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Li Y, Wu J. CD177 is a novel IgG Fc receptor and CD177 genetic variants affect IgG-mediated function. Front Immunol 2024; 15:1418539. [PMID: 39131159 PMCID: PMC11316256 DOI: 10.3389/fimmu.2024.1418539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 07/08/2024] [Indexed: 08/13/2024] Open
Abstract
CD177 plays an important role in the proliferation and differentiation of myeloid lineage cells including neutrophils, myelocytes, promyelocytes, megakaryocytes, and early erythroblasts in bone marrow. CD177 deficiency is a common phenotype in humans. Our previous studies revealed genetic mechanisms of human CD177 deficiency and expression variations. Up to now, immune functions of CD177 remain undefined. In the current study, we revealed human IgG as a ligand for CD177 by using flow cytometry, bead-rosette formation, and surface plasmon resonance (SPR) assays. In addition, we show that CD177 variants affect the binding capacity of CD177 for human IgG. Furthermore, we show that the CD177 genetic variants significantly affect antibody-dependent cell-mediated cytotoxicity (ADCC) function. The demonstration of CD177 as a functional IgG Fc-receptor may provide new insights into CD177 immune function and genetic mechanism underlying CD177 as biomarkers for human diseases.
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Affiliation(s)
- Yunfang Li
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN, United States
| | - Jianming Wu
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, MN, United States
- Department of Medicine, University of Minnesota, Minneapolis, MN, United States
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Li Y, Wu J. CD177 is a novel IgG Fc receptor and CD177 genetic variants affect IgG-mediated function. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.07.574546. [PMID: 38260289 PMCID: PMC10802432 DOI: 10.1101/2024.01.07.574546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
CD177 plays an important role in the proliferation and differentiation of myeloid lineage cells including neutrophils, myelocytes, promyelocytes, megakaryocytes, and early erythroblasts in bone marrow. CD177 deficiency is a common phenotype in humans. Our previous studies revealed genetic mechanisms of human CD177 deficiency and expression variations. Up to now, immune functions of CD177 remain undefined. In the current study, we revealed human IgG as a ligand for CD177 by using flow cytometry, bead-rosette formation, and surface plasmon resonance (SPR) assays. In addition, we show that CD177 variants affect the binding capacity of CD177 for human IgG. Furthermore, we showed that the CD177 genetic variants significantly affect antibody-dependent cell-mediated cytotoxicity (ADCC) function. The demonstration of CD177 as a functional IgG Fc-receptor may provide new insights into CD177 immune function and genetic mechanism underlying CD177 as biomarkers for human diseases.
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Creary S, Shrestha CL, Kotha K, Minta A, Fitch J, Jaramillo L, Zhang S, Pinto S, Thompson R, Ramilo O, White P, Mejias A, Kopp BT. Baseline and Disease-Induced Transcriptional Profiles in Children with Sickle Cell Disease. Sci Rep 2020; 10:9013. [PMID: 32487996 PMCID: PMC7265336 DOI: 10.1038/s41598-020-65822-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/22/2020] [Indexed: 12/24/2022] Open
Abstract
Acute chest syndrome (ACS) is a significant cause of morbidity and mortality in sickle cell disease (SCD), but preventive, diagnostic, and therapeutic options are limited. Further, ACS and acute vasoccclusive pain crises (VOC) have overlapping features, which causes diagnostic dilemmas. We explored changes in gene expression profiles among patients with SCD hospitalized for VOC and ACS episodes to better understand ACS disease pathogenesis. Whole blood RNA-Seq was performed for 20 samples from children with SCD at baseline and during a hospitalization for either an ACS (n = 10) or a VOC episode (n = 10). Respiratory viruses were identified from nasopharyngeal swabs. Functional gene analyses were performed using modular repertoires, IPA, Gene Ontology, and NetworkAnalyst 3.0. The VOC group had a numerically higher percentage of female, older, and hemoglobin SS participants compared to the ACS group. Viruses were detected in 50% of ACS cases and 20% of VOC cases. We identified 3004 transcripts that were differentially expressed during ACS episodes, and 1802 transcripts during VOC episodes. Top canonical pathways during ACS episodes were related to interferon signaling, neuro-inflammation, pattern recognition receptors, and macrophages. Top canonical pathways in patients with VOC included IL-10 signaling, iNOS signaling, IL-6 signaling, and B cell signaling. Several genes related to antimicrobial function were down-regulated during ACS compared to VOC. Gene enrichment nodal interactions demonstrated significantly altered pathways during ACS and VOC. A complex network of changes in innate and adaptive immune gene expression were identified during both ACS and VOC episodes. These results provide unique insights into changes during acute events in children with SCD.
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Affiliation(s)
- Susan Creary
- Center for Innovation in Pediatric Practice, The Abigail Wexner Research Institute, Columbus, OH, USA
- Division of Hematology and Oncology, Nationwide Children's Hospital, Columbus, OH, USA
| | - Chandra L Shrestha
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute, Columbus, OH, USA
| | - Kavitha Kotha
- Division of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Abena Minta
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute, Columbus, OH, USA
| | - James Fitch
- The Institute for Genomic Medicine, The Abigail Wexner Research Institute, Columbus, OH, USA
| | - Lisa Jaramillo
- Center for Vaccines and Immunity, The Abigail Wexner Research Institute, Columbus, OH, USA
| | - Shuzhong Zhang
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute, Columbus, OH, USA
| | - Swaroop Pinto
- Division of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Rohan Thompson
- Division of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Octavio Ramilo
- Center for Vaccines and Immunity, The Abigail Wexner Research Institute, Columbus, OH, USA
- Division of Infectious Diseases, Nationwide Children's Hospital, Columbus, OH, USA
| | - Peter White
- The Institute for Genomic Medicine, The Abigail Wexner Research Institute, Columbus, OH, USA
| | - Asuncion Mejias
- Center for Vaccines and Immunity, The Abigail Wexner Research Institute, Columbus, OH, USA
- Division of Infectious Diseases, Nationwide Children's Hospital, Columbus, OH, USA
| | - Benjamin T Kopp
- Center for Microbial Pathogenesis, The Abigail Wexner Research Institute, Columbus, OH, USA.
- Division of Pulmonary Medicine, Nationwide Children's Hospital, Columbus, OH, USA.
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Li Y, Mair DC, Schuller RM, Li L, Wu J. Genetic mechanism of human neutrophil antigen 2 deficiency and expression variations. PLoS Genet 2015; 11:e1005255. [PMID: 26024230 PMCID: PMC4449163 DOI: 10.1371/journal.pgen.1005255] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 04/29/2015] [Indexed: 11/18/2022] Open
Abstract
Human neutrophil antigen 2 (HNA-2) deficiency is a common phenotype as 3-5% humans do not express HNA-2. HNA-2 is coded by CD177 gene that associates with human myeloproliferative disorders. HNA-2 deficient individuals are prone to produce HNA-2 alloantibodies that cause a number of disorders including transfusion-related acute lung injury and immune neutropenia. In addition, the percentages of HNA-2 positive neutrophils vary significantly among individuals and HNA-2 expression variations play a role in human diseases such as myelodysplastic syndrome, chronic myelogenous leukemia, and gastric cancer. The underlying genetic mechanism of HNA-2 deficiency and expression variations has remained a mystery. In this study, we identified a novel CD177 nonsense single nucleotide polymorphism (SNP 829A>T) that creates a stop codon within the CD177 coding region. We found that all 829TT homozygous individuals were HNA-2 deficient. In addition, the SNP 829A>T genotypes were significantly associated with the percentage of HNA-2 positive neutrophils. Transfection experiments confirmed that HNA-2 expression was absent on cells expressing the CD177 SNP 829T allele. Our data clearly demonstrate that the CD177 SNP 829A>T is the primary genetic determinant for HNA-2 deficiency and expression variations. The mechanistic delineation of HNA-2 genetics will enable the development of genetic tests for diagnosis and prognosis of HNA-2-related human diseases.
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Affiliation(s)
- Yunfang Li
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - David C. Mair
- American Red Cross, North Central Blood Services, National Neutrophil Reference Laboratory, Saint Paul, Minnesota, United States of America
| | - Randy M. Schuller
- American Red Cross, North Central Blood Services, National Neutrophil Reference Laboratory, Saint Paul, Minnesota, United States of America
| | - Ling Li
- Department of Clinical and Experimental Pharmacology, University of Minnesota, Minneapolis, Minnesota, United States of America
| | - Jianming Wu
- Department of Veterinary and Biomedical Sciences, University of Minnesota, Saint Paul, Minnesota, United States of America
- Department of Medicine, University of Minnesota, Minneapolis, Minnesota, United States of America
- * E-mail:
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Meyerson HJ, Osei E, Schweitzer K, Blidaru G, Edinger A, Balog A. CD177 expression on neutrophils: in search of a clonal assay for myeloid neoplasia by flow cytometry. Am J Clin Pathol 2013; 140:658-69. [PMID: 24124144 DOI: 10.1309/ajcpdfbebqzw1oi7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVES To determine whether the fraction of CD177+ neutrophils might be altered in clonal myeloid disorders, similar to the skewed κ/λ ratio for B-cell lymphomas, and could be used to identify myeloid neoplasms. METHODS Blood and bone marrow samples were evaluated for the fraction of CD177+ neutrophils by flow cytometry. RESULTS Skewed high neutrophil CD177(%) was not associated with neoplasia, but skewed low neutrophil CD177(%) was highly correlated with clonal myeloid disorders at values less than 40%. Specificity of low neutrophil CD177(%) for clonal myeloid disorders was 87% with a 40% cutoff and 95% with a 30% cutoff. Findings were most pronounced for myelodysplasia, with 52% (11/21) containing fewer than 40% CD177+ neutrophils. Specificity was also suggested by normalization of neutrophil CD177(%) in four patients who reached morphologic remission after therapy for myelodysplasia or acute leukemia. CONCLUSIONS Skewed low neutrophil CD177(%) is highly associated with clonal myeloid disorders, particularly myelodysplasia, and may be useful for detecting clonal myeloid disorders.
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Affiliation(s)
- Howard J. Meyerson
- Department of Pathology, University Hospitals Case Medical Center and Seidman Cancer Center Case Western Reserve University, Cleveland, OH
| | - Ebeneezer Osei
- Department of Pathology, University Hospitals Case Medical Center and Seidman Cancer Center Case Western Reserve University, Cleveland, OH
| | - Karen Schweitzer
- Department of Pathology, University Hospitals Case Medical Center and Seidman Cancer Center Case Western Reserve University, Cleveland, OH
| | - Georgetta Blidaru
- Department of Pathology, University Hospitals Case Medical Center and Seidman Cancer Center Case Western Reserve University, Cleveland, OH
| | - Alison Edinger
- Department of Pathology, University Hospitals Case Medical Center and Seidman Cancer Center Case Western Reserve University, Cleveland, OH
| | - Anna Balog
- Department of Pathology, University Hospitals Case Medical Center and Seidman Cancer Center Case Western Reserve University, Cleveland, OH
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