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van Hengel CDN, van Adrichem KE, Jansen TLC. Simulation of two-dimensional infrared Raman spectroscopy with application to proteins. J Chem Phys 2023; 158:064106. [PMID: 36792507 DOI: 10.1063/5.0138958] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Two-dimensional infrared Raman spectroscopy is a powerful technique for studying the structure and interaction in molecular and biological systems. Here, we present a new implementation of the simulation of the two-dimensional infrared Raman signals. The implementation builds on the numerical integration of the Schrödinger equation approach. It combines the prediction of dynamics from molecular dynamics with a map-based approach for obtaining Hamiltonian trajectories and response function calculations. The new implementation is tested on the amide-I region for two proteins, where one is dominated by α-helices and the other by β-sheets. We find that the predicted spectra agree well with experimental observations. We further find that the two-dimensional infrared Raman spectra at least of the studied proteins are much less sensitive to the laser polarization used compared to conventional two-dimensional infrared experiments. The present implementation and findings pave the way for future applications for the interpretation of two-dimensional infrared Raman spectra.
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Affiliation(s)
- Carleen D N van Hengel
- University of Groningen, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Kim E van Adrichem
- University of Groningen, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Thomas L C Jansen
- University of Groningen, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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2
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Fu Y, Yu J, Li F, Ge S. Oncometabolites drive tumorigenesis by enhancing protein acylation: from chromosomal remodelling to nonhistone modification. J Exp Clin Cancer Res 2022; 41:144. [PMID: 35428309 PMCID: PMC9013066 DOI: 10.1186/s13046-022-02338-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Accepted: 03/21/2022] [Indexed: 02/02/2023] Open
Abstract
AbstractMetabolites are intermediate products of cellular metabolism catalysed by various enzymes. Metabolic remodelling, as a biochemical fingerprint of cancer cells, causes abnormal metabolite accumulation. These metabolites mainly generate energy or serve as signal transduction mediators via noncovalent interactions. After the development of highly sensitive mass spectrometry technology, various metabolites were shown to covalently modify proteins via forms of lysine acylation, including lysine acetylation, crotonylation, lactylation, succinylation, propionylation, butyrylation, malonylation, glutarylation, 2-hydroxyisobutyrylation and β-hydroxybutyrylation. These modifications can regulate gene expression and intracellular signalling pathways, highlighting the extensive roles of metabolites. Lysine acetylation is not discussed in detail in this review since it has been broadly investigated. We focus on the nine aforementioned novel lysine acylations beyond acetylation, which can be classified into two categories: histone acylations and nonhistone acylations. We summarize the characteristics and common functions of these acylation types and, most importantly, provide a glimpse into their fine-tuned control of tumorigenesis and potential value in tumour diagnosis, monitoring and therapy.
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Cervantes-Jiménez R, Sánchez-Segura L, Estrada-Martínez LE, Topete-Camacho A, Mendiola-Olaya E, Rosas-Escareño AN, Saldaña-Gutiérrez C, Figueroa-Cabañas ME, Dena-Beltrán JL, Kuri-García A, Blanco-Labra A, García-Gasca T. Quantum Dot Labelling of Tepary Bean ( Phaseolus acutifolius) Lectins by Microfluidics. Molecules 2020; 25:E1041. [PMID: 32110921 PMCID: PMC7179211 DOI: 10.3390/molecules25051041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/03/2020] [Accepted: 02/13/2020] [Indexed: 11/16/2022] Open
Abstract
Lectins are bioactive proteins with the ability to recognize cell membrane carbohydrates in a specific way. Diverse plant lectins have shown diagnostic and therapeutic potential against cancer, and their cytotoxicity against transformed cells is mediated through the induction of apoptosis. Previous works have determined the cytotoxic activity of a Tepary bean (Phaseolus acutifolius) lectin fraction (TBLF) and its anti-tumorigenic effect on colon cancer. In this work, lectins from the TBLF were additionally purified by ionic-exchange chromatography. Two peaks with agglutination activity were obtained: one of them was named TBL-IE2 and showed a single protein band in two-dimensional electrophoresis; this one was thus selected for coupling to quantum dot (QD) nanoparticles by microfluidics (TBL-IE2-QD). The microfluidic method led to low sample usage, and resulted in homogeneous complexes, whose visualization was achieved using multiphoton and transmission electron microscopy. The average particle size (380 nm) and the average zeta potential (-18.51 mV) were determined. The cytotoxicity of the TBL-IE2 and TBL-IE2-QD was assayed on HT-29 colon cancer cells, showing no differences between them (p ≤ 0.05), where the LC50 values were 1.0 × 10-3 and 1.7 × 10-3 mg/mL, respectively. The microfluidic technique allowed control of the coupling between the QD and the protein, substantially improving the labelling process, providing a rapid and efficient method that enabled the traceability of lectins. Future studies will focus on the potential use of the QD-labelled lectin to recognize tumor tissues.
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Affiliation(s)
- Ricardo Cervantes-Jiménez
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
| | - Lino Sánchez-Segura
- Departamento de Ingeniería Genética, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Guanajuato CP 36821, Mexico;
| | - Laura Elena Estrada-Martínez
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
| | - Antonio Topete-Camacho
- Departamento de Fisiología, Centro de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara CP 44340, Mexico; (A.T.-C.); (A.N.R.-E.)
| | - Elizabeth Mendiola-Olaya
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Guanajuato CP 36821, Mexico;
| | - Abraham Noé Rosas-Escareño
- Departamento de Fisiología, Centro de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara CP 44340, Mexico; (A.T.-C.); (A.N.R.-E.)
| | - Carlos Saldaña-Gutiérrez
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
| | - Mónica Eugenia Figueroa-Cabañas
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
| | - José Luis Dena-Beltrán
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
| | - Aarón Kuri-García
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
| | - Alejandro Blanco-Labra
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Unidad Irapuato, Guanajuato CP 36821, Mexico;
| | - Teresa García-Gasca
- Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Av. de las Ciencias s/n, Juriquilla, Querétaro CP 76230, Mexico; (R.C.-J.); (L.E.E.-M.); (C.S.-G.); (M.E.F.-C.); (J.L.D.-B.); (A.K.-G.)
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4
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Rao E, Foderà V, Leone M, Vetri V. Direct observation of alpha-lactalbumin, adsorption and incorporation into lipid membrane and formation of lipid/protein hybrid structures. Biochim Biophys Acta Gen Subj 2019; 1863:784-794. [PMID: 30742952 DOI: 10.1016/j.bbagen.2019.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 02/06/2019] [Accepted: 02/07/2019] [Indexed: 02/02/2023]
Abstract
The interaction between proteins and membranes is of great interest in biomedical and biotechnological research for its implication in many functional and dysfunctional processes. We present an experimental study on the interaction between model membranes and alpha-lactalbumin (α-La). α-La is widely studied for both its biological function and its anti-tumoral properties. We use advanced fluorescence microscopy and spectroscopy techniques to characterize α-La-membrane mechanisms of interaction and α-La-induced modifications of membranes when insertion of partially disordered regions of protein chains in the lipid bilayer is favored. Moreover, using fluorescence lifetime imaging, we are able to distinguish between protein adsorption and insertion in the membranes. Our results indicate that, upon addition of α-La to giant vesicles samples, protein is inserted into the lipid bilayer with rates that are concentration-dependent. The formation of heterogeneous hybrid protein-lipid co-aggregates, paralleled with protein conformational and structural changes, alters the membrane structure and morphology, leading to an increase in membrane fluidity.
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Affiliation(s)
- Estella Rao
- Dipartimento di Fisica e Chimica, Università di Palermo, 90128 Palermo, Italy
| | - Vito Foderà
- Department of Pharmacy, Universitetsparken 2, University of Copenhagen, 2100 Copenhagen, Denmark
| | - Maurizio Leone
- Dipartimento di Fisica e Chimica, Università di Palermo, 90128 Palermo, Italy
| | - Valeria Vetri
- Dipartimento di Fisica e Chimica, Università di Palermo, 90128 Palermo, Italy.
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5
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Khan JM, Khan MR, Sen P, Malik A, Irfan M, Khan RH. An intermittent amyloid phase found in gemini (G5 and G6) surfactant induced β-sheet to α-helix transition in concanavalin A protein. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.092] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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6
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Khan JM, Khan MS, Qadeer A, Alsenaidy MA, Ahmed A, Al-Shabib NA, Khan RH. Cationic gemini surfactant (16-4-16) interact electrostatically with anionic plant lectin and facilitates amyloid fibril formation at neutral pH. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2017.03.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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7
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Khan JM, Khan MS, Ali MS, Al-Shabib NA, Khan RH. Cetyltrimethylammonium bromide (CTAB) promote amyloid fibril formation in carbohydrate binding protein (concanavalin A) at physiological pH. RSC Adv 2016. [DOI: 10.1039/c6ra03707k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Low concentration of CTAB provoked cross β-sheet formation whereas high concentrations of CTAB direct to alpha helix induction in Con A.
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Affiliation(s)
- Javed Masood Khan
- Department of Food Science and Nutrition
- Faculty of Food and Agricultural Sciences
- King Saud University
- 2460 Riyadh 11451
- Saudi Arabia
| | - Mohd Shahnawaz Khan
- Protein Research Chair
- Department of Biochemistry
- College of Science
- King Saud University
- Riyadh
| | - Mohd Sajid Ali
- Department of Chemistry
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - Nasser Abdulatif Al-Shabib
- Department of Food Science and Nutrition
- Faculty of Food and Agricultural Sciences
- King Saud University
- 2460 Riyadh 11451
- Saudi Arabia
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit
- Aligarh Muslim University
- Aligarh
- India
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8
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The route to protein aggregate superstructures: Particulates and amyloid-like spherulites. FEBS Lett 2015; 589:2448-63. [DOI: 10.1016/j.febslet.2015.07.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/02/2015] [Accepted: 07/06/2015] [Indexed: 12/15/2022]
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9
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Gibson GE, Xu H, Chen HL, Chen W, Denton TT, Zhang S. Alpha-ketoglutarate dehydrogenase complex-dependent succinylation of proteins in neurons and neuronal cell lines. J Neurochem 2015; 134:86-96. [PMID: 25772995 DOI: 10.1111/jnc.13096] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 02/13/2015] [Accepted: 03/04/2015] [Indexed: 01/13/2023]
Abstract
Reversible post-translation modifications of proteins are common in all cells and appear to regulate many processes. Nevertheless, the enzyme(s) responsible for the alterations and the significance of the modification are largely unknown. Succinylation of proteins occurs and causes large changes in the structure of proteins; however, the source of the succinyl groups, the targets, and the consequences of these modifications on other proteins remain unknown. These studies focused on succinylation of mitochondrial proteins. The results demonstrate that the α-ketoglutarate dehydrogenase complex (KGDHC) can serve as a trans-succinylase that mediates succinylation in an α-ketoglutarate-dependent manner. Inhibition of KGDHC reduced succinylation of both cytosolic and mitochondrial proteins in cultured neurons and in a neuronal cell line. Purified KGDHC can succinylate multiple proteins including other enzymes of the tricarboxylic acid cycle leading to modification of their activity. Inhibition of KGDHC also modifies acetylation by modifying the pyruvate dehydrogenase complex. The much greater effectiveness of KGDHC than succinyl-CoA suggests that the catalysis owing to the E2k succinyltransferase is important. Succinylation appears to be a major signaling system and it can be mediated by KGDHC. Reversible post-translation modifications of proteins are common and may regulate many processes. Succinylation of proteins occurs and causes large changes in the structure of proteins. However, the source of the succinyl groups, the targets, and the consequences of these modifications on other proteins remains unknown. The results demonstrate that the mitochondrial α-ketoglutarate dehydrogenase complex (KGDHC) can succinylate multiple mitochondrial proteins and alter their function. Succinylation appears to be a major signaling system and it can be mediated by KGDHC.
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Affiliation(s)
- Gary E Gibson
- Brain and Mind Research Institute, Weill Cornell Medical College, Burke Medical Research Institute, White Plains, New York, USA
| | - Hui Xu
- Brain and Mind Research Institute, Weill Cornell Medical College, Burke Medical Research Institute, White Plains, New York, USA
| | - Huan-Lian Chen
- Brain and Mind Research Institute, Weill Cornell Medical College, Burke Medical Research Institute, White Plains, New York, USA
| | - Wei Chen
- Proteomics and Mass Spectrometry Facility, Institute of Biotechnology, Cornell University, Ithaca, New York, USA
| | - Travis T Denton
- College of Pharmacy, Washington State University, Spokane, Washington, USA
| | - Sheng Zhang
- Proteomics and Mass Spectrometry Facility, Institute of Biotechnology, Cornell University, Ithaca, New York, USA
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10
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Librizzi F, Carrotta R, Spigolon D, Bulone D, San Biagio PL. α-Casein Inhibits Insulin Amyloid Formation by Preventing the Onset of Secondary Nucleation Processes. J Phys Chem Lett 2014; 5:3043-3048. [PMID: 26278257 DOI: 10.1021/jz501570m] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
α-Casein is known to inhibit the aggregation of several proteins, including the amyloid β-peptide, by mechanisms that are not yet completely clear. We studied its effects on insulin, a system extensively used to investigate the properties of amyloids, many of which are common to all proteins and peptides. In particular, as for other proteins, insulin aggregation is affected by secondary nucleation pathways. We found that α-casein strongly delays insulin amyloid formation, even at extremely low doses, when the aggregation process is characterized by secondary nucleation. At difference, it has a vanishing inhibitory effect on the initial oligomer formation, which is observed at high concentration and does not involve any secondary nucleation pathway. These results indicate that an efficient inhibition of amyloid formation can be achieved by chaperone-like systems, by sequestering the early aggregates, before they can trigger the exponential proliferation brought about by secondary nucleation mechanisms.
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Affiliation(s)
- Fabio Librizzi
- Institute of Biophysics, UOS Palermo, National Research Council, Via Ugo La Malfa 153, Palermo 90146, Italy
| | - Rita Carrotta
- Institute of Biophysics, UOS Palermo, National Research Council, Via Ugo La Malfa 153, Palermo 90146, Italy
| | - Dario Spigolon
- Institute of Biophysics, UOS Palermo, National Research Council, Via Ugo La Malfa 153, Palermo 90146, Italy
| | - Donatella Bulone
- Institute of Biophysics, UOS Palermo, National Research Council, Via Ugo La Malfa 153, Palermo 90146, Italy
| | - Pier Luigi San Biagio
- Institute of Biophysics, UOS Palermo, National Research Council, Via Ugo La Malfa 153, Palermo 90146, Italy
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11
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Navarra G, Tinti A, Di Foggia M, Leone M, Militello V, Torreggiani A. Metal ions modulate thermal aggregation of beta-lactoglobulin: A joint chemical and physical characterization. J Inorg Biochem 2014; 137:64-73. [DOI: 10.1016/j.jinorgbio.2014.04.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 04/02/2014] [Accepted: 04/02/2014] [Indexed: 10/25/2022]
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12
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Pielesz A, Paluch J. Fucoidan as an inhibitor of thermally induced collagen glycation examined by acetate electrophoresis. Electrophoresis 2014; 35:2237-44. [PMID: 24853731 DOI: 10.1002/elps.201400178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 04/30/2014] [Accepted: 05/14/2014] [Indexed: 12/15/2022]
Abstract
Non-enzymatic glycation (Maillard reaction) in vitro could be a simple method to obtain glycoconjugates for studying their biological properties. Hence, fucoidan was retained by acetate electrophoresis indicating a strong interaction with the protein. A loss of colour in fucoidan bands was found for samples incubated with collagen as compared with samples of free fucoidan. Also under in vitro conditions at 100°C - simulating a sudden burn incident - fucoidan binds with collagen as a result of the Maillard reaction. In contrast, the colour of the fucoidan bands intensified for samples incubated with collagen, with the addition of glucose. Electrophoretic analyses were carried out after heating the samples to a temperature simulating a burn incident. The bands were found to intensify for samples incubated with collagen during a 30-day-long incubation. Thus, spontaneous in vitro glycation - i.e. without the addition of glucose - was confirmed. This process is highly intensified both by the temperature and time of incubation. For a sample incubated in vitro in a fucoidan solution containing glucose, glycation was confirmed in a preliminary FTIR and acetate electrophoresis examinations, occurring in collagen obtained from chicken skins. In particular, a new band emerging around 1746 cm(-1) was observed for above samples, as was its increasing intensity, as compared with samples without the addition of glucose. In the collagen glycation assay, while glucose reacts with collagen and forms cross-linked aggregates, fucoidan decreases the process of aggregation and recovery of native collagen.
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Affiliation(s)
- Anna Pielesz
- Faculty of Materials and Environment Sciences, University of Bielsko-Biała, Bielsko-Biała, Poland
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13
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Vetri V, Leone M, Morozova-Roche LA, Vestergaard B, Foderà V. Unlocked concanavalin A forms amyloid-like fibrils from coagulation of long-lived "crinkled" intermediates. PLoS One 2013; 8:e68912. [PMID: 23874809 PMCID: PMC3712988 DOI: 10.1371/journal.pone.0068912] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 06/06/2013] [Indexed: 01/14/2023] Open
Abstract
Understanding the early events during amyloid aggregation processes is crucial to single out the involved molecular mechanisms and for designing ad hoc strategies to prevent and reverse amyloidogenic disorders. Here, we show that, in conditions in which the protein is positively charged and its conformational flexibility is enhanced, Concanavalin A leads to fibril formation via a non-conventional aggregation pathway. Using a combination of light scattering, circular dichroism, small angle X-ray scattering, intrinsic (Tryptophan) and extrinsic (ANS) fluorescence and confocal and 2-photon fluorescence microscopy we characterize the aggregation process as a function of the temperature. We highlight a multi-step pathway with the formation of an on-pathway long-lived intermediate and a subsequent coagulation of such “crinkled” precursors into amyloid-like fibrils. The process results in a temperature-dependent aggregation-coagulation pathway, with the late phase of coagulation determined by the interplay between hydrophobic and electrostatic forces. Our data provide evidence for the complex aggregation pathway for a protein with a highly flexible native conformation. We demonstrate the possibility to generate a long-lived intermediate whose proportion and occurrence are easily tunable by experimental parameters (i.e. temperature). As a consequence, in the case of aggregation processes developing through well-defined energy barriers, our results can open the way to new strategies to induce more stable in vitro on-pathway intermediate species through a minute change in the initial conformational flexibility of the protein. This will allow isolating and experimentally studying such transient species, often indicated as relevant in neurodegenerative diseases, both in terms of structural and cytotoxic properties.
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Affiliation(s)
- Valeria Vetri
- Dipartimento di Fisica e Chimica, Università di Palermo, Palermo, Italy
- * E-mail: (VV); (VF)
| | - Maurizio Leone
- Dipartimento di Fisica e Chimica, Università di Palermo, Palermo, Italy
| | | | - Bente Vestergaard
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Vito Foderà
- Department of Drug Design and Pharmacology, University of Copenhagen, Copenhagen, Denmark
- Sector of Biological and Soft Systems, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
- * E-mail: (VV); (VF)
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14
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Carrotta R, Vilasi S, Librizzi F, Martorana V, Bulone D, San Biagio PL. α-Casein inhibition mechanism in concanavalin A aggregation process. J Phys Chem B 2012; 116:14700-7. [PMID: 23171317 DOI: 10.1021/jp307417x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The inhibition of the aggregation in protein solutions is currently a subject of great interest in many research fields, from the study of protein-misfolding related diseases to pharmaceutics, biotechnology, and food science. α(s1)-Casein, one of the four types of caseins, which are the largest protein component of bovine milk, has been found to hinder the aggregation process of several proteins, including the amyloid β-peptide, involved in Alzheimer's disease. To shed light into the mechanisms by which casein exerts this chaperon-like protective action, we studied its effect on the different steps of the aggregation process of concanavalin A, by means of both static and dynamic light scattering, thioflavin T and ANS fluorescence, circular dichroism, and atomic force microscopy. Our results show that casein has a poor effect on the first step of the process leading to the formation of amyloid-like structures. On the contrary, it has a marked effect on the second step of the process, ascribable to clusters condensation and compaction, up to the formation of very large aggregates. Such an effect requires a molar ratio of casein larger than that necessary to inhibit the fibrillogenesis of the amyloid β-peptide, thus, suggesting a different mechanism of interaction of casein, depending on both conformational properties and relative size of the aggregating molecules.
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Affiliation(s)
- Rita Carrotta
- Institute of Biophysics, The National Research Council, Via Ugo La Malfa 153, 90146 Palermo, Italy.
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15
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Guo J, Yang XQ, Gu W, Yuan DB, Wang JM, Wu NN. Inhibition of glycinin thermal aggregation by an artificial chaperone sodium dodecyl sulphate. Int J Food Sci Technol 2012. [DOI: 10.1111/j.1365-2621.2011.02891.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Vetri V, Ossato G, Militello V, Digman MA, Leone M, Gratton E. Fluctuation methods to study protein aggregation in live cells: concanavalin A oligomers formation. Biophys J 2011; 100:774-783. [PMID: 21281593 DOI: 10.1016/j.bpj.2010.11.089] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 11/19/2010] [Accepted: 11/29/2010] [Indexed: 11/18/2022] Open
Abstract
Prefibrillar oligomers of proteins are suspected to be the primary pathogenic agents in several neurodegenerative diseases. A key approach for elucidating the pathogenic mechanisms is to probe the existence of oligomers directly in living cells. In this work, we were able to monitor the process of aggregation of Concanavalin A in live cells. We used number and brightness analysis, two-color cross number and brightness analysis, and Raster image correlation spectroscopy to obtain the number of molecules, aggregation state, and diffusion coefficient as a function of time and cell location. We observed that binding of Concanavalin A to the membrane and the formation of small aggregates paralleled cell morphology changes, indicating progressive cell compaction and death. Upon protein aggregation, we observed increased membrane water penetration as reported by Laurdan generalized polarization imaging.
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Affiliation(s)
- V Vetri
- Dipartimento di Scienze Fisiche ed Astronomiche, University of Palermo, Palermo, Italy
| | - G Ossato
- Laboratory for Fluorescence Dynamics, University of California, Irvine, California
| | - V Militello
- Dipartimento di Scienze Fisiche ed Astronomiche, University of Palermo, Palermo, Italy
| | - M A Digman
- Laboratory for Fluorescence Dynamics, University of California, Irvine, California
| | - M Leone
- Dipartimento di Scienze Fisiche ed Astronomiche, University of Palermo, Palermo, Italy
| | - E Gratton
- Laboratory for Fluorescence Dynamics, University of California, Irvine, California.
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17
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Wang SSS, Hung YT, Wen WS, Lin KC, Chen GY. Exploring the inhibitory activity of short-chain phospholipids against amyloid fibrillogenesis of hen egg-white lysozyme. Biochim Biophys Acta Mol Cell Biol Lipids 2011; 1811:301-13. [DOI: 10.1016/j.bbalip.2011.02.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2010] [Revised: 01/22/2011] [Accepted: 02/04/2011] [Indexed: 01/27/2023]
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18
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Vetri V, D’Amico M, Foderà V, Leone M, Ponzoni A, Sberveglieri G, Militello V. Bovine Serum Albumin protofibril-like aggregates formation: Solo but not simple mechanism. Arch Biochem Biophys 2011; 508:13-24. [DOI: 10.1016/j.abb.2011.01.024] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 01/31/2011] [Accepted: 01/31/2011] [Indexed: 11/29/2022]
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Carrotta R, Vetri V, Librizzi F, Martorana V, Militello V, Leone M. Amyloid Fibrils Formation of Concanavalin A at Basic pH. J Phys Chem B 2011; 115:2691-8. [DOI: 10.1021/jp1042409] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- R. Carrotta
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
| | - V. Vetri
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
- Dipartimento di Scienze Fisiche e Astronomiche, Università di Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - F. Librizzi
- Dipartimento di Scienze Fisiche e Astronomiche, Università di Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - V. Martorana
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
| | - V. Militello
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
- Dipartimento di Scienze Fisiche e Astronomiche, Università di Palermo, Via Archirafi 36, 90123 Palermo, Italy
| | - M. Leone
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Via Ugo La Malfa 153, 90146 Palermo, Italy
- Dipartimento di Scienze Fisiche e Astronomiche, Università di Palermo, Via Archirafi 36, 90123 Palermo, Italy
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Rondeau P, Navarra G, Cacciabaudo F, Leone M, Bourdon E, Militello V. Thermal aggregation of glycated bovine serum albumin. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2010; 1804:789-98. [PMID: 20006741 DOI: 10.1016/j.bbapap.2009.12.003] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Revised: 11/23/2009] [Accepted: 12/05/2009] [Indexed: 12/20/2022]
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21
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Concanavalin A aggregation and toxicity on cell cultures. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2010; 1804:173-83. [DOI: 10.1016/j.bbapap.2009.09.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2009] [Revised: 09/03/2009] [Accepted: 09/13/2009] [Indexed: 11/23/2022]
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22
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Olsen SN, Andersen KB, Randolph TW, Carpenter JF, Westh P. Role of electrostatic repulsion on colloidal stability of Bacillus halmapalus alpha-amylase. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2009; 1794:1058-65. [DOI: 10.1016/j.bbapap.2009.02.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2008] [Revised: 02/15/2009] [Accepted: 02/18/2009] [Indexed: 11/17/2022]
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