1
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Wang H, Arulraj T, Anbari S, Popel AS. Quantitative systems pharmacology modeling of macrophage-targeted therapy combined with PD-L1 inhibition in advanced NSCLC. Clin Transl Sci 2024; 17:e13811. [PMID: 38814167 PMCID: PMC11138134 DOI: 10.1111/cts.13811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 03/01/2024] [Accepted: 04/12/2024] [Indexed: 05/31/2024] Open
Abstract
Immune checkpoint inhibitors remained the standard-of-care treatment for advanced non-small cell lung cancer (NSCLC) for the past decade. In unselected patients, anti-PD-(L)1 monotherapy achieved an overall response rate of about 20%. In this analysis, we developed a pharmacokinetic and pharmacodynamic module for our previously calibrated quantitative systems pharmacology model (QSP) to simulate the effectiveness of macrophage-targeted therapies in combination with PD-L1 inhibition in advanced NSCLC. By conducting in silico clinical trials, the model confirmed that anti-CD47 treatment is not an optimal option of second- and later-line treatment for advanced NSCLC resistant to PD-(L)1 blockade. Furthermore, the model predicted that inhibition of macrophage recruitment, such as using CCR2 inhibitors, can potentially improve tumor size reduction when combined with anti-PD-(L)1 therapy, especially in patients who are likely to respond to anti-PD-(L)1 monotherapy and those with a high level of tumor-associated macrophages. Here, we demonstrate the application of the QSP platform on predicting the effectiveness of novel drug combinations involving immune checkpoint inhibitors based on preclinical or early-stage clinical trial data.
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Affiliation(s)
- Hanwen Wang
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Theinmozhi Arulraj
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Samira Anbari
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Aleksander S. Popel
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMarylandUSA
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer CenterJohns Hopkins University School of MedicineBaltimoreMarylandUSA
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2
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Yoon E, Kim TY, Kim H, Cho D. Evorpacept-Induced Interference and Application of a Novel Mitigation Agent, Evo-NR, in Pretransfusion Testing. Transfus Med Hemother 2024; 51:185-192. [PMID: 38867811 PMCID: PMC11166403 DOI: 10.1159/000534273] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 09/22/2023] [Indexed: 06/14/2024] Open
Abstract
Introduction Evorpacept is a CD47-blocking agent currently being developed for the treatment of various cancers. Interference by evorpacept in pretransfusion compatibility testing has been reported at limited plasma concentrations. Although various mitigation strategies have been proposed, none are practical. This in vitro study assessed evorpacept-induced interference at extended concentrations and investigated the capability of a novel mitigation agent, Evo-NR. Methods Antibody screening tests were performed on evorpacept-spiked plasma with (anti-E and anti-Jka) or without alloantibodies at evorpacept concentrations up to 2,000 μg/mL using manual gel cards and automated analyzers. Evorpacept-coated red blood cells (RBCs) (rr [ce/ce], Fy[a+b-], S-s+) were tested by direct antiglobulin testing (DAT) and antigen typing using anti-Fyb and anti-S reagents at indirect antiglobulin testing (IAT) phase. Evo-NR was used to resolve the interference in plasma and RBC samples. Flow cytometry was used to assess the mitigation effects. Results Evorpacept-spiked plasma showed panreactive interference in antibody screening tests using manual gel cards (2+ to 3+) and automated analyzers (4+). A carryover effect was also observed in the automated analyzers. The use of a 3- to 6-fold molar excess of Evo-NR effectively resolved the interference in the plasma and enabled accurate alloantibody identification. Although the reduction in evorpacept binding to RBCs was identified via flow cytometry, Evo-NR was incapable of resolving the serologic interference observed in DAT and antigen typing at IAT phase. Discussion Evorpacept showed constant panreactivity and a carryover effect at high concentrations. Evo-NR successfully resolved the interference in the plasma samples and could be considered a practical and efficient mitigation solution. Implementation of Evo-NR has the potential to support RBC transfusion for patients undergoing evorpacept treatment.
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Affiliation(s)
- Eungjun Yoon
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Tae Yeul Kim
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyungsuk Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Duck Cho
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea
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3
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Le T, Ferling I, Qiu L, Nabaile C, Assunção L, Roskelley CD, Grinstein S, Freeman SA. Redistribution of the glycocalyx exposes phagocytic determinants on apoptotic cells. Dev Cell 2024; 59:853-868.e7. [PMID: 38359833 DOI: 10.1016/j.devcel.2024.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 11/08/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
Phagocytes remove dead and dying cells by engaging "eat-me" ligands such as phosphatidylserine (PtdSer) on the surface of apoptotic targets. However, PtdSer is obscured by the bulky exofacial glycocalyx, which also exposes ligands that activate "don't-eat-me" receptors such as Siglecs. Clearly, unshielding the juxtamembrane "eat-me" ligands is required for the successful engulfment of apoptotic cells, but the mechanisms underlying this process have not been described. Using human and murine cells, we find that apoptosis-induced retraction and weakening of the cytoskeleton that anchors transmembrane proteins cause an inhomogeneous redistribution of the glycocalyx: actin-depleted blebs emerge, lacking the glycocalyx, while the rest of the apoptotic cell body retains sufficient actin to tether the glycocalyx in place. Thus, apoptotic blebs can be engaged by phagocytes and are targeted for engulfment. Therefore, in cells with an elaborate glycocalyx, such as mucinous cancer cells, this "don't-come-close-to-me" barrier must be removed to enable clearance by phagocytosis.
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Affiliation(s)
- Trieu Le
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Iuliia Ferling
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Lanhui Qiu
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Clement Nabaile
- Department of Learning and Research in Biology, Ecole Normale Supérieure Paris-Saclay, Gif-sur-Yvette, France
| | - Leonardo Assunção
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Calvin D Roskelley
- Department of Cellular and Physiological Sciences, the Life Sciences Institute, University of British Columbia, Vancouver, BC V6T 1Z3, Canada
| | - Sergio Grinstein
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Spencer A Freeman
- Program in Cell Biology, Hospital for Sick Children, Toronto, ON M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, ON M5S 1A8, Canada.
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4
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Floch A, Galochkina T, Pirenne F, Tournamille C, de Brevern AG. Molecular dynamics of the human RhD and RhAG blood group proteins. Front Chem 2024; 12:1360392. [PMID: 38566898 PMCID: PMC10985258 DOI: 10.3389/fchem.2024.1360392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 03/07/2024] [Indexed: 04/04/2024] Open
Abstract
Introduction: Blood group antigens of the RH system (formerly known as "Rhesus") play an important role in transfusion medicine because of the severe haemolytic consequences of antibodies to these antigens. No crystal structure is available for RhD proteins with its partner RhAG, and the precise stoichiometry of the trimer complex remains unknown. Methods: To analyse their structural properties, the trimers formed by RhD and/or RhAG subunits were generated by protein modelling and molecular dynamics simulations were performed. Results: No major differences in structural behaviour were found between trimers of different compositions. The conformation of the subunits is relatively constant during molecular dynamics simulations, except for three large disordered loops. Discussion: This work makes it possible to propose a reasonable stoichiometry and demonstrates the potential of studying the structural behaviour of these proteins to investigate the hundreds of genetic variants relevant to transfusion medicine.
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Affiliation(s)
- Aline Floch
- University Paris Est Créteil, INSERM U955 Equipe Transfusion et Maladies du Globule Rouge, IMRB, Créteil, France
- Laboratoire de Biologie Médicale de Référence en Immuno-Hématologie Moléculaire, Etablissement Français du Sang Ile-de-France, Créteil, France
| | - Tatiana Galochkina
- Université Paris Cité and Université des Antilles and Université de la Réunion, Biologie Intégrée du Globule Rouge, UMR_S1134, BIGR, INSERM, DSIMB Bioinformatics team, Paris, France
| | - France Pirenne
- University Paris Est Créteil, INSERM U955 Equipe Transfusion et Maladies du Globule Rouge, IMRB, Créteil, France
- Laboratoire de Biologie Médicale de Référence en Immuno-Hématologie Moléculaire, Etablissement Français du Sang Ile-de-France, Créteil, France
| | - Christophe Tournamille
- University Paris Est Créteil, INSERM U955 Equipe Transfusion et Maladies du Globule Rouge, IMRB, Créteil, France
- Laboratoire de Biologie Médicale de Référence en Immuno-Hématologie Moléculaire, Etablissement Français du Sang Ile-de-France, Créteil, France
| | - Alexandre G. de Brevern
- Université Paris Cité and Université des Antilles and Université de la Réunion, Biologie Intégrée du Globule Rouge, UMR_S1134, BIGR, INSERM, DSIMB Bioinformatics team, Paris, France
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5
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Zhang Y, Qiang Y, Li H, Li G, Lu L, Dao M, Karniadakis GE, Popel AS, Zhao C. Signaling-biophysical modeling unravels mechanistic control of red blood cell phagocytosis by macrophages in sickle cell disease. PNAS NEXUS 2024; 3:pgae031. [PMID: 38312226 PMCID: PMC10833451 DOI: 10.1093/pnasnexus/pgae031] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Accepted: 01/09/2024] [Indexed: 02/06/2024]
Abstract
Red blood cell (RBC) aging manifests through progressive changes in cell morphology, rigidity, and expression of membrane proteins. To maintain the quality of circulating blood, splenic macrophages detect the biochemical signals and biophysical changes of RBCs and selectively clear them through erythrophagocytosis. In sickle cell disease (SCD), RBCs display alterations affecting their interaction with macrophages, leading to aberrant phagocytosis that may cause life-threatening spleen sequestration crises. To illuminate the mechanistic control of RBC engulfment by macrophages in SCD, we integrate a system biology model of RBC-macrophage signaling interactions with a biophysical model of macrophage engulfment, as well as in vitro phagocytosis experiments using the spleen-on-a-chip technology. Our modeling framework accurately predicts the phagocytosis dynamics of RBCs under different disease conditions, reveals patterns distinguishing normal and sickle RBCs, and identifies molecular targets including Src homology 2 domain-containing protein tyrosine phosphatase-1 (SHP1) and cluster of differentiation 47 (CD47)/signal regulatory protein α (SIRPα) as therapeutic targets to facilitate the controlled clearance of sickle RBCs in the spleen.
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Affiliation(s)
- Yu Zhang
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Yuhao Qiang
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - He Li
- School of Chemical, Materials and Biomedical Engineering, University of Georgia, Athens, GA 30602, USA
| | - Guansheng Li
- School of Engineering, Brown University, Providence, RI 02912, USA
| | - Lu Lu
- Department of Statistics and Data Science, Yale University, New Haven, CT 06520, USA
| | - Ming Dao
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | | | - Aleksander S Popel
- Department of Biomedical Engineering, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Chen Zhao
- School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu 210029, China
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6
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Advantage of extracellular vesicles in hindering the CD47 signal for cancer immunotherapy. J Control Release 2022; 351:727-738. [DOI: 10.1016/j.jconrel.2022.09.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 09/14/2022] [Accepted: 09/20/2022] [Indexed: 11/20/2022]
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7
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Wang C, Sallman DA. Targeting the cluster of differentiation 47/signal-regulatory protein alpha axis in myeloid malignancies. Curr Opin Hematol 2022; 29:44-52. [PMID: 34854834 DOI: 10.1097/moh.0000000000000691] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
PURPOSE OF REVIEW The antitumor activity of macrophages is regulated by a balance of prophagocytic and antiphagocytic signals. Cluster of differentiation 47 (CD47), the dominant macrophage immune checkpoint ('do not eat me' signal), interacts with its receptor signal-regulatory protein alpha (SIRPα) to suppress phagocytic activities. This axis plays a pivotal role in immune evasion in myeloid malignancies as well as multiple cancers providing strong rationale for therapeutic exploitation. RECENT FINDINGS Preclinical studies have revealed overexpression of CD47 on leukemic stem cells and myeloblasts from patients with myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML), which contributes to immune surveillance evasion and is associated with poor outcomes. Blockade of CD47 with different approaches has demonstrated proof-of-concept antitumor activities mainly through phagocytic clearance. Early phase clinical trials combining the anti-CD47 mAb magrolimab with the hypomethylating agent azacitidine have showed synergistic activities, deep and durable responses, as well as a tolerable safety profile in these patients, including those with TP53 mutations. SUMMARY Targeting CD47/SIRPα axis, in combination with other therapeutic agents, represents a promising treatment approach for patients with myeloid malignancies, particularly the challenging TP53-mutated subgroup.
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Affiliation(s)
- Chen Wang
- Department of Internal Medicine, University of South Florida, Morsani College of Medicine
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
| | - David A Sallman
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, USA
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8
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Alyami EM, Tarar A, Peng CA. Less phagocytosis of viral vectors by tethering with CD47 ectodomain. J Mater Chem B 2021; 10:64-77. [PMID: 34846059 DOI: 10.1039/d1tb01815a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Many viral vectors, which are effective when administrated in situ, lack efficacy when delivered intravenously. The key reason for this is the rapid clearance of the viruses from the blood circulation via the immune system before they reach target sites. Therefore, avoiding their clearance by the immune system is essential. In this study, lentiviral vectors were tethered with the ectodomain of self-marker protein CD47 to suppress phagocytosis via interacting with SIRPα on the outer membrane of macrophage cells. CD47 ectodomain and core-streptavidin fusion gene (CD47ED-coreSA) was constructed into pET-30a(+) plasmid and transformed into Lemo21 (DE3) competent E. coli cells. The expressed CD47ED-coreSA chimeric protein was purified by cobalt-nitrilotriacetate affinity column and characterized by SDS-PAGE and western blot. The purified chimeric protein was anchored on biotinylated lentivirus via biotin-streptavidin binding. The CD47ED-capped lentiviruses encoding GFP were used to infect J774A.1 macrophage cells to assess the impact on phagocytosis. Our results showed that the overexpressed CD47ED-coreSA chimeric protein was purified and bound on the surface of biotinylated lentivirus which was confirmed via immunoblotting assay. The process to produce biotinylated lentivirus did not affect native viral infectivity. It was shown that the level of GFP expression in J774A.1 macrophages transduced with CD47ED-lentiviruses was threefold lower in comparison to control lentiviruses, indicating an antiphagocytic effect triggered by the interaction of CD47ED and SIRPα. Through the test of blocking antibodies against CD47ED and/or SIRPα, it was confirmed that the phagocytosis inhibition was mediated through the CD47ED-SIRPα axis signaling. In conclusion, surface immobilization of CD47ED on lentiviral vectors inhibits their phagocytosis by macrophages. The chimeric protein of CD47 ectodomain and core-streptavidin is effective in mediating the surface binding and endowing the lentiviral nanoparticles with the antiphagocytic property.
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Affiliation(s)
- Esmael M Alyami
- Department of Chemical and Biological Engineering, University of Idaho, Engineering Physics Building 410, 875 Perimeter Drive, Moscow, ID 83844-0904, USA.
| | - Ammar Tarar
- Department of Chemical and Biological Engineering, University of Idaho, Engineering Physics Building 410, 875 Perimeter Drive, Moscow, ID 83844-0904, USA.
| | - Ching-An Peng
- Department of Chemical and Biological Engineering, University of Idaho, Engineering Physics Building 410, 875 Perimeter Drive, Moscow, ID 83844-0904, USA.
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9
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Chen YC, Shi W, Shi JJ, Lu JJ. Progress of CD47 immune checkpoint blockade agents in anticancer therapy: a hematotoxic perspective. J Cancer Res Clin Oncol 2021; 148:1-14. [PMID: 34609596 DOI: 10.1007/s00432-021-03815-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 09/20/2021] [Indexed: 01/22/2023]
Abstract
CD47, a transmembrane protein, acts as a "do not eat me" signal that is overexpressed in many tumor cell types, thereby forming a signaling axis with its ligand signal regulatory protein alpha (SIRPα) and enabling the tumor cells to escape from macrophage-mediated phagocytosis. Several clinical trials with CD47 targeting agents are underway and have achieved impressive results preliminarily. However, hematotoxicity (particularly anemia) has emerged as the most common side effect that cannot be neglected. In the development of CD47 targeting agents, various methods have been used to mitigate this toxicity. In this review, we summarized five strategies used to alleviate CD47 blockade-induced hematotoxicity, as follows: change in the mode of administration; dual targeting bispecific antibodies of CD47; CD47 antibodies/SIRPα fusion proteins with negligible red blood cell binding; anti-SIRPα antibodies; and glutaminyl-peptide cyclotransferase like inhibitors. With these strategies, the development of CD47 targeting agents can be improved.
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Affiliation(s)
- Yu-Chi Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Wei Shi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China
| | - Jia-Jie Shi
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
| | - Jin-Jian Lu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, China.
- Department of Pharmaceutical Sciences, Faculty of Health Sciences, University of Macau, Macao, China.
- MoE Frontiers Science Center for Precision Oncology, University of Macau, Macao, China.
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10
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Fenalti G, Villanueva N, Griffith M, Pagarigan B, Lakkaraju SK, Huang RYC, Ladygina N, Sharma A, Mikolon D, Abbasian M, Johnson J, Hadjivassiliou H, Zhu D, Chamberlain PP, Cho H, Hariharan K. Structure of the human marker of self 5-transmembrane receptor CD47. Nat Commun 2021; 12:5218. [PMID: 34471125 PMCID: PMC8410850 DOI: 10.1038/s41467-021-25475-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 08/11/2021] [Indexed: 02/07/2023] Open
Abstract
CD47 is the only 5-transmembrane (5-TM) spanning receptor of the immune system. Its extracellular domain (ECD) is a cell surface marker of self that binds SIRPα and inhibits macrophage phagocytosis, and cancer immuno-therapy approaches in clinical trials are focused on blocking CD47/SIRPα interaction. We present the crystal structure of full length CD47 bound to the function-blocking antibody B6H12. CD47 ECD is tethered to the TM domain via a six-residue peptide linker (114RVVSWF119) that forms an extended loop (SWF loop), with the fundamental role of inserting the side chains of W118 and F119 into the core of CD47 extracellular loop region (ECLR). Using hydrogen-deuterium exchange and molecular dynamics simulations we show that CD47's ECLR architecture, comprised of two extracellular loops and the SWF loop, creates a molecular environment stabilizing the ECD for presentation on the cell surface. These findings provide insights into CD47 immune recognition, signaling and therapeutic intervention.
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Affiliation(s)
- Gustavo Fenalti
- grid.419971.3Molecular Structure and Design, Bristol Myers Squibb, San Diego, CA USA
| | - Nicolas Villanueva
- grid.419971.3Molecular Structure and Design, Bristol Myers Squibb, San Diego, CA USA
| | - Mark Griffith
- grid.419971.3Protein Homeostasis, Bristol Myers Squibb, San Diego, CA USA
| | - Barbra Pagarigan
- grid.419971.3Molecular Structure and Design, Bristol Myers Squibb, San Diego, CA USA
| | | | - Richard Y.-C. Huang
- grid.419971.3Pharmaceutical Candidate Optimization, Nonclinical Research and Development, Bristol Myers Squibb, Princeton, NJ USA
| | - Nadia Ladygina
- grid.419971.3Pharmacology, Bristol Myers Squibb, San Diego, CA USA
| | - Alok Sharma
- grid.419971.3Molecular Structure and Design, Bristol Myers Squibb, Princeton, NJ USA
| | - David Mikolon
- grid.419971.3Discovery Biotherapeutics, Bristol Myers Squibb, San Diego, CA USA
| | - Mahan Abbasian
- grid.419971.3Discovery Biotherapeutics, Bristol Myers Squibb, San Diego, CA USA
| | - Jeffrey Johnson
- grid.419971.3Discovery Biotherapeutics, Bristol Myers Squibb, San Diego, CA USA
| | | | - Dan Zhu
- grid.419971.3Discovery Biotherapeutics, Bristol Myers Squibb, San Diego, CA USA
| | | | - Ho Cho
- grid.419971.3Discovery Biotherapeutics, Bristol Myers Squibb, San Diego, CA USA
| | - Kandasamy Hariharan
- grid.419971.3Discovery Biotherapeutics, Bristol Myers Squibb, San Diego, CA USA
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11
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Suter EC, Schmid EM, Harris AR, Voets E, Francica B, Fletcher DA. Antibody:CD47 ratio regulates macrophage phagocytosis through competitive receptor phosphorylation. Cell Rep 2021; 36:109587. [PMID: 34433055 PMCID: PMC8477956 DOI: 10.1016/j.celrep.2021.109587] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 04/19/2021] [Accepted: 08/02/2021] [Indexed: 01/04/2023] Open
Abstract
Cancer immunotherapies often modulate macrophage effector function by introducing either targeting antibodies that activate Fcγ receptors (FcγRs) or blocking antibodies that disrupt inhibitory SIRPα-CD47 engagement. However, how these competing signals are integrated is poorly understood, raising questions about how to effectively titrate immune responses. Here, we find that macrophage phagocytic decisions are regulated by the ratio of activating ligand to inhibitory ligand over a broad range of absolute molecular densities. Using both endogenous and chimeric receptors, we show that activating:inhibitory ligand ratios of at least 10:1 are required to promote phagocytosis of model antibody-opsonized CD47-inhibited targets and that lowering that ratio reduces FcγR phosphorylation because of inhibitory phosphatases recruited to CD47-bound SIRPα. We demonstrate that ratiometric signaling is critical for phagocytosis of tumor cells and can be modified by blocking SIRPα, indicating that balancing targeting and blocking antibodies may be important for controlling macrophage phagocytosis in cancer immunotherapy.
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Affiliation(s)
- Emily C Suter
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA; UC Berkeley/UC San Francisco Graduate Group in Bioengineering, Berkeley, CA, USA
| | - Eva M Schmid
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA
| | - Andrew R Harris
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA; Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON, Canada
| | - Erik Voets
- Aduro Biotech Europe, Oss, the Netherlands
| | | | - Daniel A Fletcher
- Department of Bioengineering, University of California, Berkeley, Berkeley, CA, USA; UC Berkeley/UC San Francisco Graduate Group in Bioengineering, Berkeley, CA, USA; Division of Biological Systems and Engineering, Lawrence Berkeley National Laboratory, Berkeley, CA, USA; Chan Zuckerberg Biohub, San Francisco, CA, USA.
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12
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Logtenberg MEW, Scheeren FA, Schumacher TN. The CD47-SIRPα Immune Checkpoint. Immunity 2020; 52:742-752. [PMID: 32433947 DOI: 10.1016/j.immuni.2020.04.011] [Citation(s) in RCA: 308] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/16/2020] [Accepted: 04/22/2020] [Indexed: 12/11/2022]
Abstract
The cytotoxic activity of myeloid cells is regulated by a balance of signals that are transmitted through inhibitory and activating receptors. The Cluster of Differentiation 47 (CD47) protein, expressed on both healthy and cancer cells, plays a pivotal role in this balance by delivering a "don't eat me signal" upon binding to the Signal-regulatory protein alpha (SIRPα) receptor on myeloid cells. Here, we review the current understanding of the role of the CD47-SIRPα axis in physiological tissue homeostasis and as a promising therapeutic target in, among others, oncology, fibrotic diseases, atherosclerosis, and stem cell therapies. We discuss gaps in understanding and highlight where additional insight will be beneficial to allow optimal exploitation of this myeloid cell checkpoint as a target in human disease.
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Affiliation(s)
- Meike E W Logtenberg
- Division of Molecular Oncology and Immunology, Oncode Institute, the Netherlands Cancer Institute, Amsterdam, the Netherlands
| | - Ferenc A Scheeren
- Department of Medical Oncology, Leiden University Medical Center (LUMC), Leiden, the Netherlands
| | - Ton N Schumacher
- Division of Molecular Oncology and Immunology, Oncode Institute, the Netherlands Cancer Institute, Amsterdam, the Netherlands; Department of Immunohematology and Bloodtransfusion, Leiden University Medical Center, Leiden, the Netherlands.
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13
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Chai S, Jiao R, Sun X, Fu P, Zhao Q, Sang M. Novel nonsense mutation p. Gln264Ter in the ANK1 confirms causative role for hereditary spherocytosis: a case report. BMC MEDICAL GENETICS 2020; 21:223. [PMID: 33187473 PMCID: PMC7666488 DOI: 10.1186/s12881-020-01161-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Accepted: 10/29/2020] [Indexed: 11/20/2022]
Abstract
Background Hereditary spherocytosis (HS) is the most common haemolytic anaemia caused by congenital membrane defects of red blood cells. The name derives from the presence of spherical red blood cells in the peripheral blood. Clinical manifestations of HS are anaemia, haemolytic jaundice, and large spleen, and infection can worsen the condition, often with cholelithiasis. HS is mainly caused by abnormal functions of the products of six genes. Splenectomy is the main treatment for HS. Case presentation Half a day after birth, the proband exhibited HS-related symptoms, with progressive aggravation. Routine examination in the outpatient department showed an increase in white blood cells and a decrease in red blood cells. His mother had HS and a partial splenectomy. We suspected that the infant might also have HS. Genomic DNA samples were extracted from the three members of the HS trio pedigree, and genomic whole-exome sequencing (WES) was performed. The three DNA samples were amplified by polymerase chain reaction (PCR), followed by Sanger sequencing to identify mutation sites. A novel nonsense heterozygous mutation, c.790C > T (p. Gln264Ter), in the ANK1 gene, which causes premature termination of translation, was found in this Chinese family with autosomal dominant HS. Conclusions This de novo nonsense mutation can cause the onset of HS in early childhood, with severe symptoms. Expanding the ANK1 genotype mutation spectrum will lay a foundation for the further application of mutation screening in genetic counselling.
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Affiliation(s)
- Senmao Chai
- Hubei Institute of Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, 442000, People's Republic of China
| | - Rong Jiao
- Department of New pediatric, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei, China
| | - Xiaodong Sun
- Hubei Institute of Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, 442000, People's Republic of China
| | - Pan Fu
- Hubei Institute of Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, 442000, People's Republic of China
| | - Qiang Zhao
- Hubei Institute of Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, 442000, People's Republic of China
| | - Ming Sang
- Hubei Institute of Parkinson's Disease at Xiangyang No.1 People's Hospital, Hubei Key Laboratory of Wudang Local Chinese Medicine Research, Hubei University of Medicine, Shiyan, 442000, People's Republic of China.
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14
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Morrissey MA, Kern N, Vale RD. CD47 Ligation Repositions the Inhibitory Receptor SIRPA to Suppress Integrin Activation and Phagocytosis. Immunity 2020; 53:290-302.e6. [PMID: 32768386 PMCID: PMC7453839 DOI: 10.1016/j.immuni.2020.07.008] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 05/19/2020] [Accepted: 07/10/2020] [Indexed: 01/29/2023]
Abstract
CD47 acts as a "don't eat me" signal that protects cells from phagocytosis by binding and activating its receptor SIPRA on macrophages. CD47 suppresses multiple different pro-engulfment "eat me" signals, including immunoglobulin G (IgG), complement, and calreticulin, on distinct target cells. This complexity has limited understanding of how the "don't eat me" signal is transduced biochemically. Here, we utilized a reconstituted system with a defined set of signals to interrogate the mechanism of SIRPA activation and its downstream targets. CD47 ligation altered SIRPA localization, positioning SIRPA for activation at the phagocytic synapse. At the phagocytic synapse, SIRPA inhibited integrin activation to limit macrophage spreading across the surface of the engulfment target. Chemical reactivation of integrin bypassed CD47-mediated inhibition and rescued engulfment, similar to the effect of a CD47 function-blocking antibody. Thus, the CD47-SIRPA axis suppresses phagocytosis by inhibiting inside-out activation of integrin signaling in the macrophage, with implications to cancer immunotherapy applications.
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Affiliation(s)
- Meghan A Morrissey
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute, University of California San Francisco, San Francisco, CA 94158, USA
| | - Nadja Kern
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute, University of California San Francisco, San Francisco, CA 94158, USA
| | - Ronald D Vale
- Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA 94158, USA; Howard Hughes Medical Institute, University of California San Francisco, San Francisco, CA 94158, USA.
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15
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Inamdar VV, Fitzpatrick E, Alferiev I, Nagaswami C, Spruce LA, Fazelinia H, Bratinov G, Seeholzer SH, Levy RJ, Fishbein I, Stachelek SJ. Stability and bioactivity of pepCD47 attachment on stainless steel surfaces. Acta Biomater 2020; 104:231-240. [PMID: 31935523 DOI: 10.1016/j.actbio.2019.12.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 12/16/2019] [Accepted: 12/30/2019] [Indexed: 12/30/2022]
Abstract
In-stent restenosis (ISR) and late stent thrombosis are the major complications associated with the use of metal stents and drug eluting stents respectively. Our lab previously investigated the use of peptide CD47 in improving biocompatibility of bare metal stents in a rat carotid stent model and our results demonstrated a significant reduction in platelet deposition and ISR. However, this study did not characterize the stability of the pepCD47 on metal surfaces post storage, sterilization and deployment. Thus, the objective of the present study was 1) to test the stability of the peptide post - storage, sterilization, exposure to shear and mechanical stress and 2) to begin to expand our current knowledge of pepCD47 coated metal surfaces into the preclinical large animal rabbit model. Our results show that the maximum immobilization density of pepCD47 on metal surfaces is approximately 350 ng/cm2. 100% of the pepCD47 was retained on the metal surface post 24 weeks of storage at 4 °C, exposure to physiological shear stress, and mechanical stress of stent expansion. The bioactivity of the pepCD47 was found to be intact post 24 weeks of storage and ethylene oxide sterilization. Finally our ex vivo studies demonstrated that compared to bare metal the rabbit pepCD47 coated surfaces showed - 45% reduced platelet adhesion, a 10-fold decrease in platelet activation, and 93% endothelial cell retention. Thus, our data suggests that pepCD47 coating on metal surfaces is stable and rabbit pepCD47 shows promising preliminary results in preventing thrombosis and not inhibiting the growth of endothelial cells. STATEMENT OF SIGNIFICANCE: Biocompatibility of bare metal stents is a major challenge owing to the significantly high rates of in-stent restenosis. Previously we demonstrated that peptide CD47 functionalization improves the biocompatibility of bare metal stents in rat model. A similar trend was observed in our ex vivo studies where rabbit blood was perfused over the rabbit pepCD47 functionalized surfaces. These results provide valuable proof of concept data for future in vivo rabbit model studies. In addition, we investigated stability of the pepCD47 on metal surface and observed that pepCD47 coating is stable over time and resistant to industrially relevant pragmatic challenges.
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Affiliation(s)
- Vaishali V Inamdar
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, United States
| | - Emmett Fitzpatrick
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, United States
| | - Ivan Alferiev
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, United States; The Proteomics Core Facility, The Children's Hospital of Philadelphia, Research Insititute, United States
| | - Chandrasekaran Nagaswami
- Perelman School of Medicine, The University of Pennsylvania, United States; Department of Cell and Developmental Biology, Perelman School of Medicine, The University of Pennsylvania, United States
| | - Lynn A Spruce
- The Proteomics Core Facility, The Children's Hospital of Philadelphia, Research Insititute, United States
| | - Hossein Fazelinia
- The Proteomics Core Facility, The Children's Hospital of Philadelphia, Research Insititute, United States
| | - George Bratinov
- Division of Orthopedics-Department of Pediatrics, The Children's Hospital of Philadelphia, United States
| | - Steven H Seeholzer
- The Proteomics Core Facility, The Children's Hospital of Philadelphia, Research Insititute, United States
| | - Robert J Levy
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, United States; Perelman School of Medicine, The University of Pennsylvania, United States
| | - Ilia Fishbein
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, United States; Perelman School of Medicine, The University of Pennsylvania, United States.
| | - Stanley J Stachelek
- Division of Cardiology-Department of Pediatrics, The Children's Hospital of Philadelphia, United States; Perelman School of Medicine, The University of Pennsylvania, United States.
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16
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Desrames A, Genetet S, Delcourt MP, Goossens D, Mouro-Chanteloup I. Detergent-free isolation of native red blood cell membrane complexes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1862:183126. [PMID: 31738902 DOI: 10.1016/j.bbamem.2019.183126] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 10/29/2019] [Accepted: 11/10/2019] [Indexed: 12/15/2022]
Abstract
Over the past few decades, studies on the red blood cell (RBC) membrane gave rise to increasingly sophisticated although divergent models of its structural organization, since investigations were often performed in denaturing conditions using detergents. To access soluble isolated RBC membrane complexes with the preservation of their interactions and conformations, we decided to apply the recent SMALP (Styrene Maleic Acid Lipid Particles) technology to RBC ghosts. Depending on the ionic strength of buffers in which ghost membranes were resuspended, the isolated proteins within SMALPs could differ on Coomassie-stained gels, but with few changes when compared to ghost membrane SDS lysates. We subsequently produced SMALPs derived from ghosts from two different blood group phenotypes, RhD-positive and RhD-negative, both types of RBC expressing the RhCE proteins but only RhD-positive cells being able to express the RhD proteins. This allowed the isolation, by size exclusion chromatography (SEC), of soluble fractions containing the Rh complex, including the RhD protein or not, within SMALPs. The use a conformation-dependent anti-RhD antibody in immunoprecipitation studies performed on SEC fractions of SMALPs containing Rh proteins clearly demonstrated that the RhD protein, which was only present in SMALPs prepared from RhD-positive RBC ghosts, has preserved at least one important conformational RhD epitope. This approach opens new perspectives in the field of the erythroid membrane study, such as visualization of RBC membrane complexes in native conditions by cryo-electron microscopy (CryoEM) or immuno-tests with conformation-dependent antibodies against blood group antigens on separated and characterized SMALPs containing RBC membrane proteins.
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Affiliation(s)
- Alexandra Desrames
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France; Institut National de la transfusion sanguine, F-75015 Paris, France
| | - Sandrine Genetet
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France; Institut National de la transfusion sanguine, F-75015 Paris, France
| | - Maëlenn Païline Delcourt
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France; Institut National de la transfusion sanguine, F-75015 Paris, France
| | | | - Isabelle Mouro-Chanteloup
- Université de Paris, UMR_S1134, BIGR, Inserm, F-75015 Paris, France; Institut National de la transfusion sanguine, F-75015 Paris, France.
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17
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Feng M, Jiang W, Kim BYS, Zhang CC, Fu YX, Weissman IL. Phagocytosis checkpoints as new targets for cancer immunotherapy. Nat Rev Cancer 2019; 19:568-586. [PMID: 31462760 PMCID: PMC7002027 DOI: 10.1038/s41568-019-0183-z] [Citation(s) in RCA: 542] [Impact Index Per Article: 108.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/15/2019] [Indexed: 02/06/2023]
Abstract
Cancer immunotherapies targeting adaptive immune checkpoints have substantially improved patient outcomes across multiple metastatic and treatment-refractory cancer types. However, emerging studies have demonstrated that innate immune checkpoints, which interfere with the detection and clearance of malignant cells through phagocytosis and suppress innate immune sensing, also have a key role in tumour-mediated immune escape and might, therefore, be potential targets for cancer immunotherapy. Indeed, preclinical studies and early clinical data have established the promise of targeting phagocytosis checkpoints, such as the CD47-signal-regulatory protein α (SIRPα) axis, either alone or in combination with other cancer therapies. In this Review, we highlight the current understanding of how cancer cells evade the immune system by disrupting phagocytic clearance and the effect of phagocytosis checkpoint blockade on induction of antitumour immune responses. Given the role of innate immune cells in priming adaptive immune responses, an improved understanding of the tumour-intrinsic processes that inhibit essential immune surveillance processes, such as phagocytosis and innate immune sensing, could pave the way for the development of highly effective combination immunotherapy strategies that modulate both innate and adaptive antitumour immune responses.
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Affiliation(s)
- Mingye Feng
- Department of Immuno-Oncology, Beckman Research Institute, City of Hope Comprehensive Cancer Centre, Duarte, CA, USA.
| | - Wen Jiang
- Department of Radiation Oncology, The University of Texas Southwestern Medical Centre, Dallas, TX, USA.
| | - Betty Y S Kim
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Centre, Houston, TX, USA
| | - Cheng Cheng Zhang
- Department of Physiology, The University of Texas Southwestern Medical Centre, Dallas, TX, USA
| | - Yang-Xin Fu
- Department of Pathology, The University of Texas Southwestern Medical Centre, Dallas, TX, USA
| | - Irving L Weissman
- Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, CA, USA
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18
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Wang W, Liu W, Fidler T, Wang Y, Tang Y, Woods B, Welch C, Cai B, Silvestre-Roig C, Ai D, Yang YG, Hidalgo A, Soehnlein O, Tabas I, Levine RL, Tall AR, Wang N. Macrophage Inflammation, Erythrophagocytosis, and Accelerated Atherosclerosis in Jak2 V617F Mice. Circ Res 2019; 123:e35-e47. [PMID: 30571460 DOI: 10.1161/circresaha.118.313283] [Citation(s) in RCA: 155] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
RATIONALE The mechanisms driving atherothrombotic risk in individuals with JAK2 V617F ( Jak2 VF) positive clonal hematopoiesis or myeloproliferative neoplasms are poorly understood. OBJECTIVE The goal of this study was to assess atherosclerosis and underlying mechanisms in hypercholesterolemic mice with hematopoietic Jak2 VF expression. METHODS AND RESULTS Irradiated low-density lipoprotein receptor knockout ( Ldlr-/-) mice were transplanted with bone marrow from wild-type or Jak2 VF mice and fed a high-fat high-cholesterol Western diet. Hematopoietic functions and atherosclerosis were characterized. After 7 weeks of Western diet, Jak2 VF mice showed increased atherosclerosis. Early atherosclerotic lesions showed increased neutrophil adhesion and content, correlating with lesion size. After 12 weeks of Western diet, Jak2 VF lesions showed increased complexity, with larger necrotic cores, defective efferocytosis, prominent iron deposition, and costaining of erythrocytes and macrophages, suggesting erythrophagocytosis. Jak2 VF erythrocytes were more susceptible to phagocytosis by wild-type macrophages and showed decreased surface expression of CD47, a "don't-eat-me" signal. Human JAK2VF erythrocytes were also more susceptible to erythrophagocytosis. Jak2 VF macrophages displayed increased expression and production of proinflammatory cytokines and chemokines, prominent inflammasome activation, increased p38 MAPK (mitogen-activated protein kinase) signaling, and reduced levels of MerTK (c-Mer tyrosine kinase), a key molecule mediating efferocytosis. Increased erythrophagocytosis also suppressed efferocytosis. CONCLUSIONS Hematopoietic Jak2 VF expression promotes early lesion formation and increased complexity in advanced atherosclerosis. In addition to increasing hematopoiesis and neutrophil infiltration in early lesions, Jak2 VF caused cellular defects in erythrocytes and macrophages, leading to increased erythrophagocytosis but defective efferocytosis. These changes promote accumulation of iron in plaques and increased necrotic core formation which, together with exacerbated proinflammatory responses, likely contribute to plaque instability.
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Affiliation(s)
- Wei Wang
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Wenli Liu
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY.,Tianjin Key Laboratory of Metabolic Diseases, Department of Physiology and Pathophysiology, Tianjin Medical University, China (W.L., D.A.)
| | - Trevor Fidler
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Ying Wang
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Yang Tang
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Brittany Woods
- Human Oncology and Pathogenesis Program (B.W., R.L.L.), Memorial Sloan Kettering Cancer Center, New York, NY.,Leukemia Service, Department of Medicine (B.W., R.L.L.), Memorial Sloan Kettering Cancer Center, New York, NY
| | - Carrie Welch
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Bishuang Cai
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Carlos Silvestre-Roig
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, Munich, Germany (C.S.-R., A.H., O.S.)
| | - Ding Ai
- Tianjin Key Laboratory of Metabolic Diseases, Department of Physiology and Pathophysiology, Tianjin Medical University, China (W.L., D.A.)
| | - Yong-Guang Yang
- Columbia Center for Translational Immunology (Y.-G.Y.), Columbia University Medical Center, New York, NY
| | - Andres Hidalgo
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, Munich, Germany (C.S.-R., A.H., O.S.).,Area of Developmental and Cell Biology, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain (A.H.)
| | - Oliver Soehnlein
- Institute for Cardiovascular Prevention, Ludwig-Maximilians-University, Munich, Germany (C.S.-R., A.H., O.S.).,Department of Physiology and Pharmacology (FyFa), Karolinska Institutet, Stockholm, Sweden (O.S.).,German Center for Cardiovascular Research (DZHK), Partner Site Munich Heart Alliance, Munich, Germany (O.S.)
| | - Ira Tabas
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Ross L Levine
- Human Oncology and Pathogenesis Program (B.W., R.L.L.), Memorial Sloan Kettering Cancer Center, New York, NY.,Leukemia Service, Department of Medicine (B.W., R.L.L.), Memorial Sloan Kettering Cancer Center, New York, NY
| | - Alan R Tall
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
| | - Nan Wang
- From the Division of Molecular Medicine, Department of Medicine (W.W., W.L., T.F., Y.W., Y.T., C.W., B.C., I.T., A.R.T., N.W.), Columbia University Medical Center, New York, NY
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19
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Hawksworth J, Satchwell TJ, Meinders M, Daniels DE, Regan F, Thornton NM, Wilson MC, Dobbe JG, Streekstra GJ, Trakarnsanga K, Heesom KJ, Anstee DJ, Frayne J, Toye AM. Enhancement of red blood cell transfusion compatibility using CRISPR-mediated erythroblast gene editing. EMBO Mol Med 2019; 10:emmm.201708454. [PMID: 29700043 PMCID: PMC5991592 DOI: 10.15252/emmm.201708454] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Regular blood transfusion is the cornerstone of care for patients with red blood cell (RBC) disorders such as thalassaemia or sickle‐cell disease. With repeated transfusion, alloimmunisation often occurs due to incompatibility at the level of minor blood group antigens. We use CRISPR‐mediated genome editing of an immortalised human erythroblast cell line (BEL‐A) to generate multiple enucleation competent cell lines deficient in individual blood groups. Edits are combined to generate a single cell line deficient in multiple antigens responsible for the most common transfusion incompatibilities: ABO (Bombay phenotype), Rh (Rhnull), Kell (K0), Duffy (Fynull), GPB (S−s−U−). These cells can be differentiated to generate deformable reticulocytes, illustrating the capacity for coexistence of multiple rare blood group antigen null phenotypes. This study provides the first proof‐of‐principle demonstration of combinatorial CRISPR‐mediated blood group gene editing to generate customisable or multi‐compatible RBCs for diagnostic reagents or recipients with complicated matching requirements.
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Affiliation(s)
- Joseph Hawksworth
- School of Biochemistry, University of Bristol, Bristol, UK.,Bristol Institute for Transfusion Sciences, National Health Service Blood and Transplant (NHSBT), Bristol, UK
| | - Timothy J Satchwell
- School of Biochemistry, University of Bristol, Bristol, UK.,NIHR Blood and Transplant Research Unit, University of Bristol, Bristol, UK.,Bristol Institute for Transfusion Sciences, National Health Service Blood and Transplant (NHSBT), Bristol, UK
| | | | - Deborah E Daniels
- School of Biochemistry, University of Bristol, Bristol, UK.,NIHR Blood and Transplant Research Unit, University of Bristol, Bristol, UK
| | - Fiona Regan
- Imperial College Healthcare NHS Trust, London, UK.,NHS Blood & Transplant, London, UK
| | - Nicole M Thornton
- International Blood Group Reference Laboratory, National Health Service (NHS) Blood and Transplant, Bristol, UK
| | | | - Johannes Gg Dobbe
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Geert J Streekstra
- Department of Biomedical Engineering and Physics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Kongtana Trakarnsanga
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kate J Heesom
- School of Biochemistry, University of Bristol, Bristol, UK
| | - David J Anstee
- School of Biochemistry, University of Bristol, Bristol, UK.,NIHR Blood and Transplant Research Unit, University of Bristol, Bristol, UK.,Bristol Institute for Transfusion Sciences, National Health Service Blood and Transplant (NHSBT), Bristol, UK
| | - Jan Frayne
- School of Biochemistry, University of Bristol, Bristol, UK.,NIHR Blood and Transplant Research Unit, University of Bristol, Bristol, UK
| | - Ashley M Toye
- School of Biochemistry, University of Bristol, Bristol, UK .,NIHR Blood and Transplant Research Unit, University of Bristol, Bristol, UK.,Bristol Institute for Transfusion Sciences, National Health Service Blood and Transplant (NHSBT), Bristol, UK
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20
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Hatterer E, Barba L, Noraz N, Daubeuf B, Aubry-Lachainaye JP, von der Weid B, Richard F, Kosco-Vilbois M, Ferlin W, Shang L, Buatois V. Co-engaging CD47 and CD19 with a bispecific antibody abrogates B-cell receptor/CD19 association leading to impaired B-cell proliferation. MAbs 2019; 11:322-334. [PMID: 30569825 PMCID: PMC6380423 DOI: 10.1080/19420862.2018.1558698] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
CD19 is a B cell-specific receptor that regulates the threshold of B cell receptor (BCR)-mediated cell proliferation. A CD47xCD19 bispecific antibody (biAb) was generated to target and deplete B cells via multiple antibody-mediated mechanisms. Interestingly, the biAb, constructed of a CD19 binding arm and a CD47 binding arm, inhibited BCR-mediated B-cell proliferation with an effect even more potent than a CD19 monoclonal antibody (mAb). The inhibitory effect of the biAb was not attributable to CD47 binding because a monovalent or bivalent anti-CD47 mAb had no effect on B cell proliferation. Fluorescence resonance energy transfer analysis demonstrated that co-engaging CD19 and CD47 prevented CD19 clustering and its migration to BCR clusters, while only engaging CD19 (with a mAb) showed no impact on either CD19 clustering or migration. The lack of association between CD19 and the BCR resulted in decreased phosphorylation of CD19 upon BCR activation. Furthermore, the biAb differentially modulated BCR-induced gene expression compared to a CD19 mAb. Taken together, this unexpected role of CD47xCD19 co-ligation in inhibiting B cell proliferation illuminates a novel approach in which two B cell surface molecules can be tethered, to one another in order, which may provide a therapeutic benefit in settings of autoimmunity and B cell malignancies.
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Affiliation(s)
- Eric Hatterer
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
| | - Leticia Barba
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
| | - Nelly Noraz
- b INSERM U1217, Institut NeuroMyoGène, Lyon , University Claude Bernard Lyon 1 , Lyon , France
| | - Bruno Daubeuf
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
| | | | | | - Françoise Richard
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
| | | | - Walter Ferlin
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
| | - Limin Shang
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
| | - Vanessa Buatois
- a Exploratory Sciences , NovImmune SA , Plan les Ouates , Switzerland
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21
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Velliquette RW, Aeschlimann J, Kirkegaard J, Shakarian G, Lomas‐Francis C, Westhoff CM. Monoclonal anti‐CD47 interference in red cell and platelet testing. Transfusion 2018; 59:730-737. [DOI: 10.1111/trf.15033] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/17/2018] [Accepted: 09/23/2018] [Indexed: 12/14/2022]
Affiliation(s)
- Randall W. Velliquette
- Immunohematology and Genomics LaboratoryNew York Blood Center, New York, New York; and the Community Blood Center Kansas City Missouri
| | - Judith Aeschlimann
- Immunohematology and Genomics LaboratoryNew York Blood Center, New York, New York; and the Community Blood Center Kansas City Missouri
| | - Julie Kirkegaard
- Immunohematology and Genomics LaboratoryNew York Blood Center, New York, New York; and the Community Blood Center Kansas City Missouri
| | - Gayane Shakarian
- Immunohematology and Genomics LaboratoryNew York Blood Center, New York, New York; and the Community Blood Center Kansas City Missouri
| | - Christine Lomas‐Francis
- Immunohematology and Genomics LaboratoryNew York Blood Center, New York, New York; and the Community Blood Center Kansas City Missouri
| | - Connie M. Westhoff
- Immunohematology and Genomics LaboratoryNew York Blood Center, New York, New York; and the Community Blood Center Kansas City Missouri
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22
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Hayashi K, Yamada S, Sakamoto W, Usugi E, Watanabe M, Yogo T. Red Blood Cell-Shaped Microparticles with a Red Blood Cell Membrane Demonstrate Prolonged Circulation Time in Blood. ACS Biomater Sci Eng 2018; 4:2729-2732. [DOI: 10.1021/acsbiomaterials.8b00197] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Koichiro Hayashi
- Division of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
- Department of Biomaterials, Faculty of Dental Science, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-0044, Japan
| | - Shota Yamada
- Division of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Wataru Sakamoto
- Division of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Eri Usugi
- Oncologic Pathology Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu 514-8507, Japan
| | - Masatoshi Watanabe
- Oncologic Pathology Graduate School of Medicine, Mie University, 2-174 Edobashi, Tsu 514-8507, Japan
| | - Toshinobu Yogo
- Division of Materials Research, Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
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23
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Huisjes R, Satchwell TJ, Verhagen LP, Schiffelers RM, van Solinge WW, Toye AM, van Wijk R. Quantitative measurement of red cell surface protein expression reveals new biomarkers for hereditary spherocytosis. Int J Lab Hematol 2018; 40:e74-e77. [PMID: 29746727 DOI: 10.1111/ijlh.12841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R Huisjes
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - T J Satchwell
- School of Biochemistry, University of Bristol, Bristol, UK.,National Institute for Health Research Blood and Transplant Research Unit (NIHR BTRU) in Red Blood Cell Products, University of Bristol, Bristol, UK
| | - L P Verhagen
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - R M Schiffelers
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - W W van Solinge
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - A M Toye
- School of Biochemistry, University of Bristol, Bristol, UK.,National Institute for Health Research Blood and Transplant Research Unit (NIHR BTRU) in Red Blood Cell Products, University of Bristol, Bristol, UK
| | - R van Wijk
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
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24
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Buatois V, Johnson Z, Salgado-Pires S, Papaioannou A, Hatterer E, Chauchet X, Richard F, Barba L, Daubeuf B, Cons L, Broyer L, D'Asaro M, Matthes T, LeGallou S, Fest T, Tarte K, Clarke Hinojosa RK, Genescà Ferrer E, Ribera JM, Dey A, Bailey K, Fielding AK, Eissenberg L, Ritchey J, Rettig M, DiPersio JF, Kosco-Vilbois MH, Masternak K, Fischer N, Shang L, Ferlin WG. Preclinical Development of a Bispecific Antibody that Safely and Effectively Targets CD19 and CD47 for the Treatment of B-Cell Lymphoma and Leukemia. Mol Cancer Ther 2018; 17:1739-1751. [PMID: 29743205 DOI: 10.1158/1535-7163.mct-17-1095] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/15/2018] [Accepted: 05/04/2018] [Indexed: 12/14/2022]
Abstract
CD47, an ubiquitously expressed innate immune checkpoint receptor that serves as a universal "don't eat me" signal of phagocytosis, is often upregulated by hematologic and solid cancers to evade immune surveillance. Development of CD47-targeted modalities is hindered by the ubiquitous expression of the target, often leading to rapid drug elimination and hemotoxicity including anemia. To overcome such liabilities, we have developed a fully human bispecific antibody, NI-1701, designed to coengage CD47 and CD19 selectively on B cells. NI-1701 demonstrates favorable elimination kinetics with no deleterious effects seen on hematologic parameters following single or multiple administrations to nonhuman primates. Potent in vitro and in vivo activity is induced by NI-1701 to kill cancer cells across a plethora of B-cell malignancies and control tumor growth in xenograft mouse models. The mechanism affording maximal tumor growth inhibition by NI-1701 is dependent on the coengagement of CD47/CD19 on B cells inducing potent antibody-dependent cellular phagocytosis of the targeted cells. NI-1701-induced control of tumor growth in immunodeficient NOD/SCID mice was more effective than that achieved with the anti-CD20 targeted antibody, rituximab. Interestingly, a synergistic effect was seen when tumor-implanted mice were coadministered NI-1701 and rituximab leading to significantly improved tumor growth inhibition and regression in some animals. We describe herein, a novel bispecific antibody approach aimed at sensitizing B cells to become more readily phagocytosed and eliminated thus offering an alternative or adjunct therapeutic option to patients with B-cell malignancies refractory/resistant to anti-CD20-targeted therapy. Mol Cancer Ther; 17(8); 1739-51. ©2018 AACR.
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Affiliation(s)
| | - Zoë Johnson
- Novimmune S.A., Plan-les-Ouates, Switzerland
| | | | | | | | | | | | | | | | - Laura Cons
- Novimmune S.A., Plan-les-Ouates, Switzerland
| | | | | | - Thomas Matthes
- Medical Faculty, University of Geneva, Genève, Switzerland
| | | | - Thierry Fest
- Rennes 1 University, Inserm U1236, Rennes, France
| | - Karin Tarte
- Rennes 1 University, Inserm U1236, Rennes, France
| | - Robert K Clarke Hinojosa
- Josep Carreras Leukaemia Research Institute (IJC), Campus ICO-Germans Trias Pujol, Badalona, Barcelona, Spain
| | - Eulàlia Genescà Ferrer
- Josep Carreras Leukaemia Research Institute (IJC), Campus ICO-Germans Trias Pujol, Badalona, Barcelona, Spain
| | - José María Ribera
- Josep Carreras Leukaemia Research Institute (IJC), Campus ICO-Germans Trias Pujol, Badalona, Barcelona, Spain
| | - Aditi Dey
- Paul O'Gorman Building, University College London (UCL) Cancer Institute, London, United Kingdom
| | - Katharine Bailey
- Paul O'Gorman Building, University College London (UCL) Cancer Institute, London, United Kingdom
| | - Adele K Fielding
- Paul O'Gorman Building, University College London (UCL) Cancer Institute, London, United Kingdom
| | - Linda Eissenberg
- Division of Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Julie Ritchey
- Division of Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - Michael Rettig
- Division of Oncology, Washington University School of Medicine, St. Louis, Missouri
| | - John F DiPersio
- Division of Oncology, Washington University School of Medicine, St. Louis, Missouri
| | | | | | | | - Limin Shang
- Novimmune S.A., Plan-les-Ouates, Switzerland
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25
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Characterizing pathology in erythrocytes using morphological and biophysical membrane properties: Relation to impaired hemorheology and cardiovascular function in rheumatoid arthritis. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2017; 1859:2381-2391. [DOI: 10.1016/j.bbamem.2017.09.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 09/11/2017] [Accepted: 09/13/2017] [Indexed: 01/15/2023]
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26
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Dheilly E, Moine V, Broyer L, Salgado-Pires S, Johnson Z, Papaioannou A, Cons L, Calloud S, Majocchi S, Nelson R, Rousseau F, Ferlin W, Kosco-Vilbois M, Fischer N, Masternak K. Selective Blockade of the Ubiquitous Checkpoint Receptor CD47 Is Enabled by Dual-Targeting Bispecific Antibodies. Mol Ther 2017; 25:523-533. [PMID: 28153099 PMCID: PMC5368402 DOI: 10.1016/j.ymthe.2016.11.006] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 11/04/2016] [Accepted: 11/04/2016] [Indexed: 01/05/2023] Open
Abstract
CD47 is a ubiquitously expressed immune checkpoint receptor that is often upregulated in cancer. CD47 interacts with its counter-receptor SIRPα on macrophages and other myeloid cells to inhibit cancer cell phagocytosis and drive immune evasion. To overcome tolerability and “antigen sink” issues arising from widespread CD47 expression, we generated dual-targeting bispecific antibodies that selectively block the CD47-SIRPα interaction on malignant cells expressing a specific tumor-associated antigen; e.g., CD19 or mesothelin. These bispecific κλ bodies are fully human, native IgG1 molecules, combining tumor targeting and selective CD47 blockade with immune activating mechanisms mediated by the Fc portion of the antibody. CD47-neutralizing κλ bodies efficiently kill cancer cells in vitro and in vivo but interact only weakly with healthy cells expressing physiological levels of CD47. Accordingly, a κλ body administered to non-human primates showed a typical IgG pharmacokinetic profile and was well tolerated. Importantly, κλ bodies preserve their tumoricidal capabilities in the presence of a CD47 antigen sink. Thus, dual-targeting κλ bodies allow for efficacious yet safe targeting of CD47 in cancer. Such a bispecific design could be applied to limit the extent of neutralization of other ubiquitously expressed therapeutic targets.
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Affiliation(s)
- Elie Dheilly
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | - Valéry Moine
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | - Lucile Broyer
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | | | - Zoë Johnson
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | - Anne Papaioannou
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | - Laura Cons
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | | | - Stefano Majocchi
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | - Robert Nelson
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | | | - Walter Ferlin
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
| | | | - Nicolas Fischer
- Novimmune SA, 14 chemin des Aulx, 1228 Plan-les-Ouates, Switzerland
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27
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Wang X, Yi B, Mu K, Shen N, Zhu Y, Hu Q, Lu Y. Identification of a novel de novo ANK1 R1426* nonsense mutation in a Chinese family with hereditary spherocytosis by NGS. Oncotarget 2017; 8:96791-96797. [PMID: 29228571 PMCID: PMC5722523 DOI: 10.18632/oncotarget.18243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 05/15/2017] [Indexed: 12/22/2022] Open
Abstract
Hereditary spherocytosis (HS) is an inherited heterogeneous hemolytic anemia, characterized by the presence of spherical-shaped erythrocytes on the peripheral blood smear, and the clinical manifestation ranges from asymptomatic to severely anemic, and transfusion-dependent patients. Mutations in at least five genes (ANK1, EPB42, SLC4A1, SPTA1, and SPTB) have been identified so far, and mutations of ANK1 gene are responsible for the majority of all HS cases. In this study, targeted next generation sequencing (NGS) was applied to identify a novel de novo ANK1 c.4276C>T (p.R1426*) nonsense mutation in a Chinese family with a patient of HS who was diagnosed clinically with only 10% spherical-shaped erythrocytes in the peripheral blood and received splenectomy. Sanger sequencing further confirmed that only the patient carried heterozygous ANK1 c.4276C>T nonsense mutation, while none of his parents or his young brother carried this mutation. Moreover, consistent with the genetic findings, the anemia was ameliorated after splenectomy. RBCs increased from 2.74 × 1012/L pre-surgery to 4.76 × 1012/L one month post-surgery, and hemoglobin increased from 66g/L to 126g/L respectively. This is the first report of ANK1 c.4276C>T (p.R1426*) heterozygous nonsense mutation responsible for HS. Our results also demonstrate that targeted NGS may provide a powerful approach for rapid genetic test of HS.
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Affiliation(s)
- Xiong Wang
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Bin Yi
- Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ketao Mu
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Na Shen
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yaowu Zhu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Qun Hu
- Department of Pediatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yanjun Lu
- Department of Laboratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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28
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Mordue KE, Hawley BR, Satchwell TJ, Toye AM. CD47 surface stability is sensitive to actin disruption prior to inclusion within the band 3 macrocomplex. Sci Rep 2017; 7:2246. [PMID: 28533511 PMCID: PMC5440412 DOI: 10.1038/s41598-017-02356-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 04/10/2017] [Indexed: 02/04/2023] Open
Abstract
CD47 is an important 'marker of self' protein with multiple isoforms produced though alternative splicing that exhibit tissue-specific expression. Mature erythrocytes express CD47 isoform 2 only, with membrane stability of this version dependent on inclusion within the band 3 macrocomplex, via protein 4.2. At present a paucity of information exists regarding the associations and trafficking of the CD47 isoforms during erythropoiesis. We show that CD47 isoform 2 is the predominant version maintained at the surface of expanding and terminally differentiating erythroblasts. CD47 isoforms 3 and 4 are expressed in all cell types tested except mature erythrocytes, but do not reach the plasma membrane in erythroblasts and are degraded by the orthochromatic stage of differentiation. To identify putative CD47 interactants, immunoprecipitation combined with Nano LC-MS/MS mass spectrometry was conducted on the erythroleukaemic K562 cell line, expanding and terminally differentiating primary erythroblasts and mature erythrocytes. Results indicate that prior to incorporation into the band 3 macrocomplex, CD47 associates with actin-binding proteins and we confirm that CD47 membrane stability is sensitive to actin disrupting drugs. Maintenance of CD47 at the cell surface was also influenced by dynamin, with sensitivity to dynamin disruption prolonged relative to that of actin during erythropoiesis.
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Affiliation(s)
- Kathryn E Mordue
- School of Biochemistry, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, United Kingdom
- Bristol Institute of Transfusion Sciences, NHSBT, Filton, BS34 7QH, United Kingdom
| | - Bethan R Hawley
- School of Biochemistry, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, United Kingdom
- Bristol Institute of Transfusion Sciences, NHSBT, Filton, BS34 7QH, United Kingdom
- National Institute for Health Research (NIHR) Blood and Transplant Unit in Red Blood Cell Products at the University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Timothy J Satchwell
- School of Biochemistry, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, United Kingdom
- Bristol Institute of Transfusion Sciences, NHSBT, Filton, BS34 7QH, United Kingdom
- National Institute for Health Research (NIHR) Blood and Transplant Unit in Red Blood Cell Products at the University of Bristol, Bristol, BS8 1TD, United Kingdom
| | - Ashley M Toye
- School of Biochemistry, Biomedical Sciences Building, University Walk, Bristol, BS8 1TD, United Kingdom.
- Bristol Institute of Transfusion Sciences, NHSBT, Filton, BS34 7QH, United Kingdom.
- National Institute for Health Research (NIHR) Blood and Transplant Unit in Red Blood Cell Products at the University of Bristol, Bristol, BS8 1TD, United Kingdom.
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29
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Schulze AB, Schmidt LH, Baie L, Heitkötter B, Kuemmel A, Mohr M, Buhl R, Hillmann H, Geißler G, Kelsch R, Görlich D, Berdel WE, Hartmann W, Wiewrodt R. Rhesus CE expression on patient red blood cells is an independent prognostic factor for adenocarcinoma of the lung. CLINICAL RESPIRATORY JOURNAL 2017; 12:1106-1117. [PMID: 28398662 DOI: 10.1111/crj.12638] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 02/27/2017] [Accepted: 03/20/2017] [Indexed: 12/16/2022]
Abstract
OBJECTIVES The influence of blood group antigens on cancerogenesis is shown for distinct tumor types, yet the impact of Rhesus blood group antigens in lung cancer is not clarified. MATERIALS AND METHODS To investigate the impact of Rhesus blood groups a non-small cell lung cancer (NSCLC) collective (n = 1047) was analyzed retrospectively. Using a second cohort of n = 340 primarily operated stage I-III NSCLC patients, we evaluated immunohistochemistry of CD47-antibody stained tissue samples in correlation to histopathologic subtype and Rhesus blood group. RESULTS AND CONCLUSION In 516 of 1047 patients blood group data were available. Seven different RhCE phenotypes were grouped as "··ee," "ccE·," and "C·E·." Adenocarcinoma patients with Rh "··ee" revealed improved overall survival (29 (21.2-36.8) m; HR 1.00 [index]) compared with Rh "ccE·" (19 (1.9-36.1) m; HR 1.76 [1.15-2.70]) and Rh "C·E·" (10 (7.4-12.6) m; HR 2.65 [1.70-4.12]) univariately (P < .001) and multivariately (P < .001). Rh "··ee" showed reduced incidence of CNS-metastasis (P = .014) and metastasis count (P = .032) in stage IV adenocarcinoma. Immunohistochemistry associated CD47-positivity with adenocarcinomas (n = 340, P = .048). In n = 51 cases blood group data were available. The prognostic effect of Rh "··ee" compared with Rh "ccE·" and Rh "C·E·" was stated (P = .001), foremost in CD47-positive adenocarcinomas (Rh "··ee" vs. Rh "ccE·" and Rh "C·E·," P = .008). Inversely Rh "ccE·" or Rh "C·E·" was found beneficial in CD47-negative non-adenocarcinomas (P = .046). Phenotypic RhCE expression may be an independent prognostic factor for overall survival in adeno-NSCLC. We hypothesize an erythrocytic-immunologic interaction with tumor tissue, possibly altered by RhCE and CD47, resulting in a metastatic prone condition.
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Affiliation(s)
- A B Schulze
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
| | - L H Schmidt
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
| | - L Baie
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
| | - B Heitkötter
- Gerhard Domagk Institute of Pathology, University Hospital Muenster, Muenster, Germany
| | - A Kuemmel
- III. Medical Department, Hematology, Oncology and Pneumology, University Hospital Mainz, Mainz, Germany
| | - M Mohr
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
| | - R Buhl
- III. Medical Department, Hematology, Oncology and Pneumology, University Hospital Mainz, Mainz, Germany
| | - H Hillmann
- Institute of Transfusion Medicine and Transplantation Immunology, University Hospital Muenster, Muenster, Germany
| | - G Geißler
- Institute of Transfusion Medicine and Transplantation Immunology, University Hospital Muenster, Muenster, Germany
| | - R Kelsch
- Institute of Transfusion Medicine and Transplantation Immunology, University Hospital Muenster, Muenster, Germany
| | - D Görlich
- Institute of Biostatistics and Clinical Research, Westfaelische Wilhelms-Universitaet Muenster, Muenster, Germany
| | - W E Berdel
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
| | - W Hartmann
- Gerhard Domagk Institute of Pathology, University Hospital Muenster, Muenster, Germany
| | - R Wiewrodt
- Department of Medicine A, Hematology, Oncology and Pneumology, University Hospital Muenster, Muenster, Germany
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30
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Sosale NG, Ivanovska II, Tsai RK, Swift J, Hsu JW, Alvey CM, Zoltick PW, Discher DE. "Marker of Self" CD47 on lentiviral vectors decreases macrophage-mediated clearance and increases delivery to SIRPA-expressing lung carcinoma tumors. Mol Ther Methods Clin Dev 2016; 3:16080. [PMID: 28053997 PMCID: PMC5148596 DOI: 10.1038/mtm.2016.80] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 10/05/2016] [Accepted: 10/06/2016] [Indexed: 02/08/2023]
Abstract
Lentiviruses infect many cell types and are now widely used for gene delivery in vitro, but in vivo uptake of these foreign vectors by macrophages is a limitation. Lentivectors are produced here from packaging cells that overexpress "Marker of Self" CD47, which inhibits macrophage uptake of cells when prophagocytic factors are also displayed. Single particle analyses show "hCD47-Lenti" display properly oriented human-CD47 for interactions with the macrophage's inhibitory receptor SIRPA. Macrophages derived from human and NOD/SCID/Il2rg-/- (NSG) mice show a SIRPA-dependent decrease in transduction, i.e., transgene expression, by hCD47-Lenti compared to control Lenti. Consistent with known "Self" signaling pathways, macrophage transduction by control Lenti is decreased by drug inhibition of Myosin-II to the same levels as hCD47-Lenti. In contrast, human lung carcinoma cells express SIRPA and use it to enhance transduction by hCD47-Lenti- as illustrated by more efficient gene deletion using CRISPR/Cas9. Intravenous injection of hCD47-Lenti into NSG mice shows hCD47 prolongs circulation, unless a blocking anti-SIRPA is preinjected. In vivo transduction of spleen and liver macrophages also decreases for hCD47-Lenti while transduction of lung carcinoma xenografts increases. hCD47 could be useful when macrophage uptake is limiting on other viral vectors that are emerging in cancer treatments (e.g., Measles glycoprotein-pseudotyped lentivectors) and also in targeting various SIRPA-expressing tumors such as glioblastomas.
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Affiliation(s)
- Nisha G Sosale
- Biophysical Engineering Labs, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Irena I Ivanovska
- Biophysical Engineering Labs, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Richard K Tsai
- Biophysical Engineering Labs, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Joe Swift
- Biophysical Engineering Labs, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jake W Hsu
- Biophysical Engineering Labs, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Cory M Alvey
- Pharmacological Sciences Graduate Group, University of Pennsylvania, Pennsylvania, USA
| | - Philip W Zoltick
- Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Dennis E Discher
- Biophysical Engineering Labs, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Pharmacological Sciences Graduate Group, University of Pennsylvania, Pennsylvania, USA
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31
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Petrova PS, Viller NN, Wong M, Pang X, Lin GHY, Dodge K, Chai V, Chen H, Lee V, House V, Vigo NT, Jin D, Mutukura T, Charbonneau M, Truong T, Viau S, Johnson LD, Linderoth E, Sievers EL, Maleki Vareki S, Figueredo R, Pampillo M, Koropatnick J, Trudel S, Mbong N, Jin L, Wang JCY, Uger RA. TTI-621 (SIRPαFc): A CD47-Blocking Innate Immune Checkpoint Inhibitor with Broad Antitumor Activity and Minimal Erythrocyte Binding. Clin Cancer Res 2016; 23:1068-1079. [PMID: 27856600 DOI: 10.1158/1078-0432.ccr-16-1700] [Citation(s) in RCA: 208] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 10/19/2016] [Accepted: 10/23/2016] [Indexed: 11/16/2022]
Abstract
Purpose: The ubiquitously expressed transmembrane glycoprotein CD47 delivers an anti-phagocytic (do not eat) signal by binding signal-regulatory protein α (SIRPα) on macrophages. CD47 is overexpressed in cancer cells and its expression is associated with poor clinical outcomes. TTI-621 (SIRPαFc) is a fully human recombinant fusion protein that blocks the CD47-SIRPα axis by binding to human CD47 and enhancing phagocytosis of malignant cells. Blockade of this inhibitory axis using TTI-621 has emerged as a promising therapeutic strategy to promote tumor cell eradication.Experimental Design: The ability of TTI-621 to promote macrophage-mediated phagocytosis of human tumor cells was assessed using both confocal microscopy and flow cytometry. In vivo antitumor efficacy was evaluated in xenograft and syngeneic models and the role of the Fc region in antitumor activity was evaluated using SIRPαFc constructs with different Fc tails.Results: TTI-621 enhanced macrophage-mediated phagocytosis of both hematologic and solid tumor cells, while sparing normal cells. In vivo, TTI-621 effectively controlled the growth of aggressive AML and B lymphoma xenografts and was efficacious in a syngeneic B lymphoma model. The IgG1 Fc tail of TTI-621 plays a critical role in its antitumor activity, presumably by engaging activating Fcγ receptors on macrophages. Finally, TTI-621 exhibits minimal binding to human erythrocytes, thereby differentiating it from CD47 blocking antibodies.Conclusions: These data indicate that TTI-621 is active across a broad range of human tumors. These results further establish CD47 as a critical regulator of innate immune surveillance and form the basis for clinical development of TTI-621 in multiple oncology indications. Clin Cancer Res; 23(4); 1068-79. ©2016 AACR.
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Affiliation(s)
| | | | - Mark Wong
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Xinli Pang
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Gloria H Y Lin
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Karen Dodge
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Vien Chai
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Hui Chen
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Vivian Lee
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Violetta House
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Noel T Vigo
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Debbie Jin
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | | | | | - Tran Truong
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Stephane Viau
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Lisa D Johnson
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Emma Linderoth
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Eric L Sievers
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada
| | - Saman Maleki Vareki
- London Regional Cancer Program, London Health Sciences Centre, Lawson Heath Research Institute, London, Ontario, Canada.,Department of Oncology, University of Western Ontario, London, Ontario, Canada
| | - Rene Figueredo
- London Regional Cancer Program, London Health Sciences Centre, Lawson Heath Research Institute, London, Ontario, Canada.,Department of Oncology, University of Western Ontario, London, Ontario, Canada
| | - Macarena Pampillo
- London Regional Cancer Program, London Health Sciences Centre, Lawson Heath Research Institute, London, Ontario, Canada
| | - James Koropatnick
- London Regional Cancer Program, London Health Sciences Centre, Lawson Heath Research Institute, London, Ontario, Canada.,Department of Oncology, University of Western Ontario, London, Ontario, Canada
| | - Suzanne Trudel
- Princess Margaret Cancer Center, University Health Network (UHN), Toronto, Ontario, Canada
| | - Nathan Mbong
- Princess Margaret Cancer Center, University Health Network (UHN), Toronto, Ontario, Canada
| | - Liqing Jin
- Princess Margaret Cancer Center, University Health Network (UHN), Toronto, Ontario, Canada
| | - Jean C Y Wang
- Princess Margaret Cancer Center, University Health Network (UHN), Toronto, Ontario, Canada.,Division of Medical Oncology and Hematology, Department of Medicine, UHN, and Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Robert A Uger
- Trillium Therapeutics Inc., Mississauga, Ontario, Canada.
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32
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Polin H, Pelc-Klopotowska M, Danzer M, Suessner S, Gabriel C, Wilflingseder J, Żmudzin A, Orzińska A, Guz K, Michalewska B, Brojer E. Compound heterozygosity of two novelRHAGalleles leads to a considerable disruption of the Rh complex. Transfusion 2016; 56:950-5. [DOI: 10.1111/trf.13476] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 10/13/2015] [Accepted: 11/19/2015] [Indexed: 01/14/2023]
Affiliation(s)
- Helene Polin
- Red Cross Transfusion Service of Upper Austria; Linz Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology; Linz Austria
| | | | - Martin Danzer
- Red Cross Transfusion Service of Upper Austria; Linz Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology; Linz Austria
| | - Susanne Suessner
- Red Cross Transfusion Service of Upper Austria; Linz Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology; Linz Austria
| | - Christian Gabriel
- Red Cross Transfusion Service of Upper Austria; Linz Austria
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology; Linz Austria
| | | | | | | | - Katarzyna Guz
- Institute of Hematology and Transfusion Medicine; Warsaw Poland
| | | | - Ewa Brojer
- Institute of Hematology and Transfusion Medicine; Warsaw Poland
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Azouzi S, Collec E, Mohandas N, An X, Colin Y, Le Van Kim C. The human Kell blood group binds the erythroid 4.1R protein: new insights into the 4.1R-dependent red cell membrane complex. Br J Haematol 2015; 171:862-71. [PMID: 26455906 DOI: 10.1111/bjh.13778] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 07/29/2015] [Indexed: 12/21/2022]
Abstract
Protein 4.1R plays an important role in maintaining the mechanical properties of the erythrocyte membrane. We analysed the expression of Kell blood group protein in erythrocytes from a patient with hereditary elliptocytosis associated with complete 4.1R deficiency (4.1(-) HE). Flow cytometry and Western blot analyses revealed a severe reduction of Kell. In vitro pull down and co-immunoprecipitation experiments from erythrocyte membranes showed a direct interaction between Kell and 4.1R. Using different recombinant domains of 4.1R and the cytoplasmic domain of Kell, we demonstrated that the R(46) R motif in the juxta-membrane region of Kell binds to lobe B of the 4.1R FERM domain. We also observed that 4.1R deficiency is associated with a reduction of XK and DARC (also termed ACKR1) proteins, the absence of the glycosylated form of the urea transporter B and a slight decrease of band 3. The functional alteration of the 4.1(-) HE erythrocyte membranes was also determined by measuring various transport activities. We documented a slower rate of HCO3 (-) /Cl(-) exchange, but normal water and ammonia transport across erythrocyte membrane in the absence of 4.1. These findings provide novel insights into the structural organization of blood group antigen proteins into the 4.1R complex of the human red cell membrane.
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Affiliation(s)
- Slim Azouzi
- Institut National de la Transfusion Sanguine, Paris, France.,Inserm, UMR_S1134, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Laboratory of Excellence GR-Ex, New York, NY, USA
| | - Emmanuel Collec
- Institut National de la Transfusion Sanguine, Paris, France.,Inserm, UMR_S1134, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Laboratory of Excellence GR-Ex, New York, NY, USA
| | | | - Xiuli An
- New York Blood Center, New York, NY, USA
| | - Yves Colin
- Institut National de la Transfusion Sanguine, Paris, France.,Inserm, UMR_S1134, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Laboratory of Excellence GR-Ex, New York, NY, USA
| | - Caroline Le Van Kim
- Institut National de la Transfusion Sanguine, Paris, France.,Inserm, UMR_S1134, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France.,Laboratory of Excellence GR-Ex, New York, NY, USA
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34
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Olumuyiwa-Akeredolu OOO, Pretorius E. Platelet and red blood cell interactions and their role in rheumatoid arthritis. Rheumatol Int 2015; 35:1955-64. [PMID: 26059943 DOI: 10.1007/s00296-015-3300-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/26/2015] [Indexed: 12/23/2022]
Abstract
Cytokines, lymphocytes, platelets and several biomolecules have long been implicated in the pathology of rheumatoid arthritis (RA), and the influences of antibody production and tagging, and cytokine, chemokine and enzyme production at specific rheumatoid joints were thought to be exclusive to the advancement of disease parameters. Another role player in RA is red blood cells (RBCs) which, of late, have been found to be involved in RA pathobiology, as there is a positive correlation between RBC counts and joint pathology, as well as with inflammatory biomarkers in the disease. There is also an association between RBC distribution width and the incidence of myocardial infarction amongst RA patients, and there is a change in the lipid distribution within RBC membranes. Of late, certain RBC-associated factors with previously obscure roles and cell-derived particles thought to be inconsequential to the other constituents of plasma were found to be active biomolecular players. Several of these have been discovered to be present in or originating from RBCs. Their influences have been shown to involve in membrane dynamics that cause structural and functional changes in both platelets and RBCs. RBC-derived microparticles are emerging entities found to play direct roles in immunomodulation via interactions with other plasma cells. These correlations highlight the direct influences of RBCs on exacerbating RA pathology. This review will attempt to shed more light on how RBCs, in the true inflammatory milieu of RA, are playing an even greater role than previously assumed.
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Affiliation(s)
- Oore-Ofe O Olumuyiwa-Akeredolu
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Private Bag x323, Arcadia, 0007, South Africa
| | - Etheresia Pretorius
- Department of Physiology, Faculty of Health Sciences, University of Pretoria, Private Bag x323, Arcadia, 0007, South Africa.
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35
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Soto-Pantoja DR, Kaur S, Roberts DD. CD47 signaling pathways controlling cellular differentiation and responses to stress. Crit Rev Biochem Mol Biol 2015; 50:212-30. [PMID: 25708195 DOI: 10.3109/10409238.2015.1014024] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CD47 is a widely expressed integral membrane protein that serves as the counter-receptor for the inhibitory phagocyte receptor signal-regulatory protein-α (SIRPα) and as a signaling receptor for the secreted matricellular protein thrombospondin-1. Recent studies employing mice and somatic cells lacking CD47 have revealed important pathophysiological functions of CD47 in cardiovascular homeostasis, immune regulation, resistance of cells and tissues to stress and chronic diseases of aging including cancer. With the emergence of experimental therapeutics targeting CD47, a more thorough understanding of CD47 signal transduction is essential. CD47 lacks a substantial cytoplasmic signaling domain, but several cytoplasmic binding partners have been identified, and lateral interactions of CD47 with other membrane receptors play important roles in mediating signaling resulting from the binding of thrombospondin-1. This review addresses recent advances in identifying the lateral binding partners, signal transduction pathways and downstream transcription networks regulated through CD47 in specific cell lineages. Major pathways regulated by CD47 signaling include calcium homeostasis, cyclic nucleotide signaling, nitric oxide and hydrogen sulfide biosynthesis and signaling and stem cell transcription factors. These pathways and other undefined proximal mediators of CD47 signaling regulate cell death and protective autophagy responses, mitochondrial biogenesis, cell adhesion and motility and stem cell self-renewal. Although thrombospondin-1 is the best characterized agonist of CD47, the potential roles of other members of the thrombospondin family, SIRPα and SIRPγ binding and homotypic CD47 interactions as agonists or antagonists of signaling through CD47 should also be considered.
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Affiliation(s)
- David R Soto-Pantoja
- a Laboratory of Pathology , Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda , MD , USA
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36
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Satchwell TJ, Hawley BR, Bell AJ, Ribeiro ML, Toye AM. The cytoskeletal binding domain of band 3 is required for multiprotein complex formation and retention during erythropoiesis. Haematologica 2014; 100:133-42. [PMID: 25344524 DOI: 10.3324/haematol.2014.114538] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Band 3 is the most abundant protein in the erythrocyte membrane and forms the core of a major multiprotein complex. The absence of band 3 in human erythrocytes has only been reported once, in the homozygous band 3 Coimbra patient. We used in vitro culture of erythroblasts derived from this patient, and separately short hairpin RNA-mediated depletion of band 3, to investigate the development of a band 3-deficient erythrocyte membrane and to specifically assess the stability and retention of band 3 dependent proteins in the absence of this core protein during terminal erythroid differentiation. Further, using lentiviral transduction of N-terminally green fluorescent protein-tagged band 3, we demonstrated the ability to restore expression of band 3 to normal levels and to rescue secondary deficiencies of key proteins including glycophorin A, protein 4.2, CD47 and Rh proteins arising from the absence of band 3 in this patient. By transducing band 3-deficient erythroblasts from this patient with band 3 mutants with absent or impaired ability to associate with the cytoskeleton we also demonstrated the importance of cytoskeletal connectivity for retention both of band 3 and of its associated dependent proteins within the reticulocyte membrane during the process of erythroblast enucleation.
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Affiliation(s)
- Timothy J Satchwell
- School of Biochemistry, Medical Sciences Building, University Walk, Bristol, UK Bristol Institute of Transfusion Sciences, NHSBT Filton, Bristol, UK
| | - Bethan R Hawley
- School of Biochemistry, Medical Sciences Building, University Walk, Bristol, UK Bristol Institute of Transfusion Sciences, NHSBT Filton, Bristol, UK
| | - Amanda J Bell
- School of Biochemistry, Medical Sciences Building, University Walk, Bristol, UK
| | - M Leticia Ribeiro
- Servico de Hematologia Clinica, Centro Hospitalar e Universitario de Coimbra, Portugal
| | - Ashley M Toye
- School of Biochemistry, Medical Sciences Building, University Walk, Bristol, UK Bristol Institute of Transfusion Sciences, NHSBT Filton, Bristol, UK
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37
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Goossens D, da Silva N, Metral S, Cortes U, Callebaut I, Picot J, Mouro-Chanteloup I, Cartron JP. Mice expressing RHAG and RHD human blood group genes. PLoS One 2013; 8:e80460. [PMID: 24260394 PMCID: PMC3832391 DOI: 10.1371/journal.pone.0080460] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 10/02/2013] [Indexed: 11/18/2022] Open
Abstract
Anti-RhD prophylaxis of haemolytic disease of the fetus and newborn (HDFN) is highly effective, but as the suppressive mechanism remains uncertain, a mouse model would be of interest. Here we have generated transgenic mice expressing human RhAG and RhD erythrocyte membrane proteins in the presence and, for human RhAG, in the absence, of mouse Rhag. Human RhAG associates with mouse Rh but not mouse Rhag on red blood cells. In Rhag knockout mice transgenic for human RHAG, the mouse Rh protein is “rescued” (re-expressed), and co-immunoprecipitates with human RhAG, indicating the presence of hetero-complexes which associate mouse and human proteins. RhD antigen was expressed from a human RHD gene on a BAC or from RHD cDNA under control of β-globin regulatory elements. RhD was never observed alone, strongly indicative that its expression absolutely depends on the presence of transgenic human RhAG. This first expression of RhD in mice is an important step in the creation of a mouse model of RhD allo-immunisation and HDFN, in conjunction with the Rh-Rhag knockout mice we have developed previously.
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Affiliation(s)
- Dominique Goossens
- Institut National de la Transfusion Sanguine, Paris, France
- Inserm UMR_S 665, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S665, Paris, France
- * E-mail:
| | - Nelly da Silva
- Institut National de la Transfusion Sanguine, Paris, France
| | - Sylvain Metral
- Institut National de la Transfusion Sanguine, Paris, France
| | - Ulrich Cortes
- Institut National de la Transfusion Sanguine, Paris, France
| | - Isabelle Callebaut
- IInstitut de Minéralogie et de Physique des milieux Condensés UMR 7590 CNRS, Université Pierre et Marie Curie, Paris, France
| | - Julien Picot
- Institut National de la Transfusion Sanguine, Paris, France
- Inserm UMR_S 665, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S665, Paris, France
| | - Isabelle Mouro-Chanteloup
- Institut National de la Transfusion Sanguine, Paris, France
- Inserm UMR_S 665, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, UMR-S665, Paris, France
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38
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Machnicka B, Czogalla A, Hryniewicz-Jankowska A, Bogusławska DM, Grochowalska R, Heger E, Sikorski AF. Spectrins: a structural platform for stabilization and activation of membrane channels, receptors and transporters. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2013; 1838:620-34. [PMID: 23673272 DOI: 10.1016/j.bbamem.2013.05.002] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 04/25/2013] [Accepted: 05/06/2013] [Indexed: 12/22/2022]
Abstract
This review focuses on structure and functions of spectrin as a major component of the membrane skeleton. Recent advances on spectrin function as an interface for signal transduction mediation and a number of data concerning interaction of spectrin with membrane channels, adhesion molecules, receptors and transporters draw a picture of multifaceted protein. Here, we attempted to show the current depiction of multitask role of spectrin in cell physiology. This article is part of a Special Issue entitled: Reciprocal influences between cell cytoskeleton and membrane channels, receptors and transporters. Guest Editor: Jean Claude Hervé.
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Affiliation(s)
- Beata Machnicka
- University of Zielona Góra, Faculty of Biological Sciences, Poland
| | | | | | | | | | - Elżbieta Heger
- University of Zielona Góra, Faculty of Biological Sciences, Poland
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39
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Hu CMJ, Fang RH, Luk BT, Chen KN, Carpenter C, Gao W, Zhang K, Zhang L. 'Marker-of-self' functionalization of nanoscale particles through a top-down cellular membrane coating approach. NANOSCALE 2013; 5:2664-8. [PMID: 23462967 PMCID: PMC3667603 DOI: 10.1039/c3nr00015j] [Citation(s) in RCA: 215] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
We investigate the 'marker-of-self' functionalization of nanoparticles through coating of natural RBC membranes. The membrane translocation approach is shown to be highly efficient and bestows nanoparticles with correctly oriented and functional immunomodulatory proteins such as CD47 at equivalent density to natural RBCs.
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Affiliation(s)
- Che-Ming J. Hu
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- Moores Cancer Center, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
| | - Ronnie H. Fang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- Moores Cancer Center, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
| | - Brian T. Luk
- Moores Cancer Center, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- Department of Bioengineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
| | - Kevin N.H. Chen
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
| | - Cody Carpenter
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
| | - Weiwei Gao
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- Moores Cancer Center, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
| | - Kang Zhang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- Department of Ophthalmology and Shiley Eye Center, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510275, China
| | - Liangfang Zhang
- Department of NanoEngineering, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
- Moores Cancer Center, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA. Tel: 1-858-246-0999
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40
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Jauchem JR, Bernhard JA, Cerna CZ, Lim TY, Seaman RL, Tarango M. Effects of a TASER® conducted energy weapon on the circulating red-blood-cell population and other factors in Sus scrofa. Forensic Sci Med Pathol 2013; 9:308-20. [PMID: 23543463 DOI: 10.1007/s12024-013-9423-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2013] [Indexed: 10/27/2022]
Abstract
In previous studies hematocrit has been consistently increased in an anesthetized animal model after exposures to TASER(®) conducted energy weapons (CEWs). In the present study we analyzed changes in blood cell counts and red blood cell membrane proteins following two 30-s applications of a TASER C2 device (which is designed for civilian use). Hematocrit increased significantly from 33.2 ± 2.4 (mean ± SD) to 42.8 ± 4.6 % immediately after CEW exposure of eleven pigs (Sus scrofa). Red blood cell count increased significantly from 6.10 ± 0.55 × 10(12)/L to 7.45 ± 0.94 × 10(12)/L, and mean corpuscular volume increased significantly from 54.5 ± 2.4 fl to 57.8 ± 2.6 fl. Mean corpuscular hemoglobin concentration decreased significantly from 20.5 ± 0.7 to 18.5 ± 0.6 mM. Thirty protein spots (from two-dimensional sodium dodecyl sulfate polyacrylamide gel electrophoresis, selected for detailed comparison) exhibited greater densities 30-min post-exposure compared with pre-exposure values. A greater number of echinocytes were observed following CEW exposure. On the basis of these results it appears that, during the strong muscle contractions produced by TASER CEWs, a specific population of red blood cells (RBCs) may be released from the spleen or other reservoirs within the body. The total time of CEW exposure in the present study was relatively long compared with exposures in common law-enforcement scenarios. Despite statistically significant changes in red blood cell counts (and other measures directly related to RBCs), the alterations were short-lived. The transient nature of the changes would be likely to counteract any potentially detrimental effects.
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Affiliation(s)
- James R Jauchem
- Bio-Effects Division, Human Effectiveness Directorate, 711th Human Performance Wing, U.S. Air Force Research Laboratory, Fort Sam Houston, TX 78234, USA.
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41
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Rodriguez PL, Harada T, Christian DA, Pantano DA, Tsai RK, Discher DE. Minimal "Self" peptides that inhibit phagocytic clearance and enhance delivery of nanoparticles. Science 2013; 339:971-5. [PMID: 23430657 PMCID: PMC3966479 DOI: 10.1126/science.1229568] [Citation(s) in RCA: 704] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Foreign particles and cells are cleared from the body by phagocytes that must also recognize and avoid clearance of "self" cells. The membrane protein CD47 is reportedly a "marker of self" in mice that impedes phagocytosis of self by signaling through the phagocyte receptor CD172a. Minimal "Self" peptides were computationally designed from human CD47 and then synthesized and attached to virus-size particles for intravenous injection into mice that express a CD172a variant compatible with hCD47. Self peptides delay macrophage-mediated clearance of nanoparticles, which promotes persistent circulation that enhances dye and drug delivery to tumors. Self-peptide affinity for CD172a is near the optimum measured for human CD172a variants, and Self peptide also potently inhibits nanoparticle uptake mediated by the contractile cytoskeleton. The reductionist approach reveals the importance of human Self peptides and their utility in enhancing drug delivery and imaging.
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Affiliation(s)
- Pia L. Rodriguez
- Molecular and Cell Biophysics and NanoBioPolymers Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Takamasa Harada
- Molecular and Cell Biophysics and NanoBioPolymers Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - David A. Christian
- Molecular and Cell Biophysics and NanoBioPolymers Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Diego A. Pantano
- Molecular and Cell Biophysics and NanoBioPolymers Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Richard K. Tsai
- Molecular and Cell Biophysics and NanoBioPolymers Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Dennis E. Discher
- Molecular and Cell Biophysics and NanoBioPolymers Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
- Pharmacological Sciences Graduate Group, University of Pennsylvania, Philadelphia, PA 19104, USA
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42
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CD47: A Cell Surface Glycoprotein Which Regulates Multiple Functions of Hematopoietic Cells in Health and Disease. ISRN HEMATOLOGY 2013; 2013:614619. [PMID: 23401787 PMCID: PMC3564380 DOI: 10.1155/2013/614619] [Citation(s) in RCA: 161] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 11/19/2012] [Indexed: 12/22/2022]
Abstract
Interactions between cells and their surroundings are important for proper function and homeostasis in a multicellular organism. These interactions can either be established between the cells and molecules in their extracellular milieu, but also involve interactions between cells. In all these situations, proteins in the plasma membranes are critically involved to relay information obtained from the exterior of the cell. The cell surface glycoprotein CD47 (integrin-associated protein (IAP)) was first identified as an important regulator of integrin function, but later also was shown to function in ways that do not necessarily involve integrins. Ligation of CD47 can induce intracellular signaling resulting in cell activation or cell death depending on the exact context. By binding to another cell surface glycoprotein, signal regulatory protein alpha (SIRPα), CD47 can regulate the function of cells in the monocyte/macrophage lineage. In this spotlight paper, several functions of CD47 will be reviewed, although some functions may be more briefly mentioned. Focus will be on the ways CD47 regulates hematopoietic cells and functions such as CD47 signaling, induction of apoptosis, and regulation of phagocytosis or cell-cell fusion.
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43
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Per-Arne O. Role of CD47 and Signal Regulatory Protein Alpha (SIRPα) in Regulating the Clearance of Viable or Aged Blood Cells. ACTA ACUST UNITED AC 2012; 39:315-20. [PMID: 23801922 DOI: 10.1159/000342537] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 08/14/2012] [Indexed: 01/11/2023]
Abstract
SUMMARY The ubiquitously expressed cell surface glycoprotein CD47 is expressed by virtually all cells in the host, where it can function to regulate integrin-mediated responses, or constitute an important part of the erythrocyte band 3/Rh multi-protein complex. In addition, CD47 can protect viable cells from being phagocytosed by macrophages or dendritic cells. The latter mechanism is dependent on the interaction between target cell CD47 and SIRPα on the phagocyte. In this context, SIRPα functions to inhibit prophagocytic signaling from Fcγ receptors, complement receptors, and LDL receptor-related protein-1 (LRP-1), but not scavenger receptors. The expression level and/or distribution of CD47 may be altered on the surface of apoptotic/senescent cells, rendering the phagocytosis inhibitory function of the CD47/SIRPα interaction reduced or eliminated. Instead, the interaction between these 2 proteins may serve to enhance the binding of apoptotic/senescent target cells to the phagocyte to promote phagocytosis.
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Affiliation(s)
- Oldenborg Per-Arne
- Department of Integrative Medical Biology, Section for Histology and Cell Biology, Umeå University, Umeå, Sweden
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44
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Mankelow TJ, Satchwell TJ, Burton NM. Refined views of multi-protein complexes in the erythrocyte membrane. Blood Cells Mol Dis 2012; 49:1-10. [PMID: 22465511 PMCID: PMC4443426 DOI: 10.1016/j.bcmd.2012.03.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Accepted: 02/27/2012] [Indexed: 12/20/2022]
Abstract
The erythrocyte membrane has been extensively studied, both as a model membrane system and to investigate its role in gas exchange and transport. Much is now known about the protein components of the membrane, how they are organised into large multi-protein complexes and how they interact with each other within these complexes. Many links between the membrane and the cytoskeleton have also been delineated and have been demonstrated to be crucial for maintaining the deformability and integrity of the erythrocyte. In this study we have refined previous, highly speculative molecular models of these complexes by including the available data pertaining to known protein-protein interactions. While the refined models remain highly speculative, they provide an evolving framework for visualisation of these important cellular structures at the atomic level.
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Affiliation(s)
- T J Mankelow
- Bristol Institute for Transfusion Sciences, N.H.S. Blood & Transplant, UK
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45
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Flatt JF, Musa RH, Ayob Y, Hassan A, Asidin N, Yahya NM, Mathlouthi R, Thornton N, Anstee DJ, Bruce LJ. Study of the D-- phenotype reveals erythrocyte membrane alterations in the absence of RHCE. Br J Haematol 2012; 158:262-273. [PMID: 22571328 DOI: 10.1111/j.1365-2141.2012.09149.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2012] [Accepted: 03/27/2012] [Indexed: 02/04/2023]
Abstract
Red cells with the D-- phenotype do not express the RHCE protein because of mutations in both alleles of the RHCE gene. At present, little is known of the effect this has on the normal function of erythrocytes. In this study a group of five families belonging to a nomadic tribe in Malaysia were identified as carriers of the D-- haplotype. Analysis of homozygous individuals' genomic DNA showed two separate novel mutations. In four of the families, RHCE exons 1, 9 and 10 were present, while the 5th family possessed RHCE exons 1-3 and 10. Analysis of cDNA revealed hybrid transcripts, suggesting a gene conversion event with RHD, consistent with previously reported D-- mutations. Immunoblotting analysis of D-- erythrocyte membrane proteins found that Rh-associated glycoprotein (RHAG) migrates with altered electrophoretic mobility on sodium dodecyl sulphate polyacrylamide gel electrophoresis, consistent with increased glycosylation. Total amounts of Rh polypeptide in D-- membranes were comparable with controls, indicating that the exalted D antigen displayed by D-- red cells may be associated with altered surface epitope presentation. The adhesion molecules CD44 and CD47 are significantly reduced in D--. Together these results suggest that absence of RHCE polypeptide alters the structure and packing of the band 3/Rh macrocomplex.
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Affiliation(s)
- Joanna F Flatt
- Bristol Institute for Transfusion Sciences, N.H.S. Blood and Transplant, Filton, Bristol, UK
| | - Rozi H Musa
- Immunohaematology Division, National Blood Centre, Kuala Lumpur, Malaysia
| | - Yasmin Ayob
- Immunohaematology Division, National Blood Centre, Kuala Lumpur, Malaysia
| | - Afifah Hassan
- Immunohaematology Division, National Blood Centre, Kuala Lumpur, Malaysia
| | - Norhanim Asidin
- Immunohaematology Division, National Blood Centre, Kuala Lumpur, Malaysia
| | - Nurul M Yahya
- Immunohaematology Division, National Blood Centre, Kuala Lumpur, Malaysia
| | - Rosalind Mathlouthi
- International Blood Group Reference Laboratory, N.H.S. Blood and Transplant, Filton, Bristol, UK
| | - Nicole Thornton
- International Blood Group Reference Laboratory, N.H.S. Blood and Transplant, Filton, Bristol, UK
| | - David J Anstee
- Bristol Institute for Transfusion Sciences, N.H.S. Blood and Transplant, Filton, Bristol, UK
| | - Lesley J Bruce
- Bristol Institute for Transfusion Sciences, N.H.S. Blood and Transplant, Filton, Bristol, UK
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Kumar A, Xu J, Sung B, Kumar S, Yu D, Aggarwal BB, Mehta K. Evidence that GTP-binding domain but not catalytic domain of transglutaminase 2 is essential for epithelial-to-mesenchymal transition in mammary epithelial cells. Breast Cancer Res 2012; 14:R4. [PMID: 22225906 PMCID: PMC3496119 DOI: 10.1186/bcr3085] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Accepted: 01/06/2012] [Indexed: 12/26/2022] Open
Abstract
INTRODUCTION The expression of proinflammatory protein tissue transglutaminase 2 (TG2) is frequently upregulated in multiple cancer cell types. However, the exact role of TG2 in cancer cells is not well-understood. We recently initiated studies to determine the significance of TG2 in cancer cells and observed that sustained expression of TG2 resulted in epithelial-to-mesenchymal transition (EMT) and promoted cancer stem cell (CSC) traits in mammary epithelial cells. These results suggested that TG2 could serve as a promising therapeutic target for overcoming chemoresistance and inhibiting metastatic spread of cancer cells. METHODS Using various mutant constructs, we analyzed the activity of TG2 that is essential for promoting the EMT-CSC phenotype. RESULTS Our results suggest that catalytically inactive TG2 (TG2-C277S) is as effective as wild-type TG2 (TG2-WT) in inducing the EMT-CSC in mammary epithelial cells. In contrast, overexpression of a GTP-binding-deficient mutant (TG2-R580A) was completely incompetent in this regard. Moreover, TG2-dependent activation of the proinflammatory transcription factor NF-κB is deemed essential for promoting the EMT-CSC phenotype in mammary epithelial cells. CONCLUSIONS Our results suggest that the transamidation activity of TG2 is not essential for promoting its oncogenic functions and provide a strong rationale for developing small-molecule inhibitors to block GTP-binding pockets of TG2. Such inhibitors may have great potential for inhibiting the TG2-regulated pathways, reversing drug resistance and inhibiting the metastasis of cancer cells.
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Affiliation(s)
- Anupam Kumar
- Department of Experimental Therapeutics, The University of Texas M.D., Anderson Cancer Center, 1901 East Road, 4SCR3,1006, Houston, TX 77030, USA
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Genetet S, Ripoche P, Picot J, Bigot S, Delaunay J, Armari-Alla C, Colin Y, Mouro-Chanteloup I. Human RhAG ammonia channel is impaired by the Phe65Ser mutation in overhydrated stomatocytic red cells. Am J Physiol Cell Physiol 2011; 302:C419-28. [PMID: 22012326 DOI: 10.1152/ajpcell.00092.2011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In red cells, Rh-associated glycoprotein (RhAG) acts as an ammonia channel, as demonstrated by stopped-flow analysis of ghost intracellular pH (pH(i)) changes. Recently, overhydrated hereditary stomatocytosis (OHSt), a rare dominantly inherited hemolytic anemia, was found to be associated with a mutation (Phe65Ser or Ile61Arg) in RHAG. Ghosts from the erythrocytes of four of the OHSt patients with a Phe65Ser mutation were resealed with a pH-sensitive probe and submitted to ammonium gradients. Alkalinization rate constants, reflecting NH(3) transport through the channel and NH(3) diffusion unmediated by RhAG, were deduced from time courses of fluorescence changes. After subtraction of the constant value found for Rh(null) lacking RhAG, we observed that alkalinization rate constant values decreased ∼50% in OHSt compared with those of controls. Similar RhAG expression levels were found in control and OHSt. Since half of the expressed RhAG in OHSt most probably corresponds to the mutated form of RhAG, as expected from the OHSt heterozygous status, this dramatic decrease can be therefore related to the loss of function of the Phe65Ser-mutated RhAG monomer.
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Jeremy KP, Plummer ZE, Head DJ, Madgett TE, Sanders KL, Wallington A, Storry JR, Gilsanz F, Delaunay J, Avent ND. 4.1R-deficient human red blood cells have altered phosphatidylserine exposure pathways and are deficient in CD44 and CD47 glycoproteins. Haematologica 2011; 94:1354-61. [PMID: 19794081 DOI: 10.3324/haematol.2009.006585] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Protein 4.1R is an important component of the red cell membrane skeleton. It imparts structural integrity and has transmembrane signaling roles by direct interactions with transmembrane proteins and other membrane skeletal components, notably p55 and calmodulin. DESIGN AND METHODS Spontaneous and ligation-induced phosphatidylserine exposure on erythrocytes from two patients with 4.1R deficiency were studied, using CD47 glycoprotein and glycophorin C as ligands. We also looked for protein abnormalities in the 4.1R-based multiprotein complex. RESULTS Phosphatidylserine exposure was significantly increased in 4.1R-deficient erythrocytes obtained from the two different individuals when ligands to CD47 glycoprotein were bound. Spontaneous phosphatidylserine exposure was normal. 4.1R, glycophorin C and p55 were missing or sharply reduced. Furthermore there was an alteration or deficiency of CD47 glycoprotein and a lack of CD44 glycoprotein. Based on a recent study in 4.1R-deficient mice, we found that there are clear functional differences between interactions of human red cell 4.1R and its murine counterpart. CONCLUSIONS Glycophorin C is known to bind 4.1R, and we have defined previously that it also binds CD47. From our evidence, we suggest that 4.1R plays a role in the phosphatidylserine exposure signaling pathway that is of fundamental importance in red cell turnover. The linkage of CD44 to 4.1R may be relevant to this process.
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Desmarets M, Noizat-Pirenne F. [Murine models in blood transfusion: allo-immunization, hemolysis]. Transfus Clin Biol 2011; 18:115-23. [PMID: 21398162 DOI: 10.1016/j.tracli.2011.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Accepted: 01/27/2011] [Indexed: 01/28/2023]
Abstract
Mice represent an animal model that can be easily manipulated. Mice have been used to model many human diseases. This review addresses murine models of immunity directed against red blood cell antigens as well as models of antibody and non-antibody mediated hemolysis. These models allow for a better understanding of the side effects of transfusion, such as red blood cell allo-immunization and post-transfusional hemolytic reactions. They also help explore strategies to treat and prevent these side effects in ways that would not be available using clinical research alone.
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Affiliation(s)
- M Desmarets
- EFS Île-de-France, 51, avenue Maréchal-de-Lattre-de-Tassigny, 94000 Créteil, France.
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Cytosolic guanine nucledotide binding deficient form of transglutaminase 2 (R580a) potentiates cell death in oxygen glucose deprivation. PLoS One 2011; 6:e16665. [PMID: 21304968 PMCID: PMC3031627 DOI: 10.1371/journal.pone.0016665] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Accepted: 01/10/2011] [Indexed: 01/15/2023] Open
Abstract
Transglutaminase 2 (TG2) is a hypoxia-responsive protein that is a calcium-activated transamidating enzyme, a GTPase and a scaffolding/linker protein. Upon activation TG2 undergoes a large conformational change, which likely affects not only its enzymatic activities but its non-catalytic functions as well. The focus of this study was on the role of transamidating activity, conformation and localization of TG2 in ischemic cell death. Cells expressing a GTP binding deficient form of TG2 (TG2-R580A) with high basal transamidation activity and a more extended conformation showed significantly increased cell death in response to oxygen-glucose deprivation; however, targeting TG2-R580A to the nucleus abrogated its detrimental role in oxygen-glucose deprivation. Treatment of cells expressing wild type TG2, TG2-C277S (a transamidating inactive mutant) and TG2-R580A with Cp4d, a reversible TG2 inhibitor, did not affect cell death in response to oxygen-glucose deprivation. These findings indicate that the pro-cell death effects of TG2 are dependent on its localization to the cytosol and independent of its transamidation activity. Further, the conformational state of TG2 is likely an important determinant in cell survival and the prominent function of TG2 in ischemic cell death is as a scaffold to modulate cellular processes.
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