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Lin F, Soko WC, Xie J, Bi H. On-Chip Discovery of Allergens from the Exudate of Large Yellow Croaker ( Larimichthys Crocea) Muscle Food by Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:13546-13553. [PMID: 37647599 DOI: 10.1021/acs.jafc.3c03388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
It is extremely crucial to establish facile, accurate, and fast methods for testing allergenic proteins (allergens) in seafood. The current study focuses on the evaluation of fish muscle exudate proteins in an effort to discover potential allergens in fish exudate for allergy tests. Large yellow croaker (Larimichthys crocea) was studied as a seafood model. Magnetic beads (MBs) modified with an IgE antibody were utilized to isolate allergens existing in the exudate sample. Immunoglobulin E (IgE) in blood is a class of antibodies that is mainly associated with allergic reactions. Potential allergens in the muscle exudate were fished by IgE-biofunctional MBs in microfluidic channels. The protein-attached MBs were isolated under a magnetic field, eluted, and collected. The collected eluent was digested and analyzed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry to identify allergens. Eight allergens from large yellow croaker exudate were identified, i.e., parvalbumin beta, parvalbumin, protein S100, histone H4, cytochrome c, fatty acid binding protein 3 (FABP3), microsomal glutamate S-transfer 3 (MGST3), and C-C motif chemokine 21 (CCL21). The presently proposed microfluidic-magnetic-based allergen extraction protocol enables a facile and rapid test of potentials of seafood allergies, providing a solution to circumvent food safety issues, especially for allergic populations.
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Affiliation(s)
- Fang Lin
- College of Food Science and Technology, Shanghai Ocean University (SHOU), Hucheng Ring Road 999, Pudong New District, 201306 Shanghai, China
| | - Winnie C Soko
- College of Food Science and Technology, Shanghai Ocean University (SHOU), Hucheng Ring Road 999, Pudong New District, 201306 Shanghai, China
| | - Jing Xie
- College of Food Science and Technology, Shanghai Ocean University (SHOU), Hucheng Ring Road 999, Pudong New District, 201306 Shanghai, China
| | - Hongyan Bi
- College of Food Science and Technology, Shanghai Ocean University (SHOU), Hucheng Ring Road 999, Pudong New District, 201306 Shanghai, China
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Cristóvão JS, Romão MA, Gallardo R, Schymkowitz J, Rousseau F, Gomes CM. Targeting S100B with Peptides Encoding Intrinsic Aggregation-Prone Sequence Segments. Molecules 2021; 26:molecules26020440. [PMID: 33467751 PMCID: PMC7830867 DOI: 10.3390/molecules26020440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/12/2021] [Accepted: 01/12/2021] [Indexed: 12/11/2022] Open
Abstract
S100 proteins assume a diversity of oligomeric states including large order self-assemblies, with an impact on protein structure and function. Previous work has uncovered that S100 proteins, including S100B, are prone to undergo β-aggregation under destabilizing conditions. This propensity is encoded in aggregation-prone regions (APR) mainly located in segments at the homodimer interface, and which are therefore mostly shielded from the solvent and from deleterious interactions, under native conditions. As in other systems, this characteristic may be used to develop peptides with pharmacological potential that selectively induce the aggregation of S100B through homotypic interactions with its APRs, resulting in functional inhibition through a loss of function. Here we report initial studies towards this goal. We applied the TANGO algorithm to identify specific APR segments in S100B helix IV and used this information to design and synthesize S100B-derived APR peptides. We then combined fluorescence spectroscopy, transmission electron microscopy, biolayer interferometry, and aggregation kinetics and determined that the synthetic peptides have strong aggregation propensity, interact with S100B, and may promote co-aggregation reactions. In this framework, we discuss the considerable potential of such APR-derived peptides to act pharmacologically over S100B in numerous physiological and pathological conditions, for instance as modifiers of the S100B interactome or as promoters of S100B inactivation by selective aggregation.
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Affiliation(s)
- Joana S. Cristóvão
- Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade Lisboa, 1749-016 Lisbon, Portugal; (J.S.C.); (M.A.R.)
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade Lisboa, 1749-016 Lisbon, Portugal
| | - Mariana A. Romão
- Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade Lisboa, 1749-016 Lisbon, Portugal; (J.S.C.); (M.A.R.)
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade Lisboa, 1749-016 Lisbon, Portugal
| | - Rodrigo Gallardo
- VIB Switch Laboratory, Flanders Institute for Biotechnology (VIB), 3000 Leuven, Belgium;
- Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, PB 802, 3000 Leuven, Belgium
| | - Joost Schymkowitz
- VIB Switch Laboratory, Flanders Institute for Biotechnology (VIB), 3000 Leuven, Belgium;
- Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, PB 802, 3000 Leuven, Belgium
- Correspondence: (C.M.G.); (F.R.); (J.S.)
| | - Frederic Rousseau
- VIB Switch Laboratory, Flanders Institute for Biotechnology (VIB), 3000 Leuven, Belgium;
- Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Herestraat 49, PB 802, 3000 Leuven, Belgium
- Correspondence: (C.M.G.); (F.R.); (J.S.)
| | - Cláudio M. Gomes
- Biosystems and Integrative Sciences Institute, Faculdade de Ciências, Universidade Lisboa, 1749-016 Lisbon, Portugal; (J.S.C.); (M.A.R.)
- Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade Lisboa, 1749-016 Lisbon, Portugal
- Correspondence: (C.M.G.); (F.R.); (J.S.)
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Pérez-Tavarez R, Carrera M, Pedrosa M, Quirce S, Rodríguez-Pérez R, Gasset M. Reconstruction of fish allergenicity from the content and structural traits of the component β-parvalbumin isoforms. Sci Rep 2019; 9:16298. [PMID: 31704988 PMCID: PMC6841720 DOI: 10.1038/s41598-019-52801-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 10/23/2019] [Indexed: 02/07/2023] Open
Abstract
Most fish-allergic patients have anti-β-parvalbumin (β-PV) immunoglobulin E (IgE), which cross-reacts among fish species with variable clinical effects. Although the β-PV load is considered a determinant for allergenicity, fish species express distinct β-PV isoforms with unknown pathogenic contributions. To identify the role various parameters play in allergenicity, we have taken Gadus morhua and Scomber japonicus models, determined their β-PV isoform composition and analyzed the interaction of the IgE from fish-allergic patient sera with these different conformations. We found that each fish species contains a major and a minor isoform, with the total PV content four times higher in Gadus morhua than in Scomber japonicus. The isoforms showing the best IgE recognition displayed protease-sensitive globular folds, and if forming amyloids, they were not immunoreactive. Of the isoforms displaying stable globular folds, one was not recognized by IgE under any of the conditions, and the other formed highly immunoreactive amyloids. The results showed that Gadus morhua muscles are equipped with an isoform combination and content that ensures the IgE recognition of all PV folds, whereas the allergenic load of Scomber japonicus is under the control of proteolysis. We conclude that the consideration of isoform properties and content may improve the explanation of fish species allergenicity differences.
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Affiliation(s)
- Raquel Pérez-Tavarez
- Insto Química-Física "Rocasolano", Consejo Superior de Investigaciones Científicas, 28006, Madrid, Spain
| | - Mónica Carrera
- Insto Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, 36208, Vigo, Spain
| | - María Pedrosa
- Dpto de Alergología, Hospital Universitario La Paz, 28046, Madrid, Spain.,Insto de Investigación Hospital Universitario La Paz (IdiPaz), 28046, Madrid, Spain
| | - Santiago Quirce
- Dpto de Alergología, Hospital Universitario La Paz, 28046, Madrid, Spain.,Insto de Investigación Hospital Universitario La Paz (IdiPaz), 28046, Madrid, Spain
| | - Rosa Rodríguez-Pérez
- Insto de Investigación Hospital Universitario La Paz (IdiPaz), 28046, Madrid, Spain
| | - María Gasset
- Insto Química-Física "Rocasolano", Consejo Superior de Investigaciones Científicas, 28006, Madrid, Spain.
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Abstract
Ca2+ binding proteins (CBP) are of key importance for calcium to play its role as a pivotal second messenger. CBP bind Ca2+ in specific domains, contributing to the regulation of its concentration at the cytosol and intracellular stores. They also participate in numerous cellular functions by acting as Ca2+ transporters across cell membranes or as Ca2+-modulated sensors, i.e. decoding Ca2+ signals. Since CBP are integral to normal physiological processes, possible roles for them in a variety of diseases has attracted growing interest in recent years. In addition, research on CBP has been reinforced with advances in the structural characterization of new CBP family members. In this chapter we have updated a previous review on CBP, covering in more depth potential participation in physiopathological processes and candidacy for pharmacological targets in many diseases. We review intracellular CBP that contain the structural EF-hand domain: parvalbumin, calmodulin, S100 proteins, calcineurin and neuronal Ca2+ sensor proteins (NCS). We also address intracellular CBP lacking the EF-hand domain: annexins, CBP within intracellular Ca2+ stores (paying special attention to calreticulin and calsequestrin), proteins that contain a C2 domain (such as protein kinase C (PKC) or synaptotagmin) and other proteins of interest, such as regucalcin or proprotein convertase subtisilin kexins (PCSK). Finally, we summarise the latest findings on extracellular CBP, classified according to their Ca2+ binding structures: (i) EF-hand domains; (ii) EGF-like domains; (iii) ɣ-carboxyl glutamic acid (GLA)-rich domains; (iv) cadherin domains; (v) Ca2+-dependent (C)-type lectin-like domains; (vi) Ca2+-binding pockets of family C G-protein-coupled receptors.
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