1
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Jones DC, Elz AE, Hadadianpour A, Ryu H, Glass DR, Newell EW. Cell Simulation as Cell Segmentation. bioRxiv 2024:2024.04.25.591218. [PMID: 38712065 PMCID: PMC11071468 DOI: 10.1101/2024.04.25.591218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Single-cell spatial transcriptomics promises a highly detailed view of a cell's transcriptional state and microenvironment, yet inaccurate cell segmentation can render this data murky by misattributing large numbers of transcripts to nearby cells or conjuring nonexistent cells. We adopt methods from ab initio cell simulation to rapidly infer morphologically plausible cell boundaries that preserve cell type heterogeneity. Benchmarking applied to datasets generated by three commercial platforms show superior performance and computational efficiency of this approach compared with existing methods. We show that improved accuracy in cell segmentation aids greatly in detection of difficult to accurately segment tumor infiltrating immune cells such as neutrophils and T cells. Lastly, through improvements in our ability to delineate subsets of tumor infiltrating T cells, we show that CXCL13-expressing CD8+ T cells tend to be more closely associated with tumor cells than their CXCL13-negative counterparts in data generated from renal cell carcinoma patient samples. Proseg is available under at open source license at https://github.com/dcjones/proseg .
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2
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Katru SC, Balakrishnan AS, Munirathinam G, Hadadianpour A, Smith SA, Kalyanasundaram R. Identification and characterization of a novel nematode pan allergen (NPA) from Wuchereria bancrofti and their potential role in human filarial tropical pulmonary eosinophilia (TPE). PLoS Negl Trop Dis 2024; 18:e0011972. [PMID: 38354188 PMCID: PMC10898765 DOI: 10.1371/journal.pntd.0011972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/27/2024] [Accepted: 02/06/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Tropical pulmonary eosinophilia (TPE) is a chronic respiratory syndrome associated with Lymphatic Filariasis (LF), a tropical parasitic infection of the human, transmitted by mosquitoes. The larval form of LF (microfilariae) are trapped in the lungs of TPE subjects have a major role in initiating the TPE syndrome. To date, there are no reports on the potential allergen that is responsible for generating parasite-specific IgE in TPE. METHODOLOGY/PRINCIPAL FINDINGS In this project, we screened a cDNA expression library of the microfilarial stages of Wuchereria bancrofti with monoclonal IgE antibodies prepared from subjects with clinical filarial infections. Our studies identified a novel molecule that showed significant sequence similarity to an allergen. A blast analysis showed the presence of similar proteins in a number of nematodes parasites. Thus, we named this molecule as Nematode Pan Allergen (NPA). Subsequent functional analysis showed that NPA is a potent allergen that can cause release of histamine from mast cells, induce secretion of proinflammatory cytokines from alveolar macrophages and promote accumulation of eosinophils in the tissue, all of which occur in TPE lungs. CONCLUSIONS/SIGNIFICANCE Based on our results, we conclude that the NPA protein secreted by the microfilariae of W. bancrofti may play a significant role in the pathology of TPE syndrome in LF infected individuals. Further studies on this molecule can help design an approach to neutralize the NPA in an attempt to reduce the pathology associated with TPE in LF infected subjects.
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Affiliation(s)
- Samuel Christopher Katru
- Department of Biomedical Sciences, University of Illinois, College of Medicine Rockford, Rockford, IL, United States of America
| | - Anand Setty Balakrishnan
- Department of Biomedical Sciences, University of Illinois, College of Medicine Rockford, Rockford, IL, United States of America
| | - Gnanasekar Munirathinam
- Department of Biomedical Sciences, University of Illinois, College of Medicine Rockford, Rockford, IL, United States of America
| | - Azadeh Hadadianpour
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, A2210 Medical Center North, Nashville, Tennessee, United States of America
| | - Scott A. Smith
- Vanderbilt University Medical Center, Department of Pathology, Microbiology and Immunology, A2210 Medical Center North, Nashville, Tennessee, United States of America
| | - Ramaswamy Kalyanasundaram
- Department of Biomedical Sciences, University of Illinois, College of Medicine Rockford, Rockford, IL, United States of America
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3
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Hadadianpour A, Daniel J, Zhang J, Spiller BW, Makaraviciute A, DeWitt ÅM, Walden HS, Hamilton RG, Peebles RS, Nutman TB, Smith SA. Human IgE mAbs identify major antigens of parasitic worm infection. J Allergy Clin Immunol 2022; 150:1525-1533. [PMID: 35760390 PMCID: PMC9742163 DOI: 10.1016/j.jaci.2022.05.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 04/14/2022] [Accepted: 05/17/2022] [Indexed: 01/21/2023]
Abstract
BACKGROUND Much of our understanding of the targets of IgE comes from studies of allergy, though little is known about the natural immunogenic targets seen after parasitic worm infections. OBJECTIVE We used human monoclonal antibodies (mAbs) for an unbiased and comprehensive characterization of the immunodominant antigens targeted by IgE in conditions like allergy or helminth infection that are associated with elevated levels of IgE. METHODS Using human hybridoma technology to immortalize IgE encoding B-cells from peripheral blood of subjects with filarial infections and elevated IgE, we generated naturally occurring human IgE mAbs. B-cell cultures were screened in an unbiased manner for IgE production without regard to specificity. Isolated IgE mAbs were then tested for binding to Brugia malayi somatic extracts using ImmunoCAP, immunoblot, and ELISA. Immunoprecipitation followed by mass spectrometry proteomics was used to identify helminth antigens that were then expressed in Escherichia coli for IgE binding characterization. RESULTS We isolated 56 discrete IgE mAbs from 7 individuals with filarial infections. From these mAbs, we were able to definitively identify 19 filarial antigens. All IgE mAbs targeted filarial excreted/secretory proteins, including a family of previously uncharacterized proteins. Interestingly, the transthyretin-related antigens acted as the dominant inducer of the filaria-specific IgE antibody response. These filaria-specific IgE mAbs were potent inducers of anaphylaxis when passively administered to human FcεRI-expressing mice. CONCLUSIONS We generated human hybridomas secreting naturally occurring helminth-specific IgE mAbs from filarial-infected subjects. This work provides much-needed insight into the ontogeny of helminth-induced immune response and IgE antibody response.
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Affiliation(s)
- Azadeh Hadadianpour
- Departments of Medicine and Pathology, Nashville, Tenn; departments of Medicine Microbiology and Immunology, Nashville, Tenn
| | - Jacob Daniel
- Departments of Medicine and Pathology, Nashville, Tenn; departments of Medicine Microbiology and Immunology, Nashville, Tenn
| | - Jian Zhang
- Departments of Medicine and Pathology, Nashville, Tenn; departments of Medicine Microbiology and Immunology, Nashville, Tenn
| | - Benjamin W Spiller
- departments of Medicine Microbiology and Immunology, Nashville, Tenn; Pharmacology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tenn
| | | | - Åsa M DeWitt
- Special Allergen Service, Thermo Fisher Scientific, Uppsala, Sweden
| | - Heather S Walden
- Department of Comparative, Diagnostic, and Population Medicine, College of Veterinary Medicine, University of Florida, Gainesville, Fla
| | - Robert G Hamilton
- Dermatology, Allergy and Clinical Immunology Laboratory, Johns Hopkins University School of Medicine, Baltimore, Md
| | - R Stokes Peebles
- Departments of Medicine and Pathology, Nashville, Tenn; departments of Medicine Microbiology and Immunology, Nashville, Tenn
| | - Thomas B Nutman
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Scott A Smith
- Departments of Medicine and Pathology, Nashville, Tenn; departments of Medicine Microbiology and Immunology, Nashville, Tenn.
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4
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Bensing BA, Stubbs HE, Agarwal R, Yamakawa I, Luong K, Solakyildirim K, Yu H, Hadadianpour A, Castro MA, Fialkowski KP, Morrison KM, Wawrzak Z, Chen X, Lebrilla CB, Baudry J, Smith JC, Sullam PM, Iverson TM. Origins of glycan selectivity in streptococcal Siglec-like adhesins suggest mechanisms of receptor adaptation. Nat Commun 2022; 13:2753. [PMID: 35585145 PMCID: PMC9117288 DOI: 10.1038/s41467-022-30509-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 04/26/2022] [Indexed: 11/22/2022] Open
Abstract
Bacterial binding to host receptors underlies both commensalism and pathogenesis. Many streptococci adhere to protein-attached carbohydrates expressed on cell surfaces using Siglec-like binding regions (SLBRs). The precise glycan repertoire recognized may dictate whether the organism is a strict commensal versus a pathogen. However, it is currently not clear what drives receptor selectivity. Here, we use five representative SLBRs and identify regions of the receptor binding site that are hypervariable in sequence and structure. We show that these regions control the identity of the preferred carbohydrate ligand using chimeragenesis and single amino acid substitutions. We further evaluate how the identity of the preferred ligand affects the interaction with glycoprotein receptors in human saliva and plasma samples. As point mutations can change the preferred human receptor, these studies suggest how streptococci may adapt to changes in the environmental glycan repertoire.
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Affiliation(s)
- Barbara A Bensing
- Division of Infectious Diseases, Veterans Affairs Medical Center, Department of Medicine, University of California, San Francisco, CA, USA
- the Northern California Institute for Research and Education, San Francisco, CA, 94121, USA
| | - Haley E Stubbs
- Graduate Program in Chemical and Physical Biology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Rupesh Agarwal
- University of Tennessee/Oak Ridge National Laboratory, Center for Molecular Biophysics, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6309, USA
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, 37996, USA
| | - Izumi Yamakawa
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA
- School of Nursing, Belmont University, Nashville, TN, 37212, USA
| | - Kelvin Luong
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Kemal Solakyildirim
- Department of Chemistry, Erzincan Binali Yildirim University, Erzincan, 24100, Turkey
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Hai Yu
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Azadeh Hadadianpour
- Department of Microbiology, Pathology, and Immunology, Vanderbilt University, Nashville, TN, 37232, USA
| | - Manuel A Castro
- Department of Biochemistry, Vanderbilt University, Nashville, TN, 37232, USA
| | - Kevin P Fialkowski
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA
- College of Medicine, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - KeAndreya M Morrison
- Department of Pharmacology, School of Graduate Studies and Research, Meharry Medical College, Nashville, TN, 37208, USA
| | - Zdzislaw Wawrzak
- LS-CAT Synchrotron Research Center, Northwestern University, Argonne, IL, 60439, USA
| | - Xi Chen
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Carlito B Lebrilla
- Department of Chemistry, University of California, Davis, CA, 95616, USA
| | - Jerome Baudry
- Department of Biological Sciences, The University of Alabama in Huntsville, Huntsville, AL, 35899, USA
| | - Jeremy C Smith
- University of Tennessee/Oak Ridge National Laboratory, Center for Molecular Biophysics, Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831-6309, USA
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN, 37996, USA
| | - Paul M Sullam
- Division of Infectious Diseases, Veterans Affairs Medical Center, Department of Medicine, University of California, San Francisco, CA, USA
- the Northern California Institute for Research and Education, San Francisco, CA, 94121, USA
| | - T M Iverson
- Department of Pharmacology, Vanderbilt University, Nashville, TN, 37232, USA.
- Department of Biochemistry, Vanderbilt University, Nashville, TN, 37232, USA.
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5
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Smith S, Hadadianpour A, Zhang J, Miller C, Makaraviciute Å, Peebles S, Nutman T. Major Immunogens Targeted by IgE During Helminth Infection. J Allergy Clin Immunol 2022. [DOI: 10.1016/j.jaci.2021.12.499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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6
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Smith S, Hadadianpour A, Dolye J, Boyd K, McBride R, Paulson J. Human IgE monoclonal antibodies define the molecular basis of red meat allergy. J Allergy Clin Immunol 2021. [DOI: 10.1016/j.jaci.2020.12.614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Campbell E, Peebles S, Stone C, Zhang J, Hadadianpour A, Doyle J, Smith S. Evaluation of Alpha Gal in Vaccines and Medications using a Human Monoclonal IgE Antibody. J Allergy Clin Immunol 2021. [DOI: 10.1016/j.jaci.2020.12.072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Corzo CA, Varfolomeev E, Setiadi AF, Francis R, Klabunde S, Senger K, Sujatha-Bhaskar S, Drobnick J, Do S, Suto E, Huang Z, Eastham-Anderson J, Katewa A, Pang J, Domeyer M, Dela Cruz C, Paler-Martinez A, Lau VWC, Hadadianpour A, Ramirez-Carrozi V, Sun Y, Bao K, Xu D, Hunley E, Brightbill HD, Warming S, Roose-Girma M, Wong A, Tam L, Emson CL, Crawford JJ, Young WB, Pappu R, McKenzie BS, Asghari V, Vucic D, Hackney JA, Austin CD, Lee WP, Lekkerkerker A, Ghilardi N, Bryan MC, Kiefer JR, Townsend MJ, Zarrin AA. The kinase IRAK4 promotes endosomal TLR and immune complex signaling in B cells and plasmacytoid dendritic cells. Sci Signal 2020; 13:13/634/eaaz1053. [PMID: 32487715 DOI: 10.1126/scisignal.aaz1053] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The dysregulation of multiple signaling pathways, including those through endosomal Toll-like receptors (TLRs), Fc gamma receptors (FcγR), and antigen receptors in B cells (BCR), promote an autoinflammatory loop in systemic lupus erythematosus (SLE). Here, we used selective small-molecule inhibitors to assess the regulatory roles of interleukin-1 receptor (IL-1R)-associated kinase 4 (IRAK4) and Bruton's tyrosine kinase (BTK) in these pathways. The inhibition of IRAK4 repressed SLE immune complex- and TLR7-mediated activation of human plasmacytoid dendritic cells (pDCs). Correspondingly, the expression of interferon (IFN)-responsive genes (IRGs) in cells and in mice was positively regulated by the kinase activity of IRAK4. Both IRAK4 and BTK inhibition reduced the TLR7-mediated differentiation of human memory B cells into plasmablasts. TLR7-dependent inflammatory responses were differentially regulated by IRAK4 and BTK by cell type: In pDCs, IRAK4 positively regulated NF-κB and MAPK signaling, whereas in B cells, NF-κB and MAPK pathways were regulated by both BTK and IRAK4. In the pristane-induced lupus mouse model, inhibition of IRAK4 reduced the expression of IRGs during disease onset. Mice engineered to express kinase-deficient IRAK4 were protected from both chemical (pristane-induced) and genetic (NZB/W_F1 hybrid) models of lupus development. Our findings suggest that kinase inhibitors of IRAK4 might be a therapeutic in patients with SLE.
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Affiliation(s)
- Cesar A Corzo
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | | | - Ross Francis
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Sha Klabunde
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Kate Senger
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | - Joy Drobnick
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Steven Do
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Eric Suto
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Zhiyu Huang
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | - Arna Katewa
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jodie Pang
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Melanie Domeyer
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | | | - Vivian W C Lau
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | | | - Yonglian Sun
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Katherine Bao
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Daqi Xu
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Emily Hunley
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | - Soren Warming
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | - Alfred Wong
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Lucinda Tam
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Claire L Emson
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - James J Crawford
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Wendy B Young
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Rajita Pappu
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Brent S McKenzie
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Vida Asghari
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Domagoj Vucic
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Jason A Hackney
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Cary D Austin
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Wyne P Lee
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | - Nico Ghilardi
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - Marian C Bryan
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | - James R Kiefer
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA
| | | | - Ali A Zarrin
- Research, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA.
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9
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Hadadianpour A, Daniel JL, Smith SA, Bogdan O. Development and characterization of first ever panels of human helminth-specific IgE monoclonal antibodies (mAb). The Journal of Immunology 2020. [DOI: 10.4049/jimmunol.204.supp.82.33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
According to WHO estimates, more than 1.5 billion people (>24% worldwide) are living with some type of helminth infection and there is no FDA-approved anti-helminth vaccine available. The type 2 immune response is understood to be involved in our defense against helminth infection. In developing countries, elevated serum IgE level is a hallmark of parasitic disease. However, many aspects of the human immune response to helminth infection are still unknown; including, the identity of helminth proteins targeted by IgE antibodies and the size and complexity of the functional IgE repertoire. In this study, we have generated and characterized first ever panels of full-length naturally occurring human helminth specific IgE mAbs. We isolated IgE B cells from individuals with helminth infection and used human hybridoma technology to generate IgE mAbs. ELISA and Western blot techniques were used to test binding of purified IgE mAbs to helminth lysate. The helminth proteins targeted by IgE mAbs were determined using immunoprecipitation, mass spectrometry and de novo peptide sequencing techniques. The information obtained regarding IgE targets and their immune dominance will assist in our basic understanding of the role IgE plays in defending us against helminth infection and will ultimately aid in the rational design of anti-helminth vaccines. Lastly, we analyzed IgE mAb sequences and found remarkable variation in antibody variable region gene usage as well as mutation frequency.
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Affiliation(s)
| | | | - Scott Alan Smith
- 3Vanderbilt University School of Medicine
- 4Vanderbilt Univ. Sch. of Med
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10
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Lin W, Xu D, Austin CD, Caplazi P, Senger K, Sun Y, Jeet S, Young J, Delarosa D, Suto E, Huang Z, Zhang J, Yan D, Corzo C, Barck K, Rajan S, Looney C, Gandham V, Lesch J, Liang WC, Mai E, Ngu H, Ratti N, Chen Y, Misner D, Lin T, Danilenko D, Katavolos P, Doudemont E, Uppal H, Eastham J, Mak J, de Almeida PE, Bao K, Hadadianpour A, Keir M, Carano RAD, Diehl L, Xu M, Wu Y, Weimer RM, DeVoss J, Lee WP, Balazs M, Walsh K, Alatsis KR, Martin F, Zarrin AA. Function of CSF1 and IL34 in Macrophage Homeostasis, Inflammation, and Cancer. Front Immunol 2019; 10:2019. [PMID: 31552020 PMCID: PMC6736990 DOI: 10.3389/fimmu.2019.02019] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 08/09/2019] [Indexed: 12/13/2022] Open
Abstract
Colony-stimulating factor 1 (CSF1) and interleukin 34 (IL34) signal via the CSF1 receptor to regulate macrophage differentiation. Studies in IL34- or CSF1-deficient mice have revealed that IL34 function is limited to the central nervous system and skin during development. However, the roles of IL34 and CSF1 at homeostasis or in the context of inflammatory diseases or cancer in wild-type mice have not been clarified in vivo. By neutralizing CSF1 and/or IL34 in adult mice, we identified that they play important roles in macrophage differentiation, specifically in steady-state microglia, Langerhans cells, and kidney macrophages. In several inflammatory models, neutralization of both CSF1 and IL34 contributed to maximal disease protection. However, in a myeloid cell-rich tumor model, CSF1 but not IL34 was required for tumor-associated macrophage accumulation and immune homeostasis. Analysis of human inflammatory conditions reveals IL34 upregulation that may account for the protection requirement of IL34 blockade. Furthermore, evaluation of IL34 and CSF1 blockade treatment during Listeria infection reveals no substantial safety concerns. Thus, IL34 and CSF1 play non-redundant roles in macrophage differentiation, and therapeutic intervention targeting IL34 and/or CSF1 may provide an effective treatment in macrophage-driven immune-pathologies.
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Affiliation(s)
- WeiYu Lin
- Genentech, South San Francisco, CA, United States
| | - Daqi Xu
- Genentech, South San Francisco, CA, United States
| | | | | | - Kate Senger
- Genentech, South San Francisco, CA, United States
| | - Yonglian Sun
- Genentech, South San Francisco, CA, United States
| | | | - Judy Young
- Genentech, South San Francisco, CA, United States
| | | | - Eric Suto
- Genentech, South San Francisco, CA, United States
| | - Zhiyu Huang
- Genentech, South San Francisco, CA, United States
| | - Juan Zhang
- Genentech, South San Francisco, CA, United States
| | - Donghong Yan
- Genentech, South San Francisco, CA, United States
| | - Cesar Corzo
- Genentech, South San Francisco, CA, United States
| | - Kai Barck
- Genentech, South San Francisco, CA, United States
| | | | | | | | - Justin Lesch
- Genentech, South San Francisco, CA, United States
| | | | - Elaine Mai
- Genentech, South San Francisco, CA, United States
| | - Hai Ngu
- Genentech, South San Francisco, CA, United States
| | | | - Yongmei Chen
- Genentech, South San Francisco, CA, United States
| | - Dinah Misner
- Genentech, South San Francisco, CA, United States
| | - Tori Lin
- Genentech, South San Francisco, CA, United States
| | | | | | | | | | | | - Judy Mak
- Genentech, South San Francisco, CA, United States
| | | | | | | | - Mary Keir
- Genentech, South San Francisco, CA, United States
| | | | - Lauri Diehl
- Genentech, South San Francisco, CA, United States
| | - Min Xu
- Genentech, South San Francisco, CA, United States
| | - Yan Wu
- Genentech, South San Francisco, CA, United States
| | | | - Jason DeVoss
- Genentech, South San Francisco, CA, United States
| | - Wyne P Lee
- Genentech, South San Francisco, CA, United States
| | | | - Kevin Walsh
- Genentech, South San Francisco, CA, United States
| | | | | | - Ali A Zarrin
- Genentech, South San Francisco, CA, United States
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11
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Wurth MA, Hadadianpour A, Horvath DJ, Daniel J, Bogdan O, Goleniewska K, Pomés A, Hamilton RG, Peebles RS, Smith SA. Human IgE mAbs define variability in commercial Aspergillus extract allergen composition. JCI Insight 2018; 3:123387. [PMID: 30333320 DOI: 10.1172/jci.insight.123387] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 09/04/2018] [Indexed: 11/17/2022] Open
Abstract
Sensitization to Aspergillus species is associated with allergic respiratory diseases. Allergen immunotherapy with nonstandardized Aspergillus extracts is commonly used as therapy in these patients. Unfortunately, no method exists to measure the relevant allergen protein content in diagnostic and therapeutic extracts. Thus, there is a critical need for Aspergillus extract standardization. We hypothesized that development of Aspergillus-specific human IgE mAbs would allow for the characterization of the relevant human allergenic epitopes among currently available commercial Aspergillus fumigatus extracts. Patients with allergic bronchopulmonary mycosis were recruited from Vanderbilt University Medical Center. IgE antibody-secreting B cells were grown and immortalized using human hybridoma techniques first described here. Twenty-six human Aspergillus-reactive IgE mAbs were used as capture and detection reagents to characterize the Aspergillus allergen content of commercial extracts. We found extreme variability in the specificity and quantity of their protein targets. Just 4 mAbs reacted with all available extracts, and only 1 of 4 extracts contained the major allergen Asp f 1. This degree of variability will almost certainly affect the efficacy of these reagents when used in diagnosis and treatment. Human IgE mAbs represent an innovative tool for the evaluation of relevant human allergenic epitopes, which may assist in future development and long-term standardization of mold extracts.
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Affiliation(s)
| | - Azadeh Hadadianpour
- Department of Medicine, and.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tennessee, USA
| | | | | | | | - Kasia Goleniewska
- Department of Medicine, and.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tennessee, USA
| | - Anna Pomés
- INDOOR Biotechnologies Inc., Charlottesville, Virginia, USA
| | - Robert G Hamilton
- Dermatology, Allergy and Clinical Immunology Laboratory, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - R Stokes Peebles
- Department of Medicine, and.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tennessee, USA
| | - Scott A Smith
- Department of Medicine, and.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Vanderbilt University, Nashville, Tennessee, USA
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Hadadianpour A, Samiee Aref MH, Zeinali S. High-Resolution HLA-A Typing in Normal Iranian Population. Iran Biomed J 2017; 22:134-7. [PMID: 28952291 PMCID: PMC5786660 DOI: 10.22034/ibj.22.2.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Background: Human leukocyte antigen (HLA) gene is a highly polymorphic region. HLA typing is required to match patients and donors for transplantation; therefore, development of HLA registries is necessary for finding HLA match donors. HLA system is highly informative, and numerous studies have been conducted on HLA allele distribution in different populations. Methods: In this study, 100 unrelated Iranian individuals were typed for HLA-A locus using sequence-based typing method. Samples were subjected to the PCR, followed by Sanger sequencing and software analysis. Results: A*02:01 (13%) and A*24:02 (12%) were the two most frequent alleles, while A*01:14, A*02:05, A*02:11, A*02:34, A*02:50, A*11:04, A*23:02, A*24:34, A*25:01, A*26:09, A*26:43, A*29:67, A*30:54, A*31:02, A*31:66, A*32:03, A*32:04, A*33:03, and A*66:15 alleles had the least frequencies (1%). Conclusion: This is the first report of HLA-A allele level typing in a randomized population of Iran and can be useful for development of national registries of HLA-typed volunteer marrow donors and local cord blood banks.
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Affiliation(s)
- Azadeh Hadadianpour
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran.,Kawsar Human Genetics Research Center, Tehran, Iran
| | - Mohammad Hasan Samiee Aref
- Department of Biotechnology, College of Science, University of Tehran, Tehran, Iran.,Kawsar Human Genetics Research Center, Tehran, Iran
| | - Sirous Zeinali
- Kawsar Human Genetics Research Center, Tehran, Iran.,Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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