151
|
Yang H, Zhang N, Okoro EU, Guo Z. Transport of Apolipoprotein B-Containing Lipoproteins through Endothelial Cells Is Associated with Apolipoprotein E-Carrying HDL-Like Particle Formation. Int J Mol Sci 2018; 19:ijms19113593. [PMID: 30441770 PMCID: PMC6274886 DOI: 10.3390/ijms19113593] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/09/2018] [Accepted: 11/11/2018] [Indexed: 12/15/2022] Open
Abstract
Passage of apolipoprotein B-containing lipoproteins (apoB-LPs), i.e., triglyceride-rich lipoproteins (TRLs), intermediate-density lipoproteins (IDLs), and low-density lipoproteins (LDLs), through the endothelial monolayer occurs in normal and atherosclerotic arteries. Among these lipoproteins, TRLs and IDLs are apoE-rich apoB-LPs (E/B-LPs). Recycling of TRL-associated apoE has been shown to form apoE-carrying high-density lipoprotein (HDL)-like (HDLE) particles in many types of cells. The current report studied the formation of HDLE particles by transcytosis of apoB-LPs through mouse aortic endothelial cells (MAECs). Our data indicated that passage of radiolabeled apoB-LPs, rich or poor in apoE, through the MAEC monolayer is inhibited by filipin and unlabeled competitor lipoproteins, suggesting that MAECs transport apoB-LPs via a caveolae-mediated pathway. The cholesterol and apoE in the cell-untreated E/B-LPs, TRLs, IDLs, and LDLs distributed primarily in the low-density (LD) fractions (d ≤ 1.063). A substantial portion of the cholesterol and apoE that passed through the MAEC monolayer was allotted into the high-density (HD) (d > 1.063) fractions. In contrast, apoB was detectable only in the LD fractions before or after apoB-LPs were incubated with the MAEC monolayer, suggesting that apoB-LPs pass through the MAEC monolayer in the forms of apoB-containing LD particles and apoE-containing HD particles.
Collapse
Affiliation(s)
- Hong Yang
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA.
| | - Ningya Zhang
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA.
| | - Emmanuel U Okoro
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA.
| | - Zhongmao Guo
- Department of Microbiology, Immunology and Physiology, Meharry Medical College, Nashville, TN 37208, USA.
| |
Collapse
|
152
|
Size-controlled lipid nanoparticle production using turbulent mixing to enhance oral DNA delivery. Acta Biomater 2018; 81:195-207. [PMID: 30267888 DOI: 10.1016/j.actbio.2018.09.047] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/01/2018] [Accepted: 09/25/2018] [Indexed: 12/12/2022]
Abstract
Lipid-based nanoparticles (LNPs) have been developed to address the transport and uptake barriers to enhance the delivery efficiency of plasmid DNA therapeutics. In these systems, plasmid DNA can be encapsulated through condensation by a cationic lipid to form lipo-complexes, or polycation following complexation into cationic liposomes to form lipo-polyplexes. Conventional methods for achieving these two DNA-delivering LNP vehicles suffer from significant batch-to-batch variation, poor scalability and complicated multi-step preparation procedures. Resultant nanoparticles often have uncontrollable size and surface charge with wide distribution, and poor stability when exposed to physiological media. Here we report a single-step flash nanocomplexation (FNC) process using turbulent mixing to prepare uniform lipo-complex or lipo-polyplex LNPs in a scalable manner, demonstrating excellent control over the nanoparticle size (from 40 to several hundred nm) and surface charge, with narrow size distribution. The FNC-produced LNPs could be purified and concentrated using a tangential flow filtration (TFF) process in a scalable manner. An optimized formulation of purified lipo-complex LNPs (DOTAP/Chol/DNA, 45 nm) showed significantly higher (5-fold in the lungs and 4-fold in the liver) transgene expression activity upon oral dosage than lipo-polyplex LNPs (DPPC/Chol/lPEI/DNA, 75 nm) or lPEI/DNA nanoparticles (43 nm). Repeated dosing (4 days, 150 μg/day) of the lipo-complex LNPs sustained the transgene activity over a period of one week without detectable toxicity in major organs, suggesting its potential for clinical translation. STATEMENT OF SIGNIFICANCE: We report a new method to prepare uniform size-controlled lipid-based DNA-loaded nanoparticles by turbulent mixing delivered by a multi-inlet vortex mixer. Two distinct compositions were successfully prepared: (1) lipo-complexes, through condensation of the plasmid DNA by cationic lipids; (2) lipo-polyplexes, by encapsulation of DNA/PEI together with neutral lipids. Comparing with conventional methods, which use multi-step processes with high batch-to-batch variations and poor control over nanoparticle characteristics, this method offers a single-step, continuous and reproducible assembly methodology that would promote the translation of such gene medicine products. Effective purification and concentration of nanoparticles were achieved by adopted tangential flow filtration method. Following oral gavage in mice, the lipo-complex nanoparticles showed the highest level of transgene expression in the lung and liver.
Collapse
|
153
|
Hladky SB, Barrand MA. Elimination of substances from the brain parenchyma: efflux via perivascular pathways and via the blood-brain barrier. Fluids Barriers CNS 2018; 15:30. [PMID: 30340614 PMCID: PMC6194691 DOI: 10.1186/s12987-018-0113-6] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/30/2018] [Indexed: 02/06/2023] Open
Abstract
This review considers efflux of substances from brain parenchyma quantified as values of clearances (CL, stated in µL g-1 min-1). Total clearance of a substance is the sum of clearance values for all available routes including perivascular pathways and the blood-brain barrier. Perivascular efflux contributes to the clearance of all water-soluble substances. Substances leaving via the perivascular routes may enter cerebrospinal fluid (CSF) or lymph. These routes are also involved in entry to the parenchyma from CSF. However, evidence demonstrating net fluid flow inwards along arteries and then outwards along veins (the glymphatic hypothesis) is still lacking. CLperivascular, that via perivascular routes, has been measured by following the fate of exogenously applied labelled tracer amounts of sucrose, inulin or serum albumin, which are not metabolized or eliminated across the blood-brain barrier. With these substances values of total CL ≅ 1 have been measured. Substances that are eliminated at least partly by other routes, i.e. across the blood-brain barrier, have higher total CL values. Substances crossing the blood-brain barrier may do so by passive, non-specific means with CLblood-brain barrier values ranging from < 0.01 for inulin to > 1000 for water and CO2. CLblood-brain barrier values for many small solutes are predictable from their oil/water partition and molecular weight. Transporters specific for glucose, lactate and many polar substrates facilitate efflux across the blood-brain barrier producing CLblood-brain barrier values > 50. The principal route for movement of Na+ and Cl- ions across the blood-brain barrier is probably paracellular through tight junctions between the brain endothelial cells producing CLblood-brain barrier values ~ 1. There are large fluxes of amino acids into and out of the brain across the blood-brain barrier but only small net fluxes have been observed suggesting substantial reuse of essential amino acids and α-ketoacids within the brain. Amyloid-β efflux, which is measurably faster than efflux of inulin, is primarily across the blood-brain barrier. Amyloid-β also leaves the brain parenchyma via perivascular efflux and this may be important as the route by which amyloid-β reaches arterial walls resulting in cerebral amyloid angiopathy.
Collapse
Affiliation(s)
- Stephen B. Hladky
- Department of Pharmacology, University of Cambridge, Cambridge, CB2 1PD UK
| | - Margery A. Barrand
- Department of Pharmacology, University of Cambridge, Cambridge, CB2 1PD UK
| |
Collapse
|
154
|
Crewe C, Joffin N, Rutkowski JM, Kim M, Zhang F, Towler DA, Gordillo R, Scherer PE. An Endothelial-to-Adipocyte Extracellular Vesicle Axis Governed by Metabolic State. Cell 2018; 175:695-708.e13. [PMID: 30293865 DOI: 10.1016/j.cell.2018.09.005] [Citation(s) in RCA: 274] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 07/02/2018] [Accepted: 09/04/2018] [Indexed: 01/08/2023]
Abstract
We have uncovered the existence of extracellular vesicle (EV)-mediated signaling between cell types within the adipose tissue (AT) proper. This phenomenon became evident in our attempts at generating an adipocyte-specific knockout of caveolin 1 (cav1) protein. Although we effectively ablated the CAV1 gene in adipocytes, cav1 protein remained abundant. With the use of newly generated mouse models, we show that neighboring endothelial cells (ECs) transfer cav1-containing EVs to adipocytes in vivo, which reciprocate by releasing EVs to ECs. AT-derived EVs contain proteins and lipids capable of modulating cellular signaling pathways. Furthermore, this mechanism facilitates transfer of plasma constituents from ECs to the adipocyte. The transfer event is physiologically regulated by fasting/refeeding and obesity, suggesting EVs participate in the tissue response to changes in the systemic nutrient state. This work offers new insights into the complex signaling mechanisms that exist among adipocytes, stromal vascular cells, and, potentially, distal organs.
Collapse
Affiliation(s)
- Clair Crewe
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nolwenn Joffin
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Joseph M Rutkowski
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Min Kim
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA; Cardiovascular and Metabolic Disease Center (CMDC), Inje University, Busan, South Korea
| | - Fang Zhang
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA; Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China
| | - Dwight A Towler
- Department of Internal Medicine, Endocrine Division, the University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ruth Gordillo
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, the University of Texas Southwestern Medical Center, Dallas, TX, USA.
| |
Collapse
|
155
|
Räder AFB, Weinmüller M, Reichart F, Schumacher-Klinger A, Merzbach S, Gilon C, Hoffman A, Kessler H. Orally Active Peptides: Is There a Magic Bullet? Angew Chem Int Ed Engl 2018; 57:14414-14438. [DOI: 10.1002/anie.201807298] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Andreas F. B. Räder
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| | - Michael Weinmüller
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| | - Florian Reichart
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| | | | - Shira Merzbach
- The Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Chaim Gilon
- The Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Amnon Hoffman
- The Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Horst Kessler
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstrasse 4 85748 Garching Germany
| |
Collapse
|
156
|
Räder AFB, Weinmüller M, Reichart F, Schumacher-Klinger A, Merzbach S, Gilon C, Hoffman A, Kessler H. Oral aktive Peptide: Gibt es ein Patentrezept? Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807298] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Andreas F. B. Räder
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Michael Weinmüller
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Florian Reichart
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| | | | - Shira Merzbach
- Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Chaim Gilon
- Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Amnon Hoffman
- Hebrew University of Jerusalem; Institutes of Chemistry and Drug Research; Israel
| | - Horst Kessler
- Technische Universität München; Department Chemie; Institute for Advanced Study; Lichtenbergstraße 4 85748 Garching Deutschland
| |
Collapse
|
157
|
CTRP5 promotes transcytosis and oxidative modification of low-density lipoprotein and the development of atherosclerosis. Atherosclerosis 2018; 278:197-209. [PMID: 30300788 DOI: 10.1016/j.atherosclerosis.2018.09.037] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/05/2018] [Accepted: 09/26/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND AND AIMS Increased transcytosis of low-density lipoprotein (LDL) across the endothelium and oxidation of LDL deposited within the subendothelial space are crucial early events in atherogenesis. C1q/TNF-related protein (CTRP) 5 is a novel secreted glycoprotein and its biological functions are largely undefined. METHODS Expression of CTRP5 was analyzed in sera and atherosclerotic plaques of patients with coronary artery disease (CAD). The role of CTRP5 in atherogenesis was investigated in vitro and in vivo. RESULTS We found CTRP5 serum levels were higher in patients with than without CAD (247.26 ± 61.71 vs. 167.81 ± 68.08 ng/mL, p < 0.001), and were positively correlated with the number of diseased vessels (Spearman's r = 0.611, p < 0.001). Increased expression of CTRP5 was detected in human coronary endarterectomy specimens as compared to non-atherosclerotic arteries. Immunofluorescence further showed that CTRP5 was predominantly localized in the endothelium, infiltrated macrophages and smooth muscle cells in the neointima. In vivo and in vitro experiments demonstrated that CTRP5 promoted transcytosis of LDL across endothelial monolayers, as well as the oxidative modification of LDL in endothelial cells. Mechanistically, we found that CTRP5 up-regulated 12/15-lipoxygenase (LOX), a key enzyme in mediating LDL trafficking and oxidation, through STAT6 signaling. Genetic or pharmacological inhibition of 12/15-LOX dramatically attenuated the deposition of oxidized LDL in the subendothelial space and the development of atherosclerosis. CONCLUSIONS These data indicate that CTRP5 is a novel pro-atherogenic cytokine and promotes transcytosis and oxidation of LDL in endothelial cells via up-regulation of 12/15-LOX.
Collapse
|
158
|
Striz AC, Stephan AP, López-Coral A, Tuma PL. Rab17 regulates apical delivery of hepatic transcytotic vesicles. Mol Biol Cell 2018; 29:2887-2897. [PMID: 30256711 PMCID: PMC6249867 DOI: 10.1091/mbc.e18-07-0433] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
A major focus for our laboratory is identifying the molecules and mechanisms that regulate basolateral-to-apical transcytosis in polarized hepatocytes. Our most recent studies have focused on characterizing the biochemical and functional properties of the small rab17 GTPase. We determined that rab17 is a monosumoylated protein and that this modification likely mediates selective interactions with the apically located syntaxin 2. Using polarized hepatic WIF-B cells exogenously expressing wild-type, dominant active/guanosine triphosphate (GTP)-bound, dominant negative/guanosine diphosphate (GDP)-bound, or sumoylation-deficient/K68R rab17 proteins, we confirmed that rab17 regulates basolateral-to-apical transcytotic vesicle docking and fusion with the apical surface. We further confirmed that transcytosis is impaired from the subapical compartment to the apical surface and that GTP-bound and sumoylated rab17 are likely required for apical vesicle docking. Because expression of the GTP-bound rab17 led to impaired transcytosis, whereas wild type had no effect, we further propose that rab17 GTP hydrolysis is required for vesicle delivery. We also determined that transcytosis of three classes of newly synthesized apical residents showed similar responses to rab17 mutant expression, indicating that rab17 is a general component of the transcytotic machinery required for apically destined vesicle docking and fusion.
Collapse
Affiliation(s)
- Anneliese C Striz
- Department of Biology, The Catholic University of America, Washington, DC 20064
| | - Anna P Stephan
- Department of Biology, The Catholic University of America, Washington, DC 20064
| | - Alfonso López-Coral
- Department of Biology, The Catholic University of America, Washington, DC 20064
| | - Pamela L Tuma
- Department of Biology, The Catholic University of America, Washington, DC 20064
| |
Collapse
|
159
|
A Serine/Threonine Kinase 16-Based Phospho-Proteomics Screen Identifies WD Repeat Protein-1 As A Regulator Of Constitutive Secretion. Sci Rep 2018; 8:13049. [PMID: 30158666 PMCID: PMC6115458 DOI: 10.1038/s41598-018-31426-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 08/14/2018] [Indexed: 01/03/2023] Open
Abstract
The plasma membrane of polarized hepatocytes is functionally divided into two domains: the apical and basolateral. Our focus is to define the molecular basis of polarized protein sorting of newly-synthesized membrane and secretory proteins in WIF-B cells, an excellent model system for polarized hepatocytes. We determined that MAL2 (myelin and lymphocyte protein 2) and its binding partner, serine/threonine kinase 16 (STK16) regulate basolateral constitutive secretion. Because STK16 is a constitutively active kinase, we reasoned that constitutively phosphorylated substrates must participate in constitutive secretion. To identify either STK16 substrates or other proteins that regulate constitutive secretion, we took a proteomics approach. Post-nuclear supernatants from cells expressing wild type or a kinase-dead (E202A) STK16 were separated on 2D gels and immunoblotted with antibodies against phospho-serine/threonine residues. Sixteen spots were identified from E202A-expressing cells that reproducibly displayed decreased immunoreactivity. From these spots, 28 proteins were identified as possible STK16 substrates. Out of these 28 possible substrates, 25% of them encode predicted STK16 phosphorylation consensus sites, with WD repeat containing protein-1 (WDR1) encoding two such sites. Based on this finding and on the finding that actin remodeling is required for hepatic secretion, we further confirmed that WDR1 is a phosphoprotein that regulates secretion.
Collapse
|
160
|
Wu L, Bai Y, Liu M, Li L, Shan W, Zhang Z, Huang Y. Transport Mechanisms of Butyrate Modified Nanoparticles: Insight into “Easy Entry, Hard Transcytosis” of Active Targeting System in Oral Administration. Mol Pharm 2018; 15:4273-4283. [PMID: 30102863 DOI: 10.1021/acs.molpharmaceut.8b00713] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lei Wu
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Yuli Bai
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Min Liu
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Lian Li
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Wei Shan
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Zhirong Zhang
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| | - Yuan Huang
- Key Laboratory of Drug Targeting and Drug Delivery System, Ministry of Education, West China School of Pharmacy, Sichuan University, No. 17, Block 3, Southern Renmin Road, Chengdu 610041, P.R. China
| |
Collapse
|
161
|
Simmons S, Erfinanda L, Bartz C, Kuebler WM. Novel mechanisms regulating endothelial barrier function in the pulmonary microcirculation. J Physiol 2018; 597:997-1021. [PMID: 30015354 DOI: 10.1113/jp276245] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Accepted: 05/25/2018] [Indexed: 12/11/2022] Open
Abstract
The pulmonary epithelial and vascular endothelial cell layers provide two sequential physical and immunological barriers that together form a semi-permeable interface and prevent alveolar and interstitial oedema formation. In this review, we focus specifically on the continuous endothelium of the pulmonary microvascular bed that warrants strict control of the exchange of gases, fluid, solutes and circulating cells between the plasma and the interstitial space. The present review provides an overview of emerging molecular mechanisms that permit constant transcellular exchange between the vascular and interstitial compartment, and cause, prevent or reverse lung endothelial barrier failure under experimental conditions, yet with a clinical perspective. Based on recent findings and at times seemingly conflicting results we discuss emerging paradigms of permeability regulation by altered ion transport as well as shifts in the homeostasis of sphingolipids, angiopoietins and prostaglandins.
Collapse
Affiliation(s)
- Szandor Simmons
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Lasti Erfinanda
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Christoph Bartz
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Wolfgang M Kuebler
- Institute of Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany.,Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, ON, Canada.,Departments of Surgery and Physiology, University of Toronto, Toronto, ON, Canada
| |
Collapse
|
162
|
Muro S. Alterations in Cellular Processes Involving Vesicular Trafficking and Implications in Drug Delivery. Biomimetics (Basel) 2018; 3:biomimetics3030019. [PMID: 31105241 PMCID: PMC6352689 DOI: 10.3390/biomimetics3030019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Revised: 07/09/2018] [Accepted: 07/10/2018] [Indexed: 12/31/2022] Open
Abstract
Endocytosis and vesicular trafficking are cellular processes that regulate numerous functions required to sustain life. From a translational perspective, they offer avenues to improve the access of therapeutic drugs across cellular barriers that separate body compartments and into diseased cells. However, the fact that many factors have the potential to alter these routes, impacting our ability to effectively exploit them, is often overlooked. Altered vesicular transport may arise from the molecular defects underlying the pathological syndrome which we aim to treat, the activity of the drugs being used, or side effects derived from the drug carriers employed. In addition, most cellular models currently available do not properly reflect key physiological parameters of the biological environment in the body, hindering translational progress. This article offers a critical overview of these topics, discussing current achievements, limitations and future perspectives on the use of vesicular transport for drug delivery applications.
Collapse
Affiliation(s)
- Silvia Muro
- Institute for Bioscience and Biotechnology Research and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA.
- Catalan Institution for Research and Advanced Studies (ICREA), 08010 Barcelona, Spain.
- Institute for Bioengineering of Catalonia (IBEC) of the Barcelona Institute of Science and Technology (BIST), 08028 Barcelona, Spain.
| |
Collapse
|
163
|
Villaseñor R, Schilling M, Sundaresan J, Lutz Y, Collin L. Sorting Tubules Regulate Blood-Brain Barrier Transcytosis. Cell Rep 2018; 21:3256-3270. [PMID: 29241551 DOI: 10.1016/j.celrep.2017.11.055] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 09/08/2017] [Accepted: 11/15/2017] [Indexed: 11/25/2022] Open
Abstract
Transcytosis across the blood-brain barrier (BBB) regulates key processes of the brain, but the intracellular sorting mechanisms that determine successful receptor-mediated transcytosis in brain endothelial cells (BECs) remain unidentified. Here, we used Transferrin receptor-based Brain Shuttle constructs to investigate intracellular transport in BECs, and we uncovered a pathway for the regulation of receptor-mediated transcytosis. By combining live-cell imaging and mathematical modeling in vitro with super-resolution microscopy of the BBB, we show that intracellular tubules promote transcytosis across the BBB. A monovalent construct (sFab) sorted for transcytosis was localized to intracellular tubules, whereas a bivalent construct (dFab) sorted for degradation formed clusters with impaired transport along tubules. Manipulating tubule biogenesis by overexpressing the small GTPase Rab17 increased dFab transport into tubules and induced its transcytosis in BECs. We propose that sorting tubules regulate transcytosis in BECs and may be a general mechanism for receptor-mediated transport across the BBB.
Collapse
Affiliation(s)
- Roberto Villaseñor
- Roche Pharma Research and Early Development (pRED), Neuro-Immunology, Roche Innovation Center Basel, Switzerland
| | - Michael Schilling
- Roche Pharma Research and Early Development (pRED), Neuro-Immunology, Roche Innovation Center Basel, Switzerland
| | - Janani Sundaresan
- Roche Pharma Research and Early Development (pRED), Neuro-Immunology, Roche Innovation Center Basel, Switzerland
| | - Yves Lutz
- Imaging Centre, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Illkirch-Graffenstaden, France
| | - Ludovic Collin
- Roche Pharma Research and Early Development (pRED), Neuro-Immunology, Roche Innovation Center Basel, Switzerland.
| |
Collapse
|
164
|
Kinoshita Y, Nogami K, Jomura R, Akanuma SI, Abe H, Inouye M, Kubo Y, Hosoya KI. Investigation of Receptor-Mediated Cyanocobalamin (Vitamin B 12) Transport across the Inner Blood-Retinal Barrier Using Fluorescence-Labeled Cyanocobalamin. Mol Pharm 2018; 15:3583-3594. [PMID: 29966424 DOI: 10.1021/acs.molpharmaceut.8b00617] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The blood-to-retina supply of cyanocobalamin (vitamin B12) across the blood-retinal barrier (BRB) was investigated by synthesizing a fluorescence-labeled cyanocobalamin (Cy5-cyanocobalamin). In the in vivo analysis following internal jugular injection of Cy5-cyanocobalamin, confocal microscopy showed the distribution of Cy5-cyanocobalamin in the inner plexiform layer (IPL), the outer plexiform layer (OPL), and the retinal pigment epithelium (RPE). In the in vitro analysis with TR-iBRB2 cells, an in vitro model cell line of the inner BRB, Cy5-cyanocobalamin uptake by TR-iBRB2 cells exhibited a time-dependent increase after preincubation with transcobalamin II (TCII) protein, during its residual uptake without preincubation with TCII protein. The Cy5-cyanocobalamin uptake by TR-iBRB2 cells was significantly reduced in the presence of unlabeled cyanocobalamin, chlorpromazine, and chloroquine and was also significantly reduced under Ca2+-free conditions. Confocal microscopy of the TR-iBRB2 cells showed fluorescence signals of Cy5-cyanocobalamin and GFP-TCII protein, and these signals merged with each other. The RT-PCR, Western blot, and immunohistochemistry clearly suggested the expression of TCII receptor (TCII-R) in the inner and outer BRB. These results suggested the involvement of receptor-mediated endocytosis in the blood-to-retina transport of cyanocobalamin at the inner BRB with implying its possible involvement at the outer BRB.
Collapse
Affiliation(s)
- Yuri Kinoshita
- Department of Pharmaceutics and ‡Department of Chemical Biology, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama 930-0194 , Japan
| | | | - Ryuta Jomura
- Department of Pharmaceutics and ‡Department of Chemical Biology, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama 930-0194 , Japan
| | - Shin-Ichi Akanuma
- Department of Pharmaceutics and ‡Department of Chemical Biology, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama 930-0194 , Japan
| | | | | | - Yoshiyuki Kubo
- Department of Pharmaceutics and ‡Department of Chemical Biology, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama 930-0194 , Japan
| | - Ken-Ichi Hosoya
- Department of Pharmaceutics and ‡Department of Chemical Biology, Graduate School of Medicine and Pharmaceutical Sciences , University of Toyama , Toyama 930-0194 , Japan
| |
Collapse
|
165
|
Ho YT, Kamm RD, Kah JCY. Influence of protein corona and caveolae-mediated endocytosis on nanoparticle uptake and transcytosis. NANOSCALE 2018; 10:12386-12397. [PMID: 29926047 DOI: 10.1039/c8nr02393j] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Transcytosis of nanoparticles (NPs) is emerging as an attractive alternative to the paracellular route in cancer drug delivery with studies suggesting targeting caveolae-mediated endocytosis to maximize NP transcytosis. However, there are limited studies on transcytosis of NPs, especially for corona-coated NPs. Most studies focused on cellular uptake as an indirect measure of the NP's transcellular permeability (Pd). Here, we probed the effect of protein corona on the uptake and transcytosis of 20, 40, 100, and 200 nm polystyrene nanoparticles (pNP-PC) across HUVECs in a microfluidic channel that modelled the microvasculature. We observed increased cell uptake with size of pNP-PC although it was the smallest 20 nm pNP-PC that exhibited the highest transcellular Pd. In the absence of corona however, cell uptake decreased with size, and the largest 200 nm pNP-PEG exhibited the lowest transcellular Pd. By inhibiting caveolae-mediated endocytosis in HUVECs, smaller pNPs had a larger drop in cell uptake than larger pNPs, regardless of surface coating. However, only the smallest (20 nm) and largest (200 nm) pNP-PC had a decrease in Pd following inhibition with MβCD. Our findings showed that the protein corona affected the transcytosis of NPs, and their uptake by caveolae-mediated endocytosis did not necessarily lead to transcytosis.
Collapse
Affiliation(s)
- Yan Teck Ho
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore.
| | | | | |
Collapse
|
166
|
Garcia-Castillo MD, Chinnapen DJF, Te Welscher YM, Gonzalez RJ, Softic S, Pacheco M, Mrsny RJ, Kahn CR, von Andrian UH, Lau J, Pentelute BL, Lencer WI. Mucosal absorption of therapeutic peptides by harnessing the endogenous sorting of glycosphingolipids. eLife 2018; 7:34469. [PMID: 29851380 PMCID: PMC5980230 DOI: 10.7554/elife.34469] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 04/26/2018] [Indexed: 12/24/2022] Open
Abstract
Transport of biologically active molecules across tight epithelial barriers is a major challenge preventing therapeutic peptides from oral drug delivery. Here, we identify a set of synthetic glycosphingolipids that harness the endogenous process of intracellular lipid-sorting to enable mucosal absorption of the incretin hormone GLP-1. Peptide cargoes covalently fused to glycosphingolipids with ceramide domains containing C6:0 or smaller fatty acids were transported with 20-100-fold greater efficiency across epithelial barriers in vitro and in vivo. This was explained by structure-function of the ceramide domain in intracellular sorting and by the affinity of the glycosphingolipid species for insertion into and retention in cell membranes. In mice, GLP-1 fused to short-chain glycosphingolipids was rapidly and systemically absorbed after gastric gavage to affect glucose tolerance with serum bioavailability comparable to intraperitoneal injection of GLP-1 alone. This is unprecedented for mucosal absorption of therapeutic peptides, and defines a technology with many other clinical applications.
Collapse
Affiliation(s)
| | - Daniel J-F Chinnapen
- Division of Gastroenterology, Boston Children's Hospital, Boston, United States.,Department of Pediatrics, Harvard Medical School, Boston, United States.,Harvard Digestive Diseases Center, Boston, United States
| | | | - Rodrigo J Gonzalez
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, United States.,Center for Immune Imaging, Harvard Medical School, Boston, United States
| | - Samir Softic
- Joslin Diabetes Center and Harvard Medical School, Boston, United States
| | - Michele Pacheco
- Division of Gastroenterology, Boston Children's Hospital, Boston, United States
| | - Randall J Mrsny
- Department of Pharmacy and Pharmacology, Univeristy of Bath, Bath, United Kingdom
| | - C Ronald Kahn
- Joslin Diabetes Center and Harvard Medical School, Boston, United States
| | - Ulrich H von Andrian
- Department of Microbiology and Immunobiology, Harvard Medical School, Boston, United States.,Center for Immune Imaging, Harvard Medical School, Boston, United States
| | | | - Bradley L Pentelute
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, United States
| | - Wayne I Lencer
- Division of Gastroenterology, Boston Children's Hospital, Boston, United States.,Harvard Digestive Diseases Center, Boston, United States.,Department of Pediatrics, Harvard Medical School, Boston, United States
| |
Collapse
|
167
|
Landa SB, Korabliov PV, Semenova EV, Filatov MV. Peculiarities of the formation and subsequent removal of the circulating immune complexes from the bloodstream during the process of digestion. F1000Res 2018; 7:618. [PMID: 30079242 PMCID: PMC6058468 DOI: 10.12688/f1000research.14406.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/10/2018] [Indexed: 12/24/2022] Open
Abstract
Background: Large protein aggregates, known as circulating immune complexes (CICs), are formed in biological fluids as a result of the development of the body's immune response to various provoking factors. The kinetic characteristics of the formation and removal of immune complexes (ICs), their physical parameters, the isotypic composition of immunoglobulins (Igs) and the antigenic component of the CICs may reflect certain aspects of certain pathological and metabolic processes taking place in humans and animals. The aim of this study is to assess the kinetic characteristics of the formation and removal of the CICs that form in blood after eating. We also analyze the changes in the isotypic composition of Igs of ICs that accompany this biological process in rodents and humans. Methods: We identified the CICs, which differed in size and class of Igs, using dynamic light scattering. To remove ICs from the plasma, we used immune-affinity sedimentation. Monoclonal antibodies for the Igs of different isotypes were added to the plasma samples to determine the isotypic composition of the ICs. Results: A large number of ICs were formed in the blood of rats and humans after eating (food CICs). In rats, food ICs are almost immediately filtered in the liver, without circulating in the bloodstream through the body. In humans, the level of food ICs in the blood increases for 3.5 h after ingestion, then within 7-8 h their gradual removal takes place. It was found that in the process of digestion in humans, the isotypic composition of Igs in the CICs changes and becomes more diverse. Conclusions: The molecular-cellular mechanisms of the formation and utilization of food CICs in humans and rodents do not match completely.
Collapse
Affiliation(s)
- Sergej B. Landa
- Division of Molecular and Radiation Biophysics, National Research Center , Gatchina, 188300, Russian Federation
| | - Pavel V. Korabliov
- State Research Institute Center for Innovative Medicine, Vilnius, LT-01102, Lithuania
| | - Elena V. Semenova
- Division of Molecular and Radiation Biophysics, National Research Center , Gatchina, 188300, Russian Federation
| | - Michael V. Filatov
- Division of Molecular and Radiation Biophysics, National Research Center , Gatchina, 188300, Russian Federation
- Saint Petersburg State Research Institute of Phthisiopulmonology of the Ministry of Healthcare of the Russian Federation, Saint Petersburg, 191036, Russian Federation
| |
Collapse
|
168
|
Hannibal L, Bolisetty K, Axhemi A, DiBello PM, Quadros EV, Fedosov S, Jacobsen DW. Transcellular transport of cobalamin in aortic endothelial cells. FASEB J 2018; 32:5506-5519. [PMID: 29741927 DOI: 10.1096/fj.201701141rr] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cobalamin [Cbl (or B12)] deficiency causes megaloblastic anemia and a variety of neuropathies. However, homeostatic mechanisms of cyanocobalamin (CNCbl) and other Cbls by vascular endothelial cells are poorly understood. Herein, we describe our investigation into whether cultured bovine aortic endothelial cells (BAECs) perform transcytosis of B12, namely, the complex formed between serum transcobalamin and B12, designated as holo-transcobalamin (holo-TC). We show that cultured BAECs endocytose [57Co]-CNCbl-TC (source material) via the CD320 receptor. The bound Cbl is transported across the cell both via exocytosis in its free form, [57Co]-CNCbl, and via transcytosis as [57Co]-CNCbl-TC. Transcellular mobilization of Cbl occurred in a bidirectional manner. A portion of the endocytosed [57Co]-CNCbl was enzymatically processed by methylmalonic aciduria combined with homocystinuria type C (cblC) with subsequent formation of hydroxocobalamin, methylcobalamin, and adenosylcobalamin, which were also transported across the cell in a bidirectional manner. This demonstrates that transport mechanisms for Cbl in vascular endothelial cells do not discriminate between various β-axial ligands of the vitamin. Competition studies with apoprotein- and holo-TC and holo-intrinsic factor showed that only holo-TC was effective at inhibiting transcellular transport of Cbl. Incubation of BAECs with a blocking antibody against the extracellular domain of the CD320 receptor inhibited uptake and transcytosis by ∼40%. This study reveals that endothelial cells recycle uncommitted intracellular Cbl for downstream usage by other cell types and suggests that the endothelium is self-sufficient for the specific acquisition and subsequent distribution of circulating B12 via the CD320 receptor. We posit that the endothelial lining of the vasculature is an essential component for the maintenance of serum-tissue homeostasis of B12.-Hannibal, L., Bolisetty, K., Axhemi, A., DiBello, P. M., Quadros, E. V., Fedosov, S., Jacobsen, D. W. Transcellular transport of cobalamin in aortic endothelial cells.
Collapse
Affiliation(s)
- Luciana Hannibal
- Laboratory of Clinical Biochemistry and Metabolism, Department for Pediatrics, Medical Center, University of Freiburg, Freiburg, Germany.,Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Keerthana Bolisetty
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Armend Axhemi
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Patricia M DiBello
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Edward V Quadros
- Department of Medicine, State University of New York (SUNY) Downstate Medical Center, Brooklyn, New York, USA; and
| | - Sergey Fedosov
- Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Donald W Jacobsen
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, USA
| |
Collapse
|
169
|
Reinholz J, Diesler C, Schöttler S, Kokkinopoulou M, Ritz S, Landfester K, Mailänder V. Protein machineries defining pathways of nanocarrier exocytosis and transcytosis. Acta Biomater 2018. [PMID: 29530823 DOI: 10.1016/j.actbio.2018.03.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The transport of nanocarriers through barriers like the gut in a living organism involves the transcytosis of these nanocarriers through the cell layer dividing two compartments. Understanding how this process works is not only essential to further developing strategies for a more effective nanocarrier transport system but also for providing fundamental insights into the barrier function as a means of protection against micro- and nanoplastics in the food chain. We therefore set out to investigate the different uptake mechanisms, intracellular trafficking and the routes for exocytosis for small polystyrene nanoparticles (PS-NPs ca. 100 nm) as mimicking nanocarriers in a Caco-2 cell model for gut-blood transition. We used label-free, quantitative mass spectrometry (MS) for determining the proteome that adhered to transversed nanoparticles. From this rich proteomics dataset, as well as previous studies, we generated stable-transfected Caco-2 cell lines carrying the green fluorescent protein (GFP) coupled to proteins of interest for uptake, early, late and exocytotic endosomes. We detected the spatial and temporal overlap of such marked endosomes with the nanocarrier signal in confocal laser scanning and super-resolution microscopy. There was a clear distinction in the time course of nanoparticle trafficking between groups of proteins for endocytosis, intracellular storage and putatively transcytosis and we identified several key transcytotic markers like Rab3 and Copine1. Moreover, we postulate the necessity of a certain protein composition on endosomes for successful transcytosis of nanocarriers. Finally, we define the two-sided impasse of the lysosome as a dead end for nano-plastic and the limit of nanocarriers in the 100 nm range. STATEMENT OF SIGNIFICANCE Here we focus on mechanisms of transcytosis and how we can follow these with methods not used before. First, we use mass spectrometry of transcytosed nanoparticles to pick proteins of the transcytosis machinery describing key proteins involved. We can detect the complex mixtures of proteins. As this is a dynamic process involving whole families of proteins interacting with each other and as this is an orchestrated process we coined the term protein machineries for this active interplay. By genetically modifying the proteins attaching GFP we are able to follow the transcytosis pathway. We evaluate the process in a quantitative manner over time. This reveals that the most obvious obstacle to transcytosis is a routing of the nanocarriers to the lysosomes.
Collapse
|
170
|
Scott-Solomon E, Kuruvilla R. Mechanisms of neurotrophin trafficking via Trk receptors. Mol Cell Neurosci 2018; 91:25-33. [PMID: 29596897 DOI: 10.1016/j.mcn.2018.03.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/19/2018] [Accepted: 03/26/2018] [Indexed: 12/31/2022] Open
Abstract
In neurons, long-distance communication between axon terminals and cell bodies is a critical determinant in establishing and maintaining neural circuits. Neurotrophins are soluble factors secreted by post-synaptic target tissues that retrogradely control axon and dendrite growth, survival, and synaptogenesis of innervating neurons. Neurotrophins bind Trk receptor tyrosine kinases in axon terminals to promote endocytosis of ligand-bound phosphorylated receptors into signaling endosomes. Trk-harboring endosomes function locally in axons to acutely promote growth events, and can also be retrogradely transported long-distances to remote cell bodies and dendrites to stimulate cytoplasmic and transcriptional signaling necessary for neuron survival, morphogenesis, and maturation. Neuronal responsiveness to target-derived neurotrophins also requires the precise axonal targeting of newly synthesized Trk receptors. Recent studies suggest that anterograde delivery of Trk receptors is regulated by retrograde neurotrophin signaling. In this review, we summarize current knowledge on the functions and mechanisms of retrograde trafficking of Trk signaling endosomes, and highlight recent discoveries on the forward trafficking of nascent receptors.
Collapse
Affiliation(s)
- Emily Scott-Solomon
- Department of Biology, Johns Hopkins University, 3400 N. Charles St, 227 Mudd Hall, Baltimore, MD 21218, USA
| | - Rejji Kuruvilla
- Department of Biology, Johns Hopkins University, 3400 N. Charles St, 227 Mudd Hall, Baltimore, MD 21218, USA.
| |
Collapse
|
171
|
Ho YT, Lee SWL, Azman N'A, Loh FWY, Phan Thien N, Kah JCY. Quantifying Vascular Distribution and Adhesion of Nanoparticles with Protein Corona in Microflow. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3731-3741. [PMID: 29502417 DOI: 10.1021/acs.langmuir.8b00322] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The protein corona has emerged as an important determinant of biological response in nanoparticle (NP) drug delivery. However, there is presently no reported study on how the protein corona affects the behavior of NPs in microflow and its subsequent interactions with the vascular endothelium, which could affect their delivery to the target tumor site regardless of its targeting mechanism. Furthermore, a consensus on the role of physical and surface characteristics of NPs in affecting the margination of NPs is lacking due to different methods of quantifying margination. In this study, we examine how the particle adhesion (PA) method and particle distribution (PD) method quantify the margination of 20, 40, 100, and 200 nm polystyrene NPs (pNPs) differently in fibronectin or pluronic F-127-coated microfluidic straight channels. We found that PA reduced with increasing pNP size, whereas the PD was similar across all pNP sizes regardless of channel coating. We then formed a protein corona on all pNPs (pNPs-PC) and found that the protein corona increased the adhesion of 40-200 nm pNPs in fibronectin-coated channels, with no size dependence between them except for 40 nm, which had significantly higher particle adhesion. The PA method was also dependent on channel coating, whereas the PD method was independent of channel coating. These results suggested that the PA method was more amenable to surface interactions between the pNPs and the channel wall while providing a measure of the amount of NPs that interacted with the channel walls, whereas the PD method provided a representation of their distribution across the channel due to margination. The two methods complement each other to elucidate a more holistic understanding of how different factors might affect a NP's margination in future studies.
Collapse
Affiliation(s)
| | - Sharon Wei Ling Lee
- BioSystems and Micromechanics Interdisciplinary Research Group , Singapore-MIT Alliance for Research and Technology , Singapore 138602
| | | | | | | | | |
Collapse
|
172
|
Reifarth M, Hoeppener S, Schubert US. Uptake and Intracellular Fate of Engineered Nanoparticles in Mammalian Cells: Capabilities and Limitations of Transmission Electron Microscopy-Polymer-Based Nanoparticles. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30. [PMID: 29325211 DOI: 10.1002/adma.201703704] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 08/14/2017] [Indexed: 06/07/2023]
Abstract
In order to elucidate mechanisms of nanoparticle (NP)-cell interactions, a detailed knowledge about membrane-particle interactions, intracellular distributions, and nucleus penetration capabilities, etc. becomes indispensable. The utilization of NPs as additives in many consumer products, as well as the increasing interest of tailor-made nanoobjects as novel therapeutic and diagnostic platforms, makes it essential to gain deeper insights about their biological effects. Transmission electron microscopy (TEM) represents an outstanding method to study the uptake and intracellular fate of NPs, since this technique provides a resolution far better than the particle size. Additionally, its capability to highlight ultrastructural details of the cellular interior as well as membrane features is unmatched by other approaches. Here, a summary is provided on studies utilizing TEM to investigate the uptake and mode-of-action of tailor-made polymer nanoparticles in mammalian cells. For this purpose, the capabilities as well as limitations of TEM investigations are discussed to provide a detailed overview on uptake studies of common nanoparticle systems supported by TEM investigations. Furthermore, methodologies that can, in particular, address low-contrast materials in electron microscopy, i.e., polymeric and polymer-modified nanoparticles, are highlighted.
Collapse
Affiliation(s)
- Martin Reifarth
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany
- Jena Center of Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Stephanie Hoeppener
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany
- Jena Center of Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Ulrich S Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743, Jena, Germany
- Jena Center of Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| |
Collapse
|
173
|
David M, Lécorché P, Masse M, Faucon A, Abouzid K, Gaudin N, Varini K, Gassiot F, Ferracci G, Jacquot G, Vlieghe P, Khrestchatisky M. Identification and characterization of highly versatile peptide-vectors that bind non-competitively to the low-density lipoprotein receptor for in vivo targeting and delivery of small molecules and protein cargos. PLoS One 2018; 13:e0191052. [PMID: 29485998 PMCID: PMC5828360 DOI: 10.1371/journal.pone.0191052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Accepted: 12/27/2017] [Indexed: 01/09/2023] Open
Abstract
Insufficient membrane penetration of drugs, in particular biotherapeutics and/or low target specificity remain a major drawback in their efficacy. We propose here the rational characterization and optimization of peptides to be developed as vectors that target cells expressing specific receptors involved in endocytosis or transcytosis. Among receptors involved in receptor-mediated transport is the LDL receptor. Screening complex phage-displayed peptide libraries on the human LDLR (hLDLR) stably expressed in cell lines led to the characterization of a family of cyclic and linear peptides that specifically bind the hLDLR. The VH411 lead cyclic peptide allowed endocytosis of payloads such as the S-Tag peptide or antibodies into cells expressing the hLDLR. Size reduction and chemical optimization of this lead peptide-vector led to improved receptor affinity. The optimized peptide-vectors were successfully conjugated to cargos of different nature and size including small organic molecules, siRNAs, peptides or a protein moiety such as an Fc fragment. We show that in all cases, the peptide-vectors retain their binding affinity to the hLDLR and potential for endocytosis. Following i.v. administration in wild type or ldlr-/- mice, an Fc fragment chemically conjugated or fused in C-terminal to peptide-vectors showed significant biodistribution in LDLR-enriched organs. We have thus developed highly versatile peptide-vectors endowed with good affinity for the LDLR as a target receptor. These peptide-vectors have the potential to be further developed for efficient transport of therapeutic or imaging agents into cells -including pathological cells-or organs that express the LDLR.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Karine Varini
- VECT-HORUS SAS, Marseille, France
- Aix Marseille Univ, CNRS, NICN, Marseille, France
| | | | - Géraldine Ferracci
- Aix Marseille Univ, CNRS, CRN2M, Marseille, France
- Aix Marseille Univ, CNRS, INP, Inst Neurophysiopathol, Marseille, France
| | | | | | - Michel Khrestchatisky
- Aix Marseille Univ, CNRS, NICN, Marseille, France
- Aix Marseille Univ, CNRS, INP, Inst Neurophysiopathol, Marseille, France
| |
Collapse
|
174
|
Transport mechanism of lipid covered saquinavir pure drug nanoparticles in intestinal epithelium. J Control Release 2018; 269:159-170. [DOI: 10.1016/j.jconrel.2017.11.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 11/04/2017] [Accepted: 11/09/2017] [Indexed: 12/13/2022]
|
175
|
Abstract
Hypothalamic integration of gastrointestinal and adipose tissue-derived hormones serves as a key element of neuroendocrine control of food intake. Leptin, adiponectin, oleoylethanolamide, cholecystokinin, and ghrelin, to name a few, are in a constant "cross talk" with the feeding-related brain circuits that encompass hypothalamic populations synthesizing anorexigens (melanocortins, CART, oxytocin) and orexigens (Agouti-related protein, neuropeptide Y, orexins). While this integrated neuroendocrine circuit successfully ensures that enough energy is acquired, it does not seem to be equally efficient in preventing excessive energy intake, especially in the obesogenic environment in which highly caloric and palatable food is constantly available. The current review presents an overview of intricate mechanisms underlying hypothalamic integration of energy balance-related peripheral endocrine input. We discuss vulnerabilities and maladaptive neuroregulatory processes, including changes in hypothalamic neuronal plasticity that propel overeating despite negative consequences.
Collapse
|
176
|
Parrinello D, Sanfratello MA, Parisi MG, Vizzini A, Cammarata M. In the ovary of Ciona intestinalis (Type A), immune-related galectin and phenoloxidase genes are differentially expressed by the follicle accessory cells. FISH & SHELLFISH IMMUNOLOGY 2018; 72:452-458. [PMID: 29146447 DOI: 10.1016/j.fsi.2017.11.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Revised: 11/05/2017] [Accepted: 11/10/2017] [Indexed: 06/07/2023]
Abstract
Riboprobes (in situ hybridization) and antibodies (immunohistochemistry), previously used to show the upregulation of Ciona intestinalis (Type A) galectins (CiLgals-a, CiLgals-b) and phenoloxidase (CinPO2) immune-related genes, were tested on histological sections of the ovary. The ovarian follicles are composed of oocytes encased by follicular cells (FCs) and test cells (TCs). Results show the transcription upregulation of both CiLgals and CinPO2 genes in the vitellogenic FCs, conversely distinct cytolocalization of the proteins are shown. At vitellogenic stage, the CiLgals are localized in the FCs, in the oocyte cytoplasm, and close to the germinal vesicle (GV), whereas the CinPO2 was never identified in the FCs. In a presumptive advanced phase and at the post-vitellogenic stage the TCs appear to be labelled by the CinPO2 riboprobe, and the protein identified by the antibody suggesting an mRNA transcytosis process from FCs. At post-vitellogenic stage the CiLgals mainly enrich the GV nucleoplasm, whereas the CinPO2 is contained in TCs and in the ooplasm but never found in the GV. This finding sheds new light on a former paper in which TCs were reported to be the only CinPO2-producing cells in the ovarian follicle. Finally, CiLgals and CinPO2 genes transcription and proteins production seem to be associated with accessory cells during their differentiation from vitellogenic to post-vitellogenic stage. The present findings promote further research on the early upregulation of immune-related genes, and the potential multifunctional role of the produced proteins. In addition further insight on the accessory cells involvement in ascidian oogenesis are reported.
Collapse
Affiliation(s)
- Daniela Parrinello
- Dipartimento di Scienze della Terra e del Mare, Viale delle Scienze Ed. 16, Palermo, Italy
| | | | - Maria Giovanna Parisi
- Dipartimento di Scienze della Terra e del Mare, Viale delle Scienze Ed. 16, Palermo, Italy
| | - Aiti Vizzini
- Dipartimento di Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche, Via Archirafi 18, Palermo, Italy
| | - Matteo Cammarata
- Dipartimento di Scienze della Terra e del Mare, Viale delle Scienze Ed. 16, Palermo, Italy.
| |
Collapse
|
177
|
Ghosh D, Peng X, Leal J, Mohanty R. Peptides as drug delivery vehicles across biological barriers. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2018; 48:89-111. [PMID: 29963321 PMCID: PMC6023411 DOI: 10.1007/s40005-017-0374-0] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 11/25/2017] [Indexed: 12/15/2022]
Abstract
Peptides are small biological molecules that are attractive in drug delivery and materials engineering for applications including therapeutics, molecular building blocks and cell-targeting ligands. Peptides are small but can possess complexity and functionality as larger proteins. Due to their intrinsic properties, peptides are able to overcome the physiological and transport barriers presented by diseases. In this review, we discuss the progress of identifying and using peptides to shuttle across biological barriers and facilitate transport of drugs and drug delivery systems for improved therapy. Here, the focus of this review is on rationally designed, phage display peptides, and even endogenous peptides as carriers to penetrate biological barriers, specifically the blood-brain barrier(BBB), the gastrointestinal tract (GI), and the solid tumor microenvironment (T). We will discuss recent advances of peptides as drug carriers in these biological environments. From these findings, challenges and potential opportunities to iterate and improve peptide-based approaches will be discussed to translate their promise towards the clinic to deliver drugs for therapeutic efficacy.
Collapse
Affiliation(s)
- Debadyuti Ghosh
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Ave, Austin, TX 78712, USA
| | - Xiujuan Peng
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Ave, Austin, TX 78712, USA
| | - Jasmim Leal
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Ave, Austin, TX 78712, USA
| | - Rashmi Mohanty
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 2409 University Ave, Austin, TX 78712, USA
| |
Collapse
|
178
|
HIV internalization into oral and genital epithelial cells by endocytosis and macropinocytosis leads to viral sequestration in the vesicles. Virology 2017; 515:92-107. [PMID: 29277006 PMCID: PMC5823522 DOI: 10.1016/j.virol.2017.12.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 12/08/2017] [Accepted: 12/13/2017] [Indexed: 01/11/2023]
Abstract
Recently, we showed that HIV-1 is sequestered, i.e., trapped, in the intracellular vesicles of oral and genital epithelial cells. Here, we investigated the mechanisms of HIV-1 sequestration in vesicles of polarized tonsil, foreskin and cervical epithelial cells. HIV-1 internalization into epithelial cells is initiated by multiple entry pathways, including clathrin-, caveolin/lipid raft-associated endocytosis and macropinocytosis. Inhibition of HIV-1 attachment to galactosylceramide and heparan sulfate proteoglycans, and virus endocytosis and macropinocytosis reduced HIV-1 sequestration by 30-40%. T-cell immunoglobulin and mucin domain 1 (TIM-1) were expressed on the apical surface of polarized tonsil, cervical and foreskin epithelial cells. However, TIM-1-associated HIV-1 macropinocytosis and sequestration were detected mostly in tonsil epithelial cells. Sequestered HIV-1 was resistant to trypsin, pronase, and soluble CD4, indicating that the sequestered virus was intracellular. Inhibition of HIV-1 intraepithelial sequestration and elimination of vesicles containing virus in the mucosal epithelium may help in the prevention of HIV-1 mucosal transmission.
Collapse
|
179
|
Nel A, Ruoslahti E, Meng H. New Insights into "Permeability" as in the Enhanced Permeability and Retention Effect of Cancer Nanotherapeutics. ACS NANO 2017; 11:9567-9569. [PMID: 29065443 DOI: 10.1021/acsnano.7b07214] [Citation(s) in RCA: 173] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
| | | | - Huan Meng
- University of California Los Angeles
| |
Collapse
|
180
|
A New Noncanonical Anionic Peptide That Translocates a Cellular Blood-Brain Barrier Model. Molecules 2017; 22:molecules22101753. [PMID: 29057814 PMCID: PMC6151732 DOI: 10.3390/molecules22101753] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 10/14/2017] [Indexed: 12/31/2022] Open
Abstract
The capacity to transport therapeutic molecules across the blood–brain barrier (BBB) represents a breakthrough in the development of tools for the treatment of many central nervous system (CNS)-associated diseases. The BBB, while being protective against infectious agents, hinders the brain uptake of many drugs. Hence, finding safe shuttles able to overcome the BBB is of utmost importance. Herein, we identify a new BBB-translocating peptide with unique properties. For years it was thought that cationic sequences were mandatory for a cell-penetrating peptide (CPP) to achieve cellular internalization. Despite being anionic at physiological pH, PepNeg (sequence (SGTQEEY) is an efficient BBB translocator that is able to carry a large cargo (27 kDa), while maintaining BBB integrity. In addition, PepNeg is able to use two distinct methods of translocation, energy-dependent and -independent, suggesting that direct penetration might occur when low concentrations of peptide are presented to cells. The discovery of this new anionic trans-BBB peptide allows the development of new delivery systems to the CNS and contributes to the need to rethink the role of electrostatic attraction in BBB-translocation.
Collapse
|
181
|
Li Q, Xia D, Tao J, Shen A, He Y, Gan Y, Wang C. Self-Assembled Core-Shell-Type Lipid-Polymer Hybrid Nanoparticles: Intracellular Trafficking and Relevance for Oral Absorption. J Pharm Sci 2017; 106:3120-3130. [DOI: 10.1016/j.xphs.2017.05.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/30/2017] [Accepted: 05/16/2017] [Indexed: 01/30/2023]
|
182
|
León-Juárez M, Martínez–Castillo M, González-García LD, Helguera-Repetto AC, Zaga-Clavellina V, García-Cordero J, Flores-Pliego A, Herrera-Salazar A, Vázquez-Martínez ER, Reyes-Muñoz E. Cellular and molecular mechanisms of viral infection in the human placenta. Pathog Dis 2017; 75:4056146. [PMID: 28903546 PMCID: PMC7108519 DOI: 10.1093/femspd/ftx093] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 07/27/2017] [Indexed: 12/22/2022] Open
Abstract
The placenta is a highly specialized organ that is formed during human gestation for conferring protection and generating an optimal microenvironment to maintain the equilibrium between immunological and biochemical factors for fetal development. Diverse pathogens, including viruses, can infect several cellular components of the placenta, such as trophoblasts, syncytiotrophoblasts and other hematopoietic cells. Viral infections during pregnancy have been associated with fetal malformation and pregnancy complications such as preterm labor. In this minireview, we describe the most recent findings regarding virus-host interactions at the placental interface and investigate the mechanisms through which viruses may access trophoblasts and the pathogenic processes involved in viral dissemination at the maternal-fetal interface.
Collapse
Affiliation(s)
- Moises León-Juárez
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales 800, Col. Lomas Virreyes, CP 11000, Ciudad de México, México
| | - Macario Martínez–Castillo
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales 800, Col. Lomas Virreyes, CP 11000, Ciudad de México, México
| | - Luis Didier González-García
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales 800, Col. Lomas Virreyes, CP 11000, Ciudad de México, México
| | - Addy Cecilia Helguera-Repetto
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales 800, Col. Lomas Virreyes, CP 11000, Ciudad de México, México
| | - Verónica Zaga-Clavellina
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales 800, Col. Lomas Virreyes, CP 11000, Ciudad de México, México
| | - Julio García-Cordero
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del I.P.N. Av. I.P.N 2508 Col. San Pedro Zacatenco, CP 07360 Ciudad de México, México
| | - Arturo Flores-Pliego
- Departamento de Inmunobioquímica, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales 800, Col. Lomas Virreyes, CP 11000, Ciudad de México, México
| | - Alma Herrera-Salazar
- Departamento de Infectología e Inmunología Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales #800, Col. Lomas Virreyes, CP 11000. Ciudad de México, México
| | - Edgar Ricardo Vázquez-Martínez
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología-Facultad de Química UNAM, Ciudad de México, México
| | - Enrique Reyes-Muñoz
- Coordinación de Endocrinología, Instituto Nacional de Perinatología “Isidro Espinosa de los Reyes”, Montes Urales #800, Col. Lomas Virreyes, CP 11000. Ciudad de México. México
| |
Collapse
|
183
|
Chow BW, Gu C. Gradual Suppression of Transcytosis Governs Functional Blood-Retinal Barrier Formation. Neuron 2017; 93:1325-1333.e3. [PMID: 28334606 DOI: 10.1016/j.neuron.2017.02.043] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 11/14/2016] [Accepted: 02/22/2017] [Indexed: 12/26/2022]
Abstract
Blood-central nervous system (CNS) barriers partition neural tissues from the blood, providing a homeostatic environment for proper neural function. The endothelial cells that form blood-CNS barriers have specialized tight junctions and low rates of transcytosis to limit the flux of substances between blood and CNS. However, the relative contributions of these properties to CNS barrier permeability are unknown. Here, by studying functional blood-retinal barrier (BRB) formation in mice, we found that immature vessel leakage occurs entirely through transcytosis, as specialized tight junctions are functional as early as vessel entry into the CNS. A functional barrier forms only when transcytosis is gradually suppressed during development. Mutant mice with elevated or reduced levels of transcytosis have delayed or precocious sealing of the BRB, respectively. Therefore, the temporal regulation of transcytosis governs the development of a functional BRB, and suppression of transcytosis is a principal contributor for functional barrier formation.
Collapse
Affiliation(s)
- Brian Wai Chow
- Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Chenghua Gu
- Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA.
| |
Collapse
|
184
|
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
| |
Collapse
|
185
|
Yamazaki Y, Kanekiyo T. Blood-Brain Barrier Dysfunction and the Pathogenesis of Alzheimer's Disease. Int J Mol Sci 2017; 18:ijms18091965. [PMID: 28902142 PMCID: PMC5618614 DOI: 10.3390/ijms18091965] [Citation(s) in RCA: 258] [Impact Index Per Article: 36.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 09/06/2017] [Accepted: 09/07/2017] [Indexed: 01/22/2023] Open
Abstract
Brain capillary endothelial cells form the blood-brain barrier (BBB), which is covered with basement membranes and is also surrounded by pericytes and astrocyte end-feet in the neurovascular unit. The BBB tightly regulates the molecular exchange between the blood flow and brain parenchyma, thereby regulating the homeostasis of the central nervous system (CNS). Thus, dysfunction of the BBB is likely involved in the pathogenesis of several neurological diseases, including Alzheimer’s disease (AD). While amyloid-β (Aβ) deposition and neurofibrillary tangle formation in the brain are central pathological hallmarks in AD, cerebrovascular lesions and BBB alteration have also been shown to frequently coexist. Although further clinical studies should clarify whether BBB disruption is a specific feature of AD pathogenesis, increasing evidence indicates that each component of the neurovascular unit is significantly affected in the presence of AD-related pathologies in animal models and human patients. Conversely, since some portions of Aβ are eliminated along the neurovascular unit and across the BBB, disturbing the pathways may result in exacerbated Aβ accumulation in the brain. Thus, current evidence suggests that BBB dysfunction may causatively and consequently contribute to AD pathogenesis, forming a vicious cycle between brain Aβ accumulation and neurovascular unit impairments during disease progression.
Collapse
Affiliation(s)
- Yu Yamazaki
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA.
| | - Takahisa Kanekiyo
- Department of Neuroscience, Mayo Clinic, 4500 San Pablo Road, Jacksonville, FL 32224, USA.
| |
Collapse
|
186
|
Garcia-Castillo MD, Chinnapen DJF, Lencer WI. Membrane Transport across Polarized Epithelia. Cold Spring Harb Perspect Biol 2017; 9:cshperspect.a027912. [PMID: 28213463 DOI: 10.1101/cshperspect.a027912] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Polarized epithelial cells line diverse surfaces throughout the body forming selective barriers between the external environment and the internal milieu. To cross these epithelial barriers, large solutes and other cargoes must undergo transcytosis, an endocytic pathway unique to polarized cell types, and significant for the development of cell polarity, uptake of viral and bacterial pathogens, transepithelial signaling, and immunoglobulin transport. Here, we review recent advances in our knowledge of the transcytotic pathway for proteins and lipids. We also discuss briefly the promise of harnessing the molecules that undergo transcytosis as vehicles for clinical applications in drug delivery.
Collapse
Affiliation(s)
| | - Daniel J-F Chinnapen
- Division of Gastroenterology, Boston Children's Hospital, Boston, Massachusetts 02155.,Department of Pediatrics, Harvard Medical School, Boston, Massachusetts 02155.,Department of Pediatrics, Harvard Digestive Diseases Center, Boston, Massachusetts 02155
| | - Wayne I Lencer
- Division of Gastroenterology, Boston Children's Hospital, Boston, Massachusetts 02155.,Department of Pediatrics, Harvard Medical School, Boston, Massachusetts 02155.,Department of Pediatrics, Harvard Digestive Diseases Center, Boston, Massachusetts 02155
| |
Collapse
|
187
|
Yamamoto H, Umeda D, Matsumoto S, Kikuchi A. LDL switches the LRP6 internalization route from flotillin dependent to clathrin dependent in hepatic cells. J Cell Sci 2017; 130:3542-3556. [PMID: 28821575 DOI: 10.1242/jcs.202135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 08/14/2017] [Indexed: 12/26/2022] Open
Abstract
Low-density lipoprotein (LDL) receptor-related protein 6 (LRP6) was originally identified as a co-receptor of the Wnt signalling pathway and has been shown to be involved in LDL transport. In polarized hepatocytes, many apical proteins are sorted to the basolateral membrane and then internalized and transported to the apical bile canalicular membrane - a process known as transcytosis. We show that LRP6 is transcytosed to the apical membrane of polarized hepatic HepG2 cells via a flotillin-dependent manner in the absence of LDL. LRP6 formed a complex with Niemann-Pick type C1-like 1 (NPC1L1), which is localized to the bile canalicular membrane of the liver and is involved in cholesterol absorption from the bile. LRP6 was required for apical membrane localization of NPC1L1 in the absence of LDL. Clathrin-dependent LRP6 internalization occurred in the presence of LDL, which resulted in trafficking of LRP6 to the lysosome, thereby reducing apical sorting of LRP6 and NPC1L1. These results suggest that LRP6 endocytosis proceeds by two routes, depending on the presence of LDL, and that LRP6 controls the intracellular destination of NPC1L1 in hepatocytes.
Collapse
Affiliation(s)
- Hideki Yamamoto
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Daisuke Umeda
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Shinji Matsumoto
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akira Kikuchi
- Department of Molecular Biology and Biochemistry, Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| |
Collapse
|
188
|
Aeschimann W, Staats S, Kammer S, Olieric N, Jeckelmann JM, Fotiadis D, Netscher T, Rimbach G, Cascella M, Stocker A. Self-assembled α-Tocopherol Transfer Protein Nanoparticles Promote Vitamin E Delivery Across an Endothelial Barrier. Sci Rep 2017; 7:4970. [PMID: 28694484 PMCID: PMC5504013 DOI: 10.1038/s41598-017-05148-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 05/24/2017] [Indexed: 01/16/2023] Open
Abstract
Vitamin E is one of the most important natural antioxidants, protecting polyunsaturated fatty acids in the membranes of cells. Among different chemical isoforms assimilated from dietary regimes, RRR-α-tocopherol is the only one retained in higher animals. This is possible thanks to α-Tocopherol Transfer Protein (α-TTP), which extracts α-tocopherol from endosomal compartments in liver cells, facilitating its distribution into the body. Here we show that, upon binding to its substrate, α-TTP acquires tendency to aggregation into thermodynamically stable high molecular weight oligomers. Determination of the structure of such aggregates by X-ray crystallography revealed a spheroidal particle formed by 24 protein monomers. Oligomerization is triggered by refolding of the N-terminus. Experiments with cultured cell monolayers demonstrate that the same oligomers are efficiently transported through an endothelial barrier (HUVEC) and not through an epithelial one (Caco-2). Discovery of a human endogenous transport protein with intrinsic capability of crossing endothelial tissues opens to new ways of drug delivery into the brain or other tissues protected by endothelial barriers.
Collapse
Affiliation(s)
- Walter Aeschimann
- University of Bern, Department of Chemistry and Biochemistry, Bern, Switzerland
| | - Stefanie Staats
- University of Kiel, Institute of Human Nutrition and Food Science, Kiel, Germany
| | - Stephan Kammer
- University of Bern, Department of Chemistry and Biochemistry, Bern, Switzerland
| | | | - Jean-Marc Jeckelmann
- University of Bern, Institute of Biochemistry and Molecular Medicine, Bern, Switzerland
| | - Dimitrios Fotiadis
- University of Bern, Institute of Biochemistry and Molecular Medicine, Bern, Switzerland
| | | | - Gerald Rimbach
- University of Kiel, Institute of Human Nutrition and Food Science, Kiel, Germany
| | - Michele Cascella
- University of Oslo, Department of Chemistry and Centre for Theoretical and Computational Chemistry (CTCC), Oslo, Norway.
| | - Achim Stocker
- University of Bern, Department of Chemistry and Biochemistry, Bern, Switzerland.
| |
Collapse
|
189
|
Ono S, Egawa G, Kabashima K. Regulation of blood vascular permeability in the skin. Inflamm Regen 2017; 37:11. [PMID: 29259710 PMCID: PMC5725833 DOI: 10.1186/s41232-017-0042-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/25/2017] [Indexed: 12/31/2022] Open
Abstract
Regulation of blood vessel permeability is essential for the homeostasis of peripheral tissues. This regulation controls the trafficking of plasma contents, including water, vitamins, ions, hormones, cytokines, amyloids, lipoproteins, carrier proteins, and immunoglobulins. The properties of blood vessels vary among tissues based on their structural differences: continuous, fenestrated, or sinusoidal. These three types of blood vessels have different charge and size barrier properties. The anionic luminal glycocalyx layer on endothelial cells establishes the "charge barrier" that repels the attachment of negatively charged blood cells and plasma molecules. In contrast, the "size barrier" of blood vessels largely relies on the interendothelial junctions (IEJs) between endothelial cells, which define the paracellular permeability. As in most peripheral tissues, blood capillaries in the skin are composed of continuous and/or fenestrated blood vessels that have relatively tighter IEJs compared to those in the internal organs. Small vesicles in the capillary endothelium were discovered in the 1950s, and studies have since confirmed that blood endothelial cells transport the plasma contents by endocytosis and subsequent transcytosis and exocytosis-this process is called transcellular permeability. The permeability of blood vessels is highly variable as a result of intrinsic and extrinsic factors. It is significantly elevated upon tissue inflammations as a result of disabled IEJs and increased paracellular permeability due to inflammatory mediators. An increase in transcellular permeability during inflammation has also been postulated. Here, we provide an overview of the general properties of vascular permeability based on our recent observations of murine skin inflammation models, and we discuss its physiological significance in peripheral homeostasis.
Collapse
Affiliation(s)
- Sachiko Ono
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara, Sakyo, Kyoto, 606-8507 Japan
| | - Gyohei Egawa
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara, Sakyo, Kyoto, 606-8507 Japan
| | - Kenji Kabashima
- Department of Dermatology, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawahara, Sakyo, Kyoto, 606-8507 Japan
- Singapore Immunology Network (SIgN) and Institute of Medical Biology, Agency for Science, Technology and Research (A*STAR), Biopolis, Singapore
- PRESTO, Japan Science and Technology Agency, Saitama, Japan
| |
Collapse
|
190
|
Na Pombejra S, Salemi M, Phinney BS, Gelli A. The Metalloprotease, Mpr1, Engages AnnexinA2 to Promote the Transcytosis of Fungal Cells across the Blood-Brain Barrier. Front Cell Infect Microbiol 2017; 7:296. [PMID: 28713781 PMCID: PMC5492700 DOI: 10.3389/fcimb.2017.00296] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 06/16/2017] [Indexed: 12/19/2022] Open
Abstract
Eukaryotic pathogens display multiple mechanisms for breaching the blood-brain barrier (BBB) and invading the central nervous system (CNS). Of the fungal spp., that cause disease in mammals, only some cross brain microvascular endothelial cells which constitute the BBB, and invade the brain. Cryptococcus neoformans, the leading cause of fungal meningoencephalitis, crosses the BBB directly by transcytosis or by co-opting monocytes. We previously determined that Mpr1, a secreted fungal metalloprotease, facilitates association of fungal cells to brain microvascular endothelial cells and we confirmed that the sole expression of CnMPR1 endowed S. cerevisiae with an ability to cross the BBB. Here, the gain of function conferred onto S. cerevisiae by CnMPR1 (i.e., Sc<CnMPR1> strain) was used to identify targets of Mpr1 that might reside on the surface of the BBB. Following biotin-labeling of BBB surface proteins, Sc<CnMPR1>-associated proteins were identified by LC-MS/MS. Of the 62 proteins identified several were cytoskeleton-endocytosis-associated including AnnexinA2 (AnxA2). Using an in vitro model of the human BBB where AnxA2 activity was blocked, we found that the lack of AnxA2 activity prevented the movement of S. cerevisiae across the BBB (i.e., transcytosis of Sc<CnMPR1> strain) but unexpectedly, TEM analysis revealed that AnxA2 was not required for the association or the internalization of Sc<CnMPR1>. Additionally, the co-localization of AnxA2 and Sc<CnMPR1> suggest that successful crossing of the BBB is dependent on an AxnA2-Mpr1-mediated interaction. Collectively the data suggest that AnxA2 plays a central role in fungal transcytosis in human brain microvascular endothelial cells. The movement and exocytosis of Sc<CnMPR1> is dependent on membrane trafficking events that involve AnxA2 but these events appear to be independent from the actions of AnxA2 at the host cell surface. We propose that Mpr1 activity promotes cytoskeleton remodeling in brain microvascular endothelial cells and thereby engages AnxA2 in order to facilitate fungal transcytosis of the BBB.
Collapse
Affiliation(s)
- Sarisa Na Pombejra
- Department of Pharmacology, School of Medicine, Genome and Biomedical Sciences Facility, University of California, DavisDavis, CA, United States
| | - Michelle Salemi
- Proteomics Core Facility, Genome and Biomedical Sciences Facility, University of California, DavisDavis, CA, United States
| | - Brett S Phinney
- Proteomics Core Facility, Genome and Biomedical Sciences Facility, University of California, DavisDavis, CA, United States
| | - Angie Gelli
- Department of Pharmacology, School of Medicine, Genome and Biomedical Sciences Facility, University of California, DavisDavis, CA, United States
| |
Collapse
|
191
|
Theodorakis PE, Müller EA, Craster RV, Matar OK. Physical insights into the blood-brain barrier translocation mechanisms. Phys Biol 2017; 14:041001. [PMID: 28586313 DOI: 10.1088/1478-3975/aa708a] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The number of individuals suffering from diseases of the central nervous system (CNS) is growing with an aging population. While candidate drugs for many of these diseases are available, most of these pharmaceutical agents cannot reach the brain rendering most of the drug therapies that target the CNS inefficient. The reason is the blood-brain barrier (BBB), a complex and dynamic interface that controls the influx and efflux of substances through a number of different translocation mechanisms. Here, we present these mechanisms providing, also, the necessary background related to the morphology and various characteristics of the BBB. Moreover, we discuss various numerical and simulation approaches used to study the BBB, and possible future directions based on multi-scale methods. We anticipate that this review will motivate multi-disciplinary research on the BBB aiming at the design of effective drug therapies.
Collapse
|
192
|
Underwood W, Ryan A, Somerville SC. An Arabidopsis Lipid Flippase Is Required for Timely Recruitment of Defenses to the Host-Pathogen Interface at the Plant Cell Surface. MOLECULAR PLANT 2017; 10:805-820. [PMID: 28434950 DOI: 10.1016/j.molp.2017.04.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 03/29/2017] [Accepted: 04/04/2017] [Indexed: 05/22/2023]
Abstract
Deposition of cell wall-reinforcing papillae is an integral component of the plant immune response. The Arabidopsis PENETRATION 3 (PEN3) ATP binding cassette (ABC) transporter plays a role in defense against numerous pathogens and is recruited to sites of pathogen detection where it accumulates within papillae. However, the trafficking pathways and regulatory mechanisms contributing to recruitment of PEN3 and other defenses to the host-pathogen interface are poorly understood. Here, we report a confocal microscopy-based screen to identify mutants with altered localization of PEN3-GFP after inoculation with powdery mildew fungi. We identified a mutant, aberrant localization of PEN3 3 (alp3), displaying accumulation of the normally plasma membrane (PM)-localized PEN3-GFP in endomembrane compartments. The mutant was found to be disrupted in the P4-ATPase AMINOPHOSPHOLIPID ATPASE 3 (ALA3), a lipid flippase that plays a critical role in vesicle formation. We provide evidence that PEN3 undergoes continuous endocytic cycling from the PM to the trans-Golgi network (TGN). In alp3, PEN3 accumulates in the TGN, causing delays in recruitment to the host-pathogen interface. Our results indicate that PEN3 and other defense proteins continuously cycle through the TGN and that timely exit of these proteins from the TGN is critical for effective pre-invasive immune responses against powdery mildews.
Collapse
Affiliation(s)
- William Underwood
- Energy Biosciences Institute, University of California, Berkeley, CA 94720, USA.
| | - Andrew Ryan
- Energy Biosciences Institute, University of California, Berkeley, CA 94720, USA
| | - Shauna C Somerville
- Energy Biosciences Institute, University of California, Berkeley, CA 94720, USA; Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
| |
Collapse
|
193
|
Shi Y, Shi Z, Li S, Zhang Y, He B, Peng D, Tian J, Zhao M, Wang X, Zhang Q. The interactions of single-wall carbon nanohorns with polar epithelium. Int J Nanomedicine 2017; 12:4177-4194. [PMID: 28615944 PMCID: PMC5459976 DOI: 10.2147/ijn.s133295] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Single-wall carbon nanohorns (SWCNHs), which have multitudes of horn interstices, an extensive surface area, and a spherical aggregate structure, offer many advantages over other carbon nanomaterials being used as a drug nanovector. The previous studies on the interaction between SWCNHs and cells have mostly emphasized on cellular uptake and intracellular trafficking, but seldom on epithelial cells. Polar epithelium as a typical biological barrier constitutes the prime obstacle for the transport of therapeutic agents to target site. This work tried to explore the permeability of SWCNHs through polar epithelium and their abilities to modulate transcellular transport, and evaluate the potential of SWCNHs in drug delivery. Madin-Darby canine kidney (MDCK) cell monolayer was used as a polar epithelial cell model, and as-grown SWCNHs, together with oxidized and fluorescein isothiocyanate-conjugated bovine serum albumin-labeled forms, were constructed and comprehensively investigated in vitro and in vivo. Various methods such as transmission electron microscopy and confocal imaging were used to visualize their intracellular uptake and localization, as well as to investigate the potential transcytotic process. The related mechanism was explored by specific inhibitors. Additionally, fast multispectral optoacoustic tomography imaging was used for monitoring the distribution and transport process of SWCNHs in vivo after oral administration in nude mice, as an evidence for their interaction with the intestinal epithelium. The results showed that SWCNHs had a strong bioadhesion property, and parts of them could be uptaken and transcytosed across the MDCK monolayer. Multiple mechanisms were involved in the uptake and transcytosis of SWCNHs with varying degrees. After oral administration, oxidized SWCNHs were distributed in the gastrointestinal tract and retained in the intestine for up to 36 h probably due to their surface adhesion and endocytosis into the intestinal epithelium. Overall, this comprehensive investigation demonstrated that SWCNHs can serve as a promising nanovector that can cross the barrier of polar epithelial cells and deliver drugs effectively.
Collapse
Affiliation(s)
- Yujie Shi
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences
| | - Zujin Shi
- Beijing National Laboratory for Molecular Sciences, State Key Lab of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing, People's Republic of China
| | - Suxin Li
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences
| | - Yuan Zhang
- Department of Biomedical and Pharmaceutical Sciences, College of Pharmacy, University of Rhode Island, Kingston, RI, USA
| | - Bing He
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences
| | - Dong Peng
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences
| | - Jie Tian
- Key Laboratory of Molecular Imaging of Chinese Academy of Sciences, Institute of Automation, Chinese Academy of Sciences
| | - Ming Zhao
- Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing, People's Republic of China
| | - Xueqing Wang
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences
| | - Qiang Zhang
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences
| |
Collapse
|
194
|
Kurokawa Y, Sone H, Win-Shwe TT, Zeng Y, Kimura H, Koyama Y, Yagi Y, Matsui Y, Yamazaki M, Hirano S. Aggregation is a critical cause of poor transfer into the brain tissue of intravenously administered cationic PAMAM dendrimer nanoparticles. Int J Nanomedicine 2017; 12:3967-3975. [PMID: 28579780 PMCID: PMC5449168 DOI: 10.2147/ijn.s125808] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Dendrimers have been expected as excellent nanodevices for brain medication. An amine-terminated polyamidoamine dendrimer (PD), an unmodified plain type of PD, has the obvious disadvantage of cytotoxicity, but still serves as an attractive molecule because it easily adheres to the cell surface, facilitating easy cellular uptake. Single-photon emission computed tomographic imaging of a mouse following intravenous injection of a radiolabeled PD failed to reveal any signal in the intracranial region. Furthermore, examination of the permeability of PD particles across the blood–brain barrier (BBB) in vitro using a commercially available kit revealed poor permeability of the nanoparticles, which was suppressed by an inhibitor of caveolae-mediated endocytosis, but not by an inhibitor of macropinocytosis. Physicochemical analysis of the PD revealed that cationic PDs are likely to aggregate promptly upon mixing with body fluids and that this prompt aggregation is probably driven by non-Derjaguin–Landau– Verwey–Overbeek attractive forces originating from the surrounding divalent ions. Atomic force microscopy observation of a freshly cleaved mica plate soaked in dendrimer suspension (culture media) confirmed prompt aggregation. Our study revealed poor transfer of intravenously administered cationic PDs into the intracranial nervous tissue, and the results of our analysis suggested that this was largely attributable to the reduced BBB permeability arising from the propensity of the particles to promptly aggregate upon mixing with body fluids.
Collapse
Affiliation(s)
- Yoshika Kurokawa
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki
| | - Hideko Sone
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki
| | - Tin-Tin Win-Shwe
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki
| | - Yang Zeng
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki
| | - Hiroyuki Kimura
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University
| | - Yosuke Koyama
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki
| | - Yusuke Yagi
- Department of Analytical and Bioinorganic Chemistry, Kyoto Pharmaceutical University
| | - Yasuto Matsui
- Department of Environmental Engineering, Kyoto University Graduate School of Engineering, Kyoto
| | - Masashi Yamazaki
- TIA Center Office, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan
| | - Seishiro Hirano
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki
| |
Collapse
|
195
|
Kalucka J, Teuwen LA, Geldhof V, Carmeliet P. How to Cross the Lymphatic Fence: Lessons From Solute Transport. Circ Res 2017; 120:1376-1378. [PMID: 28450356 DOI: 10.1161/circresaha.117.310916] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Joanna Kalucka
- From the Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, Leuven Cancer Institute (LKI), KU Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Vesalius Research Center, Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); GZA Hospitals Sint-Augustinus, Wilrijk, Belgium (L.-A.T.); and Center for Oncological Research, University of Antwerp, Belgium (L.-A.T.)
| | - Laure-Anne Teuwen
- From the Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, Leuven Cancer Institute (LKI), KU Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Vesalius Research Center, Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); GZA Hospitals Sint-Augustinus, Wilrijk, Belgium (L.-A.T.); and Center for Oncological Research, University of Antwerp, Belgium (L.-A.T.)
| | - Vincent Geldhof
- From the Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, Leuven Cancer Institute (LKI), KU Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Vesalius Research Center, Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); GZA Hospitals Sint-Augustinus, Wilrijk, Belgium (L.-A.T.); and Center for Oncological Research, University of Antwerp, Belgium (L.-A.T.)
| | - Peter Carmeliet
- From the Laboratory of Angiogenesis and Vascular Metabolism, Department of Oncology, Leuven Cancer Institute (LKI), KU Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); Laboratory of Angiogenesis and Vascular Metabolism, Center for Cancer Biology, Vesalius Research Center, Leuven, Belgium (J.K., L.-A.T., V.G., P.C.); GZA Hospitals Sint-Augustinus, Wilrijk, Belgium (L.-A.T.); and Center for Oncological Research, University of Antwerp, Belgium (L.-A.T.).
| |
Collapse
|
196
|
Stewart T, Koval WT, Molina SA, Bock SM, Lillard JW, Ross RF, Desai TA, Koval M. Calibrated flux measurements reveal a nanostructure-stimulated transcytotic pathway. Exp Cell Res 2017; 355:153-161. [PMID: 28390677 DOI: 10.1016/j.yexcr.2017.03.065] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 03/06/2017] [Accepted: 03/07/2017] [Indexed: 01/08/2023]
Abstract
Transport of therapeutic agents across epithelial barriers is an important element in drug delivery. Transepithelial flux is widely used as a measure of transit across an epithelium, however it is most typically employed as a relative as opposed to absolute measure of molecular movement. Here, we have used the calcium switch approach to measure the maximum rate of paracellular flux through unencumbered intercellular junctions as a method to calibrate the flux rates for a series of tracers ranging in 0.6-900kDa in size across barriers composed of human colon epithelial (Caco-2) cells. We then examined the effects of nanostructured films (NSFs) on transepithelial transport. Two different NSF patterns were used, Defined Nanostructure (DN) 2 imprinted on polypropylene (PP) and DN3 imprinted on polyether ether ketone (PEEK). NSFs made direct contact with cells and decreased their barrier function, as measured by transepithelial resistance (TER), however cell viability was not affected. When NSF-induced transepithelial transport of Fab fragment (55kDa) and IgG (160kDa) was measured, it was unexpectedly found to be significantly greater than the maximum paracellular rate as predicted using cells cultured in low calcium. These data suggested that NSFs stimulate an active transport pathway, most likely transcytosis, in addition to increasing paracellular flux. Transport of IgG via transcytosis was confirmed by immunofluorescence confocal microscopy, since NSFs induced a significant level of IgG endocytosis by Caco-2 cells. Thus, NSF-induced IgG flux was attributable to both transcytosis and the paracellular route. These data provide the first demonstration that transcytosis can be stimulated by NSFs and that this was concurrent with increased paracellular permeability. Moreover, NSFs with distinct architecture paired with specific substrates have the potential to provide an effective means to regulate transepithelial transport in order to optimize drug delivery.
Collapse
Affiliation(s)
- Tarianna Stewart
- Morehouse School of Medicine, Atlanta, GA, United States; Division of Pulmonary Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, United States
| | - William T Koval
- Division of Pulmonary Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, United States
| | - Samuel A Molina
- Division of Pulmonary Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, United States
| | | | | | | | - Tejal A Desai
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, CA, United States
| | - Michael Koval
- Division of Pulmonary Allergy, Critical Care and Sleep Medicine, Department of Medicine, Emory University School of Medicine, United States; Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, United States.
| |
Collapse
|
197
|
Gordon SM, Remaley AT. High density lipoproteins are modulators of protease activity: Implications in inflammation, complement activation, and atherothrombosis. Atherosclerosis 2017; 259:104-113. [PMID: 28242049 PMCID: PMC5391047 DOI: 10.1016/j.atherosclerosis.2016.11.015] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 11/11/2016] [Accepted: 11/15/2016] [Indexed: 12/31/2022]
Abstract
High density lipoproteins (HDL) represent a compositionally diverse population of particles in the circulation, containing a wide variety of lipids and proteins. Gene ontology functional analysis of the 96 commonly identified HDL binding proteins reveals that almost half of these proteins are either proteases or have known roles in protease regulation. Here, we discuss the activities of some of these proteins in regard to their roles in regulating proteases involved in inflammation, coagulation, and complement activation, particularly in the context of atherosclerosis. The overall goal of this review is to discuss potential functional roles of HDL in protease regulatory pathways based on current literature and known functions of HDL binding proteins and to promote the consideration of HDL as a global modulator of proteolytic equilibrium.
Collapse
Affiliation(s)
- Scott M Gordon
- Lipoprotein Metabolism Section, National Heart, Lung, and Blood Institute, Bethesda, MD, USA.
| | - Alan T Remaley
- Lipoprotein Metabolism Section, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| |
Collapse
|
198
|
Pernet-Gallay K, Jouneau PH, Bertrand A, Delaroche J, Farion R, Rémy C, Barbier EL. Vascular permeability in the RG2 glioma model can be mediated by macropinocytosis and be independent of the opening of the tight junction. J Cereb Blood Flow Metab 2017; 37:1264-1275. [PMID: 27306752 PMCID: PMC5453449 DOI: 10.1177/0271678x16654157] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study evaluates the extravasation pathways of circulating macromolecules in a rat glioma model (RG2) which was observed by both magnetic resonance imaging using ultrasmall superparamagnetic iron oxide and electron microscopy. Although magnetic resonance imaging signal enhancement was observed as soon as 10 min after injection (9.4% 2 h after injection), electron microscopy showed that endothelial cells were still tightly sealed. However, circulating immunoglobulin G and ultrasmall superparamagnetic iron oxide were found in large membrane compartments of endothelial cells, in the basal lamina (7.4 ± 1.2 gold particles/µm2 in the tumor versus 0.38 ± 0.17 in healthy tissue, p = 1.4.10-5) and between tumoral cells. Altogether, this strongly suggests an active transport mediated by macropinocytosis. To challenge this transport mechanism, additional rats were treated with amiloride, an inhibitor of macropinocytosis, leading to a reduction of membrane protrusions (66%) and of macropinosomes. Amiloride however also opened tumoral tight junctions allowing a larger extravasation of ultrasmall superparamagnetic iron oxide (magnetic resonance imaging signal enhancement of 35.7% 2 h after injection). Altogether, these results suggest that ultrasmall superparamagnetic iron oxide and immunoglobulin G in the RG2 glioma model follow an active extravasation pathway mediated by a macropinocytosis process. Amiloride also appears as a potential strategy to facilitate the extravasation of chemotherapeutic drugs in glioma.
Collapse
Affiliation(s)
- Karin Pernet-Gallay
- INSERM, U 1216, Grenoble, France
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France
| | - Pierre-Henri Jouneau
- CEA, Institut Nanosciences et Cryogénie, Grenoble, France
- Univ. Grenoble Alpes, Institut Nanosciences et Cryogénie, Grenoble, France
| | - Anne Bertrand
- INSERM, U 1216, Grenoble, France
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France
| | - Julie Delaroche
- INSERM, U 1216, Grenoble, France
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France
| | - Régine Farion
- INSERM, U 1216, Grenoble, France
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France
| | - Chantal Rémy
- INSERM, U 1216, Grenoble, France
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France
| | - Emmanuel L Barbier
- INSERM, U 1216, Grenoble, France
- Univ. Grenoble Alpes, Grenoble Institut des Neurosciences, GIN, Grenoble, France
- Emmanuel L Barbier, U1216 – Grenoble Institut des Neurosciences, Chemin Fortuné Ferrini, BP 217—CHU Grenoble, F-38043 Grenoble cedex, France.
| |
Collapse
|
199
|
Ho YT, Adriani G, Beyer S, Nhan PT, Kamm RD, Kah JCY. A Facile Method to Probe the Vascular Permeability of Nanoparticles in Nanomedicine Applications. Sci Rep 2017; 7:707. [PMID: 28386096 PMCID: PMC5429672 DOI: 10.1038/s41598-017-00750-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/09/2017] [Indexed: 12/22/2022] Open
Abstract
The effectiveness of nanoparticles (NP) in nanomedicine depends on their ability to extravasate from vasculature towards the target tissue. This is determined by their permeability across the endothelial barrier. Unfortunately, a quantitative study of the diffusion permeability coefficients (Pd) of NPs is difficult with in vivo models. Here, we utilize a relevant model of vascular-tissue interface with tunable endothelial permeability in vitro based on microfluidics. Human umbilical vein endothelial cells (HUVECs) grown in microfluidic devices were treated with Angiopoietin 1 and cyclic adenosine monophosphate (cAMP) to vary the Pd of the HUVECs monolayer towards fluorescent polystyrene NPs (pNPs) of different sizes, which was determined from image analysis of their fluorescence intensity when diffusing across the monolayer. Using 70 kDa dextran as a probe, untreated HUVECs yielded a Pd that approximated tumor vasculature while HUVECs treated with 25 μg/mL cAMP had Pd that approximated healthy vasculature in vivo. As the size of pNPs increased, its Pd decreased in tumor vasculature, but remained largely unchanged in healthy vasculature, demonstrating a trend similar to tumor selectivity for smaller NPs. This microfluidic model of vascular-tissue interface can be used in any laboratory to perform quantitative assessment of the tumor selectivity of nanomedicine-based systems.
Collapse
Affiliation(s)
- Yan Teck Ho
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore
| | - Giulia Adriani
- BioSyM Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore, Singapore
| | - Sebastian Beyer
- BioSyM Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore, Singapore.,Federal Institute for Materials Research and Testing, Germany, Germany
| | - Phan-Thien Nhan
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore.,Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore
| | - Roger D Kamm
- BioSyM Interdisciplinary Research Group, Singapore-MIT Alliance for Research and Technology, Singapore, Singapore. .,Department of Biological Engineering and Department of Mechanical Engineering, Massachusetts Institute of Technology, Massachusetts, USA.
| | - James Chen Yong Kah
- NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore. .,Department of Biomedical Engineering, National University of Singapore, Singapore, Singapore.
| |
Collapse
|
200
|
Petrenko V, Gillespie J. Paradigm shift in bacteriophage-mediated delivery of anticancer drugs: from targeted 'magic bullets' to self-navigated 'magic missiles'. Expert Opin Drug Deliv 2017; 14:373-384. [PMID: 27466706 PMCID: PMC5544533 DOI: 10.1080/17425247.2016.1218463] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION New phage-directed nanomedicines have emerged recently as a result of the in-depth study of the genetics and structure of filamentous phage and evolution of phage display and phage nanobiotechnology. This review focuses on the progress made in the development of the cancer-targeted nanomaterials and discusses the trends in using phage as a bioselectable molecular navigation system. Areas covered: The merging of phage display technologies with nanotechnology in recent years has proved promising in different areas of medicine and technology, such as medical diagnostics, molecular imaging, vaccine development and targeted drug/gene delivery, which is the focus of this review. The authors used data obtained from their research group and sourced using Science Citation Index (Web of Science) and NCBI PubMed search resources. Expert opinion: First attempts of adapting traditional concepts of direct targeting of tumor using phage-targeted nanomedicines has shown minimal improvements. With discovery and study of biological and technical barriers that prevent anti-tumor drug delivery, a paradigm shift from traditional drug targeting to nanomedicine navigation systems is required. The advanced bacteriophage-driven self-navigation systems are thought to overcome those barriers using more precise, localized phage selection methods, multi-targeting 'promiscuous' ligands and advanced multifunctional nanomedicine platforms.
Collapse
Affiliation(s)
- V.A. Petrenko
- Department of Pathobiology, Auburn University, AL 36849, USA
| | - J.W. Gillespie
- Department of Pathobiology, Auburn University, AL 36849, USA
| |
Collapse
|