401
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Hoppens MA, Sylvester CB, Qureshi AT, Scherr T, Czapski DR, Duran RS, Savage PB, Hayes D. Ceragenin mediated selectivity of antimicrobial silver nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13900-13908. [PMID: 25054867 DOI: 10.1021/am504640f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The understanding that common broad-spectrum antimicrobials disrupt natural microbial flora important in acquiring nutrients and preventing infection has resulted in a paradigm shift favoring more selective antimicrobials. This work explores silver nanoparticles conjugated with ceragenin, or cationic antimicrobials (CSA-SNPs), as a potential Gram-positive selective antimicrobial. Herein, CSA-SNPs are characterized using transmission electron microscopy (TEM), dynamic light scattering (DLS), zeta potential, and high-performance liquid chromatography-electrospray time-of-flight mass spectrometry (HPLC-ESI-TOF-MS). The antimicrobial properties are determined through minimum inhibitory concentration/minimum bactericidal concentration (MIC/MBC) and time-kill studies. Spatial selectivity of the conjugate nanoparticle was evaluated using confocal imaging, MATLAB statistical analysis, and video monitored interactions between bacteria and CSA-SNPs via laser trapping techniques. Cytotoxicity was also determined by live/dead staining and flow cytometry. Average particle size, as determined through TEM analysis, and hydrodynamic diameter, as determined via DLS, are 63.5 ± 38.8 and 102.23 ± 2.3 nm, respectively. The zeta potential of the SNP before and after CSA attachment is -18.23 and -8.34 mV, respectively. MIC/MBC data suggest that CSA-SNPs are 8 times more effective against Staphylococcus aureus than SNPs alone. Furthermore, MATLAB analysis of confocal imaging found that 70% of CSA-SNPs are within 2 μm of S. aureus, whereas this percentage falls to below 40% with respect to Escherichia coli. These results are bolstered further by laser trapping experiments demonstrating selective adherence of CSA-SNPs conjugates with bacterial strains. Cytotoxicity studies of CSA-SNPs against 3T3 fibroblasts indicate 50% cell viability at 50 ppm.
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Affiliation(s)
- Mark A Hoppens
- Department of Biological and Agricultural Engineering, Louisiana State University and LSU Agcenter , 149 E. B. Doran Building, Baton Rouge, Louisiana 70803, United States
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402
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Bühler J, Gietzen S, Reuter A, Kappel C, Fischer K, Decker S, Schäffel D, Koynov K, Bros M, Tubbe I, Grabbe S, Schmidt M. Selective Uptake of Cylindrical Poly(2-Oxazoline) Brush-AntiDEC205 Antibody-OVA Antigen Conjugates into DEC-Positive Dendritic Cells and Subsequent T-Cell Activation. Chemistry 2014; 20:12405-10. [DOI: 10.1002/chem.201403942] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Indexed: 01/20/2023]
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403
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Peng Q, Wei XQ, Shao XR, Zhang T, Zhang S, Fu N, Cai XX, Zhang ZR, Lin YF. Nanocomplex Based on Biocompatible Phospholipids and Albumin for Long-Circulation Applications. ACS APPLIED MATERIALS & INTERFACES 2014; 6:13730-7. [PMID: 25058846 DOI: 10.1021/am503179a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Qiang Peng
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xue-Qin Wei
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xiao-Ru Shao
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Ting Zhang
- Key Laboratory
of Drug Targeting and Drug Delivery Systems, Ministry of Education,
West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Shu Zhang
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Na Fu
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Xiao-Xiao Cai
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
| | - Zhi-Rong Zhang
- Key Laboratory
of Drug Targeting and Drug Delivery Systems, Ministry of Education,
West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yun-Feng Lin
- State Key Laboratory
of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China
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404
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Rabanel JM, Hildgen P, Banquy X. Assessment of PEG on polymeric particles surface, a key step in drug carrier translation. J Control Release 2014; 185:71-87. [DOI: 10.1016/j.jconrel.2014.04.017] [Citation(s) in RCA: 177] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/10/2014] [Accepted: 04/11/2014] [Indexed: 12/15/2022]
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405
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Chen K, Xu J, Luft JC, Tian S, Raval JS, DeSimone JM. Design of asymmetric particles containing a charged interior and a neutral surface charge: comparative study on in vivo circulation of polyelectrolyte microgels. J Am Chem Soc 2014; 136:9947-52. [PMID: 24941029 PMCID: PMC4227716 DOI: 10.1021/ja503939n] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
![]()
Lowering
the modulus of hydrogel particles could enable them to
bypass in vivo physical barriers that would otherwise
filter particles with similar size but higher modulus. Incorporation
of electrolyte moieties into the polymer network of hydrogel particles
to increase the swelling ratio is a straightforward and quite efficient
way to decrease the modulus. In addition, charged groups in hydrogel
particles can also help secure cargoes. However, the distribution
of charged groups on the surface of a particle can accelerate the
clearance of particles. Herein, we developed a method to synthesize
highly swollen microgels of precise size with near-neutral surface
charge while retaining interior charged groups. A strategy was employed
to enable a particle to be highly cross-linked with very small mesh
size, and subsequently PEGylated to quench the exterior amines only
without affecting the internal amines. Acidic degradation of the cross-linker
allows for swelling of the particles to microgels with a desired size
and deformability. The microgels fabricated demonstrated extended
circulation in vivo compared to their counterparts
with a charged surface, and could potentially be utilized in in vivo applications including as oxygen carriers or nucleic
acid scavengers.
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Affiliation(s)
- Kai Chen
- Department of Chemistry, ‡Lineberger Comprehensive Cancer Center, §Institute for Nanomedicine, ∥School of Pharmacy, ⊥Department of Pathology and Laboratory Medicine, #Institute for Advanced Materials, University of North Carolina , Chapel Hill, North Carolina 27599, United States
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406
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Design and processing of nanogels as delivery systems for peptides and proteins. Ther Deliv 2014; 5:691-708. [DOI: 10.4155/tde.14.38] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Nanogels, cross-linked networks of >1 μm in size, are attractive drug-delivery systems, as they not only possess the potential advantages of nanoscale formulations, but also the attractive abilities of a hydrogel; high hydrophilicity, high loading capacity and the potential for biocompatibility and controlled release. The focus of this review is to provide an overview of the recent developments within the nanogel field, and how the chemical design of the nanogel polymer has been found to influence the properties of the nanogel system. Novel nanogel systems are discussed with respect to their type of cross-linkage and their suitability as therapeutic delivery systems, as well as their ability to stabilize the protein/peptide drug.
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407
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Abou-Saleh RH, Swain M, Evans SD, Thomson NH. Poly(ethylene glycol) lipid-shelled microbubbles: abundance, stability, and mechanical properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5557-63. [PMID: 24758714 DOI: 10.1021/la404804u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Poly(ethylene glycol) (PEG) is widely used on the outside of biomedical delivery vehicles to impart stealth properties. Encapsulated gas microbubbles (MBs) are being increasingly considered as effective carriers for therapeutic intervention to deliver drug payloads or genetic vectors. MBs have the advantage that they can be imaged and manipulated by ultrasound fields with great potential for targeted therapy and diagnostic purposes. Lipid-shelled MBs are biocompatible and can be functionalized on the outer surface for tissue targeting and new therapeutic methods. As MBs become a key route for drug delivery, exploring the effect of PEG-ylation on the MB properties is important. Here, we systematically investigate the effect of PEG-lipid solution concentration ranging between 0 and 35 mol % on the formation of MBs in a microfluidic flow-focusing device. The abundance of the MBs is correlated with the MB lifetime and the whole MB mechanical response, as measured by AFM compression using a tipless cantilever. The maximal MB concentration and stability (lifetime) occurs at a low concentration of PEG-lipid (∼5 mol %). For higher PEG-lipid concentrations, the lifetime and MB concentration decrease, and are accompanied by a correlation between the predicted surface PEG configuration and the whole MB stiffness, as measured at higher compression loads. These results inform the rationale design and fabrication of lipid-based MBs for therapeutic applications and suggest that only relatively small amounts of PEG incorporation are required for optimizing MB abundance and stability while retaining similar mechanical response at low loads.
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Affiliation(s)
- Radwa H Abou-Saleh
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds , Leeds LS2 9JT, United Kingdom
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408
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Finch G, Havel H, Analoui M, Barton RW, Diwan AR, Hennessy M, Reddy V, Sadrieh N, Tamarkin L, Wolfgang M, Yerxa B, Zolnik B, Liu M. Nanomedicine drug development: a scientific symposium entitled "Charting a roadmap to commercialization". AAPS JOURNAL 2014; 16:698-704. [PMID: 24821054 DOI: 10.1208/s12248-014-9608-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 04/08/2014] [Indexed: 01/28/2023]
Abstract
The use of nanotechnology in medicine holds great promise for revolutionizing a variety of therapies. The past decade witnessed dramatic advancements in scientific research in nanomedicines, although significant challenges still exist in nanomedicine design, characterization, development, and manufacturing. In March 2013, a two-day symposium "Nanomedicines: Charting a Roadmap to Commercialization," sponsored and organized by the Nanomedicines Alliance, was held to facilitate better understanding of the current science and investigative approaches and to identify and discuss challenges and knowledge gaps in nanomedicine development programs. The symposium provided a forum for constructive dialogue among key stakeholders in five distinct areas: nanomedicine design, preclinical pharmacology, toxicology, CMC (chemistry, manufacturing, and control), and clinical development. In this meeting synopsis, we highlight key points from plenary presentations and focus on discussions and recommendations from breakout sessions of the symposium.
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409
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Barua S, Mitragotri S. Challenges associated with Penetration of Nanoparticles across Cell and Tissue Barriers: A Review of Current Status and Future Prospects. NANO TODAY 2014; 9:223-243. [PMID: 25132862 PMCID: PMC4129396 DOI: 10.1016/j.nantod.2014.04.008] [Citation(s) in RCA: 679] [Impact Index Per Article: 67.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Nanoparticles (NPs) have emerged as an effective modality for the treatment of various diseases including cancer, cardiovascular and inflammatory diseases. Various forms of NPs including liposomes, polymer particles, micelles, dendrimers, quantum dots, gold NPs and carbon nanotubes have been synthesized and tested for therapeutic applications. One of the greatest challenges that limit the success of NPs is their ability to reach the therapeutic site at necessary doses while minimizing accumulation at undesired sites. The biodistribution of NPs is determined by body's biological barriers that manifest in several distinct ways. For intravascular delivery of NPs, the barrier manifests in the form of: (i) immune clearance in the liver and spleen, (ii) permeation across the endothelium into target tissues, (iii) penetration through the tissue interstitium, (iv) endocytosis in target cells, (v) diffusion through cytoplasm and (vi) eventually entry into the nucleus, if required. Certain applications of NPs also rely on delivery through alternate routes including skin and mucosal membranes of the nose, lungs, intestine and vagina. In these cases, the diffusive resistance of these tissues poses a significant barrier to delivery. This review focuses on the current understanding of penetration of NPs through biological barriers. Emphasis is placed on transport barriers and not immunological barriers. The review also discusses design strategies for overcoming the barrier properties.
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Affiliation(s)
- Sutapa Barua
- Center for Bioengineering, Department of Chemical Engineering University of California, Santa Barbara, CA 93106
| | - Samir Mitragotri
- Center for Bioengineering, Department of Chemical Engineering University of California, Santa Barbara, CA 93106
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410
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Yang Q, Jones SW, Parker CL, Zamboni WC, Bear JE, Lai SK. Evading Immune Cell Uptake and Clearance Requires PEG Grafting at Densities Substantially Exceeding the Minimum for Brush Conformation. Mol Pharm 2014; 11:1250-8. [DOI: 10.1021/mp400703d] [Citation(s) in RCA: 178] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qi Yang
- Division of Molecular Pharmaceutics, ‡Department of Cell
Biology and
Physiology, §Division of Pharmacotherapy and Experimental Therapeutics, ∥Department of Pharmacology, ⊥UNC Lineberger Cancer
Center, ¶Carolina Center of Cancer Nanotechnology Excellence, #Howard Hughes Medical Institute, and ▽UNC/NCSU Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Stephen W. Jones
- Division of Molecular Pharmaceutics, ‡Department of Cell
Biology and
Physiology, §Division of Pharmacotherapy and Experimental Therapeutics, ∥Department of Pharmacology, ⊥UNC Lineberger Cancer
Center, ¶Carolina Center of Cancer Nanotechnology Excellence, #Howard Hughes Medical Institute, and ▽UNC/NCSU Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Christina L. Parker
- Division of Molecular Pharmaceutics, ‡Department of Cell
Biology and
Physiology, §Division of Pharmacotherapy and Experimental Therapeutics, ∥Department of Pharmacology, ⊥UNC Lineberger Cancer
Center, ¶Carolina Center of Cancer Nanotechnology Excellence, #Howard Hughes Medical Institute, and ▽UNC/NCSU Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - William C. Zamboni
- Division of Molecular Pharmaceutics, ‡Department of Cell
Biology and
Physiology, §Division of Pharmacotherapy and Experimental Therapeutics, ∥Department of Pharmacology, ⊥UNC Lineberger Cancer
Center, ¶Carolina Center of Cancer Nanotechnology Excellence, #Howard Hughes Medical Institute, and ▽UNC/NCSU Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - James E. Bear
- Division of Molecular Pharmaceutics, ‡Department of Cell
Biology and
Physiology, §Division of Pharmacotherapy and Experimental Therapeutics, ∥Department of Pharmacology, ⊥UNC Lineberger Cancer
Center, ¶Carolina Center of Cancer Nanotechnology Excellence, #Howard Hughes Medical Institute, and ▽UNC/NCSU Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Samuel K. Lai
- Division of Molecular Pharmaceutics, ‡Department of Cell
Biology and
Physiology, §Division of Pharmacotherapy and Experimental Therapeutics, ∥Department of Pharmacology, ⊥UNC Lineberger Cancer
Center, ¶Carolina Center of Cancer Nanotechnology Excellence, #Howard Hughes Medical Institute, and ▽UNC/NCSU Joint
Department of Biomedical Engineering, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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411
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Lisse D, Richter CP, Drees C, Birkholz O, You C, Rampazzo E, Piehler J. Monofunctional stealth nanoparticle for unbiased single molecule tracking inside living cells. NANO LETTERS 2014; 14:2189-2195. [PMID: 24655019 DOI: 10.1021/nl500637a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
On the basis of a protein cage scaffold, we have systematically explored intracellular application of nanoparticles for single molecule studies and discovered that recognition by the autophagy machinery plays a key role for rapid metabolism in the cytosol. Intracellular stealth nanoparticles were achieved by heavy surface PEGylation. By combination with a generic approach for nanoparticle monofunctionalization, efficient labeling of intracellular proteins with high fidelity was accomplished, allowing unbiased long-term tracking of proteins in the outer mitochondrial membrane.
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Affiliation(s)
- Domenik Lisse
- Department of Biology, University of Osnabrück , Osnabrück, Germany
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412
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Rahmani S, Saha S, Durmaz H, Donini A, Misra AC, Yoon J, Lahann J. Chemically orthogonal three-patch microparticles. Angew Chem Int Ed Engl 2014; 53:2332-8. [PMID: 24574030 PMCID: PMC5550901 DOI: 10.1002/anie.201310727] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Indexed: 12/24/2022]
Abstract
Compared to two-dimensional substrates, only a few methodologies exist for the spatially controlled decoration of three-dimensional objects, such as microparticles. Combining electrohydrodynamic co-jetting with synthetic polymer chemistry, we were able to create two- and three-patch microparticles displaying chemically orthogonal anchor groups on three distinct surface patches of the same particle. This approach takes advantage of a combination of novel chemically orthogonal polylactide-based polymers and their processing by electrohydrodynamic co-jetting to yield unprecedented multifunctional microparticles. Several micropatterned particles were fabricated displaying orthogonal click functionalities. Specifically, we demonstrate novel two- and three-patch particles. Multi-patch particles are highly sought after for their potential to present multiple distinct ligands in a directional manner. This work clearly establishes a viable route towards orthogonal reaction strategies on multivalent micropatterned particles.
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Affiliation(s)
- Sahar Rahmani
- Department of Biomedical Engineering, Chemical Engineering, Macromolecular Science and Engineering, Material Science and Engineering, University of Michigan, Ann Arbor, 48109 (USA) http://www.umich.edu/∼lahannj/index.htm; Institute of Functional Interfaces, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)
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413
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Rahmani S, Saha S, Durmaz H, Donini A, Misra AC, Yoon J, Lahann J. Chemically Orthogonal Three-Patch Microparticles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310727] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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414
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Shukla S, Wen AM, Ayat NR, Commandeur U, Gopalkrishnan R, Broome AM, Lozada KW, Keri RA, Steinmetz NF. Biodistribution and clearance of a filamentous plant virus in healthy and tumor-bearing mice. Nanomedicine (Lond) 2014. [DOI: 10.2217/nnm.13.75] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Aim: Nanoparticles based on plant viruses are emerging biomaterials for medical applications such as drug delivery and imaging. Their regular structures can undergo genetic and chemical modifications to carry large payloads of cargos, as well as targeting ligands. Of several such platforms under development, only few have been characterized in vivo. We recently introduced the filamentous plant virus, potato virus X (PVX), as a new platform. PVX presents with a unique nanoarchitecture and is difficult to synthesize chemically. Methods: Here, we present a detailed analysis of PVX biodistribution and clearance in healthy mice and mouse tumor xenograft models using a combination of ex vivo whole-organ imaging, quantitative fluorescence assays and immunofluorescence microscopy. Results & conclusion: While up to 30% of the PVX signal was from the colon, mammary and brain tumor tissues, remaining particles were cleared by the reticuloendothelial system organs (the spleen and liver), followed by slower processing and clearance through the kidneys and bile. Original submitted 7 November 2012; Revised submitted 19 January 2013; Published online 9 July 2013
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Affiliation(s)
- Sourabh Shukla
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Amy M Wen
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Nadia R Ayat
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Ulrich Commandeur
- Institute for Molecular Biotechnology, RWTH Aachen University, Worringer Weg 1, 52074 Aachen, Germany
| | - Ramamurthy Gopalkrishnan
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Ann-Marie Broome
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, Current address: Center for Biomedical Imaging, Department of Radiology & Radiological Sciences, Medical University of South Carolina, 68 President Street, Charleston, SC 29425, USA
| | - Kristen W Lozada
- Department of Pharmacology, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Ruth A Keri
- Department of Pharmacology, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA and Department of Genetics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA and Division of General Medical Sciences-Oncology, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Nicole F Steinmetz
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA and Department of Radiology, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA and Department of Materials Science & Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, OH 44106, USA
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415
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Alhasan AH, Patel PC, Choi CHJ, Mirkin CA. Exosome encased spherical nucleic acid gold nanoparticle conjugates as potent microRNA regulation agents. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:186-92. [PMID: 24106176 PMCID: PMC3947239 DOI: 10.1002/smll.201302143] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Indexed: 05/25/2023]
Abstract
Exosomes are a class of naturally occurring nanomaterials that play crucial roles in the protection and transport of endogenous macromolecules, such as microRNA and mRNA, over long distances. Intense effort is underway to exploit the use of exosomes to deliver synthetic therapeutics. Herein, transmission electron microscopy is used to show that when spherical nucleic acid (SNA) constructs are endocytosed into PC-3 prostate cancer cells, a small fraction of them (<1%) can be naturally sorted into exosomes. The exosome-encased SNAs are secreted into the extracellular environment from which they can be isolated and selectively re-introduced into the cell type from which they were derived. In the context of anti-miR21 experiments, the exosome-encased SNAs knockdown miR-21 target by approximately 50%. Similar knockdown of miR-21 by free SNAs requires a ≈3000-fold higher concentration.
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Affiliation(s)
- Ali H. Alhasan
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
- Interdepartmental Biological Sciences Program, Northwestern University, 2205 Tech Drive, Evanston, IL 60208-3113, USA
| | - Pinal C. Patel
- AuraSense Therapeutics, LLC, 8045 Lamon Avenue, Suite 410, Skokie, IL 60077
| | - Chung Hang J. Choi
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
| | - Chad A. Mirkin
- Department of Chemistry and International Institute for Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113, USA
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416
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Hu CMJ, Fang RH, Luk BT, Zhang L. Polymeric nanotherapeutics: clinical development and advances in stealth functionalization strategies. NANOSCALE 2014; 6:65-75. [PMID: 24280870 DOI: 10.1039/c3nr05444f] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Long-circulating polymeric nanotherapeutics have garnered increasing interest in research and in the clinic owing to their ability to improve the solubility and pharmacokinetics of therapeutic cargoes. Modulation of carrier properties promises more effective drug localization at the disease sites and can lead to enhanced drug safety and efficacy. In the present review, we highlight the current development of polymeric nanotherapeutics in the clinic. In light of the importance of stealth properties in therapeutic nanoparticles, we also review the advances in stealth functionalization strategies and examine the performance of different stealth polymers in the literature. In addition, we discuss the recent development of biologically inspired "self" nanoparticles, which present a differing stealth concept from conventional approaches.
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Affiliation(s)
- Che-Ming J Hu
- Department of NanoEngineering and Moores Cancer Center, University of California, La Jolla, San Diego, CA 92093, USA.
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417
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Clemments AM, Muniesa C, Landry CC, Botella P. Effect of surface properties in protein corona development on mesoporous silica nanoparticles. RSC Adv 2014. [DOI: 10.1039/c4ra03277b] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The composition of the protein corona formed on mesoporous silica nanoparticles with several surface modifications was characterized.
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Affiliation(s)
| | - Carlos Muniesa
- Instituto de Tecnología Química (UPV-CSIC)
- 46022 Valencia, Spain
| | | | - Pablo Botella
- Instituto de Tecnología Química (UPV-CSIC)
- 46022 Valencia, Spain
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418
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Tatini F, Landini I, Scaletti F, Massai L, Centi S, Ratto F, Nobili S, Romano G, Fusi F, Messori L, Mini E, Pini R. Size dependent biological profiles of PEGylated gold nanorods. J Mater Chem B 2014; 2:6072-6080. [DOI: 10.1039/c4tb00991f] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interactions with proteins, cytotoxicity and blood compatibility of PEGylated gold nanorods are reviewed as a function of particle size.
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Affiliation(s)
- Francesca Tatini
- Institute of Applied Physics “Nello Carrara”
- National Research Council
- Sesto Fiorentino, 50019 Italy
| | - Ida Landini
- Dept. of Experimental and Clinical Medicine
- University of Florence
- Firenze, 50139 Italy
| | - Federica Scaletti
- Dept. of Chemistry “Ugo Shiff”
- University of Florence
- Sesto Fiorentino, 50019 Italy
| | - Lara Massai
- Dept. of Chemistry “Ugo Shiff”
- University of Florence
- Sesto Fiorentino, 50019 Italy
| | - Sonia Centi
- Dept. of Experimental and Clinical Biomedical Sciences
- University of Florence
- Firenze, 50139 Italy
| | - Fulvio Ratto
- Institute of Applied Physics “Nello Carrara”
- National Research Council
- Sesto Fiorentino, 50019 Italy
| | - Stefania Nobili
- Dept. of Experimental and Clinical Medicine
- University of Florence
- Firenze, 50139 Italy
| | - Giovanni Romano
- Dept. of Experimental and Clinical Biomedical Sciences
- University of Florence
- Firenze, 50139 Italy
| | - Franco Fusi
- Dept. of Experimental and Clinical Biomedical Sciences
- University of Florence
- Firenze, 50139 Italy
| | - Luigi Messori
- Dept. of Chemistry “Ugo Shiff”
- University of Florence
- Sesto Fiorentino, 50019 Italy
| | - Enrico Mini
- Dept. of Experimental and Clinical Medicine
- University of Florence
- Firenze, 50139 Italy
| | - Roberto Pini
- Institute of Applied Physics “Nello Carrara”
- National Research Council
- Sesto Fiorentino, 50019 Italy
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419
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Nanomedicine: The Promise and Challenges in Cancer Chemotherapy. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 811:207-33. [DOI: 10.1007/978-94-017-8739-0_11] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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420
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Valencia PM, Pridgen EM, Rhee M, Langer R, Farokhzad OC, Karnik R. Microfluidic platform for combinatorial synthesis and optimization of targeted nanoparticles for cancer therapy. ACS NANO 2013; 7:10671-80. [PMID: 24215426 PMCID: PMC3963607 DOI: 10.1021/nn403370e] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Taking a nanoparticle (NP) from discovery to clinical translation has been slow compared to small molecules, in part by the lack of systems that enable their precise engineering and rapid optimization. In this work we have developed a microfluidic platform for the rapid, combinatorial synthesis and optimization of NPs. The system takes in a number of NP precursors from which a library of NPs with varying size, surface charge, target ligand density, and drug load is produced in a reproducible manner. We rapidly synthesized 45 different formulations of poly(lactic-co-glycolic acid)-b-poly(ethylene glycol) NPs of different size and surface composition and screened and ranked the NPs for their ability to evade macrophage uptake in vitro. Comparison of the results to pharmacokinetic studies in vivo in mice revealed a correlation between in vitro screen and in vivo behavior. Next, we selected NP synthesis parameters that resulted in longer blood half-life and used the microfluidic platform to synthesize targeted NPs with varying targeting ligand density (using a model targeting ligand against cancer cells). We screened NPs in vitro against prostate cancer cells as well as macrophages, identifying one formulation that exhibited high uptake by cancer cells yet similar macrophage uptake compared to nontargeted NPs. In vivo, the selected targeted NPs showed a 3.5-fold increase in tumor accumulation in mice compared to nontargeted NPs. The developed microfluidic platform in this work represents a tool that could potentially accelerate the discovery and clinical translation of NPs.
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Affiliation(s)
- Pedro M. Valencia
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Eric M. Pridgen
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Minsoung Rhee
- Laboratory of Nanomedicine and Biomaterials and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Robert Langer
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- MIT-Harvard Center for Cancer Nanotechnology Excellence, Massachusetts Institute of Technology, Cambridge, MA 02139
- To whom correspondence should be addressed. Omid C. Farokhzad Laboratory of Nanomedicine and Biomaterials and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115. ; Rohit Karnik Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139. ; Robert Langer Department of Chemical Engineering and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Omid C. Farokhzad
- Laboratory of Nanomedicine and Biomaterials and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115
- MIT-Harvard Center for Cancer Nanotechnology Excellence, Massachusetts Institute of Technology, Cambridge, MA 02139
- To whom correspondence should be addressed. Omid C. Farokhzad Laboratory of Nanomedicine and Biomaterials and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115. ; Rohit Karnik Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139. ; Robert Langer Department of Chemical Engineering and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Rohit Karnik
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- To whom correspondence should be addressed. Omid C. Farokhzad Laboratory of Nanomedicine and Biomaterials and Department of Anesthesiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115. ; Rohit Karnik Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139. ; Robert Langer Department of Chemical Engineering and David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139
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421
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Anselmo AC, Gupta V, Zern BJ, Pan D, Zakrewsky M, Muzykantov V, Mitragotri S. Delivering nanoparticles to lungs while avoiding liver and spleen through adsorption on red blood cells. ACS NANO 2013; 7:11129-37. [PMID: 24182189 PMCID: PMC4128963 DOI: 10.1021/nn404853z] [Citation(s) in RCA: 239] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Nanoparticulate drug delivery systems are one of the most widely investigated approaches for developing novel therapies for a variety of diseases. However, rapid clearance and poor targeting limit their clinical utility. Here, we describe an approach to harness the flexibility, circulation, and vascular mobility of red blood cells (RBCs) to simultaneously overcome these limitations (cellular hitchhiking). A noncovalent attachment of nanoparticles to RBCs simultaneously increases their level in blood over a 24 h period and allows transient accumulation in the lungs, while reducing their uptake by liver and spleen. RBC-adsorbed nanoparticles exhibited ∼3-fold increase in blood persistence and ∼7-fold higher accumulation in lungs. RBC-adsorbed nanoparticles improved lung/liver and lung/spleen nanoparticle accumulation by over 15-fold and 10-fold, respectively. Accumulation in lungs is attributed to mechanical transfer of particles from the RBC surface to lung endothelium. Independent tracing of both nanoparticles and RBCs in vivo confirmed that RBCs themselves do not accumulate in lungs. Attachment of anti-ICAM-1 antibody to the exposed surface of NPs that were attached to RBCs led to further increase in lung targeting and retention over 24 h. Cellular hitchhiking onto RBCs provides a new platform for improving the blood pharmacokinetics and vascular delivery of nanoparticles while simultaneously avoiding uptake by liver and spleen, thus opening the door for new applications.
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Affiliation(s)
- Aaron C. Anselmo
- Department of Chemical Engineering, Center for Bioengineering, University of California, Santa Barbara, CA 93106
| | - Vivek Gupta
- Department of Chemical Engineering, Center for Bioengineering, University of California, Santa Barbara, CA 93106
| | - Blaine J. Zern
- Department of Pharmacology and Center for Translational Targeted Therapeutics and Nanomedicine, Perelman School of Medicine, University of Pennsylvania
| | - Daniel Pan
- Department of Pharmacology and Center for Translational Targeted Therapeutics and Nanomedicine, Perelman School of Medicine, University of Pennsylvania
| | - Michael Zakrewsky
- Department of Chemical Engineering, Center for Bioengineering, University of California, Santa Barbara, CA 93106
| | - Vladimir Muzykantov
- Department of Pharmacology and Center for Translational Targeted Therapeutics and Nanomedicine, Perelman School of Medicine, University of Pennsylvania
| | - Samir Mitragotri
- Department of Chemical Engineering, Center for Bioengineering, University of California, Santa Barbara, CA 93106
- To whom correspondence should be addressed: Prof. Samir Mitragotri, Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, Ph: 805-893-7532, Fax: 805-893-4731,
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422
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Biodistribution, pharmacokinetics, and blood compatibility of native and PEGylated tobacco mosaic virus nano-rods and -spheres in mice. Virology 2013; 449:163-73. [PMID: 24418549 DOI: 10.1016/j.virol.2013.10.035] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 09/18/2013] [Accepted: 10/26/2013] [Indexed: 01/11/2023]
Abstract
Understanding the pharmacokinetics, blood compatibility, biodistribution and clearance properties of nanoparticles is of great importance to their translation to clinical application. In this paper we report the biodistribution and pharmacokinetic properties of tobacco mosaic virus (TMV) in the forms of 300×18nm(2) rods and 54nm-sized spheres. The availability of rods and spheres made of the same protein provides a unique scaffold to study the effect of nanoparticle shape on in vivo fate. For enhanced biocompatibility, we also considered a PEGylated formulation. Overall, the versions of nanoparticles exhibited comparable in vivo profiles; a few differences were noted: data indicate that rods circulate longer than spheres, illustrating the effect that shape plays on circulation. Also, PEGylation increased circulation times. We found that macrophages in the liver and spleen cleared the TMV rods and spheres from circulation. In the spleen, the viral nanoparticles trafficked through the marginal zone before eventually co-localizing in B-cell follicles. TMV rods and spheres were cleared from the liver and spleen within days with no apparent changes in histology, it was noted that spheres are more rapidly cleared from tissues compared to rods. Further, blood biocompatibility was supported, as none of the formulations induced clotting or hemolysis. This work lays the foundation for further application and tailoring of TMV for biomedical applications.
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423
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Vllasaliu D, Fowler R, Stolnik S. PEGylated nanomedicines: recent progress and remaining concerns. Expert Opin Drug Deliv 2013; 11:139-54. [DOI: 10.1517/17425247.2014.866651] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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424
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Zeng X, Yu S, Lai M, Sun R, Wong CP. Tuning the mechanical properties of glass fiber-reinforced bismaleimide-triazine resin composites by constructing a flexible bridge at the interface. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2013; 14:065001. [PMID: 27877621 PMCID: PMC5090302 DOI: 10.1088/1468-6996/14/6/065001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 10/10/2013] [Indexed: 06/01/2023]
Abstract
We demonstrate a new method that can simultaneously improve the strength and toughness of the glass fiber-reinforced bismaleimide-triazine (BT) resin composites by using polyethylene glycol (PEG) to construct a flexible bridge at the interface. The mechanical properties, including the elongation, ultimate tensile stress, Young's modulus, toughness and dynamical mechanical properties were studied as a function of the length of PEG molecular chain. It was found that the PEG molecule acts as a bridge to link BT resin and glass fiber through covalent and non-covalent bondings, respectively, resulting in improved interfacial bonding. The incorporation of PEG produces an increase in elongation, ultimate tensile stress and toughness. The Young's modulus and Tg were slightly reduced when the length of the PEG molecular chain was high. The elongation of the PEG-modified glass fiber-reinforced composites containing 5 wt% PEG-8000 increased by 67.1%, the ultimate tensile stress by 17.9% and the toughness by 78.2% compared to the unmodified one. This approach provides an efficient way to develop substrate material with improved strength and toughness for integrated circuit packaging applications.
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Affiliation(s)
- Xiaoliang Zeng
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, People’s Republic of China
| | - Shuhui Yu
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, People’s Republic of China
| | - Maobai Lai
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, People’s Republic of China
| | - Rong Sun
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen, People’s Republic of China
| | - Ching-Ping Wong
- Department of Electronics Engineering, Chinese University of Hong Kong, Hong Kong, People’s Republic of China
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425
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Noble GT, Stefanick JF, Ashley JD, Kiziltepe T, Bilgicer B. Ligand-targeted liposome design: challenges and fundamental considerations. Trends Biotechnol 2013; 32:32-45. [PMID: 24210498 DOI: 10.1016/j.tibtech.2013.09.007] [Citation(s) in RCA: 326] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 09/26/2013] [Accepted: 09/27/2013] [Indexed: 12/18/2022]
Abstract
Nanomedicine, particularly liposomal drug delivery, has expanded considerably over the past few decades, and several liposomal drugs are already providing improved clinical outcomes. Liposomes have now progressed beyond simple, inert drug carriers and can be designed to be highly responsive in vivo, with active targeting, increased stealth, and controlled drug-release properties. Ligand-targeted liposomes (LTLs) have the potential to revolutionize the treatment of cancer. However, these highly engineered liposomes generate new problems, such as accelerated clearance from circulation, compromised targeting owing to non-specific serum protein binding, and hindered tumor penetration. This article highlights recent challenges facing LTL strategies and describes the advanced design elements used to circumvent them.
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Affiliation(s)
- Gavin T Noble
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jared F Stefanick
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Jonathan D Ashley
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Tanyel Kiziltepe
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA; Mike and Josie Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556, USA; Advanced Diagnostics and Therapeutics, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Basar Bilgicer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA; Mike and Josie Harper Cancer Research Institute, University of Notre Dame, Notre Dame, IN 46556, USA; Advanced Diagnostics and Therapeutics, University of Notre Dame, Notre Dame, IN 46556, USA; Center for Rare & Neglected Diseases, University of Notre Dame, Notre Dame, IN 46556, USA; Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA.
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426
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Abstract
There are many obstacles to effective cancer chemotherapy, including drug penetration and accumulation in tumors and drug systemic toxicity. The penetration of therapies into tumors is limited by the dense tumor matrix and by compression of the tumor vasculature. We have developed spiropyran-based nanoparticles that shrink from 103 to 49 nm upon irradiation at 365 nm. That shrinkage enhanced tissue penetration and drug release. Irradiation of s.c. HT-1080 tumors in nude mice administered i.v. docetaxel-containing nanoparticles was more effective treatment than free docetaxel or encapsulated docetaxel without irradiation. Irradiation at the tumor site also resulted in less systemic toxicity than if the nanoparticles were irradiated before injection, presumably because of less systemically distributed free drug. The enhanced efficacy of nanoparticles in irradiated tumors may have been related to the observed enhanced tumor penetration by nanoparticles and decompression of tumor blood vessels, which may also increase nanoparticle delivery into tumors.
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427
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Ganesh S, Iyer AK, Gattacceca F, Morrissey DV, Amiji MM. In vivo biodistribution of siRNA and cisplatin administered using CD44-targeted hyaluronic acid nanoparticles. J Control Release 2013; 172:699-706. [PMID: 24161254 DOI: 10.1016/j.jconrel.2013.10.016] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/11/2013] [Accepted: 10/12/2013] [Indexed: 10/26/2022]
Abstract
Multidrug resistance (MDR) is a significant problem in the clinical management of several cancers. Overcoming MDR generally involves multi-modal therapeutic approaches that integrate enhancement of delivery efficiency using targeted nano-platforms as well as strategies that can sensitize cancer cells to drug treatments. We recently demonstrated that tandem delivery of siRNAs that downregulate anti-apoptotic genes overexpressed in cisplatin resistant tumors followed by therapeutic challenge using cisplatin loaded CD44 targeted hyaluronic acid (HA) nanoparticle (NP) induced synergistic antitumor response CD44 expressing tumors that are resistant to cisplatin. In the current study, a near infrared (NIR) dye-loaded HA NP was employed to image the whole body localization of NPs after intravenous (i.v.) injection into live mice bearing human lung tumors that were sensitive and resistant to cisplatin. In addition, we quantified the siRNA duplexes and cisplatin dose distribution in various tissues and organs using an ultra-sensitive quantitative PCR method and inductively coupled plasma-mass spectrometry (ICP-MS), respectively, after i.v. injection of the payload loaded HA NPs in tumor bearing mice. Our findings demonstrate that the distribution pattern of the siRNA and cisplatin using specifically engineered CD44 targeting HA NPs correlated well with the tumor targeting capability as well as the activity and efficacy obtained with combination treatments.
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Affiliation(s)
- Shanthi Ganesh
- Department of Pharmaceutical Sciences, School of Pharmacy, Bouvé College of Health Sciences, Northeastern University, Boston 02115, USA; Novartis Institutes for Biomedical Research Inc., Cambridge 02139, USA
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428
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Kim D, Kim SK, Valencia CA, Liu R. Tribody: robust self-assembled trimeric targeting ligands with high stability and significantly improved target-binding strength. Biochemistry 2013; 52:7283-94. [PMID: 24050811 DOI: 10.1021/bi400716w] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The C-terminal coiled-coil region of mouse and human cartilage matrix protein (CMP) self-assembles into a parallel trimeric complex. Here, we report a general strategy for the development of highly stable trimeric targeting ligands (tribodies), against epidermal growth factor receptor (EGFR) and prostate-specific membrane antigen (PSMA) as examples, by fusing a specific target-binding moiety with a trimerization domain derived from CMP. The resulting fusion proteins can efficiently self-assemble into a well-defined parallel homotrimer with high stability. Surface plasmon resonance (SPR) analysis of the trimeric targeting ligands demonstrated significantly enhanced target-binding strength compared with the corresponding monomers. Cellular-binding studies confirmed that the trimeric targeting ligands have superior binding strength toward their respective receptors. Significantly, the EGFR-binding tribody was considerably accumulated in the tumor of mice bearing xenografted EGFR-positive tumors, indicating its effective cancer-targeting feature under in vivo conditions. Our results demonstrate that CMP-based self-assembly of tribodies can be a general strategy for the facile and robust generation of trivalent targeting ligands for a wide variety of in vitro and in vivo applications.
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Affiliation(s)
- Dongwook Kim
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina 27599-7568, United States
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429
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Alayoubi A, Alqahtani S, Kaddoumi A, Nazzal S. Effect of PEG surface conformation on anticancer activity and blood circulation of nanoemulsions loaded with tocotrienol-rich fraction of palm oil. AAPS J 2013; 15:1168-79. [PMID: 23990503 PMCID: PMC3787212 DOI: 10.1208/s12248-013-9525-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/07/2013] [Indexed: 12/15/2022] Open
Abstract
Tocotrienol-rich fraction of palm oil, which contains the isomers of vitamin E, was shown to possess potent anticancer activity against mammary adenocarcinoma cell lines. Its clinical use, however, is limited by poor oral bioavailability and short half-life. Previously, we developed tocotrienol-rich lipid nanoemulsions for intravenous administration. The objective of this study was to investigate the effect of surface grafted polyethylene glycol (PEG) on the properties of the nanoemulsions. PEGylation was achieved by the addition of equimolar PEG groups using poloxamer or 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[amino(polyethylene glycol)2000] (PEG2000-DSPE). The effect of PEG surface topography on the antiproliferative activity of nanoemulsions against mammary adenocarcinoma cells, their susceptibility to protein adsorption, and its effect on blood hemolysis and circulation time was investigated. Nanoemulsions PEGylated with poloxamer or PEG2000-DSPE were stable under physical stress. Poloxamer nanoemulsion, however, displayed higher uptake and potency against MCF-7 tumor cells in 2D and 3D culture and increased hemolytic effect and susceptibility to IgG adsorption, which was reflected in its rapid clearance and short circulation half-life (1.7 h). Conversely, PEGylation with PEG2000-DSPE led to a 7-fold increase in mean residence time (12.3 h) after IV injection in rats. Reduced activity in vitro and improved circulation time suggested strong shielding of plasma proteins from the droplets. Differences between the nanoemulsions were attributed to polymer imbibitions and the differences in PEG conformation and density on the surface of the droplets.
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Affiliation(s)
- Alaadin Alayoubi
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Dr., Monroe, Louisiana 71201 USA
| | - Saeed Alqahtani
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Dr., Monroe, Louisiana 71201 USA
| | - Amal Kaddoumi
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Dr., Monroe, Louisiana 71201 USA
| | - Sami Nazzal
- Department of Basic Pharmaceutical Sciences, College of Pharmacy, University of Louisiana at Monroe, 1800 Bienville Dr., Monroe, Louisiana 71201 USA
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430
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Park YM, Lee SJ, Kim YS, Lee MH, Cha GS, Jung ID, Kang TH, Han HD. Nanoparticle-based vaccine delivery for cancer immunotherapy. Immune Netw 2013; 13:177-83. [PMID: 24198742 PMCID: PMC3817298 DOI: 10.4110/in.2013.13.5.177] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 09/09/2013] [Accepted: 09/13/2013] [Indexed: 12/16/2022] Open
Abstract
Development of nano-sized carriers including nanoparticles, nanoemulsions or liposomes holds great potential for advanced delivery systems for cancer immunotherapy, as such nanostructures can be used to more effectively manipulate or deliver immunologically active components to specific target sites. Successful development of nanotechnology based platform in the field of immunotherapy will allow the application of vaccines, adjuvants and immunomodulatory drugs that improve clinical outcomes for immunological diseases. Here, we review current nanoparticle-based platforms in the efficacious delivery of vaccines in cancer immunotherapy.
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Affiliation(s)
- Yeong-Min Park
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Seung Jun Lee
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Young Seob Kim
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Moon Hee Lee
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Gil Sun Cha
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - In Duk Jung
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Tae Heung Kang
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
| | - Hee Dong Han
- Department of Immunology, School of Medicine, Konkuk University, Chungju 380-701, Korea
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431
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Deng J, Sun M, Zhu J, Gao C. Molecular interactions of different size AuNP-COOH nanoparticles with human fibrinogen. NANOSCALE 2013; 5:8130-7. [PMID: 23884371 DOI: 10.1039/c3nr02327c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Protein adsorption influences greatly the performance of materials used in biotechnology and biomedicine. The binding of fibrinogen (Fg) to nanoparticles (NPs) can result in protein unfolding and exposure of cryptic epitopes that subsequently interact with cell surface receptors. The response and its degree are dependent on the size, charge, and concentration of the NPs. In this study the binding kinetics of human Fg to negatively charged 11-mercaptoundecanoic acid-functionalized gold nanoparticles (AuNPs-COOH) ranging from 5.6 to 64.5 nm were examined. The larger NPs bound Fg with a larger number of proteins per square unit and a higher dissociation rate (Kd'), but with decreased affinity. By contrast, the 5.6 nm AuNPs-COOH behaved in a cooperative manner for Fg adsorption. In the presence of excess Fg, only the 64.5 nm AuNPs-COOH showed severe aggregation, whose degree was alleviated in a dilute Fg solution. The Fg is adsorbed through a side-on configuration and both side-on and end-on configurations on the smaller (5.6 and 14.2 nm) and 31.5 nm AuNPs-COOH, respectively. It also retains the native conformation. By contrast, on the 64.5 nm AuNPs-COOH the Fg adopts the end-on configuration and loses most of the secondary structure.
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Affiliation(s)
- Jun Deng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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432
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Xu J, Luft JC, Yi X, Tian S, Owens G, Wang J, Johnson A, Berglund P, Smith J, Napier ME, DeSimone JM. RNA replicon delivery via lipid-complexed PRINT protein particles. Mol Pharm 2013; 10:3366-74. [PMID: 23924216 PMCID: PMC3948333 DOI: 10.1021/mp400190z] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Herein we report the development of a nonviral lipid-complexed PRINT (particle replication in nonwetting templates) protein particle system (LPP particle) for RNA replicon delivery with a view toward RNA replicon-based vaccination. Cylindrical bovine serum albumin (BSA) particles (diameter (d) 1 μm, height (h) 1 μm) loaded with RNA replicon and stabilized with a fully reversible disulfide cross-linker were fabricated using PRINT technology. Highly efficient delivery of the particles to Vero cells was achieved by complexing particles with a mixture of 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) and 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE) lipids. Our data suggest that (1) this lipid-complexed protein particle is a promising system for delivery of RNA replicon-based vaccines and (2) it is necessary to use a degradable cross-linker for successful delivery of RNA replicon via protein-based particles.
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Affiliation(s)
- Jing Xu
- Carolina Center of Cancer Nanotechnology Excellence, University of North Carolina, Chapel Hill, NC 27599
| | - J. Christopher Luft
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599
- UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599
- Carolina Center of Cancer Nanotechnology Excellence, University of North Carolina, Chapel Hill, NC 27599
- Institute for Advanced Materials, University of North Carolina, Chapel Hill, NC 27599
- Institute for Nanomedicine, University of North Carolina, Chapel Hill, NC 27599
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
| | - Xianwen Yi
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
| | - Shaomin Tian
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599
- Carolina Center of Cancer Nanotechnology Excellence, University of North Carolina, Chapel Hill, NC 27599
- Institute for Advanced Materials, University of North Carolina, Chapel Hill, NC 27599
- Institute for Nanomedicine, University of North Carolina, Chapel Hill, NC 27599
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
| | | | - Jin Wang
- Carolina Center of Cancer Nanotechnology Excellence, University of North Carolina, Chapel Hill, NC 27599
| | - Ashley Johnson
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695
| | | | | | - Mary E. Napier
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599
- Carolina Center of Cancer Nanotechnology Excellence, University of North Carolina, Chapel Hill, NC 27599
- Institute for Advanced Materials, University of North Carolina, Chapel Hill, NC 27599
- Institute for Nanomedicine, University of North Carolina, Chapel Hill, NC 27599
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599
| | - Joseph M. DeSimone
- Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599
- Department of Pharmacology, University of North Carolina, Chapel Hill, NC 27599
- Carolina Center of Cancer Nanotechnology Excellence, University of North Carolina, Chapel Hill, NC 27599
- Institute for Advanced Materials, University of North Carolina, Chapel Hill, NC 27599
- Institute for Nanomedicine, University of North Carolina, Chapel Hill, NC 27599
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695
- Sloan-Kettering Institute for Cancer Research, Memorial Sloan-Kettering Cancer Center, New York, NY 10021
- Joint Department of Biomedical Engineering, University of North Carolina, Chapel Hill, NC 27599, and North Carolina State University, Raleigh, NC 27695
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433
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Ahmed E, Morton SW, Hammond PT, Swager TM. Fluorescent multiblock π-conjugated polymer nanoparticles for in vivo tumor targeting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2013; 25:4504-10. [PMID: 23794490 PMCID: PMC4001254 DOI: 10.1002/adma.201301656] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2013] [Revised: 05/16/2013] [Indexed: 05/19/2023]
Abstract
Highly fluorescent multiblock conjugated polymer nanoparticles with folic acid surface ligands are highly effective for bioimaging and in vivo tumor targeting. The targeted nanoparticles were preferentially localized in tumor cells in vivo, thereby illustrating their potential for diagnostic and therapeutic applications.
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Affiliation(s)
- Eilaf Ahmed
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
| | - Stephen W. Morton
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
| | - Paula T. Hammond
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
| | - Timothy M. Swager
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139 (USA)
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434
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Saptarshi SR, Duschl A, Lopata AL. Interaction of nanoparticles with proteins: relation to bio-reactivity of the nanoparticle. J Nanobiotechnology 2013; 11:26. [PMID: 23870291 PMCID: PMC3720198 DOI: 10.1186/1477-3155-11-26] [Citation(s) in RCA: 591] [Impact Index Per Article: 53.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 07/12/2013] [Indexed: 01/01/2023] Open
Abstract
Interaction of nanoparticles with proteins is the basis of nanoparticle bio-reactivity. This interaction gives rise to the formation of a dynamic nanoparticle-protein corona. The protein corona may influence cellular uptake, inflammation, accumulation, degradation and clearance of the nanoparticles. Furthermore, the nanoparticle surface can induce conformational changes in adsorbed protein molecules which may affect the overall bio-reactivity of the nanoparticle. In depth understanding of such interactions can be directed towards generating bio-compatible nanomaterials with controlled surface characteristics in a biological environment. The main aim of this review is to summarise current knowledge on factors that influence nanoparticle-protein interactions and their implications on cellular uptake.
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Affiliation(s)
- Shruti R Saptarshi
- Centre for Biodiscovery and Molecular Development of Therapeutics, School of Pharmacy and Molecular Science, James Cook University, Townsville, Queensland, Australia
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435
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Jones SW, Roberts RA, Robbins GR, Perry JL, Kai MP, Chen K, Bo T, Napier ME, Ting JPY, Desimone JM, Bear JE. Nanoparticle clearance is governed by Th1/Th2 immunity and strain background. J Clin Invest 2013; 123:3061-73. [PMID: 23778144 DOI: 10.1172/jci66895] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 04/18/2013] [Indexed: 12/31/2022] Open
Abstract
Extended circulation of nanoparticles in blood is essential for most clinical applications. Nanoparticles are rapidly cleared by cells of the mononuclear phagocyte system (MPS). Approaches such as grafting polyethylene glycol onto particles (PEGylation) extend circulation times; however, these particles are still cleared, and the processes involved in this clearance remain poorly understood. Here, we present an intravital microscopy-based assay for the quantification of nanoparticle clearance, allowing us to determine the effect of mouse strain and immune system function on particle clearance. We demonstrate that mouse strains that are prone to Th1 immune responses clear nanoparticles at a slower rate than Th2-prone mice. Using depletion strategies, we show that both granulocytes and macrophages participate in the enhanced clearance observed in Th2-prone mice. Macrophages isolated from Th1 strains took up fewer particles in vitro than macrophages from Th2 strains. Treating macrophages from Th1 strains with cytokines to differentiate them into M2 macrophages increased the amount of particle uptake. Conversely, treating macrophages from Th2 strains with cytokines to differentiate them into M1 macrophages decreased their particle uptake. Moreover, these results were confirmed in human monocyte-derived macrophages, suggesting that global immune regulation has a significant impact on nanoparticle clearance in humans.
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Affiliation(s)
- Stephen W Jones
- Department of Cell Biology and Physiology, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599, USA
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436
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Joshi PP, Yoon SJ, Hardin WG, Emelianov S, Sokolov KV. Conjugation of antibodies to gold nanorods through Fc portion: synthesis and molecular specific imaging. Bioconjug Chem 2013; 24:878-88. [PMID: 23631707 DOI: 10.1021/bc3004815] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Anisotropic gold nanorods provide a convenient combination of properties, such as tunability of plasmon resonances and strong extinction cross sections in the near-infrared to red spectral region. These properties have created significant interest in the development of antibody conjugation methods for synthesis of targeted nanorods for a number of biomedical applications, including molecular specific imaging and therapy. Previously published conjugation approaches have achieved molecular specificity. However, the current conjugation methods have several downsides including low stability and potential cytotoxicity of bioconjugates that are produced by electrostatic interactions, as well as lack of control over antibody orientation during covalent conjugation. Here we addressed these shortcomings by introducing directional antibody conjugation to the gold nanorod surface. The directional conjugation is achieved through the carbohydrate moiety, which is located on one of the heavy chains of the Fc portion of most antibodies. The carbohydrate is oxidized under mild conditions to a hydrazide reactive aldehyde group. Then, a heterofunctional linker with hydrazide and dithiol groups is used to attach antibodies to gold nanorods. The directional conjugation approach was characterized using electron microscopy, zeta potential, and extinction spectra. We also determined spectral changes associated with nanorod aggregation; these spectral changes can be used as a convenient quality control of nanorod bioconjugates. Molecular specificity of the synthesized antibody targeted nanorods was demonstrated using hyperspectral, optical and photoacoustic imaging of cancer cell culture models. Additionally, we observed characteristic changes in optical spectra of molecular specific nanorods after their interactions with cancer cells; the observed spectral signatures can be explored for sensitive cancer detection.
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Affiliation(s)
- Pratixa P Joshi
- Department of Biomedical Engineering and §Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712, United States
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437
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Dunn SS, Byrne JD, Perry JL, Chen K, DeSimone JM. Generating Better Medicines for Cancer. ACS Macro Lett 2013; 2:393-397. [PMID: 23772351 DOI: 10.1021/mz400116a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The complexity of tumor biology warrants tailored drug delivery for overcoming the major challenges faced by cancer therapies. The versatility of the PRINT® (Particle Replication In Non-wetting Templates) process has enabled the preparation of shape- and size-specific particles with a wide range of chemical compositions and therapeutic cargos. Different particle matrices and drugs may be combined in a plug-and-play approach, such that physico-chemical characteristics of delivery vectors may be optimized for biocompatibility, cargo stability and release, circulation half-life, and efficacy. Thus, the engineering of particles for cancer therapy with specific biophysical behaviors and cellular responses has been demonstrated via the PRINT process.
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Affiliation(s)
- Stuart S. Dunn
- Wyss Institute for
Biologically Inspired Engineering, School of Engineering
and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | | | | | | | - Joseph M. DeSimone
- Department of Chemical
and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United
States
- Sloan-Kettering
Institute for Cancer Research, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New
York, New York 10065, United States
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438
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Sengupta S, Kulkarni A. Design principles for clinical efficacy of cancer nanomedicine: a look into the basics. ACS NANO 2013; 7:2878-82. [PMID: 23607425 PMCID: PMC3876731 DOI: 10.1021/nn4015399] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
With recent advances in cancer nanomedicine, there is an increasing expectation for clinical translation. However, what are the parameters of a nanomedicine that will define clinical success, which will be measured by increased efficacy and not just ease of delivery or reduction in toxicity? In this Perspective, we build on a fundamental study by Stefanick et al. on the significance of the design principles in the engineering of a nanomedicine, such as peptide-PEG-linker length and ligand density in cellular uptake of liposomal nanoparticles. We address additional design parameters that can potentially facilitate clinical translation as well as how emerging insights into tumor biology will inspire next-generation cancer nanomedicines.
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Affiliation(s)
- Shiladitya Sengupta
- Laboratory of Nanomedicine, Division of Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard-MIT Division of Health Science Technology, Harvard Medical School, Dana Farber Cancer Center, 65 Landsdowne Street, Room 317, Boston, Massachusetts 02139, United States.
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439
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Xu J, Gattacceca F, Amiji M. Biodistribution and pharmacokinetics of EGFR-targeted thiolated gelatin nanoparticles following systemic administration in pancreatic tumor-bearing mice. Mol Pharm 2013; 10:2031-44. [PMID: 23544877 DOI: 10.1021/mp400054e] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The objective of this study was to evaluate qualitative and quantitative biodistribution of epidermal growth factor receptor (EGFR)-targeted thiolated type B gelatin nanoparticles in vivo in subcutaneous human pancreatic adenocarcinoma (Panc-1) bearing female SCID Beige mice. EGFR-targeted nanoparticles showed preferential and sustained accumulation in the tumor mass, especially at early time points. Higher blood concentrations and higher tumor accumulations were observed with PEG-modified and EGFR-targeted nanoparticles during the study (AUClast: 17.38 and 19.56%ID/mL·h in blood, 187 and 322%ID/g·h in tumor for PEG-modified and EGFR-targeted nanoparticles, respectively), as compared to control, unmodified particles (AUClast: 10.71%ID/mL·h in blood and 138%ID/g·h in tumor). EGFR-targeted nanoparticles displayed almost twice tumor targeting efficiency than either PEG-modified or the unmodified nanoparticles, highlighting the efficacy of the active targeting strategy. In conclusion, this study shows that EGFR-targeted and PEG-modified nanoparticles were suitable vehicles for specific systemic delivery in subcutaneous Panc-1 tumor xenograft models.
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Affiliation(s)
- Jing Xu
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
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440
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Abstract
This review surveys selected methods of manufacture and applications of microdevices-miniaturized functional devices capable of handling cell and tissue cultures or producing particles-and discusses their potential relevance to nanomedicine. Many characteristics of microdevices such as miniaturization, increased throughput, and the ability to mimic organ-specific microenvironments are promising for the rapid, low-cost evaluation of the efficacy and toxicity of nanomaterials. Their potential to accurately reproduce the physiological environments that occur in vivo could reduce dependence on animal models in pharmacological testing. Technologies in microfabrications and microfluidics are widely applicable for nanomaterial synthesis and for the development of diagnostic devices. Although the use of microdevices in nanomedicine is still in its infancy, these technologies show promise for enhancing fundamental and applied research in nanomedicine.
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Affiliation(s)
- Michinao Hashimoto
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA 02115, USA
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441
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Cheetham AG, Zhang P, Lin YA, Lock LL, Cui H. Supramolecular nanostructures formed by anticancer drug assembly. J Am Chem Soc 2013; 135:2907-10. [PMID: 23379791 DOI: 10.1021/ja3115983] [Citation(s) in RCA: 416] [Impact Index Per Article: 37.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
We report here a supramolecular strategy to directly assemble the small molecular hydrophobic anticancer drug camptothecin (CPT) into discrete, stable, well-defined nanostructures with a high and quantitative drug loading. Depending on the number of CPTs in the molecular design, the resulting nanostructures can be either nanofibers or nanotubes, and have a fixed CPT loading content ranging from 23% to 38%. We found that formation of nanostructures provides protection for both the CPT drug and the biodegradable linker from the external environment and thus offers a mechanism for controlled release of CPT. Under tumor-relevant conditions, these drug nanostructures can release the bioactive form of CPT and show in vitro efficacy against a number of cancer cell lines. This strategy can be extended to construct nanostructures of other types of anticancer drugs and thus presents new opportunities for the development of self-delivering drugs for cancer therapeutics.
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Affiliation(s)
- Andrew G Cheetham
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
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442
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Chunyan W, Valiyaveettil S. Correlation of biocapping agents with cytotoxic effects of silver nanoparticles on human tumor cells. RSC Adv 2013. [DOI: 10.1039/c3ra41346b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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