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Grenier JMP, Testut C, Bal M, Bardin F, De Grandis M, Gelsi-Boyer V, Vernerey J, Delahaye M, Granjeaud S, Zemmour C, Spinella JF, Chavakis T, Mancini SJC, Boher JM, Hébert J, Sauvageau G, Vey N, Schwaller J, Hospital MA, Fauriat C, Aurrand-Lions M. Genetic deletion of JAM-C in preleukemic cells rewires leukemic stem cell gene expression program in AML. Blood Adv 2024; 8:4662-4678. [PMID: 38954834 DOI: 10.1182/bloodadvances.2023011747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 05/23/2024] [Accepted: 06/19/2024] [Indexed: 07/04/2024] Open
Abstract
ABSTRACT The leukemic stem cell (LSC) score LSC-17 based on a stemness-related gene expression signature is an indicator of poor disease outcome in acute myeloid leukemia (AML). However, it is not known whether "niche anchoring" of LSC affects disease evolution. To address this issue, we conditionally inactivated the adhesion molecule JAM-C (Junctional Adhesion Molecule-C) expressed by hematopoietic stem cells (HSCs) and LSCs in an inducible mixed-lineage leukemia (iMLL)-AF9-driven AML mouse model. Deletion of Jam3 (encoding JAM-C) before induction of the leukemia-initiating iMLL-AF9 fusion resulted in a shift from long-term to short-term HSC expansion, without affecting disease initiation and progression. In vitro experiments showed that JAM-C controlled leukemic cell nesting irrespective of the bone marrow stromal cells used. RNA sequencing performed on leukemic HSCs isolated from diseased mice revealed that genes upregulated in Jam3-deficient animals belonged to activation protein-1 (AP-1) and tumor necrosis factor α (TNF-α)/NF-κB pathways. Human orthologs of dysregulated genes allowed to identify a score that was distinct from, and complementary to, the LSC-17 score. Substratification of patients with AML using LSC-17 and AP-1/TNF-α genes signature defined 4 groups with median survival ranging from <1 year to a median of "not reached" after 8 years. Finally, coculture experiments showed that AP-1 activation in leukemic cells was dependent on the nature of stromal cells. Altogether, our results identify the AP-1/TNF-α gene signature as a proxy of LSC anchoring in bone marrow niches, which improves the prognostic value of the LSC-17 score. This trial was registered at www.ClinicalTrials.gov as #NCT02320656.
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Affiliation(s)
- Julien M P Grenier
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
- UMR 7268, Aix-Marseille Université, EFS, CNRS, GENGLOBE, Marseille, France
| | - Céline Testut
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Matthieu Bal
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
- Département de la Recherche Clinique et de l'Innovation, Institut Paoli-Calmettes, Marseille, France
| | - Florence Bardin
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Maria De Grandis
- Aix-Marseille University, CNRS, EFS, ADES, Biologie des Groupes Sanguins, Marseille, France
- UMR 7268, Aix-Marseille Université, EFS, CNRS, GENGLOBE, Marseille, France
| | - Véronique Gelsi-Boyer
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Julien Vernerey
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Marjorie Delahaye
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Samuel Granjeaud
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Christophe Zemmour
- Département de la Recherche Clinique et de l'Innovation, Institut Paoli-Calmettes, Marseille, France
| | - Jean-François Spinella
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Triantafyllos Chavakis
- Institute for Clinical Chemistry and Laboratory Medicine, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany
| | - Stéphane J C Mancini
- UMR 1236, University of Rennes, INSERM, Etablissement Français du Sang Bretagne, Rennes, France
| | - Jean-Marie Boher
- Département de la Recherche Clinique et de l'Innovation, Institut Paoli-Calmettes, Marseille, France
| | - Josée Hébert
- Division of Hematology-Oncology, Department of Medicine, Maisonneuve-Rosemont Hospital, Université de Montréal, Montreal, QC, Canada
| | - Guy Sauvageau
- Laboratory of Molecular Genetics of Stem Cells, Institute for Research in Immunology and Cancer, University of Montreal, Montreal, QC, Canada
| | - Norbert Vey
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Jürg Schwaller
- Department of Biomedicine, University Children's Hospital, University of Basel, Basel, Switzerland
| | | | - Cyril Fauriat
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
| | - Michel Aurrand-Lions
- Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Equipe Labellisée Ligue 2020, Marseille, France
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2
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Liu Z, Sun D, Wang C. Evaluation of cell-cell interaction methods by integrating single-cell RNA sequencing data with spatial information. Genome Biol 2022; 23:218. [PMID: 36253792 PMCID: PMC9575221 DOI: 10.1186/s13059-022-02783-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 10/04/2022] [Indexed: 11/17/2022] Open
Abstract
Background Cell-cell interactions are important for information exchange between different cells, which are the fundamental basis of many biological processes. Recent advances in single-cell RNA sequencing (scRNA-seq) enable the characterization of cell-cell interactions using computational methods. However, it is hard to evaluate these methods since no ground truth is provided. Spatial transcriptomics (ST) data profiles the relative position of different cells. We propose that the spatial distance suggests the interaction tendency of different cell types, thus could be used for evaluating cell-cell interaction tools. Results We benchmark 16 cell-cell interaction methods by integrating scRNA-seq with ST data. We characterize cell-cell interactions into short-range and long-range interactions using spatial distance distributions between ligands and receptors. Based on this classification, we define the distance enrichment score and apply an evaluation workflow to 16 cell-cell interaction tools using 15 simulated and 5 real scRNA-seq and ST datasets. We also compare the consistency of the results from single tools with the commonly identified interactions. Our results suggest that the interactions predicted by different tools are highly dynamic, and the statistical-based methods show overall better performance than network-based methods and ST-based methods. Conclusions Our study presents a comprehensive evaluation of cell-cell interaction tools for scRNA-seq. CellChat, CellPhoneDB, NicheNet, and ICELLNET show overall better performance than other tools in terms of consistency with spatial tendency and software scalability. We recommend using results from at least two methods to ensure the accuracy of identified interactions. We have packaged the benchmark workflow with detailed documentation at GitHub (https://github.com/wanglabtongji/CCI). Supplementary Information The online version contains supplementary material available at 10.1186/s13059-022-02783-y.
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Affiliation(s)
- Zhaoyang Liu
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Department of Orthopedics, Tongji Hospital, School of Life Science and Technology, Tongji University, Shanghai, 200092, China.,Frontier Science Center for Stem Cells, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Dongqing Sun
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Department of Orthopedics, Tongji Hospital, School of Life Science and Technology, Tongji University, Shanghai, 200092, China.,Frontier Science Center for Stem Cells, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China
| | - Chenfei Wang
- Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of Education, Department of Orthopedics, Tongji Hospital, School of Life Science and Technology, Tongji University, Shanghai, 200092, China. .,Frontier Science Center for Stem Cells, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China.
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3
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Labuz DF, Whitlock AE, Kycia I, Zurakowski D, Fauza DO. Routing pathway of syngeneic donor hematopoietic stem cells after simple intra-amniotic delivery. J Pediatr Surg 2022; 57:986-990. [PMID: 35279287 DOI: 10.1016/j.jpedsurg.2022.01.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 01/31/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND We sought to determine the pathway through which syngeneic hematopoietic stem cells (HSCs) delivered into the amniotic fluid can reach the fetal circulation. METHODS Lewis rat fetuses were divided in two groups based on the content of intra-amniotic injections performed on gestational day 17 (E17; term=E21-22): either a suspension of luciferase-labeled syngeneic HSCs (n = 137), or acellular luciferase (n = 44). Samples from placenta, chorion, amnion, amniotic fluid, umbilical cord, and 8 fetal sites were procured at 5 daily time points thereafter until term for analysis. RESULTS When controlled by acellular luciferase, donor HSCs were identified in the amnion, chorion, placenta, and amniotic fluid of fetuses receiving cells at all time points (p = 0.033 to <0.001), peaking first at the amnion and subsequently at the chorion and placenta. Cells could be detected in the fetal liver as early as day 1, progressively expanding to all the other fetal sites over time, in parallel to their increased presence in the chorion and placenta. CONCLUSIONS The chronology of syngeneic donor hematopoietic stem cell trafficking after intra-amniotic injection is suggestive of controlled routing through the gestational membranes and placenta. Hematogenous donor cell routing is a constituent of transamniotic hematopoietic stem cell therapy, significantly expanding its potential applications.
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Affiliation(s)
- Daniel F Labuz
- Department of Surgery, Boston Children's Hospital/ Harvard Medical School, Boston, MA, United States of America
| | - Ashlyn E Whitlock
- Department of Surgery, Boston Children's Hospital/ Harvard Medical School, Boston, MA, United States of America
| | - Ina Kycia
- Department of Surgery, Boston Children's Hospital/ Harvard Medical School, Boston, MA, United States of America
| | - David Zurakowski
- Department of Surgery, Boston Children's Hospital/ Harvard Medical School, Boston, MA, United States of America
| | - Dario O Fauza
- Department of Surgery, Boston Children's Hospital/ Harvard Medical School, Boston, MA, United States of America.
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4
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Xie H, Sun Z, Xiao X, Liu D, Qi H, Tian G, Chen M, Chen L, Su X. Transient Inhibition of the JNK Pathway Promotes Human Hematopoietic Stem Cell Quiescence and Engraftment. Stem Cells Transl Med 2022; 11:597-603. [PMID: 35427423 PMCID: PMC9216500 DOI: 10.1093/stcltm/szac019] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 03/04/2022] [Indexed: 01/31/2023] Open
Abstract
The widespread clinical application of cord blood (CB) for hematopoietic stem cell (HSC) transplantation is limited mainly by the inadequate number of hematopoietic stem and progenitor cells (HSPCs) in single CB units, which results in unsuccessful or delayed engraftment in recipients. The identification of agents to promote CB HSPC engraftment has significant therapeutic value. Here, we found that transient inhibition of the JNK pathway increased the HSC frequency in CB CD34+ cells to 13.46-fold. Mechanistic studies showed that inhibition of the JNK pathway upregulated the expression of quiescence-associated and stemness genes in HSCs, preventing HSCs from entering the cell cycle, increasing glucose uptake and accumulating reactive oxygen species (ROS). Importantly, transient inhibition of the JNK pathway during CB CD34+ cell collection also enhanced long-term HSC (LT-HSC) recovery and engraftment efficiency. Collectively, these findings suggest that transient inhibition of the JNK pathway could promote a quiescent state in HSCs by preventing cell cycle entry and metabolic activation, thus enhancing the HSC number and engraftment potential. Together, these findings improve the understanding of the regulatory mechanisms governing HSC quiescence and stemness and have the potential to improve HSC collection and transplantation.
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Affiliation(s)
| | | | | | - Defang Liu
- Newish Technology (Beijing) Co. Ltd., Beijing, People’s Republic of China
| | - Hailong Qi
- Newish Technology (Beijing) Co. Ltd., Beijing, People’s Republic of China
| | - Guoxiong Tian
- Newish Technology (Beijing) Co. Ltd., Beijing, People’s Republic of China
| | - Miao Chen
- Miao Chen, MD, Peking Union Medical College Hospital (East), Beijing 100730, People’s Republic of China. Tel: +86 186230229;
| | - Ligong Chen
- Ligong Chen, PhD, School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, People’s Republic of China. Tel: +86 10 62782978; Fax: +86 10 62782978;
| | - XunCheng Su
- Corresponding author: XunCheng Su, PhD, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China. Tel: +86 0222 3503067; Fax: +86 0222 3503067;
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5
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Wang J, Liu H. The Roles of Junctional Adhesion Molecules (JAMs) in Cell Migration. Front Cell Dev Biol 2022; 10:843671. [PMID: 35356274 PMCID: PMC8959349 DOI: 10.3389/fcell.2022.843671] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 02/10/2022] [Indexed: 01/15/2023] Open
Abstract
The review briefly summarizes the role of the family of adhesion molecules, JAMs (junctional adhesion molecules), in various cell migration, covering germ cells, epithelial cells, endothelial cells, several leukocytes, and different cancer cells. These functions affect multiple diseases, including reproductive diseases, inflammation-related diseases, cardiovascular diseases, and cancers. JAMs bind to both similar and dissimilar proteins and take both similar and dissimilar effects on different cells. Concluding relevant results provides a reference to further research.
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Affiliation(s)
- Junqi Wang
- Beijing Proteome Research Center, Beijing Institute of Lifeomics, Beijing, China
| | - Han Liu
- Department of Pharmacy, People’s Hospital of Longhua, Shenzhen, China
- *Correspondence: Han Liu,
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Biological Therapies in the Treatment of Cancer-Update and New Directions. Int J Mol Sci 2021; 22:ijms222111694. [PMID: 34769123 PMCID: PMC8583892 DOI: 10.3390/ijms222111694] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/23/2021] [Accepted: 10/25/2021] [Indexed: 12/22/2022] Open
Abstract
Biological therapies have changed the face of oncology by targeting cancerous cells while reducing the effect on normal tissue. This publication focuses mainly on new therapies that have contributed to the advances in treatment of certain malignancies. Immunotherapy, which has repeatedly proven to be a breakthrough therapy in melanoma, as well as B-ALL therapy with CAR T cells, are of great merit in this progress. These therapies are currently being developed by modifying bispecific antibodies and CAR T cells to improve their efficiency and bioavailability. Work on improving the therapy with oncolytic viruses is also progressing, and efforts are being made to improve the immunogenicity and stability of cancer vaccines. Combining various biological therapies, immunotherapy with oncolytic viruses or cancer vaccines is gaining importance in cancer therapy. New therapeutic targets are intensively sought among neoantigens, which are not immunocompromised, or antigens associated with tumor stroma cells. An example is fibroblast activation protein α (FAPα), the overexpression of which is observed in the case of tumor progression. Universal therapeutic targets are also sought, such as the neurotrophic receptor tyrosine kinase (NTRK) gene fusion, a key genetic driver present in many types of cancer. This review also raises the problem of the tumor microenvironment. Stromal cells can protect tumor cells from chemotherapy and contribute to relapse and progression. This publication also addresses the problem of cancer stem cells resistance to treatment and presents attempts to avoid this phenomenon. This review focuses on the most important strategies used to improve the selectivity of biological therapies.
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7
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Gorshkova O, Cappaï J, Maillot L, Sergé A. Analyzing normal and disrupted leukemic stem cell adhesion to bone marrow stromal cells by single-molecule tracking nanoscopy. J Cell Sci 2021; 134:271951. [PMID: 34435622 DOI: 10.1242/jcs.258736] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/02/2021] [Indexed: 01/02/2023] Open
Abstract
Leukemic stem cells (LSCs) adhere to bone niches through adhesion molecules. These interactions, which are deeply reorganized in tumors, contribute to LSC resistance to chemotherapy and leukemia relapse. However, LSC adhesion mechanisms and potential therapeutic disruption using blocking antibodies remain largely unknown. Junctional adhesion molecule C (JAM-C, also known as JAM3) overexpression by LSCs correlates with increased leukemia severity, and thus constitutes a putative therapeutic target. Here, we took advantage of the ability of nanoscopy to detect single molecules with nanometric accuracy to characterize junctional adhesion molecule (JAM) dynamics at leuko-stromal contacts. Videonanoscopy trajectories were reconstructed using our dedicated multi-target tracing algorithm, pipelined with dual-color analyses (MTT2col). JAM-C expressed by LSCs engaged in transient interactions with JAM-B (also known as JAM2) expressed by stromal cells. JAM recruitment and colocalization at cell contacts were proportional to JAM-C level and reduced by a blocking anti-JAM-C antibody. MTT2col revealed, at single-molecule resolution, the ability of blocking antibodies to destabilize LSC binding to their niches, opening opportunities for disrupting LSC resistance mechanisms.
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Affiliation(s)
- Oksana Gorshkova
- Centre de recherche en cancérologie de Marseille (CRCM), Centre national de la recherche scientifique (CNRS), Institut national de la santé et de la recherche médicale (Inserm), Institut Paoli-Calmettes (IPC), Aix-Marseille Université, F-13273 Marseille, France
| | - Jessica Cappaï
- Centre de recherche en cancérologie de Marseille (CRCM), Centre national de la recherche scientifique (CNRS), Institut national de la santé et de la recherche médicale (Inserm), Institut Paoli-Calmettes (IPC), Aix-Marseille Université, F-13273 Marseille, France
| | - Loriane Maillot
- Laboratoire adhésion inflammation (LAI), Centre national de la recherche scientifique (CNRS), Institut national de la santé et de la recherche médicale (Inserm), Aix-Marseille Université, F-13288 Marseille, France
| | - Arnauld Sergé
- Centre de recherche en cancérologie de Marseille (CRCM), Centre national de la recherche scientifique (CNRS), Institut national de la santé et de la recherche médicale (Inserm), Institut Paoli-Calmettes (IPC), Aix-Marseille Université, F-13273 Marseille, France.,Laboratoire adhésion inflammation (LAI), Centre national de la recherche scientifique (CNRS), Institut national de la santé et de la recherche médicale (Inserm), Aix-Marseille Université, F-13288 Marseille, France
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8
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Flow Cytometry Analysis of Mouse Hematopoietic Stem and Multipotent Progenitor Cells. Methods Mol Biol 2021. [PMID: 34057715 DOI: 10.1007/978-1-0716-1425-9_6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Flow cytometry has been widely used to detect a single event by means of multiparametric fluorescence measurements. Here we describe a method to analyze subsets of hematopoietic stem and progenitor cells isolated from long bones of mice. We further show that this method allows for comparing JAM-C protein expression between subsets of hematopoietic stem and progenitor cells.
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JAM-C/ Jam-C Expression Is Primarily Expressed in Mouse Hematopoietic Stem Cells. Hemasphere 2021; 5:e594. [PMID: 34131634 PMCID: PMC8196118 DOI: 10.1097/hs9.0000000000000594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/26/2021] [Indexed: 12/02/2022] Open
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Yamazaki M, Sugimoto K, Mabuchi Y, Yamashita R, Ichikawa-Tomikawa N, Kaneko T, Akazawa C, Hasegawa H, Imura T, Chiba H. Soluble JAM-C Ectodomain Serves as the Niche for Adipose-Derived Stromal/Stem Cells. Biomedicines 2021; 9:biomedicines9030278. [PMID: 33801826 PMCID: PMC8000331 DOI: 10.3390/biomedicines9030278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 11/20/2022] Open
Abstract
Junctional adhesion molecules (JAMs) are expressed in diverse types of stem and progenitor cells, but their physiological significance has yet to be established. Here, we report that JAMs exhibit a novel mode of interaction and biological activity in adipose-derived stromal/stem cells (ADSCs). Among the JAM family members, JAM-B and JAM-C were concentrated along the cell membranes of mouse ADSCs. JAM-C but not JAM-B was broadly distributed in the interstitial spaces of mouse adipose tissue. Interestingly, the JAM-C ectodomain was cleaved and secreted as a soluble form (sJAM-C) in vitro and in vivo, leading to deposition in the fat interstitial tissue. When ADSCs were grown in culture plates coated with sJAM-C, cell adhesion, cell proliferation and the expression of five mesenchymal stem cell markers, Cd44, Cd105, Cd140a, Cd166 and Sca-1, were significantly elevated. Moreover, immunoprecipitation assay showed that sJAM-C formed a complex with JAM-B. Using CRISPR/Cas9-based genome editing, we also demonstrated that sJAM-C was coupled with JAM-B to stimulate ADSC adhesion and maintenance. Together, these findings provide insight into the unique function of sJAM-C in ADSCs. We propose that JAMs contribute not only to cell–cell adhesion, but also to cell–matrix adhesion, by excising their ectodomain and functioning as a niche-like microenvironment for stem and progenitor cells.
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Affiliation(s)
- Morio Yamazaki
- Department of Basic Pathology, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (M.Y.); (R.Y.); (N.I.-T.); (T.I.)
- Division of Dentistry and Oral Surgery, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (T.K.); (H.H.)
| | - Kotaro Sugimoto
- Department of Basic Pathology, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (M.Y.); (R.Y.); (N.I.-T.); (T.I.)
- Correspondence: (K.S.); (H.C.)
| | - Yo Mabuchi
- Department of Biochemistry and Biophysics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan; (Y.M.); (C.A.)
| | - Rina Yamashita
- Department of Basic Pathology, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (M.Y.); (R.Y.); (N.I.-T.); (T.I.)
| | - Naoki Ichikawa-Tomikawa
- Department of Basic Pathology, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (M.Y.); (R.Y.); (N.I.-T.); (T.I.)
| | - Tetsuharu Kaneko
- Division of Dentistry and Oral Surgery, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (T.K.); (H.H.)
| | - Chihiro Akazawa
- Department of Biochemistry and Biophysics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo 113-8510, Japan; (Y.M.); (C.A.)
| | - Hiroshi Hasegawa
- Division of Dentistry and Oral Surgery, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (T.K.); (H.H.)
| | - Tetsuya Imura
- Department of Basic Pathology, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (M.Y.); (R.Y.); (N.I.-T.); (T.I.)
| | - Hideki Chiba
- Department of Basic Pathology, School of Medicine, Fukushima Medical University, Fukushima 960-1295, Japan; (M.Y.); (R.Y.); (N.I.-T.); (T.I.)
- Correspondence: (K.S.); (H.C.)
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Henry E, Arcangeli ML. How Hematopoietic Stem Cells Respond to Irradiation: Similarities and Differences between Low and High Doses of Ionizing Radiations. Exp Hematol 2020; 94:11-19. [PMID: 33290858 DOI: 10.1016/j.exphem.2020.12.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/12/2020] [Accepted: 12/01/2020] [Indexed: 12/12/2022]
Abstract
In this review, we will specifically address the newest insights on the effect of low doses of ionizing radiations on the hematopoietic stem cells, which are prone to long-term deleterious effects. Impact of high doses of irradiation on hematopoietic cells has been widely studied over the years, in line with the risk of accidental or terrorist exposure to irradiation and with a particular attention to the sensitivity of the hematopoietic system. Recently, more studies have focused on lower doses of irradiation on different tissues, due to the increasing exposure caused by medical imaging, radiotherapy or plane travelling for instance. Hence, we will delineate similarities and discrepancies in HSC response to high and low doses of irradiation from these studies.
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Affiliation(s)
- Elia Henry
- Team Niche and Cancer in Hematopoiesis, U1274, INSERM, 92260 Fontenay-aux-Roses, France; Laboratory of Hematopoietic Stem Cells and Leukemia/Service Stem Cells and Radiation/iRCM/JACOB/DRF, CEA, Fontenay-aux-Roses, France; UMR Stabilité Génétique Cellules Souches et Radiations, Université de Paris, CEA, Fontenay-aux-Roses, France; UMR Stabilité Génétique Cellules Souches et Radiations, Université Paris-Saclay, CEA, Fontenay-aux-Roses, France
| | - Marie-Laure Arcangeli
- Team Niche and Cancer in Hematopoiesis, U1274, INSERM, 92260 Fontenay-aux-Roses, France; Laboratory of Hematopoietic Stem Cells and Leukemia/Service Stem Cells and Radiation/iRCM/JACOB/DRF, CEA, Fontenay-aux-Roses, France; UMR Stabilité Génétique Cellules Souches et Radiations, Université de Paris, CEA, Fontenay-aux-Roses, France; UMR Stabilité Génétique Cellules Souches et Radiations, Université Paris-Saclay, CEA, Fontenay-aux-Roses, France.
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12
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Harman RM, Patel RS, Fan JC, Park JE, Rosenberg BR, Van de Walle GR. Single-cell RNA sequencing of equine mesenchymal stromal cells from primary donor-matched tissue sources reveals functional heterogeneity in immune modulation and cell motility. Stem Cell Res Ther 2020; 11:524. [PMID: 33276815 PMCID: PMC7716481 DOI: 10.1186/s13287-020-02043-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 11/23/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND The efficacy of mesenchymal stromal cell (MSC) therapy is thought to depend on the intrinsic heterogeneity of MSC cultures isolated from different tissue sources as well as individual MSCs isolated from the same tissue source, neither of which is well understood. To study this, we used MSC cultures isolated from horses. The horse is recognized as a physiologically relevant large animal model appropriate for translational MSC studies. Moreover, due to its large size the horse allows for the simultaneous collection of adequate samples from multiple tissues of the same animal, and thus, for the unique collection of donor matched MSC cultures from different sources. The latter is much more challenging in mice and humans due to body size and ethical constraints, respectively. METHODS In the present study, we performed single-cell RNA sequencing (scRNA-seq) on primary equine MSCs that were collected from three donor-matched tissue sources; adipose tissue (AT), bone marrow (BM), and peripheral blood (PB). Based on transcriptional differences detected with scRNA-seq, we performed functional experiments to examine motility and immune regulatory function in distinct MSC populations. RESULTS We observed both inter- and intra-source heterogeneity across the three sources of equine MSCs. Functional experiments demonstrated that transcriptional differences correspond with phenotypic variance in cellular motility and immune regulatory function. Specifically, we found that (i) differential expression of junctional adhesion molecule 2 (JAM2) between MSC cultures from the three donor-matched tissue sources translated into altered cell motility of BM-derived MSCs when RNA interference was used to knock down this gene, and (ii) differences in C-X-C motif chemokine ligand 6 (CXCL6) expression in clonal MSC lines derived from the same tissue source correlated with the chemoattractive capacity of PB-derived MSCs. CONCLUSIONS Ultimately, these findings will enhance our understanding of MSC heterogeneity and will lead to improvements in the therapeutic potential of MSCs, accelerating the transition from bench to bedside.
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Affiliation(s)
- Rebecca M Harman
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Roosheel S Patel
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Jennifer C Fan
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Jee E Park
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Brad R Rosenberg
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
| | - Gerlinde R Van de Walle
- Baker Institute for Animal Health, College of Veterinary Medicine, Cornell University, Ithaca, NY, 14853, USA.
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13
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In Vivo Pre-Instructed HSCs Robustly Execute Asymmetric Cell Divisions In Vitro. Int J Mol Sci 2020; 21:ijms21218225. [PMID: 33153113 PMCID: PMC7663432 DOI: 10.3390/ijms21218225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/31/2020] [Accepted: 10/31/2020] [Indexed: 01/12/2023] Open
Abstract
Hematopoietic stem cells (HSCs) are responsible for life-long production of all mature blood cells. Under homeostasis, HSCs in their native bone marrow niches are believed to undergo asymmetric cell divisions (ACDs), with one daughter cell maintaining HSC identity and the other committing to differentiate into various mature blood cell types. Due to the lack of key niche signals, in vitro HSCs differentiate rapidly, making it challenging to capture and study ACD. To overcome this bottleneck, in this study, we used interferon alpha (IFNα) treatment to "pre-instruct" HSC fate directly in their native niche, and then systematically studied the fate of dividing HSCs in vitro at the single cell level via time-lapse analysis, as well as multigene and protein expression analysis. Triggering HSCs' exit from dormancy via IFNα was found to significantly increase the frequency of asynchronous divisions in paired daughter cells (PDCs). Using single-cell gene expression analyses, we identified 12 asymmetrically expressed genes in PDCs. Subsequent immunocytochemistry analysis showed that at least three of the candidates, i.e., Glut1, JAM3 and HK2, were asymmetrically distributed in PDCs. Functional validation of these observations by colony formation assays highlighted the implication of asymmetric distribution of these markers as hallmarks of HSCs, for example, to reliably discriminate committed and self-renewing daughter cells in dividing HSCs. Our data provided evidence for the importance of in vivo instructions in guiding HSC fate, especially ACD, and shed light on putative molecular players involved in this process. Understanding the mechanisms of cell fate decision making should enable the development of improved HSC expansion protocols for therapeutic applications.
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14
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Yu X, Sun P, Huang X, Chen H, Huang W, Ruan Y, Jiang W, Tan X, Liu Z. RNA-seq reveals tight junction-relevant erythropoietic fate induced by OCT4 in human hair follicle mesenchymal stem cells. Stem Cell Res Ther 2020; 11:454. [PMID: 33109258 PMCID: PMC7590701 DOI: 10.1186/s13287-020-01976-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/14/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Human hair follicle mesenchymal stem cells (hHFMSCs) isolated from hair follicles possess multilineage differentiation potential. OCT4 is a gene critically associated with pluripotency properties. The cell morphology and adhesion of hHFMSCs significantly changed after transduction of OCT4 and two subpopulations emerged, including adherent cells and floating cell. Floating cells cultured in hematopoietic induction medium and stimulated with erythropoetic growth factors could transdifferentiate into mature erythrocytes, whereas adherent cells formed negligible hematopoietic colonies. The aim of this study was to reveal the role of cell morphology and adhesion on erythropoiesis induced by OCT4 in hHFMSCs and to characterize the molecular mechanisms involved. METHODS Floating cell was separated from adherent cell by centrifugation of the upper medium during cell culture. Cell size was observed through flow cytometry and cell adhesion was tested by disassociation and adhesion assays. RNA sequencing was performed to detect genome-wide transcriptomes and identify differentially expressed genes. GO enrichment analysis and KEGG pathway analysis were performed to analysis the functions and pathways enriched by differentially expressed genes. The expression of tight junction core members was verified by qPCR and Western blot. A regulatory network was constructed to figure out the relationship between cell adhesin, cytoskeleton, pluripotency, and hematopoiesis. RESULTS The overexpression of OCT4 influenced the morphology and adhesion of hHFMSCs. Transcripts in floating cells and adherent cells are quite different. Data analysis showed that upregulated genes in floating cells were mainly related to pluripotency, germ layer development (including hematopoiesis lineage development), and downregulated genes were mainly related to cell adhesion, cell junctions, and the cytoskeleton. Most molecules of the tight junction (TJ) pathway were downregulated and molecular homeostasis of the TJ was disturbed, as CLDNs were disrupted, and JAMs and TJPs were upregulated. The dynamic expression of cell adhesion-related gene E-cadherin and cytoskeleton-related gene ACTN2 might cause different morphology and adhesion. Finally, a regulatory network centered to OCT4 was constructed, which elucidated that he TJ pathway critically bridges pluripotency and hematopoiesis in a TJP1-dependent way. CONCLUSIONS Regulations of cell morphology and adhesion via the TJ pathway conducted by OCT4 might modulate hematopoiesis in hHFMSCs, thus developing potential mechanism of erythropoiesis in vitro.
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Affiliation(s)
- Xiaozhen Yu
- Department of Pathology, College of Basic Medical Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, Shandong, China
| | - Pengpeng Sun
- Department of Critical Care Medicine, Qingdao Center Hospital, affiliated with Qingdao University, 127 Siliunan Road, Qingdao, 266042, Shandong, China
| | - Xingang Huang
- Department of Pathology, Qingdao Municipal Hospital, affiliated with Qingdao University, 1 Jiaozhou Road, Qingdao, 266011, Shandong, China
| | - Hua Chen
- Department of Pathology, College of Basic Medical Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, Shandong, China.,Department of Pathology, Qingdao Municipal Hospital, affiliated with Qingdao University, 1 Jiaozhou Road, Qingdao, 266011, Shandong, China
| | - Weiqing Huang
- Department of Pathology, Qingdao Municipal Hospital, affiliated with Qingdao University, 1 Jiaozhou Road, Qingdao, 266011, Shandong, China
| | - Yingchun Ruan
- Department of Pathology, College of Basic Medical Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, Shandong, China
| | - Weina Jiang
- Department of Pathology, Qingdao Municipal Hospital, affiliated with Qingdao University, 1 Jiaozhou Road, Qingdao, 266011, Shandong, China
| | - Xiaohua Tan
- Department of Pathology, College of Basic Medical Sciences, Qingdao University, 308 Ningxia Road, Qingdao, 266071, Shandong, China
| | - Zhijing Liu
- Department of Pathology, Qingdao Municipal Hospital, affiliated with Qingdao University, 1 Jiaozhou Road, Qingdao, 266011, Shandong, China.
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15
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Radulovic V, van der Garde M, Koide S, Sigurdsson V, Lang S, Kaneko S, Miharada K. Junctional Adhesion Molecule 2 Represents a Subset of Hematopoietic Stem Cells with Enhanced Potential for T Lymphopoiesis. Cell Rep 2020; 27:2826-2836.e5. [PMID: 31167130 DOI: 10.1016/j.celrep.2019.05.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 03/18/2019] [Accepted: 05/06/2019] [Indexed: 01/29/2023] Open
Abstract
The distinct lineage potential is a key feature of hematopoietic stem cell (HSC) heterogeneity, but a subset of HSCs specialized for a single lymphoid compartment has not been identified. Here we report that HSCs expressing junctional adhesion molecule 2 (Jam2) at a higher level (Jam2high HSCs) have a greater T cell reconstitution capacity. Jam2high HSCs are metabolically dormant but preferentially differentiate toward lymphocytes, especially T cell lineages. Jam2high HSCs uniquely express T cell-related genes, and the interaction with Jam1 facilitates the Notch/Delta signaling pathway. Frequency of Jam2high HSCs changes upon T cell depletion in vivo, potentially suggesting that Jam2 expression may reflect scarcity of T cells and requirement of T cell replenishment. Our findings highlight Jam2 as a potential marker for a subfraction of HSCs with an extensive lymphopoietic capacity, mainly in T lymphopoiesis.
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Affiliation(s)
- Visnja Radulovic
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden
| | - Mark van der Garde
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden
| | - Shuhei Koide
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden
| | - Valgardur Sigurdsson
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden
| | - Stefan Lang
- StemTherapy Bioinformatics Core Facility, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden
| | - Shin Kaneko
- Center of iPS Cell Research and Application, Kyoto University, 606-8507 Kyoto, Japan
| | - Kenichi Miharada
- Division of Molecular Medicine and Gene Therapy, Lund Stem Cell Center, Lund University, 22184 Lund, Sweden.
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16
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Villatoro A, Konieczny J, Cuminetti V, Arranz L. Leukemia Stem Cell Release From the Stem Cell Niche to Treat Acute Myeloid Leukemia. Front Cell Dev Biol 2020; 8:607. [PMID: 32754595 PMCID: PMC7367216 DOI: 10.3389/fcell.2020.00607] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/19/2020] [Indexed: 01/06/2023] Open
Abstract
Acute myeloid leukemia (AML) is a heterogeneous, complex, and deadly disease, whose treatment has hardly evolved for decades and grounds on the use of intensive chemotherapy regimens. Chemotherapy helps reduce AML bulk, but promotes relapse in the long-run by selection of chemoresistant leukemia stem cells (LSC). These may diversify and result in progression to more aggressive forms of AML. In vivo models suggest that the bone marrow stem cell niche helps LSC stay dormant and protected from chemotherapy. Here, we summarize relevant changes in stem cell niche homing and adhesion of AML LSC vs. healthy hematopoietic stem cells, and provide an overview of clinical trials aiming at targeting these processes for AML treatment and future directions within this field. Promising results with various non-mutation-targeted novel therapies directed to LSC eradication via interference with their anchoring to the stem cell niche have encouraged on-going or future advanced phase III clinical trials. In the coming years, we may see a shift in the focus of AML treatment to LSC-directed therapies if the prospect of improved cure rates holds true. In the future, AML treatment should lean toward personalized therapies using combinations of these compounds plus mutation-targeted agents and/or targeted delivery of chemotherapy, aiming at LSC eradication with reduced side effects.
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Affiliation(s)
- Alicia Villatoro
- Stem Cell Aging and Cancer Research Group, Department of Medical Biology, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Joanna Konieczny
- Stem Cell Aging and Cancer Research Group, Department of Medical Biology, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Vincent Cuminetti
- Stem Cell Aging and Cancer Research Group, Department of Medical Biology, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Lorena Arranz
- Stem Cell Aging and Cancer Research Group, Department of Medical Biology, Faculty of Health Sciences, UiT - The Arctic University of Norway, Tromsø, Norway.,Norwegian Center for Molecular Medicine (NCMM), University of Oslo, Oslo, Norway
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17
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Hromowyk KJ, Talbot JC, Martin BL, Janssen PML, Amacher SL. Cell fusion is differentially regulated in zebrafish post-embryonic slow and fast muscle. Dev Biol 2020; 462:85-100. [PMID: 32165147 PMCID: PMC7225055 DOI: 10.1016/j.ydbio.2020.03.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 02/08/2020] [Accepted: 03/03/2020] [Indexed: 12/13/2022]
Abstract
Skeletal muscle fusion occurs during development, growth, and regeneration. To investigate how muscle fusion compares among different muscle cell types and developmental stages, we studied muscle cell fusion over time in wild-type, myomaker (mymk), and jam2a mutant zebrafish. Using live imaging, we show that embryonic myoblast elongation and fusion correlate tightly with slow muscle cell migration. In wild-type embryos, only fast muscle fibers are multinucleate, consistent with previous work showing that the cell fusion regulator gene mymk is specifically expressed throughout the embryonic fast muscle domain. However, by 3 weeks post-fertilization, slow muscle fibers also become multinucleate. At this late-larval stage, mymk is not expressed in muscle fibers, but is expressed in small cells near muscle fibers. Although previous work showed that both mymk and jam2a are required for embryonic fast muscle cell fusion, we observe that muscle force and function is almost normal in mymk and jam2a mutant embryos, despite the lack of fast muscle multinucleation. We show that genetic requirements change post-embryonically, with jam2a becoming much less important by late-larval stages and mymk now required for muscle fusion and growth in both fast and slow muscle cell types. Correspondingly, adult mymk mutants perform poorly in sprint and endurance tests compared to wild-type and jam2a mutants. We show that adult mymk mutant muscle contains small mononucleate myofibers with average myonuclear domain size equivalent to that in wild type adults. The mymk mutant fibers have decreased Laminin expression and increased numbers of Pax7-positive cells, suggesting that impaired fiber growth and active regeneration contribute to the muscle phenotype. Our findings identify several aspects of muscle fusion that change with time in slow and fast fibers as zebrafish develop beyond embryonic stages.
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Affiliation(s)
- Kimberly J Hromowyk
- Department of Molecular Genetics and Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH, 43210, USA; Center for Muscle Health and Neuromuscular Disorders, The Ohio State University and Nationwide Children's Hospital, Columbus, OH, 43210, USA; Molecular, Cellular, and Developmental Biology Graduate Program, The Ohio State University, Columbus, OH, 43210, USA
| | - Jared C Talbot
- Department of Molecular Genetics and Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH, 43210, USA; Center for Muscle Health and Neuromuscular Disorders, The Ohio State University and Nationwide Children's Hospital, Columbus, OH, 43210, USA.
| | - Brit L Martin
- Center for Muscle Health and Neuromuscular Disorders, The Ohio State University and Nationwide Children's Hospital, Columbus, OH, 43210, USA; Molecular, Cellular, and Developmental Biology Graduate Program, The Ohio State University, Columbus, OH, 43210, USA; Department of Physiology and Cell Biology, The Ohio State University, Columbus, OH, 43210, USA
| | - Paul M L Janssen
- Center for Muscle Health and Neuromuscular Disorders, The Ohio State University and Nationwide Children's Hospital, Columbus, OH, 43210, USA; Department of Physiology and Cell Biology, The Ohio State University, Columbus, OH, 43210, USA; Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, 43210, USA
| | - Sharon L Amacher
- Department of Molecular Genetics and Biological Chemistry and Pharmacology, The Ohio State University, Columbus, OH, 43210, USA; Center for Muscle Health and Neuromuscular Disorders, The Ohio State University and Nationwide Children's Hospital, Columbus, OH, 43210, USA; Center for RNA Biology, The Ohio State University, Columbus, OH, 43210, USA.
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18
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Bailly AL, Grenier JMP, Cartier-Michaud A, Bardin F, Balzano M, Goubard A, Lissitzky JC, De Grandis M, Mancini SJC, Serge A, Aurrand-Lions M. GRASP55 Is Dispensable for Normal Hematopoiesis but Necessary for Myc-Dependent Leukemic Growth. THE JOURNAL OF IMMUNOLOGY 2020; 204:2685-2696. [PMID: 32229537 DOI: 10.4049/jimmunol.1901124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 03/03/2020] [Indexed: 11/19/2022]
Abstract
Grasp55 is a ubiquitous Golgi stacking protein involved in autophagy, protein trafficking, and glucose deprivation sensing. The function of Grasp55 in protein trafficking has been attributed to its PDZ-mediated interaction with the C-terminal PDZ-binding motifs of protein cargos. We have recently shown that such an interaction occurs between Grasp55 and the adhesion molecule Jam-C, which plays a central role in stemness maintenance of hematopoietic and spermatogenic cells. Accordingly, we have found that Grasp55-deficient mice suffer from spermatogenesis defects similar to Jam-C knockout mice. However, whether Grasp55 is involved in the maintenance of immunohematopoietic homeostasis through regulation of protein transport and Jam-C expression remains unknown. In this study, we show that Grasp55 deficiency does not affect hematopoietic stem cell differentiation, engraftment, or mobilization, which are known to depend on expression of Grasp55-dependent protein cargos. In contrast, using an Myc-dependent leukemic model addicted to autophagy, we show that knockdown of Grasp55 in leukemic cells reduces spleen and bone marrow tumor burden upon i.v. leukemic engraftment. This is not due to reduced homing of Grasp55-deficient cells to these organs but to increased spontaneous apoptosis of Grasp55-deficient leukemic cells correlated with increased sensitivity of the cells to glucose deprivation. These results show that Grasp55 plays a role in Myc-transformed hematopoietic cells but not in normal hematopoietic cells in vivo.
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Affiliation(s)
- Anne-Laure Bailly
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Julien M P Grenier
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Amandine Cartier-Michaud
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Florence Bardin
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Marielle Balzano
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Armelle Goubard
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Jean-Claude Lissitzky
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Maria De Grandis
- Etablissement Français du Sang PACA Corse, Biologie des Groupes Sanguins, UMR 7268, Aix Marseille Université, CNRS, Marseille 13005, France
| | - Stéphane J C Mancini
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Arnauld Serge
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
| | - Michel Aurrand-Lions
- Equipe Labellisée Ligue contre le Cancer, Aix Marseille University, CNRS, INSERM, Institut Paoli-Calmettes, Cancerology Research Center of Marseille, Marseille 13009, France; and
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19
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Czabanka M, Petrilli LL, Elvers-Hornung S, Bieback K, Albert Imhof B, Vajkoczy P, Vinci M. Junctional Adhesion Molecule-C Mediates the Recruitment of Embryonic-Endothelial Progenitor Cells to the Perivascular Niche during Tumor Angiogenesis. Int J Mol Sci 2020; 21:ijms21041209. [PMID: 32054130 PMCID: PMC7072851 DOI: 10.3390/ijms21041209] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 02/07/2020] [Indexed: 11/29/2022] Open
Abstract
The homing of Endothelial Progenitor Cells (EPCs) to tumor angiogenic sites has been described as a multistep process, involving adhesion, migration, incorporation and sprouting, for which the underlying molecular and cellular mechanisms are yet to be fully defined. Here, we studied the expression of Junctional Adhesion Molecule-C (JAM-C) by EPCs and its role in EPC homing to tumor angiogenic vessels. For this, we used mouse embryonic-Endothelial Progenitor Cells (e-EPCs), intravital multi-fluorescence microscopy techniques and the dorsal skin-fold chamber model. JAM-C was found to be expressed by e-EPCs and endothelial cells. Blocking JAM-C did not affect adhesion of e-EPCs to endothelial monolayers in vitro but, interestingly, it did reduce their adhesion to tumor endothelium in vivo. The most striking effect of JAM-C blocking was on tube formation on matrigel in vitro and the incorporation and sprouting of e-EPCs to tumor endothelium in vivo. Our results demonstrate that JAM-C mediates e-EPC recruitment to tumor angiogenic sites, i.e., coordinated homing of EPCs to the perivascular niche, where they cluster and interact with tumor blood vessels. This suggests that JAM-C plays a critical role in the process of vascular assembly and may represent a potential therapeutic target to control tumor angiogenesis.
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Affiliation(s)
- Marcus Czabanka
- Department of Neurosurgery, Universitätsmedizin Charitè, 10117 Berlin, Germany;
- Department of Neurosurgery Medical Faculty of the University of Heidelberg, 68167 Mannheim, Germany;
| | - Lucia Lisa Petrilli
- Department of Onco-haematology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital – IRCCS, 00146 Rome, Italy;
| | - Susanne Elvers-Hornung
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Fred Cross Blood Donor Service Baden-Württemberg – Hessen, 68167 Mannheim, Germany (K.B.)
| | - Karen Bieback
- Institute of Transfusion Medicine and Immunology, Medical Faculty Mannheim, Heidelberg University, German Fred Cross Blood Donor Service Baden-Württemberg – Hessen, 68167 Mannheim, Germany (K.B.)
| | - Beat Albert Imhof
- Department of Pathology and Immunology, Medical Faculty, Centre Medical Universitaire (CMU), University of Geneva, 1206 Geneva, Switzerland;
| | - Peter Vajkoczy
- Department of Neurosurgery, Universitätsmedizin Charitè, 10117 Berlin, Germany;
- Department of Neurosurgery Medical Faculty of the University of Heidelberg, 68167 Mannheim, Germany;
- Correspondence: ; Tel.: +49-30450560-002
| | - Maria Vinci
- Department of Neurosurgery Medical Faculty of the University of Heidelberg, 68167 Mannheim, Germany;
- Department of Onco-haematology, Cell and Gene Therapy, Bambino Gesù Children’s Hospital – IRCCS, 00146 Rome, Italy;
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20
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Kobayashi I, Kobayashi-Sun J, Hirakawa Y, Ouchi M, Yasuda K, Kamei H, Fukuhara S, Yamaguchi M. Dual role of Jam3b in early hematopoietic and vascular development. Development 2019; 147:dev.181040. [DOI: 10.1242/dev.181040] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 12/11/2019] [Indexed: 12/23/2022]
Abstract
In order to efficiently derive hematopoietic stem cells (HSCs) from pluripotent precursors, it is crucial to understand how mesodermal cells acquire hematopoietic and endothelial identities, two divergent, but closely related cell fates. Although Npas4 has been recently identified as a conserved master regulator of hemato-vascular development, the molecular mechanisms underlying cell fate divergence between hematopoietic and vascular endothelial cells are still unclear. Here, we show in zebrafish that mesodermal cell differentiation into hematopoietic and vascular endothelial cells is regulated by Junctional adhesion molecule 3b (Jam3b) via two independent signaling pathways. Mutation of jam3b led to a reduction in npas4l expression in the posterior lateral plate mesoderm and defects in both hematopoietic and vascular development. Mechanistically, we uncover that Jam3b promotes endothelial specification by regulating npas4l expression through repression of the Rap1a-Erk signaling cascade. Jam3b subsequently promotes hematopoietic development, including HSCs, by regulating lrrc15 expression in endothelial precursors through the activation of an integrin-dependent signaling cascade. Our data provide insight into the divergent mechanisms for instructing hematopoietic or vascular fates from mesodermal cells.
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Affiliation(s)
- Isao Kobayashi
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Ishikawa, Japan
| | - Jingjing Kobayashi-Sun
- Division of Life Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa, Japan
| | - Yuto Hirakawa
- Division of Life Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa, Japan
| | - Madoka Ouchi
- Division of Life Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa, Japan
| | - Koyuki Yasuda
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Ishikawa, Japan
| | - Hiroyasu Kamei
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Ishikawa, Japan
| | - Shigetomo Fukuhara
- Department of Molecular Pathophysiology, Institute for Advanced Medical Sciences, Nippon Medical School, Kanagawa, Japan
| | - Masaaki Yamaguchi
- Faculty of Biological Science and Technology, Institute of Science and Engineering, Kanazawa University, Ishikawa, Japan
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21
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von Bonin M, Moll K, Kramer M, Oelschlägel U, Wermke M, Röllig C, Thiede C, Ehninger G, Krämer A, Müller-Tidow C, Mitroulis I, Bornhäuser M. JAM-C Expression as a Biomarker to Predict Outcome of Patients with Acute Myeloid Leukemia-Letter. Cancer Res 2018; 78:6339-6341. [PMID: 30333115 DOI: 10.1158/0008-5472.can-18-0642] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/07/2018] [Accepted: 08/22/2018] [Indexed: 11/16/2022]
Affiliation(s)
- Malte von Bonin
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany. .,German Cancer Consortium (DKTK), Partner Site Dresden, Dresden, Germany.,German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Katharina Moll
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Michael Kramer
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Uta Oelschlägel
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Martin Wermke
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany.,Early Clinical Trial Unit (ECTU), University Cancer Centre, Dresden, Germany
| | - Christoph Röllig
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Christian Thiede
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Gerhard Ehninger
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany
| | - Alwin Krämer
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany.,Clinical Cooperation Unit Molecular Hematology/Oncology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Carsten Müller-Tidow
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
| | - Ioannis Mitroulis
- Institute of Clinical Chemistry and Laboratory Medicine, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner site Dresden, Dresden, Germany
| | - Martin Bornhäuser
- Medical Clinic I, University Hospital Carl Gustav Carus, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner site Dresden, Dresden, Germany
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22
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Tietz S, Périnat T, Greene G, Enzmann G, Deutsch U, Adams R, Imhof B, Aurrand-Lions M, Engelhardt B. Lack of junctional adhesion molecule (JAM)-B ameliorates experimental autoimmune encephalomyelitis. Brain Behav Immun 2018; 73:3-20. [PMID: 29920328 DOI: 10.1016/j.bbi.2018.06.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/11/2018] [Accepted: 06/15/2018] [Indexed: 12/28/2022] Open
Abstract
In multiple sclerosis (MS) and its animal model experimental autoimmune encephalomyelitis (EAE) autoaggressive CD4+ T cells cross the blood-brain barrier (BBB) and cause neuroinflammation. Therapeutic targeting of CD4+ T-cell trafficking into the CNS by blocking α4-integrins has proven beneficial for the treatment of MS but comes with associated risks, probably due to blocking CD8+ T cell mediated CNS immune surveillance. Our recent observations show that CD8+ T cells also rely on α4β1-integrins to cross the BBB. Besides vascular cell adhesion molecule-1 (VCAM-1), we identified junctional adhesion molecule-B (JAM-B) as a novel vascular α4β1-integrin ligand involved in CD8+ T-cell migration across the BBB. This prompted us to investigate, if JAM-B also mediates CD4+ T-cell migration across the BBB. We first ensured that encephalitogenic T cells can bind to JAM-B in vitro and next compared EAE pathogenesis in JAM-B-/- C57BL/6J mice and their wild-type littermates. Following immunization with MOGaa35-55 peptide, JAM-B-/- mice developed ameliorated EAE compared to their wild-type littermates. At the same time, we isolated higher numbers of CD45+ infiltrating immune cells from the CNS of JAM-B-/- C57BL/6J mice suffering from EAE. Immunofluorescence staining revealed that the majority of CD45+ inflammatory cells accumulated in the leptomeningeal and perivascular spaces of the CNS behind the BBB but do not gain access to the CNS parenchyma. Trapping of CNS inflammatory cells was not due to increased inflammatory cell proliferation. Neither a loss of BBB integrity or BBB polarity potentially affecting local chemokine gradients nor a lack of focal gelatinase activation required for CNS parenchymal immune cell entry across the glia limitans could be detected in JAM-B-/- mice. Lack of a role for JAM-B in the effector phase of EAE was supported by the observation that we did not detect any role for JAM-B in EAE pathogenesis, when EAE was elicited by in vitro activated MOG aa35-55-specific CD4+ effector T cells. On the other hand, we also failed to demonstrate any role of JAM-B in in vivo priming, proliferation or polarization of MOGaa35-55-specific CD4+ T cells in peripheral immune organs. Finally, our study excludes expression of and thus a role for JAM-B on peripheral and CNS infiltrating myeloid cells. Taken together, although endothelial JAM-B is not required for immune cell trafficking across the BBB in EAE, in its absence accumulation of inflammatory cells mainly in CNS leptomeningeal spaces leads to amelioration of EAE.
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MESH Headings
- Animals
- Blood-Brain Barrier/metabolism
- CD8-Positive T-Lymphocytes/metabolism
- Cell Movement/physiology
- Central Nervous System/metabolism
- Central Nervous System/physiology
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/physiopathology
- Endothelium, Vascular/metabolism
- Female
- Integrin alpha4beta1/metabolism
- Junctional Adhesion Molecule B/genetics
- Junctional Adhesion Molecule B/metabolism
- Junctional Adhesion Molecule B/physiology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Multiple Sclerosis/metabolism
- Multiple Sclerosis/physiopathology
- Myelin-Oligodendrocyte Glycoprotein/pharmacology
- Myeloid Cells/metabolism
- Myeloid Cells/physiology
- Tight Junctions/metabolism
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Affiliation(s)
- Silvia Tietz
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Therese Périnat
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Gretchen Greene
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Gaby Enzmann
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Urban Deutsch
- Theodor Kocher Institute, University of Bern, Bern, Switzerland
| | - Ralf Adams
- Department of Tissue Morphogenesis, Max Planck Institute for Molecular Biomedicine, Münster, Germany
| | - Beat Imhof
- Department of Pathology and Immunology, University of Geneva, CMU Geneva, Switzerland
| | - Michel Aurrand-Lions
- Centre de Recherche en Cancerologie de Marseille, INSERM, CNRS, Aix-Marseille University, Marseille, France
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23
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Heterocellular molecular contacts in the mammalian stem cell niche. Eur J Cell Biol 2018; 97:442-461. [PMID: 30025618 DOI: 10.1016/j.ejcb.2018.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 07/03/2018] [Indexed: 12/16/2022] Open
Abstract
Adult tissue homeostasis and repair relies on prompt and appropriate intervention by tissue-specific adult stem cells (SCs). SCs have the ability to self-renew; upon appropriate stimulation, they proliferate and give rise to specialized cells. An array of environmental signals is important for maintenance of the SC pool and SC survival, behavior, and fate. Within this special microenvironment, commonly known as the stem cell niche (SCN), SC behavior and fate are regulated by soluble molecules and direct molecular contacts via adhesion molecules providing connections to local supporting cells and the extracellular matrix. Besides the extensively discussed array of soluble molecules, the expression of adhesion molecules and molecular contacts is another fundamental mechanism regulating niche occupancy and SC mobilization upon activation. Some adhesion molecules are differentially expressed and have tissue-specific consequences, likely reflecting the structural differences in niche composition and design, especially the presence or absence of a stromal counterpart. However, the distribution and identity of intercellular molecular contacts for adhesion and adhesion-mediated signaling within stromal and non-stromal SCN have not been thoroughly studied. This review highlights common details or significant differences in cell-to-cell contacts within representative stromal and non-stromal niches that could unveil new standpoints for stem cell biology and therapy.
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24
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Abstract
PURPOSE OF REVIEW Hematopoietic stem cells (HSCs) and progenitors are tasked with maintaining hematopoietic homeostasis in the face of numerous insults and challenges, including infection, inflammation, and exsanguination. HSCs possess the remarkable ability to reconstitute the entire hematopoietic system of an organism whose own hematopoietic system has been ablated. This ability is exploited routinely in the clinic via HSC transplantation (HSCT). Here, we focus on the physiological and molecular bottlenecks overcome by HSCs during transplantation. RECENT FINDINGS During transplantation, HSCs encounter a damaged bone marrow niche, characterized molecularly by increases in oxygen concentrations and an altered cytokine milieu. New mechanisms and pathways have been recently implicated during HSCT, including transplanted HSC-dependent secretion of conditioning molecules that facilitate engraftment and pathways that protect HSCs from perturbed organelle homeostasis. SUMMARY Better understanding the molecular processes HSCs employ to withstand the stress of transplant will illuminate novel targets for further improving conditioning regimens and engraftment during HSCT.
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25
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De Grandis M, Bardin F, Fauriat C, Zemmour C, El-Kaoutari A, Sergé A, Granjeaud S, Pouyet L, Montersino C, Chretien AS, Mozziconacci MJ, Castellano R, Bidaut G, Boher JM, Collette Y, Mancini SJC, Vey N, Aurrand-Lions M. JAM-C Identifies Src Family Kinase-Activated Leukemia-Initiating Cells and Predicts Poor Prognosis in Acute Myeloid Leukemia. Cancer Res 2017; 77:6627-6640. [PMID: 28972073 DOI: 10.1158/0008-5472.can-17-1223] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 08/24/2017] [Accepted: 09/25/2017] [Indexed: 11/16/2022]
Abstract
Acute myeloid leukemia (AML) originates from hematopoietic stem and progenitor cells that acquire somatic mutations, leading to disease and clonogenic evolution. AML is characterized by accumulation of immature myeloid cells in the bone marrow and phenotypic cellular heterogeneity reflective of normal hematopoietic differentiation. Here, we show that JAM-C expression defines a subset of leukemic cells endowed with leukemia-initiating cell activity (LIC). Stratification of de novo AML patients at diagnosis based on JAM-C-expressing cells frequencies in the blood served as an independent prognostic marker for disease outcome. Using publicly available leukemic stem cell (LSC) gene expression profiles and gene expression data generated from JAM-C-expressing leukemic cells, we defined a single cell core gene expression signature correlated to JAM-C expression that reveals LSC heterogeneity. Finally, we demonstrated that JAM-C controls Src family kinase (SFK) activation in LSC and that LIC with exacerbated SFK activation was uniquely found within the JAM-C-expressing LSC compartment. Cancer Res; 77(23); 6627-40. ©2017 AACR.
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Affiliation(s)
- Maria De Grandis
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Florence Bardin
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Cyril Fauriat
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Christophe Zemmour
- Unité de Biostatistique et de Méthodologie, Département de la Recherche Clinique et de l'Innovation, Institut Paoli-Calmettes, Marseille, France
| | | | - Arnauld Sergé
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Samuel Granjeaud
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Laurent Pouyet
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Camille Montersino
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Anne-Sophie Chretien
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Marie-Joelle Mozziconacci
- Département de Biopathologie, Cytogénétique et Biologie Moléculaire, Institut Paoli-Calmettes, Marseille, France
| | - Remy Castellano
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Ghislain Bidaut
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Jean-Marie Boher
- Unité de Biostatistique et de Méthodologie, Département de la Recherche Clinique et de l'Innovation, Institut Paoli-Calmettes, Marseille, France
- Aix Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | - Yves Collette
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Stéphane J C Mancini
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
| | - Norbert Vey
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France
- Département d'Hématologie, Institut Paoli-Calmettes, Marseille, France
| | - Michel Aurrand-Lions
- Aix Marseille Univ, CNRS, INSERM, Institut Paoli-Calmettes, CRCM, Marseille, France.
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26
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Roch A, Giger S, Girotra M, Campos V, Vannini N, Naveiras O, Gobaa S, Lutolf MP. Single-cell analyses identify bioengineered niches for enhanced maintenance of hematopoietic stem cells. Nat Commun 2017; 8:221. [PMID: 28790449 PMCID: PMC5548907 DOI: 10.1038/s41467-017-00291-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 06/18/2017] [Indexed: 11/13/2022] Open
Abstract
The in vitro expansion of long-term hematopoietic stem cells (HSCs) remains a substantial challenge, largely because of our limited understanding of the mechanisms that control HSC fate choices. Using single-cell multigene expression analysis and time-lapse microscopy, here we define gene expression signatures and cell cycle hallmarks of murine HSCs and the earliest multipotent progenitors (MPPs), and analyze systematically single HSC fate choices in culture. Our analysis revealed twelve differentially expressed genes marking the quiescent HSC state, including four genes encoding cell–cell interaction signals in the niche. Under basal culture conditions, most HSCs rapidly commit to become early MPPs. In contrast, when we present ligands of the identified niche components such as JamC or Esam within artificial niches, HSC cycling is reduced and long-term multipotency in vivo is maintained. Our approach to bioengineer artificial niches should be useful in other stem cell systems. Haematopoietic stem cell (HSC) self-renewal is not sufficiently understood to recapitulate in vitro. Here, the authors generate gene signature and cell cycle hallmarks of single murine HSCs, and use identified endothelial receptors Esam and JamC as substrates to enhance HSC growth in engineered niches.
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Affiliation(s)
- Aline Roch
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Sonja Giger
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Mukul Girotra
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Vasco Campos
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Nicola Vannini
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Olaia Naveiras
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland.,Department of Medicine, Centre Hospitaler Universitaire Vaudois (CHUV), CH-1015, Lausanne, Switzerland
| | - Samy Gobaa
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Matthias P Lutolf
- Institute of Bioengineering, School of Life Sciences and School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland. .,Institute of Chemical Sciences and Engineering, School of Basic Sciences, EPFL, CH-1015, Lausanne, Switzerland.
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27
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Lian S, Meng L, Xing X, Yang Y, Qu L, Shou C. PRL-3 promotes cell adhesion by interacting with JAM2 in colon cancer. Oncol Lett 2016; 12:1661-1666. [PMID: 27588115 PMCID: PMC4998106 DOI: 10.3892/ol.2016.4836] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 03/08/2016] [Indexed: 01/29/2023] Open
Abstract
Phosphatase of regenerating liver-3 (PRL-3), also termed PTP4A3, is a metastasis-related protein tyrosine phosphatase. Its expression levels are significantly correlated with the progression and survival of a wide range of malignant tumors. However, the mechanism by which PRL-3 promotes tumor invasion and metastasis is not clear. In the present study, the functions of PRL-3 were systemically analyzed in the key events of metastasis including, motility and adhesion. A cell wounding assay, cell spread assay and cell-matrix adhesion assay were carried out to analyze the cell movement and cell adhesion ability of colon cancer, immunoprecipitation and immunofluorescence assay was confirmed the interaction of PRL-3 and JAM2. It was demonstrated that PRL-3 promoted the motility of Flp-In-293 and LoVo colon cancer cells and increased the distribution of cell skeleton proteins on the cell protrusions. In addition, stably expressing PRL-3 reduced the spreading speed of colon cancer cells and cell adhesion on uncoated, fibronectin-coated and collagen I-coated plates. Mechanistically, junction adhesion molecular 2 (JAM2) was identified as a novel interacting protein of PRL-3. The findings of the present study revealed the roles of PRL-3 in cancer cell motility and adhesion process, and provided information on the possibility of PRL-3 increase cell-cell adhesion by associating with JAM2.
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Affiliation(s)
- Shenyi Lian
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing 100142, P.R. China
| | - Lin Meng
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing 100142, P.R. China
| | - Xiaofang Xing
- Department of Gastrointestinal Translational Research, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing 100142, P.R. China
| | - Yongyong Yang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing 100142, P.R. China
| | - Like Qu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing 100142, P.R. China
| | - Chengchao Shou
- Department of Biochemistry and Molecular Biology, Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing 100142, P.R. China
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28
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Coppin E, De Grandis M, Pandolfi PP, Arcangeli ML, Aurrand-Lions M, Nunès JA. Dok1 and Dok2 Proteins Regulate Cell Cycle in Hematopoietic Stem and Progenitor Cells. THE JOURNAL OF IMMUNOLOGY 2016; 196:4110-21. [DOI: 10.4049/jimmunol.1501037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 03/11/2016] [Indexed: 01/27/2023]
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29
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Chang CH, Hale SJ, Cox CV, Blair A, Kronsteiner B, Grabowska R, Zhang Y, Cook D, Khoo CP, Schrader JB, Kabuga SB, Martin-Rendon E, Watt SM. Junctional Adhesion Molecule-A Is Highly Expressed on Human Hematopoietic Repopulating Cells and Associates with the Key Hematopoietic Chemokine Receptor CXCR4. Stem Cells 2016; 34:1664-78. [PMID: 26866290 DOI: 10.1002/stem.2340] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 01/11/2016] [Indexed: 12/16/2022]
Abstract
Hematopoietic stem/progenitor cells (HSPCs) reside in specialized bone marrow microenvironmental niches, with vascular elements (endothelial/mesenchymal stromal cells) and CXCR4-CXCL12 interactions playing particularly important roles for HSPC entry, retention, and maintenance. The functional effects of CXCL12 are dependent on its local concentration and rely on complex HSPC-niche interactions. Two Junctional Adhesion Molecule family proteins, Junctional Adhesion Molecule-B (JAM)-B and JAM-C, are reported to mediate HSPC-stromal cell interactions, which in turn regulate CXCL12 production by mesenchymal stromal cells (MSCs). Here, we demonstrate that another JAM family member, JAM-A, is most highly expressed on human hematopoietic stem cells with in vivo repopulating activity (p < .01 for JAM-A(high) compared to JAM-A(Int or Low) cord blood CD34(+) cells). JAM-A blockade, silencing, and overexpression show that JAM-A contributes significantly (p < .05) to the adhesion of human HSPCs to IL-1β activated human bone marrow sinusoidal endothelium. Further studies highlight a novel association of JAM-A with CXCR4, with these molecules moving to the leading edge of the cell upon presentation with CXCL12 (p < .05 compared to no CXCL12). Therefore, we hypothesize that JAM family members differentially regulate CXCR4 function and CXCL12 secretion in the bone marrow niche. Stem Cells 2016;34:1664-1678.
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Affiliation(s)
- Chao-Hui Chang
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Sarah J Hale
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Charlotte V Cox
- Bristol Institute for Transfusion Sciences, NHS Blood and Transplant, Bristol, United Kingdom.,Cancer Research School of Cellular and Molecular Medicine, University of Bristol, Bristol, United Kingdom
| | - Allison Blair
- Bristol Institute for Transfusion Sciences, NHS Blood and Transplant, Bristol, United Kingdom.,Cancer Research School of Cellular and Molecular Medicine, University of Bristol, Bristol, United Kingdom
| | - Barbara Kronsteiner
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Rita Grabowska
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Youyi Zhang
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - David Cook
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Cheen P Khoo
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Jack B Schrader
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Suranahi Buglass Kabuga
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Enca Martin-Rendon
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
| | - Suzanne M Watt
- Nuffield Division of Clinical Laboratory Medicine, Radcliffe Department of Medicine, Stem Cell Research, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.,Radcliffe Department of Medicine, Stem Cell Research, NHS Blood and Transplant, John Radcliffe Hospital, Oxford, United Kingdom
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30
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Stelzer IA, Mori M, DeMayo F, Lydon J, Arck PC, Solano ME. Differential mouse-strain specific expression of Junctional Adhesion Molecule (JAM)-B in placental structures. Cell Adh Migr 2016; 10:2-17. [PMID: 26914234 DOI: 10.1080/19336918.2015.1118605] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The junctional adhesion molecule (JAM)-B, a member of the immunoglobulin superfamily, is involved in stabilization of interendothelial cell-cell contacts, formation of vascular tubes, homeostasis of stem cell niches and promotion of leukocyte adhesion and transmigration. In the human placenta, JAM-B protein is abundant and mRNA transcripts are enriched in first-trimester extravillous trophoblast in comparison to the villous trophoblast. We here aimed to elucidate the yet unexplored spatio-temporal expression of JAM-B in the mouse placenta. We investigated and semi-quantified JAM-B protein expression by immunohistochemistry in early post-implantation si tes and in mid- to late gestation placentae of various murine mating combinations. Surprisingly, the endothelium of the placental labyrinth was devoid of JAM-B expression. JAM-B was mainly present in spongiotrophoblast cells of the junctional zone, as well as in the fetal vessels of the chorionic plate, the umbilical cord and in maternal myometrial smooth muscle. We observed a strain-specific placental increase of JAM-B protein expression from mid- to late gestation in Balb/c-mated C57BL/6 females, which was absent in DBA/2J-mated Balb/c females. Due to the essential role of progesterone during gestation, we further assessed a possible modulation of JAM-B in mid-gestational placentae deficient in the progesterone receptor (Pgr(-/-)) and observed an increased expression of JAM-B in Pgr(-/-) placentae, compared to Pgr(+/+) tissue samples. We propose that JAM-B is an as yet underappreciated trophoblast lineage-specific protein, which is modulated via the progesterone receptor and shows unique strain-specific kinetics. Future work is needed to elucidate its possible contribution to placental processes necessary to ensuring its integrity, ultimately facilitating placental development and fetal growth.
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Affiliation(s)
- Ina Annelies Stelzer
- a Laboratory for Exp. Feto-Maternal Medicine, Department of Obstetrics and Prenatal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | - Mayumi Mori
- a Laboratory for Exp. Feto-Maternal Medicine, Department of Obstetrics and Prenatal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | | | - John Lydon
- b Baylor College of Medicine , Houston , TX , USA
| | - Petra Clara Arck
- a Laboratory for Exp. Feto-Maternal Medicine, Department of Obstetrics and Prenatal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg , Germany
| | - Maria Emilia Solano
- a Laboratory for Exp. Feto-Maternal Medicine, Department of Obstetrics and Prenatal Medicine, University Medical Center Hamburg-Eppendorf , Hamburg , Germany
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31
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De Grandis M, Lhoumeau AC, Mancini SJC, Aurrand-Lions M. Adhesion receptors involved in HSC and early-B cell interactions with bone marrow microenvironment. Cell Mol Life Sci 2016; 73:687-703. [PMID: 26495446 PMCID: PMC11108274 DOI: 10.1007/s00018-015-2064-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 09/16/2015] [Accepted: 10/08/2015] [Indexed: 02/06/2023]
Abstract
Hematopoiesis takes place in the bone marrow of adult mammals and is the process by which blood cells are replenished every day throughout life. Differentiation of hematopoietic cells occurs in a stepwise manner through intermediates of differentiation that could be phenotypically identified. This has allowed establishing hematopoietic cell classification with hematopoietic stem cells (HSCs) at the top of the hierarchy. HSCs are mostly quiescent and serve as a reservoir for maintenance of lifelong hematopoiesis. Over recent years, it has become increasingly clear that HSC quiescence is not only due to intrinsic properties, but is also mediated by cognate interactions between HSCs and surrounding cells within micro-anatomical sites called “niches”. This hematopoietic/stromal crosstalk model also applies to more mature progenitors such as B cell progenitors, which are thought to reside in distinct “niches”. This prompted many research teams to search for specific molecular mechanisms supporting leuko-stromal crosstalk in the bone marrow and acting at specific stage of differentiation to regulate hematopoietic homeostasis. Here, we review recent data on adhesion mechanisms involved in HSCs and B cell progenitors interactions with surrounding bone marrow stromal cells.
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Affiliation(s)
- Maria De Grandis
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, Inserm U1068, CNRS UMR7258, Aix-Marseille Université UM105, Marseille, France
| | - Anne-Catherine Lhoumeau
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, Inserm U1068, CNRS UMR7258, Aix-Marseille Université UM105, Marseille, France
| | - Stéphane J. C. Mancini
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, Inserm U1068, CNRS UMR7258, Aix-Marseille Université UM105, Marseille, France
| | - Michel Aurrand-Lions
- Centre de Recherche en Cancérologie de Marseille, Institut Paoli-Calmettes, Inserm U1068, CNRS UMR7258, Aix-Marseille Université UM105, Marseille, France
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Matsui H, Dorigo A, Buchberger A, Hocking JC, Distel M, Köster RW. Zebrafishjam-b2Gal4-enhancer trap line recapitulates endogenousjam-b2expression in extraocular muscles. Dev Dyn 2015; 244:1574-80. [DOI: 10.1002/dvdy.24347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 06/26/2015] [Accepted: 09/08/2015] [Indexed: 12/17/2022] Open
Affiliation(s)
- Hideaki Matsui
- Division of Molecular and Cellular Neurobiology, Zoological Institute; Technical University Braunschweig; Braunschweig Germany
- Department of Neuroscience, Section of Integrative Physiology, Faculty of Medicine; University of Miyazaki; Miyazaki Japan
| | - Alessandro Dorigo
- Division of Molecular and Cellular Neurobiology, Zoological Institute; Technical University Braunschweig; Braunschweig Germany
| | - Astrid Buchberger
- Division of Molecular and Cellular Neurobiology, Zoological Institute; Technical University Braunschweig; Braunschweig Germany
| | - Jennifer C. Hocking
- Division of Molecular and Cellular Neurobiology, Zoological Institute; Technical University Braunschweig; Braunschweig Germany
| | - Martin Distel
- Division of Molecular and Cellular Neurobiology, Zoological Institute; Technical University Braunschweig; Braunschweig Germany
| | - Reinhard W. Köster
- Division of Molecular and Cellular Neurobiology, Zoological Institute; Technical University Braunschweig; Braunschweig Germany
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Polisetti N, Zenkel M, Menzel-Severing J, Kruse FE, Schlötzer-Schrehardt U. Cell Adhesion Molecules and Stem Cell-Niche-Interactions in the Limbal Stem Cell Niche. Stem Cells 2015; 34:203-19. [PMID: 26349477 DOI: 10.1002/stem.2191] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 08/02/2015] [Indexed: 12/19/2022]
Abstract
Interactions between stem cells and their microenvironment are critical for regulation and maintenance of stem cell function. To elucidate the molecular interactions within the human limbal epithelial stem/progenitor cell (LEPC) niche, which is essential for maintaining corneal transparency and vision, we performed a comprehensive expression analysis of cell adhesion molecules (CAMs) using custom-made quantitative real-time polymerase chain reaction (qRT-PCR) arrays and laser capture-microdissected LEPC clusters, comprising LEPCs, melanocytes, mesenchymal cells, and transmigrating immune cells. We show that LEPCs are anchored to their supporting basement membrane by the laminin receptors α3β1 and α6β4 integrin and the dystroglycan complex, while intercellular contacts between LEPCs and melanocytes are mediated by N-, P-, and E-cadherin together with L1-CAM, a member of the immunoglobulin superfamily (Ig)CAMs. In addition to the LEPC-associated heparan sulfate proteoglycans syndecan-2, glypican-3, and glypican-4, the IgCAM members ICAM-1 and VCAM-1 were found to be variably expressed on LEPCs and associated niche cells and to be dynamically regulated in response to chemokines such as interferon-γ to enhance interactions with immune cells. Moreover, junctional adhesion molecule JAM-C accumulating in the subepithelial limbal matrix, appeared to be involved in recruitment of immune cells, while mesenchymal stromal cells appeared to use the nephronectin receptor integrin α8 for approaching the limbal basement membrane. In summary, we identified a novel combination of cell surface receptors that may regulate both stable and dynamic cell-matrix and cell-cell interactions within the limbal niche. The findings provide a solid foundation for further functional studies and for advancement of our current therapeutic strategies for ocular surface reconstruction.
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Affiliation(s)
- Naresh Polisetti
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Matthias Zenkel
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Johannes Menzel-Severing
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Friedrich E Kruse
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
| | - Ursula Schlötzer-Schrehardt
- Department of Ophthalmology, University Hospital Erlangen, Friedrich-Alexander-University of Erlangen-Nürnberg, Erlangen, Germany
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