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Sisnande T, Brum FL, Matias DO, de Sá Ribeiro F, Moulin TB, Mohana-Borges R, de Magalhães MTQ, Lima LMTR. Spatially resolved distribution of pancreatic hormones proteoforms by MALDI-imaging mass spectrometry. Anal Biochem 2024; 692:115570. [PMID: 38763320 DOI: 10.1016/j.ab.2024.115570] [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: 11/07/2023] [Revised: 05/09/2024] [Accepted: 05/13/2024] [Indexed: 05/21/2024]
Abstract
Zinc plays a crucial role both in the immune system and endocrine processes. Zinc restriction in the diet has been shown to lead to degeneration of the endocrine pancreas, resulting in hormonal imbalance within the β-cells. Proteostasismay vary depending on the stage of a pathophysiological process, which underscores the need for tools aimed at directly analyzing biological status. Among proteomics methods, MALDI-ToF-MS can serve as a rapid peptidomics tool for analyzing extracts or by histological imaging. Here we report the optimization of MALDI imaging mass spectrometry analysis of histological thin sections from mouse pancreas. This optimization enables the identification of the major islet peptide hormones as well as the major accumulated precursors and/or proteolytic products of peptide hormones. Cross-validation of the identified peptide hormones was performed by LC-ESI-MS from pancreatic islet extracts. Mice subjected to a zinc-restricted diet exhibited a relatively lower amount of peptide intermediates compared to the control group. These findings provide evidence for a complex modulation of proteostasis by micronutrients imbalance, a phenomenon directly accessed by MALDI-MSI.
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Affiliation(s)
- Tháyna Sisnande
- Laboratório de Biotecnologia Farmacêutica (pbiotech), Faculdade de Farmácia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil; Programa de Pós-Graduação Em Química Biológica, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Felipe Lopes Brum
- Laboratório de Biotecnologia e Bioengenharia Estrutural (LABGENEST), Instituto de Biofísica Carlos Chagas Filho (IBCCF), Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Daiane O Matias
- Laboratório de Biotecnologia Farmacêutica (pbiotech), Faculdade de Farmácia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil; Programa de Pós-Graduação Em Química Biológica, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Fernando de Sá Ribeiro
- Laboratório de Biotecnologia Farmacêutica (pbiotech), Faculdade de Farmácia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil; Programa de Pós-Graduação Em Química Biológica, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Thayana Beninatto Moulin
- Laboratório de Biotecnologia Farmacêutica (pbiotech), Faculdade de Farmácia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Ronaldo Mohana-Borges
- Laboratório de Biotecnologia e Bioengenharia Estrutural (LABGENEST), Instituto de Biofísica Carlos Chagas Filho (IBCCF), Rio de Janeiro, RJ, 21941-902, Brazil; Centro de Espectrometria de Massa de Biomoléculas (CEMBIO), Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
| | - Mariana T Q de Magalhães
- Laboratório de Biofísica de Macromoléculas (LBM), Instituto de Ciências Biomédicas (ICB), Universidade Federal de Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.
| | - Luís Maurício T R Lima
- Laboratório de Biotecnologia Farmacêutica (pbiotech), Faculdade de Farmácia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil; Programa de Pós-Graduação Em Química Biológica, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil; Programa de Pós-Graduação Em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, RJ, 21941-902, Brazil.
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Silva-Jr H, Araújo TS, da Silva Almeida M, Scapin SMN, Lima LMTR. Formation of subvisible particles in commercial insulin formulations. Colloids Surf B Biointerfaces 2022; 216:112566. [PMID: 35623256 DOI: 10.1016/j.colsurfb.2022.112566] [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: 12/18/2021] [Revised: 05/08/2022] [Accepted: 05/10/2022] [Indexed: 12/01/2022]
Abstract
The conformation and assembly of insulin are sensitive to physical and chemical variables. Insulin can misfold and form both amorphous and amyloid aggregates. Localized cutaneous amyloidosis due to insulin usage has been reported, and question remains regarding its stability in the original flasks due to storage and handling. Here we report the evaluation of the formation of aggregates in insulin formulations upon once-weekly handling and storage of the in-use cartridges at 4 °C or 37 °C for 5 weeks. Electrospray ionization mass spectrometry showed no obvious chemical decomposition. No major changes in oligomeric distribution were observed by size-exclusion chromatography. Dynamic light scattering allowed the identification of particles with high hydrodynamic radius formed during storage at 4 °C and 37 °C. Transmission electron microscopy analysis revealed the formation of amorphous material, with no clear evidence for amyloid material up to 28 days of incubation. These data support evidences for the formation of subvisible and submicrometer amorphous particulate matter in insulin formulations shortly upon use.
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Affiliation(s)
- Hamilton Silva-Jr
- Laboratory for Pharmaceutical Biotechnology - pbiotech, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil.
| | - Talita S Araújo
- Laboratory for Pharmaceutical Biotechnology - pbiotech, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil; Protein Advanced Biochemistry - PAB, National Center for Structural Biology and Bioimaging - CENABIO, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil.
| | - Marcius da Silva Almeida
- Protein Advanced Biochemistry - PAB, National Center for Structural Biology and Bioimaging - CENABIO, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil; Institute for Medical Biochemistry Leopoldo De Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil.
| | - Sandra M N Scapin
- National Institute of Metrology, Quality and Technology - INMETRO, Duque de Caxias, RJ 25250-020, Brazil.
| | - Luís Maurício T R Lima
- Laboratory for Pharmaceutical Biotechnology - pbiotech, Faculty of Pharmacy, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21941-902, Brazil; National Institute of Metrology, Quality and Technology - INMETRO, Duque de Caxias, RJ 25250-020, Brazil.
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Demelenne A, Napp A, Bouillenne F, Crommen J, Servais AC, Fillet M. Insulin aggregation assessment by capillary gel electrophoresis without sodium dodecyl sulfate: Comparison with size-exclusion chromatography. Talanta 2019; 199:457-463. [DOI: 10.1016/j.talanta.2019.02.074] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 02/16/2019] [Accepted: 02/20/2019] [Indexed: 01/24/2023]
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Martin EM, Kondrat FDL, Stewart AJ, Scrivens JH, Sadler PJ, Blindauer CA. Native electrospray mass spectrometry approaches to probe the interaction between zinc and an anti-angiogenic peptide from histidine-rich glycoprotein. Sci Rep 2018; 8:8646. [PMID: 29872214 PMCID: PMC5988744 DOI: 10.1038/s41598-018-26924-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/17/2018] [Indexed: 12/11/2022] Open
Abstract
Zinc modulates the biological function of histidine-rich glycoprotein (HRG) through binding to its His-rich region (HRR). The Zn2+-binding properties of a 35 amino-acid biologically-active peptide mimic of the HRR, HRGP330, were investigated using dissociative mass spectrometry approaches in addition to travelling-wave ion mobility mass spectrometry (TWIM-MS). Native mass spectrometry confirmed zinc binding to HRGP330; however, broadening of the 1H NMR resonances upon addition of Zn2+ ions precluded the attainment of structural information. A complementary approach employing TWIM-MS indicated that HRGP330 has a more compact structure in the presence of Zn2+ ions. Top-down MS/MS data supported a metal-binding-induced conformational change, as fewer fragments were observed for Zn2+-bound HRGP330. Zn2+-bound fragments of both N-terminal and C-terminal ends of the peptide were identified from collision-induced dissociation (CID) and electron transfer dissociation/proton transfer reaction (ETD/PTR) experiments, suggesting that multiple binding sites exist within this region of HRG. The combination of mass spectrometry and NMR approaches provides new insight into the highly dynamic interaction between zinc and this His-rich peptide.
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Affiliation(s)
- Esther M Martin
- Department of Chemistry, University of Warwick, Coventry, UK
- Medimmune, Cambridge, UK
| | - Frances D L Kondrat
- School of Life Sciences, University of Warwick, Coventry, UK
- Immunocore Ltd, Abingdon, UK
| | - Alan J Stewart
- School of Medicine, University of St Andrews, St Andrews, UK
| | - James H Scrivens
- School of Life Sciences, University of Warwick, Coventry, UK
- School of Science, Engineering and Design, Teeside University, Middlesbrough, UK
| | - Peter J Sadler
- Department of Chemistry, University of Warwick, Coventry, UK
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