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Dumat B, Montel L, Pinon L, Matton P, Cattiaux L, Fattaccioli J, Mallet JM. Mannose-Coated Fluorescent Lipid Microparticles for Specific Cellular Targeting and Internalization via Glycoreceptor-Induced Phagocytosis. ACS APPLIED BIO MATERIALS 2019; 2:5118-5126. [DOI: 10.1021/acsabm.9b00793] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Blaise Dumat
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
| | - Lorraine Montel
- PASTEUR, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
- Institut Pierre-Gilles de Gennes pour la Microfluidique, Paris 75005, France
| | - Léa Pinon
- PASTEUR, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
- Institut Pierre-Gilles de Gennes pour la Microfluidique, Paris 75005, France
| | - Pascal Matton
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
| | - Laurent Cattiaux
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
| | - Jacques Fattaccioli
- PASTEUR, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
- Institut Pierre-Gilles de Gennes pour la Microfluidique, Paris 75005, France
| | - Jean-Maurice Mallet
- Laboratoire des Biomolécules, LBM, Département de Chimie, École Normale Supérieure, CNRS, PSL University, Sorbonne Université, Paris 75005, France
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Ben M'Barek K, Molino D, Quignard S, Plamont MA, Chen Y, Chavrier P, Fattaccioli J. Phagocytosis of immunoglobulin-coated emulsion droplets. Biomaterials 2015; 51:270-277. [PMID: 25771017 DOI: 10.1016/j.biomaterials.2015.02.030] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 02/02/2015] [Indexed: 11/15/2022]
Abstract
Phagocytosis by macrophages represents a fundamental process essential for both immunity and tissue homeostasis. The size of targets to be eliminated ranges from small particles as bacteria to large objects as cancerous or senescent cells. Most of our current quantitative knowledge on phagocytosis is based on the use of solid polymer microparticles as model targets that are well adapted to the study of phagocytosis mechanisms that do not involve any lateral mobility of the ligands, despite the relevance of this parameter in the immunological context. Herein we designed monodisperse, IgG-coated emulsion droplets that are efficiently and specifically internalized by macrophages through in-vitro FcγR-mediated phagocytosis. We show that, contrary to solid polymeric beads, droplet uptake is efficient even for low IgG densities, and is accompagnied by the clustering of the opsonins in the zone of contact with the macrophage during the adhesion step. Beyond the sole interest in the design of the material, our results suggest that lateral mobility of proteins at the interface of a target greatly enhances the phagocytic uptake.
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Affiliation(s)
- Kalthoum Ben M'Barek
- Ecole Normale Supérieure - PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005, Paris, France; Sorbonne Universités, UPMC Univ. Paris 06, PASTEUR, F-75005, Paris, France; CNRS, UMR 8640 PASTEUR, F-75005, Paris, France
| | - Diana Molino
- Ecole Normale Supérieure - PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005, Paris, France; Sorbonne Universités, UPMC Univ. Paris 06, PASTEUR, F-75005, Paris, France; CNRS, UMR 8640 PASTEUR, F-75005, Paris, France
| | - Sandrine Quignard
- Ecole Normale Supérieure - PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005, Paris, France; Sorbonne Universités, UPMC Univ. Paris 06, PASTEUR, F-75005, Paris, France; CNRS, UMR 8640 PASTEUR, F-75005, Paris, France
| | - Marie-Aude Plamont
- Ecole Normale Supérieure - PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005, Paris, France; Sorbonne Universités, UPMC Univ. Paris 06, PASTEUR, F-75005, Paris, France; CNRS, UMR 8640 PASTEUR, F-75005, Paris, France
| | - Yong Chen
- Ecole Normale Supérieure - PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005, Paris, France; Sorbonne Universités, UPMC Univ. Paris 06, PASTEUR, F-75005, Paris, France; CNRS, UMR 8640 PASTEUR, F-75005, Paris, France
| | - Philippe Chavrier
- Institut Curie, Research Center, Paris, France; Membrane and Cytoskeleton Dynamics, CNRS, UMR 144, Paris, France
| | - Jacques Fattaccioli
- Ecole Normale Supérieure - PSL Research University, Département de Chimie, 24 rue Lhomond, F-75005, Paris, France; Sorbonne Universités, UPMC Univ. Paris 06, PASTEUR, F-75005, Paris, France; CNRS, UMR 8640 PASTEUR, F-75005, Paris, France.
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Hemmer E, Yamano T, Kishimoto H, Venkatachalam N, Hyodo H, Soga K. Cytotoxic aspects of gadolinium oxide nanostructures for up-conversion and NIR bioimaging. Acta Biomater 2013; 9:4734-43. [PMID: 22963845 DOI: 10.1016/j.actbio.2012.08.045] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Revised: 07/16/2012] [Accepted: 08/20/2012] [Indexed: 01/21/2023]
Abstract
Bioimaging is an important diagnostic tool in the investigation and visualization of biological phenomena in cells and in medicine. In this context, up-converting Gd(2)O(3):Er(3+),Yb(3+) nanostructures (nanoparticles, nanorods) have been synthesized by precipitation methods and hydrothermal synthesis. Independent of size and morphology, Gd(2)O(3):Er(3+),Yb(3+) powders show up-conversion (550 nm, 670 nm) and near-infrared emission (1.5 μm) upon 980 nm excitation, which makes these structures interesting for application as biomarkers. With regard to their potential application in bioimaging, cytotoxicity is an important aspect and is strongly affected by the physico-chemical properties of the investigated nanostructures. Therefore, the cytotoxic effect of bare and poly(ethylene glycol)-b-poly(acrylic acid) block co-polymer-modified nanostructures on non-phagocytic and phagocytic cells (B-cell hybridoma cells and macrophages) was investigated. The observed cytotoxic behavior in the case of macrophages incubated with bare nanostructures was assigned to the poor chemical durability of gadolinium oxide, but could be overcome by surface modification.
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Kusner DJ, Thompson CR, Melrose NA, Pitson SM, Obeid LM, Iyer SS. The Localization and Activity of Sphingosine Kinase 1 Are Coordinately Regulated with Actin Cytoskeletal Dynamics in Macrophages. J Biol Chem 2007; 282:23147-62. [PMID: 17519232 DOI: 10.1074/jbc.m700193200] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The physiologic and pathologic functions of sphingosine kinase (SK) require translocation to specific membrane compartments. We tested the hypothesis that interactions with actin filaments regulate the localization of SK1 to membrane surfaces, including the plasma membrane and phagosome. Macrophage activation is accompanied by a marked increase in association of SK1 with actin filaments. Catalytically-inactive (CI)- and phosphorylation-defective (PD)-SK1 mutants exhibited reductions in plasma membrane translocation, colocalization with cortical actin filaments, membrane ruffling, and lamellipodia formation, compared with wild-type (WT)-SK1. However, translocation of CI- and PD-SK1 to phagosomes were equivalent to WT-SK1. SK1 exhibited constitutive- and stimulus-enhanced association with actin filaments and F-actin-enriched membrane fractions in both intact macrophages and a novel in vitro assay. In contrast, SK1 bound G-actin only under stimulated conditions. Actin inhibitors disrupted SK1 localization and modulated its activity. Conversely, reduction of SK1 levels or activity via RNA interference or specific chemical inhibition resulted in dysregulation of actin filaments. Thus, the localization and activity of SK1 are coordinately regulated with actin dynamics during macrophage activation.
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Affiliation(s)
- David J Kusner
- Inflammation Program, Division of Infectious Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine and Veterans Affairs Medical Center, Iowa City, Iowa 52245, USA.
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