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Nanotheranostics

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https://www.readbyqxmd.com/read/30148052/hyaluronic-acid-based-optical-probe-for-the-diagnosis-of-human-osteoarthritic-cartilage
#1
Shuxin Li, Wei Cong, Amirhossein Hakamivala, YiHui Huang, Joseph Borrelli, Liping Tang
Osteoarthritis is typically caused by cartilage injury, followed by localized inflammatory responses and tissue deterioration. Early treatment of osteoarthritis is often impossible due to the lack of diagnostic options. Recent studies have supported that different imaging probes can be used for arthritis detection in mice. However, none of these diagnostic tools have been tested on human articular cartilage. To fill this gap, an optical imaging probe was developed to target activated macrophages and the accumulation of imaging probes on tissue was used to assess the severity of human osteoarthritis...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/30148051/targeting-somatostatin-receptors-by-functionalized-mesoporous-silica-nanoparticles-are-we-striking-home
#2
Valeriy M Paramonov, Diti Desai, Helene Kettiger, Veronika Mamaeva, Jessica M Rosenholm, Cecilia Sahlgren, Adolfo Rivero-Müller
The concept of delivering nanoformulations to desired tissues by means of targeting membrane receptors of high local abundance by ligands anchored to the nanocarrier has gained a lot of attention over the last decade. Currently, there is no unanimous opinion on whether surface functionalization of nanocarriers by targeting ligands translates into any real benefit in terms of pharmacokinetics or treatment outcomes. Having examined the published nanocarriers designed to engage with somatostatin receptors, we realized that in the majority of cases targetability claims were not supported by solid evidence of targeting ligand-targeted receptor coupling, which is the very crux of a targetability concept...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29977742/ferumoxytol-based-dual-modality-imaging-probe-for-detection-of-stem-cell-transplant-rejection
#3
Kai Li, Carmel T Chan, Hossein Nejadnik, Olga D Lenkov, Cody Wolterman, Ramasamy Paulmurugan, Huaxiao Yang, Sanjiv Sam Gambhir, Heike E Daldrup-Link
Purpose: Stem cell transplants are an effective approach to repair large bone defects. However, comprehensive techniques to monitor the fate of transplanted stem cells in vivo are lacking. Such strategies would enable corrective interventions at an early stage and greatly benefit the development of more successful tissue regeneration approaches. In this study, we designed and synthesized a dual-modality imaging probe (Feru-AFC) that can simultaneously localize transplanted stem cells and diagnose immune rejection-induced apoptosis at an early stage in vivo ...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29977741/near-infrared-activated-release-of-doxorubicin-from-plasmon-resonant-liposomes
#4
Shellie S Knights-Mitchell, Marek Romanowski
Precise control of drug release from nanoparticles can improve efficacy and reduce systemic toxicity associated with administration of certain medications. Here, we combined two phenomena, photothermal conversion in plasmon resonant gold coating and thermal sensitivity of liposome compositions, to achieve a drug delivery system that rapidly releases doxorubicin in response to external stimulus. Methods: Thermosensitive liposomes were loaded with doxorubicin and gold-coated to produce plasmon resonant drug delivery system...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29977740/haase-sensitive-dual-targeting-irinotecan-liposomes-enhance-the-therapeutic-efficacy-of-lung-cancer-in-animals
#5
Liang Zhang, Haixin Cui
Among all cancers, lung cancer is one of the most common and serious types of cancer. It is challenging for site-specific delivery of anticancer therapeutics to tumor cells. Herein, we developed a novel"smart" dual-targeting liposomal platform to respond to the highly expressed hyaluronidase (HAase) in the tumor microenvironment and improve tumor targeting and antitumor efficacy. Methods: In our design, the HA was used as a sensitive linker between a liposomal lipid and long chain PEG block to synthesize three functional conjugates in order to prepare"smart" liposomal platform modified with epidermal growth factor receptor (EGFR) antibody (GE11) and cell-penetrating peptide (TATp)...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29977739/genome-wide-transcriptional-analysis-of-oxidative-stress-related-genes-and-pathways-induced-by-cdte-aqqds-in-mice
#6
Ling Kong, Jiayi Li, Jilong Wang, Yue Hu, Peijun Meng, Yamin Xiong, Peili Huang
Objective: Quantum dots (QDs) has widely applied in the field of science, whose potential toxic effect has increasingly become a focus concern we need pay attention to in public health. The purpose of this article was to explore the toxicity mechanism with oxidative damage from treatment with QDs at the molecular level through a gene microarray. Methods: Mice were administered aqueously synthesized cadmium telluride QDs (CdTe aqQDs) via intravenous tail injection of a 2 µmol/kg solution (based on the molar mass of Cd), and their kidneys were collected at 1 day in strict accordance with the programs used for treated mice...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29911001/passing-the-baton-from-the-editor-in-chief
#7
EDITORIAL
Moritz F Kircher
No abstract text is available yet for this article.
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29868350/clinically-applicable-perfluorocarbon-loaded-nanoparticles-for-in-vivo-photoacoustic-19-f-magnetic-resonance-and-fluorescent-imaging
#8
Edyta Swider, Khalid Daoudi, Alexander H J Staal, Olga Koshkina, N Koen van Riessen, Eric van Dinther, I Jolanda M de Vries, Chris L de Korte, Mangala Srinivas
Photoacoustic imaging (PAI) is an emerging biomedical imaging technique that is now coming to the clinic. It has a penetration depth of a few centimeters and generates useful endogenous contrast, particularly from melanin and oxy-/deoxyhemoglobin. Indocyanine green (ICG) is a Food and Drug Administration-approved contrast agents for human applications, which can be also used in PAI. It is a small molecule dye with limited applications due to its fast clearance, rapid protein binding, and bleaching effect. Methods: Here, we entrap ICG in a poly(lactic- co -glycolic acid) nanoparticles together with a perfluorocarbon (PFC) using single emulsion method...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29868349/nd-3-sensitized-core-shell-shell-nanocomposites-loaded-with-ir806-dye-for-photothermal-therapy-and-up-conversion-luminescence-imaging-by-a-single-wavelength-nir-light-irradiation
#9
Syue-Liang Lin, Zi-Rong Chen, C Allen Chang
To perform photothermal therapy (PTT) and luminescence imaging by a single wavelength NIR light irradiation, we have designed and prepared a novel nanocomposite incorporating the IR806 photothermal sensitizers (PTS) into the core-shell-shell NaYF4 :Yb,Er@ NaYF4 :Yb@NaYF4 :Yb,Nd up-conversion nanoparticles (UCNPs). Irradiation with the 793 nm near-infrared (NIR) laser, the Nd3+ ions in the UCNPs were sensitized to up-convert energy via Yb3+ to the Er3+ ions to emit visible light at 540 nm and 654 nm, as well as to down-convert energy to the Yb3+ ions to emit NIR light at 980 nm...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29868348/multifunctional-magnetic-mesoporous-silica-nanoagents-for-in-vivo-enzyme-responsive-drug-delivery-and-mr-imaging
#10
Erdong Li, Yanmei Yang, Guangyu Hao, Xuan Yi, Shaohua Zhang, Yue Pan, Bengang Xing, Mingyuan Gao
In this study, we report novel multifunctional nanoagents for in vivo enzyme-responsive anticancer drug delivery and magnetic resonance imaging (MRI), based on mesoporous silica coated iron oxide nanoparticles (Fe3 O4 @MSNs). The anticancer drug, DOX, was encapsulated in the porous cavities with a MMP-2 enzyme responsive peptide being covalently linked to the nanoparticles surface. The in vitro experiment results indicated that the enzyme responsive nanoagents own high specificity for controlled drug release in the cell line with high MMP-2 expression...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29868347/bio-transformation-of-graphene-oxide-in-lung-fluids-significantly-enhances-its-photothermal-efficacy
#11
Yun Liu, Yu Qi, Chunyang Yin, Shunhao Wang, Shuping Zhang, An Xu, Wei Chen, Sijin Liu
Rationale: Graphene oxide (GO) has shown great promises in biomedical applications, such as drug delivery and thermotherapeutics, owing to its extraordinary physicochemical properties. Nonetheless, current biomedical applications of GO materials are premised on the basis of predesigned functions, and little consideration has been given to the influence of bio-transformation in the physiological environment on the physicochemical properties and predesigned functionalities of these materials. Hence, it is crucial to uncover the possible influence on GO's physicochemical properties and predesigned functionalities for better applications...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29868346/tumor-theranostics-of-transition-metal-ions-loaded-polyaminopyrrole-nanoparticles
#12
Shuyao Li, Shuwei Liu, Lu Wang, Min Lin, Rui Ge, Xing Li, Xue Zhang, Yi Liu, Lening Zhang, Hongchen Sun, Hao Zhang, Bai Yang
Polypyrrole (PPy) nanoparticles (NPs) possess high near-infrared absorption and good biosafety, showing the potentials as photothermal therapeutic materials. However, the single function and the weak diagnostic function limit the further combination with other functional units to achieve theranostics. In this work, polyaminopyrrole (PPy-NH2 ) is demonstrated as the alternative of PPy for preparing NPs. Because of the amino group, metal ions, such as Cu(II) and Fe(III) can be loaded in PPy-NH2 NPs, which extends the applications in multimodal theranostics...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29868345/non-invasive-early-response-monitoring-of-nanoparticle-assisted-photothermal-cancer-therapy-using-18-f-fdg-18-f-flt-and-18-f-fet-pet-ct-imaging
#13
Jesper Tranekjær Jørgensen, Kamilla Norregaard, Marina Simón Martín, Lene Broeng Oddershede, Andreas Kjaer
Rationale: Since its first implementation nanoparticle-assisted photothermal cancer therapy has been studied extensively, although mainly with focus on optimal nanoparticle design. However, development of efficient treatment protocols, as well as reliable and early evaluation tools in vivo , are needed to push the therapy towards clinical translation. Positron emission tomography (PET) is a non-invasive imaging technique that is currently finding extensive use for early evaluation of cancer therapies; an approach that has become of increasing interest due to its great potential for personalized medicine...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577022/writing-a-review-article-are-you-making-these-mistakes
#14
Heike E Daldrup-Link
An explosion of scientific publications over the last decades has increased the need for review articles: Carefully crafted scientific review articles can provide the novice reader with an overview of a new subject and provide the expert with a synthesis of scientific evidence, proof of reproducibility of published data and pooled estimates of common truth through meta-analyses. Unfortunately, while there are ample presentations and published guidelines for the preparation of scientific articles available, detailed information about how to properly prepare scientific review articles is relatively scarce...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577021/penicillin-detection-by-tobacco-mosaic-virus-assisted-colorimetric-biosensors
#15
Claudia Koch, Arshak Poghossian, Michael J Schöning, Christina Wege
The presentation of enzymes on viral scaffolds has beneficial effects such as an increased enzyme loading and a prolonged reusability in comparison to conventional immobilization platforms. Here, we used modified tobacco mosaic virus (TMV) nanorods as enzyme carriers in penicillin G detection for the first time. Penicillinase enzymes were conjugated with streptavidin and coupled to TMV rods by use of a bifunctional biotin-linker. Penicillinase-decorated TMV particles were characterized extensively in halochromic dye-based biosensing...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577020/functionalised-carbon-nanotubes-enhance-brain-delivery-of-amyloid-targeting-pittsburgh-compound-b-pib-derived-ligands
#16
Pedro Miguel Costa, Julie Tzu-Wen Wang, Jean-François Morfin, Tamanna Khanum, Wan To, Jane Sosabowski, Eva Tóth, Khuloud T Al-Jamal
Alzheimer's disease (AD) is a neurodegenerative disorder characterised by brain accumulation of toxic protein aggregates, including extracellular amyloid beta (Aβ) plaques, inflammation, neuronal death and progressive cognitive dysfunction. Current diagnostic modalities, based on cognitive tests, fail to detect early AD onset, thus emphasising the need to develop improved methods for pre-symptomatic disease detection. Building on the properties of the Pittsburgh Compound B (PiB), an Aβ-binding molecule suitable to use as positron emission tomography (PET) imaging agent, and aiming at using a more clinically available modality (like magnetic ressonance imaging, MRI), PiB derivatives have been conjugated to the macrocyclic chelator 1,4,7-tris(carboxymethyl)-1,4,7,10-tetraazacyclododecane (DO3A) monoamide...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577019/fabrication-of-positively-charged-fluorescent-polymer-nanoparticles-for-cell-imaging-and-gene-delivery
#17
Lin Wei, Di Zhang, Xuanfang Zheng, Xuyao Zeng, Youlin Zeng, Xinbo Shi, Xin Su, Lehui Xiao
Development of efficient non-viral gene delivery vector has aroused great attention in the past few decades. In this study, we reported a new gene delivery vector, positively charged fluorescent conjugated polymer nanoparticles (CPNPs), for efficient gene transfection and in-situ intracellular fluorescence imaging. The microscopic and spectroscopic characterizations demonstrated that these CPNPs possess decent fluorescence performance (e.g. with fluorescence quantum yield of 70.7±0.3%) and small size dimension of ~3...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577018/ternary-aligned-nanofibers-of-rgd-peptide-displaying-m13-bacteriophage-plga-graphene-oxide-for-facilitated-myogenesis
#18
Yong Cheol Shin, Chuntae Kim, Su-Jin Song, Seungwon Jun, Chang-Seok Kim, Suck Won Hong, Suong-Hyu Hyon, Dong-Wook Han, Jin-Woo Oh
Recently, there have been tremendous efforts to develop the biofunctional scaffolds by incorporating various biochemical factors. In the present study, we fabricated poly(lactic- co -glycolic acid) (PLGA) nanofiber sheets decorated with graphene oxide (GO) and RGD peptide. The decoration of GO and RGD peptide was readily achieved by using RGD peptide-displaying M13 bacteriophage (RGD-M13 phage) and electrospinning. Furthermore, the aligned GO-decorated PLGA/RGD peptide (GO-PLGA/RGD) ternary nanofiber sheets were prepared by magnetic field-assisted electrospinning, and their potentials as bifunctional scaffolds for facilitating myogenesis were explored...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577017/high-density-human-mesenchymal-stem-cell-rings-with-spatiotemporally-controlled-morphogen-presentation-as-building-blocks-for-engineering-bone-diaphyseal-tissue
#19
Samuel Herberg, Daniel Varghai, Yuxuan Cheng, Anna D Dikina, Phuong N Dang, Marsha W Rolle, Eben Alsberg
Emerging biomimetic tissue engineering strategies aim to partially recapitulate fundamental events that transpire during embryonic skeletal development; namely, cellular self-organization and targeted morphogenetic pathway activation. Here, we describe self-assembled, scaffold-free human mesenchymal stem cell (hMSC) rings featuring microparticle-mediated presentation of transforming growth factor-β1 (TGF-β1) and bone morphogenetic protein-2 (BMP-2). We tested the hypothesis that spatiotemporally-controlled dual presentation of TGF-β1 and BMP-2 is superior in modulating in vitro endochondral ossification of high-density cellular constructs compared to single morphogen delivery...
2018: Nanotheranostics
https://www.readbyqxmd.com/read/29577016/iodinated-echogenic-glycol-chitosan-nanoparticles-for-x-ray-ct-us-dual-imaging-of-tumor
#20
Daeil Choi, Sangmin Jeon, Dong Gil You, Wooram Um, Jeong-Yeon Kim, Hong Yeol Yoon, Hyeyoun Chang, Dong-Eog Kim, Jae Hyung Park, Hyuncheol Kim, Kwangmeyung Kim
Development of biopolymer-based imaging agents which can access rapidly and provide detailed information about the diseases has received much attention as an alternative to conventional imaging agents. However, development of biopolymer-based nanomaterials for tumor imaging still remains challenging due to their low sensitivity and image resolution. To surmount of these limitations, multimodal imaging agents have been developed, and they were widely utilized for theranostic applications. Herein, iodine containing echogenic glycol chitosan nanoparticles are developed for x-ray computed tomography (CT) and ultrasound (US) imaging of tumor diagnosis...
2018: Nanotheranostics
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