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Journal of Nanobiotechnology

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https://www.readbyqxmd.com/read/29769077/magnetic-field-distribution-modulation-of-intrathecal-delivered-ketorolac-iron-oxide-nanoparticle-conjugates-produce-excellent-analgesia-for-chronic-inflammatory-pain
#1
Ping-Ching Wu, Dar-Bin Shieh, Hung-Tsung Hsiao, Jeffery Chi-Fei Wang, Ya-Chi Lin, Yen-Chin Liu
BACKGROUND: Nanoparticles have become one of the most promising among the potential materials used for biomedical applications. However, few researchers have focused on their effects on analgesia. Despite the fact that various nanoparticles have been evaluated for drug delivery and MRI imaging contrast enhancement in clinical settings, no reports have investigated the in vivo synergy of ketorolac iron-oxide nanoparticle conjugates to improve the analgesic effect. METHODS: Ketorolac conjugated magnetic iron oxide nanoparticles (Keto-SPIO) were synthesized via two-stage additions of protective agents and chemical co-precipitation...
May 16, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29751767/development-of-gold-nanoparticles-biosensor-for-ultrasensitive-diagnosis-of-foot-and-mouth-disease-virus
#2
Mervat E Hamdy, Michele Del Carlo, Hussein A Hussein, Taher A Salah, Ayman H El-Deeb, Mohamed M Emara, Guilia Pezzoni, Dario Compagnone
BACKGROUND: Nano-PCR is a recent tool that is used in viral diseases diagnosis. The technique depends on the fundamental effects of gold nanoparticles (AuNPs) and is considered a very effective and sensitive tool in the diagnosis of different diseases including viral diseases. Although several techniques are currently available to diagnose foot and mouth disease virus (FMDV), a highly sensitive, highly specific technique is needed for specific diagnosis of the disease. In the present work, a novel AuNPs biosensor has been designed using thiol-linked oligonucleotides that recognize the conserved 3D gene of FMDV...
May 11, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29720232/highly-sensitive-and-robust-peroxidase-like-activity-of-au-pt-core-shell-nanorod-antigen-conjugates-for-measles-virus-diagnosis
#3
Lin Long, Jianbo Liu, Kaishun Lu, Tao Zhang, Yunqing Xie, Yinglu Ji, Xiaochun Wu
BACKGROUND: As a promising candidate for artificial enzymes, catalytically active nanomaterials show several advantages over natural enzymes, such as controlled synthesis at low cost, tunability of catalytic activities, and high stability under stringent conditions. Rod-shaped Au-Pt core/shell nanoparticles (Au@Pt NRs), prepared by Au nanorod-mediated growth, exhibit peroxidase-like activities and could serve as an inexpensive replacement for horseradish peroxidase, with potential applications in various bio-detections...
May 2, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29720199/immunoassays-for-scarce-tumour-antigens-in-exosomes-detection-of-the-human-nkg2d-ligand-mica-in-tetraspanin-containing-nanovesicles-from-melanoma
#4
Sheila López-Cobo, Carmen Campos-Silva, Amanda Moyano, Myriam Oliveira-Rodríguez, Annette Paschen, María Yáñez-Mó, María Carmen Blanco-López, Mar Valés-Gómez
BACKGROUND: Tumour-derived exosomes can be released to serum and provide information on the features of the malignancy, however, in order to perform systematic studies in biological samples, faster diagnostic techniques are needed, especially for detection of low abundance proteins. Most human cancer cells are positive for at least one ligand for the activating immune receptor NKG2D and the presence in plasma of NKG2D-ligands can be associated with prognosis. METHODS: Using MICA as example of a tumour-derived antigen, endogenously expressed in metastatic melanoma and recruited to exosomes, we have developed two immunocapture-based assays for detection of different epitopes in nanovesicles...
May 2, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29703212/identification-of-interneurons-required-for-the-aversive-response-of-caenorhabditis-elegans-to-graphene-oxide
#5
Guosheng Xiao, He Chen, Natalia Krasteva, Qizhan Liu, Dayong Wang
BACKGROUND: So far, how the animals evade the environmental nanomaterials is still largely unclear. In this study, we employed in vivo assay system of Caenorhabditis elegans to investigate the aversive behavior of nematodes to graphene oxide (GO) and the underlying neuronal basis. RESULTS: In this assay model, we detected the significant aversive behavior of nematodes to GO at concentrations more than 50 mg/L. Loss-of-function mutation of nlg-1 encoding a neuroligin with the function in connecting pre- and post-synaptic neurons suppressed the aversive behavior of nematodes to GO...
April 27, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29695232/biocompatibility-assessment-of-single-walled-carbon-nanotubes-using-saccharomyces-cerevisiae-as-a-model-organism
#6
Song Zhu, Fei Luo, Jian Li, Bin Zhu, Gao-Xue Wang
BACKGROUND: Single-walled carbon nanotubes (SWCNTs) have many potential applications in various fields. Especially, the unique physicochemical properties make them as the prime candidates for applications in biomedical fields. However, biocompatibility of SWCNTs has been a major concern for their applications. In the study, biocompatibility of oxidized SWCNTs (O-SWCNTs) was assessed using Saccharomyces cerevisiae (S. cerevisiae) as a model organism. RESULTS: Cell proliferation and viability were significantly changed after exposure to O-SWCNTs (188...
April 25, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29673366/improving-cytocompatibility-of-cdte-quantum-dots-by-schiff-base-coordinated-lanthanides-surface-doping
#7
Hana Buchtelova, Vladislav Strmiska, Zuzana Skubalova, Simona Dostalova, Petr Michalek, Sona Krizkova, David Hynek, Lukas Kalina, Lukas Richtera, Amitava Moulick, Vojtech Adam, Zbynek Heger
BACKGROUND: Suitable fluorophores are the core of fluorescence imaging. Among the most exciting, yet controversial, labels are quantum dots (QDs) with their unique optical and chemical properties, but also considerable toxicity. This hinders QDs applicability in living systems. Surface chemistry has a profound impact on biological behavior of QDs. This study describes a two-step synthesis of QDs formed by CdTe core doped with Schiff base ligand for lanthanides [Ln (Yb3+ , Tb3+ and Gd3+ )] as novel cytocompatible fluorophores...
April 19, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29673352/a-multifunctional-targeting-probe-with-dual-mode-imaging-and-photothermal-therapy-used-in-vivo
#8
Xiao-Shuai Zhang, Yang Xuan, Xiao-Quan Yang, Kai Cheng, Ruo-Yun Zhang, Cheng Li, Fang Tan, Yuan-Cheng Cao, Xian-Lin Song, Jie An, Xiao-Lin Hou, Yuan-Di Zhao
BACKGROUND: Ag2 S has the characteristics of conventional quantum dot such as broad excitation spectrum, narrow emission spectrum, long fluorescence lifetime, strong anti-bleaching ability, and other optical properties. Moreover, since its fluorescence emission is located in the NIR-II region, has stronger penetrating ability for tissue. Ag2 S quantum dot has strong absorption during the visible and NIR regions, it has good photothermal and photoacoustic response under certain wavelength excitation...
April 19, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29669544/pegylated-crushed-gold-shell-radiolabeled-core-nanoballs-for-in-vivo-tumor-imaging-with-dual-positron-emission-tomography-and-cerenkov-luminescent-imaging
#9
Sang Bong Lee, Dinesh Kumar, Yinghua Li, In-Kyu Lee, Sung Jin Cho, Sang Kyoon Kim, Sang-Woo Lee, Shin Young Jeong, Jaetae Lee, Yong Hyun Jeon
BACKGROUND: Radioactive isotope-labeled gold nanomaterials have potential biomedical applications. Here, we report the synthesis and characterization of PEGylated crushed gold shell-radioactive iodide-124-labeled gold core nanoballs (PEG-124 I-Au@AuCBs) for in vivo tumor imaging applications through combined positron emission tomography and Cerenkov luminescent imaging (PET/CLI). RESULTS: PEG-124 I-Au@AuCBs showed high stability and sensitivity in various pH solutions, serum, and in vivo conditions and were not toxic to tested cells...
April 18, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29653579/delivery-of-sirna-in-vitro-and-in-vivo-using-pei-capped-porous-silicon-nanoparticles-to-silence-mrp1-and-inhibit-proliferation-in-glioblastoma
#10
Wing Yin Tong, Mohammed Alnakhli, Richa Bhardwaj, Sinoula Apostolou, Sougata Sinha, Cara Fraser, Tim Kuchel, Bryone Kuss, Nicolas H Voelcker
BACKGROUND: Multidrug resistance-associated protein 1 (MRP1) overexpression plays a major role in chemoresistance in glioblastoma multiforme (GBM) contributing to its notorious deadly nature. Although MRP1-siRNA transfection to GBM in vitro has been shown to sensitise the cells to drug, MRP1 silencing in vivo and the phenotypic influence on the tumour and normal tissues upon MRP1 down-regulation have not been established. Here, porous silicon nanoparticles (pSiNPs) that enable high-capacity loading and delivery of siRNA are applied in vitro and in vivo...
April 13, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29653577/nanotechnology-based-approaches-for-detection-and-delivery-of-microrna-in-healthcare-and-crop-protection
#11
REVIEW
Vrantika Chaudhary, Sumit Jangra, Neelam R Yadav
Nanobiotechnology has the potential to revolutionize diverse sectors including medicine, agriculture, food, textile and pharmaceuticals. Disease diagnostics, therapeutics and crop protection strategies are fast emerging using nanomaterials preferably nanobiomaterials. It has potential for development of novel nanobiomolecules which offer several advantages over conventional treatment methods. RNA nanoparticles with many unique features are promising candidates in disease treatment. The miRNAs are involved in many biochemical and developmental pathways and their regulation in plants and animals...
April 13, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29653575/enhanced-stability-of-a-chimeric-hepatitis-b-core-antigen-virus-like-particle-hbcag-vlp-by-a-c-terminal-linker-hexahistidine-peptide
#12
Jens Schumacher, Tijana Bacic, René Staritzbichler, Matin Daneschdar, Thorsten Klamp, Philipp Arnold, Sabrina Jägle, Özlem Türeci, Jürgen Markl, Ugur Sahin
BACKGROUND: Virus-like-particles (VLPs) are attractive nanoparticulate scaffolds for broad applications in material/biological sciences and medicine. Prior their functionalization, specific adaptations have to be carried out. These adjustments frequently lead to disordered particles, but the particle integrity is an essential factor for the VLP suitability. Therefore, major requirements for particle stabilization exist. The objective of this study was to evaluate novel stabilizing elements for functionalized chimeric hepatitis B virus core antigen virus-like particles (HBcAg-VLP), with beneficial characteristics for vaccine development, imaging or delivery...
April 13, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29622040/measuring-dna-hybridization-using-fluorescent-dna-stabilized-silver-clusters-to-investigate-mismatch-effects-on-therapeutic-oligonucleotides
#13
Donny de Bruin, Nelli Bossert, Annemieke Aartsma-Rus, Dirk Bouwmeester
BACKGROUND: Short nucleic acid oligomers have found a wide range of applications in experimental physics, biology and medicine, and show potential for the treatment of acquired and genetic diseases. These applications rely heavily on the predictability of hybridization through Watson-Crick base pairing to allow positioning on a nanometer scale, as well as binding to the target transcripts, but also off-target binding to transcripts with partial homology. These effects are of particular importance in the development of therapeutic oligonucleotides, where off-target effects caused by the binding of mismatched sequences need to be avoided...
April 6, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29602314/use-of-cilomilast-loaded-phosphatiosomes-to-suppress-neutrophilic-inflammation-for-attenuating-acute-lung-injury-the-effect-of-nanovesicular-surface-charge
#14
Fu-Chao Liu, Huang-Ping Yu, Cheng-Yu Lin, Ahmed O Elzoghby, Tsong-Long Hwang, Jia-You Fang
BACKGROUND: Cilomilast is a phosphodiesterase 4 (PDE4) inhibitor for treating inflammatory lung diseases. This agent has a narrow therapeutic index with significant adverse effects on the nervous system. This study was conducted to entrap cilomilast into PEGylated phosphatidylcholine-rich niosomes (phosphatiosomes) to improve pulmonary delivery via the strong affinity to pulmonary surfactant film. Neutrophils were used as a cell model to test the anti-inflammatory activity of phosphatiosomes...
March 30, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29602311/cardiomyocyte-targeted-and-17%C3%AE-estradiol-loaded-acoustic-nanoprobes-as-a-theranostic-platform-for-cardiac-hypertrophy
#15
Xueli Zhao, Wen Luo, Jing Hu, Lei Zuo, Jing Wang, Rui Hu, Bo Wang, Lei Xu, Jing Li, Meng Wu, Pan Li, Liwen Liu
BACKGROUND: Theranostic perfluorocarbon nanoprobes have recently attracted attention due to their fascinating versatility in integrating diagnostics and therapeutics into a single system. Furthermore, although 17β-estradiol (E2) is a potential anti-hypertrophic drug, it has severe non-specific adverse effects in various organs. Therefore, we have developed cardiomyocyte-targeted theranostic nanoprobes to achieve concurrent targeted imaging and treatment of cardiac hypertrophy. RESULTS: We had successfully synthesized E2-loaded, primary cardiomyocyte (PCM) specific peptide-conjugated nanoprobes with perfluorocarbon (PFP) as a core (PCM-E2/PFPs) and demonstrated their stability and homogeneity...
March 30, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29602308/gold-nanoparticles-stabilize-peptide-drug-conjugates-for-sustained-targeted-drug-delivery-to-cancer-cells
#16
Kalishwaralal Kalimuthu, Bat-Chen Lubin, Andrii Bazylevich, Gary Gellerman, Ofer Shpilberg, Galia Luboshits, Michael A Firer
BACKGROUND: Peptide-drug-conjugates (PDCs) are being developed as an effective strategy to specifically deliver cytotoxic drugs to cancer cells. However one of the challenges to their successful application is the relatively low stability of peptides in the blood, liver and kidneys. Since AuNPs seem to have a longer plasma half-life than PDCs, one approach to overcoming this problem would be to conjugate the PDCs to gold nanoparticles (AuNPs), as these have demonstrated favorable physico-chemical and safety properties for drug delivery systems...
March 30, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29602307/nanoparticles-engineered-to-bind-cellular-motors-for-efficient-delivery
#17
Inmaculada Dalmau-Mena, Pablo Del Pino, Beatriz Pelaz, Miguel Ángel Cuesta-Geijo, Inmaculada Galindo, María Moros, Jesús M de la Fuente, Covadonga Alonso
BACKGROUND: Dynein is a cytoskeletal molecular motor protein that transports cellular cargoes along microtubules. Biomimetic synthetic peptides designed to bind dynein have been shown to acquire dynamic properties such as cell accumulation and active intra- and inter-cellular motion through cell-to-cell contacts and projections to distant cells. On the basis of these properties dynein-binding peptides could be used to functionalize nanoparticles for drug delivery applications. RESULTS: Here, we show that gold nanoparticles modified with dynein-binding delivery sequences become mobile, powered by molecular motor proteins...
March 30, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29587764/ph-responsive-theranostic-nanocomposites-as-synergistically-enhancing-positive-and-negative-magnetic-resonance-imaging-contrast-agents
#18
Xi Huang, Yaping Yuan, Weiwei Ruan, Lianhua Liu, Maili Liu, Shizhen Chen, Xin Zhou
BACKGROUND: The rational design of theranostic nanoprobe to present responsive effect of therapeutic potency and enhanced diagnostic imaging in tumor milieu plays a vital role for efficient personalized cancer therapy and other biomedical applications. We aimed to afford a potential strategy to pose both T1 - and T2 -weighted MRI functions, and thereby realizing imaging guided drug delivery and targeted therapy. RESULTS: Theranostic nanocomposites Mn-porphyrin&Fe3 O4 @SiO2 @PAA-cRGD were fabricated and characterized, and the nanocomposites were effectively used in T1 - and T2 -weighted MRI and pH-responsive drug release...
March 27, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29587747/memantine-loaded-plga-pegylated-nanoparticles-for-alzheimer-s-disease-in-vitro-and-in-vivo-characterization
#19
Elena Sánchez-López, Miren Ettcheto, Maria Antonia Egea, Marta Espina, Amanda Cano, Ana Cristina Calpena, Antoni Camins, Nuria Carmona, Amélia M Silva, Eliana B Souto, Maria Luisa García
BACKGROUND: Memantine, drug approved for moderate to severe Alzheimer's disease, has not shown to be fully effective. In order to solve this issue, polylactic-co-glycolic (PLGA) nanoparticles could be a suitable solution to increase drug's action on the target site as well as decrease adverse effects. For these reason, Memantine was loaded in biodegradable PLGA nanoparticles, produced by double emulsion method and surface-coated with polyethylene glycol. MEM-PEG-PLGA nanoparticles (NPs) were aimed to target the blood-brain barrier (BBB) upon oral administration for the treatment of Alzheimer's disease...
March 27, 2018: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/29587743/proteomic-analysis-of-antimicrobial-effects-of-pegylated-silver-coated-carbon-nanotubes-in-salmonella-enterica-serovar-typhimurium
#20
Seong B Park, Christy S Steadman, Atul A Chaudhari, Shreekumar R Pillai, Shree R Singh, Peter L Ryan, Scott T Willard, Jean M Feugang
BACKGROUND: Synthesis of silver nano-compounds with enhanced antimicrobial effects is of great interest for the development of new antibacterial agents. Previous studies have reported the antibacterial properties of pegylated silver-coated carbon nanotubes (pSWCNT-Ag) showing less toxicity in human cell lines. However, the mechanism underlining the pSWCNT-Ag as a bactericidal agent remained unfolded. Here we assessed the pSWCNT-Ag effects against foodborne pathogenic bacteria growth and proteome profile changes...
March 27, 2018: Journal of Nanobiotechnology
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