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Vieira GDS, Kimura TDC, Scarini JF, de Lima-Souza RA, Lavareze L, Emerick C, Gonçalves MT, Damas II, Figueiredo-Maciel T, Sales de Sá R, Aquino IG, Gonçalves de Paiva JP, Fernandes PM, Gonçalves MWA, Kowalski LP, Altemani A, Fillmore GC, Mariano FV, Egal ESA. Hematopoietic colony-stimulating factors in head and neck cancers: Recent advances and therapeutic challenges. Cytokine 2024; 173:156417. [PMID: 37944421 DOI: 10.1016/j.cyto.2023.156417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023]
Abstract
Colony-stimulating factors (CSFs) are key cytokines responsible for the production, maturation, and mobilization of the granulocytic and macrophage lineages from the bone marrow, which have been gaining attention for playing pro- and/or anti-tumorigenic roles in cancer. Head and neck cancers (HNCs) represent a group of heterogeneous neoplasms with high morbidity and mortality worldwide. Treatment for HNCs is still limited even with the advancements in cancer immunotherapy. Novel treatments for patients with recurrent and metastatic HNCs are urgently needed. This article provides an in-depth review of the role of hematopoietic cytokines such as granulocyte colony-stimulating factor (G-CSF), granulocyte-macrophage colony-stimulating factor (GM-CSF), macrophage colony-stimulating factor (M-CSF), and interleukin-3 (IL-3; also known as multi-CSF) in the HNCs tumor microenvironment. We have reviewed current results from clinical trials using CSFs as adjuvant therapy to treat HNCs patients, and also clinical findings reported to date on the therapeutic application of CSFs toxicities arising from chemoradiotherapy.
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Affiliation(s)
- Gustavo de Souza Vieira
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Talita de Carvalho Kimura
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - João Figueira Scarini
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Reydson Alcides de Lima-Souza
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Luccas Lavareze
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Carolina Emerick
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Mayara Trevizol Gonçalves
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Ingrid Iara Damas
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Tayná Figueiredo-Maciel
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Raisa Sales de Sá
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Iara Gonçalves Aquino
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - João Paulo Gonçalves de Paiva
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Patrícia Maria Fernandes
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Moisés Willian Aparecido Gonçalves
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil; Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery, School of Medicine, University of São Paulo (USP), São Paulo, Brazil; Department of Head and Neck Surgery and Otolaryngology, AC Camargo Cancer Center, São Paulo, Brazil
| | - Albina Altemani
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Gary Chris Fillmore
- Biorepository and Molecular Pathology, Huntsman Cancer Institute, University of Utah (UU), Salt Lake City, UT, United States
| | - Fernanda Viviane Mariano
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil.
| | - Erika Said Abu Egal
- Department of Pathology, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo, Brazil; Biorepository and Molecular Pathology, Huntsman Cancer Institute, University of Utah (UU), Salt Lake City, UT, United States.
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Zhou Y, Li J, Wu W, Chen Y, Cheng H, Li M, Sun Y, Yang J, Peng D, Xue Q, Ma H. Immunogenicity evaluation of viral peptides via nonspecific interactions between anti-peptide IgYs and non-cognate peptides. Int Immunol 2023; 35:243-253. [PMID: 36591893 DOI: 10.1093/intimm/dxac068] [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: 05/25/2022] [Accepted: 12/29/2022] [Indexed: 01/03/2023] Open
Abstract
Immunogenicity can be evaluated by detecting antibodies (Abs) induced by an antigen. Presently deployed assays, however, do not consider the negative impacts of Ab poly-specificity, which is well established at the monoclonal antibody level. Here, we studied antibody poly-specificity at the serum level (i.e. nonspecific Ab-probe interactions, NSIs), and ended up establishing a new platform for viral peptide immunogenicity evaluation. We first selected three peptides of high, medium and low immunogenicity, using a 'vaccine serum response rate'-based approach (i.e. the gold standard). These three peptides (Pi) in the bovine serum albumin-Pi form were used to immunize chickens, resulting in longitudinal serum samples for screening with a non-cognate peptide library. The signal intensity of Ab-peptide specific binding and 'NSI count' was used to evaluate the viral peptides' immunogenicity. Only the NSI count agreed with the gold standard. The NSI count also provides more informative data on antibody production than the aggregated signal intensity by whole-protein-based indirect enzyme-linked immunosorbent assay.
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Affiliation(s)
- Yuxi Zhou
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Jingzhi Li
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Wenya Wu
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Yanfei Chen
- China Institute of Veterinary Drug Control, Beijing 100081, China
| | - Hu Cheng
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Mengyu Li
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Yiyue Sun
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Jiao Yang
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
| | - Daxin Peng
- College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Qinghong Xue
- China Institute of Veterinary Drug Control, Beijing 100081, China
| | - Hongwei Ma
- Division of Nanobiomedicine, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
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3
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Padte NN, Yu J, Huang Y, Ho DD. Engineering multi-specific antibodies against HIV-1. Retrovirology 2018; 15:60. [PMID: 30157871 PMCID: PMC6114543 DOI: 10.1186/s12977-018-0439-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 08/11/2018] [Indexed: 01/05/2023] Open
Abstract
As increasing numbers of broadly neutralizing monoclonal antibodies (mAbs) against HIV-1 enter clinical trials, it is becoming evident that combinations of mAbs are necessary to block infection by the diverse array of globally circulating HIV-1 strains and to limit the emergence of resistant viruses. Multi-specific antibodies, in which two or more HIV-1 entry-targeting moieties are engineered into a single molecule, have expanded rapidly in recent years and offer an attractive solution that can improve neutralization breadth and erect a higher barrier against viral resistance. In some unique cases, multi-specific HIV-1 antibodies have demonstrated vastly improved antiviral potency due to increased avidity or enhanced spatiotemporal functional activity. This review will describe the recent advancements in the HIV-1 field in engineering monoclonal, bispecific and trispecific antibodies with enhanced breadth and potency against HIV-1. A case study will also be presented as an example of the developmental challenges these multi-specific antibodies may face on their path to the clinic. The tremendous potential of multi-specific antibodies against the HIV-1 epidemic is readily evident. Creativity in their discovery and engineering, and acumen during their development, will be the true determinant of their success in reducing HIV-1 infection and disease.
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Affiliation(s)
- Neal N Padte
- Aaron Diamond AIDS Research Center, The Rockefeller University, 455 First Avenue, New York, NY, 10016, USA
| | - Jian Yu
- Aaron Diamond AIDS Research Center, The Rockefeller University, 455 First Avenue, New York, NY, 10016, USA
| | - Yaoxing Huang
- Aaron Diamond AIDS Research Center, The Rockefeller University, 455 First Avenue, New York, NY, 10016, USA
| | - David D Ho
- Aaron Diamond AIDS Research Center, The Rockefeller University, 455 First Avenue, New York, NY, 10016, USA.
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4
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Hindryckx P, Novak G, Vande Casteele N, Khanna R, Laukens D, Jairath V, Feagan BG. Incidence, Prevention and Management of Anti-Drug Antibodies Against Therapeutic Antibodies in Inflammatory Bowel Disease: A Practical Overview. Drugs 2017; 77:363-377. [PMID: 28233275 DOI: 10.1007/s40265-017-0693-5] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The introduction of biologic therapy has revolutionized the treatment of inflammatory bowel disease (IBD). However, like all therapeutic proteins, monoclonal antibodies have immunogenic potential which is influenced by multiple drug- and patient-related factors. The reported incidence of anti-drug antibodies (ADAs) towards biologic drugs in IBD varies greatly in the literature and depends not only on differences in sensitization but also on the assay methodology and the timepoint of measurement. Sensitization with formation of ADAs is associated with an increased risk of infusion reactions, accelerated drug clearance, and a loss of response (LOR) to drug. Recently, a greater understanding of the pharmacokinetics of therapeutic antibodies has led to the development of new strategies to reduce immunogenicity and more efficient use of these drugs. These preventive strategies include regular scheduled dosing with maintenance of stable therapeutic trough drug concentrations, and co-administration of an immunosuppressive. Sub-therapeutic drug concentrations with low levels of ADAs can generally be overcome with dose escalation, whereas the presence of high concentrations of ADAs requires a switch to another therapeutic agent.
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Affiliation(s)
- Pieter Hindryckx
- Robarts Clinical Trials, University of Western Ontario, London, ON, Canada.,Department of Gastroenterology, University of Ghent, Ghent, Belgium
| | - Gregor Novak
- Robarts Clinical Trials, University of Western Ontario, London, ON, Canada.,Department of Gastroenterology, Ljubljana University Medical Centre, Ljubljana, Slovenia
| | - Niels Vande Casteele
- Robarts Clinical Trials, University of Western Ontario, London, ON, Canada.,Department of Medicine, University of California San Diego, La Jolla, California, USA
| | - Reena Khanna
- Robarts Clinical Trials, University of Western Ontario, London, ON, Canada.,Department of Medicine, University of Western Ontario, London, ON, Canada
| | - Debby Laukens
- Department of Gastroenterology, University of Ghent, Ghent, Belgium
| | - Vipul Jairath
- Robarts Clinical Trials, University of Western Ontario, London, ON, Canada.,Department of Medicine, University of Western Ontario, London, ON, Canada.,Department of Epidemiology and Biostatistics, University of Western Ontario, London, ON, Canada
| | - Brian G Feagan
- Robarts Clinical Trials, University of Western Ontario, London, ON, Canada. .,Department of Medicine, University of Western Ontario, London, ON, Canada. .,Department of Epidemiology and Biostatistics, University of Western Ontario, London, ON, Canada.
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5
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Gorovits B, Clements-Egan A, Birchler M, Liang M, Myler H, Peng K, Purushothama S, Rajadhyaksha M, Salazar-Fontana L, Sung C, Xue L. Pre-existing Antibody: Biotherapeutic Modality-Based Review. AAPS J 2016; 18:311-20. [PMID: 26821802 PMCID: PMC4779092 DOI: 10.1208/s12248-016-9878-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/20/2016] [Indexed: 01/12/2023] Open
Abstract
Pre-existing antibodies to biotherapeutic drugs have been detected in drug-naïve subjects for a variety of biotherapeutic modalities. Pre-existing antibodies are immunoglobulins that are either specific or cross-reacting with a protein or glycan epitopes on a biotherapeutic compound. Although the exact cause for pre-existing antibodies is often unknown, environmental exposures to non-human proteins, glycans, and structurally similar products are frequently proposed as factors. Clinical consequences of the pre-existing antibodies vary from an adverse effect on patient safety to no impact at all and remain highly dependent on the biotherapeutic drug modality and therapeutic indication. As such, pre-existing antibodies are viewed as an immunogenicity risk factor requiring a careful evaluation. Herein, the relationships between biotherapeutic modalities to the nature, prevalence, and clinical consequences of pre-existing antibodies are reviewed. Initial evidence for pre-existing antibody is often identified during anti-drug antibody (ADA) assay development. Other interfering factors known to cause false ADA positive signal, including circulating multimeric drug target, rheumatoid factors, and heterophilic antibodies, are discussed.
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Affiliation(s)
- Boris Gorovits
- Pfizer Worldwide Research & Development, PDM, 1 Burtt Rd, Andover, MA, USA.
| | - Adrienne Clements-Egan
- Janssen Research & Development, LLC (Johnson & Johnson), Welsh and McKean Roads, Spring House, PA, USA
| | - Mary Birchler
- Clinical Immunology, GlaxoSmithKline, King of Prussia, PA, USA
| | - Meina Liang
- MedImmune, Clinical Pharmacology and DMPK, Mountain View, CA, USA
| | - Heather Myler
- Bristol-Myers Squibb, Analytical & Bioanalytical Development, Princeton, NJ, USA
| | - Kun Peng
- Genentech, BioAnalytical Sciences, San Francisco, CA, USA
| | | | - Manoj Rajadhyaksha
- Regeneron Pharmaceuticals, Inc. Bioanalytical Sciences, Tarrytown, NY, USA
| | - Laura Salazar-Fontana
- DSAR, Project Standards and Innovation, Immunology and Biomarkers, Sanofi R&D, Framingham, MA, USA
| | - Crystal Sung
- DSAR, Clinical Laboratory Sciences, Sanofi R&D, Framingham, MA, USA
| | - Li Xue
- Pfizer Worldwide Research & Development, PDM, 1 Burtt Rd, Andover, MA, USA
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6
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Gorovits B, Wakshull E, Pillutla R, Xu Y, Manning MS, Goyal J. Recommendations for the characterization of immunogenicity response to multiple domain biotherapeutics. J Immunol Methods 2014; 408:1-12. [DOI: 10.1016/j.jim.2014.05.010] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 05/15/2014] [Accepted: 05/15/2014] [Indexed: 11/29/2022]
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7
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Tovey MG, Legrand J, Lallemand C. Overcoming immunogenicity associated with the use of biopharmaceuticals. Expert Rev Clin Pharmacol 2012; 4:623-31. [PMID: 22114889 DOI: 10.1586/ecp.11.39] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The safety and efficacy of biopharmaceuticals can be severely impaired by their immunogenicity. A risk-based strategy should be used to assess immunogenicity on a case-by-case basis using standardized methods to correlate anti-drug antibody levels with clinical outcome. In silico and in vitro techniques allow putative T-cell epitopes to be identified and eliminated in candidate molecules while maintaining structure and function. Putative T-cell epitopes can be studied in the context of the HLA allotypes representative of the target population in vitro and in transgenic mice that express human HLA genes. Mice immune tolerant to human proteins allow the study of the effect of factors such as aggregation on the loss of immune tolerance. However, significant challenges remain in order to be able predict the immunogenicity of a therapeutic protein in a particular individual.
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Affiliation(s)
- Michael G Tovey
- Laboratory of Biotechnology and Applied Pharmacology, CNRS UMR 8113, ENS Cachan, 61 Avenue President Wilson, 94235 Cachan, France.
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Abstract
During inflammation and cytopenia, increased levels of hematopoietic growth factors (HPGFs) induce mobilization and proliferation of hematopoietic stem cells and hematopoietic progenitor cells (HPCs), resulting in spatial and quantitative in vivo expansion of the hematopoietic tissue. Exogenous administration of recombinant HPGFs, particularly granulocyte colony-stimulating factor (G-CSF), is routine for mobilization of stem cells, followed by collection and transplantation of autologous or allogeneic stem cells. In this review, we summarize experience using different HPGFs and HPGF combinations for stem cell mobilization, such as G-CSF, granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-3 (IL-3), stem cell factor (SCF), and others. Preclinical and clinical studies of so-called early- and late-acting HPGFs for ex vivo expansion of HPCs are discussed, also with respect to the unresolved question whether expansion of repopulating stem cells can be achieved in vitro.
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Affiliation(s)
- Robert Möhle
- Department of Medicine II, University of Tübingen, Tübingen, Germany.
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Abstract
Multiple cytokines affect the cellular processes that occur during the transition of a hematopoietic stem cell (HSC) to a platelet. Thrombopoietin (TPO) is the physiological regulator of thrombopoiesis. Although a number of cytokines (interleukin [IL]-1, IL-3, and IL-6) were first evaluated for their ability to lessen the degree of thrombocytopenia occurring during a variety of clinical scenarios, their clinical development was abandoned due to their limited effectiveness or excessive toxicity. Clinical results with TPO and a truncated pegylated form of TPO, megakaryocyte growth and development factor (MGDF), were more promising, but the repeated use of MGDF resulted in the development of neutralizing antibodies. This adverse event halted the further clinical development of not only MGDF but also TPO. IL-11 also affects various stages of megakaryocytopoiesis and thrombopoiesis and its use has been shown to shorten the duration of chemotherapy-induced thrombocytopenia, which led to its approval by the US Food and Drug Administration (FDA). A growing number of new non-immunogenic peptides and non-peptide TPO agonists recently have entered clinical trials. These small molecules appear to be effective therapies and have acceptable toxicity, but additional clinical evaluation will be required prior to their approval for clinical use.
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Affiliation(s)
- Stefan O Ciurea
- University of Illinois at Chicago College of Medicine, Chicago, IL, USA
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Yan J, Liu X, Wang Y, Jiang X, Liu H, Wang M, Zhu X, Wu M, Tien P. Enhancing the potency of HBV DNA vaccines using fusion genes of HBV-specific antigens and the N-terminal fragment of gp96. J Gene Med 2007; 9:107-21. [PMID: 17256801 DOI: 10.1002/jgm.998] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Many clinical trials show that DNA vaccine potency needs to be greatly enhanced. We have reported that the N-terminal fragment of glycoprotein 96 (gp96) is able to produce an adjuvant effect for production of cytotoxic T-lymphocytes (CTLs) with hepatitis B virus (HBV)-specific peptides. Here, we report a new strategy for HBV DNA vaccine design using a partial gp96 sequence. MATERIALS AND METHODS We linked the N-terminal 1-355aa (N355) of gp96 to HBV genes encoding for structural proteins, the major S and middle S2S envelope proteins and the truncated core HBcAg (1-149aa). ELISPOT, tetramer staining and intracellular IFN-gamma assay were performed to analyze the induced cellular immune responses of our DNA constructs in BALB/c mice and HLA-A2 transgenic mice. The relative humoral immune responses were analyzed in different IgG isotypes. RESULTS The fusion genes induced 2- to 6-fold higher HBV-specific CD8(+) T cells as compared to the antigens alone. There was an approximate 10-fold decrease in the humoral immune responses with fusion genes based on HBV envelope proteins. Interestingly, the decreased humoral immune responses were not observed when antigens and plasmid encoding N355 were co-delivered. However, an approximate 20-fold higher antibody level was induced when linking N355 to a truncated HBcAg. Immunization by intramuscular injection resulted in predominantly IgG2a antibodies, which indicated that these vaccines preferentially prime Th1 responses. CONCLUSIONS We constructed highly immunogenic fusions by linking the N-terminal fragment of gp96 to HBV antigens. Our results imply that the N-terminal fragment of gp96 may be used as a molecular adjuvant to enhance the potency of DNA vaccines.
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Affiliation(s)
- Jiabin Yan
- Center for Molecular Virology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100080, P.R. China
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11
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Su L, Chen SS, Yang KG, Liu CZ, Zhang YL, Liang ZQ. High-level expression of human stem cell factor fused with erythropoietin mimetic peptide in Escherichia coli. Protein Expr Purif 2006; 47:477-82. [PMID: 16356735 DOI: 10.1016/j.pep.2005.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2005] [Revised: 10/29/2005] [Accepted: 11/03/2005] [Indexed: 11/16/2022]
Abstract
Stem cell factor (SCF) and erythropoietin are essential for normal erythropoiesis and induce proliferation and differentiation synergistically for erythroid progenitor cells. Here, we report our work on construction of SCF/erythropoietin mimetic peptide (EMP) fusion protein gene, in which human SCF cDNA (1-165aa) and EMP sequence (20aa) were connected using a short (GGGGS) or long (GGGGSGGGGGS) linker sequence. The SCF/EMP gene was cloned into the pBV220 vector and expressed in the Escherichia coli DH5alpha strain. The expression level of the fusion protein was about 30% of total cell protein. The resulting inclusion bodies were solubilized with 8 M urea, followed by dilution refolding. The renatured protein was subsequently purified by Q-Sepharose FF column. The final product was >95% pure by SDS-PAGE and the yield of fusion protein was about 40 mg/L of culture. UT-7 cell proliferation and human cord blood cell colony-forming assays showed that the fusion proteins exhibited more potent activity than recombinant human SCF, suggesting a new strategy to enhance biological activities of growth factors.
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Affiliation(s)
- Lin Su
- National Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
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12
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Su L, Chen S, Yang K, Liu C, Liang Z. Cloning and Expression of Human Stem Cell Factor Fused with Thrombopoietin Mimetic Peptide in Escherichia coli. Biotechnol Lett 2006; 28:857-62. [PMID: 16786269 DOI: 10.1007/s10529-006-9017-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Accepted: 02/21/2006] [Indexed: 11/25/2022]
Abstract
Thrombopoietin (TPO) acts synergistically with stem cell factor (SCF) in hematopoiesis and megakaryopoiesis. In this work, we designed the expression of SCF fused with the monomer or the dimer of TPO mimetic peptide through a flexible peptide linker. The recombinant fusion proteins were produced in E. coli DH5alpha at up to 25% of total cell proteins. The resultant inclusion bodies were refolded by dilution and purified by ion-exchange chromatography. Subsequent biological activity assays showed that the fusion proteins exhibited higher potency than recombinant human SCF, indicating that they have a potential role for pharmaceutical applications.
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Affiliation(s)
- Lin Su
- National Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Peking Union Medical College, Beijing, China
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13
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Triozzi PL, Aldrich W, Allen KO, Carlisle RR, LoBuglio AF, Conry RM. Phase I Study of a Plasmid DNA Vaccine Encoding MART-1 in Patients with Resected Melanoma at Risk for Relapse. J Immunother 2005; 28:382-8. [PMID: 16000957 DOI: 10.1097/01.cji.0000162779.88687.4c] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Immunization with plasmid DNA represents an attractive method for increasing cellular immune responses against cancer antigens. The safety and immunologic response of a plasmid encoding the MART-1 melanocyte differentiation antigen was evaluated in 12 patients with resected melanoma at risk for relapse. As a control, patients were also administered a plasmid encoding hepatitis B surface antigen (HBsAg). After establishing immunologic activity of the vaccines in mice, groups of three to six HLA-A2-positive patients were enrolled into one of three cohorts in which they received intramuscular injections of the MART-1 plasmid into the right deltoid and the HBsAg plasmid into the left deltoid at doses of 0.1, 0.3, or 1.0 mg on days 1, 43, 85, and 127. Injections were well tolerated. Toxicity was limited to grade 1 pain and injection site tenderness. Systemic toxicity was not observed. Although baseline MART-1-specific lymphoproliferative and ELISPOT responses were evident, no patient manifested increases after injection of the MART-1 plasmid. Furthermore, changes in MART-1-specific precursors were not evident after immunization as assessed by an in vitro stimulation assay. No patients manifested a lymphoproliferative response to HBsAg antigen, and significant antibody responses to HBsAg were also not observed. Although injections were safe, the authors could not show significant immunologic responses to plasmid encoding MART-1 or HBsAg using the dose, schedule, and route of administration applied. This study underscores species differences in the ability to respond to plasmid immunogens.
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Affiliation(s)
- Pierre L Triozzi
- University of Alabama at Birmingham Comprehensive Cancer Center, Alabama 35294-3300, USA.
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14
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Lima J, Jenkins C, Guerrero A, Triozzi PL, Shaw DR, Strong TV. A DNA vaccine encoding genetic fusions of carcinoembryonic antigen (CEA) and granulocyte/macrophage colony-stimulating factor (GM-CSF). Vaccine 2005; 23:1273-83. [PMID: 15652670 DOI: 10.1016/j.vaccine.2004.08.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2003] [Revised: 08/03/2004] [Accepted: 08/24/2004] [Indexed: 10/26/2022]
Abstract
The anti-tumor immunologic effects of plasmid DNA vaccines encoding human carcinoembryonic antigen (CEA) fused to mouse granulocyte/macrophage colony-stimulating factor (GM-CSF) were examined. Immunization of C57BL/6 mice with the CEA-GMCSF fusion plasmids in a three injection, high-dose immunization schedule led to T cell and antibody responses specific for CEA. Mice injected with CEA-GMCSF fusion plasmids also developed IgG autoantibodies to GM-CSF. Tumor challenge with the CEA-expressing syngeneic mouse adenocarcinoma line, MC38-CEA-2, showed delayed tumor growth in mice immunized with the CEA-GMCSF fusion plasmids but complete protection in mice immunized with plasmid encoding CEA alone. In contrast, a single low-dose immunization with CEA-GMCSF fusion plasmids provided better tumor protection than low-dose CEA plasmid alone and resulted in lower titers of GM-CSF antibodies.
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Affiliation(s)
- Jose Lima
- Division of Hematology and Oncology, Department of Medicine, and the Comprehensive Cancer Center, University of Alabama at Birmingham, WTI 558, 1824 6th Avenue South, Birmingham, AL 35294-3300, USA
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Chirino AJ, Mire-Sluis A. Characterizing biological products and assessing comparability following manufacturing changes. Nat Biotechnol 2005; 22:1383-91. [PMID: 15529163 DOI: 10.1038/nbt1030] [Citation(s) in RCA: 230] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Changes in production methods of a biological product may necessitate an assessment of comparability to ensure that these manufacturing changes have not affected the safety, identity, purity, or efficacy of the product. Depending on the nature of the protein or the change, this assessment consists of a hierarchy of sequential tests in analytical testing, preclinical animal studies and clinical studies. Differences in analytical test results between pre- and post-change products may require functional testing to establish the biological or clinical significance of the observed difference. An underlying principle of comparability is that under certain conditions, protein products may be considered comparable on the basis of analytical testing results alone. However, the ability to compare biological materials is solely dependent on the tests used, since no single analytical method is able to compare every aspect of protein structure or function. The advantages and disadvantages of any given method depends on the protein property being characterized.
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Affiliation(s)
- Arthur J Chirino
- Xencor Inc., 111 West Lemon Avenue, Monrovia, Calfornia 91016, USA.
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16
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Schellekens H. Immunogenicity of therapeutic proteins: clinical implications and future prospects. Clin Ther 2002; 24:1720-40; discussion 1719. [PMID: 12501870 DOI: 10.1016/s0149-2918(02)80075-3] [Citation(s) in RCA: 357] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Therapeutic proteins have revolutionized the treatment of many diseases. In the near future, many more therapeutic proteins are likely to become available for an increasingly wide range of indications. OBJECTIVES This article reviews the incidence, causes, and consequences of formation of antibodies to therapeutic proteins and suggests ways to address issues surrounding immunogenicity. METHODS Searches of MEDLINE and EMBASE databases were performed, covering the period 1990 to May 2002. Search terms included immunogenicity, antibodies, and the names of specific therapeutic proteins and classes of therapeutic proteins. Bibliographies of retrieved articles were not searched. RESULTS All exogenous proteins, including therapeutic ones, have the potential to cause antibody formation. The reported incidence of antibody formation with therapeutic proteins varies widely between proteins and between studies (depending on the assay techniques used). The clinical consequences of antibody formation vary with the type of antibody present; for example, neutralizing antibodies are more likely to cause loss of efficacy than nonneutralizing antibodies. The immunogenicity of therapeutic proteins can be influenced by many factors, including the genetic background of the patient, the type of disease, the type of protein (human or nonhuman), the presence of conjugates or fragments, the route of administration, dose frequency, and duration of treatment. Manufacturing, handling, and storage can introduce contaminants, or alter the 3-dimensional structure of the protein via oxidation or aggregate formation. Various means have been suggested by which therapeutic proteins might be modified to reduce their immunogenicity, including PEGylation, site-specific mutagenesis, exon shuffling, and humanization of monoclonal antibodies. In the future, it may even be possible to predict the immunogenicity of new therapeutic proteins more accurately, using specifically designed animal models, including nonhuman primates and transgenic mice. CONCLUSIONS Scientists and clinicians are becoming increasingly aware of the importance of assessing the immunogenicity of new molecules as they are introduced, and of existing molecules whenever they are modified or their manufacturing process is changed. Immune responses to therapeutic proteins are usually only of clinical significance if they are associated with the development of treatment resistance. Although various means to reduce the immunogenicity of therapeutic proteins have been suggested, monitoring for antibodies during clinical trials and postmarketing surveillance remains an important issue for all therapeutic proteins.
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Affiliation(s)
- Huub Schellekens
- Center Laboratory Animal Institute, Department of Innovation Studies, Utrecht University, Utrecht, The Netherlands.
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Cavagnaro JA. Preclinical safety evaluation of biotechnology-derived pharmaceuticals. Nat Rev Drug Discov 2002; 1:469-75. [PMID: 12119749 DOI: 10.1038/nrd822] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Delivery of pharmacological doses of proteins to people has raised concerns of inducing immune responses, especially when the protein is provided in multiple doses over an extended period of time. Immune responses could impact the therapeutic exposure and efficacy of the protein itself. In addition, there have been fears of anaphylaxis or autoimmunity. This review summarizes the available literature regarding the measurement and evaluation of immune responses observed during clinical assessment of recombinant human proteins. Immune responses have ranged from none at all to inactivation and/or accelerated clearance. Presence of antibodies does not necessarily impact therapeutic viability. While responses are related to frequency and route of delivery, there is no clear relationship that enables one to predict the clinical experience.
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Affiliation(s)
- S Porter
- Cerus Corporation, 2411 Stanwell Drive, Concord, California 94520, USA.
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Abstract
Thrombocytopenia that results from chemotherapy has become an increasingly important issue in the treatment of cancer and remains a difficult clinical problem. The identification of a safe and effective platelet growth factor could significantly improve the management of severe chemotherapy-induced thrombocytopenia. Over the past decade, a number of hematopoietic growth factors with thrombopoietic activity have been identified, including stem-cell factor (c-kit ligand), interleukin (IL)-1, IL-3, IL-6, and IL-11, as well as thrombopoietin (TPO) and its derivatives. Only a few of these agents have shown acceptable tolerability and sufficient ability to stimulate thrombopoiesis to justify testing in randomized clinical trials. Currently, IL-11 is the only cytokine licensed in the United States for treatment of chemotherapy-induced thrombocytopenia. However, its thrombopoietic activity is modest and its use is often associated with unfavorable side effects. Identification of TPO, the c-Mpl ligand, as the primary physiologic regulator of megakaryocyte and platelet development offers important promise for treatment of thrombocytopenia. Preliminary clinical studies of recombinant human TPO (rhTPO), a full-length glycosylated molecule, indicate that it is safe and biologically active in reducing severe chemotherapy-induced thrombocytopenia. In addition to rhTPO, the future may see the development of novel genetically engineered, high-affinity cytokine receptor agonists and c-Mpl ligand mimetic peptides.
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Affiliation(s)
- G D Demetri
- Center for Sarcoma and Bone Oncology, Dana-Farber Cancer Institute, Boston, MA 02115-6084, USA
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