1
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Vesković A, Bondžić AM, Popović Bijelić A. The Role of Ovalbumin in Manganese Homeostasis during Chick Embryogenesis: An EPR Spectroscopic Study. Molecules 2024; 29:3221. [PMID: 38999173 PMCID: PMC11243369 DOI: 10.3390/molecules29133221] [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: 06/06/2024] [Revised: 07/01/2024] [Accepted: 07/05/2024] [Indexed: 07/14/2024] Open
Abstract
Ovalbumin (OVA), a protein vital for chick embryo nutrition, hydration, and antimicrobial protection, together with other egg-white proteins, migrates to the amniotic fluid and is orally absorbed by the embryo during embryogenesis. Recently, it has been shown that for optimal eggshell quality, the hen diet can be supplemented with manganese. Although essential for embryonic development, manganese in excess causes neurotoxicity. This study investigates whether OVA may be involved in the regulation of manganese levels. The binding of Mn(II) to OVA was investigated using electron paramagnetic resonance (EPR) spectroscopy. The results show that OVA binds a maximum of two Mn(II) ions, one with slightly weaker affinity, even in a 10-fold excess, suggesting it may have a protective role from Mn(II) overload. It seems that the binding of Mn(II), or the presence of excess Mn(II), does not affect OVA's tertiary structure, as evidenced from fluorescence and UV/vis measurements. Comparative analysis with bovine and human serum albumins revealed that they exhibit higher affinities for Mn(II) than OVA, most likely due to their essentially different physiological roles. These findings suggest that OVA does not play a role in the transport and storage of manganese; however, it may be involved in embryo protection from manganese-induced toxicity.
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Affiliation(s)
- Ana Vesković
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12–16, 11158 Belgrade, Serbia;
| | - Aleksandra M. Bondžić
- Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11000 Belgrade, Serbia;
| | - Ana Popović Bijelić
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12–16, 11158 Belgrade, Serbia;
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2
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Uslu S, Lee UJ, Tavakolpour S, Abousaway O, Nili A, Bass L, Purwar P, Lacson E, Berland L, Kuhnast A, Clark LM, Picard D, Rakhshandehroo T, Mantri SR, Moravej H, Rashidian M. Development of a Stable Peptide-Major Histocompatibility Complex (MHC) via Sortase and Click Chemistry. ACS Pharmacol Transl Sci 2024; 7:1746-1757. [PMID: 38898944 PMCID: PMC11184609 DOI: 10.1021/acsptsci.3c00268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 04/14/2024] [Accepted: 04/16/2024] [Indexed: 06/21/2024]
Abstract
T cells play a crucial role in antitumor immune responses and the clearance of infected cells. They identify their targets through the binding of T-cell receptors (TCRs) to peptide-major histocompatibility complex (pMHC) molecules present in cancer cells, infected cells, and antigen-presenting cells. This interaction is often weak, requiring multimeric pMHC molecules to enhance the avidity for identifying antigen-specific T cells. Current exchangeable pMHC-I tetramerization methods may overlook TCRs recognizing less stable yet immunogenic peptides. In vivo applications targeting antigen-specific T cells demand the genetic synthesis of a pMHC fusion for each unique peptide antigen, which poses a significant challenge. To address these challenges, we developed a sortase and click chemistry-mediated approach for generating stable pMHC molecules. Leveraging sortase technology, we introduced an azide click-handle near the N-terminus of β2m, proximal to the MHC-peptide-binding groove. Simultaneously, the peptide was engineered with a multi glycine linker and a C-terminal alkyne click-handle. Azide-alkyne click reactions efficiently immobilized the peptide onto the MHC molecule, providing a versatile and efficient method for pMHC generation. The resulting peptide-clicked-MHC specifically binds to its cognate TCR and remains stable for over 3 months at 4 °C in the absence of any additional free peptide. The stability of the pMHC and its affinity to cognate TCRs are influenced by the linker's nature and length. Multi glycine linkers outperform poly(ethylene glycol) (PEG) linkers in this regard. This technology expands the toolkit for identifying and targeting antigen-specific T cells, enhancing our understanding of cancer-specific immune responses, and has the potential to streamline the development of personalized immunotherapies.
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Affiliation(s)
- Safak
C. Uslu
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
- Medical
Scientist Training Program, Hacettepe University
Faculty of Medicine, Ankara 06230, Turkey
| | - Uk-Jae Lee
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Soheil Tavakolpour
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Omar Abousaway
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Ali Nili
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Lily Bass
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Pragallabh Purwar
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Edward Lacson
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Lea Berland
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
- CNRS,
INSERM, IRCAN, Université Côte d’Azur, 06100 Nice, France
| | - Adrien Kuhnast
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Louise M. Clark
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Delia Picard
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Taha Rakhshandehroo
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Shreya R. Mantri
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Heydar Moravej
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
| | - Mohammad Rashidian
- Department
of Cancer Immunology and Virology, Dana-Farber
Cancer Institute, Boston, Massachusetts 02215, United States
- Department
of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts 02215, United States
- Parker
Institute for Cancer Immunotherapy, San Francisco, California 94129, United States
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3
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Rungelrath V, Ahmed M, Hicks L, Miller SM, Ryter KT, Montgomery K, Ettenger G, Riffey A, Abdelwahab WM, Khader SA, Evans JT. Vaccination with Mincle agonist UM-1098 and mycobacterial antigens induces protective Th1 and Th17 responses. NPJ Vaccines 2024; 9:100. [PMID: 38844494 PMCID: PMC11156909 DOI: 10.1038/s41541-024-00897-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 05/28/2024] [Indexed: 06/09/2024] Open
Abstract
Tuberculosis (TB), caused by Mycobacterium tuberculosis (Mtb), is one of the top infectious killers in the world. The only licensed vaccine against TB, Bacille Calmette-Guérin (BCG), provides variable protection against pulmonary TB, especially in adults. Hence, novel TB vaccine approaches are urgently needed. Both Th1 and Th17 responses are necessary for protection against TB, yet effective adjuvants and vaccine delivery systems for inducing robust Th1 and Th17 immunity are lacking. Herein we describe a synthetic Mincle agonist, UM-1098, and a silica nanoparticle delivery system that drives Th1/Th17 responses to Mtb antigens. Stimulation of human peripheral blood mononuclear cells (hPBMCs) with UM-1098 induced high levels of Th17 polarizing cytokines IL-6, IL-1β, IL-23 as well as IL-12p70, IL-4 and TNF-α in vitro. PBMCs from both C57BL/6 and BALB/c mice responded with a similar cytokine pattern in vitro and in vivo. Importantly, intramuscular (I.M.) vaccination with UM-1098-adjuvanted TB antigen M72 resulted in significantly higher antigen-specific IFN-γ and IL-17A levels in C57BL/6 wt mice than Mincle KO mice. Vaccination of C57BL/6 wt mice with immunodominant Mtb antigens ESAT6/Ag85B or M72 resulted in predominantly Th1 and Th17 responses and induced antigen-specific serum antibodies. Notably, in a virulent Mtb challenge model, vaccination with UM-1098 adjuvanted ESAT6/Ag85B or M72 significantly reduced lung bacterial burden when compared with unvaccinated mice and protection occurred in the absence of pulmonary inflammation. These data demonstrate that the synthetic Mincle agonist UM-1098 induces strong Th1 and Th17 immunity after vaccination with Mtb antigens and provides protection against Mtb infection in mice.
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Affiliation(s)
- Viktoria Rungelrath
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Mushtaq Ahmed
- Department of Microbiology, University of Chicago, 920 E. 58th St., Chicago, IL, 60637, USA
| | - Linda Hicks
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Shannon M Miller
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Kendal T Ryter
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Kyle Montgomery
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - George Ettenger
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Alexander Riffey
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Walid M Abdelwahab
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA
| | - Shabaana Abdul Khader
- Department of Microbiology, University of Chicago, 920 E. 58th St., Chicago, IL, 60637, USA
| | - Jay T Evans
- Center for Translational Medicine, University of Montana, 32 Campus Drive, Missoula, MT, 59812, USA.
- Department of Biomedical & Pharmaceutical Sciences, University of Montana, Missoula, MT, 59812, USA.
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4
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Yamazaki S, Takahashi K, Matsuda Y. Tag-free protein modification by lipoate ligase A: exploring substrate tolerance. ANAL SCI 2024; 40:1111-1119. [PMID: 38504072 DOI: 10.1007/s44211-024-00534-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 02/10/2024] [Indexed: 03/21/2024]
Abstract
This study delves into the functional intricacies of lipoate ligase A (LplA), an enzyme showing great promise in bioconjugation due to its unique capacity for introducing azido groups into proteins without requiring a genetic tag. We aimed to enhance the understanding of LplA's functionality, particularly its substrate tolerance and the reliability of various analytical techniques. A pivotal aspect of our approach was incorporating azido groups into a range of proteins, followed by the addition of the fluorescent molecule Cy3 via click chemistry. Analysis of fluorescent intensity in the altered proteins indicated varying degrees of conjugation. Additionally, phenyl resin-based RP-HPLC facilitated effective separation of modified proteins, unmodified proteins, and remaining fluorescent tags post-separation. SASA analysis provided insights into conjugation trends, guiding the identification of proteins amenable to LplA's tag-free modification. Our findings demonstrate LplA's broad substrate tolerability for protein modification.
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Affiliation(s)
- Shunsuke Yamazaki
- Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki, Kanagawa, 210-8681, Japan.
| | | | - Yutaka Matsuda
- Ajinomoto Co., Inc., 1-1 Suzuki-cho, Kawasaki, Kanagawa, 210-8681, Japan.
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5
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Paul B, Furst EM, Lenhoff AM, Wagner NJ, Teixeira SCM. Combined Effects of Pressure and Ionic Strength on Protein-Protein Interactions: An Empirical Approach. Biomacromolecules 2024; 25:338-348. [PMID: 38117685 DOI: 10.1021/acs.biomac.3c01001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Proteins are exposed to hydrostatic pressure (HP) in a variety of ecosystems as well as in processing steps such as freeze-thaw, cell disruption, sterilization, and homogenization, yet pressure effects on protein-protein interactions (PPIs) remain underexplored. With the goal of contributing toward the expanded use of HP as a fundamental control parameter in protein research, processing, and engineering, small-angle X-ray scattering was used to examine the effects of HP and ionic strength on ovalbumin, a model protein. Based on an extensive data set, we develop an empirical method for scaling PPIs to a master curve by combining HP and osmotic effects. We define an effective pressure parameter that has been shown to successfully apply to other model protein data available in the literature, with deviations evident for proteins that do not follow the apparent Hofmeister series. The limitations of the empirical scaling are discussed in the context of the hypothesized underlying mechanisms.
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Affiliation(s)
- Brian Paul
- Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
| | - Eric M Furst
- Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Abraham M Lenhoff
- Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Norman J Wagner
- Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Susana C M Teixeira
- Center for Neutron Science, Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, Maryland 20899, United States
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6
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Smith KP, Chakravarthy S, Rahi A, Chakraborty M, Vosberg KM, Tonelli M, Plach MG, Grigorescu AA, Curtis JE, Varma D. SAXS/MC studies of the mixed-folded protein Cdt1 reveal monomeric, folded over conformations. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.03.573975. [PMID: 38260441 PMCID: PMC10802334 DOI: 10.1101/2024.01.03.573975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Cdt1 is a protein critical for DNA replication licensing and is well-established to be a binding partner of the minichromosome maintenance (MCM) complex. Cdt1 has also been demonstrated to have an emerging, "moonlighting" role at the kinetochore via direct binding to microtubules and to the Ndc80 complex. However, it is not known how the structure and conformations of Cdt1 could allow for these multiple, completely unique sets of protein complexes. And while there exist multiple robust methods to study entirely folded or entirely unfolded proteins, structure-function studies of combined, mixed folded/disordered proteins remain challenging. It this work, we employ multiple orthogonal biophysical and computational techniques to provide a detailed structural characterization of human Cdt1 92-546. DSF and DSCD show both folded winged helix (WH) domains of Cdt1 are relatively unstable. CD and NMR show the N-terminal and the linker regions are intrinsically disordered. Using DLS and SEC-MALS, we show that Cdt1 is polydisperse, monomeric at high concentrations, and without any apparent inter-molecular self-association. SEC-SAXS of the monomer in solution enabled computational modeling of the protein in silico. Using the program SASSIE, we performed rigid body Monte Carlo simulations to generate a conformational ensemble. Using experimental SAXS data, we filtered for conformations which did and did not fit our data. We observe that neither fully extended nor extremely compact Cdt1 conformations are consistent with our SAXS data. The best fit models have the N-terminal and linker regions extended into solution and the two folded domains close to each other in apparent "folded over" conformations. The best fit Cdt1 conformations are consistent with a function as a scaffold protein which may be sterically blocked without the presence of binding partners. Our studies also provide a template for combining experimental and computational biophysical techniques to study mixed-folded proteins.
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Affiliation(s)
- Kyle P Smith
- Department of Cell & Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
- Present Address, Xylia Therapeutics, Waltham, MA, 02451, USA
| | - Srinivas Chakravarthy
- Biophysics Collaborative Access Team, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Amit Rahi
- Department of Cell & Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Manas Chakraborty
- Department of Cell & Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Kristen M Vosberg
- Department of Cell & Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Marco Tonelli
- National Magnetic Resonance Facility at Madison, Department of Biochemistry, University of Wisconsin, Madison, WI, 53706, USA
| | | | - Arabela A Grigorescu
- Keck Biophysics Facility, Department of Molecular Biosciences, Northwestern University, Evanston, IL, 60201, USA
| | - Joseph E Curtis
- NIST Center for Neutron Research, National Institute of Standards and Technology, 100 Bureau Drive, Mail Stop 6102, Gaithersburg, MD, 20899, United States
| | - Dileep Varma
- Department of Cell & Developmental Biology, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA
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7
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Bristow CL. Silencing Very-Low-Density Lipoprotein Receptor Reveals Alpha-1 Antitrypsin Role in HIV Infectivity. Methods Mol Biol 2024; 2750:175-184. [PMID: 38108977 DOI: 10.1007/978-1-0716-3605-3_16] [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] [Indexed: 12/19/2023]
Abstract
Here we describe methods for investigating alpha-1 antitrypsin (AAT) and very-low-density lipoprotein receptor (VLDLR) interactions with infectious and non-infectious HIV-1 virions. Using silencing RNA to transiently block expression of VLDLR and the receptor-associated protein (RAP) to continuously block VLDLR activity, AAT is demonstrated to participate with VLDLR during internalization and infectivity of HIV-1 virions.
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Affiliation(s)
- Cynthia L Bristow
- Alpha-1 Biologics, Long Island High Technology Incubator, Stony Brook University, Stony Brook, NY, USA.
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8
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Coelho MM, Bezerra EM, da Costa RF, de Alvarenga ÉC, Freire VN, Carvalho CR, Pessoa C, Albuquerque EL, Costa RA. In silico description of the adsorption of cell signaling pathway proteins ovalbumin, glutathione, LC3, TLR4, ASC PYCARD, PI3K and NF-Kβ on 7.0 nm gold nanoparticles: obtaining their Lennard-Jones-like potentials through docking and molecular mechanics. RSC Adv 2023; 13:35493-35499. [PMID: 38058560 PMCID: PMC10697183 DOI: 10.1039/d3ra06180a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 11/26/2023] [Indexed: 12/08/2023] Open
Abstract
The impact of vaccination on the world's population is difficult to calculate. For developing different types of vaccines, adjuvants are substances added to vaccines to increase the magnitude and durability of the immune response and the effectiveness of the vaccine. This work explores the potential use of spherical gold nanoparticles (AuNPs) as adjuvants. Thus, we employed docking techniques and molecular mechanics to describe how a AuNP 7.0 nm in diameter interacts with cell signaling pathway proteins. Initially, we used X-ray crystallization data of the proteins ovalbumin, glutathione, LC3, TLR4, ASC PYCARD, PI3K, and NF-Kβ to study the adsorption with an AuNP through molecular docking. Therefore, interaction energies were obtained for the AuNP complexes and individual proteins, as well as the AuNP and OVA complex (AuNP@OVA) with each cellular protein, respectively. Results showed that AuNPs had the highest affinity for OVA individually, followed by glutathione, ASC PYCARD domain, LC3, PI3K, NF-Kβ, and TLR4. Furthermore, when evaluating the AuNP@OVA complex, glutathione showed a greater affinity with more potent interaction energy when compared to the other studied systems.
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Affiliation(s)
- Monique M Coelho
- Departamento de Ciências Naturais, Universidade Federal de São João del Rei (UFSJ) São João del-Rei MG CEP 36301-160 Brazil
- Departamento de Bioquímica e Imunologia, Universidade Federal de Minas Gerais (UFMG) Belo Horizonte MG CEP 31270-910 Brazil
| | - Eveline M Bezerra
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal Rural do Semi-Árido (UFERSA) Mossoró RN CEP 59625-900 Brazil
| | - Roner F da Costa
- Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal Rural do Semi-Árido (UFERSA) Mossoró RN CEP 59625-900 Brazil
- Departamento de Ciências, Matemática e Estatística, Universidade Federal Rural do Semi-Árido (UFERSA) Mossoró RN CEP 59625-900 Brazil
| | - Érika C de Alvarenga
- Departamento de Ciências Naturais, Universidade Federal de São João del Rei (UFSJ) São João del-Rei MG CEP 36301-160 Brazil
| | - Valder N Freire
- Departamento de Física, Universidade Federal do Ceará (UFC) Fortaleza CE 60455-760 Brazil
| | - Cláudia R Carvalho
- Departamento de Ciências Naturais, Universidade Federal de São João del Rei (UFSJ) São João del-Rei MG CEP 36301-160 Brazil
- Departamento de Morfologia, Universidade Federal de Minas Gerais (UFMG) Belo Horizonte MG CEP 31270-910 Brazil
| | - Claudia Pessoa
- Programa de Pós-Graduação em Biotecnologia, Rede Nordeste de Biotecnologia (RENORBIO, ), Universidade Federal do Ceará (UFC) Fortaleza CE CEP 60020-181 Brazil
| | - Eudenilson L Albuquerque
- Departamento de Biofísica e Farmacologia, Universidade Federal do Rio Grande do Norte (UFRN) Natal RN CEP 59064-741 Brazil
| | - Raquel A Costa
- Departamento de Ciências Naturais, Universidade Federal de São João del Rei (UFSJ) São João del-Rei MG CEP 36301-160 Brazil
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9
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Tian M, Sun X, Cheng J, Guo M. Physicochemical and Functional Properties of Thermal-Induced Polymerized Goat Milk Whey Protein. Foods 2023; 12:3626. [PMID: 37835278 PMCID: PMC10572621 DOI: 10.3390/foods12193626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 09/23/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Goat milk whey protein products are a hard-to-source commodity. Whey protein concentrate was directly prepared from fresh goat milk. The effects of the heating temperature (69-78 °C), time (15-30 min), and pH (7.5-7.9) on the physicochemical and functional properties of the goat milk whey protein were investigated. The results showed that the particle size of the samples significantly increased (p < 0.05) after heat treatment. The zeta potential of polymerized goat milk whey protein (PGWP) was lower than that of native goat milk whey protein. The content of the free sulfhydryl groups of PGWP decreased with increasing heating temperature and time, while an increase in surface hydrophobicity and apparent viscosity of PGWP were observed after heat treatment. Fourier Transform Infrared Spectroscopy analysis indicated that heat treatment and pH had considerable impacts on the secondary structure of goat milk whey protein. Transmission electron microscope images revealed that heat induced the formation of a large and uniform protein network. Additionally, the changes in the physicochemical and structural properties contributed to the improvement of the emulsifying and foaming properties of goat milk whey protein after heat treatment. The results may provide a theoretical basis for the applications of polymerized goat milk whey protein in related products.
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Affiliation(s)
- Mu Tian
- College of Food Science and Technology, Southwest Minzu University, Chengdu 610041, China;
- Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin 150030, China; (X.S.); (J.C.)
| | - Xiaomeng Sun
- Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin 150030, China; (X.S.); (J.C.)
| | - Jianjun Cheng
- Key Laboratory of Dairy Science, Northeast Agricultural University, Harbin 150030, China; (X.S.); (J.C.)
| | - Mingruo Guo
- Department of Nutrition and Food Sciences, College of Agriculture and Life Sciences, University of Vermont, Burlington, VT 05405, USA
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10
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Martel A, Cocho C, Caporaletti F, Jacques M, El Aazzouzi A, Lapeyre F, Porcar L. Upgraded D22 SEC-SANS setup dedicated to the biology community. J Appl Crystallogr 2023; 56:994-1001. [PMID: 37555207 PMCID: PMC10405598 DOI: 10.1107/s1600576723004119] [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: 03/03/2023] [Accepted: 05/09/2023] [Indexed: 08/10/2023] Open
Abstract
Described here is the current status of the upgraded in situ size-exclusion chromatography (SEC) system implemented with the D22 small-angle neutron scattering (SANS) instrument at the Institut Laue-Langevin. Since its initial proof of principle in 2016, this SEC-SANS arrangement has been continuously requested by the user community, leading to the design of an upgraded version. A detailed description of the setup and its control is provided, and a few examples of protein structural investigations are presented, which will highlight the various possibilities and limitations of the setup to optimize experimental success.
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Affiliation(s)
- Anne Martel
- Institut Laue-Langevin, 71 avenue de Martyrs, Grenoble 38042, France
| | - Cristina Cocho
- Institut Laue-Langevin, 71 avenue de Martyrs, Grenoble 38042, France
| | - Francesca Caporaletti
- Institut Laue-Langevin, 71 avenue de Martyrs, Grenoble 38042, France
- Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden
| | - Mark Jacques
- Institut Laue-Langevin, 71 avenue de Martyrs, Grenoble 38042, France
| | | | - Franck Lapeyre
- Institut Laue-Langevin, 71 avenue de Martyrs, Grenoble 38042, France
| | - Lionel Porcar
- Institut Laue-Langevin, 71 avenue de Martyrs, Grenoble 38042, France
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11
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Cheng W, Wang M, Li C, Xiao F, He J, Liu L, Niu H, Ma J. Study of the weak interaction mechanism of ovalbumin and caffeic acid using fluorescence spectroscopy and molecular dynamics simulation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 301:122966. [PMID: 37327498 DOI: 10.1016/j.saa.2023.122966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/18/2023]
Abstract
With the increasing demand for functional foods, the study on binding of active molecules and ovalbumin (OVA) via weak interaction has attracted widespread attention. In this work, the interaction mechanism of OVA and caffeic acid (CA) was revealed using fluorescence spectroscopy and dynamics simulation. The CA-induced fluorescence decrease of OVA was static quenching. Their binding complex had about 1 binding site and a 3.39 × 105 L·mol-1 affinity ability. Based on thermodynamic calculations and molecular dynamics simulation, the complex structure of OVA and CA were stable using hydrophobic interactions as the main force, where CA preferred to interact with a stable binding pocket consisting of E256, E25, and V200 with N24 amino acid residues. In the binding process of CA and OVA, the conformation of OVA was altered with a slight reduction of α-helix and β-sheet. The reduced molecular volume and more compact structure of the protein indicated that CA is beneficial to the structural stability of OVA. The research provides some new insights into the interaction between dietary proteins and polyphenols, expanding the application prospects of OVA as a carrier.
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Affiliation(s)
- Weiwei Cheng
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China.
| | - Miaomiao Wang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Can Li
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Feng Xiao
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Jialiang He
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Lili Liu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Huawei Niu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China
| | - Jinliang Ma
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471000, China.
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12
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Chakravarty D, Schafer JW, Porter LL. Distinguishing features of fold-switching proteins. Protein Sci 2023; 32:e4596. [PMID: 36782353 PMCID: PMC9951197 DOI: 10.1002/pro.4596] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/30/2023] [Accepted: 02/09/2023] [Indexed: 02/15/2023]
Abstract
Though many folded proteins assume one stable structure that performs one function, a small-but-increasing number remodel their secondary and tertiary structures and change their functions in response to cellular stimuli. These fold-switching proteins regulate biological processes and are associated with autoimmune dysfunction, severe acute respiratory syndrome coronavirus-2 infection, and more. Despite their biological importance, it is difficult to computationally predict fold switching. With the aim of advancing computational prediction and experimental characterization of fold switchers, this review discusses several features that distinguish fold-switching proteins from their single-fold and intrinsically disordered counterparts. First, the isolated structures of fold switchers are less stable and more heterogeneous than single folders but more stable and less heterogeneous than intrinsically disordered proteins (IDPs). Second, the sequences of single fold, fold switching, and intrinsically disordered proteins can evolve at distinct rates. Third, proteins from these three classes are best predicted using different computational techniques. Finally, late-breaking results suggest that single folders, fold switchers, and IDPs have distinct patterns of residue-residue coevolution. The review closes by discussing high-throughput and medium-throughput experimental approaches that might be used to identify new fold-switching proteins.
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Affiliation(s)
- Devlina Chakravarty
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of HealthBethesdaMarylandUSA
| | - Joseph W. Schafer
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of HealthBethesdaMarylandUSA
| | - Lauren L. Porter
- National Center for Biotechnology Information, National Library of Medicine, National Institutes of HealthBethesdaMarylandUSA
- Biochemistry and Biophysics Center, National Heart, Lung, and Blood Institute, National Institutes of HealthBethesdaMarylandUSA
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13
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Müllertz OAO, Andersen P, Christensen D, Foged C, Thakur A. Pulmonary Administration of the Liposome-Based Adjuvant CAF01: Effect of Surface Charge on Mucosal Adjuvant Function. Mol Pharm 2023; 20:953-970. [PMID: 36583936 DOI: 10.1021/acs.molpharmaceut.2c00634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mucosal surfaces of the lungs represent a major site of entry for airborne pathogens, and pulmonary administration of vaccines is an attractive strategy to induce protective mucosal immunity in the airways. Recently, we demonstrated the potential of pulmonary vaccination with the tuberculosis subunit antigen H56 adjuvanted with the cationic liposomal adjuvant formulation CAF01, which consists of the cationic lipid dimethyldioctadecylammonium (DDA) bromide and the synthetic cord factor trehalose-6,6'-dibehenate. However, the cationic charge of DDA represents a major safety challenge. Hence, replacing DDA with a safer zwitterionic or anionic phospholipid is an attractive approach to improve vaccine safety, but the effect of liposomal surface charge on the induction of mucosal immunity after airway immunization is poorly understood. Here, we investigated the effect of surface charge by replacing the cationic DDA component of CAF01 with zwitterionic dipalmitoylphosphatidylcholine (DPPC) or anionic dipalmitoylphosphatidylglycerol (DPPG), and we show that charge modification enhances antigen-specific pulmonary T-cell responses against co-formulated H56. We systematically replaced DDA with either DPPC or DPPG and found that these modifications resulted in colloidally stable liposomes that have similar size and morphology to unmodified CAF01. DPPC- or DPPG-modified CAF01 displayed surface charge-dependent protein adsorption and induced slightly higher follicular helper T cells and germinal center B cells in the lung-draining lymph nodes than unmodified CAF01. In addition, modified CAF01 induced significantly higher levels of H56-specific Th17 cells and polyfunctional CD4+ T cells in the lungs, as compared to unmodified CAF01. However, the strong H56-specific humoral responses induced by CAF01 in the lungs and spleen were not influenced by surface charge. Hence, these results provide insights into the importance of surface charge for liposomal adjuvant function and can also guide the design of safe pulmonary subunit vaccines against other mucosal pathogens.
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Affiliation(s)
- Olivia Amanda Oest Müllertz
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen Ø2100, Denmark
| | - Peter Andersen
- Department of Infectious Disease Immunology, Statens Serum Institut, Artillerivej 5, Copenhagen S2300, Denmark
| | - Dennis Christensen
- Department of Infectious Disease Immunology, Statens Serum Institut, Artillerivej 5, Copenhagen S2300, Denmark
| | - Camilla Foged
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen Ø2100, Denmark
| | - Aneesh Thakur
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen Ø2100, Denmark
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14
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Housmans JAJ, Wu G, Schymkowitz J, Rousseau F. A guide to studying protein aggregation. FEBS J 2023; 290:554-583. [PMID: 34862849 DOI: 10.1111/febs.16312] [Citation(s) in RCA: 56] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 11/18/2021] [Accepted: 12/03/2021] [Indexed: 02/04/2023]
Abstract
Disrupted protein folding or decreased protein stability can lead to the accumulation of (partially) un- or misfolded proteins, which ultimately cause the formation of protein aggregates. Much of the interest in protein aggregation is associated with its involvement in a wide range of human diseases and the challenges it poses for large-scale biopharmaceutical manufacturing and formulation of therapeutic proteins and peptides. On the other hand, protein aggregates can also be functional, as observed in nature, which triggered its use in the development of biomaterials or therapeutics as well as for the improvement of food characteristics. Thus, unmasking the various steps involved in protein aggregation is critical to obtain a better understanding of the underlying mechanism of amyloid formation. This knowledge will allow a more tailored development of diagnostic methods and treatments for amyloid-associated diseases, as well as applications in the fields of new (bio)materials, food technology and therapeutics. However, the complex and dynamic nature of the aggregation process makes the study of protein aggregation challenging. To provide guidance on how to analyse protein aggregation, in this review we summarize the most commonly investigated aspects of protein aggregation with some popular corresponding methods.
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Affiliation(s)
- Joëlle A J Housmans
- Switch Laboratory, VIB Center for Brain and Disease Research, Leuven, Belgium.,Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Guiqin Wu
- Switch Laboratory, VIB Center for Brain and Disease Research, Leuven, Belgium.,Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Joost Schymkowitz
- Switch Laboratory, VIB Center for Brain and Disease Research, Leuven, Belgium.,Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Frederic Rousseau
- Switch Laboratory, VIB Center for Brain and Disease Research, Leuven, Belgium.,Switch Laboratory, Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
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15
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Schafer JW, Porter LL. Evolutionary selection of proteins with two folds. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.18.524637. [PMID: 36789442 PMCID: PMC9928049 DOI: 10.1101/2023.01.18.524637] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Although most globular proteins fold into a single stable structure 1 , an increasing number have been shown to remodel their secondary and tertiary structures in response to cellular stimuli 2 . State-of-the-art algorithms 3-5 predict that these fold-switching proteins assume only one stable structure 6,7 , missing their functionally critical alternative folds. Why these algorithms predict a single fold is unclear, but all of them infer protein structure from coevolved amino acid pairs. Here, we hypothesize that coevolutionary signatures are being missed. Suspecting that over-represented single-fold sequences may be masking these signatures, we developed an approach to search both highly diverse protein superfamilies-composed of single-fold and fold-switching variants-and protein subfamilies with more fold-switching variants. This approach successfully revealed coevolution of amino acid pairs uniquely corresponding to both conformations of 56/58 fold-switching proteins from distinct families. Then, using a set of coevolved amino acid pairs predicted by our approach, we successfully biased AlphaFold2 5 to predict two experimentally consistent conformations of a candidate protein with unsolved structure. The discovery of widespread dual-fold coevolution indicates that fold-switching sequences have been preserved by natural selection, implying that their functionalities provide evolutionary advantage and paving the way for predictions of diverse protein structures from single sequences.
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Affiliation(s)
- Joseph W. Schafer
- National Library of Medicine, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894, USA
| | - Lauren L. Porter
- National Library of Medicine, National Center for Biotechnology Information, National Institutes of Health, Bethesda, MD 20894, USA
- National Heart, Lung, and Blood Institute, Biochemistry and Biophysics Center, National Institutes of Health, Bethesda, MD 20892, USA
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16
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Cheng Z, Misra SK, Shami A, Sharp JS. Structural Analysis of Phosphorylation Proteoforms in a Dynamic Heterogeneous System Using Flash Oxidation Coupled In-Line with Ion Exchange Chromatography. Anal Chem 2022; 94:18017-18024. [PMID: 36512753 PMCID: PMC9912381 DOI: 10.1021/acs.analchem.2c04365] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Protein posttranslational modifications (PTMs) are key modulators of protein structure and function that often change in a dynamic fashion in response to cellular stimuli. Dynamic PTMs are very challenging to structurally characterize using modern techniques, including covalent labeling methods, due to the presence of multiple proteoforms and conformers together in solution. We have coupled an ion exchange high-performance liquid chromatography separation with a flash oxidation system [ion exchange chromatography liquid chromatography-flash oxidation (IEX LC-FOX)] to successfully elucidate structural changes among three phosphoproteoforms of ovalbumin (OVA) during dephosphorylation with alkaline phosphatase. Real-time dosimetry indicates no difference in the effective radical dose between peaks or across the peak, demonstrating both the lack of scavenging of the NaCl gradient and the lack of a concentration effect on radical dose between peaks of different intensities. The use of IEX LC-FOX allows us to structurally probe into each phosphoproteoform as it elutes from the column, capturing structural data before the dynamics of the system to reintroduce heterogeneity. We found significant differences in the residue-level oxidation between the hydroxyl radical footprint of nonphosphorylated, monophosphorylated, and diphosphorylated OVA. Not only were our data consistent with the previously reported stabilization of OVA structure by phosphorylation, but local structural changes were also consistent with the measured order of dephosphorylation of Ser344 being removed first. These results demonstrate the utility of IEX LC-FOX for measuring the structural effects of PTMs, even in dynamic systems.
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Affiliation(s)
- Zhi Cheng
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS 38677, United States
| | - Sandeep K. Misra
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS 38677, United States
| | - Anter Shami
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS 38677, United States
| | - Joshua S. Sharp
- Department of BioMolecular Sciences, University of Mississippi, Oxford, MS 38677, United States
- Department of Chemistry and Biochemistry, University of Mississippi, Oxford, MS 38677, United States
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17
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Spectroscopic Characterization of the Binding and Release of Hydrophilic, Hydrophobic and Amphiphilic Molecules from Ovalbumin Supramolecular Hydrogels. Gels 2022; 9:gels9010014. [PMID: 36661784 PMCID: PMC9857392 DOI: 10.3390/gels9010014] [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: 11/30/2022] [Revised: 12/15/2022] [Accepted: 12/23/2022] [Indexed: 12/28/2022] Open
Abstract
Protein-based hydrogels have attracted growing attention for pharmaceutical and biomedical applications. Ovalbumin (OVA), the hen egg white albumin, possessing good foaming and gelling properties and being widely used in the food industry, has recently been indicated as a potential pharmaceutical vehicle. In this study, the binding and release properties of pure OVA hydrogels were investigated by electron paramagnetic resonance (EPR) spin labeling. The comparative analysis between OVA and serum albumin (SA) hydrogels revealed the same release kinetics of hydrophilic 3-carbamoyl-proxyl and 3-carboxy-proxyl, suggesting the diffusion-dominated release of small probes from both hydrogel types. The results obtained with the amphiphilic 16-doxylstearate (16-DS) indicate that OVA, unlike SAs, does not possess a specific fatty acid binding site. However, the OVA hydrogels were able to accommodate a two-fold excess of 16-DS, resulting from protein thermally induced conformational changes, as confirmed by Raman spectroscopy. Similarly, the hydrophobic modified paullone ligand HL, which was initially free in the OVA solution, was bound in the hydrogel. The hydrogels were found to retain a significant amount of 16-DS and HL after 7-day dialysis in physiological saline. The observed facilitated binding of amphiphilic/hydrophobic molecules in OVA hydrogels compared to the solution, and their sustained release, demonstrate the applicability of OVA hydrogels in pharmaceutics.
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18
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Sarmah S, Hazarika U, Das SM, Quraishi S, Bhatta A, Belwal VK, Jha AN, Singha Roy A. Deciphering the interactions of phytochemicals with ovalbumin, the major food allergen from egg white: spectroscopic and computational studies. LUMINESCENCE 2022; 37:2105-2122. [PMID: 36271635 DOI: 10.1002/bio.4401] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 10/17/2022] [Accepted: 10/17/2022] [Indexed: 12/14/2022]
Abstract
Ovalbumin (OVA), the major component of egg white, has been used as a model carrier protein to study the interaction of four bioactive phytochemicals 6-hydroxyflavone, chrysin, naringin, and naringenin. A static quenching mechanism was primarily associated with the complexation of the flavonoids with OVA. Hydrophobic forces play a major part in the stability of the complexes. The structural changes within the protein in response to flavonoid binding revealed a decrease in OVA's α-helical content. The hypothesized binding site for flavonoids in OVA overlaps with one or more immunoglobulin E-binding epitopes that may have some effect in the immunoglobulin E response pathway. The flavonoids remain in the same binding site throughout the simulation time and impart protein stability by forming different noncovalent interactions. This study presents comprehensive information about the interaction of the flavonoids with OVA and the associated structural variations after the binding, which might help researchers better comprehend similar medication pharmacodynamics and provide critical information for future therapeutic development.
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Affiliation(s)
- Sharat Sarmah
- Department of Chemistry, National Institute of Technology, Shillong, Meghalaya, India
| | - Upasana Hazarika
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, India
| | - Sony Moni Das
- Department of Chemistry, National Institute of Technology, Shillong, Meghalaya, India
| | - Sana Quraishi
- Department of Chemistry, National Institute of Technology, Shillong, Meghalaya, India
| | - Anindita Bhatta
- Centre for Advanced Studies, Department of Chemistry, North-Eastern Hill University, Shillong, India
| | - Vinay Kumar Belwal
- Department of Bioscience and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, India
| | - Anupam Nath Jha
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, India
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology, Shillong, Meghalaya, India
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19
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Mijin N, Milošević J, Stevanović S, Petrović P, Lolić A, Urbic T, Polović N. Amyloid-like aggregation influenced by lead(II) and cadmium(II) ions in hen egg white ovalbumin. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2022.108292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Bravo-Pérez C, Toderici M, Chambers JE, Martínez-Menárguez JA, Garrido-Rodriguez P, Pérez-Sanchez H, de la Morena-Barrio B, Padilla J, Miñano A, Cifuentes-Riquelme R, Vicente V, Lozano ML, Marciniak SJ, de la Morena-Barrio ME, Corral J. Full-length antithrombin frameshift variant with aberrant C-terminus causes endoplasmic reticulum retention with a dominant-negative effect. JCI Insight 2022; 7:161430. [PMID: 36214221 PMCID: PMC9675572 DOI: 10.1172/jci.insight.161430] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 08/24/2022] [Indexed: 02/02/2023] Open
Abstract
Antithrombin, a major endogenous anticoagulant, is a serine protease inhibitor (serpin). We characterized the biological and clinical impact of variants involving C-terminal antithrombin. We performed comprehensive molecular, cellular, and clinical characterization of patients with C-terminal antithrombin variants from a cohort of 444 unrelated individuals with confirmed antithrombin deficiency. We identified 17 patients carrying 12 C-terminal variants, 5 of whom had the p.Arg445Serfs*17 deletion. Five missense variants caused qualitative deficiency, and 7, including 4 insertion-deletion variants, induced severe quantitative deficiency, particularly p.Arg445Serfs*17 (antithrombin <40%). This +1 frameshift variant had a molecular size similar to that of WT antithrombin but possessed a different C-terminus. Morphologic and cotransfection experiments showed that recombinant p.Arg445Serfs*17 was retained at the endoplasmic reticulum and had a dominant-negative effect on WT antithrombin. Characterization of different 1+ frameshift, aberrant C-terminal variants revealed that protein secretion was determined by frameshift site. The introduction of Pro441 in the aberrant C-terminus, shared by 5 efficiently secreted variants, partially rescued p.Arg445Serfs*17 secretion. C-terminal antithrombin mutants have notable heterogeneity, related to variant type and localization. Aberrant C-terminal variants caused by 1+ frameshift, with similar size as WT antithrombin, may be secreted or not, depending on frameshift site. The severe clinical phenotypes of these genetic changes are consistent with their dominant-negative effects.
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Affiliation(s)
- Carlos Bravo-Pérez
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Mara Toderici
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Joseph E. Chambers
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - José A. Martínez-Menárguez
- Department of Cell Biology and Histology, Medical School, Biomedical Research Institute of Murcia, University of Murcia, Campus Mare Nostrum, Murcia, Spain
| | - Pedro Garrido-Rodriguez
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Horacio Pérez-Sanchez
- Structural Bioinformatics and High Performance Computing Research Group, Universidad Católica de Murcia, Murcia, Spain
| | - Belén de la Morena-Barrio
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - José Padilla
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Antonia Miñano
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Rosa Cifuentes-Riquelme
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Vicente Vicente
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Maria L. Lozano
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Stefan J. Marciniak
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Maria Eugenia de la Morena-Barrio
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
| | - Javier Corral
- Servicio de Hematología y Oncología Médica, Hospital Universitario Morales Meseguer, Centro Regional de Hemodonación, University of Murcia, Biomedical Research Institute of Murcia, CB15/00055-CIBERER, Murcia, Spain
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21
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Itkonen J, Ghemtio L, Pellegrino D, Jokela (née Heinonen) PJ, Xhaard H, Casteleijn MG. Analysis of Biologics Molecular Descriptors towards Predictive Modelling for Protein Drug Development Using Time-Gated Raman Spectroscopy. Pharmaceutics 2022; 14:1639. [PMID: 36015265 PMCID: PMC9413954 DOI: 10.3390/pharmaceutics14081639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/29/2022] [Accepted: 08/03/2022] [Indexed: 11/16/2022] Open
Abstract
Pharmaceutical proteins, compared to small molecular weight drugs, are relatively fragile molecules, thus necessitating monitoring protein unfolding and aggregation during production and post-marketing. Currently, many analytical techniques take offline measurements, which cannot directly assess protein folding during production and unfolding during processing and storage. In addition, several orthogonal techniques are needed during production and market surveillance. In this study, we introduce the use of time-gated Raman spectroscopy to identify molecular descriptors of protein unfolding. Raman spectroscopy can measure the unfolding of proteins in-line and in real-time without labels. Using K-means clustering and PCA analysis, we could correlate local unfolding events with traditional analytical methods. This is the first step toward predictive modeling of unfolding events of proteins during production and storage.
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Affiliation(s)
- Jaakko Itkonen
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
| | - Leo Ghemtio
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
| | - Daniela Pellegrino
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
| | - Pia J. Jokela (née Heinonen)
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
- Orion Pharma, 02101 Espoo, Finland
| | - Henri Xhaard
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, 00100 Helsinki, Finland
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22
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De la Cruz-Torres LF, Rodríguez-Celestino V, Centeno-Leija S, Serrano-Posada H, Ceballos-Magaña SG, Aguilar-Padilla J, Mancilla-Margalli NA, Osuna-Castro JA. Development of a rapid, high-sensitivity, low-cost fluorescence method for protein surface hydrophobicity determination using a Nanodrop fluorospectrometer. Food Chem 2022; 396:133681. [PMID: 35853375 DOI: 10.1016/j.foodchem.2022.133681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 05/18/2022] [Accepted: 07/09/2022] [Indexed: 11/27/2022]
Abstract
A microvolumetric method for surface hydrophobicity (H0) determination of proteins using a Nanodrop fluorospectrometer was developed. This method reduces the protein and fluorophore quantities that are necessary for sample preparations and readings by two and three orders of magnitude, respectively, compared to conventional methods. In addition, readings can be obtained in just 2-6 s. Bovine serum albumin (BSA) and 1-anilino 8-naphthalene sulfonic acid (ANS) were used for the first optimization of appropriate fluorophore-protein conditions for H0 determination (20 μM ANS, 0.5-4 μM BSA, pH 5). Based on validation guidelines, the novel method shows linear behavior, good intraday precision, accuracy, and sensitivity. This method was robust against several factors, as determined by a Youden-Steiner test. Additional surface hydrophobicity determinations using several proteins demonstrate suitable method applicability. The present microvolumetric method provides a reliable technique to determine the H0 of proteins for pharmaceutical, biotechnological, and food applications.
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Affiliation(s)
- Luis Fernando De la Cruz-Torres
- Facultad de Ciencias Químicas, Universidad de Colima, Carr. Colima-Coquimatlán km. 9, C.P. 28400 Coquimatlán, Colima, Mexico; Facultad de Ciencias Biológicas y Agropecuarias, Universidad de Colima, Carr. Colima-Manzanillo km. 40, C.P. 28100 Tecomán, Colima, Mexico; Consejo Nacional de Ciencia y Tecnología, Laboratorio de Agrobiotecnología, Tecnoparque CLQ, Universidad de Colima, Carretera Los Limones-Loma de Juárez, C.P. 28629 Colima, Colima, Mexico
| | - Verónica Rodríguez-Celestino
- Facultad de Ciencias Biológicas y Agropecuarias, Universidad de Colima, Carr. Colima-Manzanillo km. 40, C.P. 28100 Tecomán, Colima, Mexico; Consejo Nacional de Ciencia y Tecnología, Laboratorio de Agrobiotecnología, Tecnoparque CLQ, Universidad de Colima, Carretera Los Limones-Loma de Juárez, C.P. 28629 Colima, Colima, Mexico; Centro Nacional de Referencia de Control Biológico, Carr. Tecomán-Estación FFCC km 1.5, Col. Tepeyac, C.P. 28110 Tecomán, Colima, Mexico
| | - Sara Centeno-Leija
- Consejo Nacional de Ciencia y Tecnología, Laboratorio de Agrobiotecnología, Tecnoparque CLQ, Universidad de Colima, Carretera Los Limones-Loma de Juárez, C.P. 28629 Colima, Colima, Mexico
| | - Hugo Serrano-Posada
- Consejo Nacional de Ciencia y Tecnología, Laboratorio de Agrobiotecnología, Tecnoparque CLQ, Universidad de Colima, Carretera Los Limones-Loma de Juárez, C.P. 28629 Colima, Colima, Mexico
| | - Silvia G Ceballos-Magaña
- Facultad de Ciencias, Universidad de Colima, c/ Bernal Díaz del Castillo 340, C.P. 28045 Colima, Colima, Mexico.
| | - Jorge Aguilar-Padilla
- Facultad de Ciencias Químicas, Universidad de Colima, Carr. Colima-Coquimatlán km. 9, C.P. 28400 Coquimatlán, Colima, Mexico; Facultad de Ciencias Biológicas y Agropecuarias, Universidad de Colima, Carr. Colima-Manzanillo km. 40, C.P. 28100 Tecomán, Colima, Mexico; Consejo Nacional de Ciencia y Tecnología, Laboratorio de Agrobiotecnología, Tecnoparque CLQ, Universidad de Colima, Carretera Los Limones-Loma de Juárez, C.P. 28629 Colima, Colima, Mexico
| | - Norma Alejandra Mancilla-Margalli
- Tecnológico Nacional de México, Instituto Tecnológico de Tlajomulco, Carr. a San Miguel Cuyutlán km. 10, Tlajomulco de Zúñiga, Jalisco C.P. 45650, Mexico
| | - Juan Alberto Osuna-Castro
- Facultad de Ciencias Biológicas y Agropecuarias, Universidad de Colima, Carr. Colima-Manzanillo km. 40, C.P. 28100 Tecomán, Colima, Mexico.
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23
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Wen H, Ning Z, Li J, Guan Y, Zhang B, Shang X, Liu X, Du Z, Liu J, Zhang T. Stability of oil-in-water emulsions improved by ovalbumin-procyanidins mixture: A promising substrate with emulsifying and antioxidant activity. Colloids Surf B Biointerfaces 2022; 215:112473. [PMID: 35367745 DOI: 10.1016/j.colsurfb.2022.112473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 01/24/2023]
Abstract
The aim of this study is to develop a dual-functional ingredient with antioxidant activity and emulsification. The emulsion stability of ovalbumin (OVA) was improved by procyanidins (PC). The interactions between OVA and PC were investigated using multi-spectroscopy and molecular docking. Furthermore, the effect of the addition of the OVA-PC mixture on emulsion stability was evaluated as well. The fluorescence results showed that the quenching mechanism of PC to OVA's endogenous fluorescence was static quenching, and the binding ratio of OVA and PC was 1:1. Circular dichroism (CD) and Fourier Transform Infrared Spectrometer (FT-IR) showed that the addition of PC promoted the unfolding of OVA, and transformed the secondary structure of OVA from α-helix to β-sheet. The main driving force of OVA and PC was hydrogen bonding, according to molecular docking analysis. Among all the samples, the stability of the emulsion of OVA-PC at a ratio of 1:30 exhibited extremely high stability and the smallest particle size. In comparison with individual OVA emulsions, the OVA-PC emulsions had excellent physical stabilities. Meanwhile, the oxidation degree of protein and oil for the OVA-PC emulsions was lower than that of the native OVA emulsion after 8-day storage. Our work provides important insights for understanding the interaction between OVA and expanding the application of OVA-PC.
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Affiliation(s)
- Hedi Wen
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Zhenzhen Ning
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Jinming Li
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Yu Guan
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Biying Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Xiaomin Shang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Xuanting Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Zhiyang Du
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China.
| | - Ting Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering, Jilin University, Changchun 130062, People's Republic of China.
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24
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Ma Z, Guo A, Jing P. Advances in dietary proteins binding with co-existed anthocyanins in foods: Driving forces, structure-affinity relationship, and functional and nutritional properties. Crit Rev Food Sci Nutr 2022; 63:10792-10813. [PMID: 35748363 DOI: 10.1080/10408398.2022.2086211] [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] [Indexed: 11/03/2022]
Abstract
Anthocyanins, which are the labile flavonoid pigments widely distributed in many fruits, vegetables, cereal grains, and flowers, are receiving intensive interest for their potential health benefits. Proteins are important food components from abundant sources and present high binding affinity for small dietary compounds, e.g., anthocyanins. Protein-anthocyanin interactions might occur during food processing, ingestion, digestion, and bioutilization, leading to significant changes in the structure and properties of proteins and anthocyanins. Current knowledge of protein-anthocyanin interactions and their contributions to functions and bioactivities of anthocyanin-containing foods were reviewed. Binding characterization of dietary protein-anthocyanins complexes is outlined. Advances in understanding the structure-affinity relationship of dietary protein-anthocyanin interaction are critically discussed. The associated properties of protein-anthocyanin complexes are considered in an evaluation of functional and nutritional values.
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Affiliation(s)
- Zhen Ma
- Shanghai Food Safety and Engineering Technology Research Center, Bor S. Luh Food Safety Research Center, Key Lab of Urban Agriculture (South), School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Anqi Guo
- Shanghai Food Safety and Engineering Technology Research Center, Bor S. Luh Food Safety Research Center, Key Lab of Urban Agriculture (South), School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai, China
| | - Pu Jing
- Shanghai Food Safety and Engineering Technology Research Center, Bor S. Luh Food Safety Research Center, Key Lab of Urban Agriculture (South), School of Agriculture & Biology, Shanghai Jiao Tong University, Shanghai, China
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25
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Indrischek H, Hammer J, Machate A, Hecker N, Kirilenko B, Roscito J, Hans S, Norden C, Brand M, Hiller M. Vision-related convergent gene losses reveal SERPINE3's unknown role in the eye. eLife 2022; 11:77999. [PMID: 35727138 PMCID: PMC9355568 DOI: 10.7554/elife.77999] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/20/2022] [Indexed: 11/30/2022] Open
Abstract
Despite decades of research, knowledge about the genes that are important for development and function of the mammalian eye and are involved in human eye disorders remains incomplete. During mammalian evolution, mammals that naturally exhibit poor vision or regressive eye phenotypes have independently lost many eye-related genes. This provides an opportunity to predict novel eye-related genes based on specific evolutionary gene loss signatures. Building on these observations, we performed a genome-wide screen across 49 mammals for functionally uncharacterized genes that are preferentially lost in species exhibiting lower visual acuity values. The screen uncovered several genes, including SERPINE3, a putative serine proteinase inhibitor. A detailed investigation of 381 additional mammals revealed that SERPINE3 is independently lost in 18 lineages that typically do not primarily rely on vision, predicting a vision-related function for this gene. To test this, we show that SERPINE3 has the highest expression in eyes of zebrafish and mouse. In the zebrafish retina, serpine3 is expressed in Müller glia cells, a cell type essential for survival and maintenance of the retina. A CRISPR-mediated knockout of serpine3 in zebrafish resulted in alterations in eye shape and defects in retinal layering. Furthermore, two human polymorphisms that are in linkage with SERPINE3 are associated with eye-related traits. Together, these results suggest that SERPINE3 has a role in vertebrate eyes. More generally, by integrating comparative genomics with experiments in model organisms, we show that screens for specific phenotype-associated gene signatures can predict functions of uncharacterized genes.
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Affiliation(s)
- Henrike Indrischek
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Juliane Hammer
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
| | - Anja Machate
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
| | - Nikolai Hecker
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | | | - Juliana Roscito
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Stefan Hans
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
| | - Caren Norden
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Michael Brand
- Center for Regenerative Therapies Dresden, TU Dresden, Dresden, Germany
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26
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A comparative study of unpasteurized and pasteurized frozen whole hen eggs using size-exclusion chromatography and small-angle X-ray scattering. Sci Rep 2022; 12:9218. [PMID: 35654960 PMCID: PMC9163139 DOI: 10.1038/s41598-022-12885-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 05/18/2022] [Indexed: 11/08/2022] Open
Abstract
Hen eggs are rich in proteins and are an important source of protein for humans. Pasteurized frozen whole hen eggs are widely used in cooking and confectionery and can be stored for long periods. However, processed eggs differ from raw eggs in properties such as viscosity, foaming ability, and thermal aggregation. To develop pasteurized frozen whole egg products with properties similar to those of unpasteurized whole eggs, it is necessary to establish a method that can differentiate between the two egg types with respect to the structures of their proteins. In this study, size-exclusion chromatography (SEC) and SEC coupled with small-angle X-ray scattering (SEC-SAXS) were successfully used to differentiate between the proteins in unpasteurized and pasteurized frozen whole eggs. We found that proteins in the plasma fraction of egg yolk, especially apovitellenins I and II, formed large aggregates in the pasteurized eggs, indicating that their structures are sensitive to temperature changes during pasteurization, freezing, and thawing. The results suggest that SEC and SEC-SAXS can be used to differentiate between unpasteurized and pasteurized frozen whole eggs. Additionally, they may be useful in determining molecular sizes and shapes of multiple components in various complex biological systems such as whole eggs.
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27
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Niu F, Zhang B, Du Y, Hu D, Ma S, Feng ZJ, Zhang Y, Pan W. Effect of microcrystalline cellulose under different hydrolysis durations on the stability of thyme oil emulsion. J Food Sci 2022; 87:2707-2717. [PMID: 35490350 DOI: 10.1111/1750-3841.16154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/10/2022] [Accepted: 03/23/2022] [Indexed: 11/27/2022]
Abstract
The thyme oil emulsion was prepared using a novel type of nanocellulose obtained under different hydrolysis durations. The effect of different cellulose structures on interfacial adsorption properties of emulsion and loading efficiency of thyme oil were analyzed. The results showed that the cellulose particles became more homogeneous and hydrophilic after hydrolysis duration for 10 h. The loading efficiency of thyme oil for all emulsions reached about 80%. The retention rate of thyme oil decreased during the storage period, and rising temperatures will exacerbate the loss of thyme oil. Compared to Hd2, emulsions stabilized by Hd10 exhibited better stability and higher retention at all storage conditions. Cellulose emulsion can increase the dispersion and improve the stability of thyme oil. A smaller cellulose particle could make the emulsion become more stable. The experimental results confirmed that cellulose can be used as a stabilizer to encapsulate and transport hydrophobic active ingredient. PRACTICAL APPLICATION: The study results demonstrated that the emulsion transport system was developed using cellulose nanoparticles prepared by hydrolysis. The system can be used to load hydrophobic active substances (active peptides, curcumin, β-carotene, essential oils, etc.). It can protect the active substance from environmental damage, enhance water solubility and stability, and improve the bioavailability of the active substance.
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Affiliation(s)
- Fuge Niu
- Food Safety Key Lab of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China.,Anhui Rongda Poultry Development Co., Ltd, Xuancheng, China
| | - Bin Zhang
- Food Safety Key Lab of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Yixuan Du
- Food Safety Key Lab of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Demei Hu
- Food Safety Key Lab of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Shuang Ma
- Food Safety Key Lab of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
| | - Zhi-Juan Feng
- Institute of Vegetables, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yating Zhang
- School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Weichun Pan
- Food Safety Key Lab of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, China
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28
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Fu HJ, Su R, Luo L, Chen ZJ, Sørensen TJ, Hildebrandt N, Xu ZL. Rapid and Wash-Free Time-Gated FRET Histamine Assays Using Antibodies and Aptamers. ACS Sens 2022; 7:1113-1121. [PMID: 35312279 DOI: 10.1021/acssensors.2c00085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
Histamine (HA) is an indicator of food freshness and quality. However, high concentrations of HA can cause food poisoning. Simple, rapid, sensitive, and specific quantification can enable efficient screening of HA in food and beverages. However, conventional assays are complicated and time-consuming, as they require multiple incubation, washing, and separation steps. Here, we demonstrate that time-gated Förster resonance energy transfer (TG-FRET) between terbium (Tb) complexes and organic dyes can be implemented in both immunosensors and aptasensors for simple HA quantification using a rapid, single-step, mix-and-measure assay format. Both biosensors could quantify HA at concentrations relevant in food poisoning with limits of detection of 0.19 μg/mL and 0.03 μg/mL, respectively. Excellent specificity was documented against the structurally similar food components tryptamine and l-histidine. Direct applicability of the TG-FRET assays was demonstrated by quantifying HA in spiked fish and wine samples with both excellent concentration recovery and agreement with conventional multistep enzyme-linked immunosorbent assays (ELISAs). Our results show that the simplicity and rapidity of TG-FRET assays do not compromise sensitivity, specificity, and reliability, and both immunosensors and aptasensors have a strong potential for their implementation in advanced food safety screening.
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Affiliation(s)
- Hui-Jun Fu
- nanoFRET.com, Laboratoire COBRA (Chimie Organique, Bioorganique, Réactivité et Analyse - UMR6014 & FR3038), Université de Rouen Normandie, CNRS, INSA, Normandie Université, 76000 Rouen, France
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Ruifang Su
- nanoFRET.com, Laboratoire COBRA (Chimie Organique, Bioorganique, Réactivité et Analyse - UMR6014 & FR3038), Université de Rouen Normandie, CNRS, INSA, Normandie Université, 76000 Rouen, France
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Zi-Jian Chen
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
| | - Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
| | - Niko Hildebrandt
- nanoFRET.com, Laboratoire COBRA (Chimie Organique, Bioorganique, Réactivité et Analyse - UMR6014 & FR3038), Université de Rouen Normandie, CNRS, INSA, Normandie Université, 76000 Rouen, France
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
- Université Paris-Saclay, 91405 Orsay, France
| | - Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety/Guangdong Laboratory of Lingnan Modern Agriculture, South China Agricultural University, Guangzhou 510642, China
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29
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Agalya P, Pires de Oliveira I, Lescano C, Caires A, Velusamy V. Effect of pH and cosolvent sucralose on the solvation profile of ovalbumin: Ultrasonic and molecular simulation studies. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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30
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Visentini FF, Perez AA, Santiago LG. Bioactive compounds: Application of albumin nanocarriers as delivery systems. Crit Rev Food Sci Nutr 2022; 63:7238-7268. [PMID: 35238254 DOI: 10.1080/10408398.2022.2045471] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Enriched products with bioactive compounds (BCs) show the capacity to produce a wide range of possible health effects. Most BCs are essentially hydrophobic and sensitive to environmental factors; so, encapsulation becomes a strategy to solve these problems. Many globular proteins have the intrinsic ability to bind, protect, encapsulate, and introduce BCs into nutraceutical or pharmaceutical matrices. Among them, albumins as human serum albumin (HSA), bovine serum albumin (BSA), ovalbumin (OVA) and α-lactalbumin (ALA) are widely abundant, available, and applied in many industrial sectors, becoming promissory materials to encapsulate BCs. Therefore, this review focuses on researches about the main groups of natural origin BCs (namely phenolic compounds, lipids, vitamins, and carotenoids), the different types of nanostructures based on albumins to encapsulate them and the main fields of application for BCs-loaded albumin systems. In this context, phenolic compounds (catechins, quercetin, and chrysin) are the most extensively BCs studied and encapsulated in albumin-based nanocarriers. Other extensively studied subgroups are stilbenes and curcuminoids. Regarding lipids and vitamins; terpenes, carotenoids (β-carotene), and xanthophylls (astaxanthin) are the most considered. The main application areas of BCs are related to their antitumor, anti-inflammatory, and antioxidant properties. Finally, BSA is the most used albumin to produced BCs-loaded nanocarriers.
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Affiliation(s)
- Flavia F Visentini
- Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina, CONICET
- Área de Biocoloides y Nanotecnología, Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Adrián A Perez
- Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina, CONICET
- Área de Biocoloides y Nanotecnología, Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Liliana G Santiago
- Área de Biocoloides y Nanotecnología, Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Santa Fe, Argentina
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31
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Leite Milião G, Souza Soares LD, Balbino DF, Almeida Alves Barbosa ÉD, Bressan GC, Carvalho Teixeira AVND, dos Reis Coimbra JS, Oliveira EBD. pH influence on the mechanisms of interaction between chitosan and ovalbumin: a multi-spectroscopic approach. Food Hydrocoll 2022. [DOI: 10.1016/j.foodhyd.2021.107137] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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32
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Wang C, Zhang W, Tian R, Zhang J, Zhang L, Deng Z, Lv X, Li J, Liu L, Du G, Liu Y. Model‐driven design of synthetic N‐terminal coding sequences for regulating gene expression in yeast and bacteria. Biotechnol J 2022; 17:e2100655. [DOI: 10.1002/biot.202100655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 01/12/2022] [Accepted: 01/13/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Chenyun Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Wei Zhang
- School of Artificial Intelligence and Computer Science Jiangnan University Wuxi 214122 China
- Jiangsu Key Laboratory of Media Design and Software Technology Wuxi 214122 China
| | - Rongzhen Tian
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Jianing Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Linpei Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
| | - Zhaohong Deng
- School of Artificial Intelligence and Computer Science Jiangnan University Wuxi 214122 China
- Jiangsu Key Laboratory of Media Design and Software Technology Wuxi 214122 China
| | - Xueqin Lv
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Jianghua Li
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Long Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Guocheng Du
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
| | - Yanfeng Liu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology Jiangnan University Wuxi 214122 China
- Science Center for Future Foods Jiangnan University Wuxi 214122 China
- Engineering Research Center of Ministry of Education on Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Jiangsu Province Engineering Research Center of Food Synthetic Biotechnology Jiangnan University Wuxi 214122 China
- Qingdao Special Food Research Institute Wuxi 214122 China
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33
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Lou H, Hageman MJ. Investigating protein diffusivities in diluted hyaluronic acid solutions using dynamic light scattering. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:241-249. [PMID: 35005754 DOI: 10.1039/d1ay01832a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study aimed to investigate the diffusivities of lysozyme (LYS), ovalbumin (OVA), and hyaluronic acid (HA) in buffered solvents using dynamic light scattering (DLS). For protein/solvent and HA/solvent binary systems, the diffusion coefficients of protein or HA were obtained from autocorrelation function (ACF) curve fitting. Whereas, for protein/HA/solvent ternary systems, the two eigenvalues of the mutual diffusion coefficient matrix were obtained from ACF curve fitting. The results of binary systems showed that at low ionic strength, the diffusion coefficients of protein and HA increased linearly with concentration; at high ionic strength, the diffusion coefficients of OVA and LYS were independent on protein concentration; for HA, the positive linear relationship between diffusion coefficient and concentration existed at high and low ionic strengths, but the slope at high ionic strength was smaller compared to that at low ionic strength. For OVA/HA/solvent ternary systems, the sum of two eigenvalues (D1DLS + D2DLS) was slightly smaller compared to (DOVA + DHA), where DOVA and DHA were the diffusion coefficients in their binary systems. On the contrary, for LYS/HA/solvent ternary systems, (D1DLS + D2DLS) were significantly smaller than (DLYS + DHA) and the diffusion coefficients in binary and ternary systems exhibited an opposite trend with respect to ionic strength change. The DLS and MD simulation results indicated strong attractive intermolecular interaction existed between LYS and HA molecules, especially at low ionic strength. By using DLS, it was possible to characterize the diffusion coefficients of diluted protein/HA binary and ternary systems.
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Affiliation(s)
- Hao Lou
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, 66047, USA.
- Biopharmaceutical Innovation and Optimization Center, University of Kansas, Lawrence, KS, 66047, USA
| | - Michael J Hageman
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence, KS, 66047, USA.
- Biopharmaceutical Innovation and Optimization Center, University of Kansas, Lawrence, KS, 66047, USA
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34
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Müller WA, Sarkis JR, Marczak LDF, Muniz AR. Molecular dynamics study of the effects of static and oscillating electric fields in ovalbumin. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2021.102911] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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rDromaserpin: A Novel Anti-Hemostatic Serpin, from the Salivary Glands of the Hard Tick Hyalomma dromedarii. Toxins (Basel) 2021; 13:toxins13120913. [PMID: 34941750 PMCID: PMC8703697 DOI: 10.3390/toxins13120913] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/01/2021] [Accepted: 12/08/2021] [Indexed: 01/17/2023] Open
Abstract
Hemostatic disorders are caused either by platelet-related dysfunctions, defective blood coagulation, or by a combination of both, leading to an increased susceptibility to cardiovascular diseases (CVD) and other related illnesses. The unique specificity of anticoagulants from hematophagous arthropods, such as ticks, suggests that tick saliva holds great promise for discovering new treatments for these life-threatening diseases. In this study, we combined in silico and in vitro analyses to characterize the first recombinant serpin, herein called Dromaserpin, from the sialotranscriptome of the Hyalomma dromedarii tick. Our in silico data described Dromaserpin as a secreted protein of ~43 kDa with high similarities to previously characterized inhibitory serpins. The recombinant protein (rDromaserpin) was obtained as a well-structured monomer, which was tested using global blood coagulation and platelet aggregation assays. With this approach, we confirmed rDromaserpin anticoagulant activity as it significantly delayed plasma clotting in activated partial thromboplastin time and thrombin time assays. The profiling of proteolytic activity shows its capacity to inhibit thrombin in the micromolar range (0.2 to 1 μM) and in the presence of heparin this inhibition was clearly increased. It was also able to inhibit Kallikrein, FXIa and slightly FXIIa, with no significant effect on other factors. In addition, the rDromaserpin inhibited thrombin-induced platelet aggregation. Taken together, our data suggest that rDromaserpin deserves to be further investigated as a potential candidate for developing therapeutic compounds targeting disorders related to blood clotting and/or platelet aggregation.
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36
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Hornok V. Serum Albumin Nanoparticles: Problems and Prospects. Polymers (Basel) 2021; 13:3759. [PMID: 34771316 PMCID: PMC8586933 DOI: 10.3390/polym13213759] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/20/2021] [Accepted: 10/27/2021] [Indexed: 12/20/2022] Open
Abstract
The present paper aims to summarize the results regarding serum albumin-based nanoparticles (NPs) for drug delivery purposes. In particular, it focuses on the relationship between their preparation techniques and synthesis parameters, as well as their successful clinical application. In spite of the huge amount of consumed material and immaterial sources and promising possibilities, products made from different types of albumin NPs, with the exception of a few, still have not been invented. In the present paper, promising applications of serum albumin nanoparticles (SANPs) for different biomedical purposes, such as carriers, delivery systems and contrast agents, are also discussed. The most frequent utilization of the NPs for certain diseases, i.e., cancer therapy, and future prospects are also detailed in this study.
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Affiliation(s)
- Viktória Hornok
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich B. Square 1, H-6720 Szeged, Hungary; ; Tel.: +36-62-544211
- MTA Premium Post Doctoral Research Program, Rerrich B. Square 1, H-6720 Szeged, Hungary
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37
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Mishra S, Looger LL, Porter LL. A sequence-based method for predicting extant fold switchers that undergo α-helix ↔ β-strand transitions. Biopolymers 2021; 112:e23471. [PMID: 34498740 PMCID: PMC8545793 DOI: 10.1002/bip.23471] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 08/10/2021] [Accepted: 08/10/2021] [Indexed: 12/21/2022]
Abstract
Extant fold‐switching proteins remodel their secondary structures and change their functions in response to cellular stimuli, regulating biological processes and affecting human health. Despite their biological importance, these proteins remain understudied. Predictive methods are needed to expedite the process of discovering and characterizing more of these shapeshifting proteins. Most previous approaches require a solved structure or all‐atom simulations, greatly constraining their use. Here, we propose a high‐throughput sequence‐based method for predicting extant fold switchers that transition from α‐helix in one conformation to β‐strand in the other. This method leverages two previous observations: (a) α‐helix ↔ β‐strand prediction discrepancies from JPred4 are a robust predictor of fold switching, and (b) the fold‐switching regions (FSRs) of some extant fold switchers have different secondary structure propensities when expressed by themselves (isolated FSRs) than when expressed within the context of their parent protein (contextualized FSRs). Combining these two observations, we ran JPred4 on 99‐fold‐switching proteins and found strong correspondence between predicted and experimentally observed α‐helix ↔ β‐strand discrepancies. To test the overall robustness of this finding, we randomly selected regions of proteins not expected to switch folds (single‐fold proteins) and found significantly fewer predicted α‐helix ↔ β‐strand discrepancies. Combining these discrepancies with the overall percentage of predicted secondary structure, we developed a classifier to identify extant fold switchers (Matthews correlation coefficient of .71). Although this classifier had a high false‐negative rate (7/17), its false‐positive rate was very low (2/136), suggesting that it can be used to predict a subset of extant fold switchers from a multitude of available genomic sequences.
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Affiliation(s)
- Soumya Mishra
- National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA.,Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, Virginia, USA
| | - Loren L Looger
- Howard Hughes Medical Institute, Janelia Research Campus, Ashburn, Virginia, USA
| | - Lauren L Porter
- National Library of Medicine, National Institutes of Health, Bethesda, Maryland, USA.,National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
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38
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Moss DL, Mettu RR, Landry SJ. The Serpin-like Loop Insertion of Ovalbumin Increases the Stability and Decreases the OVA 323-339 Epitope Processing Efficiency. Biochemistry 2021; 60:1578-1586. [PMID: 33956428 PMCID: PMC8253479 DOI: 10.1021/acs.biochem.1c00095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Chicken ovalbumin (cOVA) has been studied for decades primarily due to the robust genetic and molecular resources that are available for experimental investigations. cOVA is a member of the serpin superfamily of proteins that function as protease inhibitors, although cOVA does not exhibit this activity. As a serpin, cOVA possesses a protease-sensitive reactive center loop that lies adjacent to the OVA 323-339 CD4+ T-cell epitope. We took advantage of the previously described single-substitution variant, OVA R339T, which can undergo the dramatic structural transition observed in serpins, to study how changes in loop size and protein stability influence the processing and presentation of the OVA 323-339 epitope. We observed that the OVA R339T loop insertion increases the stability and protease resistance, resulting in the reduced presentation of the OVA 323-339 epitope in vitro. These findings have implications for the design of more effective vaccines for the treatment of infectious diseases and cancer as well as the development of more robust CD4+ T-cell epitope prediction tools.
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Affiliation(s)
- Daniel L Moss
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, Louisiana 70112, United States
| | - Ramgopal R Mettu
- Department of Computer Science, Tulane University, 6823 St Charles Avenue, New Orleans, Louisiana 70118, United States
| | - Samuel J Landry
- Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, 1430 Tulane Avenue, New Orleans, Louisiana 70112, United States
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39
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Hales JE, Aoudjane S, Aeppli G, Dalby PA. Proof-of-concept analytical instrument for label-free optical deconvolution of protein species in a mixture. J Chromatogr A 2021; 1641:461968. [PMID: 33611116 DOI: 10.1016/j.chroma.2021.461968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/18/2021] [Accepted: 02/01/2021] [Indexed: 11/27/2022]
Abstract
The adoption of process analytical technologies by the biopharmaceutical industry can reduce the cost of therapeutic drugs and facilitate investigation of new bioprocesses. Control of critical process parameters to retain critical product quality attributes within strict bounds is important for ensuring a consistently high product quality, but developing the sophisticated analytical technologies required has proven to be a major challenge. Here, we demonstrate a new optical technique for continuous monitoring of protein species as they are eluted from a chromatographic column, even when they fully co-elute with other protein species, without making any assumption about or peak-fitting to the elution profile. To achieve this, we designed and constructed a time-resolved intrinsic fluorescence lifetime chromatograph, and established an analytical framework for deconvolving and quantifying distinct but co-eluting protein species in real time. This proof-of-concept technology has potentially useful applications as a process analytical technology and more generally as an analytical technique for label-free quantification of proteins in mixtures.
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Affiliation(s)
- John E Hales
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London, WC1E 6BT, UK.
| | - Samir Aoudjane
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London, WC1E 6BT, UK
| | - Gabriel Aeppli
- London Centre for Nanotechnology, 17-19 Gordon Street, London, WC1H 0AH, UK
| | - Paul A Dalby
- Department of Biochemical Engineering, University College London, Bernard Katz Building, Gower Street, London, WC1E 6BT, UK.
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40
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Are Physicochemical Properties Shaping the Allergenic Potency of Animal Allergens? Clin Rev Allergy Immunol 2021; 62:1-36. [DOI: 10.1007/s12016-020-08826-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 12/31/2022]
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41
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Farjami T, Babaei J, Nau F, Dupont D, Madadlou A. Effects of thermal, non-thermal and emulsification processes on the gastrointestinal digestibility of egg white proteins. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2020.11.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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42
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Sumita A, Shoba G, Thamarai Selvan R, Anju K, Balakumaran MD, Kumaran R. Photophysical and molecular docking studies of photoinduced electron transfer (PET) and non-PET based fluorophores of acridinedione derivatives with a glycoprotein: Ovalbumin. RESULTS IN CHEMISTRY 2021. [DOI: 10.1016/j.rechem.2021.100187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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43
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Xu YT, Yang T, Liu LL, Tang CH. One-step fabrication of multifunctional high internal phase pickering emulsion gels solely stabilized by a softer globular protein nanoparticle: S-Ovalbumin. J Colloid Interface Sci 2020; 580:515-527. [DOI: 10.1016/j.jcis.2020.07.054] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 07/05/2020] [Accepted: 07/11/2020] [Indexed: 01/04/2023]
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44
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Kaarmukhilnilavan RS, Selvam A, Wong JW, Murugesan K. Ca2+ dependent flocculation efficiency of avian egg protein revealed unique surface specific interaction with kaolin particles: A new perception in bioflocculant research. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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45
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Dai C, Lin Z, Agarwal K, Mikhael C, Aich A, Gupta K, Cho JH. Self-Assembled 3D Nanosplit Rings for Plasmon-Enhanced Optofluidic Sensing. NANO LETTERS 2020; 20:6697-6705. [PMID: 32808792 DOI: 10.1021/acs.nanolett.0c02575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Plasmonic sensors are commonly defined on two-dimensional (2D) surfaces with an enhanced electromagnetic field only near the surface, which requires precise positioning of the targeted molecules within hotspots. To address this challenge, we realize segmented nanocylinders that incorporate plasmonic (1-50 nm) gaps within three-dimensional (3D) nanostructures (nanocylinders) using electron irradiation triggered self-assembly. The 3D structures allow desired plasmonic patterns on their inner cylindrical walls forming the nanofluidic channels. The nanocylinders bridge nanoplasmonics and nanofluidics by achieving electromagnetic field enhancement and fluid confinement simultaneously. This hybrid system enables rapid diffusion of targeted species to the larger spatial hotspots in the 3D plasmonic structures, leading to enhanced interactions that contribute to a higher sensitivity. This concept has been demonstrated by characterizing an optical response of the 3D plasmonic nanostructures using surface-enhanced Raman spectroscopy (SERS), which shows enhancement over a 22 times higher intensity for hemoglobin fingerprints with nanocylinders compared to 2D nanostructures.
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Affiliation(s)
- Chunhui Dai
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Zihao Lin
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kriti Agarwal
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Carol Mikhael
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Anupam Aich
- Hematology/Oncology Division, Department of Medicine, University of California, Irvine, California 92697, United States
| | - Kalpna Gupta
- Hematology/Oncology Division, Department of Medicine, University of California, Irvine, California 92697, United States
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, Minnesota 55455, United States
- SCIRE, Veterans Affairs Medical Center, Long Beach, California 90822, United States
| | - Jeong-Hyun Cho
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
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46
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Kumar A, Suryadevara NC, Wolf KJ, Wilson JT, Di Paolo RJ, Brien JD, Joyce S. Heterotypic immunity against vaccinia virus in an HLA-B*07:02 transgenic mousepox infection model. Sci Rep 2020; 10:13167. [PMID: 32759969 PMCID: PMC7406653 DOI: 10.1038/s41598-020-69897-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Accepted: 07/13/2020] [Indexed: 12/25/2022] Open
Abstract
Vaccination with vaccinia virus (VACV) elicits heterotypic immunity to smallpox, monkeypox, and mousepox, the mechanistic basis for which is poorly understood. It is generally assumed that heterotypic immunity arises from the presentation of a wide array of VACV-derived, CD8+ T cell epitopes that share homology with other poxviruses. Herein this assumption was tested using a large panel of VACV-derived peptides presented by HLA-B*07:02 (B7.2) molecules in a mousepox/ectromelia virus (ECTV)-infection, B7.2 transgenic mouse model. Most dominant epitopes recognized by ECTV- and VACV-reactive CD8+ T cells overlapped significantly without altering immunodominance hierarchy. Further, several epitopes recognized by ECTV-reactive CD8+ T cells were not recognized by VACV-reactive CD8+ T cells, and vice versa. In one instance, the lack of recognition owed to a N72K variation in the ECTV C4R70–78 variant of the dominant VACV B8R70–78 epitope. C4R70–78 does not bind to B7.2 and, hence, it was neither immunogenic nor antigenic. These findings provide a mechanistic basis for VACV vaccination-induced heterotypic immunity which can protect against Variola and Monkeypox disease. The understanding of how cross-reactive responses develop is essential for the rational design of a subunit-based vaccine that would be safe, and effectively protect against heterologous infection.
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Affiliation(s)
- Amrendra Kumar
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Centre, Nashville, TN, USA
| | - Naveen Chandra Suryadevara
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA.,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Centre, Nashville, TN, USA
| | - Kyle J Wolf
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - John T Wilson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, TN, USA
| | - Richard J Di Paolo
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - James D Brien
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO, USA
| | - Sebastian Joyce
- Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, TN, USA. .,Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Centre, Nashville, TN, USA.
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47
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Tan A, Suzuki R, Yokoyama C, Yano S, Konno H. Antimicrobial activity and secondary structure of a novel peptide derived from ovalbumin. J Pept Sci 2020; 26:e3276. [DOI: 10.1002/psc.3276] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 07/10/2020] [Accepted: 07/14/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Ao Tan
- Department of Biochemical Engineering, Graduate School of Science and EngineeringYamagata University Yonezawa Japan
| | - Rio Suzuki
- Department of Biochemical Engineering, Graduate School of Science and EngineeringYamagata University Yonezawa Japan
| | - Chikako Yokoyama
- Department of Biochemical Engineering, Graduate School of Science and EngineeringYamagata University Yonezawa Japan
| | - Shigekazu Yano
- Department of Biochemical Engineering, Graduate School of Science and EngineeringYamagata University Yonezawa Japan
| | - Hiroyuki Konno
- Department of Biochemical Engineering, Graduate School of Science and EngineeringYamagata University Yonezawa Japan
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48
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Mechanism of heat-induced gelation for ovalbumin under acidic conditions and the effect of peptides. Polym J 2020. [DOI: 10.1038/s41428-020-0382-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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49
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Milošević MM, Milanović M, Stijepović I, Srdić VV, Antov MG. Evaluation of mesoporous silica and Nb-doped titanate as molecule carriers through adsorption/desorption study. PARTICULATE SCIENCE AND TECHNOLOGY 2020. [DOI: 10.1080/02726351.2019.1573866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Maja M. Milošević
- Department of Applied and Engineering Chemistry, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Marija Milanović
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Ivan Stijepović
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Vladimir V. Srdić
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
| | - Mirjana G. Antov
- Department of Applied and Engineering Chemistry, Faculty of Technology, University of Novi Sad, Novi Sad, Serbia
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50
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Aristova D, Volynets G, Chernii S, Losytskyy M, Balanda A, Slominskii Y, Mokhir A, Yarmoluk S, Kovalska V. Far-red pentamethine cyanine dyes as fluorescent probes for the detection of serum albumins. ROYAL SOCIETY OPEN SCIENCE 2020; 7:200453. [PMID: 32874638 PMCID: PMC7428273 DOI: 10.1098/rsos.200453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/21/2020] [Indexed: 06/11/2023]
Abstract
Benzothiazole based cyanine dyes with bridged groups in the pentamethine chain were studied as potential far-red fluorescent probes for protein detection. Spectral-luminescent properties were characterized for unbound dyes and in the presence of serum albumins (bovine (BSA), human (HSA), equine (ESA)), and globular proteins (β-lactoglobulin, ovalbumin). We have observed that the addition of albumins leads to a significant increase in dyes fluorescence intensity. However, the fluorescent response of dyes in the presence of other globular proteins was notably lower. The value of fluorescence quantum yield for dye bearing a sulfonate group complexed with HSA amounted to 42% compared with 0.2% for the free dye. The detection limit of HSA by this dye was greater than 0.004 mg ml-1 which indicates the high sensitivity of dye to low HSA concentrations. Modelling of structure of the dyes complexes with albumin molecules was performed by molecular docking. According to these data, dyes could bind to up to five sites on the HSA molecule; the most preferable are the haemin-binding site in subdomain IB and the dye-binding site in the pocket between subdomains IA, IIA and IIIA. This work confirms that pentamethine cyanine dyes could be proposed as powerful far-red fluorescent probes applicable for highly sensitive detection of albumins.
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Affiliation(s)
- D. Aristova
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - G. Volynets
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - S. Chernii
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - M. Losytskyy
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - A. Balanda
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - Yu. Slominskii
- Institute of Organic Chemistry NASU, 5 Murmans'ka Street, 02094 Kyiv, Ukraine
| | - A. Mokhir
- Organic Chemistry II, Friedrich-Alexander-University of Erlangen-Nuremberg, Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - S. Yarmoluk
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
| | - V. Kovalska
- Institute of Molecular Biology and Genetics NASU, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
- Scientific Services Company Otava Ltd, 150 Zabolotnogo Street, 03143 Kyiv, Ukraine
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