201
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Gonzalez-Moragas L, Roig A, Laromaine A. C. elegans as a tool for in vivo nanoparticle assessment. Adv Colloid Interface Sci 2015; 219:10-26. [PMID: 25772622 DOI: 10.1016/j.cis.2015.02.001] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 01/26/2015] [Accepted: 02/06/2015] [Indexed: 11/16/2022]
Abstract
Characterization of the in vivo behavior of nanomaterials aims to optimize their design, to determine their biological effects, and to validate their application. The characteristics of the model organism Caenorhabditis elegans (C. elegans) advocate this 1mm long nematode as an ideal living system for the primary screening of engineered nanoparticles in a standard synthetic laboratory. This review describes some practicalities and advantages of working with C. elegans that will be of interest for chemists and materials scientists who would like to enter the "worm" community, anticipates some drawbacks, and offers relevant examples of nanoparticle assessment by using C. elegans.
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Affiliation(s)
- L Gonzalez-Moragas
- Institut de Ciència de Materials de Barcelona, Campus UAB, 08193 Bellaterra, Spain
| | - A Roig
- Institut de Ciència de Materials de Barcelona, Campus UAB, 08193 Bellaterra, Spain
| | - A Laromaine
- Institut de Ciència de Materials de Barcelona, Campus UAB, 08193 Bellaterra, Spain.
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202
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Optical signatures of silicon-vacancy spins in diamond. Nat Commun 2015; 5:3328. [PMID: 24534908 DOI: 10.1038/ncomms4328] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Accepted: 01/27/2014] [Indexed: 12/25/2022] Open
Abstract
Colour centres in diamond have emerged as versatile tools for solid-state quantum technologies ranging from quantum information to metrology, where the nitrogen-vacancy centre is the most studied to date. Recently, this toolbox has expanded to include novel colour centres to realize more efficient spin-photon quantum interfaces. Of these, the silicon-vacancy centre stands out with highly desirable photonic properties. The challenge for utilizing this centre is to realize the hitherto elusive optical access to its electronic spin. Here we report spin-tagged resonance fluorescence from the negatively charged silicon-vacancy centre. Our measurements reveal a spin-state purity approaching unity in the excited state, highlighting the potential of the centre as an efficient spin-photon quantum interface.
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203
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Novel developments in the prevention, diagnosis, and treatment of periprosthetic joint infections. J Am Acad Orthop Surg 2015; 23 Suppl:S32-43. [PMID: 25808968 DOI: 10.5435/jaaos-d-14-00455] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Periprosthetic joint infection (PJI) is one of the most challenging complications compromising the outcome of an otherwise successful operation. Considerable efforts have been invested in the recent years to address paradigm shifts in our understanding of the complex microbiological phenomena that contribute to the pathophysiology of PJI, such as microbial adherence, biofilm formation, and resistance to antibiotics. This article is an introduction to some of the recent advancements in the prevention, diagnosis, and treatment of PJI. It describes how industry, academic researchers, and government are increasing collaboration to address PJI through development of novel technologies, therapeutic strategies, and regulatory science that specifically target the unique biofilm-associated aspects of its pathogenesis.
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204
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Wang H, Lee DK, Chen KY, Chen JY, Zhang K, Silva A, Ho CM, Ho D. Mechanism-independent optimization of combinatorial nanodiamond and unmodified drug delivery using a phenotypically driven platform technology. ACS NANO 2015; 9:3332-3344. [PMID: 25689511 DOI: 10.1021/acsnano.5b00638] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Combination chemotherapy can mediate drug synergy to improve treatment efficacy against a broad spectrum of cancers. However, conventional multidrug regimens are often additively determined, which have long been believed to enable good cancer-killing efficiency but are insufficient to address the nonlinearity in dosing. Despite improved clinical outcomes by combination treatment, multi-objective combination optimization, which takes into account tumor heterogeneity and balance of efficacy and toxicity, remains challenging given the sheer magnitude of the combinatorial dosing space. To enhance the properties of the therapeutic agents, the field of nanomedicine has realized novel drug delivery platforms that can enhance therapeutic efficacy and safety. However, optimal combination design that incorporates nanomedicine agents still faces the same hurdles as unmodified drug administration. The work reported here applied a powerful phenotypically driven platform, termed feedback system control (FSC), that systematically and rapidly converges upon a combination consisting of three nanodiamond-modified drugs and one unmodified drug that is simultaneously optimized for efficacy against multiple breast cancer cell lines and safety against multiple control cell lines. Specifically, the therapeutic window achieved from an optimally efficacious and safe nanomedicine combination was markedly higher compared to that of an optimized unmodified drug combination and nanodiamond monotherapy or unmodified drug administration. The phenotypically driven foundation of FSC implementation does not require any cellular signaling pathway data and innately accounts for population heterogeneity and nonlinear biological processes. Therefore, FSC is a broadly applicable platform for both nanotechnology-modified and unmodified therapeutic optimizations that represent a promising path toward phenotypic personalized medicine.
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Affiliation(s)
- Hann Wang
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Dong-Keun Lee
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Kai-Yu Chen
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Jing-Yao Chen
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Kangyi Zhang
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Aleidy Silva
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Chih-Ming Ho
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
| | - Dean Ho
- †Department of Bioengineering, Henry Samueli School of Engineering and Applied Science, ‡Division of Oral Biology and Medicine, School of Dentistry, §The Jane and Jerry Weintraub Center for Reconstructive Biotechnology, ∥California NanoSystems Institute, ⊥Jonsson Comprehensive Cancer Center, #Department of Chemical and Biomolecular Engineering, and ¶Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, California 90095, United States
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205
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Sotoma S, Igarashi R, Iimura J, Kumiya Y, Tochio H, Harada Y, Shirakawa M. Suppression of Nonspecific Protein–Nanodiamond Adsorption Enabling Specific Targeting of Nanodiamonds to Biomolecules of Interest. CHEM LETT 2015. [DOI: 10.1246/cl.141036] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Shingo Sotoma
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University
| | - Ryuji Igarashi
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University
| | - Jun Iimura
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University
| | - Yuta Kumiya
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University
| | - Hidehito Tochio
- Department of Biophysics, Graduate School of Science, Kyoto University
| | - Yoshie Harada
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University
| | - Masahiro Shirakawa
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University
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206
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Schultz C, Powell K, Crossley A, Jurkschat K, Kille P, Morgan AJ, Read D, Tyne W, Lahive E, Svendsen C, Spurgeon DJ. Analytical approaches to support current understanding of exposure, uptake and distributions of engineered nanoparticles by aquatic and terrestrial organisms. ECOTOXICOLOGY (LONDON, ENGLAND) 2015; 24:239-261. [PMID: 25516483 DOI: 10.1007/s10646-014-1387-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/18/2014] [Indexed: 06/04/2023]
Abstract
Initiatives to support the sustainable development of the nanotechnology sector have led to rapid growth in research on the environmental fate, hazards and risk of engineered nanoparticles (ENP). As the field has matured over the last 10 years, a detailed picture of the best methods to track potential forms of exposure, their uptake routes and best methods to identify and track internal fate and distributions following assimilation into organisms has begun to emerge. Here we summarise the current state of the field, focussing particularly on metal and metal oxide ENPs. Studies to date have shown that ENPs undergo a range of physical and chemical transformations in the environment to the extent that exposures to pristine well dispersed materials will occur only rarely in nature. Methods to track assimilation and internal distributions must, therefore, be capable of detecting these modified forms. The uptake mechanisms involved in ENP assimilation may include a range of trans-cellular trafficking and distribution pathways, which can be followed by passage to intracellular compartments. To trace toxicokinetics and distributions, analytical and imaging approaches are available to determine rates, states and forms. When used hierarchically, these tools can map ENP distributions to specific target organs, cell types and organelles, such as endosomes, caveolae and lysosomes and assess speciation states. The first decade of ENP ecotoxicology research, thus, points to an emerging paradigm where exposure is to transformed materials transported into tissues and cells via passive and active pathways within which they can be assimilated and therein identified using a tiered analytical and imaging approach.
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Affiliation(s)
- Carolin Schultz
- Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford, Oxfordshire, OX10 8BB, UK
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207
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Rehor I, Lee KL, Chen K, Hajek M, Havlik J, Lokajova J, Masat M, Slegerova J, Shukla S, Heidari H, Bals S, Steinmetz NF, Cigler P. Plasmonic nanodiamonds: targeted core-shell type nanoparticles for cancer cell thermoablation. Adv Healthc Mater 2015; 4:460-8. [PMID: 25336437 PMCID: PMC4411186 DOI: 10.1002/adhm.201400421] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/03/2014] [Indexed: 01/17/2023]
Abstract
Targeted biocompatible nanostructures with controlled plasmonic and morphological parameters are promising materials for cancer treatment based on selective thermal ablation of cells. Here, core-shell plasmonic nanodiamonds consisting of a silica-encapsulated diamond nanocrystal coated in a gold shell are designed and synthesized. The architecture of particles is analyzed and confirmed in detail using electron tomography. The particles are biocompatibilized using a PEG polymer terminated with bioorthogonally reactive alkyne groups. Azide-modified transferrin is attached to these particles, and their high colloidal stability and successful targeting to cancer cells overexpressing the transferrin receptor are demonstrated. The particles are nontoxic to the cells and they are readily internalized upon binding to the transferrin receptor. The high plasmonic cross section of the particles in the near-infrared region is utilized to quantitatively ablate the cancer cells with a short, one-minute irradiation by a pulse 750-nm laser.
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Affiliation(s)
- Ivan Rehor
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
| | - Karin L. Lee
- Department of Biomedical Engineering, Case Western Reserve University, Schools of Medicine and Engineering, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Kevin Chen
- Department of Biomedical Engineering, Case Western Reserve University, Schools of Medicine and Engineering, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Miroslav Hajek
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
| | - Jan Havlik
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
- Faculty of Science, Charles University, Hlavova 2030, 128 40, Prague 2, Czech Republic
| | - Jana Lokajova
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
| | - Milan Masat
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
| | - Jitka Slegerova
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
- First Faculty of Medicine, Charles University, Katerinska 32, 121 08, Prague 2, Czech Republic
| | - Sourabh Shukla
- Department of Biomedical Engineering, Case Western Reserve University, Schools of Medicine and Engineering, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Hamed Heidari
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Sara Bals
- EMAT, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Nicole F. Steinmetz
- Department of Biomedical Engineering, Case Western Reserve University, Schools of Medicine and Engineering, 10900 Euclid Avenue, Cleveland, OH 44106, USA
- Department of Radiology, Department of Materials Science and Engineering, Department of Macromolecular Science and Engineering, Case Western Reserve University, Schools of Medicine and Engineering, 10900 Euclid Avenue, Cleveland, OH 44106, USA
| | - Petr Cigler
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nam. 2, 166 10 Prague 6, Czech Republic
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208
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Vaitkuviene A, Ratautaite V, Ramanaviciene A, Sanen K, Paesen R, Ameloot M, Petrakova V, McDonald M, Vahidpour F, Kaseta V, Ramanauskaite G, Biziuleviciene G, Nesladek M, Ramanavicius A. Impact of diamond nanoparticles on neural cells. Mol Cell Probes 2015; 29:25-30. [DOI: 10.1016/j.mcp.2014.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/21/2014] [Accepted: 10/22/2014] [Indexed: 11/25/2022]
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209
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Gong H, Anasori B, Dennison CR, Wang K, Kumbur EC, Strich R, Zhou JG. Fabrication, biodegradation behavior and cytotoxicity of Mg-nanodiamond composites for implant application. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:110. [PMID: 25665844 DOI: 10.1007/s10856-015-5441-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 11/23/2014] [Indexed: 06/04/2023]
Abstract
Mg-based biodegradable implants offer several advantages over their non-degradable or degradable polymeric counterparts used today. However, the low corrosion resistance of Mg in physiologic environment remained as concerns. In this research, nanodiamond (ND) was uniformly dispersed in Mg matrix to induce a protective layer on Mg surface during corrosion. Compared with pure Mg, fabricated Mg-ND nanocomposites had lower corrosion rates, higher corrosion potential, and higher corrosion resistance. Specifically, the corrosion rate of Mg was reduced by 4.5 times by adding 5 wt% of ND particles. Corrosion inhibition effect of ND was thus validated. The chemical interaction and physical adsorption of the ions from simulated body fluid on ND might be the main reason for enhanced corrosion resistance. In vitro biocompatibility test results indicated that Mg-ND nanocomposites were biocompatible since cells growing in contact with corrosion products of Mg-ND maintained high cell viability and healthy morphology. Therefore, Mg-ND nanocomposites with homogenous ND dispersion, enhanced corrosion resistance, and good biocompatibility might be an excellent candidate material for biodegradable implant application.
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Affiliation(s)
- Haibo Gong
- Department of Mechanical Engineering and Mechanics, Drexel University, 3141 Chestnut Street, Philadelphia, PA, 19104, USA
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210
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Montalti M, Cantelli A, Battistelli G. Nanodiamonds and silicon quantum dots: ultrastable and biocompatible luminescent nanoprobes for long-term bioimaging. Chem Soc Rev 2015; 44:4853-921. [DOI: 10.1039/c4cs00486h] [Citation(s) in RCA: 197] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ultra-stability and low-toxicity of silicon quantum dots and fluorescent nanodiamonds for long-termin vitroandin vivobioimaging are demonstrated.
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Affiliation(s)
- M. Montalti
- Department of Chemistry “G. Ciamician”
- University of Bologna
- Bologna
- Italy
| | - A. Cantelli
- Department of Chemistry “G. Ciamician”
- University of Bologna
- Bologna
- Italy
| | - G. Battistelli
- Department of Chemistry “G. Ciamician”
- University of Bologna
- Bologna
- Italy
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211
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Zhao Y, Liu Q, Shakoor S, Gong JR, Wang D. Transgenerational safety of nitrogen-doped graphene quantum dots and the underlying cellular mechanism in Caenorhabditis elegans. Toxicol Res (Camb) 2015. [DOI: 10.1039/c4tx00123k] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Nitrogen-doped graphene quantum dots (N-GQDs) are safe for environmental release.
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Affiliation(s)
- Yunli Zhao
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Qian Liu
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Shumaila Shakoor
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Jian Ru Gong
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
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212
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Dong Y, Cao R, Li Y, Wang Z, Li L, Tian L. Folate-conjugated nanodiamond for tumor-targeted drug delivery. RSC Adv 2015. [DOI: 10.1039/c5ra12383f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Relying on the role of folate and folate receptors, NPFD nanoparticles tend to selectively discriminate tumor cells from normal cells and enter the cells by clathrin-dependent and receptor-mediated endocytosis.
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Affiliation(s)
- Yu Dong
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Ruixia Cao
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Yingqi Li
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Zhiqin Wang
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
| | - Lin Li
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education
- Institute of Molecular Science
- Shanxi University
- Taiyuan 030006
- PR China
| | - Lu Tian
- Department of Chemistry
- College of Chemistry and Chemical Engineering
- Shanxi University
- Taiyuan 030006
- PR China
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213
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Serafim A, Cecoltan S, Lungu A, Vasile E, Iovu H, Stancu IC. Electrospun fish gelatin fibrous scaffolds with improved bio-interactions due to carboxylated nanodiamond loading. RSC Adv 2015. [DOI: 10.1039/c5ra14361f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work emphasizes the potential of COOH-functionalized nanodiamond (NDs) particles to improve bio-interactions when embedded into fish gelatin electrospun fibers.
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Affiliation(s)
- A. Serafim
- Advanced Polymer Materials Group
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
- Romania
| | - S. Cecoltan
- Advanced Polymer Materials Group
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
- Romania
| | - A. Lungu
- Advanced Polymer Materials Group
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
- Romania
| | - E. Vasile
- University Politehnica of Bucharest
- Faculty of Applied Chemistry and Materials Science
- Department of Science and Engineering of Oxide Materials and Nanomaterials
- 011061 Bucharest
- Romania
| | - H. Iovu
- Advanced Polymer Materials Group
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
- Romania
| | - I. C. Stancu
- Advanced Polymer Materials Group
- Faculty of Applied Chemistry and Materials Science
- University Politehnica of Bucharest
- 011061 Bucharest
- Romania
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214
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Yang J, Zhao Y, Wang Y, Wang H, Wang D. Toxicity evaluation and translocation of carboxyl functionalized graphene in Caenorhabditis elegans. Toxicol Res (Camb) 2015. [DOI: 10.1039/c5tx00137d] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
G-COOH in the range of mg L−1 did not cause toxic effects on both the exposed nematodes and their progeny.
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Affiliation(s)
- Junnian Yang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
- College of Life Sciences and Engineering
| | - Yunli Zhao
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Yanwen Wang
- Institute of Nanochemistry and Nanobiology
- Shanghai University
- Shanghai 200444
- China
| | - Haifang Wang
- Institute of Nanochemistry and Nanobiology
- Shanghai University
- Shanghai 200444
- China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
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215
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Abstract
The advent of cancer nanomedicine has forged new pathways for the enhanced imaging and treatment of a broad range of cancers using new classes of materials. Among the many platforms being developed for drug delivery and imaging, nanodiamonds (NDs) possess several important attributes that may be beneficial toward improving the efficacy and safety of cancer nanomedicine applications. These include the uniquely faceted surfaces of the ND particles that result in electrostatic properties that mediate enhanced interactions with water and loaded therapeutic compounds, scalable processing and synthesis parameters, versatility as platform carriers, and a spectrum of other characteristics. In addition, comprehensive in vitro and in vivo studies have demonstrated that NDs are well tolerated. This chapter will examine several recent studies that have harnessed the ND agent as a foundation for both systemic and localized drug delivery, as well as the marked improvements in magnetic resonance imaging efficiency that has been observed following ND-contrast agent conjugation. In addition, insight into the important steps toward bringing the ND translational pathway to the clinic will be discussed.
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Affiliation(s)
- Dean Ho
- Division of Oral Biology and Medicine, UCLA School of Dentistry, 10833 Le Conte Avenue, Room B3-068A, Los Angeles, CA, 90095, USA,
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216
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Zhao Y, Wang X, Wu Q, Li Y, Tang M, Wang D. Quantum dots exposure alters both development and function of D-type GABAergic motor neurons in nematode Caenorhabditis elegans. Toxicol Res (Camb) 2015. [DOI: 10.1039/c4tx00207e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Both translocation into targeted neurons and developmental and functional alterations in targeted neurons contribute to CdTe QDs neurotoxicity.
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Affiliation(s)
- Yunli Zhao
- Key Laboratory of Developmental Genes and Human Diseases in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Xiong Wang
- Key Laboratory of Developmental Genes and Human Diseases in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Qiuli Wu
- Key Laboratory of Developmental Genes and Human Diseases in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Yiping Li
- Key Laboratory of Developmental Genes and Human Diseases in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Meng Tang
- School of Public Health
- Southeast University
- Nanjing 210009
- China
| | - Dayong Wang
- Key Laboratory of Developmental Genes and Human Diseases in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
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217
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Keremidarska M, Hristova K, Hikov T, Radeva E, Mitev D, Tsvetanov I, Presker R, Drobne D, Drašler B, Novak S, Kononenko V, Eleršič K, Pramatarova L, Krasteva N. Development of Polymer/Nanodiamond Composite Coatings to Control Cell Adhesion, Growth, and Functions. ADVANCES IN PLANAR LIPID BILAYERS AND LIPOSOMES 2015. [DOI: 10.1016/bs.adplan.2015.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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218
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Shu C, Yu X, Wu Q, Zhuang Z, Zhang W, Wang D. Pretreatment with paeonol prevents the adverse effects and alters the translocation of multi-walled carbon nanotubes in nematode Caenorhabditis elegans. RSC Adv 2015. [DOI: 10.1039/c4ra14377a] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Pretreatment with paeonol alters toxicity and translocation of MWCNTs in nematodes.
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Affiliation(s)
- Chengjie Shu
- College of Life Sciences
- Nanjing Normal University
- Nanjing 210046
- China
- Nanjing Institute for Comprehensive Utilization of Wild Plants
| | - Xiaoming Yu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Qiuli Wu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
| | - Ziheng Zhuang
- School of Pharmaceutical Engineering and Life Sciences
- Changzhou University
- Changzhou 213164
- China
| | - Weiming Zhang
- College of Life Sciences
- Nanjing Normal University
- Nanjing 210046
- China
- Nanjing Institute for Comprehensive Utilization of Wild Plants
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education
- Medical School of Southeast University
- Nanjing 210009
- China
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219
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Vaijayanthimala V, Lee DK, Kim SV, Yen A, Tsai N, Ho D, Chang HC, Shenderova O. Nanodiamond-mediated drug delivery and imaging: challenges and opportunities. Expert Opin Drug Deliv 2014; 12:735-49. [DOI: 10.1517/17425247.2015.992412] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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220
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Abstract
The widespread entry of nanomaterials into manifold life fields posed serious concerns on environmental health and safety issues. Potential adverse effects of nanoparticles (NPs) are continuously faced using in vitro cell systems and by mean of cell and molecular biology tools, several mechanisms have been found beyond their toxicity. The evaluation of the in vivo possible consequences derived from exposure of living organisms to NPs is instead more complex but compulsory in view of their application for diagnosis or therapeutic purposes. Here the effects of NP-induced genetic alteration on the progeny of treated animals will be treated, considering selected species from invertebrate and vertebrates as examples of transgenerational transmission of NP toxicity. The effects on reproductive capability, fertility and embryogenesis observed in different animal species upon treatment with different materials will provide an overview of the current knowledge on the heritable feature of nanotoxicity.
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221
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Lai L, Barnard AS. Anisotropic adsorption and distribution of immobilized carboxyl on nanodiamond. NANOSCALE 2014; 6:14185-14189. [PMID: 25340582 DOI: 10.1039/c4nr05363j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Stable and predictable functionalization of nanodiamond with carboxyl is an important first step in loading these materials with therapeutic agents, and the conjugation with proteins, cytochrome, antigen, and DNA. By creating a map of the adsorption strength of COOH, OH, O and H with atomic level resolution across the entire surface of an experimentally realistic nanodiamond, we have shown how the distribution is highly anisotropic, and depends on surface reconstructions, facet orientation, and ultimately the shape. This provides useful insights into how the structure of nanodiamond impacts the formation of COOH surface monolayers, and suggests that efforts to separate nanodiamonds by shape would be highly beneficial in the development of drug delivery vehicles targeted to specific treatment regimes.
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Affiliation(s)
- Lin Lai
- CSIRO Virtual Nanoscience Laboratory, 343 Royal Parade, Parkville, Victoria 3052, Australia.
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222
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Moore L, Grobárová V, Shen H, Man HB, Míčová J, Ledvina M, Štursa J, Nesladek M, Fišerová A, Ho D. Comprehensive interrogation of the cellular response to fluorescent, detonation and functionalized nanodiamonds. NANOSCALE 2014; 6:11712-21. [PMID: 25037888 PMCID: PMC4399863 DOI: 10.1039/c4nr02570a] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Nanodiamonds (NDs) are versatile nanoparticles that are currently being investigated for a variety of applications in drug delivery, biomedical imaging and nanoscale sensing. Although initial studies indicate that these small gems are biocompatible, there is a great deal of variability in synthesis methods and surface functionalization that has yet to be evaluated. Here we present a comprehensive analysis of the cellular compatibility of an array of nanodiamond subtypes and surface functionalization strategies. These results demonstrate that NDs are well tolerated by multiple cell types at both functional and gene expression levels. In addition, ND-mediated delivery of daunorubicin is less toxic to multiple cell types than treatment with daunorubicin alone, thus demonstrating the ability of the ND agent to improve drug tolerance and decrease therapeutic toxicity. Overall, the results here indicate that ND biocompatibility serves as a promising foundation for continued preclinical investigation.
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Affiliation(s)
- Laura Moore
- Biomedical Engineering, Northwestern University, Evanston, Illinois, USA
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223
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Wu Q, Zhao Y, Li Y, Wang D. Molecular signals regulating translocation and toxicity of graphene oxide in the nematode Caenorhabditis elegans. NANOSCALE 2014; 6:11204-11212. [PMID: 25124895 DOI: 10.1039/c4nr02688h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Both in vitro and in vivo studies have demonstrated the toxic effects of graphene oxide (GO). However, the molecular basis for the translocation and toxicity of GO is still largely unclear. In the present study, we employed an in vivo Caenorhabditis elegans assay system to identify molecular signals involved in the control of the translocation and toxicity of GO. We identified 7 genes whose mutations altered both the translocation and toxicity of GO. Mutations of the hsp-16.48, gas-1, sod-2, sod-3, and aak-2 genes caused greater GO translocation into the body and toxic effects on both primary and secondary targeted organs compared with wild type; however, mutations of the isp-1 and clk-1 genes resulted in significantly decreased GO translocation into the body and toxicity on both primary and secondary targeted organs compared with wild-type. Moreover, mutations of the hsp-16.48, gas-1, sod-2, sod-3, and aak-2 genes caused increased intestinal permeability and prolonged mean defecation cycle length in GO-exposed nematodes, whereas mutations of the isp-1 and clk-1 genes resulted in decreased intestinal permeability in GO-exposed nematodes. Therefore, for the underlying mechanism, we hypothesize that both intestinal permeability and defecation behavior may have crucial roles in controlling the functions of the identified molecular signals. The molecular signals may further contribute to the control of transgenerational toxic effects of GO. Our results provide an important insight into understanding the molecular basis for the in vivo translocation and toxicity of GO.
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Affiliation(s)
- Qiuli Wu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China.
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224
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Zhao Y, Wang X, Wu Q, Li Y, Wang D. Translocation and neurotoxicity of CdTe quantum dots in RMEs motor neurons in nematode Caenorhabditis elegans. JOURNAL OF HAZARDOUS MATERIALS 2014; 283:480-489. [PMID: 25464286 DOI: 10.1016/j.jhazmat.2014.09.063] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 09/17/2014] [Accepted: 09/19/2014] [Indexed: 06/04/2023]
Abstract
We employed Caenorhabditis elegans assay system to investigate in vivo neurotoxicity of CdTe quantum dots (QDs) on RMEs motor neurons, which are involved in controlling foraging behavior, and the underlying mechanism of such neurotoxicity. After prolonged exposure to 0.1-1 μg/L of CdTe QDs, abnormal foraging behavior and deficits in development of RMEs motor neurons were observed. The observed neurotoxicity from CdTe QDs on RMEs motor neurons might be not due to released Cd(2+). Overexpression of genes encoding Mn-SODs or unc-30 gene controlling cell identity of RMEs neurons prevented neurotoxic effects of CdTe QDs on RMEs motor neurons, suggesting the crucial roles of oxidative stress and cell identity in regulating CdTe QDs neurotoxicity. In nematodes, CdTe QDs could be translocated through intestinal barrier and be deposited in RMEs motor neurons. In contrast, CdTe@ZnS QDs could not be translocated into RMEs motor neurons and therefore, could only moderately accumulated in intestinal cells, suggesting that ZnS coating might reduce neurotoxicity of CdTe QDs on RMEs motor neurons. Therefore, the combinational effects of oxidative stress, cell identity, and bioavailability may contribute greatly to the mechanism of CdTe QDs neurotoxicity on RMEs motor neurons. Our results provide insights into understanding the potential risks of CdTe QDs on the development and function of nervous systems in animals.
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Affiliation(s)
- Yunli Zhao
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China
| | - Xiong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China
| | - Qiuli Wu
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China
| | - Yiping Li
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China
| | - Dayong Wang
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China.
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225
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Transferrin-conjugated nanodiamond as an intracellular transporter of chemotherapeutic drug and targeting therapy for cancer cells. Ther Deliv 2014; 5:511-24. [PMID: 24998271 DOI: 10.4155/tde.14.17] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
AIM PEGylated fluorescent nanodiamond (FND) conjugated with Tf (FND-PEG-Tf) was investigated for targeted drug delivery. MATERIALS & METHODS Human hepatoma (HepG2) and normal (L-02) cell lines were used to investigate the difference in cellular uptake of FND-PEG-Tf and its loading drug system. Nanoparticle uptake was evaluated by flow cytometry and laser scanning confocal microscopy. RESULTS FND-PEG-Tf showed highly specific TfR-mediated uptake by HepG2 cells, relative to negative controls (L-02 cell), which was a strong correlation among TfR density on the cell surface. The mechanism of TfR-mediated uptake was attested by free Tf with Fe³⁺ as a competitive agent. The difference in cell viability between L-02 and HepG2 cells treated with doxorubicin hydrochloride (DOX) nanoparticles (FND-PEG-Tf-DOX) can be explained by FND-PEG-Tf, which can target drug delivery to cancer cells. CONCLUSION FND-PEG-Tf can potentially be utilized in targeted cancer cell imaging and effective drug delivery for cancer therapy.
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226
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Seeta Rama Raju G, Pavitra E, Nagaraju GP, Ramesh K, El-Rayes BF, Yu JS. Imaging and curcumin delivery in pancreatic cancer cell lines using PEGylated α-Gd2(MoO4)3 mesoporous particles. Dalton Trans 2014; 43:3330-8. [PMID: 24366050 DOI: 10.1039/c3dt52692e] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mesoporous particles are emerging as multifunctional biomaterials for imaging and drug delivery in several disease models, including cancer. We developed PEGylated α-Gd2(MoO4)3 marigold flower-like mesoporous particles for the purpose of drug delivery and, more specifically, evaluated their ability to deliver curcumin. The obtained mesoporous particles significantly conjugated the curcumin particles on their surfaces by inducing the formation of curcumin nanoparticles. In vitro studies of the PEGylated mesoporous particles filled with curcumin demonstrated that these particles could considerably facilitate the continuous and sustained release of curcumin into the cytoplasm and nucleus. As a result, the intracellular release of curcumin can inhibit proliferation in two human pancreatic cancer cell lines: MIA PaCa-2 and PANC-1. Additionally, the particles showed the increased inhibition of pIKKα, pIKKα/β and NF-κB-DNA binding activity as compared to pure curcumin. The curcumin conjugated mesoporous particles are concentrated in the cytoplasm and nucleus of the treated cancer cell lines. Consequently, these mesoporous particles are an effective method for drug delivery that can cross the biological barriers of the body targeting the cellular nucleoplasm.
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Affiliation(s)
- G Seeta Rama Raju
- Department of Electronics and Radio Engineering, Kyung Hee University, 1 Seocheon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Republic of Korea.
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227
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Basiruddin SK, Chakraborty A. One step synthesis of maltose functionalized red fluorescent Ag cluster for specific glycoprotein detection and cellular imaging probe. RSC Adv 2014. [DOI: 10.1039/c4ra06723a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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228
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Kong W, Liu R, Li H, Liu J, Huang H, Liu Y, Kang Z. High-bright fluorescent carbon dots and their application in selective nucleoli staining. J Mater Chem B 2014; 2:5077-5082. [DOI: 10.1039/c4tb00579a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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229
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Polyglycerol-coated nanodiamond as a macrophage-evading platform for selective drug delivery in cancer cells. Biomaterials 2014; 35:5393-5406. [DOI: 10.1016/j.biomaterials.2014.03.041] [Citation(s) in RCA: 134] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 03/17/2014] [Indexed: 12/19/2022]
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230
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Wehling J, Dringen R, Zare RN, Maas M, Rezwan K. Bactericidal activity of partially oxidized nanodiamonds. ACS NANO 2014; 8:6475-6483. [PMID: 24861876 DOI: 10.1021/nn502230m] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nanodiamonds are a class of carbon-based nanoparticles that are rapidly gaining attention, particularly for biomedical applications, i.e., as drug carriers, for bioimaging, or as implant coatings. Nanodiamonds have generally been considered biocompatible with a broad variety of eukaryotic cells. We show that, depending on their surface composition, nanodiamonds kill Gram-positive and -negative bacteria rapidly and efficiently. We investigated six different types of nanodiamonds exhibiting diverse oxygen-containing surface groups that were created using standard pretreatment methods for forming nanodiamond dispersions. Our experiments suggest that the antibacterial activity of nanodiamond is linked to the presence of partially oxidized and negatively charged surfaces, specifically those containing acid anhydride groups. Furthermore, proteins were found to control the bactericidal properties of nanodiamonds by covering these surface groups, which explains the previously reported biocompatibility of nanodiamonds. Our findings describe the discovery of an exciting property of partially oxidized nanodiamonds as a potent antibacterial agent.
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Affiliation(s)
- Julia Wehling
- Advanced Ceramics, University of Bremen , Am Biologischen Garten 2, 28359 Bremen, Germany
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231
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Zurbuchen MA, Lake MP, Kohan SA, Leung B, Bouchard LS. Nanodiamond landmarks for subcellular multimodal optical and electron imaging. Sci Rep 2014; 3:2668. [PMID: 24036840 PMCID: PMC3773618 DOI: 10.1038/srep02668] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Accepted: 08/30/2013] [Indexed: 11/09/2022] Open
Abstract
There is a growing need for biolabels that can be used in both optical and electron microscopies, are non-cytotoxic, and do not photobleach. Such biolabels could enable targeted nanoscale imaging of sub-cellular structures, and help to establish correlations between conjugation-delivered biomolecules and function. Here we demonstrate a sub-cellular multi-modal imaging methodology that enables localization of inert particulate probes, consisting of nanodiamonds having fluorescent nitrogen-vacancy centers. These are functionalized to target specific structures, and are observable by both optical and electron microscopies. Nanodiamonds targeted to the nuclear pore complex are rapidly localized in electron-microscopy diffraction mode to enable "zooming-in" to regions of interest for detailed structural investigations. Optical microscopies reveal nanodiamonds for in-vitro tracking or uptake-confirmation. The approach is general, works down to the single nanodiamond level, and can leverage the unique capabilities of nanodiamonds, such as biocompatibility, sensitive magnetometry, and gene and drug delivery.
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Affiliation(s)
- Mark A Zurbuchen
- 1] Department of Materials Science and Engineering [2] California NanoSystems Institute [3] Western Institute of Nanoelectronics, Department of Electrical Engineering
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232
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Wu Q, Zhao Y, Fang J, Wang D. Immune response is required for the control of in vivo translocation and chronic toxicity of graphene oxide. NANOSCALE 2014; 6:5894-5906. [PMID: 24756229 DOI: 10.1039/c4nr00699b] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Graphene oxide (GO) shows great promise as a nanomaterial for medical applications; however, the mechanism for its long-term adverse effects is still largely unclear. Here, we show that chronic GO exposure not only caused damage on the function of both primary and secondary targeted organs but also induced severe accumulation of pathogenic microbial food (OP50) in the intestine of Caenorhabditis elegans, a non-mammalian alternative toxicity assay system. GO accumulated in the intestine could be largely co-localized with OP50 and induced decreased immune response of animals. In contrast, feeding with UV-treated OP50 suppressed GO toxicity and accumulation in the intestine and maintained the relatively normal immune response of animals. The severe accumulation of OP50 in the intestine might be partially due to the damage by GO on the development and function of AVL and DVB neurons controlling defecation behavior. Reduction of chronic GO toxicity by PEG surface modification largely resulted from the inhibition of OP50 accumulation in the intestine and the maintenance of normal immune response. Our results highlight the key role of innate immunity in regulating in vivo chronic GO toxicity, which will be helpful for our understanding of the interactions between nanomaterials and biological systems during the long-term development of animals.
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Affiliation(s)
- Qiuli Wu
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China.
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233
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234
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Balasubramanian G, Lazariev A, Arumugam SR, Duan DW. Nitrogen-Vacancy color center in diamond—emerging nanoscale applications in bioimaging and biosensing. Curr Opin Chem Biol 2014; 20:69-77. [DOI: 10.1016/j.cbpa.2014.04.014] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 04/24/2014] [Accepted: 04/28/2014] [Indexed: 11/17/2022]
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235
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Zhang H, Aharonovich I, Glenn DR, Schalek R, Magyar AP, Lichtman JW, Hu EL, Walsworth RL. Silicon-vacancy color centers in nanodiamonds: cathodoluminescence imaging markers in the near infrared. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2014; 10:1908-1913. [PMID: 24596272 DOI: 10.1002/smll.201303582] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 01/15/2014] [Indexed: 06/03/2023]
Affiliation(s)
- Huiliang Zhang
- Department of Physics, Harvard University, Cambridge, MA, 02138, USA
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236
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Slegerova J, Rehor I, Havlik J, Raabova H, Muchova E, Cigler P. Nanodiamonds as Intracellular Probes for Imaging in Biology and Medicine. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/978-94-017-8896-0_18] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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237
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Rondin L, Tetienne JP, Hingant T, Roch JF, Maletinsky P, Jacques V. Magnetometry with nitrogen-vacancy defects in diamond. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2014; 77:056503. [PMID: 24801494 DOI: 10.1088/0034-4885/77/5/056503] [Citation(s) in RCA: 281] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The isolated electronic spin system of the nitrogen-vacancy (NV) centre in diamond offers unique possibilities to be employed as a nanoscale sensor for detection and imaging of weak magnetic fields. Magnetic imaging with nanometric resolution and field detection capabilities in the nanotesla range are enabled by the atomic-size and exceptionally long spin-coherence times of this naturally occurring defect. The exciting perspectives that ensue from these characteristics have triggered vivid experimental activities in the emerging field of 'NV magnetometry'. It is the purpose of this article to review the recent progress in high-sensitivity nanoscale NV magnetometry, generate an overview of the most pertinent results of the last years and highlight perspectives for future developments. We will present the physical principles that allow for magnetic field detection with NV centres and discuss first applications of NV magnetometers that have been demonstrated in the context of nano magnetism, mesoscopic physics and the life sciences.
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Affiliation(s)
- L Rondin
- Laboratoire de Photonique Quantique et Moléculaire, Ecole Normale Supérieure de Cachan and CNRS UMR 8537, 94235 Cachan Cedex, France
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238
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Chen YC, Tsai CY, Lee CY, Lin IN. In vitro and in vivo evaluation of ultrananocrystalline diamond as an encapsulation layer for implantable microchips. Acta Biomater 2014; 10:2187-99. [PMID: 24440422 DOI: 10.1016/j.actbio.2014.01.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/21/2013] [Accepted: 01/08/2014] [Indexed: 11/24/2022]
Abstract
Thin ultrananocrystalline diamond (UNCD) films were evaluated for use as hermetic and bioinert encapsulating coatings for implantable microchips, where the reaction to UNCD in vitro and in vivo tissue was investigated. Leakage current tests showed that depositing UNCD coatings, which were conformally grown in (1% H2) Ar/CH4 plasma, on microchips rendered the surface electrochemically inactive, i.e. with a very low leakage current density (2.8×10(-5)Acm(-2) at -1V and 1.9×10(-3)Acm(-2) at ±5V) ex vivo. The impact of UNCD with different surface modifications on the growth and activation of macrophages was compared to that of standard-grade polystyrene. Macrophages attached to oxygen-terminated UNCD films down-regulated their production of cytokines and chemokines. Moreover, with UNCD-coated microchips, which were implanted subcutaneously into BALB/c mice for up to 3months, the tissue reaction and capsule formation was significantly decreased compared to the medical-grade titanium alloy Ti-6Al-4V and bare silicon. Additionally, the leakage current density, elicited by electrochemical activity, on silicon chips encapsulated in oxygen-terminated UNCD coatings remained at the low level of 2.5×10(-3)Acm(-2) at 5V for up to 3months in vivo, which is half the level of those encapsulated in hydrogen-terminated UNCD coatings. Thus, controlling the surface properties of UNCDs makes it possible to manipulate the in vivo functionality and stability of implantable devices so as to reduce the host inflammatory response following implantation. These observations suggest that oxygen-terminated UNCDs are promising candidates for use as encapsulating coatings for implantable microelectronic devices.
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239
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Vega-Alvarez S, Herrera A, Rinaldi C, Carrero-Martínez FA. Tissue-specific direct microtransfer of nanomaterials into Drosophila embryos as a versatile in vivo test bed for nanomaterial toxicity assessment. Int J Nanomedicine 2014; 9:2031-41. [PMID: 24790441 PMCID: PMC4003270 DOI: 10.2147/ijn.s56459] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Nanomaterials are the subject of intense research, focused on their synthesis, modification, and biomedical applications. Increased nanomaterial production and their wide range of applications imply a higher risk of human and environmental exposure. Unfortunately, neither environmental effects nor toxicity of nanomaterials to organisms are fully understood. Cost-effective, rapid toxicity assays requiring minimal amounts of materials are needed to establish both their biomedical potential and environmental safety standards. Drosophila exemplifies an efficient and cost-effective model organism with a vast repertoire of in vivo tools and techniques, all with high-throughput scalability and screening feasibility throughout its life cycle. Here we report tissue specific nanomaterial assessment through direct microtransfer into target tissues. We tested several nanomaterials with potential biomedical applications such as single-wall carbon nanotubes, multiwall carbon nanotubes, silver, gold, titanium dioxide, and iron oxide nanoparticles. Assessment of nanomaterial toxicity was conducted by evaluating progression through developmental morphological milestones in Drosophila. This cost-effective assessment method is amenable to high-throughput screening.
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Affiliation(s)
- Sasha Vega-Alvarez
- Department of Biology, University of Puerto Rico-Mayagüez, Mayagüez, Puerto Rico
| | - Adriana Herrera
- Department of Chemical Engineering, University of Puerto Rico-Mayagüez, Mayagüez, Puerto Rico
| | - Carlos Rinaldi
- Department of Chemical Engineering, University of Puerto Rico-Mayagüez, Mayagüez, Puerto Rico ; J Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA ; Department of Chemical Engineering, University of Florida, Gainesville, FL, USA
| | - Franklin A Carrero-Martínez
- Department of Biology, University of Puerto Rico-Mayagüez, Mayagüez, Puerto Rico ; Department of Anatomy and Neuroscience, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico
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240
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Zhao Y, Wu Q, Li Y, Nouara A, Jia R, Wang D. In vivo translocation and toxicity of multi-walled carbon nanotubes are regulated by microRNAs. NANOSCALE 2014; 6:4275-4284. [PMID: 24614909 DOI: 10.1039/c3nr06784j] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We employed an in vivo Caenorhabditis elegans assay system to perform SOLiD sequencing analysis to identify the possible microRNA (miRNA) targets of multi-walled carbon nanotubes (MWCNTs). Bioinformatics analysis on targeted genes for the identified dysregulated miRNAs in MWCNT exposed nematodes demonstrates their involvement in many aspects of biological processes. We used loss-of-function mutants for the identified dysregulated miRNAs to perform toxicity assessment by evaluating functions of primary and secondary targeted organs, and found the miRNA mutants with susceptible or resistant property towards MWCNT toxicity. Both the physiological state of the intestine and defecation behavior were involved in the control of the susceptible or resistant property occurrence for specific miRNA mutants towards MWCNT toxicity. This work provides the molecular basis at the miRNA level for future chemical design to reduce the nanotoxicity of MWCNTs and further elucidation of the related toxicological mechanism.
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Affiliation(s)
- Yunli Zhao
- Key Laboratory of Environmental Medicine Engineering in Ministry of Education, Medical School of Southeast University, Nanjing 210009, China.
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241
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Pantazis P, Supatto W. Advances in whole-embryo imaging: a quantitative transition is underway. Nat Rev Mol Cell Biol 2014; 15:327-39. [DOI: 10.1038/nrm3786] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Hollenberg L. Nanoscale MRI: dark spins in the spotlight. NATURE NANOTECHNOLOGY 2014; 9:253-255. [PMID: 24658169 DOI: 10.1038/nnano.2014.65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- Lloyd Hollenberg
- Centre for Quantum Computation & Communication Technology, School of Physics University of Melbourne, Victoria 3010, Australia
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243
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Sarkar SK, Bumb A, Wu X, Sochacki KA, Kellman P, Brechbiel MW, Neuman KC. Wide-field in vivo background free imaging by selective magnetic modulation of nanodiamond fluorescence. BIOMEDICAL OPTICS EXPRESS 2014; 5:1190-202. [PMID: 24761300 PMCID: PMC3985990 DOI: 10.1364/boe.5.001190] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/06/2014] [Accepted: 03/07/2014] [Indexed: 05/22/2023]
Abstract
The sensitivity and resolution of fluorescence-based imaging in vivo is often limited by autofluorescence and other background noise. To overcome these limitations, we have developed a wide-field background-free imaging technique based on magnetic modulation of fluorescent nanodiamond emission. Fluorescent nanodiamonds are bright, photo-stable, biocompatible nanoparticles that are promising probes for a wide range of in vitro and in vivo imaging applications. Our readily applied background-free imaging technique improves the signal-to-background ratio for in vivo imaging up to 100-fold. This technique has the potential to significantly improve and extend fluorescent nanodiamond imaging capabilities on diverse fluorescence imaging platforms.
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Affiliation(s)
- Susanta K. Sarkar
- Laboratory of Molecular Biophysics, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
- These authors contributed equally to the work
| | - Ambika Bumb
- Laboratory of Molecular Biophysics, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
- These authors contributed equally to the work
| | - Xufeng Wu
- Cell Biology & Physiology Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kem A. Sochacki
- Laboratory of Molecular Biophysics, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Peter Kellman
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Martin W. Brechbiel
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Keir C. Neuman
- Laboratory of Molecular Biophysics, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA
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244
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Mathew ND, Mathew MD, Surawski PP. Nanoparticle imaging and diagnostic of Caenorhabditis elegans intracellular pH. Anal Biochem 2014; 450:52-6. [DOI: 10.1016/j.ab.2014.01.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/17/2014] [Accepted: 01/20/2014] [Indexed: 12/29/2022]
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245
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Schirhagl R, Chang K, Loretz M, Degen CL. Nitrogen-Vacancy Centers in Diamond: Nanoscale Sensors for Physics and Biology. Annu Rev Phys Chem 2014; 65:83-105. [DOI: 10.1146/annurev-physchem-040513-103659] [Citation(s) in RCA: 803] [Impact Index Per Article: 80.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Kevin Chang
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland;
| | - Michael Loretz
- Department of Physics, ETH Zürich, 8093 Zürich, Switzerland;
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246
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Simpson DA, Thompson AJ, Kowarsky M, Zeeshan NF, Barson MSJ, Hall LT, Yan Y, Kaufmann S, Johnson BC, Ohshima T, Caruso F, Scholten RE, Saint RB, Murray MJ, Hollenberg LCL. In vivo imaging and tracking of individual nanodiamonds in drosophila melanogaster embryos. BIOMEDICAL OPTICS EXPRESS 2014; 5:1250-61. [PMID: 24761304 PMCID: PMC3985983 DOI: 10.1364/boe.5.001250] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 03/11/2014] [Accepted: 03/18/2014] [Indexed: 05/23/2023]
Abstract
In this work, we incorporate and image individual fluorescent nanodiamonds in the powerful genetic model system Drosophila melanogaster. Fluorescence correlation spectroscopy and wide-field imaging techniques are applied to individual fluorescent nanodiamonds in blastoderm cells during stage 5 of development, up to a depth of 40 µm. The majority of nanodiamonds in the blastoderm cells during cellularization exhibit free diffusion with an average diffusion coefficient of (6 ± 3) × 10(-3) µm(2)/s, (mean ± SD). Driven motion in the blastoderm cells was also observed with an average velocity of 0.13 ± 0.10 µm/s (mean ± SD) µm/s and an average applied force of 0.07 ± 0.05 pN (mean ± SD). Nanodiamonds in the periplasm between the nuclei and yolk were also found to undergo free diffusion with a significantly larger diffusion coefficient of (63 ± 35) × 10(-3) µm(2)/s (mean ± SD). Driven motion in this region exhibited similar average velocities and applied forces compared to the blastoderm cells indicating the transport dynamics in the two cytoplasmic regions are analogous.
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Affiliation(s)
- David A. Simpson
- School of Physics, The University of Melbourne, Victoria 3010, Australia
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Victoria 3010, Australia
| | - Amelia J. Thompson
- Department of Genetics, The University of Melbourne, Victoria 3010, Australia
| | - Mark Kowarsky
- School of Physics, The University of Melbourne, Victoria 3010, Australia
| | - Nida F. Zeeshan
- Department of Genetics, The University of Melbourne, Victoria 3010, Australia
| | | | - Liam T. Hall
- School of Physics, The University of Melbourne, Victoria 3010, Australia
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Victoria 3010, Australia
| | - Yan Yan
- Department of Chemical and Bio-molecular Engineering, University of Melbourne, Victoria 3010, Australia
| | - Stefan Kaufmann
- School of Physics, The University of Melbourne, Victoria 3010, Australia
| | - Brett C. Johnson
- School of Physics, The University of Melbourne, Victoria 3010, Australia
- Radiation Effects Group, Japan Atomic Energy Agency, Takasaki, Gunma 370-1292, Japan
| | - Takeshi Ohshima
- Radiation Effects Group, Japan Atomic Energy Agency, Takasaki, Gunma 370-1292, Japan
| | - Frank Caruso
- Department of Chemical and Bio-molecular Engineering, University of Melbourne, Victoria 3010, Australia
| | - Robert E. Scholten
- School of Physics, The University of Melbourne, Victoria 3010, Australia
- Centre for Coherent X-ray Science, School of Physics, University of Melbourne, Victoria 3010, Australia
| | - Robert B. Saint
- Department of Genetics, The University of Melbourne, Victoria 3010, Australia
| | - Michael J. Murray
- Department of Genetics, The University of Melbourne, Victoria 3010, Australia
| | - Lloyd C. L. Hollenberg
- School of Physics, The University of Melbourne, Victoria 3010, Australia
- Centre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Victoria 3010, Australia
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247
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Qiao Y, Zhao Y, Wu Q, Sun L, Ruan Q, Chen Y, Wang M, Duan J, Wang D. Full toxicity assessment of Genkwa Flos and the underlying mechanism in nematode Caenorhabditis elegans. PLoS One 2014; 9:e91825. [PMID: 24626436 PMCID: PMC3953530 DOI: 10.1371/journal.pone.0091825] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Accepted: 02/16/2014] [Indexed: 01/10/2023] Open
Abstract
Genkwa Flos (GF), the dried flower bud from Daphne genkwa Sieb. et Zucc. (Thymelaeaceae), is a well-known and widely used traditional Chinese medicine. However, we know little about the in vivo mechanism of GF toxicity. Nematode Caenorhabditis elegans has been considered as a useful toxicity assay system by offering a system best suited for asking the in vivo questions. In the present study, we employed the prolonged exposure assay system of C. elegans to perform the full in vivo toxicity assessment of raw-processed GF. Our data show that GF exposure could induce the toxicity on lifespan, development, reproduction, and locomotion behavior. GF exposure not only decreased body length but also induced the formation of abnormal vulva. The decrease in brood size in GF exposed nematodes appeared mainly at day-1 during the development of adult nematodes. The decrease of locomotion behavior in GF exposed nematodes might be due to the damage on development of D-type GABAergic motor neurons. Moreover, we observed the induction of intestinal reactive oxygen species (ROS) production and alteration of expression patterns of genes required for development of apical domain, microvilli, and apical junction of intestine in GF exposed nematodes, implying the possible dysfunction of the primary targeted organ. In addition, GF exposure induced increase in defecation cycle length and deficits in development of AVL and DVB neurons controlling the defecation behavior. Therefore, our study implies the usefulness of C. elegans assay system for toxicity assessment from a certain Chinese medicine or plant extract. The observed toxicity of GF might be the combinational effects of oxidative stress, dysfunction of intestine, and altered defecation behavior in nematodes.
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Affiliation(s)
- Yan Qiao
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Medical School of Southeast University, Nanjing, China
| | - Yunli Zhao
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Medical School of Southeast University, Nanjing, China
| | - Qiuli Wu
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Medical School of Southeast University, Nanjing, China
| | - Lingmei Sun
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Medical School of Southeast University, Nanjing, China
| | - Qinli Ruan
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yanyan Chen
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
| | - Meng Wang
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jinao Duan
- Jiangsu Key Laboratory for High Technology Research of TCM Formulae, Nanjing University of Chinese Medicine, Nanjing, China
| | - Dayong Wang
- Key Laboratory of Developmental Genes and Human Disease in Ministry of Education, Medical School of Southeast University, Nanjing, China
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248
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Polak N, Read DS, Jurkschat K, Matzke M, Kelly FJ, Spurgeon DJ, Stürzenbaum SR. Metalloproteins and phytochelatin synthase may confer protection against zinc oxide nanoparticle induced toxicity in Caenorhabditis elegans. Comp Biochem Physiol C Toxicol Pharmacol 2014; 160:75-85. [PMID: 24333255 DOI: 10.1016/j.cbpc.2013.12.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/03/2013] [Accepted: 12/04/2013] [Indexed: 12/28/2022]
Abstract
Zinc oxide nanoparticles (ZnONPs) are used in large quantities by the cosmetic, food and textile industries. Here we exposed Caenorhabditis elegans wild-type and a metal sensitive triple knockout mutant (mtl-1;mtl-2;pcs-1) to ZnONPs (0-50mg/L) to study strain and exposure specific effects on transcription, reactive oxygen species generation, the biomolecular phenotype (measured by Raman microspectroscopy) and key endpoints of the nematode life cycle (growth, reproduction and lifespan). A significant dissolution effect was observed, where dissolved ZnO constituted over 50% of total Zn within a two day exposure to the test medium, suggesting that the nominal exposure to pure ZnONPs represents in vivo, at best, a mixture exposure of ionic zinc and nanoparticles. Nevertheless, the analyses provided evidence that the metallothioneins (mtl-1 and mtl-2), the phytochelatin synthase (pcs-1) and an apoptotic marker (cep-1) were transcriptionally activated. In addition, the DCFH-DA assay provided in vitro evidence of the oxidative potential of ZnONPs in the metal exposure sensitive triple mutant. Raman spectroscopy highlighted that the biomolecular phenotype changes significantly in the mtl-1;mtl-2;pcs-1 triple knockout worm upon ZnONP exposure, suggesting that these metalloproteins are instrumental in the protection against cytotoxic damage. Finally, ZnONP exposure was shown to decrease growth and development, reproductive capacity and lifespan, effects which were amplified in the triple knockout. By combining diverse toxicological strategies, we identified that individuals (genotypes) housing mutations in key metalloproteins and phytochelatin synthase are more susceptible to ZnONP exposure, which underlines their importance to minimize ZnONP induced toxicity.
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Affiliation(s)
- Natasa Polak
- MRC-HPA Centre for Environment & Health, School of Biomedical Sciences, King's College London, London, UK
| | - Daniel S Read
- Centre for Ecology and Hydrology, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
| | - Kerstin Jurkschat
- Department of Materials, Hirsch Building, University of Oxford, Kidlington OX5 1PF, UK
| | - Marianne Matzke
- Centre for Ecology and Hydrology, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
| | - Frank J Kelly
- MRC-HPA Centre for Environment & Health, School of Biomedical Sciences, King's College London, London, UK
| | - David J Spurgeon
- Centre for Ecology and Hydrology, Maclean Building, Wallingford, Oxfordshire OX10 8BB, UK
| | - Stephen R Stürzenbaum
- MRC-HPA Centre for Environment & Health, School of Biomedical Sciences, King's College London, London, UK.
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249
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Dolan PR, Li X, Storteboom J, Gu M. Complete determination of the orientation of NV centers with radially polarized beams. OPTICS EXPRESS 2014; 22:4379-87. [PMID: 24663761 DOI: 10.1364/oe.22.004379] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In this paper, we report on the precise determination of the orientation of NV centers by imaging with a radially polarized beam. Vectorial Debye theory is applied to the field in the focus of radially polarized beams to generate emission profiles of two orthogonal optical dipoles. By comparing features of the measured emission intensity patterns with simulated results, complete orientation determination of the NV axis is achieved. Results are corroborated by using established methods requiring the polarization rotation of a linearly polarized excitation source, and by analysis of optically detected magnetic resonance spectra. These results lay new ground for any application where the knowledge of the orientation of the NV centers is prerequisite.
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250
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Li Y, Tong Y, Cao R, Tian Z, Yang B, Yang P. In vivo enhancement of anticancer therapy using bare or chemotherapeutic drug-bearing nanodiamond particles. Int J Nanomedicine 2014; 9:1065-82. [PMID: 24591828 PMCID: PMC3937184 DOI: 10.2147/ijn.s54864] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Background This study investigated the use of nanodiamond particles (NDs) as a promising material for drug delivery in vivo and in vitro. Methods HepG2 cells (a human hepatic carcinoma cell line) were used to determine the characteristics of a nanodiamond-doxorubicin complex (ND-DOX) when taken up by cells in vitro using laser scanning confocal microscopy and dialysis experiments. We also compared the survival rate and histopathology of tumor-bearing mice after treatment with NDs or ND-DOX in vivo. Results In vitro investigation showed that ND-DOX has slow and sustained drug release characteristics compared with free doxorubicin. In vivo, the survival rate of tumor-bearing mice treated with ND-DOX was four times greater than that of mice treated with free doxorubicin. Interestingly, the survival rate in mice treated with NDs alone was close to that of mice treated with free doxorubicin. This indicates that treatment with ND-DOX can prolong the lifespan of tumor-bearing mice significantly compared with conventional doxorubicin and that NDs can have this effect as well. Histopathological analysis showed that neither the NDs nor ND-DOX were toxic to the kidney, liver, or spleen in contrast with the well-known toxic effects of free doxorubicin on the kidney and liver. Further, both the bare NDs and ND-DOX could suppress tumor growth effectively. Conclusion NDs can potentially prolong survival, and ND-DOX may act as a nanodrug with promising chemotherapeutic efficacy and safety.
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Affiliation(s)
- Yingqi Li
- Department of Chemistry, College of Chemistry and Chemical Engineering, Taiyuan, People's Republic of China ; Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, People's Republic of China
| | - Yaoli Tong
- Department of Chemistry, College of Chemistry and Chemical Engineering, Taiyuan, People's Republic of China
| | - Ruixia Cao
- Department of Chemistry, College of Chemistry and Chemical Engineering, Taiyuan, People's Republic of China
| | - Zhimei Tian
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, People's Republic of China
| | - Binsheng Yang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, People's Republic of China
| | - Pin Yang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan, People's Republic of China
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