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Mandot S, Zannoni EM, Cai L, Nie X, Riviere PJL, Wilson MD, Meng LJ. A High-Sensitivity Benchtop X-Ray Fluorescence Emission Tomography (XFET) System With a Full-Ring of X-Ray Imaging-Spectrometers and a Compound-Eye Collimation Aperture. IEEE TRANSACTIONS ON MEDICAL IMAGING 2024; 43:1782-1791. [PMID: 38696285 PMCID: PMC11129545 DOI: 10.1109/tmi.2023.3348791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2024]
Abstract
The advent of metal-based drugs and metal nanoparticles as therapeutic agents in anti-tumor treatment has motivated the advancement of X-ray fluorescence computed tomography (XFCT) techniques. An XFCT imaging modality can detect, quantify, and image the biodistribution of metal elements using the X-ray fluorescence signal emitted upon X-ray irradiation. However, the majority of XFCT imaging systems and instrumentation developed so far rely on a single or a small number of detectors. This work introduces the first full-ring benchtop X-ray fluorescence emission tomography (XFET) system equipped with 24 solid-state detectors arranged in a hexagonal geometry and a 96-pinhole compound-eye collimator. We experimentally demonstrate the system's sensitivity and its capability of multi-element detection and quantification by performing imaging studies on an animal-sized phantom. In our preliminary studies, the phantom was irradiated with a pencil beam of X-rays produced using a low-powered polychromatic X-ray source (90kVp and 60W max power). This investigation shows a significant enhancement in the detection limit of gadolinium to as low as 0.1 mg/mL concentration. The results also illustrate the unique capabilities of the XFET system to simultaneously determine the spatial distribution and accurately quantify the concentrations of multiple metal elements.
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Akbar NS, Habib MB, Rafiq M, Muhammad T, Alghamdi M. Biological structural study of emerging shaped nanoparticles for the blood flow in diverging tapered stenosed arteries to see their application in drug delivery. Sci Rep 2024; 14:1475. [PMID: 38233426 PMCID: PMC10794421 DOI: 10.1038/s41598-024-51848-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024] Open
Abstract
The magnetic force effects and differently shaped nano-particles in diverging tapering arteries having stenoses are being studied in current research via blood flow model. There hasn't been any research done on using metallic nanoparticles of different shapes with water as the base fluid. A radially symmetric but axially non-symmetric stenosis is used to depict the blood flow. Another significant aspect of our research is the study of symmetrical distribution of wall shearing stresses in connection with resistive impedance, as well as the rise of these quantities with the progression of stenosis. Shaping nanoparticles in accordance with the understanding of blood flow in arteries offers numerous possibilities for improving drug delivery, targeted therapies, and diagnostic imaging in the context of cardiovascular and other vascular-related diseases. Exact solutions for different flow quantities namely velocity, temperature, resistance impedance, boundary shear stress, and shearing stress at the stenosis throat, have been assessed. For various parameters of relevance for Cu-water, the graphical results of several types of tapered arteries (i.e. diverging tapering) have been explored.
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Affiliation(s)
- Noreen Sher Akbar
- DBS&H, CEME, National University of Sciences and Technology, Islamabad 44000, Pakistan
| | | | - Maimona Rafiq
- Department of Mathematics, COMSATS University Islamabad, Attock, 43600, Pakistan
| | - Taseer Muhammad
- Department of Mathematics, College of Science, King Khalid University, 61413, Abha, Saudi Arabia
| | - Metib Alghamdi
- Department of Mathematics, College of Science, King Khalid University, 61413, Abha, Saudi Arabia
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Zhang M, Ma X, Jin G, Han D, Xue J, Du Y, Chen X, Yang F, Zhao C, Zhang X. A Modified Method for Transient Transformation via Pollen Magnetofection in Lilium Germplasm. Int J Mol Sci 2023; 24:15304. [PMID: 37894985 PMCID: PMC10607007 DOI: 10.3390/ijms242015304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 09/27/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
Lily (Lilium spp.) is a popular ornamental plant. Traditional genetic transformation methods have low efficiency in lily, thus development of a high-efficiency genetic transformation system is important. In this study, a novel transient transformation method involving pollen magnetofection was established and optimized pollen viability, and exogenous gene expression in magnetofected pollen and that of different germplasm were assessed. The highest germination percentage of Lilium regale pollen was 85.73% in medium containing 100 g/L sucrose, 61.5 mg/L H3BO3, and 91.5 mg/L CaCl2. A 1:4 ratio of nanomagnetic beads to DNA plasmid and transformation time of 0.5 h realized the highest transformation efficiency (88.32%). The GFP activity in transformed pollen averaged 69.66%, while that of the control pollen was 0.00%. In contrast to the control, transgenic seedlings obtained by pollination with magnetofected pollen showed strong positive GUS activity with 56.34% transformation efficiency. Among the lily germplasm tested, 'Sweet Surrender' and L. leucanthum had the highest transformation efficiency (85.80% and 54.47%), whereas L. davidii var. willmottiae was not successfully transformed. Transformation efficiency was positively correlated with pollen equatorial diameter and negatively correlated with polar axis/equatorial diameter ratio. The results suggest that pollen magnetofection-mediated transformation can be applied in Lilium but might have species or cultivar specificity.
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Affiliation(s)
- Mingfang Zhang
- Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
| | - Xu Ma
- College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
| | - Ge Jin
- College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
| | - Dongyang Han
- College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
| | - Jing Xue
- Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
| | - Yunpeng Du
- Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
| | - Xuqing Chen
- Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
| | - Fengping Yang
- Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
| | - Chunli Zhao
- College of Forestry and Grassland Science, Jilin Agricultural University, Changchun 130118, China
| | - Xiuhai Zhang
- Beijing Academy of Agriculture and Forestry Sciences, Key Laboratory of Urban Agriculture (North China), Ministry of Agriculture and Rural Affairs, Beijing 100097, China
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Yang HY, Jang MS, Sun XS, Liu CL, Lee JH, Li Y, Fu Y. CD44-mediated tumor homing of hyaluronic acid nanogels for hypoxia-activated photodynamic therapy against tumor. Colloids Surf B Biointerfaces 2023; 228:113395. [PMID: 37327654 DOI: 10.1016/j.colsurfb.2023.113395] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/07/2023] [Accepted: 06/04/2023] [Indexed: 06/18/2023]
Abstract
In this study, unique hypoxia-activated hyaluronic acid nanogels (HANGs) were reported for CD44-targeted delivery of photosensitizers (chlorin e6, Ce6) for diagnostic imaging and photodynamic therapy (PDT) of cancers. Through the use of a hypoxia-responsive cross-linker (AZO-CDI), the HANGs were prepared by chemically cross-linking primary amine groups-functionalized hyaluronic acid (HA). Under normoxic condition, fluorescence of Ce6 conjugated on the HANGs was highly quenched, and level of reactive oxygen species (ROS) generated from the HANGs was rather low after laser irradiation. However, under hypoxic condition, the HANGs underwent rapid disassociation, and fluorescence of Ce6 conjugated on the HANGs was recovered, triggering high-level singlet oxygen generation after laser irradiation. Due to the presence of HA, the HANGs showed much higher cellular uptake by CD44-positive cancer cells (A549 cells) than that by CD44-negative cancer cells (HepG2 cells). In addition, the HANGs could generate higher level of ROS in A549 cells because of improved cancer cell uptake. This excellent tumor-targeting and singlet oxygen-generating ability of the HANGs was favorable to hypoxia-activated PDT of CD44-positive cancers with significant inhibition of tumor growth within the whole treatment period. Taken together, the HANGs are safe and effective tools in treating CD44-positive cancers.
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Affiliation(s)
- Hong Yu Yang
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, Jilin Province, PR China
| | - Moon-Sun Jang
- School of Medicine and Center for Molecular and Cellular Imaging, Samsung Biomedical Research Institute, Seoul 06351, Republic of Korea; Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Samsung Biomedical Research Institute, Seoul 06351, Republic of Korea
| | - Xin Shun Sun
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, Jilin Province, PR China
| | - Chang Ling Liu
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, Jilin Province, PR China
| | - Jung Hee Lee
- School of Medicine and Center for Molecular and Cellular Imaging, Samsung Biomedical Research Institute, Seoul 06351, Republic of Korea; Department of Radiology, Samsung Medical Center, Sungkyunkwan University, Samsung Biomedical Research Institute, Seoul 06351, Republic of Korea.
| | - Yi Li
- College of Materials and Textile Engineering & Nanotechnology Research Institute (NRI), Jiaxing University, Jiaxing City 314001, Zhejiang Province, PR China.
| | - Yan Fu
- College of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, Jilin Province, PR China.
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Uspenskii SA, Khaptakhanova PA. Boron nanoparticles in chemotherapy and radiotherapy: the synthesis, state-of-the-art, and prospects. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3686-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
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6
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Tarannum N, Pooja K. Recent trends and applications in the research and development activities of redispersible powder: a vision of twenty-first century. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-021-03928-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Biological Mechanisms to Reduce Radioresistance and Increase the Efficacy of Radiotherapy: State of the Art. Int J Mol Sci 2022; 23:ijms231810211. [PMID: 36142122 PMCID: PMC9499172 DOI: 10.3390/ijms231810211] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/25/2022] [Accepted: 09/02/2022] [Indexed: 12/02/2022] Open
Abstract
Cancer treatment with ionizing radiation (IR) is a well-established and effective clinical method to fight different types of tumors and is a palliative treatment to cure metastatic stages. Approximately half of all cancer patients undergo radiotherapy (RT) according to clinical protocols that employ two types of ionizing radiation: sparsely IR (i.e., X-rays) and densely IR (i.e., protons). Most cancer cells irradiated with therapeutic doses exhibit radio-induced cytotoxicity in terms of cell proliferation arrest and cell death by apoptosis. Nevertheless, despite the more tailored advances in RT protocols in the last few years, several tumors show a relatively high percentage of RT failure and tumor relapse due to their radioresistance. To counteract this extremely complex phenomenon and improve clinical protocols, several factors associated with radioresistance, of both a molecular and cellular nature, must be considered. Tumor genetics/epigenetics, tumor microenvironment, tumor metabolism, and the presence of non-malignant cells (i.e., fibroblast-associated cancer cells, macrophage-associated cancer cells, tumor-infiltrating lymphocytes, endothelial cells, cancer stem cells) are the main factors important in determining the tumor response to IR. Here, we attempt to provide an overview of how such factors can be taken advantage of in clinical strategies targeting radioresistant tumors.
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Betker JL, Anchordoquy TJ. The Effect of Repeat Administration of Lipoplexes on Gene Delivery, Biodistribution, and Cytokine Response in Immunocompetent Tumor-bearing Mice. J Pharm Sci 2021; 111:1926-1936. [PMID: 34929156 DOI: 10.1016/j.xphs.2021.12.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 12/14/2021] [Accepted: 12/14/2021] [Indexed: 12/19/2022]
Abstract
It is becoming increasingly clear that the intravenous administration of nanoparticles elicits an immune response that compromises delivery efficiency and can be life threatening. This study investigated both the systemic and tissue-level cytokine response to repeat administration of lipoplexes coated with either lactose or PEG. We report that blood cytokine levels differ significantly from that observed in individual tissues. While we consistently observed a reduced cytokine response to lactosylated particles, this did not result in enhanced delivery or expression as compared to PEGylated formulations. We also document that repeat injection did not increase plasmid levels in the liver, lung, or spleen, but delivery to the tumor was enhanced under these conditions. In addition, we show that changes in neither blood nor tissue cytokines correlated strongly with reporter gene expression, and we observed relatively constant expression efficiencies (RLU/ng plasmid) across all tissues despite a considerably reduced cytokine response in the tumor. Together, these results indicate that both biodistribution and cytokine responses are dramatically altered by a repeat intravenous injection of lipoplexes, and that the mechanisms regulating reporter gene expression are not straightforward.
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Affiliation(s)
- Jamie L Betker
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, United States
| | - Thomas J Anchordoquy
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, United States.
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Co-Encapsulation of Methylene Blue and PARP-Inhibitor into Poly(Lactic-Co-Glycolic Acid) Nanoparticles for Enhanced PDT of Cancer. NANOMATERIALS 2021; 11:nano11061514. [PMID: 34201069 PMCID: PMC8227603 DOI: 10.3390/nano11061514] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 12/12/2022]
Abstract
The development of resistance against photodamage triggered by photodynamic therapy (PDT) is ascribed mainly to the cellular redox defenses and repair. If the tumor tissue is not promptly eliminated by the first few PDT sessions, PDT-resistance can be favored, challenging the efficacy of the treatment. Although the mechanism of PDT resistance is still unclear, in vitro assays have evidenced that it can be developed through the PARP damage-repair signaling pathway. Therefore, inhibition of poly(adenosine diphosphate (ADP)-ribose) polymerase (PARP) has the potential to increase PDT efficacy. This work reports on the synthesis of a controlled release system of a photosensitizer, methylene blue (MB) and a PARP-inhibitor, the veliparib. MB and veliparib were co-encapsulated in poly(lactic-co-glycolic acid) (PLGA) nanoparticles (VMB-NPs). A colloidal stable aqueous suspension of nanoparticles was obtained. The average hydrodynamic diameter was 90 nm and a narrow size distribution was obtained, with a polydispersity index (PDI) of 0.08. The release kinetics of MB and veliparib from VMB-NPs showed an initial burst of 8.7% and 58.3% release of the total amounts of MB and veliparib respectively, in the first 6 h, and a delayed release of up to 11.3% and 70%, in 19 days, for MB and veliparib, respectively. The VMB-NPs showed no cytotoxicity in the dark but the viability of B16F10-Nex2 cells decreased by 36% when the cells were irradiated (102 J/cm2, 660 nm) and treated with VMB-NPs containing 1.0 µM of MB and 8.3 µM of veliparib. Considering the increased photoactivity even at low MB and veliparib concentrations and the absence of cytotoxicity in dark, the co-encapsulation of MB and veliparib was shown to be a promising strategy to improve the PDT efficacy.
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Mei Y, Tang L, Xiao Q, Zhang Z, Zhang Z, Zang J, Zhou J, Wang Y, Wang W, Ren M. Reconstituted high density lipoprotein (rHDL), a versatile drug delivery nanoplatform for tumor targeted therapy. J Mater Chem B 2021; 9:612-633. [PMID: 33306079 DOI: 10.1039/d0tb02139c] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
rHDL is a synthesized drug delivery nanoplatform exhibiting excellent biocompatibility, which possesses most of the advantages of HDL. rHDL shows almost no toxicity and can be degraded to non-toxic substances in vivo. The severe limitation of the application of various antitumor agents is mainly due to their low bioavailability, high toxicity, poor stability, etc. Favorably, antitumor drug-loaded rHDL nanoparticles (NPs), which are known as an important drug delivery system (DDS), help to change the situation a lot. This DDS shows an outstanding active-targeting ability towards tumor cells and improves the therapeutic effect during antitumor treatment while overcoming the shortcomings mentioned above. In the following text, we will mainly focus on the various applications of rHDL in tumor targeted therapy by describing the properties, preparation, receptor active-targeting ability and antitumor effects of antineoplastic drug-loaded rHDL NPs.
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Affiliation(s)
- Yijun Mei
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China.
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Paliwal SR, Kenwat R, Maiti S, Paliwal R. Nanotheranostics for Cancer Therapy and Detection: State of the Art. Curr Pharm Des 2020; 26:5503-5517. [PMID: 33200696 DOI: 10.2174/1381612826666201116120422] [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: 03/15/2020] [Accepted: 08/09/2020] [Indexed: 11/22/2022]
Abstract
Nanotheranostics, an approach of combining both diagnosis and therapy, is one of the latest advances in cancer therapy particularly. Nanocarriers designed and derived from inorganic materials such as like gold nanoparticles, silica nanoparticles, magnetic nanoparticles and carbon nanotubes have been explored for tremendous applications in this area. Similarly, nanoparticles composed of some organic material alone or in combination with inorganic nano-cargos have been developed pre-clinically and possess excellent features desired. Photothermal therapy, MRI, simultaneous imaging and delivery, and combination chemotherapy with a diagnosis are a few of the known methods exploring cancer therapy and detection at organ/tissue/molecular/sub-cellular level. This review comprises an overview of the recent reports meant for nano theranostics purposes. Targeted cancer nanotheranostics have been included for understating tumor micro-environment or cell-specific targeting approach employed. A brief account of various strategies is also included for the readers highlighting the mechanism of cancer therapy.
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Affiliation(s)
- Shivani Rai Paliwal
- SLT Institute of Pharmaceutical Sciences, Guru Ghasidas University, Bilapsur, CG, India
| | - Rameshroo Kenwat
- Nanomedicine and Bioengineering Research Laboratory, Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, MP, India
| | - Sabyasachi Maiti
- Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, MP, India
| | - Rishi Paliwal
- Nanomedicine and Bioengineering Research Laboratory, Department of Pharmacy, Indira Gandhi National Tribal University, Amarkantak, MP, India
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Khoshoei A, Ghasemy E, Poustchi F, Shahbazi MA, Maleki R. Engineering the pH-Sensitivity of the Graphene and Carbon Nanotube Based Nanomedicines in Smart Cancer Therapy by Grafting Trimetyl Chitosan. Pharm Res 2020; 37:160. [PMID: 32747991 PMCID: PMC7399690 DOI: 10.1007/s11095-020-02881-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 07/13/2020] [Indexed: 01/05/2023]
Abstract
PURPOSE The aim of this study was to introduce a smart and responsive drug carrier for Doxorubicin (DOX) and Paclitaxel (PAX) for desirable therapeutic application. METHOD Loading and releasing of DOX and PAX from smart and pH-sensitive functionalized single-walled carbon nanotube (SWCNTs) and graphene carriers have been simulated by molecular dynamics. The influences of chitosan polymer on proposed carriers have been studied, and both carriers were functionalized with carboxyl groups to improve the loading and releasing properties of the drugs. RESULTS The results showed that DOX could be well adsorbed on both functionalized SWCNTs and graphene. In contrast, there was a weak electrostatic and Van der Waals interaction between both these drugs and carriers at cancerous tissues, which is highly favorable for cancer therapy. Adding trimethyl chitosan (TMC) polymer to carriers facilitated DOX release at acidic tissues. Furthermore, at blood pH, the PAX loaded on the functionalized SWCNTs carrier represented the highest dispersion of the drug while the DOX-graphene showed the highest concentration of the drug at a point. In addition, the mean-square displacement (MSD) results of PAX-graphene indicated that the PAX could be adsorbed quickly and be released slowly. Finally, functionalized graphene-TMC-PAX is a smart drug system with responsive behavior and controllable drug release, which are essential in cancer therapy. CONCLUSION Simultaneous application of the carboxyl group and TMC can optimize the pH sensitivity of the SWCNTs and graphene to prepare a novel and smart drug carrier for cancer therapy.
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Affiliation(s)
- Azadeh Khoshoei
- Institute of Nano Science and Nano Technology, University of Kashan, Kashan, Iran
| | - Ebrahim Ghasemy
- Nanotechnology Department, School of New Technologies, Iran University of Science and Technology, Tehran, Iran
| | - Fatemeh Poustchi
- Department of Nanotechnology, University of Guilan, Guilan, Iran
| | - Mohammad-Ali Shahbazi
- Drug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, FI-00014, Helsinki, Finland.
- Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, 45139-56184, Iran.
| | - Reza Maleki
- Department of Chemical Engineering, Shiraz University of Technology, Shiraz, Iran.
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Ghugare AD, Dhanalakshmi R, Vinu R. Preparation and characterization of nanoboron for slurry fuel applications. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.02.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Shah Z, Khan A, Khan W, Kamran Alam M, Islam S, Kumam P, Thounthong P. Micropolar gold blood nanofluid flow and radiative heat transfer between permeable channels. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2020; 186:105197. [PMID: 31805484 DOI: 10.1016/j.cmpb.2019.105197] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/07/2019] [Accepted: 11/09/2019] [Indexed: 05/17/2023]
Abstract
This article characterizes flow and heat transmission of blood that carries the micropolar nanofluid of gold in a permeable channel. The thermal radiations are also present in the channel while its walls are either moving or stationary. The base-fluid is considered as blood while micro polar nanofluid is taken as gold. By using similarity transformations along with dimensionless quantities the modeled equations of the problem are transmuted into a system of non-linear ODEs with a set of appropriate boundary conditions. The semi-analytical method, HAM is then applied to determine the solution of a set of resultant equations. The results obtained by HAM have also compared with numerical solutions. The influence of non-dimensional parameters like fractional parameter suction/injection β, Reynolds Number Re, Darcys Number Da, micropolar parameter K, Prandtl number Pr and Radiation parameter Rd etc., which provides physical interpretations of temperature, microrotation n and velocity fields are discussed in detail with the help of graphical representations. Nusselt number is calculated and presented through table. This study determined that the temperature of micropolar nanofluid augmented along with augmentation in the volume fraction. Radiation Rd augmented the heat transfer rate at the upper wall and reduce it at the lower wall. The suction/injection parameter 'β' reduces the heat transfer rate in case of β < 0 at the upper wall, where it is augmented at lower wall.
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Affiliation(s)
- Zahir Shah
- Center of Excellence in Theoretical and Computational Science (TaCS-CoE), SCL 802 Fixed Point Laboratory, Science Laboratory Building, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, Thailand.
| | - Arshad Khan
- College of Aeronautical Engineering National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan; Department of Mathematics, Abdul Wali Khan University, Mardan, Pakistan.
| | - Waris Khan
- Department of Mathematics, Kohat University of Science & Technology, Kohat, Pakistan.
| | - M Kamran Alam
- Department of Pure & Applied Mathematics, The University of Haripur, Pakistan.
| | - Saeed Islam
- Department of Mathematics, Abdul Wali Khan University, Mardan, Pakistan.
| | - Poom Kumam
- KMUTTFixed Point Research Laboratory, Room SCL 802 Fixed Point Laboratory, Science Laboratory Building, Department of Mathematics, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, Thailand; KMUTT-Fixed Point Theory and Applications Research Group, Theoretical and Computational Science Center (TaCS), Science Laboratory Building, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, Thailand; Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan.
| | - Phatiphat Thounthong
- Renewable Energy Research Centre, Department of Teacher Training in Electrical Engineering, Faculty of Technical Education, King Mongkut's University of Technology North Bangkok, 1518 Pracharat 1 Road, Bangsue, Bangkok 10800 Thailand.
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15
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Encapsulation efficiency of single-walled carbon nanotube for Ifosfamide anti-cancer drug. Comput Biol Med 2019; 114:103433. [DOI: 10.1016/j.compbiomed.2019.103433] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 09/02/2019] [Accepted: 09/03/2019] [Indexed: 01/10/2023]
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16
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Olenin AY. Chemically Modified Silver and Gold Nanoparticles in Spectrometric Analysis. JOURNAL OF ANALYTICAL CHEMISTRY 2019. [DOI: 10.1134/s1061934819040099] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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17
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Xiao K, Liu Q, Al Awwad N, Zhang H, Lai L, Luo Y, Lee JS, Li Y, Lam KS. Reversibly disulfide cross-linked micelles improve the pharmacokinetics and facilitate the targeted, on-demand delivery of doxorubicin in the treatment of B-cell lymphoma. NANOSCALE 2019; 10:8207-8216. [PMID: 29682647 DOI: 10.1039/c8nr00680f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Doxorubicin (DOX) is commonly used to treat human malignancies, and its efficacy can be maximized by limiting the cardiac toxicity when combined with nanoparticles. Here, we reported a unique type of reversibly disulfide cross-linked micellar formulation of DOX (DOX-DCMs) for the targeted therapy of B-cell lymphoma. DOX-DCMs exhibited high drug loading capacity, optimal particle sizes (15-20 nm), outstanding stability in human plasma, and stimuli-responsive drug release profile under reductive conditions. DOX-DCMs significantly improved the pharmacokinetics of DOX, and its elimination half-life (t1/2) and area under curve (AUC) were 5.5 and 12.4 times of that of free DOX, respectively. Biodistribution studies showed that DOX-DCMs were able to preferentially accumulate in the tumor site and significantly reduce the cardiac uptake of DOX. In a xenograft model of human B-cell lymphoma, compared with the equivalent dose of free DOX and non-crosslinked counterpart, DOX-DCMs not only significantly inhibited the tumor growth and prolonged the survival rate, but also remarkably reduced DOX-associated cardiotoxicity. Furthermore, the exogenous administration of N-acetylcysteine (NAC) at 24 h further improved the therapeutic efficacy of DOX-DCMs, which provides a "proof-of-concept" for precise drug delivery on-demand, and may have great translational potential as future cancer nano-therapeutics.
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Affiliation(s)
- Kai Xiao
- National Chengdu Center for Safety Evaluation of Drugs, State Key Laboratory of Biotherapy, Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, P.R. China.
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18
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Fete MG, Betker JL, Shoemaker RK, Anchordoquy TJ. A novel method for conjugating the terminal amine of peptide ligands to cholesterol: synthesis iRGD-cholesterol. Ther Deliv 2019; 10:11-20. [PMID: 30730822 PMCID: PMC6664274 DOI: 10.4155/tde-2018-0057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/30/2018] [Indexed: 12/14/2022] Open
Abstract
AIM Conventional conjugation reactions often involve the use of activated PEG as a linker, but concerns about PEG-mediated reduction in intracellular delivery and enhanced immunogenicity have generated interest in developing methods that eliminate the need for a PEG linker. MATERIALS & METHODS Reaction conditions were identified that specifically couples the terminal amine of a cyclic iRGD peptide (CRGDRGPDC) to the hydroxyl moiety of cholesterol through a short carbamate linker. RESULTS & CONCLUSION Using this method for synthesizing iRGD-cholesterol, peptide ligands can be incorporated into lipid-based delivery systems, thereby eliminating concerns about adverse reactions to PEG. Toxicity and stability data indicate low toxicity and adequate serum stability at low ligand levels.
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Affiliation(s)
- Matthew G Fete
- School of Pharmacy, Rueckert-Hartman College, Regis University, 3333 Regis Blvd, Denver, CO 80221 USA
| | - Jamie L Betker
- Skaggs School of Pharmacy & Pharmaceutical Sciences, University of Colorado, 12850 E. Montview Blvd, Aurora, CO 80045 USA
| | - Richard K Shoemaker
- Department of Chemistry & Biochemistry, University of Colorado, Boulder, CO 80309-0215, USA
| | - Thomas J Anchordoquy
- Skaggs School of Pharmacy & Pharmaceutical Sciences, University of Colorado, 12850 E. Montview Blvd, Aurora, CO 80045 USA
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19
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Olenin AY, Lisichkin GV. Preparation and Use of Chemically Modified Noble Metal Nanoparticles. RUSS J APPL CHEM+ 2018. [DOI: 10.1134/s107042721809001x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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20
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Young JJ, Cheng KM, Young YA, Chen XA, Chen YH, Chang TY, Yen HJ, Chen CC. Chondroitin sulfate-stabilized silver nanoparticles: Improved synthesis and their catalytic, antimicrobial, and biocompatible activities. Carbohydr Res 2018; 457:14-24. [DOI: 10.1016/j.carres.2017.12.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 11/23/2017] [Accepted: 12/11/2017] [Indexed: 12/27/2022]
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21
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Multifunctional Magnetic Nanocomposites on the Base of Magnetite and Hydroxyapatite for Oncology Applications. SPRINGER PROCEEDINGS IN PHYSICS 2018. [DOI: 10.1007/978-3-319-92567-7_2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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22
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Photo-stimulation of persistent luminescence nanoparticles enhances cancer cells death. Int J Pharm 2017; 532:696-703. [DOI: 10.1016/j.ijpharm.2017.07.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 12/11/2022]
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23
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Al-Ani LA, AlSaadi MA, Kadir FA, Hashim NM, Julkapli NM, Yehye WA. Graphene- gold based nanocomposites applications in cancer diseases; Efficient detection and therapeutic tools. Eur J Med Chem 2017; 139:349-366. [PMID: 28806615 DOI: 10.1016/j.ejmech.2017.07.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 07/07/2017] [Accepted: 07/20/2017] [Indexed: 01/09/2023]
Abstract
Early detection and efficient treatment of cancer disease remains a drastic challenge in 21st century. Throughout the bulk of funds, studies, and current therapeutics, cancer seems to aggressively advance with drug resistance strains and recurrence rates. Nevertheless, nanotechnologies have indeed given hope to be the next generation for oncology applications. According to US National cancer institute, it is anticipated to revolutionize the perspectives of cancer diagnosis and therapy. With such success, nano-hybrid strategy creates a marvelous preference. Herein, graphene-gold based composites are being increasingly studied in the field of oncology, for their outstanding performance as robust vehicle of therapeutic agents, built-in optical diagnostic features, and functionality as theranostic system. Additional modes of treatments are also applicable including photothermal, photodynamic, as well as combined therapy. This review aims to demonstrate the various cancer-related applications of graphene-gold based hybrids in terms of detection and therapy, highlighting the major attributes that led to designate such system as a promising ally in the war against cancer.
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Affiliation(s)
- Lina A Al-Ani
- Institute of Postgraduate Studies Building, Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Mohammed A AlSaadi
- Institute of Postgraduate Studies Building, Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, Kuala Lumpur 50603, Malaysia; University of Malaya Centre for Ionic Liquids (UMCiL), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Farkaad A Kadir
- Division of Human Biology, Faculty of Medicine, International Medical University, 57000 Kuala Lumpur, Malaysia
| | - Najihah M Hashim
- Department of Pharmacy, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia; Centre for Natural Products and Drug Discovery (CENAR), University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Nurhidayatullaili M Julkapli
- Institute of Postgraduate Studies Building, Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Wageeh A Yehye
- Institute of Postgraduate Studies Building, Nanotechnology & Catalysis Research Centre (NANOCAT), University of Malaya, Kuala Lumpur 50603, Malaysia.
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24
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Sood A, Arora V, Shah J, Kotnala RK, Jain TK. Multifunctional gold coated iron oxide core-shell nanoparticles stabilized using thiolated sodium alginate for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 80:274-281. [PMID: 28866165 DOI: 10.1016/j.msec.2017.05.079] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 05/07/2017] [Accepted: 05/13/2017] [Indexed: 11/28/2022]
Abstract
In this paper we report synthesis of aqueous based gold coated iron oxide nanoparticles to integrate the localized surface plasma resonance (SPR) properties of gold and magnetic properties of iron oxide in a single system. Iron oxide-gold core shell nanoparticles were stabilized by attachment of thiolated sodium alginate to the surface of nanoparticles. Transmission electron microscope (TEM) micrograph presents an average elementary particle size of 8.1±2.1nm. High resolution TEM (HR-TEM) and X-ray photon spectroscopy further confirms the presence of gold shell around iron oxide core. Gold coating is responsible for reducing saturation magnetization (Ms) value from ~41emu/g to ~24emu/g - in thiolated sodium alginate stabilized gold coated iron oxide core-shell nanoparticles. The drug (curcumin) loading efficiency for the prepared nanocomposites was estimated to be around 7.2wt% (72μgdrug/mg nanoparticles) with encapsulation efficiency of 72.8%. Gold-coated iron oxide core-shell nanoparticles could be of immense importance in the field of targeted drug delivery along with capability to be used as contrast agent for MRI & CT.
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Affiliation(s)
- Ankur Sood
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Sector 16-C, Dwarka, New Delhi 110078, India
| | - Varun Arora
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Sector 16-C, Dwarka, New Delhi 110078, India
| | - Jyoti Shah
- National Physical Laboratory, Dr K.S. Krishnan Road, New Delhi 110012, India
| | - R K Kotnala
- National Physical Laboratory, Dr K.S. Krishnan Road, New Delhi 110012, India
| | - Tapan K Jain
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University, Sector 16-C, Dwarka, New Delhi 110078, India.
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25
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Laranjeira M, Shirosaki Y, Yoshimatsu Yasutomi S, Miyazaki T, Monteiro FJ. Enhanced biosafety of silica coated gadolinium based nanoparticles. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:46. [PMID: 28161832 DOI: 10.1007/s10856-017-5855-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 01/19/2017] [Indexed: 05/24/2023]
Abstract
One of the most important and novel approaches of biomedical engineering is the development of new, effective and non-invasive medical diagnosis abilities, and treatments that have such requirements as advanced technologies for tumor imaging. Gadolinium (Gd) compounds can be used as MRI contrast agents, however the release of Gd3+ ions presents some adverse side effects such as renal failure, pancreatitis or local necrosis. The main aim of the work was the development and optimization of Gadolinium based nanoparticles coated with silica to be used as bioimaging agent. Gd based nanoparticles were prepared through a precipitation method and afterwards, these nanoparticles were covered with silica, using Stöber method with ammonia and functionalized with 3-Aminopropyltriethoxysilane (APTES). Results showed that nanoparticles were homogeneous regarding chemical composition, silica layer thickness, total size and morphology. Also, silica coating was successfully not degraded after 4 weeks at pH 5.5, 6.0 and 7.4, contrary to GdOHCO3 nanoparticles that degraded. Regarding the in vitro cell tests, very good cell proliferation and viability were observed. In conclusion, the results showed that Gd based nanoparticles coated with silica for imaging applications were successfully obtained under a well-controlled method. Furthermore, silica coating may enhance magnetic nanoparticles biosafety because it avoids GdOHCO3 degradation into harmful products (such as Gd3+ ions) at physiological conditions.
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Affiliation(s)
- Marta Laranjeira
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.
- INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal.
- Faculdade de Engenharia, DEMM, Universidade do Porto, Porto, Portugal.
| | - Yuki Shirosaki
- Frontier Research Academy for Young Researchers, Kitakyushu-shi, Fukuoka, Japan
| | | | - Toshiki Miyazaki
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kyushu, Fukuoka, Japan
| | - Fernando Jorge Monteiro
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
- INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Faculdade de Engenharia, DEMM, Universidade do Porto, Porto, Portugal
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26
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Biodegradable and Biocompatible Systems Based on Hydroxyapatite Nanoparticles. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7010060] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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27
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McBride K, Bennington-Gray S, Cook J, Stella L, Felton S, Poulidi D. Improving the crystallinity and magnetocaloric effect of the perovskite La0.65Sr0.35MnO3 using microwave irradiation. CrystEngComm 2017. [DOI: 10.1039/c7ce00882a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
MW heating produces materials that are superior in terms of both structure and magnetic properties.
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Affiliation(s)
- Katherine McBride
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
| | | | - James Cook
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
- School of Mathematics and Physics
| | - Lorenzo Stella
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
- School of Mathematics and Physics
| | - Solveig Felton
- School of Mathematics and Physics
- Queen's University Belfast
- Belfast BT7 1NN
- UK
| | - Danai Poulidi
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG
- UK
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28
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Pylypchuk IV, Kołodyńska D, Kozioł M, Gorbyk PP. Gd-DTPA Adsorption on Chitosan/Magnetite Nanocomposites. NANOSCALE RESEARCH LETTERS 2016; 11:168. [PMID: 27030468 PMCID: PMC4814391 DOI: 10.1186/s11671-016-1363-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 03/10/2016] [Indexed: 06/01/2023]
Abstract
The synthesis of the chitosan/magnetite nanocomposites is presented. Composites were prepared by co-precipitation of iron(II) and iron(III) salts by aqueous ammonia in the 0.1 % chitosan solution. It was shown that magnetite synthesis in the chitosan medium does not affect the magnetite crystal structure. The thermal analysis data showed 4.6 % of mass concentration of chitosan in the hybrid chitosan/magnetite composite. In the concentration range of initial Gd-DTPA solution up to 0.4 mmol/L, addition of chitosan to magnetite increases the adsorption capacity and affinity to Gd-DTPA complex. The Langmuir and Freundlich adsorption models were applied to describe adsorption processes. Nanocomposites were characterized by scanning electron microscopy (SEM), differential thermal analysis (DTA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and specific surface area determination (ASAP) methods.
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Affiliation(s)
- Ie V Pylypchuk
- Nanomaterials Department, Chuiko Institute of Surface Chemistry of the National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164, Kyiv, Ukraine.
| | - D Kołodyńska
- Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie Skłodowska University, M. Curie Skłodowska Sq. 2, 20-031, Lublin, Poland
| | - M Kozioł
- Department of Inorganic Chemistry, Faculty of Chemistry, Maria Curie Skłodowska University, M. Curie Skłodowska Sq. 2, 20-031, Lublin, Poland
| | - P P Gorbyk
- Nanomaterials Department, Chuiko Institute of Surface Chemistry of the National Academy of Sciences of Ukraine, 17 General Naumov Str., 03164, Kyiv, Ukraine
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29
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Laranjeira MS, Moço A, Ferreira J, Coimbra S, Costa E, Santos-Silva A, Ferreira PJ, Monteiro FJ. Different hydroxyapatite magnetic nanoparticles for medical imaging: Its effects on hemostatic, hemolytic activity and cellular cytotoxicity. Colloids Surf B Biointerfaces 2016; 146:363-74. [DOI: 10.1016/j.colsurfb.2016.06.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 06/20/2016] [Accepted: 06/24/2016] [Indexed: 01/14/2023]
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30
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Mir IA, Rawat K, Bohidar HB. CuInGaSe nanocrystals for detection of trace amount of water in D2O (at ppm level). CRYSTAL RESEARCH AND TECHNOLOGY 2016. [DOI: 10.1002/crat.201600054] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Irshad Ahmad Mir
- School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
| | - Kamla Rawat
- Special Center for Nanosciences; Jawaharlal Nehru University; New Delhi 110067 India
- Inter University Accelerator Centre (IUAC); New Delhi 110067 India
| | - H. B. Bohidar
- School of Physical Sciences; Jawaharlal Nehru University; New Delhi 110067 India
- Special Center for Nanosciences; Jawaharlal Nehru University; New Delhi 110067 India
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31
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Li L, Tian L, Zhao W, Li Y, Yang B. Acetate ions enhance load and stability of doxorubicin onto PEGylated nanodiamond for selective tumor intracellular controlled release and therapy. Integr Biol (Camb) 2016; 8:956-67. [PMID: 27502159 DOI: 10.1039/c6ib00068a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A successful drug delivery device for cancer chemotherapy should ideally be able to load drugs highly, bring the drug preferentially into tumor cells and reduce its distribution in normal tissue to enhance therapeutic efficacy. To this purpose, a novel protocol for DOX-loaded PEGylated nanodiamond (ND-PEG-DOX/NaAc, NPDA) was fabricated using sodium acetate medium. The NPDA nanoparticles exhibited a maximum loading efficiency (99 wt%) with ultra-low drug leakage (7 wt%). Examination by confocal microscope and flow cytometer showed that the NPDA uptake by cells was time-dependent, with a slow and sustained drug release from the lysosomes at a low pH. Also, when CHO (a normal cell) and MCF-7 (a cancer cell) were treated with NPDA, the results demonstrated that NPDA preferentially accumulated much more in tumor cells than in normal cells, which implied that NPDA has the ability to selectively kill tumor cells. In addition, NPDA can inhibit the migration and proliferation of tumor cells and change the cell cycle compared to the free drug. Outcomes from this work suggest that NPDA would be a promising drug delivery platform and the preparation of such a drug delivery system will also have implications in improving the biomedical applications of smart nanodiamond carriers.
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Affiliation(s)
- Lin Li
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China.
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32
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Ahab A, Rohman F, Iskandar F, Haryanto F, Arif I. A simple straightforward thermal decomposition synthesis of PEG-covered Gd 2 O 3 (Gd 2 O 3 @PEG) nanoparticles. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2016.06.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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33
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Petinov VI. Obtaining gadolinium nanoparticles and studying their properties in a helium flow. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2016. [DOI: 10.1134/s0036024416070232] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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34
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Fabrication of doxorubicin nanoparticles by controlled antisolvent precipitation for enhanced intracellular delivery. Colloids Surf B Biointerfaces 2016; 139:249-58. [DOI: 10.1016/j.colsurfb.2015.12.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/10/2015] [Accepted: 12/14/2015] [Indexed: 11/19/2022]
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35
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McBride K, Cook J, Gray S, Felton S, Stella L, Poulidi D. Evaluation of La1−xSrxMnO3 (0 ≤ x < 0.4) synthesised via a modified sol–gel method as mediators for magnetic fluid hyperthermia. CrystEngComm 2016. [DOI: 10.1039/c5ce01890k] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A range of lanthanum strontium manganates (La1−xSrxMnO3) where 0 ≤ x ≤ 0.4 were prepared using a modified peroxide sol–gel synthesis. The crystal structure of these materials was investigated and their potential as mediators for magnetic fluid hyperthermia was evaluated.
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Affiliation(s)
- K. McBride
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG, UK
| | - J. Cook
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG, UK
- School of Mathematics and Physics
- Queen's University Belfast
| | - S. Gray
- School of Mathematics and Physics
- Queen's University Belfast
- Belfast BT7 1NN, UK
| | - S. Felton
- School of Mathematics and Physics
- Queen's University Belfast
- Belfast BT7 1NN, UK
| | - L. Stella
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG, UK
- School of Mathematics and Physics
- Queen's University Belfast
| | - D. Poulidi
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast BT9 5AG, UK
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36
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Shahdordizadeh M, Yazdian-Robati R, Ramezani M, Abnous K, Taghdisi SM. Aptamer application in targeted delivery systems for diagnosis and treatment of breast cancer. J Mater Chem B 2016; 4:7766-7778. [DOI: 10.1039/c6tb02564a] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
In this review, we present the recent progress of aptamer application in targeted delivery systems for imaging and treatment of breast cancer.
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Affiliation(s)
- Mahin Shahdordizadeh
- Department of Pharmaceutical Biotechnology
- School of Pharmacy
- Mashhad University of Medical Sciences
- Mashhad
- Iran
| | - Rezvan Yazdian-Robati
- Department of Pharmaceutical Biotechnology
- School of Pharmacy
- Mashhad University of Medical Sciences
- Mashhad
- Iran
| | - Mohammad Ramezani
- Nanotechnology Research Center
- Mashhad University of Medical Sciences
- Mashhad
- Iran
| | - Khalil Abnous
- Pharmaceutical Research Center
- Mashhad University of Medical Sciences
- Mashhad
- Iran
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Niazi JH, Verma SK, Niazi S, Qureshi A. In vitro HER2 protein-induced affinity dissociation of carbon nanotube-wrapped anti-HER2 aptamers for HER2 protein detection. Analyst 2015; 140:243-9. [PMID: 25365825 DOI: 10.1039/c4an01665c] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A new in vitro assay was developed to detect human epidermal growth factor receptor 2 (HER2) protein, based on affinity dissociation of carbon nanotube (CNT)-wrapped anti-HER2 ssDNA aptamers. First, we selected an anti-HER2 ssDNA aptamer (H2) using an in vitro serial evolution of ligands by an exponential enrichment (SELEX) process. Then the fluorescently labelled H2 ssDNAs were tightly packed on CNTs that had previously been coupled with magnetic microbeads (MBs), forming MB-CNT-H2 hybrids. The loading capacity of these MB-CNTs heterostructures (2.8 × 10(8)) was determined to be 0.025 to 3.125 μM of H2. HER2 protein-induced H2 dissociation occurred from MB-CNT-H2 hybrids, which was specifically induced by the target HER2 protein, with a dissociation constant (Kd) of 270 nM. The stoichiometric affinity dissociation ratio with respect to H2-to-HER2 protein was shown to be approximately 1 : 1. Our results demonstrated that the developed assay can be an effective approach in detecting native forms of disease biomarkers in free solutions or in biological samples, for accurate diagnosis.
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Affiliation(s)
- Javed H Niazi
- Sabanci University Nanotechnology Research and Application Center, Orta Mah, 34956 Istanbul, Turkey.
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38
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Dan N. Compound release from core–shell carriers triggered by oscillating fields: Monte Carlo simulations. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Wang Y, Bahng JH, Che Q, Han J, Kotov NA. Anomalously Fast Diffusion of Targeted Carbon Nanotubes in Cellular Spheroids. ACS NANO 2015; 9:8231-8. [PMID: 26181892 PMCID: PMC11135955 DOI: 10.1021/acsnano.5b02595] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Understanding transport of carbon nanotubes (CNTs) and other nanocarriers within tissues is essential for biomedical imaging and drug delivery using these carriers. Compared to traditional cell cultures in animal studies, three-dimensional tissue replicas approach the complexity of the actual organs and enable high temporal and spatial resolution of the carrier permeation. We investigated diffusional transport of CNTs in highly uniform spheroids of hepatocellular carcinoma and found that apparent diffusion coefficients of CNTs in these tissue replicas are anomalously high and comparable to diffusion rates of similarly charged molecules with molecular weights 10000× lower. Moreover, diffusivity of CNTs in tissues is enhanced after functionalization with transforming growth factor β1. This unexpected trend contradicts predictions of the Stokes-Einstein equation and previously obtained empirical dependences of diffusivity on molecular mass for permeants in gas, liquid, solid or gel. It is attributed to the planar diffusion (gliding) of CNTs along cellular membranes reducing effective dimensionality of diffusional space. These findings indicate that nanotubes and potentially similar nanostructures are capable of fast and deep permeation into the tissue, which is often difficult to realize with anticancer agents.
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Affiliation(s)
- Yichun Wang
- Department of Biomedical Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
- Biointerfaces Institute, University of Michigan, North Campus Research Complex, 2800 Plymouth Road, Ann Arbor, Michigan 48109, United States
| | - Joong Hwan Bahng
- Department of Biomedical Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
- Biointerfaces Institute, University of Michigan, North Campus Research Complex, 2800 Plymouth Road, Ann Arbor, Michigan 48109, United States
| | - Quantong Che
- Department of Chemical Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Jishu Han
- Department of Chemical Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
| | - Nicholas A. Kotov
- Department of Biomedical Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
- Department of Chemical Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
- Department of Material Science & Engineering, University of Michigan, 3074 H.H. Dow Building, 2300 Hayward Street, Ann Arbor, Michigan 48109, United States
- Biointerfaces Institute, University of Michigan, North Campus Research Complex, 2800 Plymouth Road, Ann Arbor, Michigan 48109, United States
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40
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Sukhorukova IV, Zhitnyak IY, Kovalskii AM, Matveev AT, Lebedev OI, Li X, Gloushankova NA, Golberg D, Shtansky DV. Boron Nitride Nanoparticles with a Petal-Like Surface as Anticancer Drug-Delivery Systems. ACS APPLIED MATERIALS & INTERFACES 2015; 7:17217-25. [PMID: 26192448 DOI: 10.1021/acsami.5b04101] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nanoparticles (NPs) have a great potential as nanosized drug-delivery carriers. Such systems must safely deliver the drug to the site of the tumor without drug leakage, effectively penetrate inside cancer cells, and provide intracellular drug release. Herein we developed an original and simple method aimed at the fabrication of spherical boron nitride NPs (BNNPs), 100-200 nm in diameter, with peculiar petal-like surfaces via chemical vapor deposition. Such structures were found to be able to absorb a large amount of antitumor drug-killing tumor cells. They revealed low cytotoxicity and rapid cellular uptake. BNNPs were saturated with doxorubicin (DOX) and then dispersed. The BNNPs loaded with DOX (BNNPs-DOX) were stable at neutral pH but effectively released DOX at pH 4.5-5.5. MTT assay and cell growth testing showed that the BNNPs-DOX nanocarriers had been toxic for IAR-6-1 cells. BNNPs loaded with DOX penetrated into the neoplastic IAR-6-1 cells using endocytic pathways, and then DOX released into the cytoplasm and cell nuclei and resulted in cell death.
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Affiliation(s)
- Irina V Sukhorukova
- †National University of Science and Technology "MISIS", Leninsky prospect 4, Moscow 119049, Russia
| | - Irina Y Zhitnyak
- ‡N. N. Blokhin Russian Cancer Research Center, Kashirskoe shosse 24, Moscow 115478, Russia
| | - Andrey M Kovalskii
- †National University of Science and Technology "MISIS", Leninsky prospect 4, Moscow 119049, Russia
| | - Andrei T Matveev
- †National University of Science and Technology "MISIS", Leninsky prospect 4, Moscow 119049, Russia
| | - Oleg I Lebedev
- ⊥CRISMAT, UMR 6508, CNRS-ENSICAEN, 6Bd Marechal Juin, 14050 Caen, France
| | - Xia Li
- ∥National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan
| | - Natalia A Gloushankova
- ‡N. N. Blokhin Russian Cancer Research Center, Kashirskoe shosse 24, Moscow 115478, Russia
| | - Dmitri Golberg
- ∥National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan
| | - Dmitry V Shtansky
- †National University of Science and Technology "MISIS", Leninsky prospect 4, Moscow 119049, Russia
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41
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Efficiency of calcium phosphate composite nanoparticles in targeting Ehrlich carcinoma cells transplanted in mice. J Adv Res 2015; 7:143-54. [PMID: 26843980 PMCID: PMC4703481 DOI: 10.1016/j.jare.2015.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Revised: 03/29/2015] [Accepted: 04/03/2015] [Indexed: 01/18/2023] Open
Abstract
The present study aimed to investigate the mode of action of nano-CaPs in vivo as a therapy for solid tumor in mice. To achieve this goal, Ehrlich Ascites Carcinoma (EAC) was transplanted into 85 Swiss male albino mice. After nine days, the mice were divided into 9 groups. Groups 1 and 2 were allocated as the EAC control. Groups 3 and 4 were injected once intratumorally (IT) by nano-calcium phosphate (nano-CaP). Groups 5 and 6 received once intraperitoneal injection (IP) of nano-CaP. Groups 7, 8, and 9 received nano-CaP (IP) weekly. Blood samples and thigh skeletal muscle were collected after three weeks from groups 1, 3, 5, and 7 and after four weeks from groups 2, 4, 6, and 8. On the other hand, group 9 received nano-CaP (IP) for four weeks and lasted for three months to follow up the recurrence of tumor and to ensure the safety of muscle by histopathological analysis. Tumor growth was monitored twice a week throughout the experiment. DNA fragmentation of tumor cells was evaluated. In thigh tissue, noradrenaline, dopamine, serotonin (5HT), and gamma-aminobutyric acid (GABA) were measured. In serum, 8-Hydroxy-deoxyguanosine (8-OHDG), adenosine triphosphate (ATP), and vascular endothelial growth factor (VEGF) were analyzed. Histopathological and biochemical results showed a significant therapeutic effect of nano-CaP on implanted solid tumor and this effect was more pronounced in the animals treated IP for four weeks. This improvement was evident from the repair of fragmented DNA, the significant decrease of caspase-3, 8-OHDG, myosin, and VEGF, and the significant increase of neurotransmitters (NA, DA, 5HT, and GABA). Additionally, histopathological examination showed complete recovery of cancer cells in the thigh muscle after three months.
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Key Words
- 5HT, serotonin
- 8-OHDG, 8-hydroxy-deoxyguanosine
- ATP, adenosine triphosphate
- Calcium phosphate (CaP) nanoparticles
- DNA, deoxyribonucleic acid
- EAC transplantation
- EAC, Ehrlich Ascites Carcinoma
- FAK, focal adhesion kinase
- FTIR, Fourier transform infrared
- GABA, gamma aminobutyric acid
- IP, intraperitoneal
- IT, intratumoral
- MAPK, mitogen-activated protein kinase
- Nano-CaP, nano calcium phosphate
- Nanomedicine
- Neurotransmitters
- RIR, reference intensity ratio
- SEM, scanning electron microscopy
- Solid tumor
- TEM, transmission electron microscope
- VEGFR2, vascular endothelial growth factor receptor 2
- XRD, X-ray diffraction
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42
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Lim EK, Kim T, Paik S, Haam S, Huh YM, Lee K. Nanomaterials for Theranostics: Recent Advances and Future Challenges. Chem Rev 2014; 115:327-94. [DOI: 10.1021/cr300213b] [Citation(s) in RCA: 916] [Impact Index Per Article: 91.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Eun-Kyung Lim
- Department
of Radiology, Yonsei University, Seoul 120-752, Korea
- BioNanotechnology
Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Korea
| | - Taekhoon Kim
- Department
of Chemistry, Korea University, Seoul 136-701, Korea
- Electronic
Materials Laboratory, Samsung Advanced Institute of Technology, Mt. 14-1,
Nongseo-Ri, Giheung-Eup, Yongin-Si, Gyeonggi-Do 449-712, Korea
| | - Soonmyung Paik
- Severance
Biomedical Research Institute, Yonsei University College of Medicine, Seoul 120-749, Korea
- Division
of Pathology, NSABP Foundation, Pittsburgh, Pennsylvania 15212, United States
| | - Seungjoo Haam
- Department
of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Korea
| | - Yong-Min Huh
- Department
of Radiology, Yonsei University, Seoul 120-752, Korea
| | - Kwangyeol Lee
- Department
of Chemistry, Korea University, Seoul 136-701, Korea
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Hong L, Chen L, Ladika M, Li Y, Kim-Habermehl L, Bergman R. Impact of particle size and surface charge density on redispersibility of spray-dried powders. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.07.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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44
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Combined effect of silver nanoparticles and therapeutical ultrasound on ovarian carcinoma cells A2780. J Appl Biomed 2014. [DOI: 10.1016/j.jab.2014.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Abstract
Nanoparticles are rapidly being developed and trialed to overcome several limitations of traditional drug delivery systems and are coming up as a distinct therapeutics for cancer treatment. Conventional chemotherapeutics possess some serious side effects including damage of the immune system and other organs with rapidly proliferating cells due to nonspecific targeting, lack of solubility, and inability to enter the core of the tumors resulting in impaired treatment with reduced dose and with low survival rate. Nanotechnology has provided the opportunity to get direct access of the cancerous cells selectively with increased drug localization and cellular uptake. Nanoparticles can be programmed for recognizing the cancerous cells and giving selective and accurate drug delivery avoiding interaction with the healthy cells. This review focuses on cell recognizing ability of nanoparticles by various strategies having unique identifying properties that distinguish them from previous anticancer therapies. It also discusses specific drug delivery by nanoparticles inside the cells illustrating many successful researches and how nanoparticles remove the side effects of conventional therapies with tailored cancer treatment.
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46
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Surface modification and evaluation of PLGA nanoparticles: the effects on cellular uptake and cell proliferation on the HT-29 cell line. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50027-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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47
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Nanoparticles targeting mechanisms in cancer therapy: current limitations and emerging solutions. Ther Deliv 2013; 4:1197-209. [DOI: 10.4155/tde.13.75] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
It has been more than one century since Paul Ehrlich spoke about the idea of targeting specific molecules in the cell when he coined the ‘Magic Bullet‘ principle. In most occasions, we seek new pharmacodynamic models for therapy, but nanoparticles provide a chance to modify the already existing pharmacokinetics of drugs to meet needed pharmacodynamic models. In the scope of ‘nanoscale‘, every entity has different characters, and no general rules control pharmacokinetics of nanoparticulate drugs as new physical and physicochemical properties are added to equations. However, such remarkable drug models are still quite far from achieving their potential in clinical application. Among the major obstacles is that most available results in nanoparticles targeting rely upon in vitro and animal models that do not match the tumor environment characteristics in humans. This Review discusses the concept of targeting tumor cells with nanoparticles, the limitations that lead to its incomplete application in clinical practice along with some of the promising solutions to such limitations.
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48
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Cyclodextrin based nanosponges for pharmaceutical use: a review. ACTA PHARMACEUTICA (ZAGREB, CROATIA) 2013; 63:335-58. [PMID: 24152895 DOI: 10.2478/acph-2013-0021] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanosponges are a novel class of hyper-crosslinked polymer based colloidal structures consisting of solid nanoparticles with colloidal sizes and nanosized cavities. These nano-sized colloidal carriers have been recently developed and proposed for drug delivery, since their use can solubilize poorly water-soluble drugs and provide prolonged release as well as improve a drug's bioavailability by modifying the pharmacokinetic parameters of actives. Development of nanosponges as drug delivery systems, with special reference to cyclodextrin based nanosponges, is presented in this article. In the current review, attempts have been made to illustrate the features of cyclodextrin based nanosponges and their applications in pharmaceutical formulations. Special emphasis has been placed on discussing the methods of preparation, characterization techniques and applications of these novel drug delivery carriers for therapeutic purposes. Nanosponges can be referred to as solid porous particles having a capacity to load drugs and other actives into their nanocavity; they can be formulated as oral, parenteral, topical or inhalation dosage forms. Nanosponges offer high drug loading compared to other nanocarriers and are thus suitable for solving issues related to stability, solubility and delayed release of actives. Controlled release of the loaded actives and solubility enhancement of poorly water-soluble drugs are major advantages of nanosponge drug delivery systems.
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Diaz-Bleis D, Vales-Pinzón C, Freile-Pelegrín Y, Alvarado-Gil JJ. Thermal characterization of magnetically aligned carbonyl iron/agar composites. Carbohydr Polym 2013; 99:84-90. [PMID: 24274482 DOI: 10.1016/j.carbpol.2013.07.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2013] [Revised: 07/06/2013] [Accepted: 07/22/2013] [Indexed: 10/26/2022]
Abstract
Composites of magnetic particles into polymeric matrices have received increasing research interest due to their capacity to respond to external magnetic or electromagnetic fields. In this study, agar from Gelidium robustum has been chosen as natural biocompatible polymer to build the matrix of the magnetic carbonyl iron particles (CIP) for their uses in biomedical fields. Heat transfer behavior of the CIP-agar composites containing different concentrations (5, 10, 15, 20, 25 and 30% w/w) of magnetically aligned and non-aligned CIP in the agar matrix was studied using photothermal radiometry (PTR) in the back-propagation emission configuration. The morphology of the CIP-agar composites with aligned and non-aligned CIP under magnetic field was also evaluated by scanning electron microscopy (SEM). The results revealed a dominant effect of CIP concentration over the alignment patterns induced by the magnetic field, which agrees with the behavior of the thermal diffusivity and thermal conductivity. Agar served as a perfect matrix to be used with CIP, and CIP-agar composites magnetically aligned at 20% CIP concentration can be considered as promising 'smart' material for hyperthermia treatments in the biomedical field.
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Affiliation(s)
- D Diaz-Bleis
- Marine Resources Department, CINVESTAV-Mérida, Antigua Carretera a Progreso Km. 6, A.P. 97310 Mérida, Yucatán, Mexico
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50
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Sun P, Cao X, Sun H, Sun M, He M. Spatial pattern characterization of linear polarization-sensitive backscattering Mueller matrix elements of human serum albumin sphere suspension. J Biol Phys 2013; 39:501-14. [PMID: 23860923 DOI: 10.1007/s10867-013-9308-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 02/18/2013] [Indexed: 11/30/2022] Open
Abstract
Human serum albumin (HSA) nanometer or micron particles represent promising drug-carrier systems. The azimuthal and radial variations of a linear polarization-sensitive backscattering Mueller matrix were experimentally studied in two cases: the scattering particle was smaller or larger in size to the probing wavelength of 780 nm. The results show that the twofold and fourfold structures are characteristic of small particle size suspension, whereas the eightfold structure is characteristic of large particle size suspension. Moreover, for both particle size suspensions, the element patterns have strong radial dependence when the suspension concentration and the incident power of laser change. In addition, for both particle size suspensions, the rotational symmetry of each element is lost in the case of oblique incidence but the multifold structure is maintained. Some suggestions for applications of Mueller matrix imaging in biomedical optics are provided.
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Affiliation(s)
- Ping Sun
- Department of Physics, Beijing Area Major Laboratory of Applied Optics, Beijing Normal University, Beijing, 100875, China.
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