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Jacquet A, Soh WT. Spatiotemporal proteolytic susceptibility of allergens: positive or negative effects on the allergic sensitization? FRONTIERS IN ALLERGY 2024; 5:1426816. [PMID: 39044859 PMCID: PMC11263110 DOI: 10.3389/falgy.2024.1426816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 06/21/2024] [Indexed: 07/25/2024] Open
Abstract
From their expression in their respective allergenic source to their processing by antigen presenting cells, allergens continuously encounter proteases. The ability of allergens to resist to proteolysis by digestive enzymes or host-cell/microbial proteases is considered as an important property that influences their allergenic potential. However, the relationship between proteolytic stability and allergenicity is much more complex and depends on various factors, such as the protein structure dynamics, the exposure level, the route of sensitization, and their respective protease susceptibility. In this review, we summarize and discuss the current knowledge on several aspects of allergen proteolytic stability in different environments including the allergenic sources, routes of sensitization (skin, respiratory tract, gastrointestinal tract) and endolysosomal compartment of antigen-presenting cells. Proteolytic stability alone cannot represent a definitive criterion to allergenicity. The proteolytic susceptibility of allergens in processed extracts can affect allergy diagnosis and immunotherapy. Furthermore, the fine tuning of allergen stability during antigen processing can be exploited for the development of novel immunotherapeutic strategies.
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Affiliation(s)
- Alain Jacquet
- Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Wai Tuck Soh
- Research Group of Quantitative and Systems Biology, Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany
- Faculty of Applied Sciences, UCSI University, Kuala Lumpur, Malaysia
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2
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Stoyanova E, Mihaylova N, Ralchev N, Bradyanova S, Manoylov I, Raynova Y, Idakieva K, Tchorbanov A. Immunotherapeutic Potential of Mollusk Hemocyanins in Murine Model of Melanoma. Mar Drugs 2024; 22:220. [PMID: 38786612 PMCID: PMC11122751 DOI: 10.3390/md22050220] [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: 03/20/2024] [Revised: 05/08/2024] [Accepted: 05/13/2024] [Indexed: 05/25/2024] Open
Abstract
The development of antitumor drugs and therapy requires new approaches and molecules, and products of natural origin provide intriguing alternatives for antitumor research. Gastropodan hemocyanins-multimeric copper-containing glycoproteins have been used in therapeutic vaccines and antitumor agents in many cancer models. MATERIALS AND METHODS We established a murine model of melanoma by challenging C57BL/6 mice with a B16F10 cell line for solid tumor formation in experimental animals. The anticancer properties of hemocyanins isolated from the marine snail Rapana thomasiana (RtH) and the terrestrial snail Helix aspersa (HaH) were evaluated in this melanoma model using various schemes of therapy. Flow cytometry, ELISA, proliferation, and cytotoxicity assays, as well as histology investigations, were also performed. RESULTS Beneficial effects on tumor growth, tumor incidence, and survival of tumor-bearing C57BL/6 mice after administration of the RtH or HaH were observed. The generation of high titers of melanoma-specific IgM antibodies, pro-inflammatory cytokines, and tumor-specific CTLs, and high levels of tumor-infiltrated M1 macrophages enhanced the immune reaction and tumor suppression. DISCUSSION Both RtH and HaH exhibited promising properties for applications as antitumor therapeutic agents and future experiments with humans.
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Affiliation(s)
- Emiliya Stoyanova
- Department of Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 26, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (S.B.); (I.M.)
| | - Nikolina Mihaylova
- Department of Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 26, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (S.B.); (I.M.)
| | - Nikola Ralchev
- Department of Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 26, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (S.B.); (I.M.)
| | - Silviya Bradyanova
- Department of Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 26, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (S.B.); (I.M.)
| | - Iliyan Manoylov
- Department of Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 26, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (S.B.); (I.M.)
| | - Yuliana Raynova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (Y.R.); (K.I.)
| | - Krassimira Idakieva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (Y.R.); (K.I.)
| | - Andrey Tchorbanov
- Department of Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Street, Block 26, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (S.B.); (I.M.)
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3
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Kruczkowska W, Kciuk M, Pasieka Z, Kłosiński K, Płuciennik E, Elmer J, Waszczykowska K, Kołat D, Kałuzińska-Kołat Ż. The artificial oxygen carrier erythrocruorin-characteristics and potential significance in medicine. J Mol Med (Berl) 2023; 101:961-972. [PMID: 37460699 PMCID: PMC10400677 DOI: 10.1007/s00109-023-02350-3] [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: 09/05/2022] [Revised: 07/04/2023] [Accepted: 07/07/2023] [Indexed: 08/05/2023]
Abstract
The diminishing supply and increasing costs of donated blood have motivated research into novel hemoglobin-based oxygen carriers (HBOCs) that can serve as red blood cell (RBC) substitutes. HBOCs are versatile agents that can be used in the treatment of hemorrhagic shock. However, many of the RBC substitutes that are based on mammalian hemoglobins have presented key limitations such as instability and toxicity. In contrast, erythrocruorins (Ecs) are other types of HBOCs that may not suffer these disadvantages. Ecs are giant metalloproteins found in annelids, crustaceans, and some other invertebrates. Thus far, the Ecs of Lumbricus terrestris (LtEc) and Arenicola marina (AmEc) are the most thoroughly studied. Based on data from preclinical transfusion studies, it was found that these compounds not only efficiently transport oxygen and have anti-inflammatory properties, but also can be modified to further increase their effectiveness. This literature review focuses on the structure, properties, and application of Ecs, as well as their advantages over other HBOCs. Development of methods for both the stabilization and purification of erythrocruorin could confer to enhanced access to artificial blood resources.
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Affiliation(s)
- Weronika Kruczkowska
- Faculty of Biomedical Sciences, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland
| | - Mateusz Kciuk
- Department of Molecular Biotechnology and Genetics, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha 12/16, 90-237, Lodz, Poland
| | - Zbigniew Pasieka
- Department of Experimental Surgery, Medical University of Lodz, Narutowicza 60, 90-136, Lodz, Poland
| | - Karol Kłosiński
- Department of Experimental Surgery, Medical University of Lodz, Narutowicza 60, 90-136, Lodz, Poland
| | - Elżbieta Płuciennik
- Department of Functional Genomics, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland
| | - Jacob Elmer
- Department of Chemical and Biological Engineering, Villanova University, Villanova, PA, USA
| | - Klaudia Waszczykowska
- Department of Functional Genomics, Medical University of Lodz, Zeligowskiego 7/9, 90-752, Lodz, Poland
| | - Damian Kołat
- Department of Experimental Surgery, Medical University of Lodz, Narutowicza 60, 90-136, Lodz, Poland
| | - Żaneta Kałuzińska-Kołat
- Department of Experimental Surgery, Medical University of Lodz, Narutowicza 60, 90-136, Lodz, Poland.
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4
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Ahmed S, Alam W, Alsharif KF, Aschner M, Alzahrani FM, Saso L, Khan H. Therapeutic potential of marine peptides in malignant melanoma. ENVIRONMENTAL RESEARCH 2023; 227:115771. [PMID: 36967001 DOI: 10.1016/j.envres.2023.115771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 03/18/2023] [Accepted: 03/23/2023] [Indexed: 05/08/2023]
Abstract
Malignant melanoma is the most dangerous type of skin cancer. It is becoming more common globally and is increasingly resistant to treatment options. Despite extensive research into its pathophysiology, there are still no proven cures for metastatic melanoma. Unfortunately, current treatments are frequently ineffective and costly, and have several adverse effects. Natural substances have been extensively researched for their anti-MM capabilities. Chemoprevention and adjuvant therapy with natural products is an emerging strategy to prevent, cure or treat melanoma. Numerous prospective drugs are found in aquatic species, providing a plentiful supply of lead cytotoxic chemicals for cancer treatment. Anticancer peptides are less harmful to healthy cells and cure cancer through several different methods, such as altered cell viability, apoptosis, angiogenesis/metastasis suppression, microtubule balance disturbances and targeting lipid composition of the cancer cell membrane. This review addresses marine peptides as effective and safe treatments for MM and details their molecular mechanisms of action.
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Affiliation(s)
- Salman Ahmed
- Department of Pharmacognosy, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan.
| | - Waqas Alam
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan.
| | - Khalaf F Alsharif
- Department of Clinical Laboratory Sciences, College of Applied Medical Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
| | - Fuad M Alzahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Science, Taif University, P.O. Box 11099, Taif, 21944, Saudi Arabia.
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer"Sapienza University, 00185, Rome, Italy.
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan, Mardan, 23200, Pakistan.
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5
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Stoyanova E, Mihaylova N, Ralchev N, Ganova P, Bradyanova S, Manoylov I, Raynova Y, Idakieva K, Tchorbanov A. Antitumor Properties of Epitope-Specific Engineered Vaccine in Murine Model of Melanoma. Mar Drugs 2022; 20:md20060392. [PMID: 35736195 PMCID: PMC9227764 DOI: 10.3390/md20060392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 06/07/2022] [Accepted: 06/07/2022] [Indexed: 02/01/2023] Open
Abstract
Finding new effective compounds of natural origin for composing anti-tumor vaccines is one of the main goals of antitumor research. Promising anti-cancer agents are the gastropodan hemocyanins-multimeric copper-containing glycoproteins used so far for therapy of different tumors. The properties of hemocyanins isolated from the marine snail Rapana thomasiana (RtH) and the terrestrial snail Helix aspersa (HaH) upon their use as carrier-proteins in conjugated vaccines, containing ganglioside mimotope GD3P4 peptide, were studied in the developed murine melanoma model. Murine melanoma cell line B16F10 was used for solid tumor establishment in C57BL/6 mice using various schemes of therapy. Protein engineering, flow cytometry, and cytotoxicity assays were also performed. The administration of the protein-engineered vaccines RtH-GD3P4 or HaH-GD3P4 under the three different regimens of therapy in the B16F10 murine melanoma model suppressed tumor growth, decreased tumor incidence, and prolonged the survival of treated animals. The immunization of experimental mice induced an infiltration of immunocompetent cells into the tumors and generated cytotoxic tumor-specific T cells in the spleen. The treatment also generates significantly higher levels of tumor-infiltrated M1 macrophages, compared to untreated tumor-bearing control mice. This study demonstrated a promising approach for cancer therapy having potential applications for cancer vaccine research.
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Affiliation(s)
- Emiliya Stoyanova
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
| | - Nikolina Mihaylova
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
| | - Nikola Ralchev
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
| | - Petya Ganova
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
| | - Silviya Bradyanova
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
| | - Iliyan Manoylov
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
| | - Yuliana Raynova
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (Y.R.); (K.I.)
| | - Krassimira Idakieva
- Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (Y.R.); (K.I.)
| | - Andrey Tchorbanov
- Laboratory of Experimental Immunology, Stefan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria; (E.S.); (N.M.); (N.R.); (P.G.); (S.B.); (I.M.)
- Correspondence: ; Tel.: + 359-2-979-6357; Fax: +359-2-870-0109
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6
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Villar J, Salazar ML, Jiménez JM, Campo MD, Manubens A, Gleisner MA, Ávalos I, Salazar-Onfray F, Salazar F, Mitchell DA, Alshahrani MY, Martínez-Pomares L, Becker MI. C-type lectin receptors MR and DC-SIGN are involved in recognition of hemocyanins, shaping their immunostimulatory effects on human dendritic cells. Eur J Immunol 2021; 51:1715-1731. [PMID: 33891704 DOI: 10.1002/eji.202149225] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 02/16/2021] [Accepted: 04/09/2021] [Indexed: 12/22/2022]
Abstract
Hemocyanins are used as immunomodulators in clinical applications because they induce a strong Th1-biased cell-mediated immunity, which has beneficial effects. They are multiligand glycosylated molecules with abundant and complex mannose-rich structures. It remains unclear whether these structures influence hemocyanin-induced immunostimulatory processes in human APCs. We have previously shown that hemocyanin glycans from Concholepas concholepas (CCH), Fissurella latimarginata (FLH), and Megathura crenulata (KLH), participate in their immune recognition and immunogenicity in mice, interacting with murine C-type lectin receptors (CLRs). Here, we studied the interactions of these hemocyanins with two major mannose-binding CLRs on monocyte-derived human DCs: MR (mannose receptor) and DC-SIGN (DC-specific ICAM-3-grabbing nonintegrin). Diverse analyses showed that hemocyanins are internalized by a mannose-sensitive mechanism. This process was calcium dependent. Moreover, hemocyanins colocalized with MR and DC-SIGN, and were partly internalized through clathrin-mediated endocytosis. The hemocyanin-mediated proinflammatory cytokine response was impaired when using deglycosylated FLH and KLH compared to CCH. We further showed that hemocyanins bind to human MR and DC-SIGN in a carbohydrate-dependent manner with affinity constants in the physiological concentration range. Overall, we showed that these three clinically valuable hemocyanins interact with human mannose-sensitive CLRs, initiating an immune response and promoting a Th1 cell-driving potential.
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Affiliation(s)
- Javiera Villar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
| | - Michelle L Salazar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
| | - José M Jiménez
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
| | - Miguel Del Campo
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
| | - Augusto Manubens
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile.,Biosonda Corporation, Santiago, Chile
| | - María Alejandra Gleisner
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Ignacio Ávalos
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Flavio Salazar-Onfray
- Disciplinary Program of Immunology, Institute of Biomedical Sciences, Universidad de Chile, Santiago, Chile.,Millennium Institute on Immunology and Immunotherapy, Universidad de Chile, Santiago, Chile
| | - Fabián Salazar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile.,Medical Research Council (MRC) Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Daniel A Mitchell
- Warwick Medical School, University of Warwick, Coventry, United Kingdom
| | - Mohammad Y Alshahrani
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | | | - María Inés Becker
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile.,Biosonda Corporation, Santiago, Chile
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7
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Emsen B, Kolukisa AL. Cytogenetic and oxidative effects of three lichen extracts on human peripheral lymphocytes. ACTA ACUST UNITED AC 2020; 76:291-299. [PMID: 34218549 DOI: 10.1515/znc-2020-0135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 12/01/2020] [Indexed: 11/15/2022]
Abstract
In the present study, we investigated cytogenetic and oxidative [total antioxidant capacity (TAC), total oxidant status (TOS)] effects of methanol and water extracts of Cladonia chlorophaea (Flörke ex Sommerf.) Sprengel, Dermatocarpon miniatum (L.) W.Mann and Parmelia saxatilis (L.) Ach. on cultured human lymphocytes. In addition, different phenolic compounds in the extracts were quantified by high performance liquid chromatography (HPLC) analysis. As a result of HPLC analysis, methanol extracts of all lichen species tested had higher phenolic compounds. Likewise, methanol extracts of each lichen increased TAC levels in lymphocytes more than water extracts. The TOS levels of the cells treated with different concentrations (1-100 mg/L) of the extracts decreased due to the increasing concentration of the extracts. Genotoxicity experiments revealed that the tested lichen extracts did not significantly increase (p > 0.05) the level of genotoxicity on human peripheral lymphocyte culture compared to the negative control group. The results showed that C. chlorophaea, D. miniatum and P. saxatilis lichens, which were found to be a rich source of phenolic compounds, might be of interest in the pharmaceutical and food industries.
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Affiliation(s)
- Bugrahan Emsen
- Department of Biology, Kamil Özdağ Faculty of Science, Karamanoğlu Mehmetbey University, Karaman, Turkey
| | - Ayse Levent Kolukisa
- Department of Biology, Kamil Özdağ Faculty of Science, Karamanoğlu Mehmetbey University, Karaman, Turkey
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8
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Summer K, Browne J, Liu L, Benkendorff K. Molluscan Compounds Provide Drug Leads for the Treatment and Prevention of Respiratory Disease. Mar Drugs 2020; 18:md18110570. [PMID: 33228163 PMCID: PMC7699502 DOI: 10.3390/md18110570] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 11/16/2020] [Accepted: 11/16/2020] [Indexed: 12/26/2022] Open
Abstract
Respiratory diseases place an immense burden on global health and there is a compelling need for the discovery of new compounds for therapeutic development. Here, we identify research priorities by critically reviewing pre-clinical and clinical studies using extracts and compounds derived from molluscs, as well as traditional molluscan medicines, used in the treatment of respiratory diseases. We reviewed 97 biomedical articles demonstrating the anti-inflammatory, antimicrobial, anticancer, and immunomodulatory properties of >320 molluscan extracts/compounds with direct relevance to respiratory disease, in addition to others with promising bioactivities yet to be tested in the respiratory context. Of pertinent interest are compounds demonstrating biofilm inhibition/disruption and antiviral activity, as well as synergism with approved antimicrobial and chemotherapeutic agents. At least 100 traditional medicines, incorporating over 300 different mollusc species, have been used to treat respiratory-related illness in cultures worldwide for thousands of years. These medicines provide useful clues for the discovery of bioactive components that likely underpin their continued use. There is particular incentive for investigations into anti-inflammatory compounds, given the extensive application of molluscan traditional medicines for symptoms of inflammation, and shells, which are the principal molluscan product used in these preparations. Overall, there is a need to target research toward specific respiratory disease-related hypotheses, purify bioactive compounds and elucidate their chemical structures, and develop an evidence base for the integration of quality-controlled traditional medicines.
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Affiliation(s)
- Kate Summer
- Marine Ecology Research Centre, School of Environment, Science and Engineering, Southern Cross University, GPO Box 157, Lismore, NSW 2480, Australia;
| | - Jessica Browne
- School of Health and Human Sciences, Southern Cross University, Terminal Drive, Bilinga, QLD 4225, Australia;
| | - Lei Liu
- Southern Cross Plant Science, Southern Cross University, GPO Box 157, Lismore, NSW 2480, Australia;
| | - Kirsten Benkendorff
- National Marine Science Centre, Southern Cross University, 2 Bay Drive, Coffs Harbour, NSW 2450, Australia
- Correspondence: ; Tel.: +61-429-520-589
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9
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Winter P, Stubenvoll S, Scheiblhofer S, Joubert IA, Strasser L, Briganser C, Soh WT, Hofer F, Kamenik AS, Dietrich V, Michelini S, Laimer J, Lackner P, Horejs-Hoeck J, Tollinger M, Liedl KR, Brandstetter J, Huber CG, Weiss R. In silico Design of Phl p 6 Variants With Altered Fold-Stability Significantly Impacts Antigen Processing, Immunogenicity and Immune Polarization. Front Immunol 2020; 11:1824. [PMID: 33013833 PMCID: PMC7461793 DOI: 10.3389/fimmu.2020.01824] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 07/07/2020] [Indexed: 12/18/2022] Open
Abstract
Introduction: Understanding, which factors determine the immunogenicity and immune polarizing properties of proteins, is an important prerequisite for designing better vaccines and immunotherapeutics. While extrinsic immune modulatory factors such as pathogen associated molecular patterns are well-understood, far less is known about the contribution of protein inherent features. Protein fold-stability represents such an intrinsic feature contributing to immunogenicity and immune polarization by influencing the amount of peptide-MHC II complexes (pMHCII). Here, we investigated how modulation of the fold-stability of the grass pollen allergen Phl p 6 affects its ability to stimulate immune responses and T cell polarization. Methods: MAESTRO software was used for in silico prediction of stabilizing or destabilizing point mutations. Mutated proteins were expressed in E. coli, and their thermal stability and resistance to endolysosomal proteases was determined. Resulting peptides were analyzed by mass spectrometry. The structure of the most stable mutant protein was assessed by X-ray crystallography. We evaluated the capacity of the mutants to stimulate T cell proliferation in vitro, as well as antibody responses and T cell polarization in vivo in an adjuvant-free BALB/c mouse model. Results: In comparison to wild-type protein, stabilized or destabilized mutants displayed changes in thermal stability ranging from -5 to +14°. While highly stabilized mutants were degraded very slowly, destabilization led to faster proteolytic processing in vitro. This was confirmed in BMDCs, which processed and presented the immunodominant epitope from a destabilized mutant more efficiently compared to a highly stable mutant. In vivo, stabilization resulted in a shift in immune polarization from TH2 to TH1/TH17 as indicated by higher levels of IgG2a and increased secretion of TNF-α, IFN-γ, IL-17, and IL-21. Conclusion: MAESTRO software was very efficient in detecting single point mutations that increase or reduce fold-stability. Thermal stability correlated well with the speed of proteolytic degradation and presentation of peptides on the surface of dendritic cells in vitro. This change in processing kinetics significantly influenced the polarization of T cell responses in vivo. Modulating the fold-stability of proteins thus has the potential to optimize and polarize immune responses, which opens the door to more efficient design of molecular vaccines.
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Affiliation(s)
- Petra Winter
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Stefan Stubenvoll
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | | | - Lisa Strasser
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Carolin Briganser
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Wai Tuck Soh
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Florian Hofer
- Center of Molecular Biosciences & Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Anna Sophia Kamenik
- Center of Molecular Biosciences & Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Valentin Dietrich
- Center of Molecular Biosciences & Institute of Organic Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Sara Michelini
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Josef Laimer
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Peter Lackner
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | | | - Martin Tollinger
- Center of Molecular Biosciences & Institute of Organic Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Klaus R Liedl
- Center of Molecular Biosciences & Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | | | - Christian G Huber
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Richard Weiss
- Department of Biosciences, University of Salzburg, Salzburg, Austria
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10
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Intensive therapy with gastropodan hemocyanins increases their antitumor properties in murine model of colon carcinoma. Int Immunopharmacol 2020; 84:106566. [PMID: 32416451 DOI: 10.1016/j.intimp.2020.106566] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/02/2020] [Accepted: 05/03/2020] [Indexed: 12/22/2022]
Abstract
Various natural compounds have been tested as anticancer therapeutics in clinical trials. Most promising direction for antitumor therapy is the use of substances which enhance the immune system response stimulating tumor-specific lymphocytes. Hemocyanins are large extracellular oxygen transport glycoproteins isolated from different arthropod and mollusk species which exhibit strong anticancer properties. Immunized in mammals they trigger Th1 immune response that promotes unspecific stimulation and adjuvant activity in experimental therapeutic vaccines for cancer and antibody development. In the present study we used two hemocyanins - one isolated from marine snail Rapana thomasiana (RtH) and another one, from the terrestrial snail Helix pomatia (HpH) which have been investigated by using different administration schedules (intensive and mild) in murine model of colon carcinoma. The treatment with RtH and HpH generated high levels of antitumor IgG antibodies, antibody-producing plasma cells and tumor-specific CTLs, stimulated secretion of proinflammatory cytokines, suppressed the manifestation of carcinoma symptoms as tumor growth and size, and prolonged the life span of treated mice. Our results showed a significant anti-cancer effect of RtH and HpH hemocyanins on a murine model of colon carcinoma with promising potential for immunotherapy in various schemes of administration based on cross-reactive tumor-associated epitopes.
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Salazar ML, Jiménez JM, Villar J, Rivera M, Báez M, Manubens A, Becker MI. N-Glycosylation of mollusk hemocyanins contributes to their structural stability and immunomodulatory properties in mammals. J Biol Chem 2019; 294:19546-19564. [PMID: 31719148 PMCID: PMC6926458 DOI: 10.1074/jbc.ra119.009525] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/29/2019] [Indexed: 12/16/2022] Open
Abstract
Hemocyanins are widely used as carriers, adjuvants, and nonspecific immunostimulants in cancer because they promote Th1 immunity in mammals. Hemocyanins also interact with glycan-recognizing innate immune receptors on antigen-presenting cells, such as the C-type lectin immune receptors mannose receptor (MR), macrophage galactose lectin (MGL), and the Toll-like receptors (TLRs), stimulating proinflammatory cytokine secretion. However, the role of N-linked oligosaccharides on the structural and immunological properties of hemocyanin is unclear. Mollusk hemocyanins, such as Concholepas concholepas (CCH), Fissurella latimarginata (FLH), and Megathura crenulata (KLH), are oligomeric glycoproteins with complex dodecameric quaternary structures and heterogeneous glycosylation patterns, primarily consisting of mannose-rich N-glycans. Here, we report that enzyme-catalyzed N-deglycosylation of CCH, FLH, and KLH disrupts their quaternary structure and impairs their immunogenic effects. Biochemical analyses revealed that the deglycosylation does not change hemocyanin secondary structure but alters their refolding mechanism and dodecameric structure. Immunochemical analyses indicated decreased binding of N-deglycosylated hemocyanins to the MR and MGL receptors and TLR4 and reduced endocytosis concomitant with an impaired production of tumor necrosis factor α, and interleukins 6 and 12 (IL-6 and IL-12p40, respectively) in macrophages. Evaluating the function of N-deglycosylated hemocyanins in the humoral immune response and their nonspecific antitumor effects in the B16F10 melanoma model, we found that compared with native hemocyanins N-deglycosylated hemocyanins elicited reduced antibody titers, as well as partially diminished antitumor effects and altered carrier activities. In conclusion, the glycan content of hemocyanins is, among other structural characteristics, critically required for their immunological activities and should be considered in biomedical applications.
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Affiliation(s)
- Michelle L Salazar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile
| | - José M Jiménez
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile
| | - Javiera Villar
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile
| | - Maira Rivera
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile
| | - Mauricio Báez
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago 8380494, Chile
| | - Augusto Manubens
- Departamento de Investigación y Desarrollo, Biosonda Corp., Santiago 7750269, Chile
| | - María Inés Becker
- Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago 7750269, Chile .,Departamento de Investigación y Desarrollo, Biosonda Corp., Santiago 7750269, Chile
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Andries L, De Groef L, Moons L. Neuroinflammation and Optic Nerve Regeneration: Where Do We Stand in Elucidating Underlying Cellular and Molecular Players? Curr Eye Res 2019; 45:397-409. [PMID: 31567007 DOI: 10.1080/02713683.2019.1669664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Neurodegenerative diseases and central nervous system (CNS) trauma are highly irreversible, in part because adult mammals lack a robust regenerative capacity. A multifactorial problem underlies the limited axonal regeneration potential. Strikingly, neuroinflammation seems able to induce axonal regrowth in the adult mammalian CNS. It is increasingly clear that both blood-borne and resident inflammatory cells as well as reactivated glial cells affect axonal regeneration. The scope of this review is to give a comprehensive overview of the knowledge that links inflammation (with a focus on the innate immune system) to axonal regeneration and to critically reflect on the controversy that still prevails about the cells, molecules and pathways that are dominating the scene. Also, a brief overview is given of what is already known about the crosstalk between and the heterogeneity of cell types that might play a role in axonal regeneration. Recent research indicates that inflammation-induced axonal regrowth is not solely driven by a single-cell population but probably relies on the crosstalk between multiple cell types and the strong regulation of these cell populations in time and space. Moreover, there is growing evidence that the different cell populations are highly heterogeneous and as such can react differently upon injury. This could explain the controversial results that have been obtained over the past years. The primary focus of this manuscript is the retinofugal system of adult mammals, however, when relevant, insights or examples of the spontaneous regenerating zebrafish model and spinal cord research are added.
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Affiliation(s)
- Lien Andries
- Department of Biology, Neural Circuit Development and Regeneration Research Group, KU Leuven, Leuven, Belgium
| | - Lies De Groef
- Department of Biology, Neural Circuit Development and Regeneration Research Group, KU Leuven, Leuven, Belgium
| | - Lieve Moons
- Department of Biology, Neural Circuit Development and Regeneration Research Group, KU Leuven, Leuven, Belgium
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Pan L, Zhang X, Yang L, Pan S. Effects of Vibro harveyi and Staphyloccocus aureus infection on hemocyanin synthesis and innate immune responses in white shrimp Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2019; 93:659-668. [PMID: 31419533 DOI: 10.1016/j.fsi.2019.08.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 08/03/2019] [Accepted: 08/08/2019] [Indexed: 06/10/2023]
Abstract
Hemocyanin, a multifunctional oxygen-carrying protein, has critical effects on immune defense in crustaceans. To explore the role of hemocyanin in anti-pathogen mechanism, effects of Vibrio harveyi (V. harvey) and Staphyloccocus aureus (S. aureus) on hemocyanin synthesis and innate immune responses were investigated in Litopenaeus vannamei (L. vannamei) during infection in vivo. Results showed that 105 and 106 cells mL-1V. harveyi and 106 cells mL-1S. aureus significantly affected plasma hemocyanin concentration, hepatopancreas hemocyanin mRNA and subunits expressions, plasma phenol oxidase (PO), hemocyanin-derived PO (Hd-PO), antibacterial, and bacteriolytic activities during the experiment under bacterial stress, while these parameters did not change remarkably in control group. The concentration of hemocyanin in plasma fluctuated, with a minimum at 12 h and a maximum at 24 h. Moreover, the expression of hemocyanin mRNA peaked at 12 h, while the level of hemocyanin p75 and p77 subunits reached maximum at 24 h. Besides, plasma PO and Hd-PO activities peaked at 24 h, and antimicrobial and bacteriolytic activities peaked at 12 h and 24 h, respectively. In addition, 105 cells mL-1S. aureus had no significant effect on the synthesis of hemocyanin and prophenoloxidase activating (pro-PO) system, but significantly increased antimicrobial activity at 12 h and bacteriolytic activity at 24 h. Therefore, these results suggest that the hemocyanin synthesis was initiated after invasion of pathogen, and the newly synthesized hemocyanin, acted as an immune molecule, can exerts PO activity to regulate the immune defense in L. vannamei in vivo.
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Affiliation(s)
- Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China.
| | - Xin Zhang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
| | - Liubing Yang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
| | - Shanshan Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
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Di G, Li Y, Zhao X, Wang N, Fu J, Li M, Huang M, You W, Kong X, Ke C. Differential proteomic profiles and characterizations between hyalinocytes and granulocytes in ivory shell Babylonia areolata. FISH & SHELLFISH IMMUNOLOGY 2019; 92:405-420. [PMID: 31212011 DOI: 10.1016/j.fsi.2019.06.036] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/11/2019] [Accepted: 06/13/2019] [Indexed: 06/09/2023]
Abstract
The haemocytes of the ivory shell, Babylonia areolata are classified by morphologic observation into the following types: hyalinocytes (H) and granulocytes (G). Haemocytes comprise diverse cell types with morphological and functional heterogene and play indispensable roles in immunological homeostasis of invertebrates. In the present study, two types of haemocytes were morphologically identified and separated as H and G by Percoll density gradient centrifugation. The differentially expressed proteins were investigated between H and G using mass spectrometry. The results showed that total quantitative proteins between H and G samples were 1644, the number of up-regulated proteins in G was 215, and the number of down-regulated proteins in G was 378. Among them, cathepsin, p38 MAPK, toll-interacting protein-like and beta-adrenergic receptor kinase 2-like were up-regulated in G; alpha-2-macroglobulin-like protein, C-type lectin, galectin-2-1, galectin-3, β-1,3-glucan-binding protein, ferritin, mega-hemocyanin, mucin-17-like, mucin-5AC-like and catalytic subunit of protein kinase A were down-regulated in G. The results showed that the most significantly enriched KEGG pathways were the pathways related to ribosome, phagosome, endocytosis, carbon metabolism, protein processing in endoplasmic reticulum and oxidative phosphorylation. For phagosome and endocytosis pathway, the number of down-regulation proteins in G was more than that of up-regulation proteins. For lysosome pathway, the number of up-regulation proteins in G was more than that of down-regulation proteins. These results suggested that two sub-population haemocytes perform the different immune functions in B. areolata.
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Affiliation(s)
- Guilan Di
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Yanfei Li
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Xianliang Zhao
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Ning Wang
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China
| | - Jingqiang Fu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Min Li
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Miaoqin Huang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Weiwei You
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China
| | - Xianghui Kong
- College of Fisheries, Henan Normal University, Xinxiang, 453007, China.
| | - Caihuan Ke
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen, China.
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Development of an on-line analytical platform to screen haptens in shuxuening injection based on high-performance liquid chromatography coupled with ion-trap multistage mass spectrometry and human serum albumin fluorescence detection. J Chromatogr A 2019; 1598:232-241. [DOI: 10.1016/j.chroma.2019.04.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 04/05/2019] [Accepted: 04/07/2019] [Indexed: 12/31/2022]
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Jiménez JM, Salazar ML, Arancibia S, Villar J, Salazar F, Brown GD, Lavelle EC, Martínez-Pomares L, Ortiz-Quintero J, Lavandero S, Manubens A, Becker MI. TLR4, but Neither Dectin-1 nor Dectin-2, Participates in the Mollusk Hemocyanin-Induced Proinflammatory Effects in Antigen-Presenting Cells From Mammals. Front Immunol 2019; 10:1136. [PMID: 31214162 PMCID: PMC6554540 DOI: 10.3389/fimmu.2019.01136] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/07/2019] [Indexed: 11/18/2022] Open
Abstract
Mollusk hemocyanins have biomedical uses as carriers/adjuvants and nonspecific immunostimulants with beneficial clinical outcomes by triggering the production of proinflammatory cytokines in antigen-presenting cells (APCs) and driving immune responses toward type 1 T helper (Th1) polarization. Significant structural features of hemocyanins as a model antigen are their glycosylation patterns. Indeed, hemocyanins have a multivalent nature as highly mannosylated antigens. We have previously shown that hemocyanins are internalized by APCs through receptor-mediated endocytosis with proteins that contain C-type lectin domains, such as mannose receptor (MR). However, the contribution of other innate immune receptors to the proinflammatory signaling pathway triggered by hemocyanins is unknown. Thus, we studied the roles of Dectin-1, Dectin-2, and Toll-like receptor 4 (TLR4) in the hemocyanin activation of murine APCs, both in dendritic cells (DCs) and macrophages, using hemocyanins from Megathura crenulata (KLH), Concholepas concholepas (CCH) and Fissurella latimarginata (FLH). The results showed that these hemocyanins bound to chimeric Dectin-1 and Dectin-2 receptors in vitro; which significantly decreased when the glycoproteins were deglycosylated. However, hemocyanin-induced proinflammatory effects in APCs from Dectin-1 knock-out (KO) and Dectin-2 KO mice were independent of both receptors. Moreover, when wild-type APCs were cultured in the presence of hemocyanins, phosphorylation of Syk kinase was not detected. We further showed that KLH and FLH induced ERK1/2 phosphorylation, a key event involved in the TLR signaling pathway. We confirmed a glycan-dependent binding of hemocyanins to chimeric TLR4 in vitro. Moreover, DCs from mice deficient for MyD88-adapter-like (Mal), a downstream adapter molecule of TLR4, were partially activated by FLH, suggesting a role of the TLR pathway in hemocyanin recognition to activate APCs. The participation of TLR4 was confirmed through a decrease in IL-12p40 and IL-6 secretion induced by FLH when a TLR4 blocking antibody was used; a reduction was also observed in DCs from C3H/HeJ mice, a mouse strain with a nonfunctional mutation for this receptor. Moreover, IL-6 secretion induced by FLH was abolished in macrophages deficient for TLR4. Our data showed the involvement of TLR4 in the hemocyanin-mediated proinflammatory response in APCs, which could cooperate with MR in innate immune recognition of these glycoproteins.
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Affiliation(s)
- José M. Jiménez
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Michelle L. Salazar
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Sergio Arancibia
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Javiera Villar
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
| | - Fabián Salazar
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
- Aberdeen Fungal Group, Medical Research Council Centre for Medical Mycology, University of Aberdeen, Aberdeen, United Kingdom
| | - Gordon D. Brown
- Aberdeen Fungal Group, Medical Research Council Centre for Medical Mycology, University of Aberdeen, Aberdeen, United Kingdom
| | - Ed C. Lavelle
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | | | - Jafet Ortiz-Quintero
- Facultad de Ciencias Químicas y Farmacéuticas, Facultad de Medicina, Advanced Center for Chronic Diseases, Universidad de Chile, Santiago, Chile
| | - Sergio Lavandero
- Facultad de Ciencias Químicas y Farmacéuticas, Facultad de Medicina, Advanced Center for Chronic Diseases, Universidad de Chile, Santiago, Chile
| | | | - María Inés Becker
- Fundación Ciencia y Tecnología Para el Desarrollo (FUCITED), Santiago, Chile
- Biosonda Corporation, Santiago, Chile
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Immunotherapeutic Potential of Mollusk Hemocyanins in Combination with Human Vaccine Adjuvants in Murine Models of Oral Cancer. J Immunol Res 2019; 2019:7076942. [PMID: 30847353 PMCID: PMC6362480 DOI: 10.1155/2019/7076942] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 11/06/2018] [Indexed: 02/07/2023] Open
Abstract
Mollusk hemocyanins have been used for decades in immunological and clinical applications as natural, nontoxic, nonpathogenic, and nonspecific immunostimulants for the treatment of superficial bladder cancer, as carriers/adjuvants of tumor-associated antigens in cancer vaccine development and as adjuvants to dendritic cell-based immunotherapy, because these glycoproteins induce a bias towards Th1 immunity. Here, we analyzed the preclinical therapeutic potential of the traditional keyhole limpet hemocyanin (KLH) and two new hemocyanins from Concholepas concholepas (CCH) and Fissurella latimarginata (FLH) in mouse models of oral squamous cell carcinoma. Due to the aggressiveness and deadly malignant potential of this cancer, the hemocyanins were applied in combination with adjuvants, such as alum, AddaVax, and QS-21, which have been shown to be safe and effective in human vaccines, to potentiate their antitumor activity. The immunogenic performance of the hemocyanins in combination with the adjuvants was compared, and the best formulation was evaluated for its antitumor effects in two murine models of oral cancer: MOC7 cells implanted in the flank (heterotopic) and bioluminescent AT-84 E7 Luc cells implanted in the floor of the mouth (orthotopic). The results demonstrated that the hemocyanins in combination with QS-21 showed the greatest immunogenicity, as reflected by a robust, specific humoral response predominantly characterized by IgG2a antibodies and a sustained cellular response manifesting as a delayed hypersensitivity reaction. The KLH- and FLH-QS-21 formulations showed reduced tumor development and greater overall survival. Hemocyanins, as opposed to QS-21, had no cytotoxic effect on either oral cancer cell line cultured in vitro, supporting the idea that the antitumor effects of hemocyanins are associated with their modulation of the immune response. Therefore, hemocyanin utilization would allow a lower QS-21 dosage to achieve therapeutic results. Overall, our study opens a new door to further investigation of the use of hemocyanins plus adjuvants for the development of immunotherapies against oral carcinoma.
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Palacios M, Tampe R, Del Campo M, Zhong TY, López MN, Salazar-Onfray F, Becker MI. Antitumor activity and carrier properties of novel hemocyanins coupled to a mimotope of GD2 ganglioside. Eur J Med Chem 2018. [DOI: 10.1016/j.ejmech.2018.02.082] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Zhang YL, Peng B, Li H, Yan F, Wu HK, Zhao XL, Lin XM, Min SY, Gao YY, Wang SY, Li YY, Peng XX. C-Terminal Domain of Hemocyanin, a Major Antimicrobial Protein from Litopenaeus vannamei: Structural Homology with Immunoglobulins and Molecular Diversity. Front Immunol 2017; 8:611. [PMID: 28659912 PMCID: PMC5468459 DOI: 10.3389/fimmu.2017.00611] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 05/09/2017] [Indexed: 11/24/2022] Open
Abstract
Invertebrates rely heavily on immune-like molecules with highly diversified variability so as to counteract infections. However, the mechanisms and the relationship between this variability and functionalities are not well understood. Here, we showed that the C-terminal domain of hemocyanin (HMC) from shrimp Litopenaeus vannamei contained an evolutionary conserved domain with highly variable genetic sequence, which is structurally homologous to immunoglobulin (Ig). This domain is responsible for recognizing and binding to bacteria or red blood cells, initiating agglutination and hemolysis. Furthermore, when HMC is separated into three fractions using anti-human IgM, IgG, or IgA, the subpopulation, which reacted with anti-human IgM (HMC-M), showed the most significant antimicrobial activity. The high potency of HMC-M is a consequence of glycosylation, as it contains high abundance of α-d-mannose relative to α-d-glucose and N-acetyl-d-galactosamine. Thus, the removal of these glycans abolished the antimicrobial activity of HMC-M. Our results present a comprehensive investigation of the role of HMC in fighting against infections through genetic variability and epigenetic modification.
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Affiliation(s)
- Yue-Ling Zhang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Bo Peng
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Hui Li
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Fang Yan
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Hong-Kai Wu
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Xian-Liang Zhao
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Xiang-Min Lin
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
| | - Shao-Ying Min
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Yuan-Yuan Gao
- School of Life Sciences, Xiamen University, Xiamen, Fujian, China
| | - San-Ying Wang
- School of Life Sciences, Xiamen University, Xiamen, Fujian, China
| | - Yuan-You Li
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, School of Sciences, Shantou University, Shantou, China
| | - Xuan-Xian Peng
- Center for Proteomics, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, University City, Guangzhou, China
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Scheiblhofer S, Laimer J, Machado Y, Weiss R, Thalhamer J. Influence of protein fold stability on immunogenicity and its implications for vaccine design. Expert Rev Vaccines 2017; 16:479-489. [PMID: 28290225 PMCID: PMC5490637 DOI: 10.1080/14760584.2017.1306441] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
INTRODUCTION In modern vaccinology and immunotherapy, recombinant proteins more and more replace whole organisms to induce protective or curative immune responses. Structural stability of proteins is of crucial importance for efficient presentation of antigenic peptides on MHC, which plays a decisive role for triggering strong immune reactions. Areas covered: In this review, we discuss structural stability as a key factor for modulating the potency of recombinant vaccines and its importance for antigen proteolysis, presentation, and stimulation of B and T cells. Moreover, the impact of fold stability on downstream events determining the differentiation of T cells into effector cells is reviewed. We summarize studies investigating the impact of protein fold stability on the outcome of the immune response and provide an overview on computational methods to estimate the effects of point mutations on protein stability. Expert commentary: Based on this information, the rational design of up-to-date vaccines is discussed. A model for predicting immunogenicity of proteins based on their conformational stability at different pH values is proposed.
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Affiliation(s)
- Sandra Scheiblhofer
- a Department of Molecular Biology , University of Salzburg , Salzburg , Austria
| | - Josef Laimer
- a Department of Molecular Biology , University of Salzburg , Salzburg , Austria
| | - Yoan Machado
- a Department of Molecular Biology , University of Salzburg , Salzburg , Austria
| | - Richard Weiss
- a Department of Molecular Biology , University of Salzburg , Salzburg , Austria
| | - Josef Thalhamer
- a Department of Molecular Biology , University of Salzburg , Salzburg , Austria
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Pizarro-Bauerle J, Maldonado I, Sosoniuk-Roche E, Vallejos G, López MN, Salazar-Onfray F, Aguilar-Guzmán L, Valck C, Ferreira A, Becker MI. Molluskan Hemocyanins Activate the Classical Pathway of the Human Complement System through Natural Antibodies. Front Immunol 2017; 8:188. [PMID: 28286504 PMCID: PMC5323374 DOI: 10.3389/fimmu.2017.00188] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 02/09/2017] [Indexed: 11/18/2022] Open
Abstract
Molluskan hemocyanins are enormous oxygen-carrier glycoproteins that show remarkable immunostimulatory properties when inoculated in mammals, such as the generation of high levels of antibodies, a strong cellular reaction, and generation of non-specific antitumor immune responses in some types of cancer, particularly for superficial bladder cancer. These proteins have the ability to bias the immune response toward a Th1 phenotype. However, despite all their current uses with beneficial clinical outcomes, a clear mechanism explaining these properties is not available. Taking into account reports of natural antibodies against the hemocyanin of the gastropod Megathura crenulata [keyhole limpet hemocyanin (KLH)] in humans as well as other vertebrate species, we report here for the first time, the presence, in sera from unimmunized healthy donors, of antibodies recognizing, in addition to KLH, two other hemocyanins from gastropods with documented immunomodulatory capacities: Fisurella latimarginata hemocyanin (FLH) and Concholepas concholepas hemocyanin (CCH). Through an ELISA screening, we found IgM and IgG antibodies reactive with these hemocyanins. When the capacity of these antibodies to bind deglycosylated hemocyanins was studied, no decreased interaction was detected. Moreover, in the case of FLH, deglycosylation increased antibody binding. We evaluated through an in vitro complement deposition assay whether these antibodies activated the classical pathway of the human complement system. The results showed that all three hemocyanins and their deglycosylated counterparts elicited this activation, mediated by C1 binding to immunoglobulins. Thus, this work contributes to the understanding on how the complement system could participate in the immunostimulatory properties of hemocyanins, through natural, complement-activating antibodies reacting with these proteins. Although a role for carbohydrates cannot be completely ruled out, in our experimental setting, glycosylation status had a limited effect. Finally, our data open possibilities for further studies leading to the design of improved hemocyanin-based research tools for diagnosis and immunotherapy.
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Affiliation(s)
- Javier Pizarro-Bauerle
- Immunology of Microbial Aggression Laboratory, Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile , Santiago , Chile
| | - Ismael Maldonado
- Immunology of Microbial Aggression Laboratory, Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile , Santiago , Chile
| | - Eduardo Sosoniuk-Roche
- Immunology of Microbial Aggression Laboratory, Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile , Santiago , Chile
| | - Gerardo Vallejos
- Immunology of Microbial Aggression Laboratory, Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile , Santiago , Chile
| | - Mercedes N López
- Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, ICBM, Universidad de Chile, Santiago, Chile; Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile, Santiago, Chile
| | - Flavio Salazar-Onfray
- Faculty of Medicine, Millennium Institute on Immunology and Immunotherapy, ICBM, Universidad de Chile, Santiago, Chile; Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile, Santiago, Chile
| | - Lorena Aguilar-Guzmán
- Faculty of Veterinary Medicine and Livestock Sciences, University of Chile , Santiago , Chile
| | - Carolina Valck
- Immunology of Microbial Aggression Laboratory, Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile , Santiago , Chile
| | - Arturo Ferreira
- Immunology of Microbial Aggression Laboratory, Immunology Program, Faculty of Medicine, ICBM, Universidad de Chile , Santiago , Chile
| | - María Inés Becker
- Biosonda Corporation, Santiago, Chile; Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
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Immunological properties of oxygen-transport proteins: hemoglobin, hemocyanin and hemerythrin. Cell Mol Life Sci 2016; 74:293-317. [PMID: 27518203 PMCID: PMC5219038 DOI: 10.1007/s00018-016-2326-7] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/17/2016] [Accepted: 08/03/2016] [Indexed: 01/22/2023]
Abstract
It is now well documented that peptides with enhanced or alternative functionality (termed cryptides) can be liberated from larger, and sometimes inactive, proteins. A primary example of this phenomenon is the oxygen-transport protein hemoglobin. Aside from respiration, hemoglobin and hemoglobin-derived peptides have been associated with immune modulation, hematopoiesis, signal transduction and microbicidal activities in metazoans. Likewise, the functional equivalents to hemoglobin in invertebrates, namely hemocyanin and hemerythrin, act as potent immune effectors under certain physiological conditions. The purpose of this review is to evaluate the true extent of oxygen-transport protein dynamics in innate immunity, and to impress upon the reader the multi-functionality of these ancient proteins on the basis of their structures. In this context, erythrocyte-pathogen antibiosis and the immune competences of various erythroid cells are compared across diverse taxa.
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Zhong TY, Arancibia S, Born R, Tampe R, Villar J, Del Campo M, Manubens A, Becker MI. Hemocyanins Stimulate Innate Immunity by Inducing Different Temporal Patterns of Proinflammatory Cytokine Expression in Macrophages. THE JOURNAL OF IMMUNOLOGY 2016; 196:4650-62. [PMID: 27183578 DOI: 10.4049/jimmunol.1501156] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 03/24/2016] [Indexed: 12/20/2022]
Abstract
Hemocyanins induce a potent Th1-dominant immune response with beneficial clinical outcomes when used as a carrier/adjuvant in vaccines and nonspecific immunostimulant in cancer. However, the mechanisms by which hemocyanins trigger innate immune responses, leading to beneficial adaptive immune responses, are unknown. This response is triggered by a proinflammatory signal from various components, of which macrophages are an essential part. To understand how these proteins influence macrophage response, we investigated the effects of mollusks hemocyanins with varying structural and immunological properties, including hemocyanins from Concholepas concholepas, Fissurella latimarginata, and Megathura crenulata (keyhole limpet hemocyanin), on cultures of peritoneal macrophages. Hemocyanins were phagocytosed and slowly processed. Analysis of this process showed differential gene expression along with protein levels of proinflammatory markers, including IL-1β, IL-6, IL-12p40, and TNF-α. An extended expression analysis of 84 cytokines during a 24-h period showed a robust proinflammatory response for F. latimarginata hemocyanin in comparison with keyhole limpet hemocyanin and C. concholepas hemocyanin, which was characterized by an increase in the transcript levels of M1 cytokines involved in leukocyte recruitment. These cytokine genes included chemokines (Cxcl1, Cxcl3, Cxcl5, Ccl2, and Ccl3), ILs (Il1b and Ifng), growth factors (Csf2 and Csf3), and TNF family members (Cd40lg). The protein levels of certain cytokines were increased. However, every hemocyanin maintains downregulated key M2 cytokine genes, including Il4 and Il5 Collectively, our data demonstrate that hemocyanins are able to trigger the release of proinflammatory factors with different patterns of cytokine expression, suggesting differential signaling pathways and transcriptional network mechanisms that lead to the activation of M1-polarized macrophages.
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Affiliation(s)
- Ta-Ying Zhong
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and
| | - Sergio Arancibia
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and
| | - Raimundo Born
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and
| | - Ricardo Tampe
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and
| | - Javiera Villar
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and
| | - Miguel Del Campo
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and
| | | | - María Inés Becker
- Fundación Ciencia y Tecnología para el Desarrollo, Santiago 7750269, Chile; and Biosonda Corporation, Santiago 7750269, Chile
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Nakamura H, Ohkuri T, So T, Ueda T. Relationship between the magnitude of IgE production in mice and conformational stability of the house dust mite allergen, Der p 2. Biochim Biophys Acta Gen Subj 2016; 1860:2279-84. [PMID: 27108391 DOI: 10.1016/j.bbagen.2016.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 03/20/2016] [Accepted: 04/17/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Protein antigens are degraded by endosomal protease in antigen presentation cell. T cells recognize peptides derived from antigen proteins bound to class II major histocompatibility complex molecules. We previously reported that an increase in the conformational stability of an antigen depressed its immunogenicity. However, there is little information on antigens with differences in molecular properties such as net charges and molecular weight. METHODS Denaturation experiments against guanidine hydrochloride. The serum IgE levels to protein antigens at 35days after the first immunization analyzed using ELISA. RESULTS The Der p 2 mutations in which Ile13 is mutated to Ala (I13A) and Ala122 is mutated to Ile (A122I) were shown to have lower and higher conformational stability than the wild-type, respectively, by denaturation experiments. The amount of IgE production by the less stable I13A mutant was higher and that of the stable A122I mutant was lower than that of the wild-type. CONCLUSION Our results suggest that the increased conformational stability of Der p 2 depressed the IgE production in mice. GENERAL SIGNIFICANCE These findings should provide a milestone for the engineering of allergen vaccines.
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Affiliation(s)
- Hitomi Nakamura
- Graduate School of Pharmaceutical Sciences, Kyushu University, Japan; Faculty of Pharmaceutical Sciences, Sojo University, Japan
| | - Takatoshi Ohkuri
- Graduate School of Pharmaceutical Sciences, Kyushu University, Japan; Faculty of Pharmaceutical Sciences, Sojo University, Japan
| | - Takanori So
- Graduate School of Medicine, Tohoku University, Japan
| | - Tadashi Ueda
- Graduate School of Pharmaceutical Sciences, Kyushu University, Japan.
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Arancibia S, Barrientos A, Torrejón J, Escobar A, Beltrán CJ. Copper oxide nanoparticles recruit macrophages and modulate nitric oxide, proinflammatory cytokines and PGE2 production through arginase activation. Nanomedicine (Lond) 2016; 11:1237-51. [PMID: 27079258 DOI: 10.2217/nnm.16.39] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM In the present study, we examine the effects of copper oxide nanoparticles (CuNP) on macrophage immune response and the signaling pathways involved. MATERIALS & METHODS A peritonitis model was used to determine in vivo immune cells recruitment, while primary macrophages were used as an in vitro model for the cellular and molecular analysis. RESULTS In vivo, CuNP induce significant macrophages recruitment to the site of injection. In vitro, in LPS-stimulated primary macrophages, the co-treatment with CuNP inhibited the production of NO in a dose-dependent manner. The mechanism underlying NO and proinflammatory cytokines inhibition was associated with an increased arginase activity. Macrophage stimulation with CuNP did not provoke any cytokine secretion; however, arginase inhibition promoted TNFα and MIP-1β production. In addition, CuNP induced the expression of COX-2 and the production of PGE2 through arginase activation. CONCLUSION Our results demonstrate that CuNP activate arginase and suppress macrophage innate immune response.
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Affiliation(s)
- Sergio Arancibia
- Investigación y Desarrollo, Fundación Ciencia y Tecnología para el Desarrollo, Santiago, Chile.,Investigación y Desarrollo, Laboratorio Centrovet, Santiago, Chile
| | | | - Javiera Torrejón
- Investigación y Desarrollo, Laboratorio Centrovet, Santiago, Chile
| | - Alejandro Escobar
- Instituto de Investigación en Ciencias Odontológicas, Facultad de Odontología, Universidad de Chile, Santiago, Chile
| | - Caroll J Beltrán
- Facultad de Medicina, Universidad de Chile, Santiago, Chile.,Departamento de Gastroenterología, Hospital Clínico de la Universidad de Chile, Santiago, Chile
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Zheng L, Zhao X, Zhang P, Chen C, Liu S, Huang R, Zhong M, Wei C, Zhang Y. Hemocyanin from Shrimp Litopenaeus vannamei Has Antiproliferative Effect against HeLa Cell In Vitro. PLoS One 2016; 11:e0151801. [PMID: 27007573 PMCID: PMC4805270 DOI: 10.1371/journal.pone.0151801] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 03/05/2016] [Indexed: 12/30/2022] Open
Abstract
Hemocyanin (HMC) has been shown to participate in multiple roles of immune defence. In this study, we investigated the antiproliferative effect and underpinning mechanism of HMC from Litopenaeus vannamei in vitro. Sulforhodamine B (SRB) assay indicated that HMC could dramatically inhibit the growth of HeLa cells, but not 293T cells under the same conditions. Moreover, typical morphological features of apoptosis in HeLa cells including the formation of apoptotic body-like vesicles, chromatin condensation and margination were observed by using 4, 6-diamidino-2- phenylindole dihydrochloride (DAPI) staining and fluorescence analysis. An apoptotic DNA ladder from 180 to 300 bp was also detected. Furthermore, 10 variation proteins associated with apoptosis pathway, viz. G3PDH isoforms 1/2 (G3PDH1/2), aldosereductase, ectodemal dysplasia receptor associated death receptor domain isoform CRA_a (EDARADD), heat shock 60kD protein 1 variant 1 (HSP60), heat shock 70kDa protein 5 precursor (HSP70), heat shock protein 90kDa beta member 1 precursor (HSP90), 14-3-3 protein ζ/δ, Ran and ubiquitin activating enzyme E1(UBE1), were identified from HMC-treated HeLa cells by the proteomic and quantitative real-time RT-PCR strategies. Importantly, the reactive oxygen species (ROS), mitochondrial membrane potential (Δψm) and caspase-9/3 activities were changed significantly in HMC-treated HeLa cells. Together, the data suggests that L. vannamei HMC mediates antiproliferative properties through the apoptosis mechanism involving the mitochondria triggered pathway.
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Affiliation(s)
- Liyuan Zheng
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Xianliang Zhao
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Pei Zhang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Chuandao Chen
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Shangjie Liu
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Runqing Huang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Mingqi Zhong
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
| | - Chiju Wei
- Research Institute for Biomedical and Advanced Materials, Shantou University, Shantou, 515063, China
| | - Yueling Zhang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, 515063, China
- * E-mail:
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Machado Y, Freier R, Scheiblhofer S, Thalhamer T, Mayr M, Briza P, Grutsch S, Ahammer L, Fuchs JE, Wallnoefer HG, Isakovic A, Kohlbauer V, Hinterholzer A, Steiner M, Danzer M, Horejs-Hoeck J, Ferreira F, Liedl KR, Tollinger M, Lackner P, Johnson CM, Brandstetter H, Thalhamer J, Weiss R. Fold stability during endolysosomal acidification is a key factor for allergenicity and immunogenicity of the major birch pollen allergen. J Allergy Clin Immunol 2015; 137:1525-34. [PMID: 26559323 PMCID: PMC4877439 DOI: 10.1016/j.jaci.2015.09.026] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 08/30/2015] [Accepted: 09/08/2015] [Indexed: 01/22/2023]
Abstract
BACKGROUND The search for intrinsic factors, which account for a protein's capability to act as an allergen, is ongoing. Fold stability has been identified as a molecular feature that affects processing and presentation, thereby influencing an antigen's immunologic properties. OBJECTIVE We assessed how changes in fold stability modulate the immunogenicity and sensitization capacity of the major birch pollen allergen Bet v 1. METHODS By exploiting an exhaustive virtual mutation screening, we generated mutants of the prototype allergen Bet v 1 with enhanced thermal and chemical stability and rigidity. Structural changes were analyzed by means of x-ray crystallography, nuclear magnetic resonance, and molecular dynamics simulations. Stability was monitored by using differential scanning calorimetry, circular dichroism, and Fourier transform infrared spectroscopy. Endolysosomal degradation was simulated in vitro by using the microsomal fraction of JAWS II cells, followed by liquid chromatography coupled to mass spectrometry. Immunologic properties were characterized in vitro by using a human T-cell line specific for the immunodominant epitope of Bet v 1 and in vivo in an adjuvant-free BALB/c mouse model. RESULTS Fold stabilization of Bet v 1 was pH dependent and resulted in resistance to endosomal degradation at a pH of 5 or greater, affecting presentation of the immunodominant T-cell epitope in vitro. These properties translated in vivo into a strong allergy-promoting TH2-type immune response. Efficient TH2 cell activation required both an increased stability at the pH of the early endosome and efficient degradation at lower pH in the late endosomal/lysosomal compartment. CONCLUSIONS Our data indicate that differential pH-dependent fold stability along endosomal maturation is an essential protein-inherent determinant of allergenicity.
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Affiliation(s)
- Yoan Machado
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Regina Freier
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | | | - Theresa Thalhamer
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Melissa Mayr
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Peter Briza
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Sarina Grutsch
- Center of Molecular Biosciences & Institute of Organic Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Linda Ahammer
- Center of Molecular Biosciences & Institute of Organic Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Julian E Fuchs
- Center of Molecular Biosciences & Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Hannes G Wallnoefer
- Center of Molecular Biosciences & Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Almedina Isakovic
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Vera Kohlbauer
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | | | - Markus Steiner
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Martin Danzer
- Austrian Red Cross, Blood Transfusion Service for Upper Austria, Linz, Austria
| | - Jutta Horejs-Hoeck
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Fatima Ferreira
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Klaus R Liedl
- Center of Molecular Biosciences & Institute of General, Inorganic and Theoretical Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Martin Tollinger
- Center of Molecular Biosciences & Institute of Organic Chemistry, University of Innsbruck, Innsbruck, Austria
| | - Peter Lackner
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | | | - Hans Brandstetter
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Josef Thalhamer
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Richard Weiss
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria.
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Rapana thomasiana hemocyanin modified with ionic liquids with enhanced anti breast cancer activity. Int J Biol Macromol 2015; 82:798-805. [PMID: 26478091 DOI: 10.1016/j.ijbiomac.2015.10.031] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 10/09/2015] [Accepted: 10/11/2015] [Indexed: 01/17/2023]
Abstract
This is the first study on the surface modification of a hemocyanin from marine snail Rapana thomasiana (RtH) with series of imidazolium-based amino acid ionic liquids [emim][AA]. We monitored the induced by [emim][AA] conformational changes in RtH molecule and evaluated the effect of these ionic liquids (ILs) on the protein thermal stability. The cytotoxicity of all obtained RtH-[emim][AA] complexes was assessed toward breast cancer cells (MCF-7) and murine fibroblasts (3T3). As a whole, even small amounts of the tested ILs altered the secondary structure of RtH. The thermal denaturation of RtH in presence of [emim][AA] displayed multi-component transitions, which were shifted toward lower temperatures in comparison to those estimated for the native RtH. The profiles of the RtH-IL calorimetric curves show a clear dependence on the structure of the added salts. In addition, all RtH-[emim][AA] complexes exhibited an enhanced antiprofilerative activity of toward MCF-7 cells in comparison to that of the native RtH. The best results are observed for RtH-[emim][Leu], RtH-[emim][Trp] or RtH-[emim][Ile], which applied in concentration of 700 μg/mL inhibited the MCF-7 cell viability (for 24h) by 66, 63 and 53%, respectively. In addition, these IL-RtH complexes were less cytotoxic to 3T3 cells, i.e. they exhibited some cell specificity.
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Gesheva V, Chausheva S, Mihaylova N, Manoylov I, Doumanova L, Idakieva K, Tchorbanov A. Anti-cancer properties of gastropodan hemocyanins in murine model of colon carcinoma. BMC Immunol 2014; 15:34. [PMID: 25168124 PMCID: PMC4164791 DOI: 10.1186/s12865-014-0034-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 08/21/2014] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Various immunotherapeutic approaches have been used for the treatment of cancer. A number of natural compounds are designed to repair, stimulate, or enhance the immune system response. Among them are the hemocyanins (Hcs) - extracellular copper proteins isolated from different arthropod and mollusc species. Hcs are oxygen transporter molecules and normally are freely dissolved in the hemolymph of these animals. Hemocyanins are very promising class of anti-cancer therapeutics due to their immunogenic properties and the absence of toxicity or side effects. KLH (Megathura crenulata hemocyanin) is the most studied molecule of this group setting a standard for natural carrier protein for small molecules and has been used in anti-tumor clinical trials. RESULTS The Hcs isolated from marine snail Rapana thomasiana (RtH) and the terrestrial snail Helix pomatia (HpH) express strong in vivo anti-cancer and anti-proliferative effects in the developed by us murine model of colon carcinoma. The immunization with RtH and HpH prolonged the survival of treated animals, improve humoral anti-cancer response and moderate the manifestation of C-26 carcinoma symptoms as tumor growth, splenomegaly and lung metastasis appearance. CONCLUSION Hemocyanins are used so far for therapy of superficial bladder cancer and murine melanoma models. Our findings demonstrate a potential anti-cancer effect of hemocyanins on a murine model of colon carcinoma suggesting their use for immunotherapy of different types of cancer.
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Affiliation(s)
| | | | | | | | | | | | - Andrey Tchorbanov
- The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Acad, G, Bonchev Str, 26, Sofia, 1113, Bulgaria.
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A novel immunomodulatory hemocyanin from the limpet Fissurella latimarginata promotes potent anti-tumor activity in melanoma. PLoS One 2014; 9:e87240. [PMID: 24466345 PMCID: PMC3900722 DOI: 10.1371/journal.pone.0087240] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 12/21/2013] [Indexed: 11/06/2022] Open
Abstract
Hemocyanins, the huge oxygen-transporting glycoproteins of some mollusks, are used as immunomodulatory proteins with proven anti-cancer properties. The biodiversity of hemocyanins has promoted interest in identifying new anti-cancer candidates with improved immunological properties. Hemocyanins promote Th1 responses without known side effects, which make them ideal for long-term sustained treatment of cancer. In this study, we evaluated a novel hemocyanin from the limpet/gastropod Fissurella latimarginata (FLH). This protein has the typical hollow, cylindrical structure of other known hemocyanins, such as the keyhole limpet hemocyanin (KLH) and the Concholepas hemocyanin (CCH). FLH, like the KLH isoforms, is composed of a single type of polypeptide with exposed N- and O-linked oligosaccharides. However, its immunogenicity was significantly greater than that of KLH and CCH, as FLH induced a stronger humoral immune response and had more potent anti-tumor activity, delaying tumor growth and increasing the survival of mice challenged with B16F10 melanoma cells, in prophylactic and therapeutic settings. Additionally, FLH-treated mice demonstrated increased IFN-γ production and higher numbers of tumor-infiltrating CD4+ lymphocytes. Furthermore, in vitro assays demonstrated that FLH, but not CCH or KLH, stimulated the rapid production of pro-inflammatory cytokines (IL-6, IL-12, IL-23 and TNF-α) by dendritic cells, triggering a pro-inflammatory milieu that may explain its enhanced immunological activity. Moreover, this effect was abolished when deglycosylated FLH was used, suggesting that carbohydrates play a crucial role in the innate immune recognition of this protein. Altogether, our data demonstrate that FLH possesses increased anti-tumor activity in part because it activates a more potent innate immune response in comparison to other known hemocyanins. In conclusion, FLH is a potential new marine adjuvant for immunization and possible cancer immunotherapy.
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Reyes D, Salazar L, Espinoza E, Pereda C, Castellón E, Valdevenito R, Huidobro C, Inés Becker M, Lladser A, López MN, Salazar-Onfray F. Tumour cell lysate-loaded dendritic cell vaccine induces biochemical and memory immune response in castration-resistant prostate cancer patients. Br J Cancer 2013; 109:1488-97. [PMID: 23989944 PMCID: PMC3777003 DOI: 10.1038/bjc.2013.494] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Revised: 07/24/2013] [Accepted: 07/30/2013] [Indexed: 12/16/2022] Open
Abstract
Background: Recently, we produced a tumour antigen-presenting cells (TAPCells) vaccine using a melanoma cell lysate, called TRIMEL, as an antigen source and an activation factor. Tumour antigen-presenting cells induced immunological responses and increased melanoma patient survival. Herein, we investigated the effect of TAPCells loaded with prostate cancer cell lysates (PCCL) as an antigen source, and TRIMEL as a dendritic cell (DC) activation factor; which were co-injected with the Concholepas concholepas haemocyanin (CCH) as an adjuvant on castration-resistant prostate cancer (CRPC) patients. Methods: The lysate mix capacity, for inducing T-cell activation, was analysed by flow cytometry and Elispot. Delayed-type hypersensitivity (DTH) reaction against PCCL, frequency of CD8+ memory T cells (Tm) in blood and prostate-specific antigen (PSA) levels in serum were measured in treated patients. Results: The lysate mix induced functional mature DCs that were capable of activating PCCL-specific T cells. No relevant adverse reactions were observed. Six out of 14 patients showed a significant decrease in levels of PSA. DTH+ patients showed a prolonged PSA doubling-time after treatment. Expansion of functional central and effector CD8+ Tm were detected. Conclusion: Treatment of CRPC patients with lysate-loaded TAPCells and CCH as an adjuvant is safe: generating biochemical and memory immune responses. However, the limited number of cases requires confirmation in a phase II clinical trial.
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Affiliation(s)
- D Reyes
- 1] Institute of Biomedical Sciences, Faculty of Medicine, University of Chile, Santiago 8380453, Chile [2] Service of Urology, University of Chile Clinical Hospital, Santiago 8380453, Chile [3] Millennium Institute on Immunology and Immunotherapy, University of Chile, Santiago 8380453 Chile
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Yumura K, Ui M, Doi H, Hamakubo T, Kodama T, Tsumoto K, Sugiyama A. Mutations for decreasing the immunogenicity and maintaining the function of core streptavidin. Protein Sci 2013; 22:213-21. [PMID: 23225702 DOI: 10.1002/pro.2203] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2012] [Revised: 11/24/2012] [Accepted: 11/26/2012] [Indexed: 11/12/2022]
Abstract
The defining property of core streptavidin (cSA) is not only its high binding affinity for biotin but also its pronounced thermal and chemical stability. Although potential applications of these properties including therapeutic methods have prompted much biological research, the high immunogenicity of this bacterial protein is a key obstacle to its clinical use. To this end, we have successfully constructed hypoimmunogenic cSA muteins in a previous report. However, the effects of these mutations on the physicochemical properties of muteins were still unclear. These mutations retained the similar electrostatic charges to those of wild-type (WT) cSA, and functional moieties with similar hydrogen bond pattern. Herein, we performed isothermal titration calorimetry, differential scanning calorimetry, and sodium dodecyl sulfate-polyacrylamide gel electrophoresis to gain insight into the physicochemical properties and functions of these modified versions of cSA. The results indicated that the hypoimmunogenic muteins retained the biotin-binding function and the tetramer structure of WT cSA. In addition, we discuss the potential mechanisms underlying the success of these mutations in achieving both immune evasion and retention of function; these mechanisms might be incorporated into a new strategy for constructing hypoimmunogenic proteins.
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Affiliation(s)
- Kyohei Yumura
- Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo 108-8639, Japan
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Núñez-Acuña G, Aguilar-Espinoza A, Chávez-Mardones J, Gallardo-Escárate C. Ubiquitin-conjugating enzyme E2-like gene associated to pathogen response in Concholepas concholepas: SNP identification and transcription expression. FISH & SHELLFISH IMMUNOLOGY 2012; 33:1065-1068. [PMID: 22971731 DOI: 10.1016/j.fsi.2012.08.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 08/21/2012] [Accepted: 08/24/2012] [Indexed: 06/01/2023]
Abstract
Ubiquitin-conjugated E2 enzyme (UBE2) is one of the main components of the proteasome degradation cascade. Previous studies have shown an increase of expression levels in individuals challenged to some pathogen organism such as virus and bacteria. The study was to characterize the immune response of UBE2 gene in the gastropod Concholepas concholepas through expression analysis and single nucleotide polymorphisms (SNP) discovery. Hence, UBE2 was identified from a cDNA library by 454 pyrosequencing, while SNP identification and validation were performed using De novo assembly and high resolution melting analysis. Challenge trials with Vibrio anguillarum was carried out to evaluate the relative transcript abundance of UBE2 gene from two to thirty-three hours post-treatment. The results showed a partial UBE2 sequence of 889 base pair (bp) with a partial coding region of 291 bp. SNP variation (A/C) was observed at the 546th position. Individuals challenged by V. anguillarum showed an overexpression of the UBE2 gene, the expression being significantly higher in homozygous individuals (AA) than (CC) or heterozygous individuals (A/C). This study contributes useful information relating to the UBE2 gene and its association with innate immune response in marine invertebrates.
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Affiliation(s)
- Gustavo Núñez-Acuña
- Laboratorio de Biotecnología y Genómica Acuícola, Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, P.O. Box 160-C, Concepción, Chile
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