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Anada C, Ikeda K, Nakao H, Nakano M. Improvement of Thermal Stability of Amphipathic Peptide-Phospholipid Nanodiscs via Lateral Association of α-Helices by Disulfide Cross-Linking. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:6977-6983. [PMID: 35613431 DOI: 10.1021/acs.langmuir.2c00533] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Amphipathic α-helical peptides have been reported to form discoidal particles or nanodiscs with phospholipids, in which a lipid bilayer patch is encircled by peptides. Peptide-based nanodiscs have broad applicability because of their ease of preparation, size flexibility, and structural plasticity. We previously revealed that the nanodiscs formed by apolipoprotein-A-I-derived peptide 18A showed temperature-dependent structural destabilization above the gel-to-liquid-crystalline phase transition temperature of the lipid bilayer. It has been suggested that this destabilization is due to the migration of peptides bound to the edge of the discs to the bilayer surface. In this study, we designed a peptide that could stabilize nanodisc structures against the phase transition of lipid bilayers by disulfide cross-linking of peptides. An 18A-dimer cross-linked by a proline residue, 37pA (Ac-18A-P-18A-CONH2), also showed thermal destabilization of nanodiscs like 18A. However, cross-linking the sides of the two α-helices of the cysteine-substituted analogue 37pA-C2 with disulfide bonds led to the formation of nanodiscs that were more stable to temperature changes. This stabilizing effect was mainly due to the formation of a cyclic 37pA-C2 monomer by intramolecular disulfide cross-linking. These results suggest that the lateral association of two α-helices, which is the basis of the double-belt structure, is an important factor for the implementation of stable nanodiscs. The results of this study will help in development of more stable nanoparticles with membrane proteins in the future.
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Affiliation(s)
- Chiharu Anada
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Keisuke Ikeda
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Hiroyuki Nakao
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
| | - Minoru Nakano
- Department of Biointerface Chemistry, Faculty of Pharmaceutical Sciences, University of Toyama, Sugitani 2630, Toyama 930-0194, Japan
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2
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Herman L, De Smedt SC, Raemdonck K. Pulmonary surfactant as a versatile biomaterial to fight COVID-19. J Control Release 2021; 342:170-188. [PMID: 34813878 PMCID: PMC8605818 DOI: 10.1016/j.jconrel.2021.11.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 11/13/2021] [Accepted: 11/15/2021] [Indexed: 02/06/2023]
Abstract
The COVID-19 pandemic has wielded an enormous pressure on global health care systems, economics and politics. Ongoing vaccination campaigns effectively attenuate viral spreading, leading to a reduction of infected individuals, hospitalizations and mortality. Nevertheless, the development of safe and effective vaccines as well as their global deployment is time-consuming and challenging. In addition, such preventive measures have no effect on already infected individuals and can show reduced efficacy against SARS-CoV-2 variants that escape vaccine-induced host immune responses. Therefore, it is crucial to continue the development of specific COVID-19 targeting therapeutics, including small molecular drugs, antibodies and nucleic acids. However, despite clear advantages of local drug delivery to the lung, inhalation therapy of such antivirals remains difficult. This review aims to highlight the potential of pulmonary surfactant (PS) in the treatment of COVID-19. Since SARS-CoV-2 infection can progress to COVID-19-related acute respiratory distress syndrome (CARDS), which is associated with PS deficiency and inflammation, replacement therapy with exogenous surfactant can be considered to counter lung dysfunction. In addition, due to its surface-active properties and membrane-interaction potential, PS can be repurposed to enhance drug spreading along the respiratory epithelium and to promote intracellular drug delivery. By merging these beneficial features, PS can be regarded as a versatile biomaterial to combat respiratory infections, in particular COVID-19.
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Affiliation(s)
- Lore Herman
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
| | - Stefaan C De Smedt
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
| | - Koen Raemdonck
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium.
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3
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Pedersbæk D, Simonsen JB. A systematic review of the biodistribution of biomimetic high-density lipoproteins in mice. J Control Release 2020; 328:792-804. [PMID: 32971201 DOI: 10.1016/j.jconrel.2020.09.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/17/2020] [Accepted: 09/18/2020] [Indexed: 12/18/2022]
Abstract
For the past two decades, biomimetic high-density lipoproteins (b-HDL) have been used for various drug delivery applications. The b-HDL mimic the endogenous HDL, and therefore possess many attractive features for drug delivery, including high biocompatibility, biodegradability, and ability to transport and deliver their cargo (e.g. drugs and/or imaging agents) to specific cells and tissues that are recognized by HDL. The b-HDL designs reported in the literature often differ in size, shape, composition, and type of incorporated cargo. However, there exists only limited insight into how the b-HDL design dictates their biodistribution. To fill this gap, we conducted a comprehensive systematic literature search of biodistribution studies using various designs of apolipoprotein A-I (apoA-I)-based b-HDL (i.e. b-HDL with apoA-I, apoA-I mutants, or apoA-I mimicking peptides). We carefully screened 679 papers (search hits) for b-HDL biodistribution studies in mice, and ended up with 24 relevant biodistribution profiles that we compared according to b-HDL design. We show similarities between b-HDL biodistribution studies irrespectively of the b-HDL design, whereas the biodistribution of the b-HDL components (lipids and scaffold) differ significantly. The b-HDL lipids primarily accumulate in liver, while the b-HDL scaffold primarily accumulates in the kidney. Furthermore, both b-HDL lipids and scaffold accumulate well in the tumor tissue in tumor-bearing mice. Finally, we present essential considerations and strategies for b-HDL labeling, and discuss how the b-HDL biodistribution can be tuned through particle design and administration route. Our meta-analysis and discussions provide a detailed overview of the fate of b-HDL in mice that is highly relevant when applying b-HDL for drug delivery or in vivo imaging applications.
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Affiliation(s)
- Dennis Pedersbæk
- Technical University of Denmark, Department of Health Technology, 2800 Kgs. Lyngby, Denmark
| | - Jens B Simonsen
- Technical University of Denmark, Department of Health Technology, 2800 Kgs. Lyngby, Denmark.
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4
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Bunker A, Róg T. Mechanistic Understanding From Molecular Dynamics Simulation in Pharmaceutical Research 1: Drug Delivery. Front Mol Biosci 2020; 7:604770. [PMID: 33330633 PMCID: PMC7732618 DOI: 10.3389/fmolb.2020.604770] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/02/2020] [Indexed: 12/12/2022] Open
Abstract
In this review, we outline the growing role that molecular dynamics simulation is able to play as a design tool in drug delivery. We cover both the pharmaceutical and computational backgrounds, in a pedagogical fashion, as this review is designed to be equally accessible to pharmaceutical researchers interested in what this new computational tool is capable of and experts in molecular modeling who wish to pursue pharmaceutical applications as a context for their research. The field has become too broad for us to concisely describe all work that has been carried out; many comprehensive reviews on subtopics of this area are cited. We discuss the insight molecular dynamics modeling has provided in dissolution and solubility, however, the majority of the discussion is focused on nanomedicine: the development of nanoscale drug delivery vehicles. Here we focus on three areas where molecular dynamics modeling has had a particularly strong impact: (1) behavior in the bloodstream and protective polymer corona, (2) Drug loading and controlled release, and (3) Nanoparticle interaction with both model and biological membranes. We conclude with some thoughts on the role that molecular dynamics simulation can grow to play in the development of new drug delivery systems.
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Affiliation(s)
- Alex Bunker
- Division of Pharmaceutical Biosciences, Drug Research Program, Faculty of Pharmacy, University of Helsinki, Helsinki, Finland
| | - Tomasz Róg
- Department of Physics, University of Helsinki, Helsinki, Finland
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5
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Dang AT, He W, Ivey DB, Coleman MA, Kuhl TL. Lipid and Protein Transfer between Nanolipoprotein Particles and Supported Lipid Bilayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12071-12078. [PMID: 31442053 PMCID: PMC7024587 DOI: 10.1021/acs.langmuir.9b01288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A nanolipoprotein particle (NLP) is a lipid bilayer disc stabilized by two amphipathic "scaffold" apolipoproteins. It has been most notably utilized as a tool for solubilizing a variety of membrane proteins while preserving structural and functional properties. Transfer of functional proteins from NLPs into model membrane systems such as supported lipid bilayers (SLBs) would enable new opportunities, for example, two-dimensional protein crystallization and studies on protein-protein interactions. This work used fluorescence microscopy and atomic force microscopy to investigate the interaction between NLPs and SLBs. When incubated with SLBs, NLPs were found to spontaneously deliver lipid and protein cargo. The impact of membrane composition on lipid exchange was explored, revealing a positive correlation between the magnitude of lipid transfer and concentration of defects in the target SLB. Incorporation of lipids capable of binding specifically to polyhistidine tags encoded into the apolipoproteins also boosted transfer of NLP cargo. Optimal conditions for lipid and protein delivery from NLPs to SLBs are proposed based on interaction mechanisms.
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Affiliation(s)
- Amanda T. Dang
- Department of Materials Science and Engineering, University of California, Davis CA 95616
| | - Wei He
- Lawrence Livermore National Laboratory, Livermore, CA 94550
| | - Daniela B. Ivey
- Department of Chemical Engineering, University of California, Davis CA 95616
| | | | - Tonya L. Kuhl
- Department of Chemical Engineering, University of California, Davis CA 95616
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Tahmasbi Rad A, Chen CW, Aresh W, Xia Y, Lai PS, Nieh MP. Combinational Effects of Active Targeting, Shape, and Enhanced Permeability and Retention for Cancer Theranostic Nanocarriers. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10505-10519. [PMID: 30793580 DOI: 10.1021/acsami.8b21609] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Combinatory modulation of the physical and biochemical characteristics of nanocarrier delivery systems is an emergent topic in the field of nanomedicine. Here, we studied the combined effects of incorporation of active targeting moieties into nanocarriers and their morphology affecting the enhanced permeation and retention effect for nanomedicine cancer therapy. Self-assembled lipid discoidal and vesicular nanoparticles with low-polydispersity sub-50 nm size range and identical chemical compositions were synthesized, characterized, and correlated with in vitro cancer cellular internalization, in vivo tumor accumulation and cancer treatments. The fact that folate-associated bicelle yields the best outcome is indicative of the preference for discoidal carriers over spherical carriers and the improved targeting efficacy due to the targeting ligand/receptor binding. The approach is successfully adopted to design the nanocarriers for photodynamic therapy, which yields a consistent trend in in vitro and in vivo efficacy: folate nanodiscs > folate vesicles > nonfolate nanodiscs > nonfolate vesicles. Folate discs not only have shown a higher tumor uptake and photothermal therapeutic efficiency, but also minimize skin photosensitivity side effects. The advantages of nanodiscoidal bicelles as nanocarriers, including well-defined size, robust formation, easy encapsulation of hydrophobic molecules (therapeutics and/or diagnostics), easy incorporation of targeting molecules, and low toxicity, enable the scalable manufacturing of a generalized in vivo multimodal delivery platform.
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Affiliation(s)
- Armin Tahmasbi Rad
- Polymer Program, Institute of Materials Sciences , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
| | - Ching-Wen Chen
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan , ROC
| | - Wafa Aresh
- Polymer Program, Institute of Materials Sciences , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
| | | | - Ping-Shan Lai
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan , ROC
| | - Mu-Ping Nieh
- Polymer Program, Institute of Materials Sciences , University of Connecticut , 191 Auditorium Road , Storrs , Connecticut 06269 , United States
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7
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Voelker DR, Numata M. Phospholipid regulation of innate immunity and respiratory viral infection. J Biol Chem 2019; 294:4282-4289. [PMID: 30733339 DOI: 10.1074/jbc.aw118.003229] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Toll-like receptors (TLRs) coupled to intracellular signaling cascades function as central elements of innate immunity that control transcription of numerous pro-inflammatory genes. Two minor anionic phospholipids present in the pulmonary surfactant complex, palmitoyl-oleoyl-phosphatidylglycerol (POPG) and phosphatidylinositol (PI), antagonize the cognate ligand activation of TLRs 2 and 4. The lipids block recognition of activating ligands by the TLRs, either directly or via the TLR4 coreceptors CD14 and MD2. Antagonism of TLR activation results in inhibition of the initiating step of the pro-inflammatory signaling pathways. Evidence for this mechanism of action comes from direct binding studies between CD14 and MD2 with POPG and PI. Additional evidence for this mechanism of antagonism also comes from monitoring the reduction of protein phosphorylation events that characterize the intracellular signaling by activated TLRs. The pathogenesis of respiratory syncytial virus (RSV) and influenza A virus (IAV) have been linked to TLR4 activation, and we examined the action of POPG and PI as potential antagonists of the pathology of these viruses. Surprisingly, POPG and PI dramatically curtail infection, in addition to inhibiting inflammatory sequelae associated with RSV and IAV infections. The mechanism of action by the lipids is disruption of virus particle binding to host cell plasma membrane receptors, required for viral uptake. The antagonism of activation of TLRs and virus binding to the alveolar epithelium by resident constituents of the pulmonary surfactant system suggests that POPG and PI function in homeostasis, to prevent inflammatory processes that result in reductions in gas exchange within the alveolar compartment.
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Affiliation(s)
- Dennis R Voelker
- From the Department of Medicine, Pulmonary Division, National Jewish Health, Denver, Colorado 80206
| | - Mari Numata
- From the Department of Medicine, Pulmonary Division, National Jewish Health, Denver, Colorado 80206
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8
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Yusuf Y, Massiot J, Chang YT, Wu PH, Yeh V, Kuo PC, Shiue J, Yu TY. Optimization of the Production of Covalently Circularized Nanodiscs and Their Characterization in Physiological Conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:3525-3532. [PMID: 29478317 DOI: 10.1021/acs.langmuir.8b00025] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Lipid nanodiscs are widely used platforms for studying membrane proteins in a near-native environment. Lipid nanodiscs made with membrane scaffold proteins (MSPs) in the linear form have been well studied. Recently, a new kind of nanodisc made with MSPs in the circular form, referred to as covalently circularized nanodiscs (cNDs), has been reported to have some possible advantages in various applications. Given the potential of nanodisc technology, researchers in the field are very interested in learning more about this new kind of nanodisc, such as its reproducibility, production yield, and the possible pros and cons of using it. However, research on these issues is lacking. Here, we report a new study on nanodiscs made with circular MSPs, which are produced from a method different from the previously reported method. We show that our novel production method, detergent-assisted sortase-mediated ligation, can effectively avoid high-molecular-weight byproducts and also significantly improve the yield of the target proteins up to around 80% for larger circular MSP constructs. In terms of the application of circular MSPs, we demonstrate that they can be used to assemble nanodiscs using both synthetic lipids and native lipid extract as the source of lipids. We also show that bacteriorhodopsin can be successfully incorporated into this new kind of cND. Moreover, we found that cNDs have improved stability against both heat and high-concentration-induced aggregations, making them more beneficial for related applications.
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Affiliation(s)
- Yustina Yusuf
- Institute of Atomic and Molecular Sciences , Academia Sinica , 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Julien Massiot
- Institute of Atomic and Molecular Sciences , Academia Sinica , 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Yu-Ting Chang
- Institute of Atomic and Molecular Sciences , Academia Sinica , 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Pei-Hao Wu
- Institute of Atomic and Molecular Sciences , Academia Sinica , 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Vivien Yeh
- Institute of Atomic and Molecular Sciences , Academia Sinica , 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Pai-Chia Kuo
- Institute of Physics , Academia Sinica , No. 128, Sec. 2, Academia Road , Taipei 11529 , Taiwan
| | - Jessie Shiue
- Institute of Physics , Academia Sinica , No. 128, Sec. 2, Academia Road , Taipei 11529 , Taiwan
| | - Tsyr-Yan Yu
- Institute of Atomic and Molecular Sciences , Academia Sinica , 1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
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9
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Patriarchi T, Shen A, He W, Baikoghli M, Cheng RH, Xiang YK, Coleman MA, Tian L. Nanodelivery of a functional membrane receptor to manipulate cellular phenotype. Sci Rep 2018; 8:3556. [PMID: 29476125 PMCID: PMC5824837 DOI: 10.1038/s41598-018-21863-3] [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: 09/18/2017] [Accepted: 02/12/2018] [Indexed: 01/01/2023] Open
Abstract
Modification of membrane receptor makeup is one of the most efficient ways to control input-output signals but is usually achieved by expressing DNA or RNA-encoded proteins or by using other genome-editing methods, which can be technically challenging and produce unwanted side effects. Here we develop and validate a nanodelivery approach to transfer in vitro synthesized, functional membrane receptors into the plasma membrane of living cells. Using β2-adrenergic receptor (β2AR), a prototypical G-protein coupled receptor, as an example, we demonstrated efficient incorporation of a full-length β2AR into a variety of mammalian cells, which imparts pharmacologic control over cellular signaling and affects cellular phenotype in an ex-vivo wound-healing model. Our approach for nanodelivery of functional membrane receptors expands the current toolkit for DNA and RNA-free manipulation of cellular function. We expect this approach to be readily applicable to the synthesis and nanodelivery of other types of GPCRs and membrane receptors, opening new doors for therapeutic development at the intersection between synthetic biology and nanomedicine.
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Affiliation(s)
- Tommaso Patriarchi
- University of California Davis, School of Medicine, Department of Biochemistry and Molecular Medicine, Davis, California, USA
| | - Ao Shen
- University of California Davis, School of Medicine, Department of Pharmacology, Davis, California, USA
| | - Wei He
- Lawrence Livermore National Laboratory, Livermore, California, USA
| | - Mo Baikoghli
- University of California Davis, Department of Molecular and Cellular Biology, California, USA
| | - R Holland Cheng
- University of California Davis, Department of Molecular and Cellular Biology, California, USA
| | - Yang K Xiang
- University of California Davis, School of Medicine, Department of Pharmacology, Davis, California, USA.,VA Northern California Health care system, Mather, California, USA
| | - Matthew A Coleman
- Lawrence Livermore National Laboratory, Livermore, California, USA. .,University of California Davis School of Medicine, Radiation Oncology, Sacramento, California, USA.
| | - Lin Tian
- University of California Davis, School of Medicine, Department of Biochemistry and Molecular Medicine, Davis, California, USA.
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10
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Lu J, Zhao Y, Zhou X, He JH, Yang Y, Jiang C, Qi Z, Zhang W, Liu J. Biofunctional Polymer–Lipid Hybrid High-Density Lipoprotein-Mimicking Nanoparticles Loading Anti-miR155 for Combined Antiatherogenic Effects on Macrophages. Biomacromolecules 2017; 18:2286-2295. [DOI: 10.1021/acs.biomac.7b00436] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jing Lu
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Yi Zhao
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Xiaoju Zhou
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Jian Hua He
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Yun Yang
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Cuiping Jiang
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Zitong Qi
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Wenli Zhang
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
| | - Jianping Liu
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 211198, P.R. China
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Abstract
Membrane proteins play a most important part in metabolism, signaling, cell motility, transport, development, and many other biochemical and biophysical processes which constitute fundamentals of life on the molecular level. Detailed understanding of these processes is necessary for the progress of life sciences and biomedical applications. Nanodiscs provide a new and powerful tool for a broad spectrum of biochemical and biophysical studies of membrane proteins and are commonly acknowledged as an optimal membrane mimetic system that provides control over size, composition, and specific functional modifications on the nanometer scale. In this review we attempted to combine a comprehensive list of various applications of nanodisc technology with systematic analysis of the most attractive features of this system and advantages provided by nanodiscs for structural and mechanistic studies of membrane proteins.
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Affiliation(s)
- Ilia G Denisov
- Department of Biochemistry and Department of Chemistry, University of Illinois , Urbana, Illinois 61801, United States
| | - Stephen G Sligar
- Department of Biochemistry and Department of Chemistry, University of Illinois , Urbana, Illinois 61801, United States
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12
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Fickes R, Voelker DR, Berry KZ, Murphy RC. Tandem mass spectrometry of novel ether-linked phospholipid analogs of anionic pulmonary surfactant phospholipids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:2601-2606. [PMID: 27689848 PMCID: PMC5121057 DOI: 10.1002/rcm.7750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 09/20/2016] [Accepted: 09/25/2016] [Indexed: 06/06/2023]
Abstract
RATIONALE Structural analogs of the bioactive lipid 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoglycerol were synthesized with a xylitol polar head group and both diacyl and diether radyl groups. Mass spectral characterization of xylitol phospholipids (PX) was carried out using collisional activation and high-resolution mass measurements of positive molecular ion species and compared with the phosphatidylglycerol (PG) analogs. METHODS PX were synthesized using a transphosphatidylation reaction catalyzed by phospholipase D and purified by high-performance liquid chromatography (HPLC). Compounds were subjected to electrospray ionization and collision-induced dissociation (CID) was performed using a tandem quadrupole mass spectrometer to generate positive and negative molecular ions. Diether phospholipids were additionally analyzed by high-resolution mass spectrometry as protonated and sodiated molecular species in positive ion mode. RESULTS Ester-linked PX analogs behaved similarly to PG after collisional activation of [M - H]- . The product ions formed by CID of the diether PG and PX negative ions only revealed information about the head group with no information about the aliphatic chains. In contrast, CID of protonated and sodiated diether phospholipid positive ions revealed reactions corresponding to cleavage of the ether chain, likely occurring by charge-driven reaction mechanisms. CONCLUSIONS Novel PX analogs with diacyl and diether radyl substituents of the glycerol backbone were characterized by tandem mass spectrometry. These unique diether phospholipid analogs enabled exploration of ether cleavage reactions of the positive molecular ion species resulting from collision-induced decomposition. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Rachel Fickes
- National Jewish Health, Department of Pediatrics, 1400 Jackson Street, Denver, CO 80206
- University of Colorado Denver, Department of Pharmacology, Mail Stop 8303, 12081 E. 17 Avenue, Aurora, CO 80045
| | - Dennis R. Voelker
- National Jewish Health, Department of Pediatrics, 1400 Jackson Street, Denver, CO 80206
| | - Karin Zemski Berry
- University of Colorado Denver, Department of Pharmacology, Mail Stop 8303, 12081 E. 17 Avenue, Aurora, CO 80045
| | - Robert C. Murphy
- University of Colorado Denver, Department of Pharmacology, Mail Stop 8303, 12081 E. 17 Avenue, Aurora, CO 80045
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13
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Nanodiscs for structural and functional studies of membrane proteins. Nat Struct Mol Biol 2016; 23:481-6. [PMID: 27273631 DOI: 10.1038/nsmb.3195] [Citation(s) in RCA: 328] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 02/24/2016] [Indexed: 12/12/2022]
Abstract
Membrane proteins have long presented a challenge to biochemical and functional studies. In the absence of a bilayer environment, individual proteins and critical macromolecular complexes may be insoluble and may display altered or absent activities. Nanodisc technology provides important advantages for the isolation, purification, structural resolution and functional characterization of membrane proteins. In addition, the ability to precisely control the nanodisc composition provides a nanoscale membrane surface for investigating molecular recognition events.
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14
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Kandasamy P, Numata M, Berry KZ, Fickes R, Leslie CC, Murphy RC, Voelker DR. Structural analogs of pulmonary surfactant phosphatidylglycerol inhibit toll-like receptor 2 and 4 signaling. J Lipid Res 2016; 57:993-1005. [PMID: 27095543 DOI: 10.1194/jlr.m065201] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Indexed: 12/21/2022] Open
Abstract
The pulmonary surfactant phospholipid, 1-palmitoyl-2-oleoylphosphatidylglycerol (POPG), potently inhibits toll-like receptor (TLR)2 and TLR4 signaling from the cell surface of macrophages. Analogs of POPG that vary in polar head group length, hydroxylation, and alkyl branching were synthesized using a phospholipase D-catalyzed transphosphatidylation reaction and a 1-palmitoyl-2-oleoyl phosphatidylcholine substrate. Lipid analogs with C3 and C4 alkyl head group length (POP-propanol and POP-butanol) are less effective than POPG as TLR2 and TLR4 antagonists. However, adding a hydroxyl group at the alkyl chain 3- or 4-position (POP-propanediols or POP-butanediols) greatly increased their inhibitory effects against TLR2 and TLR4. POP-2',2'-dimethylpropanediol is a weak inhibitor of TLR2 and TLR4 activation that results in arachidonic acid release, but an effective inhibitor of TLR4 activation that results in TNF-α production. Addition of an amino group at the alkyl-2 position (POP-2'-aminopropanediol) completely abolished the antagonism of TLRs 2 and 4. Multiple analogs strongly bind to the TLR4 coreceptors, cluster of differentiation 14 (CD14) and myeloid differentiation 2, but competition for di[3-deoxy-D-manno-octulosonyl]-lipid A binding to CD14 is the best predictor of biological activity at the cellular level. Collectively, these findings identify new compounds for antagonizing TLR2 and TLR4 activation and define structural properties of POPG analogs for discriminating between two TLR systems.
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Affiliation(s)
- Pitchaimani Kandasamy
- Departments of Medicine, Basic Science Section, National Jewish Health, Denver, CO 80206
| | - Mari Numata
- Departments of Medicine, Basic Science Section, National Jewish Health, Denver, CO 80206
| | | | - Rachel Fickes
- Departments of Medicine, Basic Science Section, National Jewish Health, Denver, CO 80206
| | | | - Robert C Murphy
- Department of Pharmacology, University of Colorado, Aurora, CO 80045
| | - Dennis R Voelker
- Departments of Medicine, Basic Science Section, National Jewish Health, Denver, CO 80206
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15
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Mutharasan RK, Foit L, Thaxton CS. High-Density Lipoproteins for Therapeutic Delivery Systems. J Mater Chem B 2016; 4:188-197. [PMID: 27069624 PMCID: PMC4825811 DOI: 10.1039/c5tb01332a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
High-density lipoproteins (HDL) are a class of natural nanostructures found in the blood and are composed of lipids, proteins, and nucleic acids (e.g. microRNA). Their size, which appears to be well-suited for both tissue penetration/retention as well as payload delivery, long circulation half-life, avoidance of endosomal sequestration, and potential low toxicity are all excellent properties to model in a drug delivery vehicle. In this review, we consider high-density lipoproteins for therapeutic delivery systems. First we discuss the structure and function of natural HDL, describing in detail its biogenesis and transformation from immature, discoidal forms, to more mature, spherical forms. Next we consider features of HDL making them suitable vehicles for drug delivery. We then describe the use of natural HDL, discoidal HDL analogs, and spherical HDL analogs to deliver various classes of drugs, including small molecules, lipids, and oligonucleotides. We briefly consider the notion that the drug delivery vehicles themselves are therapeutic, constituting entities that exhibit "theralivery." Finally, we discuss challenges and future directions in the field.
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Affiliation(s)
- R. Kannan Mutharasan
- Feinberg Cardiovascular Research Institute, 303 E. Chicago Ave., Tarry 14-725, Chicago, IL 60611 United States
| | - Linda Foit
- Feinberg School of Medicine, Department of Urology, Northwestern University, Tarry 16-703, 303 E. Chicago Ave, Chicago, IL 60611, USA
| | - C. Shad Thaxton
- Feinberg School of Medicine, Department of Urology, Northwestern University, Tarry 16-703, 303 E. Chicago Ave, Chicago, IL 60611, USA
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, 303 E. Superior St, Chicago, IL 60611, USA
- International Institute for Nanotechnology (IIN), 2145 Sheridan Road, Evanston, IL 60208, USA
- Robert H Lurie Comprehensive Cancer Center (RHLCCC), Northwestern University, Feinberg School of Medicine, 303 E Superior, Chicago, IL 60611, USA
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Csencsits-Smith K, Grushin K, Stoilova-McPhie S. Binding of Factor VIII to Lipid Nanodiscs Increases its Clotting Function in a Mouse Model of Hemophilia A. ACTA ACUST UNITED AC 2015; 6:325. [PMID: 28936365 PMCID: PMC5603210 DOI: 10.4172/2155-9864.1000325] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Background Hemophilia A is a congenital bleeding disorder caused by defective or deficient factor VIII (FVIII). The active form of FVIII is the co-factor for the serine protease factor IXa (FIXa) in the membrane-bound intrinsic tenase (FVIIIa-FIXa) complex. The assembly of the FVIIIa-FIXa complex on the activated platelet surface is critical for successful blood clotting. Objectives To characterize the role of lipid nanodiscs (ND) for on FVIII function in vivo and test the lipid ND as a delivery system for FVIII. To evaluate the potential of binding recombinant FVIII to ND as improved treatment for Hemophilia A. Methods Recombinant porcine FVIII (rpFVIII) was expressed and characterized in solution, and when bound to ND. The rpFVIII, ND and rpFVIII-ND complexes were characterized via transmission electron microscopy. Functional studies were carried out using aPTT tests and time resolved tail snip studies of hemophilic mice. Results Functional rpFVIII was successfully assembled on lipid ND. When injected in hemophilic mice, the rpFVIII-ND complexes showed a pronounced pro-coagulant effect, which was stronger than that of rpFVIII alone. While injection of the ND alone showed a pro-coagulant effect this effect was not additive, implying that the rpFVIII-ND complexes have a synergistic effect on the clotting process in hemophilic mice. Conclusions Binding of rpFVIII to ND prior to its injection in hemophilic mice significantly improves the therapeutic function of the protein. This represents a meaningful step towards a new approach to modulate blood coagulation at the membrane-bound FVIII level and the assembly of the intrinsic tenase complex.
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Affiliation(s)
- Keri Csencsits-Smith
- Department of Pathology and Laboratory Medicine, University of Texas Health Science Center, Houston, TX-77030, USA
| | - Krill Grushin
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX-77555, USA
| | - Svetla Stoilova-McPhie
- Department of Neuroscience and Cell Biology, University of Texas Medical Branch, Galveston, TX-77555, USA
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17
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Carney CE, Lenov IL, Baker CJ, MacRenaris KW, Eckermann AL, Sligar SG, Meade TJ. Nanodiscs as a Modular Platform for Multimodal MR-Optical Imaging. Bioconjug Chem 2015; 26:899-905. [PMID: 25830565 DOI: 10.1021/acs.bioconjchem.5b00107] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Nanodiscs are monodisperse, self-assembled discoidal particles that consist of a lipid bilayer encircled by membrane scaffold proteins (MSP). Nanodiscs have been used to solubilize membrane proteins for structural and functional studies and deliver therapeutic phospholipids. Herein, we report on tetramethylrhodamine (TMR) tagged nanodiscs that solubilize lipophilic MR contrast agents for generation of multimodal nanoparticles for cellular imaging. We incorporate both multimeric and monomeric Gd(III)-based contrast agents into nanodiscs and show that particles containing the monomeric agent (ND2) label cells with high efficiency and generate significant image contrast at 7 T compared to nanodiscs containing the multimeric agent (ND1) and Prohance, a clinically approved contrast agent.
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Affiliation(s)
- Christiane E Carney
- †Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ivan L Lenov
- ‡Department of Biochemistry, 505 South Goodwin Avenue, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Catherine J Baker
- ‡Department of Biochemistry, 505 South Goodwin Avenue, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Keith W MacRenaris
- †Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Amanda L Eckermann
- †Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Stephen G Sligar
- ‡Department of Biochemistry, 505 South Goodwin Avenue, University of Illinois Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Thomas J Meade
- †Department of Chemistry, Molecular Biosciences, Neurobiology, Biomedical Engineering, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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18
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Numata M, Kandasamy P, Nagashima Y, Fickes R, Murphy RC, Voelker DR. Phosphatidylinositol inhibits respiratory syncytial virus infection. J Lipid Res 2015; 56:578-587. [PMID: 25561461 DOI: 10.1194/jlr.m055723] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Respiratory syncytial virus (RSV) infects nearly all children under age 2, and reinfection occurs throughout life, seriously impacting adults with chronic pulmonary diseases. Recent data demonstrate that the anionic pulmonary surfactant lipid phosphatidylglycerol (PG) exerts a potent antiviral effect against RSV in vitro and in vivo. Phosphatidylinositol (PI) is also an anionic pulmonary surfactant phospholipid, and we tested its antiviral activity. PI liposomes completely suppress interleukin-8 production from BEAS2B epithelial cells challenged with RSV. The presence of PI during viral challenge in vitro reduces infection by a factor of >10(3). PI binds RSV with high affinity, preventing virus attachment to epithelial cells. Intranasal inoculation with PI along with RSV in mice reduces the viral burden 30-fold, eliminates the influx of inflammatory cells, and reduces tissue histopathology. Pharmacological doses of PI persist for >6 h in mouse lung. Pretreatment of mice with PI at 2 h prior to viral infection effectively suppresses inflammation and reduces the viral burden by 85%. These data demonstrate that PI has potent antiviral properties, a long residence time in the extracellular bronchoalveolar compartment, and a significant prophylaxis window. The findings demonstrate PG and PI have complementary roles as intrinsic, innate immune antiviral mediators in the lung.
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Affiliation(s)
- Mari Numata
- Department of Medicine, Program in Cell Biology, National Jewish Health, Denver, CO 80206
| | - Pitchaimani Kandasamy
- Department of Medicine, Program in Cell Biology, National Jewish Health, Denver, CO 80206
| | - Yoji Nagashima
- Department of Pathology, Yokohama City University School of Medicine, Yokohama, Japan
| | - Rachel Fickes
- Department of Medicine, Program in Cell Biology, National Jewish Health, Denver, CO 80206
| | - Robert C Murphy
- Department of Pharmacology, University of Colorado, Denver, CO 80045
| | - Dennis R Voelker
- Department of Medicine, Program in Cell Biology, National Jewish Health, Denver, CO 80206.
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