1
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Dancy C, Heintzelman KE, Katt ME. The Glycocalyx: The Importance of Sugar Coating the Blood-Brain Barrier. Int J Mol Sci 2024; 25:8404. [PMID: 39125975 PMCID: PMC11312458 DOI: 10.3390/ijms25158404] [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: 06/28/2024] [Revised: 07/26/2024] [Accepted: 07/30/2024] [Indexed: 08/12/2024] Open
Abstract
The endothelial glycocalyx (GCX), located on the luminal surface of vascular endothelial cells, is composed of glycoproteins, proteoglycans, and glycosaminoglycans. It plays a pivotal role in maintaining blood-brain barrier (BBB) integrity and vascular health within the central nervous system (CNS), influencing critical processes such as blood flow regulation, inflammation modulation, and vascular permeability. While the GCX is ubiquitously expressed on the surface of every cell in the body, the GCX at the BBB is highly specialized, with a distinct composition of glycans, physical structure, and surface charge when compared to GCX elsewhere in the body. There is evidence that the GCX at the BBB is disrupted and partially shed in many diseases that impact the CNS. Despite this, the GCX has yet to be a major focus of therapeutic targeting for CNS diseases. This review examines diverse model systems used in cerebrovascular GCX-related research, emphasizing the importance of selecting appropriate models to ensure clinical relevance and translational potential. This review aims to highlight the importance of the GCX in disease and how targeting the GCX at the BBB specifically may be an effective approach for brain specific targeting for therapeutics.
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Affiliation(s)
- Candis Dancy
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA; (C.D.); (K.E.H.)
| | - Kaitlyn E. Heintzelman
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA; (C.D.); (K.E.H.)
- School of Medicine, West Virginia University, Morgantown, WV 26506, USA
| | - Moriah E. Katt
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, WV 26506, USA; (C.D.); (K.E.H.)
- Department of Neuroscience, School of Medicine, West Virginia University Health Science Center, Morgantown, WV 26506, USA
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2
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Loeck M, Placci M, Muro S. Effect of acid sphingomyelinase deficiency in type A Niemann-Pick disease on the transport of therapeutic nanocarriers across the blood-brain barrier. Drug Deliv Transl Res 2023; 13:3077-3093. [PMID: 37341882 DOI: 10.1007/s13346-023-01374-z] [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] [Accepted: 05/20/2023] [Indexed: 06/22/2023]
Abstract
ASM deficiency in Niemann-Pick disease type A results in aberrant cellular accumulation of sphingomyelin, neuroinflammation, neurodegeneration, and early death. There is no available treatment because enzyme replacement therapy cannot surmount the blood-brain barrier (BBB). Nanocarriers (NCs) targeted across the BBB via transcytosis might help; yet, whether ASM deficiency alters transcytosis remains poorly characterized. We investigated this using model NCs targeted to intracellular adhesion molecule-1 (ICAM-1), transferrin receptor (TfR), or plasmalemma vesicle-associated protein-1 (PV1) in ASM-normal vs. ASM-deficient BBB models. Disease differentially changed the expression of all three targets, with ICAM-1 becoming the highest. Apical binding and uptake of anti-TfR NCs and anti-PV1 NCs were unaffected by disease, while anti-ICAM-1 NCs had increased apical binding and decreased uptake rate, resulting in unchanged intracellular NCs. Additionally, anti-ICAM-1 NCs underwent basolateral reuptake after transcytosis, whose rate was decreased by disease, as for apical uptake. Consequently, disease increased the effective transcytosis rate for anti-ICAM-1 NCs. Increased transcytosis was also observed for anti-PV1 NCs, while anti-TfR NCs remained unaffected. A fraction of each formulation trafficked to endothelial lysosomes. This was decreased in disease for anti-ICAM-1 NCs and anti-PV1 NCs, agreeing with opposite transcytosis changes, while it increased for anti-TfR NCs. Overall, these variations in receptor expression and NC transport resulted in anti-ICAM-1 NCs displaying the highest absolute transcytosis in the disease condition. Furthermore, these results revealed that ASM deficiency can differently alter these processes depending on the particular target, for which this type of study is key to guide the design of therapeutic NCs.
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Affiliation(s)
- Maximilian Loeck
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Marina Placci
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Silvia Muro
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science and Technology, Barcelona, Spain.
- Institution of Catalonia for Research and Advanced Studies (ICREA), Barcelona, Spain.
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3
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Nong J, Glassman PM, Myerson JW, Zuluaga-Ramirez V, Rodriguez-Garcia A, Mukalel A, Omo-Lamai S, Walsh LR, Zamora ME, Gong X, Wang Z, Bhamidipati K, Kiseleva RY, Villa CH, Greineder CF, Kasner SE, Weissman D, Mitchell MJ, Muro S, Persidsky Y, Brenner JS, Muzykantov VR, Marcos-Contreras OA. Targeted Nanocarriers Co-Opting Pulmonary Intravascular Leukocytes for Drug Delivery to the Injured Brain. ACS NANO 2023; 17:13121-13136. [PMID: 37432926 PMCID: PMC10373654 DOI: 10.1021/acsnano.2c08275] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 06/08/2023] [Indexed: 07/13/2023]
Abstract
Ex vivo-loaded white blood cells (WBC) can transfer cargo to pathological foci in the central nervous system (CNS). Here we tested affinity ligand driven in vivo loading of WBC in order to bypass the need for ex vivo WBC manipulation. We used a mouse model of acute brain inflammation caused by local injection of tumor necrosis factor alpha (TNF-α). We intravenously injected nanoparticles targeted to intercellular adhesion molecule 1 (anti-ICAM/NP). We found that (A) at 2 h, >20% of anti-ICAM/NP were localized to the lungs; (B) of the anti-ICAM/NP in the lungs >90% were associated with leukocytes; (C) at 6 and 22 h, anti-ICAM/NP pulmonary uptake decreased; (D) anti-ICAM/NP uptake in brain increased up to 5-fold in this time interval, concomitantly with migration of WBCs into the injured brain. Intravital microscopy confirmed transport of anti-ICAM/NP beyond the blood-brain barrier and flow cytometry demonstrated complete association of NP with WBC in the brain (98%). Dexamethasone-loaded anti-ICAM/liposomes abrogated brain edema in this model and promoted anti-inflammatory M2 polarization of macrophages in the brain. In vivo targeted loading of WBC in the intravascular pool may provide advantages of coopting WBC predisposed to natural rapid mobilization from the lungs to the brain, connected directly via conduit vessels.
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Affiliation(s)
- Jia Nong
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Patrick M. Glassman
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department
of Pharmaceutical Sciences, Temple University
School of Pharmacy, Philadelphia, Pennsylvania 19140, United States
| | - Jacob W. Myerson
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Viviana Zuluaga-Ramirez
- Department
of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Alba Rodriguez-Garcia
- Department
of Pathology and Laboratory Medicine, Ovarian Cancer Research Center,
Perelman School of Medicine, University
of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Center
for Cellular Immunotherapies, Abramson Cancer Center, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Alvin Mukalel
- Department
of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Serena Omo-Lamai
- Division
of Pulmonary Allergy, and Critical Care, Department of Medicine, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Landis R. Walsh
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marco E. Zamora
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- School
of Biomedical Engineering, Science, and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Xijing Gong
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Division
of Pulmonary Allergy, and Critical Care, Department of Medicine, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zhicheng Wang
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kartik Bhamidipati
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Raisa Y. Kiseleva
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Carlos H. Villa
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Colin Fred Greineder
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Scott E. Kasner
- Department
of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Drew Weissman
- Division
of Infectious Diseases, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Michael J. Mitchell
- Department
of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Abramson
Cancer Center, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Institute
for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Cardiovascular
Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Institute
for Regenerative Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Silvia Muro
- Institute for Bioengineering of Catalonia (IBEC), Barcelona, 08028, Spain
- Institute of Catalonia for Research and
Advanced Studies (ICREA), Barcelona, 08010, Spain
- Institute
for Bioscience and Biotechnology (IBBR), College Park, Maryland 20850, United States
| | - Yuri Persidsky
- Department
of Pathology and Laboratory Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania 19140, United States
- Center
for Substance Abuse Research, Lewis Katz School of Medicine, Temple University, Philadelphia, Pennsylvania 19140, United States
| | - Jacob Samuel Brenner
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Division
of Pulmonary Allergy, and Critical Care, Department of Medicine, Perelman
School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Vladimir R. Muzykantov
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Oscar A. Marcos-Contreras
- Department
of Systems Pharmacology and Translational Therapeutics, Perelman School
of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Department
of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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4
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Placci M, Giannotti MI, Muro S. Polymer-based drug delivery systems under investigation for enzyme replacement and other therapies of lysosomal storage disorders. Adv Drug Deliv Rev 2023; 197:114683. [PMID: 36657645 PMCID: PMC10629597 DOI: 10.1016/j.addr.2022.114683] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 11/30/2022] [Accepted: 12/25/2022] [Indexed: 01/18/2023]
Abstract
Lysosomes play a central role in cellular homeostasis and alterations in this compartment associate with many diseases. The most studied example is that of lysosomal storage disorders (LSDs), a group of 60 + maladies due to genetic mutations affecting lysosomal components, mostly enzymes. This leads to aberrant intracellular storage of macromolecules, altering normal cell function and causing multiorgan syndromes, often fatal within the first years of life. Several treatment modalities are available for a dozen LSDs, mostly consisting of enzyme replacement therapy (ERT) strategies. Yet, poor biodistribution to main targets such as the central nervous system, musculoskeletal tissue, and others, as well as generation of blocking antibodies and adverse effects hinder effective LSD treatment. Drug delivery systems are being studied to surmount these obstacles, including polymeric constructs and nanoparticles that constitute the focus of this article. We provide an overview of the formulations being tested, the diseases they aim to treat, and the results observed from respective in vitro and in vivo studies. We also discuss the advantages and disadvantages of these strategies, the remaining gaps of knowledge regarding their performance, and important items to consider for their clinical translation. Overall, polymeric nanoconstructs hold considerable promise to advance treatment for LSDs.
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Affiliation(s)
- Marina Placci
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain
| | - Marina I Giannotti
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain; CIBER-BBN, ISCIII, Barcelona, Spain; Department of Materials Science and Physical Chemistry, University of Barcelona, Barcelona 08028, Spain
| | - Silvia Muro
- Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute for Science and Technology (BIST), Barcelona 08028, Spain; Institute of Catalonia for Research and Advanced Studies (ICREA), Barcelona 08010, Spain; Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA.
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5
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Targeting vascular inflammation through emerging methods and drug carriers. Adv Drug Deliv Rev 2022; 184:114180. [PMID: 35271986 PMCID: PMC9035126 DOI: 10.1016/j.addr.2022.114180] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 02/18/2022] [Accepted: 03/04/2022] [Indexed: 12/16/2022]
Abstract
Acute inflammation is a common dangerous component of pathogenesis of many prevalent conditions with high morbidity and mortality including sepsis, thrombosis, acute respiratory distress syndrome (ARDS), COVID-19, myocardial and cerebral ischemia-reperfusion, infection, and trauma. Inflammatory changes of the vasculature and blood mediate the course and outcome of the pathology in the tissue site of insult, remote organs and systemically. Endothelial cells lining the luminal surface of the vasculature play the key regulatory functions in the body, distinct under normal vs. pathological conditions. In theory, pharmacological interventions in the endothelial cells might enable therapeutic correction of the overzealous damaging pro-inflammatory and pro-thrombotic changes in the vasculature. However, current agents and drug delivery systems (DDS) have inadequate pharmacokinetics and lack the spatiotemporal precision of vascular delivery in the context of acute inflammation. To attain this level of precision, many groups design DDS targeted to specific endothelial surface determinants. These DDS are able to provide specificity for desired tissues, organs, cells, and sub-cellular compartments needed for a particular intervention. We provide a brief overview of endothelial determinants, design of DDS targeted to these molecules, their performance in experimental models with focus on animal studies and appraisal of emerging new approaches. Particular attention is paid to challenges and perspectives of targeted therapeutics and nanomedicine for advanced management of acute inflammation.
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6
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Muntimadugu E, Silva-Abreu M, Vives G, Loeck M, Pham V, del Moral M, Solomon M, Muro S. Comparison between Nanoparticle Encapsulation and Surface Loading for Lysosomal Enzyme Replacement Therapy. Int J Mol Sci 2022; 23:ijms23074034. [PMID: 35409394 PMCID: PMC8999373 DOI: 10.3390/ijms23074034] [Citation(s) in RCA: 1] [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: 02/22/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 12/27/2022] Open
Abstract
Poly(lactide-co-glycolide) (PLGA) nanoparticles (NPs) enhance the delivery of therapeutic enzymes for replacement therapy of lysosomal storage disorders. Previous studies examined NPs encapsulating or coated with enzymes, but these formulations have never been compared. We examined this using hyaluronidase (HAse), deficient in mucopolysaccharidosis IX, and acid sphingomyelinase (ASM), deficient in types A−B Niemann−Pick disease. Initial screening of size, PDI, ζ potential, and loading resulted in the selection of the Lactel II co-polymer vs. Lactel I or Resomer, and Pluronic F68 surfactant vs. PVA or DMAB. Enzyme input and addition of carrier protein were evaluated, rendering NPs having, e.g., 181 nm diameter, 0.15 PDI, −36 mV ζ potential, and 538 HAse molecules encapsulated per NP. Similar NPs were coated with enzyme, which reduced loading (e.g., 292 HAse molecules/NP). NPs were coated with targeting antibodies (> 122 molecules/NP), lyophilized for storage without alterations, and acceptably stable at physiological conditions. NPs were internalized, trafficked to lysosomes, released active enzyme at lysosomal conditions, and targeted both peripheral organs and the brain after i.v. administration in mice. While both formulations enhanced enzyme delivery compared to free enzyme, encapsulating NPs surpassed coated counterparts (18.4- vs. 4.3-fold enhancement in cells and 6.2- vs. 3-fold enhancement in brains), providing guidance for future applications.
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Affiliation(s)
- Eameema Muntimadugu
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (E.M.); (V.P.); (M.S.)
| | - Marcelle Silva-Abreu
- Institute for Bioengineering of Catalonia, Barcelona Institute for Science and Technology, 08028 Barcelona, Spain; (M.S.-A.); (G.V.); (M.L.); (M.d.M.)
| | - Guillem Vives
- Institute for Bioengineering of Catalonia, Barcelona Institute for Science and Technology, 08028 Barcelona, Spain; (M.S.-A.); (G.V.); (M.L.); (M.d.M.)
| | - Maximilian Loeck
- Institute for Bioengineering of Catalonia, Barcelona Institute for Science and Technology, 08028 Barcelona, Spain; (M.S.-A.); (G.V.); (M.L.); (M.d.M.)
| | - Vy Pham
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (E.M.); (V.P.); (M.S.)
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
| | - Maria del Moral
- Institute for Bioengineering of Catalonia, Barcelona Institute for Science and Technology, 08028 Barcelona, Spain; (M.S.-A.); (G.V.); (M.L.); (M.d.M.)
| | - Melani Solomon
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (E.M.); (V.P.); (M.S.)
| | - Silvia Muro
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (E.M.); (V.P.); (M.S.)
- Institute for Bioengineering of Catalonia, Barcelona Institute for Science and Technology, 08028 Barcelona, Spain; (M.S.-A.); (G.V.); (M.L.); (M.d.M.)
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, USA
- Catalan Institution for Research and Advanced Studies, 08010 Barcelona, Spain
- Correspondence:
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7
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Qamar B, Solomon M, Marin A, Fuerst TR, Andrianov AK, Muro S. Intracellular Delivery of Active Proteins by Polyphosphazene Polymers. Pharmaceutics 2021; 13:249. [PMID: 33578893 PMCID: PMC7916676 DOI: 10.3390/pharmaceutics13020249] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/13/2022] Open
Abstract
Achieving intracellular delivery of protein therapeutics within cells remains a significant challenge. Although custom formulations are available for some protein therapeutics, the development of non-toxic delivery systems that can incorporate a variety of active protein cargo and maintain their stability, is a topic of great relevance. This study utilized ionic polyphosphazenes (PZ) that can assemble into supramolecular complexes through non-covalent interactions with different types of protein cargo. We tested a PEGylated graft copolymer (PZ-PEG) and a pyrrolidone containing linear derivative (PZ-PYR) for their ability to intracellularly deliver FITC-avidin, a model protein. In endothelial cells, PZ-PYR/protein exhibited both faster internalization and higher uptake levels than PZ-PEG/protein, while in cancer cells both polymers achieved similar uptake levels over time, although the internalization rate was slower for PZ-PYR/protein. Uptake was mediated by endocytosis through multiple mechanisms, PZ-PEG/avidin colocalized more profusely with endo-lysosomes, and PZ-PYR/avidin achieved greater cytosolic delivery. Consequently, a PZ-PYR-delivered anti-F-actin antibody was able to bind to cytosolic actin filaments without needing cell permeabilization. Similarly, a cell-impermeable Bax-BH3 peptide known to induce apoptosis, decreased cell viability when complexed with PZ-PYR, demonstrating endo-lysosomal escape. These biodegradable PZs were non-toxic to cells and represent a promising platform for drug delivery of protein therapeutics.
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Affiliation(s)
- Bareera Qamar
- College of Mathematical and Natural Sciences, University of Maryland, College Park, MD 20742, USA;
| | - Melani Solomon
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (M.S.); (A.M.); (T.R.F.)
| | - Alexander Marin
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (M.S.); (A.M.); (T.R.F.)
| | - Thomas R. Fuerst
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (M.S.); (A.M.); (T.R.F.)
| | - Alexander K. Andrianov
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (M.S.); (A.M.); (T.R.F.)
| | - Silvia Muro
- Institute for Bioscience and Biotechnology Research, University of Maryland, College Park, MD 20742, USA; (M.S.); (A.M.); (T.R.F.)
- Institute of Catalonia for Research and Advanced Studies, 08010 Barcelona, Spain
- Institute for Bioengineering of Catalonia of the Barcelona Institute of Science and Technology, 08028 Barcelona, Spain
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8
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Novel strategies of third level (Organelle-specific) drug targeting: An innovative approach of modern therapeutics. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102315] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Manthe RL, Loeck M, Bhowmick T, Solomon M, Muro S. Intertwined mechanisms define transport of anti-ICAM nanocarriers across the endothelium and brain delivery of a therapeutic enzyme. J Control Release 2020; 324:181-193. [PMID: 32389778 PMCID: PMC7720842 DOI: 10.1016/j.jconrel.2020.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 04/27/2020] [Accepted: 05/04/2020] [Indexed: 12/12/2022]
Abstract
The interaction of drug delivery systems with tissues is key for their application. An example is drug carriers targeted to endothelial barriers, which can be transported to intra-endothelial compartments (lysosomes) or transcellularly released at the tissue side (transcytosis). Although carrier targeting valency influences this process, the mechanism is unknown. We studied this using polymer nanocarriers (NCs) targeted to intercellular adhesion molecule-1 (ICAM-1), an endothelial-surface glycoprotein whose expression is increased in pathologies characterized by inflammation. A bell-shaped relationship was found between NC targeting valency and the rate of transcytosis, where high and low NC valencies rendered less efficient transcytosis rates than an intermediate valency formulation. In contrast, an inverted bell-shape relationship was found for NC valency and lysosomal trafficking rates. Data suggested a model where NC valency plays an opposing role in the two sub-processes involved in transcytosis: NC binding-uptake depended directly on valency and exocytosis-detachment was inversely related to this parameter. This is because the greater the avidity of the NC-receptor interaction the more efficient uptake becomes, but NC-receptor detachment post-transport is more compromised. Cleavage of the receptor at the basolateral side of endothelial cells facilitated NC transcytosis, likely by helping NC detachment post-transport. Since transcytosis encompasses both sets of events, the full process finds an optimum at the intersection of these inverted relationships, explaining the bell-shaped behavior. NCs also trafficked to lysosomes from the apical side and, additionally, from the basolateral side in the case of high valency NCs which are slower at detaching from the receptor. This explains the opposite behavior of NC valency for transcytosis vs. lysosomal transport. Anti-ICAM NCs were verified to traffic into the brain after intravenous injection in mice, and both cellular and in vivo data showed that intermediate valency NCs resulted in higher delivery of a therapeutic enzyme, acid sphingomyelinase, required for types A and B Niemann-Pick disease.
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Affiliation(s)
- Rachel L Manthe
- Institute for Bioscience and Biotechnology Research (IBBR) and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742-4450, USA
| | - Maximilian Loeck
- Institute for Bioengineering of Catalonia (IBEC) of the Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain
| | - Tridib Bhowmick
- Institute for Bioscience and Biotechnology Research (IBBR) and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742-4450, USA
| | - Melani Solomon
- Institute for Bioscience and Biotechnology Research (IBBR) and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742-4450, USA
| | - Silvia Muro
- Institute for Bioscience and Biotechnology Research (IBBR) and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742-4450, USA; Institute for Bioengineering of Catalonia (IBEC) of the Barcelona Institute of Science and Technology (BIST), Barcelona 08028, Spain; Institution of Catalonia for Research and Advanced Studies (ICREA), Barcelona 08910, Spain.
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10
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Ju Y, Guo H, Edman M, Hamm-Alvarez SF. Application of advances in endocytosis and membrane trafficking to drug delivery. Adv Drug Deliv Rev 2020; 157:118-141. [PMID: 32758615 PMCID: PMC7853512 DOI: 10.1016/j.addr.2020.07.026] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 07/28/2020] [Accepted: 07/29/2020] [Indexed: 12/12/2022]
Abstract
Multidisciplinary research efforts in the field of drug delivery have led to the development of a variety of drug delivery systems (DDS) designed for site-specific delivery of diagnostic and therapeutic agents. Since efficient uptake of drug carriers into target cells is central to effective drug delivery, a comprehensive understanding of the biological pathways for cellular internalization of DDS can facilitate the development of DDS capable of precise tissue targeting and enhanced therapeutic outcomes. Diverse methods have been applied to study the internalization mechanisms responsible for endocytotic uptake of extracellular materials, which are also the principal pathways exploited by many DDS. Chemical inhibitors remain the most commonly used method to explore endocytotic internalization mechanisms, although genetic methods are increasingly accessible and may constitute more specific approaches. This review highlights the molecular basis of internalization pathways most relevant to internalization of DDS, and the principal methods used to study each route. This review also showcases examples of DDS that are internalized by each route, and reviews the general effects of biophysical properties of DDS on the internalization efficiency. Finally, options for intracellular trafficking and targeting of internalized DDS are briefly reviewed, representing an additional opportunity for multi-level targeting to achieve further specificity and therapeutic efficacy.
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Affiliation(s)
- Yaping Ju
- Department of Pharmacology and Pharmaceutical Sciences, USC School of Pharmacy, USA
| | - Hao Guo
- Department of Pharmacology and Pharmaceutical Sciences, USC School of Pharmacy, USA
| | - Maria Edman
- Department of Ophthalmology, Roski Eye Institute, Keck School of Medicine, University of Southern California, USA
| | - Sarah F Hamm-Alvarez
- Department of Pharmacology and Pharmaceutical Sciences, USC School of Pharmacy, USA; Department of Ophthalmology, Roski Eye Institute, Keck School of Medicine, University of Southern California, USA.
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11
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Charabati M, Rabanel JM, Ramassamy C, Prat A. Overcoming the Brain Barriers: From Immune Cells to Nanoparticles. Trends Pharmacol Sci 2019; 41:42-54. [PMID: 31839374 DOI: 10.1016/j.tips.2019.11.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 01/04/2023]
Abstract
Nanoparticulate carriers, often referred to as nanoparticles (NPs), represent an important pharmacological advance for drug protection and tissue-specific drug delivery. Accessing the central nervous system (CNS), however, is a complex process regulated by mainly three brain barriers. While some leukocyte (i.e., immune cell) subsets are equipped with the adequate molecular machinery to infiltrate the CNS in physiological and/or pathological contexts, the successful delivery of NPs into the CNS remains hindered by the tightness of the brain barriers. Here, we present an overview of the three major brain barriers and the mechanisms allowing leukocytes to migrate across each of them. We subsequently review different immune-inspired and -mediated strategies to deliver NPs into the CNS. Finally, we discuss the prospect of exploiting leukocyte trafficking mechanisms for further progress.
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Affiliation(s)
- Marc Charabati
- Department of Neuroscience, Faculty of Medicine, Université de Montréal, and Neuroimmunology Unit, Centre de Recherche du CHUM (CRCHUM), Montréal, QC, Canada
| | - Jean-Michel Rabanel
- INRS, Centre Armand-Frappier Santé Biotechnologie, 531, Boulevard des Prairies, Laval, QC, Canada
| | - Charles Ramassamy
- INRS, Centre Armand-Frappier Santé Biotechnologie, 531, Boulevard des Prairies, Laval, QC, Canada.
| | - Alexandre Prat
- Department of Neuroscience, Faculty of Medicine, Université de Montréal, and Neuroimmunology Unit, Centre de Recherche du CHUM (CRCHUM), Montréal, QC, Canada.
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12
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Li Y, Du L, Wu C, Yu B, Zhang H, An F. Peptide Sequence-Dominated Enzyme-Responsive Nanoplatform for Anticancer Drug Delivery. Curr Top Med Chem 2019; 19:74-97. [PMID: 30686257 DOI: 10.2174/1568026619666190125144621] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 11/06/2018] [Accepted: 11/23/2018] [Indexed: 02/08/2023]
Abstract
Enzymatic dysregulation in tumor and intracellular microenvironments has made this property
a tremendously promising responsive element for efficient diagnostics, carrier targeting, and drug
release. When combined with nanotechnology, enzyme-responsive drug delivery systems (DDSs) have
achieved substantial advancements. In the first part of this tutorial review, changes in tumor and intracellular
microenvironmental factors, particularly the enzymatic index, are described. Subsequently, the
peptide sequences of various enzyme-triggered nanomaterials are summarized for their uses in various
drug delivery applications. Then, some other enzyme responsive nanostructures are discussed. Finally,
the future opportunities and challenges are discussed. In brief, this review can provide inspiration and
impetus for exploiting more promising internal enzyme stimuli-responsive nanoDDSs for targeted tumor
diagnosis and treatment.
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Affiliation(s)
- Yanan Li
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Liping Du
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Chunsheng Wu
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
| | - Bin Yu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Hui Zhang
- First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, 030001, China
| | - Feifei An
- Institute of Medical Engineering, Department of Biophysics, School of Basic Medical Science, Health Science Center, Xi’an Jiaotong University, No.76 Yanta West Road, Xi'an, Shaanxi 710061, China
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13
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Zhang Q, Hu S, Wang K, Cui M, Li X, Wang M, Hu X. Engineering a yeast double-molecule carrier for drug screening. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:386-396. [PMID: 29611428 DOI: 10.1080/21691401.2018.1457539] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
With the advantages of unicellular eukaryotic structure and easy manipulation, yeast becomes a popular tool for biochemical, genetic and medicinal studies. In order to construct an efficient anti-inflammatory drug screening platform, we engineered yeast as a double-molecule carrier, of which an inserted domain (I domain) of lymphocyte function-associated antigen 1 was displayed on yeast surface and a green fluorescent protein (GFP) was expressed inside cytosol. The I domain specifically targeted a surface marker of mammalian cells, intercellular adhesion molecule 1, whose number is correlated with the level of cellular inflammation. Examination of GFP intensity enables swift quantification of the yeast-mammalian cell binding and thus it reflects inflammatory potency, herein the inflammatory index, of a chemical imposed to cells. The inflammatory potency of a total of 1340 chemicals was indexed. Among them, 1 inflammation-inducing and 1 inflammation-reducing compounds were verified both in vitro and in vivo. Our method demonstrated a swift, facile and high-throughput screening platform at the protein level for inflammation and related diseases drug discovery without using sophisticated instruments.
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Affiliation(s)
- Qiyun Zhang
- a Laboratory of Drug Discovery and Molecular Engineering, Department of Medicinal Plants, College of Plant Science and Technology , Huazhong Agricultural University (HZAU) , Wuhan , China.,b National & Local Joint Engineering Research Center (Hubei) for Medicinal Plant Breeding and Cultivation , Wuhan , China.,c Hubei Provincial Engineering Research Center for Medicinal Plants , Wuhan , China
| | - Sheng Hu
- d Hubei Cancer Hospital , Wuhan , China
| | - Ke Wang
- e State Key Laboratory of Agricultural Microbiology , HZAU , Wuhan , China.,f College of Veterinary Medicine , HZAU , Wuhan , China
| | - Min Cui
- e State Key Laboratory of Agricultural Microbiology , HZAU , Wuhan , China.,f College of Veterinary Medicine , HZAU , Wuhan , China
| | - Xiaohua Li
- a Laboratory of Drug Discovery and Molecular Engineering, Department of Medicinal Plants, College of Plant Science and Technology , Huazhong Agricultural University (HZAU) , Wuhan , China.,b National & Local Joint Engineering Research Center (Hubei) for Medicinal Plant Breeding and Cultivation , Wuhan , China.,c Hubei Provincial Engineering Research Center for Medicinal Plants , Wuhan , China
| | - Mo Wang
- a Laboratory of Drug Discovery and Molecular Engineering, Department of Medicinal Plants, College of Plant Science and Technology , Huazhong Agricultural University (HZAU) , Wuhan , China.,b National & Local Joint Engineering Research Center (Hubei) for Medicinal Plant Breeding and Cultivation , Wuhan , China.,c Hubei Provincial Engineering Research Center for Medicinal Plants , Wuhan , China
| | - Xuebo Hu
- a Laboratory of Drug Discovery and Molecular Engineering, Department of Medicinal Plants, College of Plant Science and Technology , Huazhong Agricultural University (HZAU) , Wuhan , China.,b National & Local Joint Engineering Research Center (Hubei) for Medicinal Plant Breeding and Cultivation , Wuhan , China.,c Hubei Provincial Engineering Research Center for Medicinal Plants , Wuhan , China
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14
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Mullis AS, Schlichtmann BW, Narasimhan B, Cademartiri R, Mallapragada SK. Ligand-cascading nano-delivery devices to enable multiscale targeting of anti-neurodegenerative therapeutics. Biomed Mater 2018; 13:034102. [DOI: 10.1088/1748-605x/aaa778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Sharma A, Vaghasiya K, Ray E, Verma RK. Lysosomal targeting strategies for design and delivery of bioactive for therapeutic interventions. J Drug Target 2017; 26:208-221. [DOI: 10.1080/1061186x.2017.1374390] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Ankur Sharma
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
| | - Kalpesh Vaghasiya
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
| | - Eupa Ray
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
| | - Rahul Kumar Verma
- Institute of Nano Science and Technology (INST), Phase 10, Mohali, India
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16
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Costa D, Costa C, Caldeira M, Cortes L, Queiroz JA, Cruz C. Targeting of Cellular Organelles by Fluorescent Plasmid DNA Nanoparticles. Biomacromolecules 2017; 18:2928-2936. [DOI: 10.1021/acs.biomac.7b00877] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Diana Costa
- CICS-UBI
− Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Carolina Costa
- CICS-UBI
− Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Margarida Caldeira
- Microscopy
Unit-CNC − Center for Neuroscience and Cell Biology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - Luísa Cortes
- Microscopy
Unit-CNC − Center for Neuroscience and Cell Biology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - João A. Queiroz
- CICS-UBI
− Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
| | - Carla Cruz
- CICS-UBI
− Health Sciences Research Centre, University of Beira Interior, Av. Infante D. Henrique, 6200-506 Covilhã, Portugal
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17
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Ghaffarian R, Roki N, Abouzeid A, Vreeland W, Muro S. Intra- and trans-cellular delivery of enzymes by direct conjugation with non-multivalent anti-ICAM molecules. J Control Release 2016; 238:221-230. [PMID: 27473764 DOI: 10.1016/j.jconrel.2016.07.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 07/16/2016] [Accepted: 07/25/2016] [Indexed: 12/27/2022]
Abstract
Intercellular adhesion molecule 1 (ICAM-1) is a cell-surface protein overexpressed in many diseases and explored for endocytosis and transcytosis of drug delivery systems. All previous evidence demonstrating ICAM-1-mediated transport of therapeutics into or across cells was obtained using nanocarriers or conjugates coupled to multiple copies of anti-ICAM antibodies or peptides. Yet, transport of therapeutics linked to non-multivalent anti-ICAM ligands has never been shown, since multivalency was believed to be necessary to induce transport. Our goal was to explore whether non-multivalent binding to ICAM-1 could drive endocytosis and/or transcytosis of model cargo in different cell types. We found that anti-ICAM was specifically internalized by all tested ICAM-1-expressing cells, including epithelial, fibroblast and neuroblastoma cells, primary or established cell lines. Uptake was inhibited at 4°C and in the presence of an inhibitor of the ICAM-1-associated pathway, rather than inhibitors of the clathrin or caveolar routes. We observed minimal transport of anti-ICAM to lysosomes, yet prominent and specific transcytosis across epithelial monolayers. Finally, we coupled a model cargo (the enzyme horseradish peroxidase (HRP)) to anti-ICAM and separated a 1:2 antibody:enzyme conjugate for non-multivalent ICAM-1 targeting. Similar to anti-ICAM, anti-ICAM-HRP was specifically internalized and transported across cells, which rendered intra- and trans-cellular enzyme activity. Therefore, non-multivalent ICAM-1 targeting also provides transport of cargoes into and across cells, representing a new alternative for future therapeutic applications via this route.
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Affiliation(s)
- Rasa Ghaffarian
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
| | - Niksa Roki
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA
| | - Abraham Abouzeid
- National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Wyatt Vreeland
- National Institute of Standards and Technology, Gaithersburg, MD, USA
| | - Silvia Muro
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, USA; Institute of Bioscience & Biotechnology Research, University of Maryland, College Park, MD, USA.
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18
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Michael BD, Griffiths MJ, Granerod J, Brown D, Davies NWS, Borrow R, Solomon T. Characteristic Cytokine and Chemokine Profiles in Encephalitis of Infectious, Immune-Mediated, and Unknown Aetiology. PLoS One 2016; 11:e0146288. [PMID: 26808276 PMCID: PMC4726626 DOI: 10.1371/journal.pone.0146288] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/15/2015] [Indexed: 01/20/2023] Open
Abstract
Background Encephalitis is parenchymal brain inflammation due to infectious or immune-mediated processes. However, in 15–60% the cause remains unknown. This study aimed to determine if the cytokine/chemokine-mediated host response can distinguish infectious from immune-mediated cases, and whether this may give a clue to aetiology in those of unknown cause. Methods We measured 38 mediators in serum and cerebrospinal fluid (CSF) of patients from the Health Protection Agency Encephalitis Study. Of serum from 78 patients, 38 had infectious, 20 immune-mediated, and 20 unknown aetiology. Of CSF from 37 patients, 20 had infectious, nine immune-mediated and eight unknown aetiology. Results Heat-map analysis of CSF mediator interactions was different for infectious and immune-mediated cases, and that of the unknown aetiology group was similar to the infectious pattern. Higher myeloperoxidase (MPO) concentrations were found in infectious than immune-mediated cases, in serum and CSF (p = 0.01 and p = 0.006). Serum MPO was also higher in unknown than immune-mediated cases (p = 0.03). Multivariate analysis selected serum MPO; classifying 31 (91%) as infectious (p = 0.008) and 17 (85%) as unknown (p = 0.009) as opposed to immune-mediated. CSF data also selected MPO classifying 11 (85%) as infectious as opposed to immune-mediated (p = 0.036). CSF neutrophils were detected in eight (62%) infective and one (14%) immune-mediated cases (p = 0.004); CSF MPO correlated with neutrophils (p<0.0001). Conclusions Mediator profiles of infectious aetiology differed from immune-mediated encephalitis; and those of unknown cause were similar to infectious cases, raising the hypothesis of a possible undiagnosed infectious cause. Particularly, neutrophils and MPO merit further investigation.
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MESH Headings
- Adult
- Bacterial Infections/blood
- Bacterial Infections/cerebrospinal fluid
- Biomarkers
- Cell Adhesion Molecules/blood
- Cell Adhesion Molecules/cerebrospinal fluid
- Chemokines/cerebrospinal fluid
- Chemokines/classification
- Cytokines/blood
- Cytokines/cerebrospinal fluid
- Diagnosis, Differential
- Encephalitis/blood
- Encephalitis/cerebrospinal fluid
- Encephalitis/etiology
- Encephalitis/immunology
- Encephalitis, Viral/blood
- Encephalitis, Viral/cerebrospinal fluid
- Encephalitis, Viral/diagnosis
- England/epidemiology
- Female
- Humans
- Infectious Encephalitis/blood
- Infectious Encephalitis/cerebrospinal fluid
- Infectious Encephalitis/diagnosis
- Leukocyte Count
- Male
- Multicenter Studies as Topic
- Mycoses/blood
- Mycoses/cerebrospinal fluid
- Mycoses/diagnosis
- Paraneoplastic Syndromes, Nervous System/blood
- Paraneoplastic Syndromes, Nervous System/cerebrospinal fluid
- Paraneoplastic Syndromes, Nervous System/diagnosis
- Peroxidase/blood
- Peroxidase/cerebrospinal fluid
- Retrospective Studies
- Toxoplasmosis, Cerebral/blood
- Toxoplasmosis, Cerebral/cerebrospinal fluid
- Toxoplasmosis, Cerebral/diagnosis
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Affiliation(s)
- Benedict D. Michael
- The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
- The Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
- NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, Liverpool, United Kingdom
- * E-mail:
| | - Michael J. Griffiths
- The Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
- NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, Liverpool, United Kingdom
- Alder Hey Children’s NHS Foundation Trust, Liverpool, United Kingdom
| | | | - David Brown
- Public Health England, London, United Kingdom
- Influenza and measles laboratory, IOC, Fiocruz, Rio de Janeiro, Brazil
| | | | - Ray Borrow
- Vaccine Evaluation Unit, Public Health England, Manchester, United Kingdom
| | - Tom Solomon
- The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
- The Institute of Infection and Global Health, University of Liverpool, Liverpool, United Kingdom
- NIHR Health Protection Research Unit in Emerging and Zoonotic Infections, University of Liverpool, Liverpool, United Kingdom
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