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Vázquez Torres S, Leung PJY, Venkatesh P, Lutz ID, Hink F, Huynh HH, Becker J, Yeh AHW, Juergens D, Bennett NR, Hoofnagle AN, Huang E, MacCoss MJ, Expòsit M, Lee GR, Bera AK, Kang A, De La Cruz J, Levine PM, Li X, Lamb M, Gerben SR, Murray A, Heine P, Korkmaz EN, Nivala J, Stewart L, Watson JL, Rogers JM, Baker D. De novo design of high-affinity binders of bioactive helical peptides. Nature 2024; 626:435-442. [PMID: 38109936 PMCID: PMC10849960 DOI: 10.1038/s41586-023-06953-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 12/07/2023] [Indexed: 12/20/2023]
Abstract
Many peptide hormones form an α-helix on binding their receptors1-4, and sensitive methods for their detection could contribute to better clinical management of disease5. De novo protein design can now generate binders with high affinity and specificity to structured proteins6,7. However, the design of interactions between proteins and short peptides with helical propensity is an unmet challenge. Here we describe parametric generation and deep learning-based methods for designing proteins to address this challenge. We show that by extending RFdiffusion8 to enable binder design to flexible targets, and to refining input structure models by successive noising and denoising (partial diffusion), picomolar-affinity binders can be generated to helical peptide targets by either refining designs generated with other methods, or completely de novo starting from random noise distributions without any subsequent experimental optimization. The RFdiffusion designs enable the enrichment and subsequent detection of parathyroid hormone and glucagon by mass spectrometry, and the construction of bioluminescence-based protein biosensors. The ability to design binders to conformationally variable targets, and to optimize by partial diffusion both natural and designed proteins, should be broadly useful.
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Affiliation(s)
- Susana Vázquez Torres
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Graduate Program in Biological Physics, Structure and Design, University of Washington, Seattle, WA, USA
| | - Philip J Y Leung
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Graduate Program in Molecular Engineering, University of Washington, Seattle, WA, USA
| | - Preetham Venkatesh
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Graduate Program in Biological Physics, Structure and Design, University of Washington, Seattle, WA, USA
| | - Isaac D Lutz
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - Fabian Hink
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Huu-Hien Huynh
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Jessica Becker
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Andy Hsien-Wei Yeh
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - David Juergens
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Graduate Program in Molecular Engineering, University of Washington, Seattle, WA, USA
| | - Nathaniel R Bennett
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Graduate Program in Molecular Engineering, University of Washington, Seattle, WA, USA
| | - Andrew N Hoofnagle
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Eric Huang
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - Michael J MacCoss
- Department of Genome Sciences, University of Washington, Seattle, WA, USA
| | - Marc Expòsit
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
- Graduate Program in Molecular Engineering, University of Washington, Seattle, WA, USA
| | - Gyu Rie Lee
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Asim K Bera
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Alex Kang
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Joshmyn De La Cruz
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Paul M Levine
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Xinting Li
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Mila Lamb
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Stacey R Gerben
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Analisa Murray
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Piper Heine
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Elif Nihal Korkmaz
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Jeff Nivala
- School of Computer Science and Engineering, University of Washington, Seattle, WA, USA
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA, USA
| | - Lance Stewart
- Department of Biochemistry, University of Washington, Seattle, WA, USA
- Institute for Protein Design, University of Washington, Seattle, WA, USA
| | - Joseph L Watson
- Department of Biochemistry, University of Washington, Seattle, WA, USA.
- Institute for Protein Design, University of Washington, Seattle, WA, USA.
| | - Joseph M Rogers
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark.
| | - David Baker
- Department of Biochemistry, University of Washington, Seattle, WA, USA.
- Institute for Protein Design, University of Washington, Seattle, WA, USA.
- Howard Hughes Medical Institute, University of Washington, Seattle, WA, USA.
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2
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Schafer C, Young D, Singh H, Jayakrishnan R, Banerjee S, Song Y, Dobi A, Petrovics G, Srivastava S, Srivastava S, Sesterhenn IA, Chesnut GT, Tan SH. Development and characterization of an ETV1 rabbit monoclonal antibody for the immunohistochemical detection of ETV1 expression in cancer tissue specimens. J Immunol Methods 2023; 518:113493. [PMID: 37196930 PMCID: PMC10802095 DOI: 10.1016/j.jim.2023.113493] [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: 03/01/2023] [Revised: 05/10/2023] [Accepted: 05/13/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Aberrant ETV1 overexpression arising from gene rearrangements or mutations occur frequently in prostate cancer, round cell sarcomas, gastrointestinal stromal tumors, gliomas, and other malignancies. The absence of specific monoclonal antibodies (mAb) has limited its detection and our understanding of its oncogenic function. METHODS An ETV1 specific rabbit mAb (29E4) was raised using an immunogenic peptide. Key residues essential for its binding were probed by ELISA and its binding kinetics were measured by surface plasmon resonance imaging (SPRi). Its selective binding to ETV1 was assessed by immunoblots and immunofluorescence assays (IFA), and by both single and double-immuno-histochemistry (IHC) assays on prostate cancer tissue specimens. RESULTS Immunoblot results showed that the mAb is highly specific and lacked cross-reactivity with other ETS factors. A minimal epitope with two phenylalanine residues at its core was found to be required for effective mAb binding. SPRi measurements revealed an equilibrium dissociation constant in the picomolar range, confirming its high affinity. ETV1 (+) tumors were detected in prostate cancer tissue microarray cases evaluated. IHC staining of whole-mounted sections revealed glands with a mosaic staining pattern of cells that are partly ETV1 (+) and interspersed with ETV1 (-) cells. Duplex IHC, using ETV1 and ERG mAbs, detected collision tumors containing glands with distinct ETV1 (+) and ERG (+) cells. CONCLUSIONS The selective detection of ETV1 by the 29E4 mAb in immunoblots, IFA, and IHC assays using human prostate tissue specimens reveals a potential utility for the diagnosis, the prognosis of prostate adenocarcinoma and other cancers, and the stratification of patients for treatment by ETV1 inhibitors.
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Affiliation(s)
- Cara Schafer
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Denise Young
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Harpreet Singh
- Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA
| | - Rahul Jayakrishnan
- Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA
| | - Sreedatta Banerjee
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Yingjie Song
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Albert Dobi
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Gyorgy Petrovics
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA
| | - Sudhir Srivastava
- Cancer Biomarkers Research Group, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD 20892, USA
| | - Shiv Srivastava
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA
| | | | - Gregory T Chesnut
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Urology Service, Walter Reed National Military Medical Center, Bethesda, MD, 20852, USA
| | - Shyh-Han Tan
- Center for Prostate Disease Research, Murtha Cancer Center Research Program, Department of Surgery, Uniformed Services University of the Health Sciences, Bethesda, MD 20817, USA; Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD 20817, USA.
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3
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Sloos PH, Maas MAW, Meijers JCM, Nieuwland R, Roelofs JJTH, Juffermans NP, Kleinveld DJB. Anti-high-mobility group box-1 treatment strategies improve trauma-induced coagulopathy in a mouse model of trauma and shock. Br J Anaesth 2023; 130:687-697. [PMID: 36967283 DOI: 10.1016/j.bja.2023.01.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 01/09/2023] [Accepted: 01/30/2023] [Indexed: 05/19/2023] Open
Abstract
BACKGROUND Trauma-induced coagulopathy is associated with platelet dysfunction and contributes to early mortality after traumatic injury. Plasma concentrations of the damage molecule high-mobility group box-1 (HMGB-1) increase after trauma, which may contribute to platelet dysfunction. We hypothesised that inhibition of HMGB-1 with a monoclonal antibody (mAb) or with recombinant thrombomodulin (rTM) improves trauma-induced coagulopathy in a murine model of trauma and shock. METHODS Male 129S2/SvPasOrlRJ mice were anaesthetised, mechanically ventilated, and randomised into five groups: (i) ventilation control (VENT), (ii) trauma/shock (TS), (iii) TS+anti-HMGB-1 mAb (TS+AB), (iv) TS+rTM (TS+TM), and (v) TS+anti-HMGB-1 mAb+rTM (TS+COMBI). Primary outcome was rotational thromboelastometry EXTEM. Secondary outcomes included tail bleeding time, platelet count, plasma HMGB-1 concentration, and platelet activation. RESULTS Trauma and shock resulted in a hypocoagulable thromboelastometry profile, increased plasma HMGB-1, and increased platelet activation markers. TS+AB was associated with improved clot firmness after 5 min compared with TS (34 [33-37] vs 32 [29-34] mm; P=0.043). TS+COMBI was associated with decreased clot formation time (98 [92-125] vs 122 [111-148] s; P=0.018) and increased alpha angle (77 [72-78] vs 69 [64-71] degrees; P=0.003) compared with TS. TS+COMBI also reduced tail bleeding time compared with TS (P=0.007). The TS+TM and TS+COMBI groups had higher platelet counts compared with TS (P=0.044 and P=0.041, respectively). CONCLUSIONS Inhibition of HMGB-1 early after trauma in a mouse model improves clot formation and strength, preserves platelet count, and decreases bleeding time.
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Affiliation(s)
- Pieter H Sloos
- Amsterdam UMC Location University of Amsterdam, Department of Intensive Care Medicine, Amsterdam, the Netherlands; Amsterdam UMC Location University of Amsterdam, Laboratory of Experimental Intensive Care and Anesthesiology, Amsterdam, the Netherlands
| | - M Adrie W Maas
- Amsterdam UMC Location University of Amsterdam, Laboratory of Experimental Intensive Care and Anesthesiology, Amsterdam, the Netherlands
| | - Joost C M Meijers
- Amsterdam UMC Location University of Amsterdam, Department of Experimental Vascular Medicine, Amsterdam, the Netherlands; Amsterdam Cardiovascular Sciences, Pulmonary Hypertension and Thrombosis, Amsterdam, the Netherlands; Sanquin Research, Department of Molecular Hematology, Amsterdam, the Netherlands
| | - Rienk Nieuwland
- Amsterdam UMC Location University of Amsterdam, Laboratory of Experimental Clinical Chemistry, Amsterdam, the Netherlands; Amsterdam UMC Location University of Amsterdam, Vesicle Observation Center, Amsterdam, the Netherlands
| | - Joris J T H Roelofs
- Amsterdam UMC Location University of Amsterdam, Department of Pathology, Amsterdam, the Netherlands
| | - Nicole P Juffermans
- Amsterdam UMC Location University of Amsterdam, Department of Intensive Care Medicine, Amsterdam, the Netherlands; Amsterdam UMC Location University of Amsterdam, Laboratory of Experimental Intensive Care and Anesthesiology, Amsterdam, the Netherlands; Onze Lieve Vrouwe Gasthuis, Department of Intensive Care Medicine, Amsterdam, the Netherlands
| | - Derek J B Kleinveld
- Amsterdam UMC Location University of Amsterdam, Department of Intensive Care Medicine, Amsterdam, the Netherlands; Amsterdam UMC Location University of Amsterdam, Laboratory of Experimental Intensive Care and Anesthesiology, Amsterdam, the Netherlands; Erasmus MC, Department of Anesthesiology, Rotterdam, the Netherlands.
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4
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Caucheteux SM, Wheeldon J, Bayliss R, Piguet V. Macrophage Migration Inhibitory Factor Restriction of HIV-1 Transinfection from Dendritic Cells to CD4+ T Cells through the Regulation of Autophagy. J Invest Dermatol 2023; 143:679-682.e4. [PMID: 36257465 DOI: 10.1016/j.jid.2022.09.655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 09/14/2022] [Accepted: 09/16/2022] [Indexed: 01/13/2023]
Affiliation(s)
- Stephan M Caucheteux
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - James Wheeldon
- Systems Immunity Research Institute, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Rebecca Bayliss
- Systems Immunity Research Institute, School of Medicine, Cardiff University, Wales, United Kingdom
| | - Vincent Piguet
- Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada; Division of Dermatology, Department of Medicine, Women's College Hospital, Toronto, Ontario, Canada.
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5
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Shi J, Xiao Y, Zhang N, Jiao M, Tang X, Dai C, Wang C, Xu Y, Tan Z, Gong F, Zheng F. HMGB1 from Astrocytes Promotes EAE by Influencing the Immune Cell Infiltration-Associated Functions of BMECs in Mice. Neurosci Bull 2022; 38:1303-1314. [PMID: 35697993 PMCID: PMC9672173 DOI: 10.1007/s12264-022-00890-1] [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: 01/16/2022] [Accepted: 03/16/2022] [Indexed: 11/24/2022] Open
Abstract
High mobility group box 1 (HMGB1) has been reported to play an important role in experimental autoimmune encephalomyelitis (EAE). Astrocytes are important components of neurovascular units and tightly appose the endothelial cells of microvessels by their perivascular endfeet and directly regulate the functions of the blood-brain barrier. Astrocytes express more HMGB1 during EAE while the exact roles of astrocytic HMGB1 in EAE have not been well elucidated. Here, using conditional-knockout mice, we found that astrocytic HMGB1 depletion decreased morbidity, delayed the onset time, and reduced the disease score and demyelination of EAE. Meanwhile, there were fewer immune cells, especially pathogenic T cells infiltration in the central nervous system of astrocytic HMGB1 conditional-knockout EAE mice, accompanied by up-regulated expression of the tight-junction protein Claudin5 and down-regulated expression of the cell adhesion molecules ICAM1 and VCAM1 in vivo. In vitro, HMGB1 released from astrocytes decreased Claudin5 while increased ICAM1 and VCAM1 expressed by brain microvascular endothelial cells (BMECs) through TLR4 or RAGE. Taken together, our results demonstrate that HMGB1 derived from astrocytes aggravates EAE by directly influencing the immune cell infiltration-associated functions of BMECs.
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Affiliation(s)
- Junyu Shi
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yifan Xiao
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, 430056, China
| | - Na Zhang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Mengya Jiao
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xuhuan Tang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chan Dai
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Chenchen Wang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yong Xu
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zheng Tan
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, 430030, China
| | - Feili Gong
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Fang Zheng
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
- Key Laboratory of Organ Transplantation, Ministry of Education, NHC Key Laboratory of Organ Transplantation, Key Laboratory of Organ Transplantation, Chinese Academy of Medical Sciences, Wuhan, 430030, China.
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Bhat SM, Massey N, Shrestha D, Karriker LA, Jelesijević T, Wang C, Charavaryamath C. Transcriptomic and ultrastructural evidence indicate that anti-HMGB1 antibodies rescue organic dust-induced mitochondrial dysfunction. Cell Tissue Res 2022; 388:373-398. [PMID: 35244775 PMCID: PMC10155187 DOI: 10.1007/s00441-022-03602-3] [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: 08/04/2021] [Accepted: 02/22/2022] [Indexed: 11/02/2022]
Abstract
Exposure to organic dust (OD) in agriculture is known to cause respiratory symptoms including loss of lung function. OD exposure activates multiple signaling pathways since it contains a variety of microbial products and particulate matter. Previously, we have shown how OD exposure leads to the secretion of HMGB1 and HMGB1-RAGE signaling, and how this can be a possible therapeutic target to reduce inflammation. Cellular mitochondria are indispensable for homeostasis and are emerging targets to curtail inflammation. Recently, we have also observed that OD exposure induces mitochondrial dysfunction characterized by loss of structural integrity and deficits in bioenergetics. However, the role of HMGB1 in OD-induced mitochondrial dysfunction in human bronchial epithelial (NHBE) cells remains elusive. Therefore, we aimed to study whether decreased levels of intracellular HMGB1 or antibody-mediated neutralization of secreted HMGB1 would rescue mitochondrial dysfunction. Single and repeated ODE exposure showed an elongated mitochondrial network and cristolysis whereas HMGB1 neutralization or the lack thereof promotes mitochondrial biogenesis evidenced by increased mitochondrial fragmentation, increased DRP1 expression, decreased MFN2 expression, and increased PGC1α expression. Repeated 5-day ODE exposure significantly downregulated transcripts encoding mitochondrial respiration and metabolism (ATP synthase, NADUF, and UQCR) as well as glucose uptake. This was reversed by the antibody-mediated neutralization of HMGB1. Our results support our hypothesis that, in NHBE cells, neutralization of ODE-induced HMGB1 secretion rescues OD-induced mitochondrial dysfunction.
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Affiliation(s)
- Sanjana Mahadev Bhat
- Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
- Immunobiology Interdepartmental Graduate Program, Iowa State University, Ames, IA, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
| | - Nyzil Massey
- Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Denusha Shrestha
- Department of Biomedical Sciences, Iowa State University, Ames, IA, USA
| | - Locke A Karriker
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
| | - Tomislav Jelesijević
- Department of Comparative Biological Sciences, Louisiana State University, Baton Rouge, LA, USA
| | - Chong Wang
- Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, Ames, IA, USA
- Department of Statistics, Iowa State University, Ames, IA, USA
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Muhsin A, Rangel R, Vien L, Bover L. Monoclonal Antibodies Generation: Updates and Protocols on Hybridoma Technology. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2022; 2435:73-93. [PMID: 34993940 DOI: 10.1007/978-1-0716-2014-4_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Since its inception in 1975, the hybridoma technology revolutionized science and medicine, facilitating discoveries in almost any field from the laboratory to the clinic. Many technological advancements have been developed since then, to create these "magical bullets." Phage and yeast display libraries expressing the variable heavy and light domains of antibodies, single B-cell cloning from immunized animals of different species including humans or in silico approaches, all have rendered a myriad of newly developed antibodies or improved design of existing ones. However, still the majority of these antibodies or their recombinant versions are from hybridoma origin, a preferred methodology that trespass species barriers, due to the preservation of the natural functions of immune cells in producing the humoral response: antigen specific immunoglobulins. Remarkably, this methodology can be reproduced in small laboratories without the need of sophisticate equipment. In this chapter, we will describe the most recent methods utilized by our Monoclonal Antibodies Core Facility at the University of Texas-M.D. Anderson Cancer Center. During the last 10 years, the methods, techniques, and expertise implemented in our core had generated more than 350 antibodies for various applications.
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Affiliation(s)
- Ahmed Muhsin
- Department of Immunology, The University of Texas MD Anderson Cancer Center (MDACC), Houston, TX, USA.,Center for Translational Cancer Research, Institute of Biosciences and Technology, Texas A&M University, Houston, TX, USA
| | - Roberto Rangel
- Department of Head and Neck Surgery, The University of Texas MD Anderson Cancer Center (MDACC), Houston, TX, USA
| | - Long Vien
- Department of Immunology, The University of Texas MD Anderson Cancer Center (MDACC), Houston, TX, USA
| | - Laura Bover
- Department of Immunology, The University of Texas MD Anderson Cancer Center (MDACC), Houston, TX, USA. .,Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center (MDACC), Houston, TX, USA.
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8
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Ogunpaimo OJ, Ojoawo HT, Wheto MY, Adebambo AO, Adebambo OA. Association of insulin-like growth factor 1 (IGF1) gene polymorphism with the reproductive performance of three dual-purpose chicken breeds. Transl Anim Sci 2021; 5:txab215. [PMID: 34988376 PMCID: PMC8706822 DOI: 10.1093/tas/txab215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/11/2021] [Indexed: 11/14/2022] Open
Abstract
The study was designed to investigate the association of Insulin-like growth factor 1 (IGF1) gene polymorphism with the reproductive performance of FUNAAB-Alpha, Sasso, and Kuroiler dual-purpose chicken breeds. To achieve this, a total of 250 healthy hens were selected at 12 wk of age and were intensively managed in cages for 52 wk. Blood sample was taken from each chicken at the 34th week and genomic DNA was extracted using Qiagentm DNA extraction kit, PCR was used to amplify the DNA fragments, and the PCR products were electrophoresed. Amplicons obtained were digested with restriction enzyme hinf1, and were further electrophoresed on 1.5% agarose gel. Data obtained were analyzed using the General linear model of SAS (2002) version 9.0 to determine the effect of IGF1 gene polymorphism and the distribution of alleles within the breeds. Results show polymorphism of the IGF1 gene and the restriction analysis indicated two alleles; A 58% and C 42% with the identification of genotypes AA, AC, and CC, and genotypic frequency of 22%, 43%, and 35%, respectively. Significant associations were observed between the polymorphism of the IGF1 gene, age of the bird at first lay, and weight of the hen at first lay. Chickens with haplotype CC came earlier into lay compared to those with the other two haplotypes (AA and AC). Therefore, the study suggests that haplotype CC could be used as a genetic marker to select for an improved laying performance in chickens.
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Affiliation(s)
- Olaiwola J Ogunpaimo
- Directorate of University Farms, Federal University of Agriculture, Abeokuta, Ogun State, PMB 2240, Nigeria
| | - Henry T Ojoawo
- Center of Excellence in Agricultural Development and Sustainable Environment, Federal University of Agriculture, Abeokuta, Ogun State, PMB 2240, Nigeria
| | - Mathew Y Wheto
- Department of Animal Breeding and Genetics, Federal University of Agriculture, Abeokuta, Ogun State, PMB 2240, Nigeria
| | - Ayotunde O Adebambo
- Department of Animal Breeding and Genetics, Federal University of Agriculture, Abeokuta, Ogun State, PMB 2240, Nigeria
| | - Olufunmilayo A Adebambo
- Department of Animal Breeding and Genetics, Federal University of Agriculture, Abeokuta, Ogun State, PMB 2240, Nigeria
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9
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de Mingo Pulido Á, Hänggi K, Celias DP, Gardner A, Li J, Batista-Bittencourt B, Mohamed E, Trillo-Tinoco J, Osunmakinde O, Peña R, Onimus A, Kaisho T, Kaufmann J, McEachern K, Soliman H, Luca VC, Rodriguez PC, Yu X, Ruffell B. The inhibitory receptor TIM-3 limits activation of the cGAS-STING pathway in intra-tumoral dendritic cells by suppressing extracellular DNA uptake. Immunity 2021; 54:1154-1167.e7. [PMID: 33979578 DOI: 10.1016/j.immuni.2021.04.019] [Citation(s) in RCA: 109] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 02/24/2021] [Accepted: 04/16/2021] [Indexed: 12/17/2022]
Abstract
Blockade of the inhibitory receptor TIM-3 shows efficacy in cancer immunotherapy clinical trials. TIM-3 inhibits production of the chemokine CXCL9 by XCR1+ classical dendritic cells (cDC1), thereby limiting antitumor immunity in mammary carcinomas. We found that increased CXCL9 expression by splenic cDC1s upon TIM-3 blockade required type I interferons and extracellular DNA. Chemokine expression as well as combinatorial efficacy of TIM-3 blockade and paclitaxel chemotherapy were impaired by deletion of Cgas and Sting. TIM-3 blockade increased uptake of extracellular DNA by cDC1 through an endocytic process that resulted in cytoplasmic localization. DNA uptake and efficacy of TIM-3 blockade required DNA binding by HMGB1, while galectin-9-induced cell surface clustering of TIM-3 was necessary for its suppressive function. Human peripheral blood cDC1s also took up extracellular DNA upon TIM-3 blockade. Thus, TIM-3 regulates endocytosis of extracellular DNA and activation of the cytoplasmic DNA sensing cGAS-STING pathway in cDC1s, with implications for understanding the mechanisms underlying TIM-3 immunotherapy.
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Affiliation(s)
- Álvaro de Mingo Pulido
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Kay Hänggi
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Daiana P Celias
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Alycia Gardner
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Jie Li
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Bruna Batista-Bittencourt
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Eslam Mohamed
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Jimena Trillo-Tinoco
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Olabisi Osunmakinde
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Cancer Biology PhD Program, University of South Florida, Tampa, FL 33620, USA; Department of Health Science and Technology, Aalborg University, Aalborg 29220, Denmark
| | - Reymi Peña
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Alexis Onimus
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Molecular Medicine PhD Program, University of South Florida, Tampa, FL 33620, USA
| | - Tsuneyasu Kaisho
- Institute for Advanced Medicine, Wakayama Medical University, Wakayama 641-8509, Japan
| | - Johanna Kaufmann
- Immuno-Oncology & Combinations Research Unit, GSK, Waltham, MA 02451, USA
| | | | - Hatem Soliman
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Breast Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Vincent C Luca
- Department of Drug Discovery, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Paulo C Rodriguez
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Xiaoqing Yu
- Department of Biostatistics and Bioinformatics, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Brian Ruffell
- Department of Immunology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA; Department of Breast Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA.
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10
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Siddiqui SS, Dhar C, Sundaramurthy V, Sasmal A, Yu H, Bandala-Sanchez E, Li M, Zhang X, Chen X, Harrison LC, Xu D, Varki A. Sialoglycan recognition is a common connection linking acidosis, zinc, and HMGB1 in sepsis. Proc Natl Acad Sci U S A 2021; 118:e2018090118. [PMID: 33658363 PMCID: PMC7958265 DOI: 10.1073/pnas.2018090118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Blood pH is tightly maintained between 7.35 and 7.45, and acidosis (pH <7.3) indicates poor prognosis in sepsis, wherein lactic acid from anoxic tissues overwhelms the buffering capacity of blood. Poor sepsis prognosis is also associated with low zinc levels and the release of High mobility group box 1 (HMGB1) from activated and/or necrotic cells. HMGB1 added to whole blood at physiological pH did not bind leukocyte receptors, but lowering pH with lactic acid to mimic sepsis conditions allowed binding, implying the presence of natural inhibitor(s) preventing binding at normal pH. Testing micromolar concentrations of divalent cations showed that zinc supported the robust binding of sialylated glycoproteins with HMGB1. Further characterizing HMGB1 as a sialic acid-binding lectin, we found that optimal binding takes place at normal blood pH and is markedly reduced when pH is adjusted with lactic acid to levels found in sepsis. Glycan array studies confirmed the binding of HMGB1 to sialylated glycan sequences typically found on plasma glycoproteins, with binding again being dependent on zinc and normal blood pH. Thus, HMGB1-mediated hyperactivation of innate immunity in sepsis requires acidosis, and micromolar zinc concentrations are protective. We suggest that the potent inflammatory effects of HMGB1 are kept in check via sequestration by plasma sialoglycoproteins at physiological pH and triggered when pH and zinc levels fall in late stages of sepsis. Current clinical trials independently studying zinc supplementation, HMGB1 inhibition, or pH normalization may be more successful if these approaches are combined and perhaps supplemented by infusions of heavily sialylated molecules.
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Affiliation(s)
- Shoib S Siddiqui
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093
- Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA 92093
| | - Chirag Dhar
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093
- Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA 92093
| | - Venkatasubramaniam Sundaramurthy
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093
- Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA 92093
| | - Aniruddha Sasmal
- Department of Medicine, University of California San Diego, La Jolla, CA 92093
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093
- Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA 92093
| | - Hai Yu
- Department of Chemistry, University of California, Davis, CA 95616
| | - Esther Bandala-Sanchez
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Miaomiao Li
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, The State University of New York, Buffalo, NY 14214
| | - Xiaoxiao Zhang
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, The State University of New York, Buffalo, NY 14214
| | - Xi Chen
- Department of Chemistry, University of California, Davis, CA 95616
| | - Leonard C Harrison
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3010, Australia
| | - Ding Xu
- Department of Oral Biology, School of Dental Medicine, University at Buffalo, The State University of New York, Buffalo, NY 14214
| | - Ajit Varki
- Department of Medicine, University of California San Diego, La Jolla, CA 92093;
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093
- Glycobiology Research and Training Center, University of California San Diego, La Jolla, CA 92093
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11
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Wanke A, Malisic M, Wawra S, Zuccaro A. Unraveling the sugar code: the role of microbial extracellular glycans in plant-microbe interactions. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:15-35. [PMID: 32929496 PMCID: PMC7816849 DOI: 10.1093/jxb/eraa414] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 09/14/2020] [Indexed: 05/14/2023]
Abstract
To defend against microbial invaders but also to establish symbiotic programs, plants need to detect the presence of microbes through the perception of molecular signatures characteristic of a whole class of microbes. Among these molecular signatures, extracellular glycans represent a structurally complex and diverse group of biomolecules that has a pivotal role in the molecular dialog between plants and microbes. Secreted glycans and glycoconjugates such as symbiotic lipochitooligosaccharides or immunosuppressive cyclic β-glucans act as microbial messengers that prepare the ground for host colonization. On the other hand, microbial cell surface glycans are important indicators of microbial presence. They are conserved structures normally exposed and thus accessible for plant hydrolytic enzymes and cell surface receptor proteins. While the immunogenic potential of bacterial cell surface glycoconjugates such as lipopolysaccharides and peptidoglycan has been intensively studied in the past years, perception of cell surface glycans from filamentous microbes such as fungi or oomycetes is still largely unexplored. To date, only few studies have focused on the role of fungal-derived cell surface glycans other than chitin, highlighting a knowledge gap that needs to be addressed. The objective of this review is to give an overview on the biological functions and perception of microbial extracellular glycans, primarily focusing on their recognition and their contribution to plant-microbe interactions.
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Affiliation(s)
- Alan Wanke
- University of Cologne, Cluster of Excellence on Plant Sciences (CEPLAS), Institute for Plant Sciences, Cologne, Germany
- Max Planck Institute for Plant Breeding Research, Cologne, Germany
| | - Milena Malisic
- University of Cologne, Cluster of Excellence on Plant Sciences (CEPLAS), Institute for Plant Sciences, Cologne, Germany
| | - Stephan Wawra
- University of Cologne, Cluster of Excellence on Plant Sciences (CEPLAS), Institute for Plant Sciences, Cologne, Germany
| | - Alga Zuccaro
- University of Cologne, Cluster of Excellence on Plant Sciences (CEPLAS), Institute for Plant Sciences, Cologne, Germany
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12
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Shi X, Yu L, Zhang Y, Liu Z, Zhang H, Zhang Y, Liu P, Du P. Glycyrrhetinic acid alleviates hepatic inflammation injury in viral hepatitis disease via a HMGB1-TLR4 signaling pathway. Int Immunopharmacol 2020; 84:106578. [PMID: 32416454 PMCID: PMC7205693 DOI: 10.1016/j.intimp.2020.106578] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 04/24/2020] [Accepted: 05/06/2020] [Indexed: 12/24/2022]
Abstract
Licorice defect in TCM recipes leads to the hepatotoxicity in administrated mice. GA inhibits viral hepatitis by suppressing HMGB1 release and cytokine activity. GA treatment effect on infected mice is similar with HMGB1 neutralizing antibody. HMGB1-TLR4 axis is involved in murine hepatic injury during MHV infection.
Various human disorders are cured by the use of licorice, a key ingredient of herbal remedies. Glycyrrhizic acid (GL), a triterpenoid glycoside, is the aqueous extract from licorice root. Glycyrrhetinic acid (GA) has been reported to be a major bioactive hydrolysis product of GL and has been regarded as an anti-inflammatory agent for the treatment of a variety of inflammatory diseases, including hepatitis. However, the mechanism by which GA inhibits viral hepatic inflammatory injury is not completely understood. In this study, we found that, by consecutively treating mice with a traditional herbal recipe, licorice plays an important role in the detoxification of mice. We also employed a murine hepatitis virus (MHV) infection model to illustrate that GA treatment inhibited activation of hepatic inflammatory responses by blocking high-mobility group box 1 (HMGB1) cytokine activity. Furthermore, decreased HMGB1 levels and downstream signaling triggered by injection of a neutralizing HMGB1 antibody or TLR4 gene deficiency, also significantly protected against MHV-induced severe hepatic injury. Thus, our findings characterize GA as a hepatoprotective therapy agent in hepatic infectious disease not only by suppressing HMGB1 release and blocking HMGB1 cytokine activity, but also via an underlying viral-induced HMGB1-TLR4 immunological regulation axis that occurs during the cytokine storm. The present study provides a new therapy strategy for the treatment of acute viral hepatitis in the clinical setting.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/pharmacology
- Anti-Inflammatory Agents/therapeutic use
- Cell Line
- Cytokines/genetics
- Drugs, Chinese Herbal/pharmacology
- Drugs, Chinese Herbal/therapeutic use
- Female
- Glycyrrhetinic Acid/pharmacology
- Glycyrrhetinic Acid/therapeutic use
- Glycyrrhiza
- HMGB1 Protein/immunology
- Hepatitis, Viral, Animal/drug therapy
- Hepatitis, Viral, Animal/genetics
- Hepatitis, Viral, Animal/immunology
- Liver/drug effects
- Liver/immunology
- Mice, Inbred C57BL
- Mice, Knockout
- Murine hepatitis virus
- Signal Transduction/drug effects
- Toll-Like Receptor 4/genetics
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Affiliation(s)
- Xiaodong Shi
- National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China.
| | - Lijia Yu
- National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China
| | - Yinglin Zhang
- National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China
| | - Zequan Liu
- National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China
| | - Huawei Zhang
- National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China
| | - Yansong Zhang
- National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308, China
| | - Ping Liu
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Peishuang Du
- CAS Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
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13
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Wang J, Li R, Peng Z, Hu B, Rao X, Li J. HMGB1 participates in LPS‑induced acute lung injury by activating the AIM2 inflammasome in macrophages and inducing polarization of M1 macrophages via TLR2, TLR4, and RAGE/NF‑κB signaling pathways. Int J Mol Med 2019; 45:61-80. [PMID: 31746367 PMCID: PMC6889921 DOI: 10.3892/ijmm.2019.4402] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Accepted: 09/30/2019] [Indexed: 12/22/2022] Open
Abstract
High mobility group box 1 (HMGB1), a crucial proinflammatory cytokine, was reported to activate the absent in melanoma 2 (AIM2) inflammasome, which are both essential in acute lung injury (ALI). However, their interaction mechanism has remained elusive. Macrophages are known to express the AIM2 inflammasome and the main receptors [receptor for advanced glycation end products (RAGE), Toll‑like receptor 2/4 (TLR‑2/TLR‑4)] of HMGB1 to transmit intracellular signals. The present study aimed to indicate whether HMGB1 participates in the process of lipopolysaccharides (LPS)‑induced ALI through activating the AIM2 inflammasome in macrophages, as well as inducing polarization of M1 macrophages via TLR2, TLR4 and RAGE/ nuclear factor‑κB (NF‑κB) signaling pathways. In an in vivo mouse model of LPS‑induced ALI, anti‑HMGB1, recombinant (r)HMGB1, LPS from Rhodobacter sphaeroides (LPS‑RS, TLR2/4 antagonist) or FPS‑ZM1 (RAGE antagonist) were administrated. In in vitro studies, bone marrow‑derived macrophages from mice primed with LPS were stimulated with or without anti‑HMGB1, rHMGB1, LPS‑RS, or FPS‑ZM1. The findings revealed that anti‑HMGB1, LPS‑RS and FPS‑ZM1 significantly decreased infiltration of inflammatory cells, wet‑to‑dry ratio, myeloperoxidase activity in the lung, the levels of cytokines, as well as macrophages and neutrophil infiltration in the bronchoalveolar lavage fluid. However, rHMGB1 aggravated the inflammatory response in ALI. Mechanistically, anti‑HMGB1, LPS‑RS and FPS‑ZM1 attenuated activation of TLR2, TLR4, and RAGE/NF‑κB signaling pathways and expression of the AIM2 inflammasome in macrophages. However, rHMGB1 enhanced their expression levels and induced polarization of M1 macrophages. These results indicated that HMGB1 could participate in the pathogenesis of ALI by activating the AIM2 inflammasome in macrophages, as well as inducing polarization of M1 macrophages through TLR2, TLR4 and RAGE/NF‑κB signaling pathways.
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Affiliation(s)
- Jing Wang
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Ruiting Li
- Department of Intensive Care Unit, Wuhan Union Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430000, P.R. China
| | - Zhiyong Peng
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Bo Hu
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Xin Rao
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Jianguo Li
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
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14
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Bhat SM, Massey N, Karriker LA, Singh B, Charavaryamath C. Ethyl pyruvate reduces organic dust-induced airway inflammation by targeting HMGB1-RAGE signaling. Respir Res 2019; 20:27. [PMID: 30728013 PMCID: PMC6364446 DOI: 10.1186/s12931-019-0992-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 01/27/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Animal production workers are persistently exposed to organic dust and can suffer from a variety of respiratory disease symptoms and annual decline in lung function. The role of high mobility group box-1 (HMGB1) in inflammatory airway diseases is emerging. Hence, we tested a hypothesis that organic dust exposure of airway epithelial cells induces nucleocytoplasmic translocation of HMGB1 and blocking this translocation dampens organic dust-induced lung inflammation. METHODS Rats were exposed to either ambient air or swine barn (8 h/day for either 1, 5, or 20 days) and lung tissues were processed for immunohistochemistry. Swine barn dust was collected and organic dust extract (ODE) was prepared and sterilized. Human airway epithelial cell line (BEAS-2B) was exposed to either media or organic dust extract followed by treatment with media or ethyl pyruvate (EP) or anti-HMGB1 antibody. Immunoblotting, ELISA and other assays were performed at 0 (control), 6, 24 and 48 h. Data (as mean ± SEM) was analyzed using one or two-way ANOVA followed by Bonferroni's post hoc comparison test. A p value of less than 0.05 was considered significant. RESULTS Compared to controls, barn exposed rats showed an increase in the expression of HMGB1 in the lungs. Compared to controls, ODE exposed BEAS-2B cells showed nucleocytoplasmic translocation of HMGB1, co-localization of HMGB1 and RAGE, reactive species and pro-inflammatory cytokine production. EP treatment reduced the ODE induced nucleocytoplasmic translocation of HMGB1, HMGB1 expression in the cytoplasmic fraction, GM-CSF and IL-1β production and augmented the production of TGF-β1 and IL-10. Anti-HMGB1 treatment reduced ODE-induced NF-κB p65 expression, IL-6, ROS and RNS but augmented TGF-β1 and IL-10 levels. CONCLUSIONS HMGB1-RAGE signaling is an attractive target to abrogate OD-induced lung inflammation.
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Affiliation(s)
- Sanjana Mahadev Bhat
- Department of Biomedical Sciences, 2008 Vet Med Building, Iowa State University, Ames, IA USA
| | - Nyzil Massey
- Department of Biomedical Sciences, 2008 Vet Med Building, Iowa State University, Ames, IA USA
| | - Locke A. Karriker
- Department of Veterinary Diagnostic and Production Animal Medicine, 2203 Lloyd Veterinary Medical Center, Iowa State university, Ames, IA USA
| | - Baljit Singh
- Faculty of Veterinary Medicine, 2500 University Dr. NW, University of Calgary, Calgary, T2N 1N4 Canada
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15
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Different mice inbred strains humoral immune response against human prostate-specific antigen. UKRAINIAN BIOCHEMICAL JOURNAL 2019. [DOI: 10.15407/ubj91.01.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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16
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Enhancers Improve the AID-Induced Hypermutation in Episomal Vector for Antibody Affinity Maturation in Mammalian Cell Display. Antibodies (Basel) 2018; 7:antib7040042. [PMID: 31544892 PMCID: PMC6698961 DOI: 10.3390/antib7040042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 12/03/2022] Open
Abstract
The induction of somatic hypermutation (SHM) in various cell lines by activation-induced cytidine deaminase (AID) has been used in protein-directed selection, especially in antibody affinity maturation. Several antibody affinity maturation systems based on mammalian cells have been developed in recent years, i.e., 293T, H1299, Raji and CHO cells. However, the efficiency of in vitro AID-induced hypermutation is low, restricting the application of such systems. In this study, we examined the role of Ig and Ek enhancers in enhancing SHM in the episomal vector pCEP4 that expresses an anti-high mobility group box 1 (HMGB1) full-length antibody. The plasmid containing the two enhancers exhibited two-fold improvement of mutation rate over pCEP4 in an AID expression H1299 cell line (H1299-AID). With the engineered episomal vector, we improved the affinity of this antibody in H1299-AID cells by 20-fold.
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17
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Li R, Wang J, Zhu F, Li R, Liu B, Xu W, He G, Cao H, Wang Y, Yang J. HMGB1 regulates T helper 2 and T helper17 cell differentiation both directly and indirectly in asthmatic mice. Mol Immunol 2018; 97:45-55. [PMID: 29567318 DOI: 10.1016/j.molimm.2018.02.014] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/12/2018] [Accepted: 02/19/2018] [Indexed: 12/15/2022]
Abstract
The Th (T helper) 2 response is characteristic of allergic asthma, and Th17 cells are involved in more severe asthma. Recent studies demonstrated that HMGB1 (High mobility group box 1 protein) regulates airway inflammation and the Th2, Th17 inflammatory response in asthma. HMGB1 can interact with Toll-like receptors (TLR) 2 and 4, and the receptor for advanced glycation end products (RAGE), activating the NF-κB (nuclear factor kappa B) signaling pathway and inducing the release of downstream inflammatory mediators. Both Th cells and dendritic cells express TLR2, TLR4, and RAGE receptors. Therefore, we speculate that HMGB1 could regulate the differentiation of Th2, Th17 cells in asthma through direct and indirect mechanisms. An ovalbumin (OVA)-induced mouse asthmatic model was established. Anti-HMGB1 antibody or rHMGB1 was administered to OVA-sensitized mice 30 min prior to each challenge. For in vitro studies, magnetically separated CD4+ naive T cells were stimulated with or without rHMGB1 and/or anti-HMGB1 antibody. BMDCs (bone marrow-derived dendritic cells)-stimulated with or without rHMGB1 and/or anti-HMGB1 antibody were cocultured with CD4+ naive T cells. Our study showed that administration of rHMGB1 aggravated airway inflammation and mucus production, and induced Th2, Th17 polarization in asthmatic mice, and that anti-HMGB1 antibody weakened characteristic features of asthma and blocked the Th2, Th17 inflammatory responses. HMGB1 could directly act on naive T cells to induce differentiation of Th2, Th17 cells in vitro through activating the TLR2, TLR4, RAGE-NF-κB signal pathway in CD4+ naive T cells. HMGB1 could also indirectly promote Th2, Th17 differentiation via activating the TLR2, TLR4, RAGE-NF-κB signal pathway in DCs to mediate their maturation and antigen-presenting ability in vitro.
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Affiliation(s)
- Ruiting Li
- Department of Respiratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Jing Wang
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Fangfang Zhu
- Department of Intensive Care Unit, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Ruifang Li
- Department of Neurology, Hubei Third People's Hospital, Wuhan, Hubei 430033, PR China
| | - Bing Liu
- Department of Respiratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Wenjuan Xu
- Department of Respiratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Guangzhen He
- Department of Respiratory Medicine, Taihe Hospital of Hubei University of Medicine, Shiyan, 442000, PR China
| | - Huan Cao
- Department of Respiratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Yimin Wang
- Department of Respiratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China
| | - Jiong Yang
- Department of Respiratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, PR China.
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18
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Chen WC, Murawsky CM. Strategies for Generating Diverse Antibody Repertoires Using Transgenic Animals Expressing Human Antibodies. Front Immunol 2018; 9:460. [PMID: 29563917 PMCID: PMC5845867 DOI: 10.3389/fimmu.2018.00460] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/21/2018] [Indexed: 01/14/2023] Open
Abstract
Therapeutic molecules derived from antibodies have become a dominant class of drugs used to treat human disease. Increasingly, therapeutic antibodies are discovered using transgenic animal systems that have been engineered to express human antibodies. While the engineering details differ, these platforms share the ability to raise an immune response that is comprised of antibodies with fully human idiotypes. Although the predominant transgenic host species has been mouse, the genomes of rats, rabbits, chickens, and cows have also been modified to express human antibodies. The creation of transgenic animal platforms expressing human antibody repertoires has revolutionized therapeutic antibody drug discovery. The observation that the immune systems of these animals are able to recognize and respond to a wide range of therapeutically relevant human targets has led to a surge in antibody-derived drugs in current development. While the clinical success of fully human monoclonal antibodies derived from transgenic animals is well established, recent trends have seen increasingly stringent functional design goals and a shift in difficulty as the industry attempts to tackle the next generation of disease-associated targets. These challenges have been met with a number of novel approaches focused on the generation of large, high-quality, and diverse antibody repertoires. In this perspective, we describe some of the strategies and considerations we use for manipulating the immune systems of transgenic animal platforms (such as XenoMouse®) with a focus on maximizing the diversity of the primary response and steering the ensuing antibody repertoire toward a desired outcome.
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Affiliation(s)
- Weihsu C Chen
- Biologics Discovery, Department of Therapeutic Discovery, Amgen British Columbia Inc., Burnaby, BC, Canada
| | - Christopher M Murawsky
- Biologics Discovery, Department of Therapeutic Discovery, Amgen British Columbia Inc., Burnaby, BC, Canada
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19
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Rydahl MG, Krac Un SK, Fangel JU, Michel G, Guillouzo A, Génicot S, Mravec J, Harholt J, Wilkens C, Motawia MS, Svensson B, Tranquet O, Ralet MC, Jørgensen B, Domozych DS, Willats WGT. Development of novel monoclonal antibodies against starch and ulvan - implications for antibody production against polysaccharides with limited immunogenicity. Sci Rep 2017; 7:9326. [PMID: 28839196 PMCID: PMC5570955 DOI: 10.1038/s41598-017-04307-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 05/12/2017] [Indexed: 02/06/2023] Open
Abstract
Monoclonal antibodies (mAbs) are widely used and powerful research tools, but the generation of mAbs against glycan epitopes is generally more problematic than against proteins. This is especially significant for research on polysaccharide-rich land plants and algae (Viridiplantae). Most antibody production is based on using single antigens, however, there are significant gaps in the current repertoire of mAbs against some glycan targets with low immunogenicity. We approached mAb production in a different way and immunised with a complex mixture of polysaccharides. The multiplexed screening capability of carbohydrate microarrays was then exploited to deconvolute the specificities of individual mAbs. Using this strategy, we generated a set of novel mAbs, including one against starch (INCh1) and one against ulvan (INCh2). These polysaccharides are important storage and structural polymers respectively, but both are generally considered as having limited immunogenicity. INCh1 and INCh2 therefore represent important new molecular probes for Viridiplantae research. Moreover, since the α-(1-4)-glucan epitope recognised by INCh1 is also a component of glycogen, this mAb can also be used in mammalian systems. We describe the detailed characterisation of INCh1 and INCh2, and discuss the potential of a non-directed mass-screening approach for mAb production against some glycan targets.
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Affiliation(s)
- Maja G Rydahl
- Department of Plant and Environmental Sciences, DK-1871, Frederiksberg, Denmark.
| | - Stjepan K Krac Un
- Department of Plant and Environmental Sciences, DK-1871, Frederiksberg, Denmark
| | - Jonatan U Fangel
- Carlsberg Research Laboratory, J.C. Jacobsens Gade 4, DK-1799, Copenhagen V, Denmark
| | - Gurvan Michel
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, Roscoff, Bretagne, France
| | - Alexia Guillouzo
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, Roscoff, Bretagne, France
| | - Sabine Génicot
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, Roscoff, Bretagne, France
| | - Jozef Mravec
- Department of Plant and Environmental Sciences, DK-1871, Frederiksberg, Denmark
| | - Jesper Harholt
- Carlsberg Research Laboratory, J.C. Jacobsens Gade 4, DK-1799, Copenhagen V, Denmark
| | - Casper Wilkens
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | | | - Birte Svensson
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Lyngby, Denmark
| | - Olivier Tranquet
- UR1268 Biopolymeres, Interactions et Assemblages, Institut National de la Recherche Agronomique, Rue de la Géraudière, BP 71627, F-44316, Nantes, France
| | - Marie-Christine Ralet
- UR1268 Biopolymeres, Interactions et Assemblages, Institut National de la Recherche Agronomique, Rue de la Géraudière, BP 71627, F-44316, Nantes, France
| | - Bodil Jørgensen
- Department of Plant and Environmental Sciences, DK-1871, Frederiksberg, Denmark
| | - David S Domozych
- Biology Department, Skidmore College, Saratoga Springs, NY, 12866, USA
| | - William G T Willats
- School of Agriculture, Food and Rural Development, Newcastle University, NE1 7RU, Newcastle upon Tyne, UK.
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20
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Patnaik A, Swanson KD, Csizmadia E, Solanki A, Landon-Brace N, Gehring MP, Helenius K, Olson BM, Pyzer AR, Wang LC, Elemento O, Novak J, Thornley TB, Asara JM, Montaser L, Timmons JJ, Morgan TM, Wang Y, Levantini E, Clohessy JG, Kelly K, Pandolfi PP, Rosenblatt JM, Avigan DE, Ye H, Karp JM, Signoretti S, Balk SP, Cantley LC. Cabozantinib Eradicates Advanced Murine Prostate Cancer by Activating Antitumor Innate Immunity. Cancer Discov 2017; 7:750-765. [PMID: 28274958 PMCID: PMC5501767 DOI: 10.1158/2159-8290.cd-16-0778] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/07/2016] [Accepted: 03/06/2017] [Indexed: 12/22/2022]
Abstract
Several kinase inhibitors that target aberrant signaling pathways in tumor cells have been deployed in cancer therapy. However, their impact on the tumor immune microenvironment remains poorly understood. The tyrosine kinase inhibitor cabozantinib showed striking responses in cancer clinical trial patients across several malignancies. Here, we show that cabozantinib rapidly eradicates invasive, poorly differentiated PTEN/p53-deficient murine prostate cancer. This was associated with enhanced release of neutrophil chemotactic factors from tumor cells, including CXCL12 and HMGB1, resulting in robust infiltration of neutrophils into the tumor. Critically, cabozantinib-induced tumor clearance in mice was abolished by antibody-mediated granulocyte depletion or HMGB1 neutralization or blockade of neutrophil chemotaxis with the CXCR4 inhibitor plerixafor. Collectively, these data demonstrate that cabozantinib triggers a neutrophil-mediated anticancer innate immune response, resulting in tumor clearance.Significance: This study is the first to demonstrate that a tyrosine kinase inhibitor can activate neutrophil-mediated antitumor innate immunity, resulting in invasive cancer clearance. Cancer Discov; 7(7); 750-65. ©2017 AACR.This article is highlighted in the In This Issue feature, p. 653.
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Affiliation(s)
- Akash Patnaik
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, Massachusetts.
- Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Section of Hematology/Oncology, Department of Medicine, The University of Chicago, Chicago, Illinois
- The University of Chicago Comprehensive Cancer Center, Chicago, Illinois
| | - Kenneth D Swanson
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Eva Csizmadia
- Division of Gastroenterology, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | - Aniruddh Solanki
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Harvard Stem Cell Institute, Boston, Massachusetts
| | - Natalie Landon-Brace
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Harvard Stem Cell Institute, Boston, Massachusetts
| | - Marina P Gehring
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Laboratório de Farmacologia Aplicada, PUCRS, Porto Alegre, Brazil
| | - Katja Helenius
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Brian M Olson
- Section of Hematology/Oncology, Department of Medicine, The University of Chicago, Chicago, Illinois
- The University of Chicago Comprehensive Cancer Center, Chicago, Illinois
| | - Athalia R Pyzer
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, Massachusetts
| | - Lily C Wang
- Meyer Cancer Center, Weill Cornell Medical College, New York, New York
| | - Olivier Elemento
- Meyer Cancer Center, Weill Cornell Medical College, New York, New York
| | - Jesse Novak
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Thomas B Thornley
- Transplant Institute and Immunology Program, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - John M Asara
- Division of Signal Transduction, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Laleh Montaser
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Joshua J Timmons
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Todd M Morgan
- Department of Urology, University of Michigan, Ann Arbor, Michigan
| | - Yugang Wang
- Department of Urology, University of Michigan, Ann Arbor, Michigan
| | - Elena Levantini
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, Massachusetts
- Harvard Stem Cell Institute, Boston, Massachusetts
- Institute of Biomedical Technologies, National Research Council (CNR), Pisa, Italy
| | - John G Clohessy
- Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
- Preclinical Murine Pharmacogenetics Facility, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Kathleen Kelly
- Laboratory of Genitourinary Cancer Pathogenesis, National Cancer Institute, Bethesda, Maryland
| | - Pier Paolo Pandolfi
- Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Jacalyn M Rosenblatt
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, Massachusetts
- Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - David E Avigan
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, Massachusetts
- Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Huihui Ye
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Jeffrey M Karp
- Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
- Harvard Stem Cell Institute, Boston, Massachusetts
| | - Sabina Signoretti
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Steven P Balk
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Dana Farber/Harvard Cancer Center, Harvard Medical School, Boston, Massachusetts
- Beth Israel Deaconess Cancer Center, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
| | - Lewis C Cantley
- Meyer Cancer Center, Weill Cornell Medical College, New York, New York
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Abstract
Phage display is commonly used to identify and isolate binders from large combinatorial libraries. Here we present phage selection protocols enabling generation of synthetic antibodies capable of recognizing multiprotein complexes and conformational states. The procedure describes stages of the experiment design, optimization, and screening, as well as provides the framework for building downstream assays with an end goal of isolating bioactive antibodies for future therapeutic use. The methods described are also applicable to screening directly on cells and can be ported to other in vitro directed evolution systems utilizing non-immunoglobulin scaffolds.
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22
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Ming B, Gao M, Zou H, Chen H, Sun Y, Xiao Y, Lai L, Xiong P, Xu Y, Tan Z, Wang J, Chen G, Gong F, Xia J, Zheng F. HMGB1 blockade differentially impacts pulmonary inflammation and defense responses in poly(I:C)/LPS-exposed heart transplant mice. Mol Immunol 2016; 76:80-9. [PMID: 27387278 DOI: 10.1016/j.molimm.2016.06.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/09/2016] [Accepted: 06/17/2016] [Indexed: 01/05/2023]
Abstract
A large number of recipients are in a compromised immune defense condition because of the routine application of immunosuppressive regimens after heart transplantation. Our previous work demonstrated that blockade of high-mobility group box 1 (HMGB1) prolongs the graft survival. Whether and how HMGB1 blockade impacts respiratory responses against pathogen-like challenge in organ transplant recipients when it improves cardiac graft are not elucidated. At the present study, after abdominal heterotopic heart transplantation, the recipient mice were treated with HMGB1 mAb, and then challenged with poly(I:C) or LPS intratracheally on day 7 post transplantation. We found that the level of bronchoalveolar lavage (BAL) HMGB1 was elevated after heart transplantation, and aggravated responses to respiratory tract poly(I:C)/LPS challenge were observed. HMGB1 neutralizing mAb treatment in poly(I:C)-challenged recipient mice alleviated pulmonary histopathological changes, neutrophil infiltration and inflammatory cytokine release, but unaffected the level of IFN-β, the distribution of CD11b(+)CD27(+)/CD11b(+)CD27(-) NK cell subsets, and CD8(+) T cell responses. In LPS-exposed recipient mice, HMGB1 mAb treatment ameliorated pulmonary inflammatory damage and enhanced the phagocytosis of phagocytic cells. Thus, this study may establish a basis for the application of HMGB1 blockade to improve the outcomes of heart transplant recipients because HMGB1 inhibition ameliorates pulmonary inflammation, but maintains defense-associated responses.
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Affiliation(s)
- Bingxia Ming
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ming Gao
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huijuan Zou
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Huoying Chen
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yan Sun
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yifan Xiao
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lin Lai
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Xiong
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yong Xu
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zheng Tan
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Wang
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gang Chen
- Institute of Organ Transplantation, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, China; Key Laboratory of Organ Transplantation, Ministry of Public Health, China
| | - Feili Gong
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, China; Key Laboratory of Organ Transplantation, Ministry of Public Health, China
| | - Jiahong Xia
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiovascular Surgery, Central Hospital of Wuhan, Wuhan, China
| | - Fang Zheng
- Department of immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, China; Key Laboratory of Organ Transplantation, Ministry of Public Health, China.
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23
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Percival-Alwyn JL, England E, Kemp B, Rapley L, Davis NHE, McCarthy GR, Majithiya JB, Corkill DJ, Welsted S, Minton K, Cohen ES, Robinson MJ, Dobson C, Wilkinson TCI, Vaughan TJ, Groves MAT, Tigue NJ. Generation of potent mouse monoclonal antibodies to self-proteins using T-cell epitope "tags". MAbs 2015; 7:129-37. [PMID: 25523454 PMCID: PMC4622073 DOI: 10.4161/19420862.2014.985489] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 09/29/2014] [Accepted: 11/03/2014] [Indexed: 12/11/2022] Open
Abstract
Immunization of mice or rats with a "non-self" protein is a commonly used method to obtain monoclonal antibodies, and relies on the immune system's ability to recognize the immunogen as foreign. Immunization of an antigen with 100% identity to the endogenous protein, however, will not elicit a robust immune response. To develop antibodies to mouse proteins, we focused on the potential for breaking such immune tolerance by genetically fusing two independent T-cell epitope-containing sequences (from tetanus toxin (TT) and diphtheria toxin fragment A (DTA)) to a mouse protein, mouse ST2 (mST2). Wild-type CD1 mice were immunized with three mST2 tagged proteins (Fc, TT and DTA) and the specific serum response was determined. Only in mice immunized with the T-cell epitope-containing antigens were specific mST2 serum responses detected; hybridomas generated from these mice secreted highly sequence-diverse IgGs that were capable of binding mST2 and inhibiting the interaction of mST2 with its ligand, mouse interleukin (IL)-33 (mIL-33). Of the hundreds of antibodies profiled, we identified five potent antibodies that were able to inhibit IL-33 induced IL-6 release in a mast cell assay; notably one such antibody was sufficiently potent to suppress IL-5 release and eosinophilia infiltration in an Alternaria alternata challenge mouse model of asthma. This study demonstrated, for the first time, that T-cell epitope-containing tags have the ability to break tolerance in wild-type mice to 100% conserved proteins, and it provides a compelling argument for the broader use of this approach to generate antibodies against any mouse protein or conserved ortholog.
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Key Words
- APC, antigen presenting cells
- Antibody generation
- CDR, complementarity determining region
- CHO, Chinese hamster ovary
- DMEM, dulbecco's modified eagles' medium
- DTA, diphtheria toxin
- ELISA, enzyme-linked immunosorbent assay
- HLA, human leukocyte antigen
- HTRF, homogenous time-resolved fluorescence
- IL, interleukin
- ILC2, type 2 innate lymphoid cells
- IgG, immunoglobulin G
- MHC, major histocompatibility complex
- PADRE, pan HLA-DR-binding T cell epitope
- SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel
- SLE, systemic lupus erythematosus
- T-cell epitopes
- TCR, T cell receptor
- TT, tetanus tosxin
- VH, variable region of immunoglobulin heavy chain
- VL, variable region of immunoglobulin light chain
- diphtheria toxin
- hybridoma
- immunological tolerance
- mST2, mouse ST2
- mouse ST2
- tetanus toxin
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MESH Headings
- Animals
- Antibodies, Monoclonal, Murine-Derived/immunology
- Antibodies, Monoclonal, Murine-Derived/pharmacology
- Antibody Specificity
- Asthma/drug therapy
- Asthma/immunology
- Asthma/pathology
- Cell Line, Transformed
- Diphtheria Toxin/chemistry
- Diphtheria Toxin/immunology
- Epitopes, T-Lymphocyte/chemistry
- Epitopes, T-Lymphocyte/immunology
- Female
- Humans
- Interleukin-1 Receptor-Like 1 Protein
- Mice
- Mice, Inbred BALB C
- Rats
- Receptors, Interleukin/chemistry
- Receptors, Interleukin/immunology
- Tetanus Toxin/chemistry
- Tetanus Toxin/immunology
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Affiliation(s)
| | - Elizabeth England
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - Benjamin Kemp
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - Laura Rapley
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Nicola HE Davis
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Grant R McCarthy
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Jayesh B Majithiya
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Dominic J Corkill
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Sarah Welsted
- Department of Biological Sciences; MedImmune Ltd.; Abington, UK
| | - Kevin Minton
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - E Suzanne Cohen
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Matthew J Robinson
- Department of Respiratory, Inflammation and Autoimmunity; MedImmune Ltd.; Abington, UK
| | - Claire Dobson
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - Trevor CI Wilkinson
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - Tristan J Vaughan
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - Maria AT Groves
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
| | - Natalie J Tigue
- Department of Antibody Discovery and Protein Engineering; MedImmune Ltd.; Abington, UK
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24
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Zou H, Yang Y, Gao M, Zhang B, Ming B, Sun Y, Chen H, Tang X, Chen Z, Xiong P, Xu Y, Fang M, Tan Z, Gong F, Zheng F. HMGB1 is involved in chronic rejection of cardiac allograft via promoting inflammatory-like mDCs. Am J Transplant 2014; 14:1765-77. [PMID: 24984831 DOI: 10.1111/ajt.12781] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 04/04/2014] [Accepted: 04/06/2014] [Indexed: 01/25/2023]
Abstract
Chronic rejection that leads to diffuse narrowing and occlusion of graft vessels is the most important cause of morbidity and mortality following cardiac transplantation. The role and underlying mechanism of high-mobility group box 1 (HMGB1), as an established inflammatory mediator in acute rejection, remains poorly understood in chronic rejection. Here, we assessed the effects and mechanisms of HMGB1 on the chronic rejection using single MHC Class II-mismatched mouse cardiac transplantation model. It was found that HMGB1 was increased accompanying with the development of chronic rejection, while blockade of HMGB1 with specific neutralizing mAb substantially ameliorated chronic rejection-mediated vasculopathy and fibrosis of allograft, as well as markedly decreased T cell infiltration and production of IL-17A and interferon-gamma in allograft and recipient's spleen. Further, anti-HMGB1 antibody treatment significantly declined the number and frequency of mature dendritic cells (DCs) in allograft and recipient's spleen, especially CD11b(+) Ly6C(high) matured DCs that share the phenotypes with inflammatory-DCs. These findings indicate that HMGB1 contributes to chronic rejection, and HMGB1 blockade may be a novel mean to disrupt the proinflammatory loop after heart transplantation.
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Affiliation(s)
- H Zou
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Key Laboratory of Organ Transplantation, Ministry of Education, China; Key Laboratory of Organ Transplantation, Ministry of Public Health, China
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25
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Abstract
In order to comprehensively manipulate the human proteome we require a vast repertoire of pharmacological reagents. To address these needs we have developed repertoires of synthetic antibodies by phage display, where diversified oligonucleotides are used to modify the complementarity-determining regions (CDRs) of a human antigen-binding fragment (Fab) scaffold. As diversity is produced outside the confines of the mammalian immune system, synthetic antibody libraries allow us to bypass several limitations of hybridoma technology while improving the experimental parameters under which pharmacological reagents are produced. Here we describe the methodologies used to produce synthetic antibody libraries from a single human framework with diversity restricted to four CDRs. These synthetic repertoires can be extremely functional as they produce highly selective, high affinity Fabs to the majority of soluble human antigens. Finally we describe selection methodologies that allow us to overcome immuno-dominance in our selections to target a variety of epitopes per antigen. Together these methodologies allow us to produce human monoclonal antibodies to manipulate the human proteome.
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Affiliation(s)
- Jarrett J Adams
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
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26
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Wang W, Sun L, Deng Y, Tang J. Synergistic effects of antibodies against high-mobility group box 1 and tumor necrosis factor-α antibodies on D-(+)-galactosamine hydrochloride/lipopolysaccharide-induced acute liver failure. FEBS J 2013; 280:1409-19. [PMID: 23331758 DOI: 10.1111/febs.12132] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Revised: 12/19/2012] [Accepted: 01/14/2013] [Indexed: 12/18/2022]
Abstract
High-mobility group box 1 (HMGB1) protein is released into the serum after tissue damage, and serves as a warning signal to enhance the inflammatory response. Acute liver injury is one of the diseases that starts with tissue damage and ends with systemic inflammation. We used D-(+)-galactosamine hydrochloride (D-GalN)/lipopolysaccharide (LPS)-treated mice as an acute liver injury model to explore the functions of HMGB1 in more detail. HMGB1 is released into the serum at a very early stage of D-GalN/LPS-induced acute liver injury. It upregulates the expression of tumor necrosis factor-α (TNF-α), interleukin-6, inducible nitric oxide synthase, and tissue factor. TNF-α and HMGB1 form a positive feedback loop to amplify the downstream signals. mAbs against HMGB1 and TNF-α have synergistic effects in protecting mice from D-GalN/LPS-induced acute liver failure. The results suggest that HMGB1 is a key mediator in D-GalN/LPS-induced acute liver injury. Tissue damage and cell necrosis shortly after administration of D-GalN and LPS lead to early HMGB1 release, and HMGB1 acts synergistically with TNF-α to promote pathological processes in acute liver failure.
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Affiliation(s)
- Wei Wang
- Center for Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
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27
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Suppression of breast tumor growth by DNA vaccination against phosphatase of regenerating liver 3. Gene Ther 2013; 20:834-45. [PMID: 23364316 DOI: 10.1038/gt.2013.5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 11/14/2012] [Accepted: 12/31/2012] [Indexed: 12/18/2022]
Abstract
Phosphatase of regenerating liver (PRL)-3 is highly expressed in multiple cancers and has important roles in cancer development. Some small-molecule inhibitors and antibodies targeting PRL-3 have been recently reported to inhibit tumor growth effectively. To determine whether PRL-3-targeted DNA vaccination can induce immune response to prevent or inhibit the tumor growth, we established mouse D2F2 breast cancer cells expressing PRL-3 (D2F2/PRL-3) and control cells (D2F2/NC) with lentivirus, and constructed pVAX1-Igκ-PRL-3 plasmid (named as K-P3) as DNA vaccine to immunize BALB/c mice. We found that the K-P3 vaccine delivered by gene gun significantly prevented the growth of D2F2/PRL-3 compared with pVAX1-vector (P<0.01), but not of D2F2/NC, and improved the survival of D2F2/PRL-3-innoculated mice. Both PRL-3-targeted cytotoxic T lymphocytes (CTLs) and T-helper type 1 cell immune response (production of high levels of interferon-γ and tumor necrosis factor-α) were found to be involved in the preventive effect. Furthermore, PRL-3-targeted DNA immunization inhibited tumor growth of D2F2/PRL-3 cells in mice. We also evaluated the potential of immunization with PRL-3 protein, but no significant therapeutic or preventive effect was obtained on tumor growth. To enhance the immunity of PRL-3, we incorporated different molecular adjuvants, such as Mycobacterium tuberculosis heat-shock protein, CTL antigen 4 and M. tuberculosis T-cell stimulatory epitope (MT), into K-P3 vaccine for expressing the fusion proteins. We found that these adjuvant molecules did not significantly improve the antitumor activity of PRL-3 vaccine, but enhanced the production of PRL-3 antibodies in immunized mice. Summarily, our findings demonstrate that PRL-3-targeted DNA vaccine can generate significantly preventive and therapeutic effects on the growth of breast cancer expressing PRL-3 through the induction of cellular immune responses to PRL-3.
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Bauer M, Chicca A, Tamborrini M, Eisen D, Lerner R, Lutz B, Poetz O, Pluschke G, Gertsch J. Identification and quantification of a new family of peptide endocannabinoids (Pepcans) showing negative allosteric modulation at CB1 receptors. J Biol Chem 2012; 287:36944-67. [PMID: 22952224 PMCID: PMC3481297 DOI: 10.1074/jbc.m112.382481] [Citation(s) in RCA: 127] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 08/23/2012] [Indexed: 11/06/2022] Open
Abstract
The α-hemoglobin-derived dodecapeptide RVD-hemopressin (RVDPVNFKLLSH) has been proposed to be an endogenous agonist for the cannabinoid receptor type 1 (CB(1)). To study this peptide, we have raised mAbs against its C-terminal part. Using an immunoaffinity mass spectrometry approach, a whole family of N-terminally extended peptides in addition to RVD-Hpα were identified in rodent brain extracts and human and mouse plasma. We designated these peptides Pepcan-12 (RVDPVNFKLLSH) to Pepcan-23 (SALSDLHAHKLRVDPVNFKLLSH), referring to peptide length. The most abundant Pepcans found in the brain were tested for CB(1) receptor binding. In the classical radioligand displacement assay, Pepcan-12 was the most efficacious ligand but only partially displaced both [(3)H]CP55,940 and [(3)H]WIN55,212-2. The data were fitted with the allosteric ternary complex model, revealing a cooperativity factor value α < 1, thus indicating a negative allosteric modulation. Dissociation kinetic studies of [(3)H]CP55,940 in the absence and presence of Pepcan-12 confirmed these results by showing increased dissociation rate constants induced by Pepcan-12. A fluorescently labeled Pepcan-12 analog was synthesized to investigate the binding to CB(1) receptors. Competition binding studies revealed K(i) values of several Pepcans in the nanomolar range. Accordingly, using competitive ELISA, we found low nanomolar concentrations of Pepcans in human plasma and ∼100 pmol/g in mouse brain. Surprisingly, Pepcan-12 exhibited potent negative allosteric modulation of the orthosteric agonist-induced cAMP accumulation, [(35)S]GTPγS binding, and CB(1) receptor internalization. Pepcans are the first endogenous allosteric modulators identified for CB(1) receptors. Given their abundance in the brain, Pepcans could play an important physiological role in modulating endocannabinoid signaling.
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MESH Headings
- Allosteric Regulation
- Amino Acid Sequence
- Animals
- Antibodies, Monoclonal, Murine-Derived/biosynthesis
- Binding, Competitive
- Brain/metabolism
- CHO Cells
- Cannabinoid Receptor Modulators/blood
- Cannabinoid Receptor Modulators/chemical synthesis
- Cannabinoid Receptor Modulators/immunology
- Cannabinoid Receptor Modulators/metabolism
- Cricetinae
- Cyclohexanols/metabolism
- Epitope Mapping
- Female
- HL-60 Cells
- Hemoglobins/biosynthesis
- Hemoglobins/chemical synthesis
- Hemoglobins/chemistry
- Hemoglobins/immunology
- Hemoglobins/metabolism
- Humans
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred NZB
- Molecular Sequence Data
- Peptide Fragments/biosynthesis
- Peptide Fragments/blood
- Peptide Fragments/chemical synthesis
- Peptide Fragments/immunology
- Peptide Fragments/metabolism
- Protein Binding
- Protein Transport
- Rats
- Receptor, Cannabinoid, CB1/agonists
- Receptor, Cannabinoid, CB1/antagonists & inhibitors
- Receptor, Cannabinoid, CB1/metabolism
- Signal Transduction
- Sus scrofa
- Tandem Mass Spectrometry
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Affiliation(s)
- Mark Bauer
- From the Institute of Biochemistry and Molecular Medicine, National Center of Competence in Research TransCure, University of Bern, CH 3012 Bern, Switzerland
- the Swiss Tropical and Public Health Institute, Socinstrasse 57, CH 4002 Basel, Switzerland, the University of Basel, Petersplatz 1, CH 4003 Basel, Switzerland
| | - Andrea Chicca
- From the Institute of Biochemistry and Molecular Medicine, National Center of Competence in Research TransCure, University of Bern, CH 3012 Bern, Switzerland
| | - Marco Tamborrini
- the Swiss Tropical and Public Health Institute, Socinstrasse 57, CH 4002 Basel, Switzerland, the University of Basel, Petersplatz 1, CH 4003 Basel, Switzerland
| | - David Eisen
- the Natural and Medical Sciences Institute at the University of Tuebingen, 72770 Reutlingen, Germany, and
| | - Raissa Lerner
- the Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Beat Lutz
- the Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - Oliver Poetz
- the Natural and Medical Sciences Institute at the University of Tuebingen, 72770 Reutlingen, Germany, and
| | - Gerd Pluschke
- the Swiss Tropical and Public Health Institute, Socinstrasse 57, CH 4002 Basel, Switzerland, the University of Basel, Petersplatz 1, CH 4003 Basel, Switzerland
| | - Jürg Gertsch
- From the Institute of Biochemistry and Molecular Medicine, National Center of Competence in Research TransCure, University of Bern, CH 3012 Bern, Switzerland
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Gu X, Vedvyas Y, Chen X, Kaushik T, Hwang CI, Hu X, Nikitin AY, Jin MM. Novel strategy for selection of monoclonal antibodies against highly conserved antigens: phage library panning against ephrin-B2 displayed on yeast. PLoS One 2012; 7:e30680. [PMID: 22292016 PMCID: PMC3264634 DOI: 10.1371/journal.pone.0030680] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Accepted: 12/21/2011] [Indexed: 12/03/2022] Open
Abstract
Ephrin-B2 is predominately expressed in endothelium of arterial origin, involved in developmental angiogenesis and neovasculature formation through its interaction with EphB4. Despite its importance in physiology and pathological conditions, it has been challenging to produce monoclonal antibodies against ephrin-B2 due to its high conservation in sequence throughout human and rodents. Using a novel approach for antibody selection by panning a phage library of human antibody against antigens displayed in yeast, we have isolated high affinity antibodies against ephrin-B2. The function of one high affinity binder (named as ‘EC8’) was manifested in its ability to inhibit ephrin-B2 interaction with EphB4, to cross-react with murine ephrin-B2, and to induce internalization into ephrin-B2 expressing cells. EC8 was also compatible with immunoprecipitation and detection of ephrin-B2 expression in the tissue after standard chemical fixation procedure. Consistent with previous reports on ephrin-B2 induction in some epithelial tumors and tumor-associated vasculatures, EC8 specifically detected ephrin-B2 in tumors as well as the vasculature within and outside of the tumors. We envision that monoclonal antibody developed in this study may be used as a reagent to probe ephrin-B2 distribution in normal as well as in pathological conditions and to antagonize ephrin-B2 interaction with EphB4 for basic science and therapeutic applications.
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Affiliation(s)
- Xiaoling Gu
- Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Yogindra Vedvyas
- Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Xiaoyue Chen
- Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Tanwi Kaushik
- Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Chang-Il Hwang
- Department of Biomedical Sciences, Cornell University, Ithaca, New York, United States of America
| | - Xuebo Hu
- Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
| | - Alexander Y. Nikitin
- Department of Biomedical Sciences, Cornell University, Ithaca, New York, United States of America
| | - Moonsoo M. Jin
- Department of Biomedical Engineering, Cornell University, Ithaca, New York, United States of America
- * E-mail:
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30
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Gene Silencing of NALP3 Protects Against Liver Ischemia–Reperfusion Injury in Mice. Hum Gene Ther 2011; 22:853-64. [DOI: 10.1089/hum.2010.145] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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31
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Zhang Y, Zeng X, Chen S, Zhang Z, Li P, Yi W, Huang H, Yao J, Li S, Hu C. Characterization, epitope identification and mechanisms of the anti-septic capacity of monoclonal antibodies against macrophage migration inhibitory factor. Int Immunopharmacol 2011; 11:1333-40. [PMID: 21571101 DOI: 10.1016/j.intimp.2011.04.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 04/21/2011] [Accepted: 04/25/2011] [Indexed: 12/08/2022]
Abstract
Sepsis is characterized by uncontrolled inflammatory responses. Macrophage migration inhibitory factor (MIF) has been shown to play an important role in the progression of sepsis thus is a potential therapeutic target. The aim of this study is to produce IgG anti-MIF monoclonal antibodies (mAbs) with anti-septic abilities in vivo and to determine mechanisms of their function. We generated 8 IgG anti-MIF mAbs with high specificity and 3 of them showed potent protective abilities in murine lethal peritonitis induced by cecal ligation and puncture (CLP). One anti-MIF mAb, F11, showed 100% protection within 72 h after sepsis induction and 72% mice treated with this mAb survived up to 84 h with reduced lung and kidney pathology. F11 treatment also reduced tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) levels in septic mice. We further found that all 8 anti-MIF mAbs recognized the same epitope located in the amino acid residue 1-20 region of the N terminus of the MIF protein. Three of the mAbs, F11 in particular, inhibited tautomerase activity in association with their protective effect on CLP mice. Thus, we have produced anti-MIF mAbs that protected mice from CLP-induced sepsis by recognizing the same epitope domains in MIF. These mAbs are promising candidates for further development of therapeutics against inflammatory diseases.
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Affiliation(s)
- Yang Zhang
- Department of Clinical Biochemistry, Laboratory Sciences, the Third Military Medical University, Chongqing, Gaotanyan Street 30, Shapingba District, Chongqing 400038, PR China
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Chen C, Liu Y, Liu Y, Zheng P. Mammalian target of rapamycin activation underlies HSC defects in autoimmune disease and inflammation in mice. J Clin Invest 2010; 120:4091-101. [PMID: 20972332 DOI: 10.1172/jci43873] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Accepted: 08/25/2010] [Indexed: 12/15/2022] Open
Abstract
The mammalian target of rapamycin (mTOR) is a signaling molecule that senses environmental cues, such as nutrient status and oxygen supply, to regulate cell growth, proliferation, and other functions. Unchecked, sustained mTOR activity results in defects in HSC function. Inflammatory conditions, such as autoimmune disease, are often associated with defective hematopoiesis. Here, we investigated whether hyperactivation of mTOR in HSCs contributes to hematopoietic defects in autoimmunity and inflammation. We found that in mice deficient in Foxp3 (scurfy mice), a model of autoimmunity, the development of autoimmune disease correlated with progressive bone marrow loss and impaired regenerative capacity of HSCs in competitive bone marrow transplantation. Similarly, LPS-mediated inflammation in C57BL/6 mice led to massive bone marrow cell death and impaired HSC function. Importantly, treatment with rapamycin in both models corrected bone marrow hypocellularity and partially restored hematopoietic activity. In cultured mouse bone marrow cells, treatment with either of the inflammatory cytokines IL-6 or TNF-α was sufficient to activate mTOR, while preventing mTOR activation in vivo required simultaneous inhibition of CCL2, IL-6, and TNF-α. These data strongly suggest that mTOR activation in HSCs by inflammatory cytokines underlies defective hematopoiesis in autoimmune disease and inflammation.
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Affiliation(s)
- Chong Chen
- Division of Immunotherapy, Department of Surgery, University of Michigan, School of Medicine and Comprehensive Cancer Center, Ann Arbor, Michigan, USA
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CD24-Siglec G/10 discriminates danger- from pathogen-associated molecular patterns. Trends Immunol 2009; 30:557-61. [PMID: 19786366 DOI: 10.1016/j.it.2009.09.006] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Revised: 09/11/2009] [Accepted: 09/14/2009] [Indexed: 12/14/2022]
Abstract
It is now well accepted that the innate immune system recognizes both damage (or danger)- and pathogen-associated molecular patterns (DAMP and PAMP, respectively) through pattern recognition receptors, such as Toll-like receptors (TLR) and/or Nod-like receptors (NLR). Less clear are whether and how the response to PAMP and DAMP are regulated differentially. The answers may reveal whether the primary goal of the immune system is to defend against infections or to alert the host of tissue injuries. We demonstrated recently that the host response to DAMP is controlled by a DAMP-CD24-Siglec axis. Here we propose a key role for the CD24-Siglec pathway in discriminating between DAMPs and PAMPs.
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