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Yang Y, Jiang Q, Zhang F. Nanocrystals for Deep-Tissue In Vivo Luminescence Imaging in the Near-Infrared Region. Chem Rev 2024; 124:554-628. [PMID: 37991799 DOI: 10.1021/acs.chemrev.3c00506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
In vivo imaging technologies have emerged as a powerful tool for both fundamental research and clinical practice. In particular, luminescence imaging in the tissue-transparent near-infrared (NIR, 700-1700 nm) region offers tremendous potential for visualizing biological architectures and pathophysiological events in living subjects with deep tissue penetration and high imaging contrast owing to the reduced light-tissue interactions of absorption, scattering, and autofluorescence. The distinctive quantum effects of nanocrystals have been harnessed to achieve exceptional photophysical properties, establishing them as a promising category of luminescent probes. In this comprehensive review, the interactions between light and biological tissues, as well as the advantages of NIR light for in vivo luminescence imaging, are initially elaborated. Subsequently, we focus on achieving deep tissue penetration and improved imaging contrast by optimizing the performance of nanocrystal fluorophores. The ingenious design strategies of NIR nanocrystal probes are discussed, along with their respective biomedical applications in versatile in vivo luminescence imaging modalities. Finally, thought-provoking reflections on the challenges and prospects for future clinical translation of nanocrystal-based in vivo luminescence imaging in the NIR region are wisely provided.
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Affiliation(s)
- Yang Yang
- College of Energy Materials and Chemistry, State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010021, China
| | - Qunying Jiang
- College of Energy Materials and Chemistry, State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010021, China
| | - Fan Zhang
- College of Energy Materials and Chemistry, State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, Inner Mongolia University, Hohhot 010021, China
- Department of Chemistry, State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China
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2
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Liu F, Chen S, Zou Y, Jiao Y, Tang Y. A simple and efficient fluorescent labeling method in Staphylococcus aureus for real-time tracking of invasive bacteria. Front Microbiol 2023; 14:1128638. [PMID: 36846783 PMCID: PMC9950555 DOI: 10.3389/fmicb.2023.1128638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/24/2023] [Indexed: 02/12/2023] Open
Abstract
Bacterial fluorescent labeling is a powerful tool for the diagnosis and treatment of bacterial infections. Here, we present a simple and efficient labeling strategy for Staphylococcus aureus. Intracellular labeling of bacteria was achieved by heat shock using Cyanine 5.5 (Cy5.5) near-infrared-I dyes in S. aureus (Cy5.5@S. aureus). Several key factors, such as Cy5.5 concentration and labeling time, were systematically evaluated. Further, the cytotoxicity of Cy5.5 and the stability of Cy5.5@S. aureus was evaluated by flow cytometry, inverted fluorescence microscopy, and transmission electron microscopy. In addition, Cy5.5@S. aureus were used to explore the phagocytic behavior of RAW264.7 macrophages. These results proved that Cy5.5@S. aureus had a uniform fluorescence intensity and high luminance; additionally, our method had no significant adverse effects on S. aureus compared to unlabeled S. aureus infections. Our method provides researchers with a useful option for analyzing the behavior of S. aureus as an infectious agent. This technique can be broadly applied to study host cell-bacteria interactions at the molecular level, and to in vivo tracing of bacterial infections.
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Affiliation(s)
- Fei Liu
- Naval Medical Center, Naval Medical University, Shanghai, China
| | - Sijie Chen
- Department of Nursing, The 940th Hospital of Joint Logistic Support Force of People’s Liberation Army (PLA), Lanzhou, China
| | - Yingxin Zou
- Naval Medical Center, Naval Medical University, Shanghai, China
| | - Yong Jiao
- Naval Medical Center, Naval Medical University, Shanghai, China
| | - Ying Tang
- Naval Medical Center, Naval Medical University, Shanghai, China,*Correspondence: Ying Tang,
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Towards a Whole Sample Imaging Approach Using Diffusion Tensor Imaging to Examine the Foreign Body Response to Explanted Medical Devices. Polymers (Basel) 2022; 14:polym14224819. [PMID: 36432947 PMCID: PMC9698821 DOI: 10.3390/polym14224819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 10/31/2022] [Accepted: 11/02/2022] [Indexed: 11/12/2022] Open
Abstract
Analysing the composition and organisation of the fibrous capsule formed as a result of the Foreign Body Response (FBR) to medical devices, is imperative for medical device improvement and biocompatibility. Typically, analysis is performed using histological techniques which often involve random sampling strategies. This method is excellent for acquiring representative values but can miss the unique spatial distribution of features in 3D, especially when analysing devices used in large animal studies. To overcome this limitation, we demonstrate a non-destructive method for high-resolution large sample imaging of the fibrous capsule surrounding human-sized implanted devices using diffusion tensor imaging (DTI). In this study we analyse the fibrous capsule surrounding two unique macroencapsulation devices that have been implanted in a porcine model for 21 days. DTI is used for 3D visualisation of the microstructural organisation and validated using the standard means of fibrous capsule investigation; histological analysis and qualitative micro computed tomography (microCT) and scanning electron microscopy (SEM) imaging. DTI demonstrated the ability to distinguish microstructural differences in the fibrous capsules surrounding two macroencapsulation devices made from different materials and with different surface topographies. DTI-derived metrics yielded insight into the microstructural organisation of both capsules which was corroborated by microCT, SEM and histology. The non-invasive characterisation of the integration of implants in the body has the potential to positively influence analysis methods in pre-clinical studies and accelerate the clinical translation of novel implantable devices.
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Papachristou M, Priftakis D, Xanthopoulos S, Datseris I, Bouziotis P. Biodistribution of intravenous [ 99mTc]Tc-phytate in mouse models of chemically and foreign-body induced sterile inflammation. AMERICAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING 2022; 12:91-98. [PMID: 35874295 PMCID: PMC9301090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 06/05/2022] [Indexed: 06/15/2023]
Abstract
When injected intravenously, [99mTc]Tc-phytate forms particles in the nanometer range. This size can favor its extravasation into tumor and inflammation through pores of the vasculature. The aim of this work is the evaluation of the use of [99mTc]Tc-phytate to assess sterile inflammation in mouse models. Biodistribution studies of [99mTc]Tc-phytate were performed in two groups of male Swiss Albino mice. Sterile inflammation was induced after intramuscular injection of turpentine in the first group (chemically induced sterile inflammation model) and after implantation of sterile metal bolts in the second group (foreign-body induced sterile inflammation model). [99mTc]Tc-phytate was intravenously injected after the development of inflammation in both groups and ex vivo biodistribution of the radiolabelled complex followed at different time-points. Biodistribution was expressed as percent injected dose per gram (%ID/g). Target-to-background ratios were also recorded. For the chemically induced sterile inflammation model, ex vivo biodistribution evaluation measurements revealed a pronounced uptake in the inflamed muscle when compared to uptake in the control/non-inflamed muscle. Moreover, as expected, there is a high uptake in the liver and spleen. For the foreign-body induced sterile inflammation model, a significantly higher uptake was observed in the inflamed muscle post [99mTc]Tc-phytate injection, both for the 24 hours post-bolt implantation and for the 7 days post-bolt implantation groups. The nanoparticle properties of [99mTc]Tc-phytate are potentially useful in the imaging of different types of sterile inflammation with translational potential clinical SPECT (single photon emission computed tomography) imaging applications in humans.
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Affiliation(s)
- Maria Papachristou
- Nuclear Medicine and PET/CT Department, General Hospital of Athens “Evaggelismos”Athens, Greece
| | - Dimitrios Priftakis
- Institute of Nuclear Medicine, University College London HospitalLondon, United Kingdom
| | - Stavros Xanthopoulos
- Radiochemical Studies Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research “Demokritos”Athens, Greece
| | - Ioannis Datseris
- Nuclear Medicine and PET/CT Department, General Hospital of Athens “Evaggelismos”Athens, Greece
| | - Penelope Bouziotis
- Radiochemical Studies Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research “Demokritos”Athens, Greece
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Pei P, Hu H, Chen Y, Wang S, Chen J, Ming J, Yang Y, Sun C, Zhao S, Zhang F. NIR-II Ratiometric Lanthanide-Dye Hybrid Nanoprobes Doped Bioscaffolds for In Situ Bone Repair Monitoring. NANO LETTERS 2022; 22:783-791. [PMID: 35005958 DOI: 10.1021/acs.nanolett.1c04356] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In situ monitoring of tissue regeneration progression is of primary importance to basic medical research and clinical transformation. Despite significant progress in the field of tissue engineering and regenerative medicine, few technologies have been established to in situ inspect the regenerative process. Here, we present an integrated second near-infrared (NIR-II, 1000-1700 nm) window in vivo imaging strategy based on 3D-printed bioactive glass scaffolds doped with NIR-II ratiometric lanthanide-dye hybrid nanoprobes, allowing for in situ monitoring of the early inflammation, angiogenesis, and implant degradation during mouse skull repair. The functional bioactive glass scaffolds contribute to more effective bone regeneration because of their excellent angiogenic and osteogenic activities. The reliability of ratiometric fluorescence imaging, coupled with low autofluoresence in the NIR-II window, facilitates the accuracy of in vivo inflammation detection and high-resolution visualization of neovascularization and implant degradation in deep tissue.
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Affiliation(s)
- Peng Pei
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
| | - Hongxing Hu
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Ying Chen
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
| | - Shangfeng Wang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
| | - Jing Chen
- Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Jiang Ming
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
| | - Yiwei Yang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
| | - Caixia Sun
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
| | - Shichang Zhao
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiaotong University, Shanghai 200233, China
| | - Fan Zhang
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Molecular Engineering of Polymers and iChem, Fudan University, Shanghai 200433, China
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Zhao J, Zhang Q, Wang J, Zhang Q, Li H, Du Y. Advances in the Scavenging Materials for Reactive Oxygen Species. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a21120586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Van Buiten CB, Wu G, Lam YY, Zhao L, Raskin I. Elemental iron modifies the redox environment of the gastrointestinal tract: A novel therapeutic target and test for metabolic syndrome. Free Radic Biol Med 2021; 168:203-213. [PMID: 33831549 PMCID: PMC8544024 DOI: 10.1016/j.freeradbiomed.2021.03.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/25/2021] [Accepted: 03/24/2021] [Indexed: 12/21/2022]
Abstract
Metabolic syndrome (MetS, i.e., type 2 diabetes and obesity) is often associated with dysbiosis, inflammation, and leaky gut syndrome, which increase the content of oxygen and reactive oxygen species (ROS) in the gastrointestinal (GI) tract. Using near-infrared fluorescent, in situ imaging of ROS, we evaluated the effects of oral administration of elemental iron powder (Fe0) on luminal ROS in the GI tract and related these changes to glucose metabolism and the gut microbiome. C57Bl/6J mice fed low-fat or high-fat diets and gavaged with Fe0 (2.5 g per kg), in both single- and repeat-doses, demonstrated decreased levels of luminal ROS. Fourteen days of repeated Fe0 administration reduced hyperglycemia and improved glucose tolerance in the obese and hyperglycemic animals compared to the untreated obese controls and reduced the relative amount of iron oxides in the feces, which indicated an increased redox environment of the GI tract. We determined that Fe0 administration can also be used as a diagnostic assay to assess the GI microenvironment. Improved metabolic outcomes and decreased gastrointestinal ROS in Fe0-treated, high-fat diet-fed animals correlated with the increase in a co-abundance group of beneficial bacteria, including Lactobacillus, and the suppression of detrimental populations, including Oscillibacter, Peptococcus, and Intestinimonas. Daily Fe0 treatment also increased the relative abundance of amplicon sequence variants that lacked functional enzymatic antioxidant systems, which is consistent with the ability of Fe0 to scavenge ROS and oxygen in the GI, thus favoring the growth of oxygen-sensitive bacteria. These findings delineate a functional role for antioxidants in modification of the GI microenvironment and subsequent reversal of metabolic dysfunction.
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Affiliation(s)
- Charlene B Van Buiten
- Department of Food Science and Human Nutrition, College of Health and Human Sciences, Colorado State University, Fort Collins, CO, 80525, USA; Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA.
| | - Guojun Wu
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA; Center for Microbiome, Nutrition and Health, New Jersey Institute for Food, Nutrition and Health, Rutgers University, New Brunswick, NJ, 80901, USA
| | - Yan Y Lam
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA; Center for Microbiome, Nutrition and Health, New Jersey Institute for Food, Nutrition and Health, Rutgers University, New Brunswick, NJ, 80901, USA
| | - Liping Zhao
- Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA; Center for Microbiome, Nutrition and Health, New Jersey Institute for Food, Nutrition and Health, Rutgers University, New Brunswick, NJ, 80901, USA
| | - Ilya Raskin
- Department of Plant Biology, School of Environmental and Biological Sciences, Rutgers University, New Brunswick, NJ, 08901, USA
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Nguyen DT, Soeranaya BHT, Truong THA, Dang TT. Modular design of a hybrid hydrogel for protease-triggered enhancement of drug delivery to regulate TNF-α production by pro-inflammatory macrophages. Acta Biomater 2020; 117:167-179. [PMID: 32977069 DOI: 10.1016/j.actbio.2020.09.026] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/28/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023]
Abstract
Systemic drug administration has conventionally been prescribed to alleviate persistent local inflammation which is prevalent in chronic diseases. However, this approach is associated with drug-induced toxicity, particularly when the dosage exceeds that necessitated by pathological conditions of diseased tissues. Herein, we developed a modular hybrid hydrogel which could be triggered to release an anti-inflammatory drug upon exposure to elevated protease activity associated with inflammatory diseases. Modular design of the hybrid hydrogel enabled independent optimization of its protease-cleavable and drug-loaded subdomains to facilitate hydrogel formation, cleavability by matrix-metalloprotease-9 (MMP-9), and tuning drug release rate. In vitro study demonstrated the protease-triggered enhancement of drug release from the hybrid hydrogel system for effective inhibition of TNF-α production by pro-inflammatory macrophages and suggested its potential to mitigate drug-induced cytotoxicity. Using non-invasive imaging to monitor the activity of reactive oxygen species in biomaterial-induced host response, we confirmed that the hybrid hydrogel and its constituent materials did not induce adverse immune response after 5 days following their subcutaneous injection in immuno-competent mice. We subsequently incorporated this hybrid hydrogel onto a commercial wound dressing which could release the drug upon exposure to MMP-9. Together, our findings suggested that this hybrid hydrogel might be a versatile platform for on-demand drug delivery via either injectable or topical application to modulate inflammation in chronic diseases.
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Bhatia SK, Wadhwa P, Hong JW, Hong YG, Jeon JM, Lee ES, Yang YH. Lipase mediated functionalization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) with ascorbic acid into an antioxidant active biomaterial. Int J Biol Macromol 2019; 123:117-123. [DOI: 10.1016/j.ijbiomac.2018.11.052] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 11/06/2018] [Accepted: 11/10/2018] [Indexed: 01/01/2023]
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Kuhn P, Kalariya HM, Poulev A, Ribnicky DM, Jaja-Chimedza A, Roopchand DE, Raskin I. Grape polyphenols reduce gut-localized reactive oxygen species associated with the development of metabolic syndrome in mice. PLoS One 2018; 13:e0198716. [PMID: 30308002 PMCID: PMC6181265 DOI: 10.1371/journal.pone.0198716] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023] Open
Abstract
High-fat diet (HFD)-induced leaky gut syndrome combined with low-grade inflammation increase reactive oxygen species (ROS) in the intestine and may contribute to dysbiosis and metabolic syndrome (MetS). Poorly bioavailable and only partially metabolizable dietary polyphenols, such as proanthocyanidins (PACs), may exert their beneficial effects on metabolic health by scavenging intestinal ROS. To test this hypothesis, we developed and validated a novel, noninvasive, in situ method for visualizing intestinal ROS using orally administered ROS-sensitive indocyanine green (ICG) dye. C57BL/6J mice fed HFD for 10 weeks accumulated high levels of intestinal ROS compared to mice fed low-fat diet (LFD). Oral administration of poorly bioavailable grape polyphenol extract (GPE) and β-carotene decreased HFD-induced ROS in the gut to levels comparable to LFD-fed mice, while administration of more bioavailable dietary antioxidants (α-lipoic acid, vitamin C, vitamin E) did not. Forty percent of administered GPE antioxidant activity was measured in feces collected over 24 h, confirming poor bioavailability and persistence in the gut. The bloom of beneficial anaerobic gut bacteria, such as Akkermansia muciniphila, associated with improved metabolic status in rodents and humans may be directly linked to protective antioxidant activity of some dietary components. These findings suggest a possible mechanistic explanation for the beneficial effects of poorly bioavailable polyphenols on metabolic health.
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Affiliation(s)
- Peter Kuhn
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, New Brunswick, NJ, United States of America
| | - Hetalben M. Kalariya
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, New Brunswick, NJ, United States of America
| | - Alexander Poulev
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, New Brunswick, NJ, United States of America
| | - David M. Ribnicky
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, New Brunswick, NJ, United States of America
| | - Asha Jaja-Chimedza
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, New Brunswick, NJ, United States of America
| | - Diana E. Roopchand
- Rutgers, The State University of New Jersey, Department of Food Science, Institute for Food Nutrition and Health, Center for Digestive Health, New Brunswick, NJ, United States of America
| | - Ilya Raskin
- Rutgers, The State University of New Jersey, Department of Plant Biology, Foran Hall, New Brunswick, NJ, United States of America
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Dzhonova D, Olariu R, Leckenby J, Dhayani A, Vemula PK, Prost JC, Banz Y, Taddeo A, Rieben R. Local release of tacrolimus from hydrogel-based drug delivery system is controlled by inflammatory enzymes in vivo and can be monitored non-invasively using in vivo imaging. PLoS One 2018; 13:e0203409. [PMID: 30161258 PMCID: PMC6117083 DOI: 10.1371/journal.pone.0203409] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 08/20/2018] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Local drug delivery systems that adjust the release of immunosuppressive drug in response to the nature and intensity of inflammation represent a promising approach to reduce systemic immunosuppression and its side effects in allotransplantation. Here we aimed to demonstrate that release of tacrolimus from triglycerol monostearate hydrogel is inflammation-dependent in vivo. We further report that by loading the hydrogel with a near-infrared dye, it is possible to monitor drug release non-invasively in an in vivo model of vascularized composite allotransplantation. MATERIALS AND METHODS Inflammation was induced by local challenge with lipopolysaccharides in naïve rats 7 days after injection of tacrolimus-loaded hydrogel in the hind limb. Tacrolimus levels in blood and tissues were measured at selected time points. A near-infrared dye was encapsulated in the hydrogel together with tacrolimus in order to monitor hydrogel deposits and drug release in vitro and in vivo in a model of vascularized composite allotransplantation. RESULTS Injection of lipopolysaccharides led to increased blood and skin tacrolimus levels (p = 0.0076, day 7 vs. day 12 in blood, and p = 0.0007 in treated limbs, 48 h after injection compared to controls). Moreover, lipopolysaccharides-injected animals had higher tacrolimus levels in treated limbs compared to contralateral limbs (p = 0.0003 for skin and p = 0.0053 for muscle). Imaging of hydrogel deposits and tacrolimus release was achieved by encapsulating near-infrared dye in the hydrogel for 160 days. The correlation of tacrolimus and near-infrared dye release from hydrogel was R2 = 0.6297 and R2 = 0.5619 in blood and grafts of transplanted animals respectively and R2 = 0.6066 in vitro. CONCLUSIONS Here we demonstrate the inflammation-responsiveness of a tacrolimus-loaded hydrogel in vivo. Moreover, we show that encapsulating a near-infrared dye in the hydrogel provides a reliable correlation of tacrolimus and dye release from the hydrogel, and an accessible non-invasive method for monitoring drug release from hydrogel deposits.
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Affiliation(s)
- Dzhuliya Dzhonova
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Radu Olariu
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Jonathan Leckenby
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Ashish Dhayani
- Institute for Stem Cell Biology and Regenerative Medicine, Bangalore, India
- The School of Chemical and Biotechnology, SASTRA University, Tamil Nadu, India
| | | | - Jean-Christophe Prost
- Center of Laboratory Medicine, University Institute of Clinical Chemistry, University Hospital, Switzerland
| | - Yara Banz
- Institute of Pathology, University of Bern, Bern, Switzerland
| | - Adriano Taddeo
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Robert Rieben
- Department for BioMedical Research (DBMR), University of Bern, Bern, Switzerland
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Yang A, Dong X, Liang J, Zhang Y, Yang W, Liu T, Yang J, Kong D, Lv F. Photothermally triggered disassembly of a visible dual fluorescent poly(ethylene glycol)/α-cyclodextrin hydrogel. SOFT MATTER 2018; 14:4495-4504. [PMID: 29808187 DOI: 10.1039/c8sm00626a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The real-time tracking and adjustment of the disassembly and status of hydrogels in vivo are important challenges to accurate and precise assessment. In this article, a photothermally controllable, visible, dual fluorescent thermosensitive hydrogel was designed and developed based on a porphyrin-poly(ethylene glycol)/IR-820-α-cyclodextrin hydrogel. Due to the photothermal effect and fluorescence emission of IR-820, it can exert the dual functions of photothermal control and fluorescence imaging tracking. The IR-820 conjugated hydrogel can regulate the hydrogel disassembly by the photothermal effect of IR-820. Furthermore, each component of the hydrogel can be tracked by the fluorescence of IR-820 and porphyrin. Fluorescence imaging tracking and remote photothermal control were merged into the visible and controlled hydrogel disassembly after subcutaneous injection using mice as models. The dual fluorescence imaging visualization of cyclodextrin/poly(ethylene glycol) hydrogels revealed the disassembly process by tracking each component, and the hydrogel disassembly can be efficiently accelerated under laser irradiation with the photothermal effect of IR-820. This affords an important basis for understanding the disassembly process of the poly(ethylene glycol)/α-cyclodextrin hydrogel.
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Affiliation(s)
- Afeng Yang
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, P. R. China.
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Kubon M, Hartmann H, Moschallski M, Burkhardt C, Link G, Werner S, Lavalle P, Urban G, Vrana NE, Stelzle M. Multimodal Chemosensor-Based, Real-Time Biomaterial/Cell Interface Monitoring. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/adbi.201700236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Massimo Kubon
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
| | - Hanna Hartmann
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
| | - Meike Moschallski
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
| | - Claus Burkhardt
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
| | - Gorden Link
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
| | - Simon Werner
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
| | - Philippe Lavalle
- Institut National de la Santé et de la Recherche Médicale; INSERM Unité 1121, 11 rue Humann 67085 Strasbourg Cedex France
- Fédération de Médecine Translationnelle de Strasbourg; Fédération de Recherche Matériaux et Nanosciences Grand Est (FRMNGE); Faculté de Chirurgie Dentaire; Université de Strasbourg; 67000 Strasbourg France
| | - Gerald Urban
- IMTEK - Institute for Microsystems Engineering; University of Freiburg; Georges-Köhler-Allee 103/EG D-79110 Freiburg Germany
| | - Nihal Engin Vrana
- Institut National de la Santé et de la Recherche Médicale; INSERM Unité 1121, 11 rue Humann 67085 Strasbourg Cedex France
- Protip Medical; 8 Place de l'Hopital, 67000 Strasbourg France
| | - Martin Stelzle
- NMI Natural and Medical Sciences Institute at the University of Tübingen; Markwiesenstrasse 55 D-72770 Reutlingen Germany
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Liu R, Zhang L, Chen Y, Huang Z, Huang Y, Zhao S. Design of a New Near-Infrared Ratiometric Fluorescent Nanoprobe for Real-Time Imaging of Superoxide Anions and Hydroxyl Radicals in Live Cells and in Situ Tracing of the Inflammation Process in Vivo. Anal Chem 2018. [DOI: 10.1021/acs.analchem.7b04488] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Rongjun Liu
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
- Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology, College of Chemistry and Food Science, Yulin Normal University, Yulin 537000, China
| | - Liangliang Zhang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
| | - Yunyun Chen
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
| | - Zirong Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
| | - Yong Huang
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
| | - Shulin Zhao
- State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, College of Chemistry and Pharmacy, Guangxi Normal University, Guilin 541004, China
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15
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Liang J, Dong X, Wei C, Ma G, Liu T, Kong D, Lv F. A visible and controllable porphyrin-poly(ethylene glycol)/α-cyclodextrin hydrogel nanocomposites system for photo response. Carbohydr Polym 2017; 175:440-449. [DOI: 10.1016/j.carbpol.2017.08.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2017] [Revised: 08/04/2017] [Accepted: 08/04/2017] [Indexed: 02/08/2023]
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16
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Liu C, Bae KH, Yamashita A, Chung JE, Kurisawa M. Thiol-Mediated Synthesis of Hyaluronic Acid–Epigallocatechin-3-O-Gallate Conjugates for the Formation of Injectable Hydrogels with Free Radical Scavenging Property and Degradation Resistance. Biomacromolecules 2017; 18:3143-3155. [DOI: 10.1021/acs.biomac.7b00788] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chixuan Liu
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Ki Hyun Bae
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Atsushi Yamashita
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Joo Eun Chung
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
| | - Motoichi Kurisawa
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos, Singapore 138669, Singapore
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17
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Dong X, Chen H, Qin J, Wei C, Liang J, Liu T, Kong D, Lv F. Thermosensitive porphyrin-incorporated hydrogel with four-arm PEG-PCL copolymer (II): doxorubicin loaded hydrogel as a dual fluorescent drug delivery system for simultaneous imaging tracking in vivo. Drug Deliv 2017; 24:641-650. [PMID: 28282993 PMCID: PMC8241078 DOI: 10.1080/10717544.2017.1289570] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Visualization of a drug delivery system could reveal the pharmacokinetic properties, which is essential for the design of a novel drug delivery system. In vivo optical imaging offers an advanced tool to monitor the drug release process and the therapeutic effect by the combination of fluorescence imaging and bioluminescence imaging. Multispectral fluorescence imaging can separate the drug and the carrier without interference. Herein, a dual fluorescent anti-tumor drug delivery system was monitored with the doxorubicin-loaded hydrogel to further explore the application of the porphyrin-incorporated hydrogel with four-arm PEG-PCL copolymer as a drug carrier, based on the beneficial fluorescence and good biocompatibility of the porphyrin incorporated hydrogel. Using nude mice bearing luciferase expressed hepatic tumor as models, the whole process from the drug delivery to the tumor therapeutic effects were real time visualized simultaneously after administration at interval from 0 to 18 d. The imaging results suggest that the fluorescence signals of the drug and the carrier can be separated and unmixed from the drug-loaded hydrogel successfully, avoiding the interference of the fluorescence signals. The tumor growth or inhibition can be real time tracked and analyzed quantitatively by bioluminescence imaging. Noninvasive continuous tracking the in vivo drug delivery process simultaneously is a potential trend for the precise drug delivery and treatment.
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Affiliation(s)
- Xia Dong
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , PR China and
| | - Hongli Chen
- b School of Life Science and Technology, Xinxiang Medical University , Xinxiang , Henan , PR China
| | - Jingwen Qin
- b School of Life Science and Technology, Xinxiang Medical University , Xinxiang , Henan , PR China
| | - Chang Wei
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , PR China and
| | - Jie Liang
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , PR China and
| | - Tianjun Liu
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , PR China and
| | - Deling Kong
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , PR China and
| | - Feng Lv
- a Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College , Tianjin , PR China and
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18
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Affiliation(s)
- Siddharth Jhunjhunwala
- Centre for BioSystems Science and Engineering, Indian Institute of Science, Bengaluru, India 560012
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19
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Mouthuy PA, Snelling SJ, Dakin SG, Milković L, Gašparović AČ, Carr AJ, Žarković N. Biocompatibility of implantable materials: An oxidative stress viewpoint. Biomaterials 2016; 109:55-68. [DOI: 10.1016/j.biomaterials.2016.09.010] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Revised: 09/06/2016] [Accepted: 09/13/2016] [Indexed: 12/13/2022]
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20
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Zhdanov AV, Aviello G, Knaus UG, Papkovsky DB. Cellular ROS imaging with hydro-Cy3 dye is strongly influenced by mitochondrial membrane potential. Biochim Biophys Acta Gen Subj 2016; 1861:198-204. [PMID: 27818165 DOI: 10.1016/j.bbagen.2016.10.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/14/2016] [Accepted: 10/27/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Hydrocyanines are widely used as fluorogenic probes to monitor reactive oxygen species (ROS) generation in cells. Their brightness, stability to autoxidation and photobleaching, large signal change upon oxidation, pH independence and red/near infrared emission are particularly attractive for imaging ROS in live tissue. METHODS Using confocal fluorescence microscopy we have examined an interference of mitochondrial membrane potential (ΔΨm) with fluorescence intensity and localisation of a commercial hydro-Cy3 probe in respiring and non-respiring colon carcinoma HCT116 cells. RESULTS We found that the oxidised (fluorescent) form of hydro-Cy3 is highly homologous to the common ΔΨm-sensitive probe JC-1, which accumulates and aggregates only in 'energised' negatively charged mitochondrial matrix. Therefore, hydro-Cy3 oxidised by hydroxyl and superoxide radicals tends to accumulate in mitochondrial matrix, but dissipates and loses brightness as soon as ΔΨm is compromised. Experiments with mitochondrial inhibitor oligomycin and uncoupler FCCP, as well as a common ROS producer paraquat demonstrated that signals of the oxidised hydro-Cy3 probe rapidly and strongly decrease upon mitochondrial depolarisation, regardless of the rate of cellular ROS production. CONCLUSIONS While analysing ROS-derived fluorescence of commercial hydrocyanine probes, an accurate control of ΔΨm is required. GENERAL SIGNIFICANCE If not accounted for, non-specific effect of mitochondrial polarisation state on the behaviour of oxidised hydrocyanines can cause artefacts and data misinterpretation in ROS studies.
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Affiliation(s)
- Alexander V Zhdanov
- School of Biochemistry & Cell Biology, University College Cork, Cork, Ireland.
| | - Gabriella Aviello
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland; University of Aberdeen, Aberdeen, UK
| | - Ulla G Knaus
- School of Medicine, Conway Institute, University College Dublin, Dublin, Ireland
| | - Dmitri B Papkovsky
- School of Biochemistry & Cell Biology, University College Cork, Cork, Ireland
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21
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Dong X, Wei C, Chen H, Qin J, Liang J, Kong D, Liu T, Lv F. Real-Time Imaging Tracking of a Dual Fluorescent Drug Delivery System Based on Zinc Phthalocyanine-Incorporated Hydrogel. ACS Biomater Sci Eng 2016; 2:2001-2010. [DOI: 10.1021/acsbiomaterials.6b00403] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Xia Dong
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Chang Wei
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Hongli Chen
- School
of Life Science and Technology, Xinxiang Medical University, Xinxiang, Henan, 453003, PR China
| | - Jingwen Qin
- School
of Life Science and Technology, Xinxiang Medical University, Xinxiang, Henan, 453003, PR China
| | - Jie Liang
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Deling Kong
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Tianjun Liu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
| | - Feng Lv
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300192, PR China
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22
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Song Z, Mao D, Sung SHP, Kwok RTK, Lam JWY, Kong D, Ding D, Tang BZ. Activatable Fluorescent Nanoprobe with Aggregation-Induced Emission Characteristics for Selective In Vivo Imaging of Elevated Peroxynitrite Generation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2016; 28:7249-56. [PMID: 27302869 DOI: 10.1002/adma.201601214] [Citation(s) in RCA: 140] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 04/20/2016] [Indexed: 05/05/2023]
Abstract
An activatable fluorescent nanoprobe with aggregation-induced emission signature is developed. The nanoprobe is nonfluorescent, but can be induced to emit intensely after reaction with peroxynitrite forming an intramolecular hydrogen bond. Excellent performance for selective in vivo imaging of inflammation with elevated peroxynitrite generation and efficient visualization of in vivo treatment efficacy of anti-inflammatory agents is demonstrated.
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Affiliation(s)
- Zhegang Song
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Duo Mao
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Simon H P Sung
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Ryan T K Kwok
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Jacky W Y Lam
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
| | - Deling Kong
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Dan Ding
- State Key Laboratory of Medicinal Chemical Biology, Key Laboratory of Bioactive Materials, Ministry of Education and College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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23
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Rais B, Köster M, Rahim MI, Pils M, Seitz JM, Hauser H, Wirth D, Mueller PP. Evaluation of the inflammatory potential of implant materials in a mouse model by bioluminescent imaging of intravenously injected bone marrow cells. J Biomed Mater Res A 2016; 104:2149-58. [DOI: 10.1002/jbm.a.35758] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Revised: 04/15/2016] [Accepted: 04/20/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Bushra Rais
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
| | - Mario Köster
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
| | - Muhammad Imran Rahim
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
| | - Marina Pils
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
| | - Jan-Marten Seitz
- Institute of Material Sciences; Leibniz University Hannover; An der Universität 2 Garbsen 30823 Germany
- Department of Materials Science and Engineering; Michigan Technological University; 1400 Townsend Drive Houghton Michigan 49931
| | - Hansjörg Hauser
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
| | - Dagmar Wirth
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
| | - Peter P. Mueller
- Helmholtz Centre for Infection Research; Inhoffenstrasse 7 Braunschweig 38124 Germany
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24
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Dong X, Wei C, Liu T, Lv F, Qian Z. Real-Time Fluorescence Tracking of Protoporphyrin Incorporated Thermosensitive Hydrogel and Its Drug Release in Vivo. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5104-13. [PMID: 26848506 DOI: 10.1021/acsami.5b11493] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xia Dong
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, People’s Republic of China
| | - Chang Wei
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, People’s Republic of China
| | - Tianjun Liu
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, People’s Republic of China
| | - Feng Lv
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, People’s Republic of China
| | - Zhiyong Qian
- State Key Laboratory of Biotherapy/Collaborative Innovation
Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China
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25
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van Lith R, Wang X, Ameer G. Biodegradable Elastomers with Antioxidant and Retinoid-like Properties. ACS Biomater Sci Eng 2016; 2:268-277. [PMID: 27347559 DOI: 10.1021/acsbiomaterials.5b00534] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Intimal hyperplasia (IH) is a type of scarring that involves complex pathophysiological responses of the vasculature to injury, including overproliferation and migration of vascular smooth muscle cells (VSMCs), adventitial fibroblasts, and the activation of macrophages. The objective of this research was to develop a biodegradable polymer with intrinsic properties that would combat the cellular processes that contribute to IH. Citric acid, 1,8-octanediol, and all-trans retinoic acid (atRA) were incorporated into a polyester network via a condensation reaction to form the thermoset poly(1,8-octamethylene-citrate-co-retinate) (POCR). POCR was chemically characterized and assessed for the presence of antioxidant and retinoidlike properties. HNMR and ATR-FTIR confirmed the incorporation of atRA into the backbone of the polymer network. POCR was able to scavenge radicals and inhibit lipid peroxidation. The proliferation and migration of vascular smooth muscle cells cultured on POCR were inhibited, whereas endothelial cell proliferation and migration were not. These results are consistent with the biological effects of atRA. These results are the first to demonstrate the synthesis of a polymer with intrinsic antirestenotic properties for potential use in the fabrication of vascular devices such as stents and vascular grafts.
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Affiliation(s)
- Robert van Lith
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, United States
| | - Xuesong Wang
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, United States
| | - Guillermo Ameer
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois 60208, United States; Department of Surgery, Feinberg School of Medicine, Chicago, Illinois 60611, United States; Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, United States; Simpson Querrey Institute for BioNanotechnology in Medicine, Northwestern University, Chicago, Illinois 60611, United States; International Institute for Nanotechnology, Northwestern University, Evanston, Illinois 60208, United States
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26
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Prunty MC, Aung MH, Hanif AM, Allen RS, Chrenek MA, Boatright JH, Thule PM, Kundu K, Murthy N, Pardue MT. In Vivo Imaging of Retinal Oxidative Stress Using a Reactive Oxygen Species-Activated Fluorescent Probe. Invest Ophthalmol Vis Sci 2015; 56:5862-70. [PMID: 26348635 DOI: 10.1167/iovs.15-16810] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
PURPOSE In vivo methods for detecting oxidative stress in the eye would improve screening and monitoring of the leading causes of blindness: diabetic retinopathy, glaucoma, and age-related macular degeneration. METHODS To develop an in vivo biomarker for oxidative stress in the eye, we tested the efficacy of a reactive oxygen species (ROS)-activated, near-infrared hydrocyanine-800CW (H-800CW) fluorescent probe in light-induced retinal degeneration (LIRD) mouse models. After intravitreal delivery in LIRD rats, fluorescent microscopy was used to confirm that the oxidized H-800CW appeared in the same retinal layers as an established ROS marker (dichlorofluorescein). RESULTS Dose-response curves of increasing concentrations of intravenously injected H-800CW demonstrated linear increases in both intensity and total area of fundus hyperfluorescence in LIRD mice, as detected by scanning laser ophthalmoscopy. Fundus hyperfluorescence also correlated with the duration of light damage and functional deficits in vision after LIRD. In LIRD rats with intravitreal injections of H-800CW, fluorescent labeling was localized to photoreceptor inner segments, similar to dichlorofluorescein. CONCLUSIONS Hydrocyanine-800CW detects retinal ROS in vivo and shows potential as a novel biomarker for ROS levels in ophthalmic diseases.
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Affiliation(s)
- Megan C Prunty
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States
| | - Moe H Aung
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States
| | - Adam M Hanif
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
| | - Rachael S Allen
- Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
| | - Micah A Chrenek
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States
| | - Jeffrey H Boatright
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States 2Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
| | - Peter M Thule
- Biomedical Research, Atlanta VA Medical Center, Atlanta, Georgia, United States 4Department of Medicine, Emory University, Atlanta, Georgia, United States
| | | | - Niren Murthy
- Department of Bioengineering, University of California, Berkeley, California, United States
| | - Machelle T Pardue
- Department of Ophthalmology, Emory University, Atlanta, Georgia, United States 2Atlanta VA Center for Visual and Neurocognitive Rehabilitation, Atlanta, Georgia, United States
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27
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Gorka AP, Nani RR, Schnermann MJ. Cyanine polyene reactivity: scope and biomedical applications. Org Biomol Chem 2015; 13:7584-98. [PMID: 26052876 PMCID: PMC7780248 DOI: 10.1039/c5ob00788g] [Citation(s) in RCA: 123] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cyanines are indispensable fluorophores that form the chemical basis of many fluorescence-based applications. A feature that distinguishes cyanines from other common fluorophores is an exposed polyene linker that is both crucial to absorption and emission and subject to covalent reactions that dramatically alter these optical properties. Over the past decade, reactions involving the cyanine polyene have been used as foundational elements for a range of biomedical techniques. These include the optical sensing of biological analytes, super-resolution imaging, and near-IR light-initiated uncaging. This review surveys the chemical reactivity of the cyanine polyene and the biomedical methods enabled by these reactions. The overarching goal is to highlight the multifaceted nature of cyanine chemistry and biology, as well as to point out the key role of reactivity-based insights in this promising area.
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Affiliation(s)
- Alexander P Gorka
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, USA.
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28
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Animal Test Models for Implant-Associated Inflammation and Infections. BIOMEDICAL TECHNOLOGY 2015. [DOI: 10.1007/978-3-319-10981-7_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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29
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Dong X, Wei C, Liu T, Lv F. Protoporphyrin incorporated alginate hydrogel: preparation, characterization and fluorescence imaging in vivo. RSC Adv 2015. [DOI: 10.1039/c5ra19285d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A protoporphyrin incorporated alginate hydrogel exhibits the fluorescence ability to locate a drug and carrier with multispectral fluorescence imaging in vivo.
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Affiliation(s)
- Xia Dong
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- PR China
| | - Chang Wei
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- PR China
| | - Tianjun Liu
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- PR China
| | - Feng Lv
- Tianjin Key Laboratory of Biomedical Materials
- Institute of Biomedical Engineering
- Chinese Academy of Medical Sciences & Peking Union Medical College
- Tianjin 300192
- PR China
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30
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Schoknecht K, Prager O, Vazana U, Kamintsky L, Harhausen D, Zille M, Figge L, Chassidim Y, Schellenberger E, Kovács R, Heinemann U, Friedman A. Monitoring stroke progression: in vivo imaging of cortical perfusion, blood-brain barrier permeability and cellular damage in the rat photothrombosis model. J Cereb Blood Flow Metab 2014; 34:1791-801. [PMID: 25160672 PMCID: PMC4269756 DOI: 10.1038/jcbfm.2014.147] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 07/15/2014] [Accepted: 07/21/2014] [Indexed: 11/09/2022]
Abstract
Focal cerebral ischemia is among the main causes of death and disability worldwide. The ischemic core often progresses, invading the peri-ischemic brain; however, assessing the propensity of the peri-ischemic brain to undergo secondary damage, understanding the underlying mechanisms, and adjusting treatment accordingly remain clinically unmet challenges. A significant hallmark of the peri-ischemic brain is dysfunction of the blood-brain barrier (BBB), yet the role of disturbed vascular permeability in stroke progression is unclear. Here we describe a longitudinal in vivo fluorescence imaging approach for the evaluation of cortical perfusion, BBB dysfunction, free radical formation and cellular injury using the photothrombosis vascular occlusion model in male Sprague Dawley rats. Blood-brain barrier dysfunction propagated within the peri-ischemic brain in the first hours after photothrombosis and was associated with free radical formation and cellular injury. Inhibiting free radical signaling significantly reduced progressive cellular damage after photothrombosis, with no significant effect on blood flow and BBB permeability. Our approach allows a dynamic follow-up of cellular events and their response to therapeutics in the acutely injured cerebral cortex.
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Affiliation(s)
- Karl Schoknecht
- Institute for Neurophysiology, Charité-University Medicine Berlin, Berlin, Germany
| | - Ofer Prager
- Departments of Physiology and Cell Biology, Cognitive and Brain Sciences, The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Udi Vazana
- Departments of Physiology and Cell Biology, Cognitive and Brain Sciences, The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Lyn Kamintsky
- Departments of Physiology and Cell Biology, Cognitive and Brain Sciences, The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Denise Harhausen
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité-University Medicine Berlin, Berlin, Germany
| | - Marietta Zille
- Department of Experimental Neurology, Center for Stroke Research Berlin (CSB), Charité-University Medicine Berlin, Berlin, Germany
| | - Lena Figge
- Department of Radiology, Charité-University Medicine Berlin, Berlin, Germany
| | - Yoash Chassidim
- Departments of Physiology and Cell Biology, Cognitive and Brain Sciences, The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Eyk Schellenberger
- Department of Radiology, Charité-University Medicine Berlin, Berlin, Germany
| | - Richard Kovács
- Institute for Neurophysiology, Charité-University Medicine Berlin, Berlin, Germany
| | - Uwe Heinemann
- Institute for Neurophysiology, Charité-University Medicine Berlin, Berlin, Germany
| | - Alon Friedman
- 1] Departments of Physiology and Cell Biology, Cognitive and Brain Sciences, The Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel [2] Department of Medical Neuroscience, Faculty of Medicine, Dalhousie University, Halifax, Canada
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Yang J, van Lith R, Baler K, Hoshi RA, Ameer GA. A thermoresponsive biodegradable polymer with intrinsic antioxidant properties. Biomacromolecules 2014; 15:3942-52. [PMID: 25295411 DOI: 10.1021/bm5010004] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Oxidative stress in tissue can contribute to chronic inflammation that impairs wound healing and the efficacy of cell-based therapies and medical devices. We describe the synthesis and characterization of a biodegradable, thermoresponsive gel with intrinsic antioxidant properties suitable for the delivery of therapeutics. Citric acid, poly(ethylene glycol) (PEG), and poly-N-isopropylacrylamide (PNIPAAm) were copolymerized by sequential polycondensation and radical polymerization to produce poly(polyethylene glycol citrate-co-N-isopropylacrylamide) (PPCN). PPCN was chemically characterized, and the thermoresponsive behavior, antioxidant properties, morphology, potential for protein and cell delivery, and tissue compatibility in vivo were evaluated. The PPCN gel has a lower critical solution temperature (LCST) of 26 °C and exhibits intrinsic antioxidant properties based on its ability to scavenge free radicals, chelate metal ions, and inhibit lipid peroxidation. PPCN displays a hierarchical architecture of micropores and nanofibers, and contrary to typical thermoresponsive polymers, such as PNIPAAm, PPCN gel maintains its volume upon formation. PPCN efficiently entrapped and slowly released the chemokine SDF-1α and supported the viability and proliferation of vascular cells. Subcutaneous injections in rats showed that PPCN gels are resorbed over time and new connective tissue formation takes place without signs of significant inflammation. Ultimately, this intrinsically antioxidant, biodegradable, thermoresponsive gel could potentially be used as an injectable biomaterial for applications where oxidative stress in tissue is a concern.
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Affiliation(s)
- Jian Yang
- Biomedical Engineering Department, Northwestern University , Evanston, Illinois 60208, United States
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Dinjaski N, Suri S, Valle J, Lehman SM, Lasa I, Prieto MA, García AJ. Near-infrared fluorescence imaging as an alternative to bioluminescent bacteria to monitor biomaterial-associated infections. Acta Biomater 2014; 10:2935-44. [PMID: 24632360 DOI: 10.1016/j.actbio.2014.03.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 02/13/2014] [Accepted: 03/04/2014] [Indexed: 11/28/2022]
Abstract
Biomaterial-associated infection is one of the most common complications related to the implantation of any biomedical device. Several in vivo imaging platforms have emerged as powerful diagnostic tools to longitudinally monitor biomaterial-associated infections in small animal models. In this study, we directly compared two imaging approaches: bacteria engineered to produce luciferase to generate bioluminescence and reactive oxygen species (ROS) imaging of the inflammatory response associated with the infected implant. We performed longitudinal imaging of bioluminescence associated with bacteria strains expressing plasmid-integrated luciferase driven by different promoters or a strain with the luciferase gene integrated into the chromosome. These luminescent strains provided an adequate signal for acute (0-4 days) monitoring of the infection, but the bioluminescence signal decreased over time and leveled off at 7 days post-implantation. This loss in the bioluminescence signal was attributed to changes in the metabolic activity of the bacteria. In contrast, near-infrared fluorescence imaging of ROS associated with inflammation to the implant provided sensitive and dose-dependent signals of biomaterial-associated bacteria. ROS imaging exhibited higher sensitivity than the bioluminescence imaging and was independent of the bacteria strain. Near-infrared fluorescence imaging of inflammatory responses represents a powerful alternative to bioluminescence imaging for monitoring biomaterial-associated bacterial infections.
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Affiliation(s)
- Nina Dinjaski
- Centro de Investigaciones Biológicas, CSIC, Madrid 28040, Spain
| | - Shalu Suri
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0363, USA
| | - Jaione Valle
- Instituto de Agrobiotecnología, UPNA-CSIC-Gobierno de Navarra, 31006 Pamplona, Spain
| | - Susan M Lehman
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0363, USA
| | - Iñigo Lasa
- Instituto de Agrobiotecnología, UPNA-CSIC-Gobierno de Navarra, 31006 Pamplona, Spain
| | | | - Andrés J García
- Woodruff School of Mechanical Engineering and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA 30332-0363, USA.
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33
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van Lith R, Gregory EK, Yang J, Kibbe MR, Ameer GA. Engineering biodegradable polyester elastomers with antioxidant properties to attenuate oxidative stress in tissues. Biomaterials 2014; 35:8113-22. [PMID: 24976244 DOI: 10.1016/j.biomaterials.2014.06.004] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 06/01/2014] [Indexed: 12/22/2022]
Abstract
Oxidative stress plays an important role in the limited biological compatibility of many biomaterials due to inflammation, as well as in various pathologies including atherosclerosis and restenosis as a result of vascular interventions. Engineering antioxidant properties into a material is therefore a potential avenue to improve the biocompatibility of materials, as well as to locally attenuate oxidative stress-related pathologies. Moreover, biodegradable polymers that have antioxidant properties built into their backbone structure have high relative antioxidant content and may provide prolonged, continuous attenuation of oxidative stress while the polymer or its degradation products are present. In this report, we describe the synthesis of poly(1,8-octanediol-co-citrate-co-ascorbate) (POCA), a citric-acid based biodegradable elastomer with native, intrinsic antioxidant properties. The in vitro antioxidant activity of POCA as well as its effects on vascular cells in vitro and in vivo were studied. Antioxidant properties investigated included scavenging of free radicals, iron chelation and the inhibition of lipid peroxidation. POCA reduced reactive oxygen species generation in cells after an oxidative challenge and protected cells from oxidative stress-induced cell death. Importantly, POCA antioxidant properties remained present upon degradation. Vascular cells cultured on POCA showed high viability, and POCA selectively inhibited smooth muscle cell proliferation, while supporting endothelial cell proliferation. Finally, preliminary data on POCA-coated ePTFE grafts showed reduced intimal hyperplasia when compared to standard ePTFE grafts. This biodegradable, intrinsically antioxidant polymer may be useful for tissue engineering application where oxidative stress is a concern.
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Affiliation(s)
- Robert van Lith
- Biomedical Engineering Department, Northwestern University, Evanston IL 60208, USA
| | - Elaine K Gregory
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago IL 60611, USA; Institute for BioNanotechnology in Medicine, Northwestern University, Chicago IL 60611, USA
| | - Jian Yang
- Biomedical Engineering Department, Northwestern University, Evanston IL 60208, USA
| | - Melina R Kibbe
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago IL 60611, USA; Institute for BioNanotechnology in Medicine, Northwestern University, Chicago IL 60611, USA
| | - Guillermo A Ameer
- Biomedical Engineering Department, Northwestern University, Evanston IL 60208, USA; Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago IL 60611, USA; Chemistry of Life Processes Institute, Northwestern University, Evanston IL 60208, USA; Institute for BioNanotechnology in Medicine, Northwestern University, Chicago IL 60611, USA.
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34
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Graebert JK, Henzel MK, Honda KS, Bogie KM. Systemic Evaluation of Electrical Stimulation for Ischemic Wound Therapy in a Preclinical In Vivo Model. Adv Wound Care (New Rochelle) 2014; 3:428-437. [PMID: 24940557 DOI: 10.1089/wound.2014.0534] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 03/19/2014] [Indexed: 11/13/2022] Open
Abstract
Objective: In a systematic preclinical investigation of ischemic wound healing, we investigated the hypothesis that electrical stimulation (ES) promotes the healing of ischemic wounds. Approach: The effects of varying clinically relevant ES variables were evaluated using our modified version of the Gould F344 rat ischemic wound model. Stimulation was delivered using the novel lightweight integrated, single-channel, current-controlled modular surface stimulation (MSS) device. Stepwise variation allowed the effects of five different stimulation paradigms within an appropriate current density range to be studied. Within each group, 8-10 animals were treated for 28 days or until the ischemic wounds were healed and 5 animals were treated for 12 days. Eight rats received sham devices. A quantitative multivariable outcomes assessment procedure was used to evaluate the effects of ES. Results: Ischemic wounds treated with a decreased interpulse interval (IPI) had the highest rate of complete wound closure at 3 weeks. Wounds treated with decreased pulse amplitude (PA) had a lower proportion of closed wounds than sham ischemic wounds and showed sustained inflammation with a lack of wound contraction. Innovation: Our systematic study of varying ES paradigms using the novel MSS device provides preliminary insight into potential mechanisms of ES in ischemic wound healing. Conclusion: Clinically appropriate ES can more than double the proportion of ischemic wounds closed by 3 weeks in this model. Ninety percent of wounds treated with a decreased IPI healed by 21 days compared with only 29% of ischemic wounds treated with decreased PA, which appears to inhibit healing.
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Affiliation(s)
- Jennifer K. Graebert
- APT Center of Excellence, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
| | - M. Kristi Henzel
- APT Center of Excellence, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
- Department of Physical Medicine & Rehabilitation, Case Western Reserve University, Cleveland, Ohio
| | - Kord S. Honda
- Department of Dermatology, Case Western Reserve University, Cleveland, Ohio
| | - Kath M. Bogie
- APT Center of Excellence, Louis Stokes Cleveland VA Medical Center, Cleveland, Ohio
- Department of Orthopedics & Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
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35
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Suri S, Lehman SM, Selvam S, Reddie K, Maity S, Murthy N, García AJ. In vivo fluorescence imaging of biomaterial-associated inflammation and infection in a minimally invasive manner. J Biomed Mater Res A 2014; 103:76-83. [PMID: 24616254 DOI: 10.1002/jbm.a.35162] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 03/01/2014] [Accepted: 03/04/2014] [Indexed: 12/18/2022]
Abstract
Implant-associated inflammation and bacterial infection severely limit the functional performance of medical devices and are a major cause of implant failure. Therefore, it is crucial to develop methodologies to monitor/image implant-associated aseptic inflammation and bacterial infection in a minimally invasive manner. Here, we exploited near-infrared fluorescence (NIRF) molecular probes injected locally at the implant site to perform minimally invasive, simultaneous imaging of inflammation, and infection associated with implanted polymer disks. The hydro-sulfo-Cy5 (H-s-Cy5) probe detected reactive oxygen species associated with inflammatory responses to both aseptic and biofilm-containing implants, whereas diaminocyanine sulfonate selectively detected nitric oxide associated with a biofilm on the biomaterial at acute time points (<4 days). This imaging modality also allows longitudinal monitoring because of high specificity and fast clearance rate of the fluorescent probes. Taken together, these NIRF molecular probes represent a useful tool to directly image inflammatory responses and infections associated with implanted devices for the diagnosis of device-associated inflammation and infection as well as the development of effective therapies.
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Affiliation(s)
- Shalu Suri
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia; Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia
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Victor SP, Paul W, Jayabalan M, Sharma CP. Cucurbituril/hydroxyapatite based nanoparticles for potential use in theranostic applications. CrystEngComm 2014. [DOI: 10.1039/c4ce00766b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Interactions of cucurbituril and hydroxyapatite augment drug loading and the concomitant presence of samarium and CB[7] offers theranostic potential.
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Affiliation(s)
- Sunita Prem Victor
- Polymer Science Division
- Biomedical Technology Wing
- Sree Chitra Tirunal Institute for Medical Sciences & Technology
- Thiruvananthapuram 695012, India
| | - Willi Paul
- Biosurface Technology Division
- Biomedical Technology Wing
- Sree Chitra Tirunal Institute for Medical Sciences & Technology
- Thiruvananthapuram 695012, India
| | - Muthu Jayabalan
- Polymer Science Division
- Biomedical Technology Wing
- Sree Chitra Tirunal Institute for Medical Sciences & Technology
- Thiruvananthapuram 695012, India
| | - Chandra P. Sharma
- Biosurface Technology Division
- Biomedical Technology Wing
- Sree Chitra Tirunal Institute for Medical Sciences & Technology
- Thiruvananthapuram 695012, India
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Microdialysis sampling techniques applied to studies of the foreign body reaction. Eur J Pharm Sci 2013; 57:74-86. [PMID: 24269987 DOI: 10.1016/j.ejps.2013.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 11/05/2013] [Indexed: 02/06/2023]
Abstract
Implanted materials including drug delivery devices and chemical sensors undergo what is termed the foreign body reaction (FBR). Depending on the device and its intended application, the FBR can have differing consequences. An extensive scientific research effort has been devoted to elucidating the cellular and molecular mechanisms that drive the FBR. Important, yet relatively unexplored, research includes the localized tissue biochemistry and the chemical signaling events that occur throughout the FBR. This review provides an overview of the mechanisms of the FBR, describes how the FBR affects different implanted devices, and illustrates the role that microdialysis sampling can play in further elucidating the chemical communication processes that drive FBR outcomes.
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38
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Dinjaski N, Fernández-Gutiérrez M, Selvam S, Parra-Ruiz FJ, Lehman SM, San Román J, García E, García JL, García AJ, Prieto MA. PHACOS, a functionalized bacterial polyester with bactericidal activity against methicillin-resistant Staphylococcus aureus. Biomaterials 2013; 35:14-24. [PMID: 24094939 DOI: 10.1016/j.biomaterials.2013.09.059] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/17/2013] [Indexed: 12/22/2022]
Abstract
Biomaterial-associated infections represent a significant clinical problem, and treatment of these microbial infections is becoming troublesome due to the increasing number of antibiotic-resistant strains. Here, we report a naturally functionalized bacterial polyhydroxyalkanoate (PHACOS) with antibacterial properties. We demonstrate that PHACOS selectively and efficiently inhibits the growth of methicillin-resistant Staphylococcus aureus (MRSA) both in vitro and in vivo. This ability has been ascribed to the functionalized side chains containing thioester groups. Significantly less (3.2-fold) biofilm formation of S. aureus was detected on PHACOS compared to biofilms formed on control poly(3-hydroxyoctanoate-co-hydroxyhexanoate) and poly(ethylene terephthalate), but no differences were observed in bacterial adhesion among these polymers. PHACOS elicited minimal cytotoxic and inflammatory effects on murine macrophages and supported normal fibroblast adhesion. In vivo fluorescence imaging demonstrated minimal inflammation and excellent antibacterial activity for PHACOS compared to controls in an in vivo model of implant-associated infection. Additionally, reductions in neutrophils and macrophages in the vicinity of sterile PHACOS compared to sterile PHO implant were observed by immunohistochemistry. Moreover, a similar percentage of inflammatory cells was found in the tissue surrounding sterile PHACOS and S. aureus pre-colonized PHACOS implants, and these levels were significantly lower than S. aureus pre-colonized control polymers. These findings support a contact active surface mode of antibacterial action for PHACOS and establish this functionalized polyhydroxyalkanoate as an infection-resistant biomaterial.
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Affiliation(s)
- Nina Dinjaski
- Centro de Investigaciones Biológicas, CSIC, Madrid 28040, Spain
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39
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Magalotti S, Gustafson T, Cao Q, Abendschein D, Pierce R, Berezin MY, Akers WJ. Evaluation of inflammatory response to acute ischemia using near-infrared fluorescent reactive oxygen sensors. Mol Imaging Biol 2013; 15:423-30. [PMID: 23378226 PMCID: PMC3940059 DOI: 10.1007/s11307-013-0614-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
PURPOSE Ischemia-related processes associated with the generation of inflammatory molecules such as reactive oxygen species (ROS) are difficult to detect at the acute stage before the physiologic and anatomic evidence of tissue damage is present. Evaluation of the inflammatory and healing response early after an ischemic event in vivo will aid in treatment selection and patient outcomes. We introduce a novel near-infrared hydrocyanine molecular probe for the detection of ROS as a marker of tissue response to ischemia and a precursor to angiogenesis and remodeling. The synthesized molecular probe, initially a non-fluorescent hydrocyanine conjugated to polyethylene glycol, converts to a highly fluorescent cyanine reporter upon oxidation. PROCEDURES The probe was applied in a preclinical mouse model for myocardial infarction, where ligation and removal of a portion of the femoral artery in the hindlimb resulted in temporary ischemia followed by angiogenesis and healing. RESULTS The observed increase in fluorescence intensity was approximately sixfold over 24 h in the ischemic tissue relative to the uninjured control limb and was attributed to the higher concentration of ROS in the ischemic tissue. CONCLUSIONS These results demonstrate the potential for non-invasive sensing for interrogating the inflammatory and healing response in ischemic tissue.
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Affiliation(s)
- Selena Magalotti
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Tiffany Gustafson
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Qian Cao
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Dana Abendschein
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Richard Pierce
- Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63110
| | - Mikhail Y. Berezin
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
| | - Walter J. Akers
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110
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40
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Byrne WL, DeLille A, Kuo C, de Jong JS, van Dam GM, Francis KP, Tangney M. Use of optical imaging to progress novel therapeutics to the clinic. J Control Release 2013; 172:523-34. [PMID: 23680286 DOI: 10.1016/j.jconrel.2013.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 04/30/2013] [Accepted: 05/06/2013] [Indexed: 01/02/2023]
Abstract
There is an undisputed need for employment and improvement of robust technology for real-time analyses of therapeutic delivery and responses in clinical translation of gene and cell therapies. Over the past decade, optical imaging has become the in vivo imaging modality of choice for many preclinical laboratories due to its efficiency, practicality and affordability, while more recently, the clinical potential for this technology is becoming apparent. This review provides an update on the current state of the art in in vivo optical imaging and discusses this rapidly improving technology in the context of it representing a translation enabler or indeed a future clinical imaging modality in its own right.
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Affiliation(s)
- William L Byrne
- Cork Cancer Research Centre, BioScience Institute, University College Cork, Cork, Ireland
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41
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Thankam Finosh G, Jayabalan M. Reactive oxygen species—Control and management using amphiphilic biosynthetic hydrogels for cardiac applications. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/abb.2013.412150] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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42
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Vacanti NM, Cheng H, Hill PS, Guerreiro JDT, Dang TT, Ma M, Watson S, Hwang NS, Langer R, Anderson DG. Localized delivery of dexamethasone from electrospun fibers reduces the foreign body response. Biomacromolecules 2012; 13:3031-8. [PMID: 22920794 PMCID: PMC3466020 DOI: 10.1021/bm300520u] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 08/09/2012] [Indexed: 01/08/2023]
Abstract
Synthetic scaffolds are crucial to applications in regenerative medicine; however, the foreign body response can impede regeneration and may lead to failure of the implant. Herein we report the development of a tissue engineering scaffold that allows attachment and proliferation of regenerating cells while reducing the foreign body response by localized delivery of an anti-inflammatory agent. Electrospun fibers composed of poly(l-lactic) acid (PLLA) and poly(ε-caprolactone) (PCL) were prepared with and without the steroid anti-inflammatory drug, dexamethasone. Analysis of subcutaneous implants demonstrated that the PLLA fibers encapsulating dexamethasone evoked a less severe inflammatory response than the other fibers examined. They also displayed a controlled release of dexamethasone over a period of time conducive to tissue regeneration and allowed human mesenchymal stem cells to adhere to and proliferate on them in vitro. These observations demonstrate their potential as a building block for tissue engineering scaffolds.
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Affiliation(s)
- Nathaniel M Vacanti
- Department of Chemical Engineering, Massachusetts Institute of Technology , Cambridge, MA, USA
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43
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Lavin DM, Stefani RM, Zhang L, Furtado S, Hopkins RA, Mathiowitz E. Multifunctional polymeric microfibers with prolonged drug delivery and structural support capabilities. Acta Biomater 2012; 8:1891-900. [PMID: 22326788 DOI: 10.1016/j.actbio.2012.01.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 01/17/2012] [Accepted: 01/17/2012] [Indexed: 11/25/2022]
Abstract
The strength and stability of hybrid fiber delivery systems, ones that perform a mechanical function and simultaneously deliver drug, are critical in the design of surgically implantable constructs. We report the fabrication of drug-eluting microfibers where drug loading and processing conditions alone increase microfiber strength and stability partially due to solvent-induced crystallization. Poly(L-lactic acid) microfibers of 64±7 μm diameter were wet spun by phase inversion. Encapsulation of a model hydrophobic anti-inflammatory drug, dexamethasone, at high loading provided stability to microfibers which maintained linear cumulative release kinetics up to 8 weeks in vitro. In our wet spinning process, all microfibers had increased crystallinity (13-17%) in comparison to unprocessed polymer without any mechanical stretching. Moreover, microfibers with the highest drug loading retained 97% of initial tensile strength and were statistically stronger than all other microfiber formulations, including control fibers without drug. Results indicate that the encapsulation of small hydrophobic molecules (<400 Da) may increase the mechanical integrity of microfilaments whose crystallinity is also increased as a result of the process. Multifunctional drug-eluting microfibers can provide an exciting new opportunity to design novel biomaterials with mechanical stability and controlled release of a variety of therapeutics with micron-scale accuracy.
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