™, ovine forestomach and MatriStem®, porcine urinary bladder) and biomaterials (Promogran™, collagen/oxidized regenerated cellulose). The Endoform™ and the Puracol® Ultra ECM showed the highest (p<0.05) soluble collagen and elastin content. The MatriStem® had the highest (p<0.05) basic fibroblast growth factor (FGFb) content, whereas the Meso Biomatrix® had the highest (p<0.05) transforming growth factor beta-1 (TGF-β1) and vascular endothelial growth factor (VEGF) content. All materials showed tissue-specific structure and composition. The Endoform™ and the Meso Biomatrix® had some nuclei residual matter. All tissue grafts showed similar (p>0.05) response to enzymatic degradation, whereas the Promogran™ was not completely degraded by matrix metalloproteinase (MMP)-8 and was completely degraded by elastase. The Promogran™ showed the highest (p<0.05) permeability to bacterial infiltration. The Promogran™ showed by far the lowest dermal fibroblast and THP-1 attachment and growth. All tested materials showed significantly lower (p<0.05) tumor necrosis factor-alpha (TNF-α) expression than the lipopolysaccharides group. The MatriStem® and the Puracol® Ultra ECM promoted the highest (p<0.05) number of micro-vessel formation, whereas the Promogran™ the lowest (p<0.05). Collectively, these data confer that porcine mesothelium has the potential to be used as a wound healing material, considering its composition, resistance to enzymatic degradation, cytocompatibility, and angiogenic potential.
Collapse
Key Words
- Angiogenesis
- CORC-PG, collagen/oxidized regenerated cellulose—Promogran™
- Collagen devices
- DMEM, Dulbecco's modified eagle medium
- ECM, extracellular matrix
- Functional biomaterials
- HUVECs, human umbilical vein endothelial cells
- Immune response
- LB, lysogenic broth
- LPS, lipopolysaccharides
- OF-EF, ovine forestomach—Endoform™
- P/S, penicillin/streptomycin
- PBS, phosphate-buffered saline
- PFA, paraformaldehyde
- PM-MB, porcine mesothelium—Meso Biomatrix®
- PM-PC, porcine mesothelium—Puracol® Ultra ECM
- PUB-MS, porcine urinary bladder—MatriStem®
- SDS-PAGE, sodium dodecyl sulphate–polyacrylamide gel electrophoresis
- Xenografts
Collapse
Affiliation(s)
- H Capella-Monsonís
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), National University of Ireland Galway (NUI Galway), Galway, Ireland.,Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - M A Tilbury
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway (NUI Galway), Galway, Ireland.,Department of Microbiology, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - J G Wall
- Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway (NUI Galway), Galway, Ireland.,Department of Microbiology, National University of Ireland Galway (NUI Galway), Galway, Ireland
| | - D I Zeugolis
- Regenerative, Modular & Developmental Engineering Laboratory (REMODEL), National University of Ireland Galway (NUI Galway), Galway, Ireland.,Science Foundation Ireland (SFI) Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway (NUI Galway), Galway, Ireland
| |
Collapse
|
4
|
Higham A, Quinn AM, Cançado JED, Singh D. The pathology of small airways disease in COPD: historical aspects and future directions. Respir Res 2019; 20:49. [PMID: 30832670 PMCID: PMC6399904 DOI: 10.1186/s12931-019-1017-y] [Citation(s) in RCA: 126] [Impact Index Per Article: 25.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 02/25/2019] [Indexed: 12/16/2022] Open
Abstract
Small airways disease (SAD) is a cardinal feature of chronic obstructive pulmonary disease (COPD) first recognized in the nineteenth century. The diverse histopathological features associated with SAD underpin the heterogeneous nature of COPD. Our understanding of the key molecular mechanisms which drive the pathological changes are not complete. In this article we will provide a historical overview of key histopathological studies which have helped shape our understanding of SAD and discuss the hallmark features of airway remodelling, mucous plugging and inflammation. We focus on the relationship between SAD and emphysema, SAD in the early stages of COPD, and the mechanisms which cause SAD progression, including bacterial colonization and exacerbations. We discuss the need to specifically target SAD to attenuate the progression of COPD.
Collapse
Affiliation(s)
- Andrew Higham
- The University of Manchester Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.
| | - Anne Marie Quinn
- Department of Histopathology, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | | | - Dave Singh
- The University of Manchester Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, Wythenshawe Hospital, Manchester University NHS Foundation Trust, Manchester, UK.,Medicines Evaluation Unit, The Langley Building, Southmoor Road, Manchester, UK
| |
Collapse
|
5
|
Kane BA, An H, Rajasekariah P, McNeil HP, Bryant K, Tedla N. Differential expression and regulation of the non-integrin 37/67-kDa laminin receptor on peripheral blood leukocytes of healthy individuals and patients with rheumatoid arthritis. Sci Rep 2019; 9:1149. [PMID: 30718719 PMCID: PMC6362087 DOI: 10.1038/s41598-018-37907-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 12/06/2018] [Indexed: 01/10/2023] Open
Abstract
The non-integrin 37/67-kDa laminin receptor (LAMR1) is a complex protein with diverse functions. LAMR1 is widely expressed in epithelial cells and recently it was reported on neutrophils and a subset of activated T cells. Ligation of LAMR1 on peripheral blood mononuclear cells (PBMC) downregulated LPS-induced TNFα production, suggesting immune functions. However, its expression on primary monocytes remain unknown. Interestingly, LAMR1 mRNA is downregulated in PBMC of patients with early rheumatoid arthritis (RA), and low gene expression is an independent predictor of poor response to anti-TNFα treatment, suggesting a role in RA pathogenesis. We found LAMR1 was constitutively expressed on all peripheral blood monocytes and a subset of B cells from healthy individuals and patients with RA and it was abundantly present in synovial tissue of patients with RA. On monocytes and synovial tissue lower levels of LAMR1 expression tended to correlate with increased disease activity scores. In vitro treatment of monocytes with IFNγ or IL-10 up-regulated surface LAMR1 in healthy individuals and patients with RA with greater effects observed in healthy individuals. Importantly, treatment with IFNγ significantly increased specific binding of monocytes to laminin-1. TNFα and IL-1β caused marginal downregulation of LAMR1 in patients but effects in controls were variable. Taken together, constitutively expressed LAMR1 on monocytes is differentially regulated by pro-inflammatory and immune-regulatory cytokines suggesting LAMR1 may regulate the threshold and amplitude of their activation and migration. Decreased levels in patients with RA may indicate loss of this potentially critical homeostatic regulation thereby contributing to the excessive inflammation.
Collapse
Affiliation(s)
- Barry A Kane
- Mechanisms of Diseases and Translational Research, School of Medical Sciences, Department of Pathology, University of New South Wales, Sydney, Australia
| | - Hongyan An
- Mechanisms of Diseases and Translational Research, School of Medical Sciences, Department of Pathology, University of New South Wales, Sydney, Australia
| | - Poornima Rajasekariah
- Mechanisms of Diseases and Translational Research, School of Medical Sciences, Department of Pathology, University of New South Wales, Sydney, Australia
| | - H Patrick McNeil
- Faculty of Medicine and Health Sciences, Macquarie University, New South Wales, Australia
| | - Katherine Bryant
- Mechanisms of Diseases and Translational Research, School of Medical Sciences, Department of Pathology, University of New South Wales, Sydney, Australia.,South Western Sydney Clinical School, University of New South Wales, Sydney, Australia
| | - Nicodemus Tedla
- Mechanisms of Diseases and Translational Research, School of Medical Sciences, Department of Pathology, University of New South Wales, Sydney, Australia.
| |
Collapse
|
6
|
Probst K, Stermann J, von Bomhard I, Etich J, Pitzler L, Niehoff A, Bluhm B, Xu HC, Lang PA, Chmielewski M, Abken H, Blissenbach B, Machova A, Papadopoulou N, Brachvogel B. Depletion of Collagen IX Alpha1 Impairs Myeloid Cell Function. Stem Cells 2018; 36:1752-1763. [DOI: 10.1002/stem.2892] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 06/06/2018] [Accepted: 07/02/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Kristina Probst
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| | - Jacek Stermann
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| | - Inga von Bomhard
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| | - Julia Etich
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| | - Lena Pitzler
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| | - Anja Niehoff
- Institute of Biomechanics and Orthopaedics; German Sport University Cologne; Cologne Germany
- Cologne Center for Musculoskeletal Biomechanics (CCMB); University of Cologne; Cologne Germany
| | - Björn Bluhm
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| | - Haifeng C. Xu
- Department of Molecular Medicine II, Medical Faculty; Heinrich Heine University; Düsseldorf Germany
| | - Philipp A. Lang
- Department of Molecular Medicine II, Medical Faculty; Heinrich Heine University; Düsseldorf Germany
| | - Markus Chmielewski
- Center for Molecular Medicine Cologne (CMMC); University of Cologne; Cologne Germany
- Department I Internal Medicine, Medical Faculty; Cologne Germany
- RCI, Chair Gene-Immunotherapy; University Hospital Regensburg; Regensburg Germany
| | - Hinrich Abken
- Center for Molecular Medicine Cologne (CMMC); University of Cologne; Cologne Germany
- Department I Internal Medicine, Medical Faculty; Cologne Germany
- RCI, Chair Gene-Immunotherapy; University Hospital Regensburg; Regensburg Germany
| | - Birgit Blissenbach
- Institute for Medical Microbiology, Immunology and Hygiene, Medical Faculty; University of Cologne; Cologne Germany
| | - Alzbeta Machova
- Institute for Medical Microbiology, Immunology and Hygiene, Medical Faculty; University of Cologne; Cologne Germany
| | - Nikoletta Papadopoulou
- Institute for Medical Microbiology, Immunology and Hygiene, Medical Faculty; University of Cologne; Cologne Germany
| | - Bent Brachvogel
- Department of Pediatrics and Adolescent Medicine, Experimental Neonatology, Medical Faculty; University of Cologne; Cologne Germany
- Center for Biochemistry, Medical Faculty; University of Cologne; Cologne Germany
| |
Collapse
|
7
|
Shirakura K, Ishiba R, Kashio T, Sakai M, Fukushima Y, Yamamoto N, Manabe S, Shigesada N, Tanaka T, Hino N, Aird WC, Doi T, Okada Y. Endothelial Robo4 regulates IL-6 production by endothelial cells and monocytes via a crosstalk mechanism in inflammation. Biochem Biophys Res Commun 2018; 495:801-806. [DOI: 10.1016/j.bbrc.2017.11.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 11/09/2017] [Indexed: 01/19/2023]
|
8
|
Simon T, Bromberg JS. Regulation of the Immune System by Laminins. Trends Immunol 2017; 38:858-871. [PMID: 28684207 DOI: 10.1016/j.it.2017.06.002] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 01/11/2023]
Abstract
Laminins are trimeric proteins that are major components of the basement membranes that separate endothelia and epithelia from the underlying tissue. Sixteen laminin isoforms have been described, each with distinct tissue expression patterns and functions. While laminins have a critical structural role, recent evidence also indicates that they also impact the migration and functions of immune cells. Laminins are differentially expressed upon immunity or tolerance and orientate the immune response. This review will summarize the structure of laminins, the modulation of their expression, and their interactions with the immune system. Finally, the role of the laminins in autoimmune diseases and transplantation will be discussed.
Collapse
Affiliation(s)
- Thomas Simon
- Departments of Surgery and Microbiology and Immunology, Center for Vascular and Inflammatory Disease, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Jonathan S Bromberg
- Departments of Surgery and Microbiology and Immunology, Center for Vascular and Inflammatory Disease, University of Maryland School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
9
|
Montuori N, Pesapane A, Giudice V, Serio B, Rossi FW, De Paulis A, Selleri C. 67 kDa laminin receptor (67LR) in normal and neoplastic hematopoietic cells: is its targeting a feasible approach? Transl Med UniSa 2016; 15:8-14. [PMID: 27896222 PMCID: PMC5120745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
The 67 kDa laminin receptor (67LR) is a non-integrin cell surface receptor for laminin (LM) that derives from a 37 kDa precursor (37LRP). 67LR expression is increased in neoplastic cells and correlates with an enhanced invasive and metastatic potentialin many human solid tumors, recommending this receptor as a new promising target for cancer therapy. This is supported by in vivo studies showing that 67LR downregulation reduces tumour cell proliferation and tumour formation by inducing apoptosis. 67LR association with the anti-apoptotic protein PED/PEA-15 activates a signal transduction pathway, leading to cell proliferation and resistance to apoptosis. However, the main function of 67LR is to enhance tumor cell adhesion to the LM of basement membranes and cell migration, two crucial events in the metastasis cascade. Thus, inhibition of 67LR binding to LM has been proved to be a feasible approach to block metastatic cancer cell spread. Despite accumulating evidences on 67LR overexpression in hematologic malignancies, 67LR role in these diseases has not been clearly defined. Here, we review 67LR expression and function in normal and malignant hematopoietic cells, 67LR role and prognostic impact in hematological malignancies and first attempts in targeting its activity.
Collapse
Affiliation(s)
- Nunzia Montuori
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy,()
| | - Ada Pesapane
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Valentina Giudice
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Bianca Serio
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| | - Francesca W Rossi
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Amato De Paulis
- Department of Translational Medical Sciences, University of Naples Federico II, Naples, Italy
| | - Carmine Selleri
- Department of Medicine and Surgery, University of Salerno, Salerno, Italy
| |
Collapse
|
10
|
Waghray M, Yalamanchili M, Dziubinski M, Zeinali M, Erkkinen M, Yang H, Schradle KA, Urs S, Pasca Di Magliano M, Welling TH, Palmbos PL, Abel EV, Sahai V, Nagrath S, Wang L, Simeone DM. GM-CSF Mediates Mesenchymal-Epithelial Cross-talk in Pancreatic Cancer. Cancer Discov 2016; 6:886-99. [PMID: 27184426 DOI: 10.1158/2159-8290.cd-15-0947] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 05/13/2016] [Indexed: 11/16/2022]
Abstract
UNLABELLED Pancreatic ductal adenocarcinoma (PDA) is characterized by a dense stroma consisting of a prevalence of activated fibroblasts whose functional contributions to pancreatic tumorigenesis remain incompletely understood. In this study, we provide the first identification and characterization of mesenchymal stem cells (MSC) within the human PDA microenvironment, highlighting the heterogeneity of the fibroblast population. Primary patient PDA samples and low-passage human pancreatic cancer-associated fibroblast cultures were found to contain a unique population of cancer-associated MSCs (CA-MSC). CA-MSCs markedly enhanced the growth, invasion, and metastatic potential of PDA cancer cells. CA-MSCs secreted the cytokine GM-CSF that was required for tumor cell proliferation, invasion, and transendothelial migration. Depletion of GM-CSF in CA-MSCs inhibited the ability of these cells to promote tumor cell growth and metastasis. Together, these data identify a population of MSCs within the tumor microenvironment that possesses a unique ability, through GM-CSF signaling, to promote PDA survival and metastasis. SIGNIFICANCE The role of stroma in pancreatic cancer is controversial. Here, we provide the first characterization of MSCs within the human PDA microenvironment and demonstrate that CA-MSCs promote tumorigenesis through the production of GM-CSF. These data identify a novel cytokine pathway that mediates mesenchymal-epithelial cross-talk and is amenable to therapeutic intervention. Cancer Discov; 6(8); 886-99. ©2016 AACR.This article is highlighted in the In This Issue feature, p. 803.
Collapse
Affiliation(s)
- Meghna Waghray
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Malica Yalamanchili
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Michele Dziubinski
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Mina Zeinali
- Translational Oncology Program, University of Michigan, Ann Arbor, Michigan. Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Marguerite Erkkinen
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Huibin Yang
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Kara A Schradle
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan
| | - Sumithra Urs
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Marina Pasca Di Magliano
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan
| | - Theodore H Welling
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Phillip L Palmbos
- Translational Oncology Program, University of Michigan, Ann Arbor, Michigan. Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Ethan V Abel
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Vaibhav Sahai
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan. Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
| | - Sunitha Nagrath
- Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan. Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan
| | - Lidong Wang
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan
| | - Diane M Simeone
- Department of Surgery, University of Michigan, Ann Arbor, Michigan. Pancreatic Cancer Center, University of Michigan, Ann Arbor, Michigan. Translational Oncology Program, University of Michigan, Ann Arbor, Michigan. Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan.
| |
Collapse
|
11
|
DiGiacomo V, Meruelo D. Looking into laminin receptor: critical discussion regarding the non-integrin 37/67-kDa laminin receptor/RPSA protein. Biol Rev Camb Philos Soc 2015; 91:288-310. [PMID: 25630983 DOI: 10.1111/brv.12170] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/04/2014] [Accepted: 12/08/2014] [Indexed: 02/06/2023]
Abstract
The 37/67-kDa laminin receptor (LAMR/RPSA) was originally identified as a 67-kDa binding protein for laminin, an extracellular matrix glycoprotein that provides cellular adhesion to the basement membrane. LAMR has evolutionary origins, however, as a 37-kDa RPS2 family ribosomal component. Expressed in all domains of life, RPS2 proteins have been shown to have remarkably diverse physiological roles that vary across species. Contributing to laminin binding, ribosome biogenesis, cytoskeletal organization, and nuclear functions, this protein governs critical cellular processes including growth, survival, migration, protein synthesis, development, and differentiation. Unsurprisingly given its purview, LAMR has been associated with metastatic cancer, neurodegenerative disease and developmental abnormalities. Functioning in a receptor capacity, this protein also confers susceptibility to bacterial and viral infection. LAMR is clearly a molecule of consequence in human disease, directly mediating pathological events that make it a prime target for therapeutic interventions. Despite decades of research, there are still a large number of open questions regarding the cellular biology of LAMR, the nature of its ability to bind laminin, the function of its intrinsically disordered C-terminal region and its conversion from 37 to 67 kDa. This review attempts to convey an in-depth description of the complexity surrounding this multifaceted protein across functional, structural and pathological aspects.
Collapse
Affiliation(s)
- Vincent DiGiacomo
- Department of Pathology, New York University School of Medicine, 180 Varick Street, New York, NY 10014, U.S.A
| | - Daniel Meruelo
- Department of Pathology, New York University School of Medicine, 180 Varick Street, New York, NY 10014, U.S.A.,NYU Cancer Institute, 550 First Avenue, New York, NY 10016, U.S.A.,NYU Gene Therapy Center, 550 First Avenue, New York, NY 10016, U.S.A
| |
Collapse
|
12
|
Tachibana H. Green tea polyphenol sensing. PROCEEDINGS OF THE JAPAN ACADEMY. SERIES B, PHYSICAL AND BIOLOGICAL SCIENCES 2011; 87:66-80. [PMID: 21422740 PMCID: PMC3066547 DOI: 10.2183/pjab.87.66] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Accepted: 04/12/2010] [Indexed: 05/24/2023]
Abstract
Green tea polyphenols have emerged over the past two decades as an important dietary factor for health promotion. There is considerable evidence that tea polyphenols, in particular (-)-epigallocatechin-3-gallate (EGCG) inhibit carcinogenesis. However, the mechanisms for the cancer-preventive activity of EGCG are not completely characterized and many features remain to be elucidated. Recently we have identified a cell-surface EGCG receptor and the relating molecules that confer EGCG responsiveness to many cancer cells at physiological concentrations. Here, we review some of the reported mechanisms for the cancer chemopreventive action of EGCG and provide an overview of several molecules that sense and manage the physiological functions of EGCG.
Collapse
Affiliation(s)
- Hirofumi Tachibana
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan.
| |
Collapse
|
13
|
Ando K, Miyazaki Y, Sawayama Y, Tominaga S, Matsuo E, Yamasaki R, Inoue Y, Iwanaga M, Imanishi D, Tsushima H, Fukushima T, Imaizumi Y, Taguchi J, Yoshida S, Hata T, Tomonaga M. High expression of 67-kDa laminin receptor relates to the proliferation of leukemia cells and increases expression of GM-CSF receptor. Exp Hematol 2010; 39:179-186.e4. [PMID: 21056082 DOI: 10.1016/j.exphem.2010.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Revised: 08/09/2010] [Accepted: 11/02/2010] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The 67-kDa laminin receptor (LR) is a nonintegrin receptor for laminin, a major component of the extracellular matrix. To elucidate the role of LR in leukemia cells, we studied the relationship between the phenotype of leukemia cells and LR expression. MATERIALS AND METHODS The relationship between clinical features of acute myeloid leukemia and expression of LR was examined. LR was overexpressed or suppressed by the introduction of complementary DNA or small interfering RNA for LR in a human leukemia cell line to test the effect of LR on the phenotype of leukemia. Expression of granulocyte-macrophage colony-stimulating factor receptors (GM-CSFR) was also tested in leukemia cells, including clinical samples. RESULTS Expression of LR was significantly related to elevation of white blood cell count, lactate dehydrogenase, and survival among acute myeloid leukemia patients. Forced expression of LR enhanced proliferation, cell-cycle progression, and antiapoptosis of leukemia cells associated with phosphorylation of a transcription factor, signal transducer and activator of transcription 5, in the absence of stimulation by laminin. On the other hand, suppression of LR expression had the opposite effects. The number of GM-CSFR increased in leukemia cells overexpressing LR, and there was a significant relationship between the expression of LR and GM-CSFR in acute myeloid leukemia samples. CONCLUSIONS These results suggest that LR expression influenced the characteristics of leukemia cells toward an aggressive phenotype and increased the number of GM-CSFR. These changes might be partly related to enhanced GM-CSF signaling.
Collapse
Affiliation(s)
- Koji Ando
- Hematology and Molecular Medicine Unit, Atomic Bomb Disease Institute, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
FAAP is Involved in Cell Attachment*. PROG BIOCHEM BIOPHYS 2009. [DOI: 10.3724/sp.j.1206.2008.00344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
15
|
Abstract
Src signaling has been implicated in several malignancies including melanoma. The prevalence of Src activation in human melanoma and the effect of the newer Src inhibitors, dasatinib, and bosutinib (SKI-606), as single agents or in combination, on melanoma cell lines is not well established. In the melanoma cell lines, A-375, SK-Mel-5, and SK-Mel-28, activity of Src inhibitors was assessed alone or in combination with standard chemotherapy agents; 50% growth inhibitory concentration was determined by MTS assay and immunoblotting was used to measure Src activation and downstream signaling. Staining for Src activation was measured by Src-phosphotyrosine 416. Immunohistochemistry was performed on primary cutaneous, mucosal, and metastatic melanoma. Src inhibitors blocked the growth of melanoma cell lines; furthermore, Src inhibitor treatment was synergized with cisplatin but not temozolomide or paclitaxel. Treatment with dasatanib increased the levels of pS473 Akt in A-375 melanoma cells but not in the other two cell lines. Forty-eight percent (17 of 35) of all melanoma stained weakly, moderately, or strongly for pY416 Src: cutaneous 61% (eight of 13), mucosal 31% (four of 13), metastatic 55% (five of nine). Most positive biopsies stained weakly and only one metastatic melanoma specimen stained strongly for Src-phosphotyrosine 416. pY416 Src is expressed in cutaneous, mucosal, and metastatic melanoma in various degrees. Src inhibitors may be a promising therapy in melanoma, either by themselves or in combination with chemotherapy (especially with platinum compounds) or inhibitors of the Akt/PI3k pathway.
Collapse
|
16
|
Miragliotta V, Lussier JG, Theoret CL. Laminin receptor 1 is differentially expressed in thoracic and limb wounds in the horse. Vet Dermatol 2009; 20:27-34. [DOI: 10.1111/j.1365-3164.2008.00718.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
17
|
Postiglione L, Montagnani S, Ladogana P, Castaldo C, Di Spigna G, Bruno EM, Turano M, De Santo L, Cudemo G, Cocozza S, de Divitiis O, Rossi G. Granulocyte Macrophage-Colony Stimulating Factor receptor expression on human cardiomyocytes from end-stage heart failure patients. Eur J Heart Fail 2006; 8:564-70. [PMID: 16480924 DOI: 10.1016/j.ejheart.2005.12.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2005] [Revised: 07/20/2005] [Accepted: 12/07/2005] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND In remodelling ventricles, the progression of heart failure is associated with structural changes involving the extra-cellular matrix (ECM) and the cytoskeleton of cardiomyocytes, associated with fibrosis, cellular damage and death. The role of some cytokines and haematopoietic growth factors in the mechanism of both damage and regeneration of cardiac tissue during acute myocardial infarction has been demonstrated. Following heart damage, the development of scarred tissue was considered to be the only outcome, since myocytes were considered to be terminally differentiated cells. However, recent studies in animal models and adult human hearts have shown that myocytes can proliferate under the modulation of several factors. AIMS To assess Granulocyte Macrophage-Colony Stimulating Factor (GM-CSF) receptor expression in healthy and diseased human hearts, and to evaluate the possible role of GM-CSF and its receptor in the regeneration of cardiac tissue in chronic cardiomyopathy. METHODS AND RESULTS GM-CSFR expression in human cardiac tissue from explanted hearts of ten patients with end-stage heart failure and in cardiac biopsies from eight normal human hearts was studied by immunohistochemistry, and cellular and molecular biology assays. Our results demonstrated an increase in GM-CSFR in cardiomyocytes from end-stage heart failure tissues as compared to normal control tissues. CONCLUSIONS We hypothesize that GM-CSF plays a role in apoptotic and/or ECM deposition processes as well as in cytoskeleton modification in the myocardium.
Collapse
Affiliation(s)
- Loredana Postiglione
- Department of Cellular and Molecular Biology and Pathology "L. Califano", "Federico II" University, Via S. Pansini, 5, Ed. 19, 80131 Naples, Italy
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Selleri C, Ragno P, Ricci P, Visconte V, Scarpato N, Carriero MV, Rotoli B, Rossi G, Montuori N. The metastasis-associated 67-kDa laminin receptor is involved in G-CSF–induced hematopoietic stem cell mobilization. Blood 2006; 108:2476-84. [PMID: 16788104 DOI: 10.1182/blood-2005-11-012625] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractThe 67-kDa laminin receptor (67LR) is a nonintegrin cell-surface receptor with high affinity for laminin, which plays a key role in tumor invasion and metastasis. We investigated the role of 67LR in granulocyte colony-stimulating factor (G-CSF)–induced mobilization of CD34+ hematopoietic stem cells (HSCs) from 35 healthy donors. G-CSF–mobilized HSCs, including CD34+/CD38– cells, showed increased 67LR expression as compared with unstimulated marrow HSCs; noteworthy, also, is the fact that the level of 67LR expression in G-CSF–mobilized HSCs correlated significantly with mobilization efficiency. During G-CSF–induced HSC mobilization, the expression of laminin receptors switched from α6 integrins, which mediated laminin-dependent adhesion of steady-state human marrow HSCs, to 67LR, responsible for G-CSF–mobilized HSC adhesion and migration toward laminin. In vitro G-CSF treatment, alone or combined with exposure to marrow-derived endothelial cells, induced 67LR up-regulation in marrow HSCs; moreover, anti-67LR antibodies significantly inhibited transendothelial migration of G-CSF–stimulated marrow HSCs. Finally, G-CSF–induced mobilization in mice was associated with 67LR up-regulation both in circulating and marrow CD34+ cells, and anti-67LR antibodies significantly reduced HSC mobilization, providing the first in vivo evidence for 67LR involvement in stem-cell egress from bone marrow after G-CSF administration. In conclusion, 67LR up-regulation in G-CSF–mobilized HSCs correlates with their successful mobilization and reflects its increase in marrow HSCs, which contributes to the egress from bone marrow by mediating laminin-dependent cell adhesion and transendothelial migration.
Collapse
Affiliation(s)
- Carmine Selleri
- Department of Biochemistry and Medical Biotechnology, Institute of Experimental Endocrinology and Oncology (IEOS), National Research Council (CNR), Via S Pansini 5, 80131, Naples, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Chen J, Cárcamo JM, Golde DW. The alpha subunit of the granulocyte-macrophage colony-stimulating factor receptor interacts with c-Kit and inhibits c-Kit signaling. J Biol Chem 2006; 281:22421-22426. [PMID: 16760463 DOI: 10.1074/jbc.m604644200] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The cytokine granulocyte-macrophage colony-stimulating factor (GM-CSF) regulates hematopoiesis and the function of mature host defense cells through the GM-CSF receptor (GMR), which is composed of alpha (alphaGMR) and beta (betaGMR) subunits. Stem cell factor is another important hematopoietic cytokine that signals through c-Kit, a receptor tyrosine kinase, and regulates hematopoietic stem cell maintenance and erythroid development. Like other cytokine receptors, GMR and c-Kit are generally deemed as independent adaptor molecules capable of transducing cytokine-specific signals. We found that the alphaGMR directly interacts with c-Kit and that the interaction is mediated by the cytoplasmic domains. Furthermore, alphaGMR inhibited c-Kit auto-phosphorylation induced by the ligand stem cell factor. Consistent with the inhibitory effect, the expression of alphaGMR was suppressed in cells whose viability was dependent on c-Kit signaling. In contrast, the alternatively spliced alpha2 isoform of the alphaGMR could not inhibit c-Kit signaling, providing a rationale for the existence of the alpha2 isoform. Our results suggest that in addition to having the commonly appreciated roles in cytokine signal transduction, the receptors alphaGMR and c-Kit could interact to coordinate their signal initiation.
Collapse
Affiliation(s)
- Jian Chen
- Department of Pharmacology, Weill Graduate School of Medical Sciences of Cornell University, New York, New York 10021; Program in Molecular Pharmacology and Chemistry, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.
| | - Juan M Cárcamo
- Program in Molecular Pharmacology and Chemistry, Memorial Sloan-Kettering Cancer Center, New York, New York 10021.
| | - David W Golde
- Department of Pharmacology, Weill Graduate School of Medical Sciences of Cornell University, New York, New York 10021; Program in Molecular Pharmacology and Chemistry, Memorial Sloan-Kettering Cancer Center, New York, New York 10021
| |
Collapse
|
20
|
Wang T, Zhang W, Pei Z, Block M, Wilson B, Reece JM, Miller DS, Hong JS. Reactive microgliosis participates in MPP+-induced dopaminergic neurodegeneration: role of 67 kDa laminin receptor. FASEB J 2006; 20:906-15. [PMID: 16675848 DOI: 10.1096/fj.05-5053com] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
It has been reported that extracellular matrix (ECM) molecules regulate monocyte activation by binding with a 67 kDa nonintegrin laminin receptor (LR). As microgliosis is a pivotal factor in propelling the progress of chronic neurodegeneration in the brain, we hypothesized that LR may regulate the microgliosis and subsequent neurotoxicity. Using 1-methyl-4-phenylpyridinium (MPP+) -treated C57 mice primary mesencephalic neuron-glia cultures as an in vitro Parkinson's disease (PD) model, we observed that MPP+ treatment increased LR expression only in the mixed neuron-glia but not in microglia-enriched or microglia-depleted cultures, indicating that MPP+-induced increase of LR expression is associated with neuron-microglia interaction. Using confocal microscopic examination, we found that LR was localized in the microglia, which were F4/80 positive. Treatment with the antibody (Ab) against LR (LR-Ab) or YIGSR, a synthetic pentapeptide inhibitor for LR, significantly attenuated the MPP+-increased F4/80 immunoreactivity (24 h) and dopaminergic (DA) neurotoxicity. LR-Ab also attenuated MPP+-increased microglial phagocytotic activity (48 h) and the superoxide production (4 days). Further study demonstrated that exogenous laminin (1-10 microg/ml) treatment induced microglial activation and DA neurotoxicity, in a dose-dependent manner, which was partially attenuated by the LR-Ab. We concluded that by regulating cell-ECM interaction, LR plays important roles in mediating microgliosis and subsequent DA neurotoxicity. Laminin is a potential ligand for activating this LR receptor. This study also suggests that laminin/LR is a potential target for developing new therapeutic drugs against neurodegenerative disorders such as PD.
Collapse
Affiliation(s)
- Tongguang Wang
- Neuropharmacology Section, Laboratory of Pharmacology and Chemistry, National Institute of Environmental Health Sciences/National Institutes of Health, Research Triangle Park,North Carolina, USA.
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Bonig H, Chang KH, Nakamoto B, Papayannopoulou T. The p67 laminin receptor identifies human erythroid progenitor and precursor cells and is functionally important for their bone marrow lodgment. Blood 2006; 108:1230-3. [PMID: 16609068 PMCID: PMC1895871 DOI: 10.1182/blood-2005-12-013508] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The laminins are a group of extracellular matrix proteins with constitutive expression in all tissues, including bone marrow stroma. A functional role for the nonintegrin laminin receptor p67 has been described for cancer metastasis and lymphocyte trafficking. Expression of p67 was also reported for other subsets of mature leukocytes and for malignant hematopoietic or nonhematopoietic cells. We explored p67 expression on normal hematopoietic progenitor cells (HPCs) and its putative role in bone marrow retention of transplanted HPCs. We found p67 expression on a subset of primary human CD34(+) cells coexpressing erythroid markers. Of importance, p67 recognizes early erythroid progenitors, since sorted p67(+) cells were significantly enriched for burst-forming units-erythroid (BFU-Es) and depleted of colony-forming units--granulocyte/macrophage (CFU-GMs). Blockade of p67 binding of donor cells, using antifunctional antibody, reduced bone marrow homing of BFU-Es. These studies identify p67 as a novel phenotypic marker for erythroid HPCs of functional importance for lineage-specific homing/retention among adult transplanted HPCs.
Collapse
Affiliation(s)
- Halvard Bonig
- University of Washington, Departmen of Medicine/Hematology, Seattle, WA 98195-7720, USA.
| | | | | | | |
Collapse
|
22
|
Baloui H, von Boxberg Y, Vinh J, Weiss S, Rossier J, Nothias F, Stettler O. Cellular prion protein/laminin receptor: distribution in adult central nervous system and characterization of an isoform associated with a subtype of cortical neurons. Eur J Neurosci 2004; 20:2605-16. [PMID: 15548204 DOI: 10.1111/j.1460-9568.2004.03728.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The 67-kDa LR protein was originally discovered as a non-integrin laminin receptor. Several more recent in vitro studies demonstrated the function of 67-kDa LR and its related 'precursor' form 37-kDa LRP as receptors of cellular prion protein and their implication in abnormal prion protein propagation in vitro. In addition, expression of both proteins was shown to increase considerably in the brain of scrapie-infected mice and hamsters. While LRP/LR are thus likely to play important roles in neuronal cell adhesion, survival and homeostasis and during pathological disorders, little is known so far about their fine cellular distribution in adult central nervous system. Using immunocytochemistry and western blotting, we show here that the 67-kDa LR is the major receptor form in adult rat brain and spinal cord, expressed within the cytoplasm and at the plasma membrane of most neurons and in a subset of glial cells. The overall distribution of LR correlates well with that reported for laminin-1 but also with brain regions classically associated with prion-related neurodegeneration. In contrast to LR, the 37-kDa LRP form is much less abundant in adult than in postnatal central nervous system. Characterization of a novel antibody allowed us to study the distribution across tissues of cell membrane-associated LRP. Interestingly, this form is almost exclusively found on a subclass of parvalbumin-immunoreactive cortical interneurons known to degenerate during the early stages of Creutzfeldt-Jakob disease. Our demonstration of local differences in the expression of particular LRP/LR isoforms may be a first step towards unraveling their specific molecular interactions.
Collapse
Affiliation(s)
- Hasna Baloui
- UMR CNRS 7101, Université Pierre et Marie Curie (Paris 6), 7 quai St Bernard, 75005 Paris, France
| | | | | | | | | | | | | |
Collapse
|
23
|
Gaynor RB. A role for extracellular matrix binding receptors in regulating hematopoietic growth factor signaling. Proc Natl Acad Sci U S A 2003; 100:13737-8. [PMID: 14623967 PMCID: PMC283489 DOI: 10.1073/pnas.2536856100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Richard B Gaynor
- Lilly Research Laboratories, Lilly Corporate Center, Indianapolis, IN 46285, USA.
| |
Collapse
|