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Reich N, Parkin E, Dawson N. Liposome nanoparticle conjugation and cell penetrating peptide sequences (CPPs) enhance the cellular delivery of the tau aggregation inhibitor RI-AG03. J Cell Mol Med 2024; 28:e18477. [PMID: 38853458 PMCID: PMC11163028 DOI: 10.1111/jcmm.18477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 05/23/2024] [Accepted: 05/26/2024] [Indexed: 06/11/2024] Open
Abstract
Given the pathological role of Tau aggregation in Alzheimer's disease (AD), our laboratory previously developed the novel Tau aggregation inhibitor peptide, RI-AG03. As Tau aggregates accumulate intracellularly, it is essential that the peptide can traverse the cell membrane. Here we examine the cellular uptake and intracellular trafficking of RI-AG03, in both a free and liposome-conjugated form. We also characterize the impact of adding the cell-penetrating peptide (CPP) sequences, polyarginine (polyR) or transactivator of transcription (TAT), to RI-AG03. Our data show that liposome conjugation of CPP containing RI-AG03 peptides, with either the polyR or TAT sequence, increased cellular liposome association three-fold. Inhibition of macropinocytosis modestly reduced the uptake of unconjugated and RI-AG03-polyR-linked liposomes, while having no effect on RI-AG03-TAT-conjugated liposome uptake. Further supporting macropinocytosis-mediated internalization, a 'fair' co-localisation of the free and liposome-conjugated RI-AG03-polyR peptide with macropinosomes and lysosomes was observed. Interestingly, we also demonstrate that RI-AG03-polyR detaches from liposomes following cellular uptake, thereby largely evading organellar entrapment. Collectively, our data indicate that direct membrane penetration and macropinocytosis are key routes for the internalization of liposomes conjugated with CPP containing RI-AG03. Our study also demonstrates that peptide-liposomes are suitable nanocarriers for the cellular delivery of RI-AG03, furthering their potential use in targeting Tau pathology in AD.
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Affiliation(s)
- Niklas Reich
- Division of Biomedical and Life Sciences, Faculty of Health and MedicineLancaster UniversityLancasterUK
| | - Edward Parkin
- Division of Biomedical and Life Sciences, Faculty of Health and MedicineLancaster UniversityLancasterUK
| | - Neil Dawson
- Division of Biomedical and Life Sciences, Faculty of Health and MedicineLancaster UniversityLancasterUK
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Goldlust K, Couturier A, Terradot L, Lesterlin C. Live-Cell Visualization of DNA Transfer and Pilus Dynamics During Bacterial Conjugation. Methods Mol Biol 2022; 2476:63-74. [PMID: 35635697 DOI: 10.1007/978-1-0716-2221-6_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bacterial genomes are highly plastic and evolve rapidly by acquiring new genetic information through horizontal gene transfer mechanisms. Capturing DNA transfer by conjugation between bacterial cells in real time is relevant to address bacterial genomes' dynamic architecture comprehensively. Here, we describe a method allowing the direct visualization of bacterial conjugation in live cells, including the fluorescent labeling of the conjugative pilus and the monitoring of plasmid DNA transfer from donor to recipient cells.
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Affiliation(s)
- Kelly Goldlust
- Microbiologie Moléculaire et Biochimie Structurale (MMSB), Université Lyon 1, CNRS, Inserm, UMR5086, Lyon Cedex 07, France
| | - Agathe Couturier
- Microbiologie Moléculaire et Biochimie Structurale (MMSB), Université Lyon 1, CNRS, Inserm, UMR5086, Lyon Cedex 07, France
| | - Laurent Terradot
- Microbiologie Moléculaire et Biochimie Structurale (MMSB), Université Lyon 1, CNRS, Inserm, UMR5086, Lyon Cedex 07, France
| | - Christian Lesterlin
- Microbiologie Moléculaire et Biochimie Structurale (MMSB), Université Lyon 1, CNRS, Inserm, UMR5086, Lyon Cedex 07, France.
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Healey RD, Wojciechowski JP, Monserrat-Martinez A, Tan SL, Marquis CP, Sierecki E, Gambin Y, Finch AM, Thordarson P. Design, Synthesis, and Evaluation of N- and C-Terminal Protein Bioconjugates as G Protein-Coupled Receptor Agonists. Bioconjug Chem 2018; 29:403-409. [PMID: 29328675 DOI: 10.1021/acs.bioconjchem.7b00716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A G protein-coupled receptor (GPCR) agonist protein, thaumatin, was site-specifically conjugated at the N- or C-terminus with a fluorophore for visualization of GPCR:agonist interactions. The N-terminus was specifically conjugated using a synthetic 2-pyridinecarboxyaldehyde reagent. The interaction profiles observed for N- and C-terminal conjugates were varied; N-terminal conjugates interacted very weakly with the GPCR of interest, whereas C-terminal conjugates bound to the receptor. These chemical biology tools allow interactions of therapeutic proteins:GPCR to be monitored and visualized. The methodology used for site-specific bioconjugation represents an advance in application of 2-pyridinecarboxyaldehydes for N-terminal specific bioconjugations.
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Affiliation(s)
- Robert D Healey
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Jonathan P Wojciechowski
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Ana Monserrat-Martinez
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Susan L Tan
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Christopher P Marquis
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Emma Sierecki
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Yann Gambin
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Angela M Finch
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
| | - Pall Thordarson
- School of Chemistry, the Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, §School of Medical Sciences, ‡EMBL Australia Node of Single Molecule Science, and ⊥School of Biotechnology and Biomolecular Sciences, University of New South Wales , Sydney, 2052 New South Wales, Australia
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Affiliation(s)
- Madduri Srinivasarao
- Purdue Institute for Drug
Discovery, Purdue University, West Lafayette, Indiana 47907, United States
| | - Philip S. Low
- Purdue Institute for Drug
Discovery, Purdue University, West Lafayette, Indiana 47907, United States
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