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Li H, Li M, Zhang S, Chen M, Wang J. Packaged europium/fluorescein-based hydrogen bond organic framework as ratiometric fluorescent probe for visual real-time monitoring of seafood freshness. Talanta 2024; 272:125809. [PMID: 38382300 DOI: 10.1016/j.talanta.2024.125809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 01/30/2024] [Accepted: 02/15/2024] [Indexed: 02/23/2024]
Abstract
The freshness of sea food has always been the focus of attention from consumers, and food-safety issues are in urgent need of efficient approaches. A HOF-based ratiometric fluorescence probe (HOF-FITC/Eu) featuring superior amine-response, offers the real-time and visual detection of seafood freshness. Via intermolecular hydrogen bond interaction to form hydrogen-bonded organic frameworks (HOFs), which serve as a structural basis for the conjugate loading of pH-sensitive fluorescein (5-FITC) and coordination doping of lanthanide Eu3+. Amine vapors stimulate the dual-wavelength (525 nm and 616 nm) characteristic fluorescence of HOF-FITC/Eu with an inverse trend, resulting in an increase of the ratio of I525 to I616 accompanied by a distinct color transition from red to green. Prepared HOF-FITC/Eu featuring sensitive red-green color change characteristics of amine response are readily dripped into composite films of filter paper through integrated smartphone and 254 nm UV lamp as mobile observation devices to on-site monitor the freshness of raw fish and shrimp samples. The intelligent food probe HOF-FITC/Eu opens a novel material assembly type for fluorescence sensing and a potential pathway for other functional materials in the field of investigational food.
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Affiliation(s)
- Haiyan Li
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Min Li
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Shangqing Zhang
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China
| | - Mingli Chen
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
| | - Jianhua Wang
- Department of Chemistry, Research Center for Analytical Sciences, College of Sciences, Northeastern University, Box 332, Shenyang, 110819, China.
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2
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Abstract
The ability to generate stable, spatiotemporally controllable concentration gradients is critical for both electrokinetic and biological applications such as directional wetting and chemotaxis. Electrochemical techniques for generating solution and surface gradients display benefits such as simplicity, controllability, and compatibility with automation. Here, we present an exploratory study for generating microscale spatiotemporally controllable gradients using a reaction-free electrokinetic technique in a microfluidic environment. Methanol solutions with ionic fluorescein isothiocyanate (FITC) molecules were used as an illustrative electrolyte. Spatially nonuniform alternating current (AC) electric fields were applied using hafnium dioxide (HfO2)-coated Ti/Au electrode pairs. Results from spatial and temporal analyses along with control experiments suggest that the FITC ion concentration gradient in bulk fluid (over 50 μm from the electrode) was established due to spatial variation of electric field density, and was independent of electrochemical reactions at the electrode surface. The established ion concentration gradients depended on both amplitudes and frequencies of the oscillating AC electric field. Overall, this work reports a novel approach for generating stable and spatiotemporally tunable gradients in a microfluidic chamber using a reaction-free electrochemical methodology.
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Affiliation(s)
- Ran An
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, United States
- Mechanical and Aerospace Engineering Department, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Adrienne R Minerick
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, United States
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3
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Wang Q, Zheng L, Wu K, Zhang B. Identification and Validation of a New Peptide Targeting Pancreatic Beta Cells. Molecules 2022; 27:molecules27072286. [PMID: 35408679 PMCID: PMC9000318 DOI: 10.3390/molecules27072286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/19/2022] [Accepted: 03/22/2022] [Indexed: 11/20/2022] Open
Abstract
Noninvasive targeted visualization of pancreatic beta cells or islets is becoming the focus of molecular imaging application in diabetes and islet transplantation studies. In this study, we aimed to produce the beta-cell-targeted peptide for molecular imaging of islet. We used phage display libraries to screen a beta-cell-targeted peptide, LNTPLKS, which was tagged with fluorescein isothiocyanate (FITC). This peptide was validated for targeting beta-cell with in vitro and in vivo studies. Immunocytochemistry (ICC) and fluorescence-activated cell sorting (FACS) analysis were used to validate the target specificity of the peptide. FITC-LNTPLKS displayed much higher fluorescence in beta cells vs. control cells in ICC. This discrimination was consistently observed using primary rodent islet. FACS analysis showed right shift of peak point in beta cells compared to control cells. The specific bind to in situ islet was verified by in vitro experiments using rodent and human pancreatic slices. The peptide also showed high affinity of islet grafts under the renal capsule. In the insulinoma animal model, we could find FITC-LNTPLKS accumulated specifically to the tumor, thus indicating a potential clinical application of molecular imaging of insulinoma. In conclusion, LNTPLKS showed a specific probe for beta-cells, which might be further utilized in targeted imaging/monitoring beta cells and theragnosis for beta-cells-related disease (diabetes, insulinoma, etc.).
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Affiliation(s)
- Qianwen Wang
- Department of Surgery, Fourth Affiliated Hospital, School of Medicine, Zhejiang University, Yiwu 322000, China;
| | - Lei Zheng
- Department of Emergency Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China;
| | - Kangze Wu
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China;
| | - Bo Zhang
- Department of Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China;
- Correspondence:
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Xing H, Zhan Q, Li X, Li S, Li L, Zhao J, Hou X, Yuan X. "Sustained irrigation" effect enhanced the accumulation and retention of ultra-long circulating nanoparticles in tumor. Biochem Biophys Res Commun 2022; 595:82-88. [PMID: 35104704 DOI: 10.1016/j.bbrc.2022.01.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 01/24/2022] [Indexed: 11/28/2022]
Abstract
The development of ultra-long circulating nanodrug delivery systems have showed distinct advantage in maintaining the long-lasting tumor retention. Although the relationship between extended tumor retention and ultra-long plasma half-life was apparent, there was still a lack of experimental evidence to reveal the enhancement mechanism. Herein, we proposed a concept of "Sustained Irrigation" effect ("SI" effect) to elucidate that it was through sustained blood irrigation that the ultra-long circulating nanoparticles achieved long-lasting tumor retention. Besides, in order to intuitively verify the "SI" effect, we developed an "ON-OFF-ON" fluorescence switch technology. The ultra-long circulating delivery nanoparticle was constructed by encapsulating the protein with hydrophilic polymer shell. Nanoparticles with ultra-long plasma half-life (t1/2>40 h) fabricated by this method were employed as models for demonstrating the "SI" effect. The recovery of Cy5.5 fluorescence after the laser quenching meant the "fresh" Cy5.5-labeled nanoparticles were entering tumor, which confirmed the ultra-long circulating nanoparticles in blood could sustainedly irrigate to tumor. Our finding revealed the key mechanism by which ultra-long circulating NDDSs enhanced the tumor accumulation and retention, and provided experimental support for the development of ultra-long circulating delivery system in clinic.
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Affiliation(s)
- Huike Xing
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Qi Zhan
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Xueping Li
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Sidi Li
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Lijie Li
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China
| | - Jin Zhao
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China.
| | - Xin Hou
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China.
| | - Xubo Yuan
- Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China; School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China.
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5
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Srikantha N, Teijeiro-Gonzalez Y, Simpson A, Elsaid N, Somavarapu S, Suhling K, Jackson TL. Determining vitreous viscosity using fluorescence recovery after photobleaching. PLoS One 2022; 17:e0261925. [PMID: 35143514 PMCID: PMC8830689 DOI: 10.1371/journal.pone.0261925] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 12/14/2021] [Indexed: 01/22/2023] Open
Abstract
PURPOSE Vitreous humor is a complex biofluid whose composition determines its structure and function. Vitreous viscosity will affect the delivery, distribution, and half-life of intraocular drugs, and key physiological molecules. The central pig vitreous is thought to closely match human vitreous viscosity. Diffusion is inversely related to viscosity, and diffusion is of fundamental importance for all biochemical reactions. Fluorescence Recovery After Photobleaching (FRAP) may provide a novel means of measuring intravitreal diffusion that could be applied to drugs and physiological macromolecules. It would also provide information about vitreous viscosity, which is relevant to drug elimination, and delivery. METHODS Vitreous viscosity and intravitreal macromolecular diffusion of fluorescently labelled macromolecules were investigated in porcine eyes using fluorescence recovery after photobleaching (FRAP). Fluorescein isothiocyanate conjugated (FITC) dextrans and ficolls of varying molecular weights (MWs), and FITC-bovine serum albumin (BSA) were employed using FRAP bleach areas of different diameters. RESULTS The mean (±standard deviation) viscosity of porcine vitreous using dextran, ficoll and BSA were 3.54 ± 1.40, 2.86 ± 1.13 and 4.54 ± 0.13 cP respectively, with an average of 3.65 ± 0.60 cP. CONCLUSIONS FRAP is a feasible and practical optical method to quantify the diffusion of macromolecules through vitreous.
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Affiliation(s)
- Nishanthan Srikantha
- School of Medicine, King’s College London, London, United Kingdom
- Department of Ophthalmology, King’s College Hospital, London, United Kingdom
- * E-mail:
| | | | - Andrew Simpson
- School of Medicine, King’s College London, London, United Kingdom
- Department of Ophthalmology, King’s College Hospital, London, United Kingdom
| | - Naba Elsaid
- Anglia Ruskin University, Bishop Hall Lane, Chelmsford, United Kingdom
| | - Satyanarayana Somavarapu
- Department of Pharmaceutics, University College London School of Pharmacy, London, United Kingdom
| | - Klaus Suhling
- Department of Physics, King’s College London, Strand, London, United Kingdom
| | - Timothy L. Jackson
- School of Medicine, King’s College London, London, United Kingdom
- Department of Ophthalmology, King’s College Hospital, London, United Kingdom
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Gao SQ, Yuan H, Yang XZ, Xiang HF, Tan X, Wen GB, Lin YW. Improving the cell-membrane-penetrating activity of globins by introducing positive charges on protein surface: A case study of sperm whale myoglobin. Biochem Biophys Res Commun 2022; 598:26-31. [PMID: 35151200 DOI: 10.1016/j.bbrc.2022.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/05/2022] [Indexed: 11/18/2022]
Abstract
Globins are heme proteins such as hemoglobin (Hb), myoglobin (Mb) and neuroglobin (Ngb), playing important roles in biological system. In addition to normal functions, zebrafish Ngb was able to penetrate cell membranes, whereas less was known for other globin members. In this study, to improve the cell-membrane-penetrating activity of globins, we used sperm whale Mb as a model protein and constructed a quadruple mutant of G5K/Q8K/A19K/V21K Mb (termed 4K Mb), by introduction of four positive charges on the protein surface, which was designed according to the amino acid alignment with that of zebrafish Ngb. Spectroscopic and crystallographic studies showed that the four positively charged Lys residues did not affect the protein structure. Cell-membrane-penetrating essay further showed that 4K Mb exhibited enhanced activity compared to that of native Mb. This study provides valuable information for the effect of distribution of charged residues on the protein structure and the cell-membrane-penetrating activity of globins. Therefore, it will guide the design of protein-based biomaterials for biological applications.
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Affiliation(s)
- Shu-Qin Gao
- Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Hong Yuan
- Department of Chemistry & Institute of Biomedical Science, Fudan University, Shanghai, 200433, China
| | - Xin-Zhi Yang
- Hengyang Medical School, University of South China, Hengyang, 421001, China
| | - Heng-Fang Xiang
- Key Lab of Protein Structure and Function of Universities in Hunan Province, University of South China, Hengyang, 421001, China
| | - Xiangshi Tan
- Department of Chemistry & Institute of Biomedical Science, Fudan University, Shanghai, 200433, China
| | - Ge-Bo Wen
- Hengyang Medical School, University of South China, Hengyang, 421001, China; Key Lab of Protein Structure and Function of Universities in Hunan Province, University of South China, Hengyang, 421001, China.
| | - Ying-Wu Lin
- Hengyang Medical School, University of South China, Hengyang, 421001, China; Key Lab of Protein Structure and Function of Universities in Hunan Province, University of South China, Hengyang, 421001, China.
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Wu J, Shin H, Lee J, Kim S, Lee H. Preparation of External Stimulus-Free Gelatin-Catechol Hydrogels with Injectability and Tunable Temperature Responsiveness. ACS Appl Mater Interfaces 2022; 14:236-244. [PMID: 34935360 DOI: 10.1021/acsami.1c19151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Gelatin is one of the most versatile biopolymers in various biomedical applications. A gelatin derivative gelatin-catechol (Gel-C) was developed in this study to further optimize its chemical and physical properties such as thermal reversibility and injectability. We found that Gel-C remains in a solution state at room temperature, and the temperature-dependent gelation capability of gelatin is well preserved in Gel-C. Its gel-forming temperature decreased to about 10 °C (about 30 °C for gelatin), and a series of gelatin derivatives with different gel-forming temperatures (10-30 °C) were formed by mixing gelatin and Gel-C in different ratios. Additionally, irreversible Gel-C hydrogels could be made without the addition of external stimuli by combining the physical cross-linking of gelatin and the chemical cross-linking of catechol. At the same time, properties of Gel-C hydrogels such as thermal reversibility and injectability could be manipulated by controlling the temperature and pH of the precursor solution. By simulating the formation of an irreversible Gel-C hydrogel in vivo, an in situ gelling system was fabricated by lowering the local temperature of the hydrogel with cold shock, thus realizing targeted and localized molecular delivery with prolonged retention time. This simple system integrated with the temperature responsiveness of gelatin and chemical cross-linking of catechol groups thus provides a promising platform to fabricate an in situ gelling system for drug delivery.
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Affiliation(s)
- Jingxian Wu
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 University Road, Daejeon 34141, Republic of Korea
| | - Honggeun Shin
- R&D Center, InnoTherapy Inc., Seoul 34028, Republic of Korea
| | - Jeehee Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 University Road, Daejeon 34141, Republic of Korea
| | - Soomi Kim
- R&D Center, InnoTherapy Inc., Seoul 34028, Republic of Korea
| | - Haeshin Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), 291 University Road, Daejeon 34141, Republic of Korea
- R&D Center, InnoTherapy Inc., Seoul 34028, Republic of Korea
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8
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Luo R, Wan Y, Luo X, Liu G, Li Z, Chen J, Su D, Lu N, Luo Z. A Rapid Self-Assembly Peptide Hydrogel for Recruitment and Activation of Immune Cells. Molecules 2022; 27:molecules27020419. [PMID: 35056735 PMCID: PMC8779634 DOI: 10.3390/molecules27020419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/22/2021] [Accepted: 01/04/2022] [Indexed: 12/17/2022] Open
Abstract
Self-assembly peptide nanotechnology has attracted much attention due to its regular and orderly structure and diverse functions. Most of the existing self-assembly peptides can form aggregates with specific structures only under specific conditions and their assembly time is relatively long. They have good biocompatibility but no immunogenicity. To optimize it, a self-assembly peptide named DRF3 was designed. It contains a hydrophilic and hydrophobic surface, using two N-terminal arginines, leucine, and two c-terminal aspartate and glutamic acid. Meanwhile, the c-terminal of the peptide was amidated, so that peptide segments were interconnected to increase diversity. Its characterization, biocompatibility, controlled release effect on antigen, immune cell recruitment ability, and antitumor properties were examined here. Congo red/aniline blue staining revealed that peptide hydrogel DRF3 could be immediately gelled in PBS. The stable β-sheet secondary structure of DRF3 was confirmed by circular dichroism spectrum and IR spectra. The observation results of cryo-scanning electron microscopy, transmission electron microscopy, and atomic force microscopy demonstrated that DRF3 formed nanotubule-like and vesicular structures in PBS, and these structures interlaced with each other to form ordered three-dimensional nanofiber structures. Meanwhile, DRF3 showed excellent biocompatibility, could sustainably and slowly release antigens, recruit dendritic cells and promote the maturation of dendritic cells (DCs) in vitro. In addition, DRF3 has a strong inhibitory effect on clear renal cell carcinoma (786-0). These results provide a reliable basis for the application of peptide hydrogels in biomedical and preclinical trials.
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Kwak MH, Yang SM, Yun SK, Kim S, Choi MG, Park JM. Identification and validation of LGR5-binding peptide for molecular imaging of gastric cancer. Biochem Biophys Res Commun 2021; 580:93-99. [PMID: 34628260 DOI: 10.1016/j.bbrc.2021.09.073] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/28/2021] [Indexed: 12/27/2022]
Abstract
Leucine-rich repeat-containing G-protein coupled receptor 5 (LGR5) is a stem cell marker in gastric cancer. In this study, we aimed to produce the LGR5-targeting peptide probe for the use of molecular imaging for gastric cancer. We used phage display libraries to produce a LGR5-specific peptide probe. This peptide was validated for targeting gastric cancer with in vitro and in vivo studies. This peptide was tagged with fluorescein isothiocyanate (FITC) and cyanine 5.5 (Cy5.5). We used two normal and three gastric cancer cell lines. Immunocytochemistry (ICC) and fluorescence-activated cell sorting (FACS) analysis were used to validate the target specificity of the peptide. After three rounds of bio-panning, we found a novel 7-mer peptides, IPQILSI (IPQ∗). FITC-conjugated IPQ∗ showed 2 to 10 times higher fluorescence in gastric cancer cells vs. control cells in ICC. This discrimination was consistently observed using Cy5.5-conjugated IPQ∗ in ICC. FACS analysis showed right shift of peak point in gastric cancers compared to the control cells. In the peritoneal metastasis animal model, we could find Cy5.5-conjugated IPQ∗ accumulated specifically to gastric tumors. In conclusion, IPQ∗ peptide showed a specific probe for gastric cancer diagnosis. This probe can be applied to theragnosis for gastric cancer diagnosis including peritoneal metastasis.
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Affiliation(s)
- Moon Hwa Kwak
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Medical Life Sciences, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seung Mok Yang
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Seul Ki Yun
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Medical Life Sciences, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Sol Kim
- Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Myung-Gyu Choi
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea
| | - Jae Myung Park
- Catholic Photomedicine Research Institute, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea.
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10
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Zhang S, Ren Q, Novick SJ, Strutzenberg TS, Griffin PR, Bao H. One-step construction of circularized nanodiscs using SpyCatcher-SpyTag. Nat Commun 2021; 12:5451. [PMID: 34521837 PMCID: PMC8440770 DOI: 10.1038/s41467-021-25737-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 08/26/2021] [Indexed: 02/07/2023] Open
Abstract
Circularized nandiscs (cNDs) exhibit superb monodispersity and have the potential to transform functional and structural studies of membrane proteins. In particular, cNDs can stabilize large patches of lipid bilayers for the reconstitution of complex membrane biochemical reactions, enabling the capture of crucial intermediates involved in synaptic transmission and viral entry. However, previous methods for building cNDs require multiple steps and suffer from low yields. We herein introduce a simple, one-step approach to ease the construction of cNDs using the SpyCatcher-SpyTag technology. This approach increases the yield of cNDs by over 10-fold and is able to rapidly generates cNDs with diameters ranging from 11 to over 100 nm. We demonstrate the utility of these cNDs for mechanistic interrogations of vesicle fusion and protein-lipid interactions that are unattainable using small nanodiscs. Together, the remarkable performance of SpyCatcher-SpyTag in nanodisc circularization paves the way for the use of cNDs in membrane biochemistry and structural biology.
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Affiliation(s)
- Shanwen Zhang
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida, USA
| | - Qian Ren
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida, USA
| | - Scott J Novick
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida, USA
| | | | - Patrick R Griffin
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida, USA.
| | - Huan Bao
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, Florida, USA.
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11
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Yu-Hao D, Chun C, Xiong F, Rui-Hai L. Study on the pharmacokinetics of mulberry fruit polysaccharides through fluorescence labeling. Int J Biol Macromol 2021; 186:462-471. [PMID: 34271042 DOI: 10.1016/j.ijbiomac.2021.07.075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/06/2021] [Accepted: 07/11/2021] [Indexed: 01/25/2023]
Abstract
A sensitive and efficient fluorescence labeling method was developed and validated for the microanalysis and detection of polysaccharides. Fluorescein isothiocyanate (FITC) was successfully labeled on mulberry fruit polysaccharides (MFP) through a reductive amination reaction with the assistant of tyramine. The fluorescent labeled polysaccharides (FMFP) was identified by fluorescence, UV-visible, flourier transform infrared (FT-IR) and 1H NMR spectrum. Results demonstrated that the labeling efficiency of FMFP was 0.32%, and the FMFP was stable in simulated digestion fluid without cytotoxicity. The pharmacokinetics and biodistribution after administration were analyzed in rats, which indicated that the FMFP obtained could be absorbed in a short time (tmax 0.50 h) but eliminated slowly (t1/2 8.77 ± 1.38 h). At 24 h after administration, the polysaccharide could be tested mainly in intestine, stomach, liver and kidney. The FITC labeling method lays a foundation for investigating the absorption and metabolism of MFP, and provides references for the microanalysis research of bioactive polysaccharides.
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Affiliation(s)
- Dong Yu-Hao
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Chen Chun
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Guangzhou Institute of Modern Industrial Technology, Nansha, 511458, China; School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Vegetable Protein Processing Ministry of Education, South China University of Technology, Guangzhou 510640, China.
| | - Fu Xiong
- SCUT-Zhuhai Institute of Modern Industrial Innovation, School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Guangzhou Institute of Modern Industrial Technology, Nansha, 511458, China; Overseas Expertise Introduction Center for Discipline Innovation of Food Nutrition and Human Health (111 Center), Guangzhou 510640, China.
| | - Liu Rui-Hai
- Department of Food Science, Stocking Hall, Cornell University, Ithaca, NY 14853, USA
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12
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Barua S, Sim AY, Kim JY, Shin I, Lee JE. Maintenance of the Neuroprotective Function of the Amino Group Blocked Fluorescence-Agmatine. Neurochem Res 2021; 46:1933-1940. [PMID: 33914233 PMCID: PMC8254702 DOI: 10.1007/s11064-021-03319-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/21/2021] [Accepted: 04/02/2021] [Indexed: 11/23/2022]
Abstract
Agmatine, an endogenous derivative of arginine, has been found to be effective in treating idiopathic pain, convulsion, stress-mediated behavior, and attenuate the withdrawal symptoms of drugs like morphine. In the early stages of ischemic brain injury in animals, exogenous agmatine treatment was found to be neuroprotective. Agmatine is also considered as a putative neurotransmitter and is still an experimental drug. Chemically, agmatine is called agmatine 1-(4-aminobutyl guanidine). Crystallographic study data show that positively-charged guanidine can bind to the protein containing Gly and Asp residues, and the amino group can interact with the complimentary sites of Glu and Ser. In this study, we blocked the amino end of the agmatine by conjugating it with FITC, but the guanidine end was unchanged. We compared the neuroprotective function of the agmatine and agmatine-FITC by treating them in neurons after excitotoxic stimulation. We found that even the amino end blocked neuronal viability in the excitotoxic condition, by NMDA treatment for 1 h, was increased by agmatine-FITC, which was similar to that of agmatine. We also found that the agmatine-FITC treatment reduced the expression of nitric oxide production in NMDA-treated cells. This study suggests that even if the amino end of agmatine is blocked, it can perform its neuroprotective function.
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Affiliation(s)
- Sumit Barua
- Department of Anatomy, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-gu, Seoul, 03722 Korea
| | - A Young Sim
- Department of Anatomy, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-gu, Seoul, 03722 Korea
- BK21 Plus Project for Medical Sciences, Yonsei University College of Medicine, Seoul, 03722 Korea
| | - Jong Youl Kim
- Department of Anatomy, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-gu, Seoul, 03722 Korea
| | - Injae Shin
- Department of Chemistry, Yonsei University, Seoul, 03722 Korea
| | - Jong Eun Lee
- Department of Anatomy, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-gu, Seoul, 03722 Korea
- BK21 Plus Project for Medical Sciences, Yonsei University College of Medicine, Seoul, 03722 Korea
- Brain Research Institute, Yonsei University College of Medicine, Seoul, 03722 Korea
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Van Hoeck J, Van de Vyver T, Harizaj A, Goetgeluk G, Merckx P, Liu J, Wels M, Sauvage F, De Keersmaecker H, Vanhove C, de Jong OG, Vader P, Dewitte H, Vandekerckhove B, Braeckmans K, De Smedt SC, Raemdonck K. Hydrogel-Induced Cell Membrane Disruptions Enable Direct Cytosolic Delivery of Membrane-Impermeable Cargo. Adv Mater 2021; 33:e2008054. [PMID: 34106486 DOI: 10.1002/adma.202008054] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Intracellular delivery of membrane-impermeable cargo offers unique opportunities for biological research and the development of cell-based therapies. Despite the breadth of available intracellular delivery tools, existing protocols are often suboptimal and alternative approaches that merge delivery efficiency with both biocompatibility, as well as applicability, remain highly sought after. Here, a comprehensive platform is presented that exploits the unique property of cationic hydrogel nanoparticles to transiently disrupt the plasma membrane of cells, allowing direct cytosolic delivery of uncomplexed membrane-impermeable cargo. Using this platform, which is termed Hydrogel-enabled nanoPoration or HyPore, the delivery of fluorescein isothiocyanate (FITC)-dextran macromolecules in various cancer cell lines and primary bovine corneal epithelial cells is convincingly demonstrated. Of note, HyPore demonstrates efficient FITC-dextran delivery in primary human T cells, outperforming state-of-the-art electroporation-mediated delivery. Moreover, the HyPore platform enables cytosolic delivery of functional proteins, including a histone-binding nanobody as well as the enzymes granzyme A and Cre-recombinase. Finally, HyPore-mediated delivery of the MRI contrast agent gadobutrol in primary human T cells significantly improves their T1 -weighted MRI signal intensities compared to electroporation. Taken together, HyPore is proposed as a straightforward, highly versatile, and cost-effective technique for high-throughput, ex vivo manipulation of primary cells and cell lines.
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Affiliation(s)
- Jelter Van Hoeck
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Thijs Van de Vyver
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Aranit Harizaj
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Glenn Goetgeluk
- Department of Diagnostic Sciences, Ghent University, Corneel Heymanslaan 10, Ghent, 9000, Belgium
| | - Pieterjan Merckx
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Jing Liu
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Mike Wels
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Félix Sauvage
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Herlinde De Keersmaecker
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
- Centre for Advanced Light Microscopy, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Christian Vanhove
- Infinity Lab, Medical Imaging and Signal Processing Group-IBiTech, Faculty of Engineering and Architecture, Ghent University, Corneel Heymanslaan 10, Ghent, 9000, Belgium
| | - Olivier G de Jong
- CDL Research, Division LAB, UMC Utrecht, Faculty of Medicine, Utrecht University, Heidelberglaan 100, Utrecht, 3584 CX, The Netherlands
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences (UIPS), Faculty of Science, Utrecht University, Universiteitsweg 99, Utrecht, 3584 CG, The Netherlands
| | - Pieter Vader
- CDL Research, Division LAB, UMC Utrecht, Faculty of Medicine, Utrecht University, Heidelberglaan 100, Utrecht, 3584 CX, The Netherlands
| | - Heleen Dewitte
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Bart Vandekerckhove
- Department of Diagnostic Sciences, Ghent University, Corneel Heymanslaan 10, Ghent, 9000, Belgium
| | - Kevin Braeckmans
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
- Centre for Advanced Light Microscopy, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Stefaan C De Smedt
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
- Centre for Advanced Light Microscopy, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
| | - Koen Raemdonck
- Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, 9000, Belgium
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Wang Y, Xu M, Yang N, Gao S, Li S, Zhang J, Bi Y, Ren S, Hou Y, Jiang M, Liu J, Hu Y, Gao L, Cao F. A Thrombin-Responsive Nanoprobe for In Vivo Visualization of Thrombus Formation through Three-Dimensional Optical/Computed Tomography Hybrid Imaging. ACS Appl Mater Interfaces 2021; 13:27814-27824. [PMID: 34102839 DOI: 10.1021/acsami.1c04065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Early spontaneous detection of thrombin activation benefits precise theranostics for thrombotic vascular disease. Herein, a thrombin-responsive nanoprobe conjugated by a FITC dye, PEGylated Fe3O4 nanoparticles, and a thrombin-sensitive peptide (LASG) was constructed to visualize thrombin activation and subsequent thrombosis in vivo. The FITC dye was linked to the LASG coated on the Fe3O4 nanoparticles for sensing the thrombin activity via the Förster resonance energy transfer effect. In vitro fluorescence imaging showed that the fluorescence signal intensity increased significantly after incubation with thrombin in contrast to that of the control group (p < 0.05), and the signal intensity was enhanced with the increase in thrombin concentration. Further in vivo fluorescence imaging also revealed that the signal elevated markedly in the left common carotid artery (LCCA) lesion of the mice thrombosis model after nanoprobe injection, in contrast to that of the control + nanoprobe group (p < 0.05). Moreover, the thrombin inhibitor bivalirudin could decrease the filling defect of the LCCA. Three-dimensional fusion images of micro-CT and fluorescence confirmed that filling defects in the LCCA were nicely colocalized with fluorescence signal caused by nanoprobes. The nanoplatform based on a thrombin-activatable visualization system could provide smart responsive and dynamic imaging of thrombosis in vivo.
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Affiliation(s)
- Yabin Wang
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Mengqi Xu
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Ning Yang
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Shan Gao
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Sulei Li
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Jibin Zhang
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Yiming Bi
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Shenghan Ren
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education and School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
| | - Yi Hou
- Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Min Jiang
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Junsong Liu
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Yazhuo Hu
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Lei Gao
- Engineering Research Center of Molecular and Neuro Imaging of Ministry of Education and School of Life Science and Technology, Xidian University, Xi'an, Shaanxi 710071, China
- Department of Cardiology, 1st Medical Center of Chinese PLA General Hospital, Beijing 100853, China
| | - Feng Cao
- Department of Cardiology &National Clinical Research Center of Geriatric Disease, 2nd Medical Center of Chinese PLA General Hospital, Beijing 100853, China
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Wang J, Li D, Ye Y, Qiu Y, Liu J, Huang L, Liang B, Chen B. A Fluorescent Metal-Organic Framework for Food Real-Time Visual Monitoring. Adv Mater 2021; 33:e2008020. [PMID: 33690942 DOI: 10.1002/adma.202008020] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 02/03/2021] [Indexed: 05/20/2023]
Abstract
Due to increasing food-safety issues, exploiting efficient approaches for food quality assessment and instrumentation has attracted concerns worldwide. Herein, a smart evaluation system based on a fluorescent metal-organic framework (MOF) is developed for real-time visual monitoring of food freshness. Via post-synthetic modification, a ratiometric fluorescent MOF probe is constructed by covalently coupling fluorescein 5-isothiocyanate (5-FITC) with NH2 -rich lanthanide MOF. The probes exhibit a dual-emissive-responsive to biogenic amine, resulting in an increase in FITC emission along with a decrease in Eu3+ emission accompanied by a clear distinguishable color transition from orange red to green. After doping the probes on a flexible substrate, the obtained MOF composite film can be integrated with a smartphone-based portable platform easily. It is proved that this smart evaluation system can be used for on-site inspection of the freshness of raw fish samples. This work develops a fluorescent MOF-based smart evaluation system as a novel platform for application in food monitoring, which not only has enormous economic value but also holds great public health significance.
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Affiliation(s)
- Jing Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Daquan Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Yingxiang Ye
- Department of Chemistry, University of North Texas, Denton, TX, 76201, USA
| | - Yu Qiu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Jiawei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Liang Huang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, P. R. China
| | - Bin Liang
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, 78249, USA
| | - Banglin Chen
- Department of Chemistry, University of Texas at San Antonio, San Antonio, TX, 78249, USA
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Rainone P, De Palma A, Sudati F, Roffia V, Rigamonti V, Salvioni L, Colombo M, Ripamonti M, Spinelli AE, Mazza D, Mauri P, Moresco RM, Prosperi D, Belloli S. 99mTc-Radiolabeled Silica Nanocarriers for Targeted Detection and Treatment of HER2-Positive Breast Cancer. Int J Nanomedicine 2021; 16:1943-1960. [PMID: 33727808 PMCID: PMC7954038 DOI: 10.2147/ijn.s276033] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/24/2020] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION The overexpression of Human Epidermal Growth Factor Receptor 2 (HER2) is usually associated with aggressive and infiltrating breast cancer (BC) phenotype, and metastases. Functionalized silica-based nanocarriers (SiNPs) can be labeled for in vivo imaging applications and loaded with chemotherapy drugs, making possible the simultaneous noninvasive diagnosis and treatment (theranostic) for HER2-positive BC. METHODS Firstly, FITC-filled SiNPs, were engineered with two different amounts of Hc-TZ (trastuzumab half-chain) per single nanoparticle (1:2 and 1:8, SiNPs to Hc-TZ ratio), which was 99mTc-radiolabeled at histidine residues for ex vivo and in vivo biodistribution evaluations. Secondly, nanoparticles were loaded with DOX and their in vitro and ex vivo/in vivo delivery was assessed, in comparison with liposomal Doxorubicin (Caelyx). Finally, the treatment efficacy of DOX-SiNPs-TZ (1:8 Hc-TZ) was evaluated in vivo by PET and supported by MS-based proteomics profiling of tumors. RESULTS SiNPs-TZ (1:8 Hc-TZ) tumor uptake was significantly greater than that of SiNPs-TZ (1:2 Hc-TZ) at 6 hours post-injection (p.i.) in ex vivo biodistribution experiment. At 24 h p.i., radioactivity values remained steady. Fluorescence microscopy, confirmed the presence of radiolabeled SiNPs-TZ (1:8 Hc-TZ) within tumor even at later times. SiNPs-TZ (1:8 Hc-TZ) nanoparticles loaded with Doxorubicin (DOX-SiNPs-TZ) showed a similar DOX delivery capability than Caelyx (at 6 h p.i.), in in vitro and ex vivo assays. Nevertheless, at the end of treatment, tumor volume was significantly reduced by DOX-SiNPs-TZ (1:8 Hc-TZ), compared to Caelyx and DOX-SiNPs treatment. Proteomics study identified 88 high stringent differentially expressed proteins comparing the three treatment groups with controls. CONCLUSION These findings demonstrated a promising detection specificity and treatment efficacy for our system (SiNPs-TZ, 1:8 Hc-TZ), encouraging its potential use as a new theranostic agent for HER2-positive BC lesions. In addition, proteomic profile confirmed that a set of proteins, related to tumor aggressiveness, were positively affected by targeted nanoparticles.
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Affiliation(s)
- Paolo Rainone
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, 20900, Italy
- Institute of Molecular Bioimaging and Physiology of CNR, Segrate, 20090, Italy
- Doctorate School of Molecular and Translational Medicine, University of Milan, Milan, Italy
| | | | - Francesco Sudati
- PET and Nuclear Medicine Unit, San Raffaele Scientific Institute, Milan, 20132, Italy
| | - Valentina Roffia
- Institute of Biomedical Technologies of CNR, Segrate, 20090, Italy
| | - Valentina Rigamonti
- NanoBioLab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, 20126, Italy
| | - Lucia Salvioni
- NanoBioLab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, 20126, Italy
| | - Miriam Colombo
- NanoBioLab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, 20126, Italy
| | - Marilena Ripamonti
- Institute of Molecular Bioimaging and Physiology of CNR, Segrate, 20090, Italy
| | | | - Davide Mazza
- Experimental Imaging Center, San Raffaele Scientific Institute, Milan, 20132, Italy
| | - Pierluigi Mauri
- Institute of Biomedical Technologies of CNR, Segrate, 20090, Italy
| | - Rosa Maria Moresco
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, 20900, Italy
- Institute of Molecular Bioimaging and Physiology of CNR, Segrate, 20090, Italy
- Experimental Imaging Center, San Raffaele Scientific Institute, Milan, 20132, Italy
| | - Davide Prosperi
- NanoBioLab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, 20126, Italy
| | - Sara Belloli
- Institute of Molecular Bioimaging and Physiology of CNR, Segrate, 20090, Italy
- Experimental Imaging Center, San Raffaele Scientific Institute, Milan, 20132, Italy
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Trexler M, Brusatori M, Auner G. Avidin-biotin complex-based capture coating platform for universal Influenza virus immobilization and characterization. PLoS One 2021; 16:e0247429. [PMID: 33635877 PMCID: PMC7909696 DOI: 10.1371/journal.pone.0247429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 02/08/2021] [Indexed: 11/18/2022] Open
Abstract
Influenza virus mutates quickly and unpredictably creating emerging pathogenic strains that are difficult to detect, diagnose, and characterize. Conventional tools to study and characterize virus, such as next generation sequencing, genome amplification (RT-PCR), and serological antibody testing, are not adequately suited to rapidly mutating pathogens like Influenza virus where the success of infection heavily depends on the phenotypic expression of surface glycoproteins. Bridging the gap between genome and pathogenic expression remains a challenge. Using sialic acid as a universal Influenza virus binding receptor, a novel virus avidin-biotin complex-based capture coating was developed and characterized that may be used to create future diagnostic and interrogation platforms for viable whole Influenza virus. First, fluorescent FITC probe studies were used to optimize coating component concentrations. Then atomic force microscopy (AFM) was used to profile the surface characteristics of the novel capture coating, acquire topographical imaging of Influenza particles immobilized by the coating, and calculate the capture efficiency of the coating (over 90%) for all four representative human Influenza virus strains tested.
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Affiliation(s)
- Micaela Trexler
- Smart Sensors and Integrated Microsystems, Wayne State University, Detroit, Michigan, United States of America
- Department of Biomedical Engineering, Wayne State University College of Engineering, Detroit, Michigan, United States of America
- * E-mail:
| | - Michelle Brusatori
- Smart Sensors and Integrated Microsystems, Wayne State University, Detroit, Michigan, United States of America
- Department of Biomedical Engineering, Wayne State University College of Engineering, Detroit, Michigan, United States of America
- Michael and Marian Illitch Department of Surgery, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Gregory Auner
- Smart Sensors and Integrated Microsystems, Wayne State University, Detroit, Michigan, United States of America
- Department of Biomedical Engineering, Wayne State University College of Engineering, Detroit, Michigan, United States of America
- Michael and Marian Illitch Department of Surgery, Wayne State University School of Medicine, Detroit, Michigan, United States of America
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Bae W, Yoon TY, Jeong C. Direct evaluation of self-quenching behavior of fluorophores at high concentrations using an evanescent field. PLoS One 2021; 16:e0247326. [PMID: 33606817 PMCID: PMC7895399 DOI: 10.1371/journal.pone.0247326] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 02/04/2021] [Indexed: 01/09/2023] Open
Abstract
The quantum yield of a fluorophore is reduced when two or more identical fluorophores are in close proximity to each other. The study of protein folding or particle aggregation is can be done based on this above-mentioned phenomenon—called self-quenching. However, it is challenging to characterize the self-quenching of a fluorophore at high concentrations because of the inner filter effect, which involves depletion of excitation light and re-absorption of emission light. Herein, a novel method to directly evaluate the self-quenching behavior of fluorophores was developed. The evanescent field from an objective-type total internal reflection fluorescence (TIRF) microscope was used to reduce the path length of the excitation and emission light to ~100 nm, thereby supressing the inner filter effect. Fluorescence intensities of sulforhodamine B, fluorescein isothiocyanate (FITC), and calcein solutions with concentrations ranging from 1 μM to 50 mM were directly measured to evaluate the concentration required for 1000-fold degree of self-quenching and to examine the different mechanisms through which the fluorophores undergo self-quenching.
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Affiliation(s)
- Wooli Bae
- Imperial College Centre for Synthetic Biology and Department of Bioengineering, Imperial College London, South Kensington Campus, London, United Kingdom
- * E-mail: (WB); (CJ)
| | - Tae-Young Yoon
- School of Biological Sciences, Seoul National University, Seoul, South Korea
- Institute for Molecular Biology and Genetics, Seoul National University, Seoul, South Korea
| | - Cherlhyun Jeong
- Center for Theragnosis, Korea Institute of Science and Technology, Seoul, Republic of Korea
- KHU‑KIST Department of Converging Science and Technology, Kyunghee University, Seoul, Republic of Korea
- * E-mail: (WB); (CJ)
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Mu XT, Li Y, Ju XJ, Yang XL, Xie R, Wang W, Liu Z, Chu LY. Microfluidic Fabrication of Structure-Controlled Chitosan Microcapsules via Interfacial Cross-Linking of Droplet Templates. ACS Appl Mater Interfaces 2020; 12:57514-57525. [PMID: 33301686 DOI: 10.1021/acsami.0c14656] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this work, a simple and flexible method for the fabrication of chitosan microcapsules with controllable structures and functions via the interfacial cross-linking reaction of the water-in-oil (W/O) emulsion templates is developed. The interfacial cross-linking reactions of chitosan and terephthalaldehyde (TPA) in W/O emulsion templates are comprehensively studied. The interfacial cross-linking reactions of the droplet templates in both batchwise and continuous conditions are studied. A poly(dimethylsiloxane) (PDMS) droplet-capture microfluidic chip is fabricated to investigate the interfacial reaction in continuous conditions online. In this study, the size and shell thickness of the microcapsules are affected by the preparation condition, such as the template size, emulsifier concentration, TPA concentration, and cross-linking time. Moreover, the size and shell thickness changes of chitosan microcapsules prepared in continuous conditions are much faster than those prepared in batchwise conditions. By regulating the preparation parameters, the microcapsules with controllable structures are fabricated in both batchwise and continuous conditions. The drug release behaviors of the microcapsules with controllable structures are studied. Furthermore, by adding magnetic nanoparticles to the aqueous solution, magnetic-responsive microcapsules are fabricated easily. This work provides valuable guidance for the controllable fabrication of chitosan microcapsules with designed structures and functions via single emulsion templates.
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Affiliation(s)
- Xiao-Ting Mu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Yao Li
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiao-Jie Ju
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Xiu-Lan Yang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Rui Xie
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Wei Wang
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Zhuang Liu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
| | - Liang-Yin Chu
- School of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
- State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, P. R. China
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Vikulina AS, Feoktistova NA, Balabushevich NG, von Klitzing R, Volodkin D. Cooling-Triggered Release from Mesoporous Poly( N-isopropylacrylamide) Microgels at Physiological Conditions. ACS Appl Mater Interfaces 2020; 12:57401-57409. [PMID: 33290041 PMCID: PMC7760096 DOI: 10.1021/acsami.0c15370] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 11/24/2020] [Indexed: 05/14/2023]
Abstract
Poly(N-isopropylacrylamide) (pNIPAM) hydrogels have broad potential applications as drug delivery vehicles because of their thermoresponsive behavior. pNIPAM loading/release performances are directly affected by the gel network structure. Therefore, there is a need with the approaches for accurate design of 3D pNIPAM assemblies with the structure ordered at the nanoscale. This study demonstrates size-selective spontaneous loading of macromolecules (dextrans 10-500 kDa) into pNIPAM microgels by microgel heating from 22 to 35 °C (microgels collapse and trap dextrans) followed by the dextran release upon further cooling down to 22 °C (microgels swell back) . This temperature-mediated behavior is fully reversible. The structure of pNIPAM microgels was tailored via hard templating and cross-linking of the hydrogel using sacrificial mesoporous cores of vaterite CaCO3 microcrystals. In addition, the fabrication of hollow thermoresponsive pNIPAM microshells has been demonstrated, utilizing vaterite microcrystals that had narrower pores. The proposed approach for heating-triggered encapsulation and cooling-triggered release into/from pNIPAM microgels may pave the ways for applications of pNIPAM hydrogels for skin and transdermal cooling-responsive drug delivery in the future.
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Affiliation(s)
- Anna S. Vikulina
- Fraunhofer Institute
for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses, Am Mühlenberg 13, Golm, Potsdam 14476, Germany
- School
of Science and Technology, Nottingham Trent
University, Clifton Lane, Nottingham NG11 8NS, United Kingdom
| | - Natalia A. Feoktistova
- Fraunhofer Institute
for Cell Therapy and Immunology, Branch Bioanalytics and Bioprocesses, Am Mühlenberg 13, Golm, Potsdam 14476, Germany
- Department
of Chemistry, Lomonosov Moscow State University, Leninskiye gory 1-3, Moscow 119991, Russia
| | - Nadezhda G. Balabushevich
- Department
of Chemistry, Lomonosov Moscow State University, Leninskiye gory 1-3, Moscow 119991, Russia
| | - Regine von Klitzing
- Department of Physics, Technische
Universität Darmstadt, Hochschulstraße 8, Darmstadt 64289, Germany
| | - Dmitry Volodkin
- School
of Science and Technology, Nottingham Trent
University, Clifton Lane, Nottingham NG11 8NS, United Kingdom
- Department
of Chemistry, Lomonosov Moscow State University, Leninskiye gory 1-3, Moscow 119991, Russia
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21
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Eom S, Park SM, Hong H, Kwon J, Oh SR, Kim J, Kim DS. Hydrogel-Assisted Electrospinning for Fabrication of a 3D Complex Tailored Nanofiber Macrostructure. ACS Appl Mater Interfaces 2020; 12:51212-51224. [PMID: 33153261 DOI: 10.1021/acsami.0c14438] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Electrospinning has shown great potential in tissue engineering and regenerative medicine due to a high surface-area-to-volume ratio and an extracellular matrix-mimicking structure of electrospun nanofibers, but the fabrication of a complex three-dimensional (3D) macroscopic configuration with electrospun nanofibers remains challenging. In the present study, we developed a novel hydrogel-assisted electrospinning process (GelES) to fabricate a 3D nanofiber macrostructure with a 3D complex but tailored configuration by utilizing a 3D hydrogel structure as a grounded collector instead of a metal collector in conventional electrospinning. The 3D hydrogel collector was discovered to effectively concentrate the electric field toward itself similar to the metal collector, thereby depositing electrospun nanofibers directly on its exterior surface. Synergistic advantages of the hydrogel (e.g., biocompatibility and thermally reversible sol-gel transition) and the 3D nanofiber macrostructure (e.g., mechanical robustness and high permeability) provided by the GelES process were demonstrated in a highly permeable tubular tissue graft and a robust drug- or cell-encapsulation construct. GelES is expected to broaden potential applications of electrospinning to not only provide in vivo drug/cell delivery and tissue regeneration but also an in vitro drug testing platform by increasing the degree of freedom in the configuration of the 3D nanofiber macrostructure.
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Affiliation(s)
- Seongsu Eom
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Sang Min Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Hyeonjun Hong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Jinju Kwon
- Department of Public Health Science, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
| | - Sang-Rok Oh
- Robotics and Media Research Institute, Korea Institute of Science and Technology, 14 Hwarang-ro, Seongbuk-gu, Seoul 02792, South Korea
| | - Junesun Kim
- Department of Public Health Science, Graduate School, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
- Department of Physical Therapy, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
- Department of Health and Environmental Science, College of Health Science, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
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Xiong J, Xie R, Wang Y, Wang C, Ai Y, Zheng W, Ding M, Gao J, Wang J, Liang Q. Nitrite-Responsive Hydrogel: Smart Drug Release Depending on the Severity of the Nitric Oxide-Related Disease. ACS Appl Mater Interfaces 2020; 12:51185-51197. [PMID: 33146508 DOI: 10.1021/acsami.0c13688] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nitric oxide (NO) is known as one of the most important biomarkers of many diseases. However, the development of NO-triggered drug releasing platforms is challenging due to the low concentration and short lifetime of NO in vivo. In this work, a novel nitrite (NO2-)-responsive hydrogel (DHPL-GEL), which can be used for smart drug release depending on the severity of the NO-related disease, is demonstrated. A dihydropyridine cross-linking agent is designed to construct DHPL-GEL to enable the responsive degradation of the hydrogel triggered by NO2-. On-demand release of the drug loaded in DHPL-GEL was observed under the stimulation of various concentrations of NO2- at the physiological level both in vitro and in vivo. In the inflammatory arthritis rat model, the DHPL-GEL drug delivery system showed a better therapeutic effect and less side effects than the traditional therapy and nonresponsive hydrogel drug delivery system, demonstrating the promising application of the NO2--responsive hydrogel for the treatment of NO-related diseases.
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Affiliation(s)
- Jialiang Xiong
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Ruoxiao Xie
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Yu Wang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Chenlong Wang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Yongjian Ai
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Wenchen Zheng
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Mingyu Ding
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
| | - Jianyi Gao
- China Astronaut Research and Training Center, Beijing 100094, P. R. China
| | - Jiaping Wang
- China Astronaut Research and Training Center, Beijing 100094, P. R. China
| | - Qionglin Liang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Beijing Key Lab of Microanalytical Methods & Instrumentation, Department of Chemistry, Center for Synthetic and Systems Biology, Tsinghua University, Beijing 100084, P. R. China
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DeTemple DE, Cammann S, Bahlmann J, Buettner M, Heisterkamp A, Vondran FWR, Kalies SK. Longitudinal imaging and femtosecond laser manipulation of the liver: How to generate and trace single-cell-resolved micro-damage in vivo. PLoS One 2020; 15:e0240405. [PMID: 33057345 PMCID: PMC7561146 DOI: 10.1371/journal.pone.0240405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 09/26/2020] [Indexed: 12/24/2022] Open
Abstract
The liver is known to possess extensive regenerative capabilities, the processes and pathways of which are not fully understood. A necessary step towards a better understanding involves the analysis of regeneration on the microscopic level in the in vivo environment. We developed an evaluation method combining longitudinal imaging analysis in vivo with simultaneous manipulation on single cell level. An abdominal imaging window was implanted in vivo in Balb/C mice for recurrent imaging after implantation. Intravenous injection of Fluorescein Isothiocyanate (FITC)-Dextran was used for labelling of vessels and Rhodamine 6G for hepatocytes. Minimal cell injury was induced via ablation with a femtosecond laser system during simultaneous visualisation of targeted cells using multiphoton microscopy. High-resolution imaging in vivo on single cell level including re-localisation of ablated regions in follow-up measurements after 2-7 days was feasible. Targeted single cell manipulation using femtosecond laser pulses at peak intensities of 3-6.6 μJ led to enhancement of FITC-Dextran in the surrounding tissue. These reactions reached their maxima 5-15 minutes after ablation and were no longer detectable after 24 hours. The procedures were well tolerated by all animals. Multiphoton microscopy in vivo, combined with a femtosecond laser system for single cell manipulation provides a refined procedure for longitudinal evaluation of liver micro-regeneration in the same region of interest. Immediate reactions after cell ablation and tissue regeneration can be analysed.
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Affiliation(s)
- Daphne E. DeTemple
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- * E-mail:
| | - Sebastian Cammann
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
| | - Julia Bahlmann
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- Deutsches Zentrum für Lungenforschung e.V. (DZL), Gießen, Germany
| | - Manuela Buettner
- Institute for Laboratory Animal Science, Hannover Medical School, Hannover, Germany
| | - Alexander Heisterkamp
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
- Deutsches Zentrum für Lungenforschung e.V. (DZL), Gießen, Germany
| | - Florian W. R. Vondran
- Department for General, Visceral and Transplant Surgery, Hannover Medical School, Hannover, Germany
- German Centre for Infection Research (DZIF), partner site Hannover-Braunschweig, Hannover, Germany
| | - Stefan K. Kalies
- Institute of Quantum Optics, Leibniz University Hannover, Hannover, Germany
- Lower Saxony Center for Biomedical Engineering, Implant Research and Development (NIFE), Hannover, Germany
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24
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Ahmed S, Kreft A, Chowdhury EH, Hossain SM, Galle PR, Neumann H. Molecular endoscopic imaging for the detection of Barrett's metaplasia using biodegradable inorganic nanoparticles: An ex-vivo pilot study on human tissue. PLoS One 2020; 15:e0239814. [PMID: 33002048 PMCID: PMC7529275 DOI: 10.1371/journal.pone.0239814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 09/03/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND STUDY AIMS Despite major technical advancements, endoscopic surveillance for detecting premalignant lesions in Barrett's esophagus is challenging because of their flat appearance with only subtle morphological changes. Molecular endoscopic imaging (MEI) using nanoparticles (NPs), coupled with fluorescently labeled antibody permits visualization of disease-specific molecular alterations. The aim of this ex vivo study was to assess the diagnostic applicability of MEI with NPs to detect Barrett's metaplasia. PATIENTS AND METHODS Seven patients undergoing endoscopic surveillance of known Barrett's esophagus were recruited. Freshly resected biopsy specimens were incubated with NPs coupled with FITC labeled Muc-2 antibodies and examined with MEI. Fluorescence intensity from Barrett's mucosa and control specimens were compared, followed by histological confirmation. RESULTS Fluorescence signals, indicating the presence of goblet cells, were noted for traditional MEI using Muc-2 antibodies in Barrett's intestinal metaplasia. Significantly stronger fluorescence signals were achieved with NPs coupled with FITC-conjugated Muc-2 antibodies. The results of MEI with NPs for the prediction of Barrett's metaplasia correlated with the final histopathological examination in all the cases. CONCLUSIONS Highly-specific NPs detected Barrett's metaplasia more efficiently than conventional MEI in this first feasibility study. MEI was as effective as standard histopathology for identifying Muc-2 containing goblet cells for diagnosis of Barrett's metaplasia. (DRKS-ID: DRKS00017747).
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Affiliation(s)
- Shakil Ahmed
- Inner Medicine, University Medical Centre, Mainz, Germany
| | - Andreas Kreft
- Institute of Pathology, University Medical Centre, Mainz, Germany
| | - Ezharul Hoque Chowdhury
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
| | - Sultana Mehbuba Hossain
- Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Subang Jaya, Malaysia
| | - Peter R. Galle
- Inner Medicine, University Medical Centre, Mainz, Germany
| | - Helmut Neumann
- Inner Medicine, University Medical Centre, Mainz, Germany
- * E-mail:
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25
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Borlan R, Tatar AS, Soritau O, Maniu D, Marc G, Florea A, Focsan M, Astilean S. Design of fluorophore-loaded human serum albumin nanoparticles for specific targeting of NIH:OVCAR3 ovarian cancer cells. Nanotechnology 2020; 31:315102. [PMID: 32315999 DOI: 10.1088/1361-6528/ab8b90] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nowadays, extensive research is being carried out to find innovative solutions for the development of stable, reproductible, and highly efficient fluorescent contrast agents with the ability of targeting specific cells, which can be further implemented for fluorescent-guided surgery in a real clinical setting. The present study is focused on the development of fluorescent dye-loaded protein nanoparticles (NPs) to overcome the drawbacks of the standard administration of free organic fluorophores, such as cytotoxicity, aqueousinstability, and rapid photo-degradation. Precisely, human serum albumin (HSA) NPs loaded with two different FDA approved dyes, namely indocyanine green (ICG) and fluorescein isothiocyanate (FITC), with a fluorescence response in the near-infrared and visible spectral domains, respectively, have been successfully designed. Even though the diameter of fluorescent HSA NPs is around 30 nm as proven by dynamic light scattering and transmission electron microscopy investigations, they present good loading efficiencies of almost 50% for ICG, and over 30% for FITC and a high particle yield of over 75%. Molecular docking simulations of ICG and FITC within the structure of HSA confirmed that the dyes were loaded inside the NPs, and docked in Site I (subdomain IIA) of the HSA molecule. After the confirmation of their high fluorescence photostability, the NPs were covalently conjugated with folic acid (HSA-FA NPs) in order to bind specifically to the folate receptor alpha (FRα) protein overexpressed on NIH:OVCAR3 ovarian cancer cells. Finally, fluorescence microscopy imaging investigations validate the improved internalization of folate targeted HSA&FITC NPs compared to cells treated with untargeted ones. Furthermore, TEM examinations of the distribution of HSA NPs into the NIH:OVCAR3 cells revealed anincreased number of NP-containing vesicles for the cells treated with HSA-FA NPs, compared to the cells exposed to untargeted HAS NPs, upholding the enhanced cellular uptake through FRα-mediated potocytosis.
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Affiliation(s)
- Raluca Borlan
- Biomolecular Physics Department, Faculty of Physics, Babeş-Bolyai University, 1 Kogălniceanu Street, Cluj-Napoca 400084, Romania. Nanobiophotonics and Laser Microspectroscopy Centre, Interdisciplinary Research Institute on Bio-Nano-Sciences, Babeş-Bolyai University, 42 Treboniu Laurean Street, Cluj-Napoca 400271, Romania
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Sakamoto K, Morishita T, Aburai K, Sakai K, Abe M, Nakase I, Futaki S, Sakai H. Key Process and Factors Controlling the Direct Translocation of Cell-Penetrating Peptide through Bio-Membrane. Int J Mol Sci 2020; 21:E5466. [PMID: 32751745 PMCID: PMC7432884 DOI: 10.3390/ijms21155466] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 07/24/2020] [Accepted: 07/28/2020] [Indexed: 11/19/2022] Open
Abstract
Cell-penetrating peptide (CPP) can directly penetrate the cytosol (cytolysis) and is expected to be a potent vector for a drug delivery system (DDS). Although there is general agreement that CPP cytolysis is related to dynamic membrane deformation, a distinctive process has yet to be established. Here, we report the key process and factors controlling CPP cytolysis. To elucidate the task, we have introduced trypsin digestion of adsorbed CPP onto giant unilamellar vesicle (GUV) to quantify the adsorption and internalization (cytolysis) separately. Also, the time-course analysis was introduced for the geometric calculation of adsorption and internalization amount per lipid molecule consisting of GUV. As a result, we found that adsorption and internalization assumed to occur successively by CPP molecule come into contact with membrane lipid. Adsorption is quick to saturate within 10 min, while cytolysis of each CPP on the membrane follows successively. After adsorption is saturated, cytolysis proceeds further linearly by time with a different rate constant that is dependent on the osmotic pressure. We also found that temperature and lipid composition influence cytolysis by modulating lipid mobility. The electrolyte in the outer media is also affected as a chemical mediator to control CPP cytolysis by following the Hoffmeister effect for membrane hydration. These results confirmed the mechanism of cytolysis as temporal and local phase transfer of membrane lipid from Lα to Mesh1, which has punctured bilayer morphologies.
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Affiliation(s)
- Kazutami Sakamoto
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (T.M.); (K.A.); (K.S.); (M.A.); (H.S.)
| | - Taku Morishita
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (T.M.); (K.A.); (K.S.); (M.A.); (H.S.)
| | - Kenichi Aburai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (T.M.); (K.A.); (K.S.); (M.A.); (H.S.)
| | - Kenichi Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (T.M.); (K.A.); (K.S.); (M.A.); (H.S.)
| | - Masahiko Abe
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (T.M.); (K.A.); (K.S.); (M.A.); (H.S.)
| | - Ikuhiko Nakase
- Nanoscience and Nanotechnology Research Center, Research Organization for the 21st Century, Osaka Prefecture University, Naka-ku, Sakai, Osaka 599-8570, Japan;
| | - Shiroh Futaki
- Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan;
| | - Hideki Sakai
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan; (T.M.); (K.A.); (K.S.); (M.A.); (H.S.)
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Sun X, Liu L, Zou H, Yao C, Yan Z, Ye B. Intelligent Drug Delivery Microparticles with Visual Stimuli-Responsive Structural Color Changes. Int J Nanomedicine 2020; 15:4959-4967. [PMID: 32764929 PMCID: PMC7367737 DOI: 10.2147/ijn.s249009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 06/18/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Particle-based drug delivery systems (DDSs) have a demonstrated value for drug discovery and development. However, some problems remain to be solved, such as limited stimuli, visual-monitoring. AIM To develop an intelligent multicolor DDSs with both near-infrared (NIR) controlled release and macroscopic color changes. MATERIALS AND METHODS Microparticles comprising GO/pNIPAM/PEGDA composite hydrogel inverse opal scaffolds, with dextran and calcium alginate hydrogel were synthesized using SCCBs as the template. The morphology of microparticle was observed under scanning electron microscopy, and FITC-dextran-derived green fluorescence images were determined using a confocal laser scanning microscope. During the drug release, FITC-dextran-derived green fluorescence images were captured using fluorescent inverted microscope. The relationship between the power of NIR and the drug release rate was obtained using the change in optical density (OD) values. Finally, the amount of drug released could be estimated quantitatively used the structural color or the reflection peak position. RESULTS A fixed concentration 8% (v/v) of PEGDA and 4mg/mL of GO was chosen as the optimal concentration based on the balance between appropriate volume shrinkage and structure color. The FITC-dextran was uniformly encapsulated in the particles by using 0.2 wt% sodium alginate. The microcarriers shrank because of the photothermal response and the intrinsic fluorescence intensity of FITC-dextran in the microparticles gradually decreased at the same time, indicating drug release. With an increasing duration of NIR irradiation, the microparticles gradually shrank, the reflection peak shifted toward blue and the structural color changed from red to orange, yellow, green, cyan, and blue successively. The drug release quantity can be predicted by the structural color of microparticles. CONCLUSION The multicolor microparticles have great potential in drug delivery systems because of its vivid reporting color, excellent photothermal effect, and the good stimuli responsivity.
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Affiliation(s)
- Xiaoyan Sun
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, Jiangsu210009, People’s Republic of China
| | - Lingzi Liu
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, Jiangsu210009, People’s Republic of China
| | - Hui Zou
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, Jiangsu210009, People’s Republic of China
| | - Caixia Yao
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, Jiangsu210009, People’s Republic of China
| | - Zhengyu Yan
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, Jiangsu210009, People’s Republic of China
| | - Baofen Ye
- Key Laboratory of Biomedical Functional Materials, School of Science, China Pharmaceutical University, Nanjing, Jiangsu210009, People’s Republic of China
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Nankali E, Shaabanzadeh M, Torbati MB. Fluorescent tamoxifen-encapsulated nanocapsules functionalized with folic acid for enhanced drug delivery toward breast cancer cell line MCF-7 and cancer cell imaging. Naunyn Schmiedebergs Arch Pharmacol 2020; 393:1211-1219. [PMID: 31980856 DOI: 10.1007/s00210-020-01825-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Accepted: 01/14/2020] [Indexed: 12/31/2022]
Abstract
Nanoscale drug delivery systems such as nanocapsules at the convergence of nanotechnology and biomedical sciences have been widely used. In the present study, with the aim of simultaneous imaging and therapy of cancer cells based on biodegradable/biocompatible polymers, we designed and synthesized tamoxifen-encapsulated nanocapsules to target the folate receptor positive breast cancer cells. Noteworthy, to monitor and link to the cancer cells, these nanocapsules were functionalized with fluorescein isothiocyanate and folic acid. The synthesized nanocapsules were characterized by FTIR, XRD, and PL spectroscopy, as well as FESEM and TEM techniques. Although the free tamoxifen has low solubility in physiological solutions, the synthesized tamoxifen-encapsulated nanocapsules have enough solubility, good stability, and more biocompatibility in these solutions. The encapsulation of tamoxifen into the nanocapsules, tamoxifen loading, and its subsequent release behavior were studied. In order to investigate the biological role of these nanocapsules, MTT assay and cell imaging analysis have also been examined. The cytotoxicity test exhibit that the mean IC50 values on the MCF-7 cell line were found to be 15.52 and 8.46 μg/ml in 24 h and 48 h respectively and the cytotoxicity increased by approximately 2.72-fold compared with free TAM against the MCF-7 cancer cell line. Also, cell imaging experiments showed that the synthesized nanocapsules have appropriate cellular uptake efficiency, good potential for monitoring of these particles in vitro. The experimental results suggest that the synthesized tamoxifen nanocapsules facilitate the proper targeting, drug encapsulation efficiency, and controlled release of tamoxifen in vitro.
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Affiliation(s)
- Ehsan Nankali
- Department of Chemistry, Damghan Branch, Islamic Azad University, Damghan, Iran
| | - Masoud Shaabanzadeh
- Department of Chemistry, Damghan Branch, Islamic Azad University, Damghan, Iran.
| | - Maryam Bikhof Torbati
- Department of Biology, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran
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29
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Zhang Y, Hou D, Yu X. Facile preparation of FITC-modified silicon nanodots for ratiometric pH sensing and imaging. Spectrochim Acta A Mol Biomol Spectrosc 2020; 234:118276. [PMID: 32203687 DOI: 10.1016/j.saa.2020.118276] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 05/09/2023]
Abstract
A ratiometric fluorescent pH sensor was facilely constructed by covalent modification of amino-terminated silicon nanodots (SiND) with pH-sensitive fluorescein isothiocyanate (FITC). After optimization, the SiND-FITC(40:1) material with a SiND:FITC initial mass ratio of 40:1 was selected for the sensing of hydrogen ions. It was observed that the material inherits the unique features of SiND and FITC, and there is significant improvement of SiND acid-base stability, which is a favorable factor in terms of providing fluorescence reference signal. The SiND-FITC(40:1) material displays not only high pH sensitivity, but also good stability and anti-interference ability, and the response process is highly reversible. Deploying the SiND-FITC(40:1) material, we have made available a simple, sensitive, and precise approach for pH sensing. In aqueous solutions, the I517/I466 fluorescence intensity ratio of SiND-FITC(40:1) increases linearly in the pH range of 5.40-7.76. This dual emission nanosensor was successfully applied for pH sensing and cellular fluorescence imaging.
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Affiliation(s)
- Yanan Zhang
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, China.
| | - Dajun Hou
- School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Xueli Yu
- Hubei Key Laboratory for Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang 438000, China
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Lin X, Wang Z, Ou H, Mitragotri S, Chen M. Correlations Between Skin Barrier Integrity and Delivery of Hydrophilic Molecules in the Presence of Penetration Enhancers. Pharm Res 2020; 37:100. [PMID: 32436083 DOI: 10.1007/s11095-020-02800-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Accepted: 03/13/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE We investigated the potential correlations between skin barrier integrity and hydrophilic drugs distribution in skin in the presence of different types of penetration enhancers (PEs) and their combinations. METHODS We measured skin conductivity to evaluate skin barrier integrity before and after the topical application of different chemical PEs, physical PE, peptide PE and their combinations in vitro. We also investigated their effect on the skin distribution profiles of two hydrophilic model drugs, Fluorescein sodium (376 Da) and Fluorescein isothiocyanate-dextrans 10 (10 KDa). RESULTS The physical PE significantly increased the skin conductivity compared to all other PEs, while the peptide PE had no effect on it. The drug deposition in different skin layers was not only dependent on PE applied but also its own molecular weight. We further found two excellent correlations: one (R2 = 0.9388) between skin barrier integrity and total skin absorption of FNa and another one(R2 = 0.9212) between skin barrier integrity and the deposition of FNa in dermis and receptor in presence of chemical or physical PEs and their combinations. CONCLUSIONS The total skin absorption or the deposition in dermis and receptor of small hydrophilic drug in the presence of chemical and physical PEs and their combinations show a good correlation with skin barrier integrity. However, such correlations hold true neither for large hydrophilic drug nor for peptide PE. All good relationships found in this work will allow screening suitable PEs or combinations by measuring the skin conductivity induced by corresponding PEs. Graphical Abstract The total skin absorption of small hydrophilic drug shows a good correlation with skin barrier integrity in the presence of chemical and physical penetration enhancers and their combinations. However, such a correlation hold true neither for large hydrophilic drug nor for peptide penetration enhancer.
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Affiliation(s)
- XueKe Lin
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Department of Marine Biological Science & Technology, College of Ocean & Earth Science, Xiamen University, Xiamen, 361102, China
| | - ZhenHua Wang
- Department of Cardiology, Second Affiliated Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - HuiLong Ou
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Department of Marine Biological Science & Technology, College of Ocean & Earth Science, Xiamen University, Xiamen, 361102, China
| | - Samir Mitragotri
- School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, 02138, USA
| | - Ming Chen
- State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Department of Marine Biological Science & Technology, College of Ocean & Earth Science, Xiamen University, Xiamen, 361102, China.
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Science, Xiamen University, Xiamen, 361102, China.
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da Silva GH, Santos da Silva JH, Iamamoto K, de Arruda TS, Katz ISS, Fernandes ER, Guedes F, Rodrigues da Silva ADC, Silva SR. Performance evaluation of the polyclonal anti-rabies virus ribonucleoprotein IgG antibodies produced in-house for use in direct fluorescent antibody test. J Virol Methods 2020; 280:113879. [PMID: 32360663 DOI: 10.1016/j.jviromet.2020.113879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 11/18/2022]
Abstract
Fluorescein isothiocyanate (FITC) labelled anti-rabies virus ribonucleoprotein (RNP) antibodies can be used as immunoreagents in direct fluorescent antibody testing (dFAT) for rabies diagnoses. While in-house products are occasionally used by laboratories, most conjugates are commercial reagents. Commercial anti-RNP antibodies are only available for research purposes in Brazil, however, which contributes to the increasing use of in-house produced antibodies. Considering that conjugate quality may influence the results obtained during rabies diagnosis, we sought to analyze the performance requirements of in-house produced polyclonal anti-RNP IgG-FITC for application in dFAT. To that end, their reproducibility, diagnostic sensitivity, and specificity were evaluated. The titer of polyclonal anti-RNP IgG-FITC was initially determined and evaluated by dFAT, using central nervous system (CNS) samples of different animal species (dogs, cats, bovines, equines, bats, and non-human primates). As our main result, the polyclonal anti-RNP IgG-FITC reached a titer of 1:30/1:40 in dFAT, with 100% of diagnostic sensitivity and specificity. In terms of reproducibility, the antibodies, regardless the production batch, presented the same performances. In conclusion, the in-house produced polyclonal anti-RNP IgG-FITC proved suitable for rabies virus antigen detection by dFAT.
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Schmidt AC, Hebels ER, Weitzel C, Stoessel B, Bao Y, Altmann KH, Leroux JC. Ammonia uptake by transmembrane pH gradient poly(isoprene)-block-poly(ethylene glycol) polymersomes. Soft Matter 2020; 16:2725-2735. [PMID: 32115597 DOI: 10.1039/d0sm00183j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Transmembrane pH gradient poly(isoprene)-block-poly(ethylene glycol) (PI-b-PEG) polymersomes were investigated for their potential use in the detoxification of ammonia, a metabolite that is excessively present in patients suffering from urea cycle disorders and advanced liver diseases, and which causes neurotoxic effects (e.g., hepatic encephalopathy). Polymers varying in PI and PEG block length were synthesized via nitroxide-mediated polymerization and screened for their ability to self-assemble into polymersomes in aqueous media. Ammonia sequestration by the polymersomes was investigated in vitro. While most vesicular systems were able to capture ammonia in simulated intestinal fluids, uptake was lost in partially dehydrated medium mimicking conditions in the colon. Polymeric crosslinking of residual olefinic bonds in the PI block increased polymersome stability, partially preserving the ammonia capture capacity in the simulated colon environment. These more stable vesicular systems hold promise for the chronic oral treatment of hyperammonemia.
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Affiliation(s)
- Aaron C Schmidt
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - Erik R Hebels
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - Charlotte Weitzel
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - Barbara Stoessel
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - Yinyin Bao
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - Karl-Heinz Altmann
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - Jean-Christophe Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
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Cladis DP, Li S, Reddivari L, Cox A, Ferruzzi MG, Weaver CM. A 90 day oral toxicity study of blueberry polyphenols in ovariectomized sprague-dawley rats. Food Chem Toxicol 2020; 139:111254. [PMID: 32165232 DOI: 10.1016/j.fct.2020.111254] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 03/04/2020] [Accepted: 03/07/2020] [Indexed: 12/18/2022]
Abstract
Regular consumption of polyphenol-rich fruits and vegetables is associated with beneficial health outcomes. To increase polyphenol intakes, consumers are increasingly using herbal and botanical dietary supplements containing concentrated polyphenol extracts. However, the safety of this consumption modality has not been vetted. To address this, ovariectomized Sprague-Dawley (OVX-SD) rats were orally gavaged with purified blueberry polyphenols at 0-1000 mg total polyphenols/kg bw/d for 90d. No differences in behavior, body weight, or food consumption were observed. No tumors or macroscopic changes were observed, and histopathological analyses showed no differences among groups. Although several statistically significant differences between treatment and control groups were observed in urine (color and pH) and blood (monocyte count, total cholesterol, and chloride ion concentration) analyses, these parameters were within normal ranges and not considered biologically significant. Intestinal permeability assessed via FITC-dextran showed increased intestinal permeability in the highest dose, though no morphological differences were found throughout the gastrointestinal tract. Given the lack of other systemic changes, this finding is likely of minimal physiological importance. These results indicate a NOAEL for blueberry polyphenols in OVX-SD rats is ≥ 1000 mg total polyphenols/kg bw/d, which translates to a 70 kg human consuming ~10 g polyphenols. Keywords: Blueberry, Polyphenol, Sub-chronic toxicity.
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Affiliation(s)
- Dennis P Cladis
- Dept. of Food Science, Purdue University, 745 Agriculture Mall Dr, W Lafayette, IN, 47907, USA
| | - Shiyu Li
- Dept. of Food Science, Purdue University, 745 Agriculture Mall Dr, W Lafayette, IN, 47907, USA
| | - Lavanya Reddivari
- Dept. of Food Science, Purdue University, 745 Agriculture Mall Dr, W Lafayette, IN, 47907, USA
| | - Abigail Cox
- Dept. of Comparative Pathobiology, Purdue University, 625 Harrison St, W Lafayette, IN, 47907, USA
| | - Mario G Ferruzzi
- Plants for Human Health Institute, North Carolina State University, 600 Laureate Way, Kannapolis, NC, 28081, USA
| | - Connie M Weaver
- Dept. of Food Science, Purdue University, 745 Agriculture Mall Dr, W Lafayette, IN, 47907, USA.
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Lucas E, Knoblauch R, Combs-Bosse M, Broedel SE, Geddes CD. Low-concentration trypsin detection from a metal-enhanced fluorescence (MEF) platform: Towards the development of ultra-sensitive and rapid detection of proteolytic enzymes. Spectrochim Acta A Mol Biomol Spectrosc 2020; 228:117739. [PMID: 31753644 DOI: 10.1016/j.saa.2019.117739] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 05/29/2023]
Abstract
Proteolytic enzymes, which serve to degrade proteins to their amino acid building blocks, provide a distinct challenge for both diagnostics and biological research fields. Due to their ubiquitous presence in a wide variety of organisms and their involvement in disease, proteases have been identified as biomarkers for various conditions. Additionally, low-levels of proteases may interfere with biological investigation, as contamination with these enzymes can physically alter the protein of interest to researchers, resulting in protein concentration loss or subtler polypeptide clipping that leads to a loss of functionality. Low levels of proteolytic degradation also reduce the shelf-life of commercially important proteins. Many detection platforms have been developed to achieve low-concentration or low-activity detection of proteases, yet many suffer from limitations in analysis time, label stability, and ultimately sensitivity. Herein we demonstrate the potential utility of fluorescein derivatives as fluorescent labels in a new, turn-off enzymatic assay based on the principles of metal-enhanced fluorescence (MEF). For fluorescein sodium salt alone on nano-slivered 96-well plates, or Quanta Plates™, we report up to 11,000x enhancement for fluorophores within the effective coupling or enhancement volume region, defined as ~100 nm from the silver surface. We also report a 9% coefficient of variation, and detection on the picomolar concentration scale. Further, we demonstrate the use of fluorescein isothiocyanate-labeled YebF protein as a coating layer for a MEF-based, Quanta Plate™ enzymatic activity assay using trypsin as the model enzyme. From this MEF assay we achieve a detection limit of ~1.89 ng of enzyme (2.8 mBAEE activity units) which corresponds to a minimum fluorescence signal decrease of 10%. The relative success of this MEF assay sets the foundation for further development and the tuning of MEF platforms for proteolytic enzyme sensing not just for trypsin, but other proteases as well. In addition, we discuss the future development of ultra-fast detection of proteases via microwave-accelerated MEF (MAMEF) detection technologies.
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Affiliation(s)
- Eric Lucas
- Institute of Fluorescence and Department of Chemistry and Biochemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD, 21202, USA
| | - Rachael Knoblauch
- Institute of Fluorescence and Department of Chemistry and Biochemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD, 21202, USA
| | - Mandie Combs-Bosse
- Athena Environmental Sciences, Inc., Bwtech@UMBC South, 1450 S Rolling Rd, Baltimore, MD, 21227, USA
| | - Sheldon E Broedel
- Athena Environmental Sciences, Inc., Bwtech@UMBC South, 1450 S Rolling Rd, Baltimore, MD, 21227, USA
| | - Chris D Geddes
- Institute of Fluorescence and Department of Chemistry and Biochemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD, 21202, USA.
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Sato A, Ogino Y, Shimotsuma A, Hiramoto A, Kim HS, Wataya Y. Direct interaction analysis of microRNA-351-5p and nuclear scaffold lamin B1 mRNA by the cell-free in vitro mRNA/miRNA binding evaluation system. Nucleosides Nucleotides Nucleic Acids 2020; 39:799-805. [PMID: 31994437 DOI: 10.1080/15257770.2019.1702675] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 12/05/2019] [Indexed: 02/09/2023]
Abstract
We previously demonstrated that miR-351-5p regulates nuclear scaffold lamin B1 expression and mediates the anticancer floxuridine-induced necrosis shift to apoptosis in mammalian tumor cells. Notably, it is unknown whether lamin B1 mRNA is a direct target of miR-351-5p. Here, we show that miR-351-5p interacts with a lamin B1 mRNA partial sequence by using the cell-free in vitro miRNA and mRNA binding evaluation system. In addition, the interaction of miR-351-5p/lamin B1 mRNA was suppressed by an miR-351-5p inhibitor. Our findings are important in exploring the functions of miRNAs in cellular processes, including cell death.
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Affiliation(s)
- Akira Sato
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Yoko Ogino
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Akira Shimotsuma
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Akiko Hiramoto
- Division of International Infectious Diseases Control, Faculty of Pharmaceutical Sciences, Okayama University, Kita-Ku, Okayama, Japan
| | - Hye-Sook Kim
- Division of International Infectious Diseases Control, Faculty of Pharmaceutical Sciences, Okayama University, Kita-Ku, Okayama, Japan
| | - Yusuke Wataya
- Division of International Infectious Diseases Control, Faculty of Pharmaceutical Sciences, Okayama University, Kita-Ku, Okayama, Japan
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Fan XM, Yu HY, Wang DC, Yao J, Lin H, Tang CX, Tam KC. Designing Highly Luminescent Cellulose Nanocrystals with Modulated Morphology for Multifunctional Bioimaging Materials. ACS Appl Mater Interfaces 2019; 11:48192-48201. [PMID: 31789013 DOI: 10.1021/acsami.9b13687] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Spherical cellulose nanocrystals (SCNs) and rod-shaped cellulose nanocrystals (RCNs) were extracted from different cellulose materials. The two shape forms of cellulose nanocrystals (CNs) were designed with a combination of isothiocyanate (FITC), and both the obtained FITC-SCNs and FITC-RCNs exhibited high fluorescence brightness. The surfaces of SCNs and RCNs were subjected to a secondary imino group by a Schiff reaction and then covalently bonded to the isothiocyanate group of FITC through a secondary imino group to obtain fluorescent cellulose nanocrystals (FITC-CNs). The absolute ζ-potential and dispersion stability of FITC-CNs (FITC-SCNs and FITC-RCNs) were improved, which also promoted the increase in the fluorescence quantum yield. FITC-RCNs had a fluorescence quantum yield of 30.7%, and FITC-SCNs had a morphological advantage (better dispersion, etc.), resulting in a higher fluorescence quantum yield of 35.9%. Cell cytotoxicity experiments demonstrated that the process of FITC-CNs entering mouse osteoblasts (MC3T3) did not destroy the cell membrane, showing good biocompatibility. On the other hand, FITC-CNs with good dispersibility can significantly enhance poly(vinyl alcohol) (PVA) and poly(lactic acid) (PLA); their mechanical properties were improved (the highest sample reached to 243%) and their fluorescent properties were imparted. This study provides a simple surface functionalization method to produce high-luminance fluorescent materials for bioimaging, multifunctional nanoenhancement/dispersion marking, and anticounterfeiting materials.
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Affiliation(s)
- Xue-Meng Fan
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Hou-Yong Yu
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile , Zhejiang Sci-Tech University , Hangzhou 310018 , China
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology , University of Waterloo , 200 University Avenue West , Waterloo N2L 3G1 , Ontario , Canada
| | - Duan-Chao Wang
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Juming Yao
- The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile , Zhejiang Sci-Tech University , Hangzhou 310018 , China
| | - Haitao Lin
- School of Biological and Chemical Engineering , Guangxi University of Science and Technology , Liuzhou 545006 , China
| | - Chun-Xia Tang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology , University of Waterloo , 200 University Avenue West , Waterloo N2L 3G1 , Ontario , Canada
| | - Kam Chiu Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology , University of Waterloo , 200 University Avenue West , Waterloo N2L 3G1 , Ontario , Canada
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Abstract
Cells can spatially and temporally control biochemistry using liquid-liquid phase separation to form membrane-less organelles. Synthetic biomolecular liquids offer a means to study the mechanisms of this process, as well as offering a route to the creation of functional biomimetic materials. With these goals in mind, we here examine the partitioning of long double-stranded DNA linkers into a liquid composed of small DNA particles ("nanostars") whose phase separation is driven by base pairing. We find that linker partitioning is length-dependent because of a confinement penalty of inserting long strands within the liquid's characteristic mesh size. We quantify this entropic-confinement effect using a simple partitioning theory and show that its magnitude is consistent with classic Odijk pictures of confined worm-like chains. Linker partitioning can also lead to inhomogeneous structures: long linkers excluded from the liquid interior tend to preferentially accumulate on the surface of liquid droplets (i.e., acting as surfactants), while linkers forced at high concentrations into the liquid undergo a secondary phase separation, forming metastable droplet-in-droplet structures. Altogether, our work demonstrates the ability to rationally engineer the composition and structure of a model biomolecular liquid.
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Váradi J, Hermenean A, Gesztelyi R, Jeney V, Balogh E, Majoros L, Malanga M, Fenyvesi É, Szente L, Bácskay I, Vecsernyés M, Fehér P, Ujhelyi Z, Vasvári G, Árvai I, Rusznyák Á, Balta C, Herman H, Fenyvesi F. Pharmacokinetic Properties of Fluorescently Labelled Hydroxypropyl-Beta-Cyclodextrin. Biomolecules 2019; 9:biom9100509. [PMID: 31546989 PMCID: PMC6843445 DOI: 10.3390/biom9100509] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/09/2019] [Accepted: 09/15/2019] [Indexed: 12/19/2022] Open
Abstract
2-Hydroxypropyl-beta-cyclodextrin (HPBCD) is utilized in the formulation of pharmaceutical products and recently orphan designation was granted for the treatment of Niemann–Pick disease, type C. The exact mechanism of HPBCD action and side effects are not completely explained. We used fluorescently labelled hydroxypropyl-beta-cyclodextrin (FITC-HPBCD) to study its pharmacokinetic parameters in mice and compare with native HPBCD data. We found that FITC-HPBCD has fast distribution and elimination, similar to HPBCD. Interestingly animals could be divided into two groups, where the pharmacokinetic parameters followed or did not follow the two-compartment, first-order kinetic model. Tissue distribution studies revealed, that a significant amount of FITC-HPBCD could be detected in kidneys after 60 min treatment, due to its renal excretion. Ex vivo fluorescent imaging showed that fluorescence could be measured in lung, liver, brain and spleen after 30 min of treatment. To model the interaction and cellular distribution of FITC-HPBCD in the wall of blood vessels, we treated human umbilical vein endothelial cells (HUVECs) with FITC-HPBCD and demonstrated for the first time that this compound could be detected in the cytoplasm in small vesicles after 30 min of treatment. FITC-HPBCD has similar pharmacokinetic to HPBCD and can provide new information to the detailed mechanism of action of HPBCD.
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Affiliation(s)
- Judit Váradi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Anca Hermenean
- Department of Histology, Faculty of Medicine, 'Vasile Goldiș' Western University of Arad, 86 Rebreanu Street, 310414 Arad, Romania
- Department of Biochemistry and Molecular Biology, University of Bucharest, Splaiul Independenței Street, no. 91-95, 050095, sector 5, Bucharest, Romania
| | - Rudolf Gesztelyi
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Viktória Jeney
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, 4012 Debrecen, Hungary
| | - Enikő Balogh
- MTA-DE Lendület Vascular Pathophysiology Research Group, Research Centre for Molecular Medicine, Faculty of Medicine, University of Debrecen, 4012 Debrecen, Hungary
| | - László Majoros
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Milo Malanga
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097 Illatos St. 7., Budapest, Hungary
| | - Éva Fenyvesi
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097 Illatos St. 7., Budapest, Hungary
| | - Lajos Szente
- Cyclolab Cyclodextrin R&D Laboratory Ltd., H-1097 Illatos St. 7., Budapest, Hungary
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Miklós Vecsernyés
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Pálma Fehér
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Zoltán Ujhelyi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Gábor Vasvári
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
- University of Debrecen, Doctoral School of Pharmaceutical Sciences, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - István Árvai
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Ágnes Rusznyák
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary
- University of Debrecen, Doctoral School of Pharmaceutical Sciences, Nagyerdei St. 98, H-4032 Debrecen, Hungary
| | - Cornel Balta
- Department of Histology, Faculty of Medicine, 'Vasile Goldiș' Western University of Arad, 86 Rebreanu Street, 310414 Arad, Romania
| | - Hildegard Herman
- Department of Histology, Faculty of Medicine, 'Vasile Goldiș' Western University of Arad, 86 Rebreanu Street, 310414 Arad, Romania
| | - Ferenc Fenyvesi
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Debrecen, Nagyerdei St. 98, H-4032 Debrecen, Hungary.
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Kavi Rajan R, Hussein MZ, Fakurazi S, Yusoff K, Masarudin MJ. Increased ROS Scavenging and Antioxidant Efficiency of Chlorogenic Acid Compound Delivered via a Chitosan Nanoparticulate System for Efficient In Vitro Visualization and Accumulation in Human Renal Adenocarcinoma Cells. Int J Mol Sci 2019; 20:ijms20194667. [PMID: 31547100 PMCID: PMC6801874 DOI: 10.3390/ijms20194667] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 08/23/2019] [Accepted: 08/25/2019] [Indexed: 11/16/2022] Open
Abstract
Naturally existing Chlorogenic acid (CGA) is an antioxidant-rich compound reported to act a chemopreventive agent by scavenging free radicals and suppressing cancer-causing mechanisms. Conversely, the compound’s poor thermal and pH (neutral and basic) stability, poor solubility, and low cellular permeability have been a huge hindrance for it to exhibit its efficacy as a nutraceutical compound. Supposedly, encapsulation of CGA in chitosan nanoparticles (CNP), nano-sized colloidal delivery vector, could possibly assist in enhancing its antioxidant properties, in vitro cellular accumulation, and increase chemopreventive efficacy at a lower concentration. Hence, in this study, a stable, monodispersed, non-toxic CNP synthesized via ionic gelation method at an optimum parameter (600 µL of 0.5 mg/mL of chitosan and 200 µL of 0.7 mg/mL of tripolyphosphate), denoted as CNP°, was used to encapsulate CGA. Sequence of physicochemical analyses and morphological studies were performed to discern the successful formation of the CNP°-CGA hybrid. Antioxidant property (studied via DPPH (1,1-diphenyl-2-picrylhydrazyl) assay), in vitro antiproliferative activity of CNP°-CGA, and in vitro accumulation of fluorescently labeled (FITC) CNP°-CGA in cancer cells were evaluated. Findings revealed that successful formation of CNP°-CGA hybrid was reveled through an increase in particle size 134.44 ± 18.29 nm (polydispersity index (PDI) 0.29 ± 0.03) as compared to empty CNP°, 80.89 ± 5.16 nm (PDI 0.26 ± 0.01) with a maximal of 12.04 μM CGA loaded per unit weight of CNP° using 20 µM of CGA. This result correlated with Fourier-Transform Infrared (FTIR) spectroscopic analysis, transmission Electron Microscopy (TEM) and field emission scanning (FESEM) electron microscopy, and ImageJ evaluation. The scavenging activity of CNP°-CGA (IC50 5.2 ± 0.10 µM) were conserved and slightly higher than CNP° (IC50 6.4±0.78 µM). An enhanced cellular accumulation of fluorescently labeled CNP°-CGA in the human renal cancer cells (786-O) as early as 30 min and increased time-dependently were observed through fluorescent microscopic visualization and flow cytometric assessment. A significant concentration-dependent antiproliferation activity of encapsulated CGA was achieved at IC50 of 16.20 µM as compared to CGA itself (unable to determine from the cell proliferative assay), implying that the competent delivery vector, chitosan nanoparticle, is able to enhance the intracellular accumulation, antiproliferative activity, and antioxidant properties of CGA at lower concentration as compared to CGA alone.
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Affiliation(s)
- Revathi Kavi Rajan
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
- Cancer Research Laboratory Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mohd Zobir Hussein
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Sharida Fakurazi
- Department of Human Anatomy, Faculty of Medicine and Health Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Khatijah Yusoff
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia
| | - Mas Jaffri Masarudin
- Department of Cell and Molecular Biology, Faculty of Biotechnology and Biomolecular Sciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
- Cancer Research Laboratory Institute of Biosciences, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
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Michlewska S, Kubczak M, Maroto-Díaz M, Sanz Del Olmo N, Ortega P, Shcharbin D, Gomez Ramirez R, Javier de la Mata F, Ionov M, Bryszewska M. Synthesis and Characterization of FITC Labelled Ruthenium Dendrimer as a Prospective Anticancer Drug. Biomolecules 2019; 9:biom9090411. [PMID: 31450702 PMCID: PMC6770823 DOI: 10.3390/biom9090411] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/20/2019] [Accepted: 08/21/2019] [Indexed: 12/27/2022] Open
Abstract
Metallodendrimers-dendrimers with included metals-are widely investigated as biocompatible equivalents to metal nanoparticles. Applications can be expected in the fields of catalysis, as chemical sensors in molecular recognition and as anticancer drugs. Metallodendrimers can also mimic certain biomolecules, for example, haemoprotein in the case of using a dendrimer with a porphyrin core. In previous papers, we showed the promising anticancer effects of carbosilane ruthenium dendrimers. The present paper is devoted to studying biocompatibility and the cytotoxic effect on normal and cancer cells of carbosilane ruthenium dendrimers labelled with fluorescent probe fluorescein isothiocyanate (FITC). The addition of fluorescent probe allowed tracking the metallodendrimer in both normal and cancer cells. It was found that carbosilane ruthenium dendrimer labelled with FITC in concentration up to 10 µmol/L was more cytotoxic for cancer cells than for normal cells. Thus, FITC labelled carbosilane ruthenium dendrimer is a good candidate for diagnostic imaging and studying anticancer effects of metallodendrimers in cancer therapy.
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Affiliation(s)
- Sylwia Michlewska
- Laboratory of Microscopic Imaging and Specialized Biological Techniques, Faculty of Biology and Environmental Protection, University of Lodz, Banacha12/16, 90-237 Lodz, Poland
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Małgorzata Kubczak
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
| | - Marta Maroto-Díaz
- Networking Research Center on Bioengineering, Biomaterials & Nanomedicine (CIBER-BBN), Monforte de Lemos 3-5, Pabellon´ 11, Planta, 028029 Madrid, Spain
- Departamento Química Orgánica y Química Inorganica, Universidad de Alcalá, Instituto de Investigación Química "Andrés M. del Río" (IQAR), UAH, 28871 Alcalá de Henares, Spain
| | - Natalia Sanz Del Olmo
- Networking Research Center on Bioengineering, Biomaterials & Nanomedicine (CIBER-BBN), Monforte de Lemos 3-5, Pabellon´ 11, Planta, 028029 Madrid, Spain
- Departamento Química Orgánica y Química Inorganica, Universidad de Alcalá, Instituto de Investigación Química "Andrés M. del Río" (IQAR), UAH, 28871 Alcalá de Henares, Spain
| | - Paula Ortega
- Networking Research Center on Bioengineering, Biomaterials & Nanomedicine (CIBER-BBN), Monforte de Lemos 3-5, Pabellon´ 11, Planta, 028029 Madrid, Spain
- Departamento Química Orgánica y Química Inorganica, Universidad de Alcalá, Instituto de Investigación Química "Andrés M. del Río" (IQAR), UAH, 28871 Alcalá de Henares, Spain
| | - Dzmitry Shcharbin
- Institute of Biophysics and Cell Engineering of NASB, Akademicheskaja 27, 220072 Minsk, Belarus
| | - Rafael Gomez Ramirez
- Networking Research Center on Bioengineering, Biomaterials & Nanomedicine (CIBER-BBN), Monforte de Lemos 3-5, Pabellon´ 11, Planta, 028029 Madrid, Spain
- Departamento Química Orgánica y Química Inorganica, Universidad de Alcalá, Instituto de Investigación Química "Andrés M. del Río" (IQAR), UAH, 28871 Alcalá de Henares, Spain
- Instituto Ramon y Cajal de Investigacion Sanitaria, IRYCIS, Colmenar Viejo Road, Km 9, 100, 28034 Madrid, Spain
| | - Francisco Javier de la Mata
- Networking Research Center on Bioengineering, Biomaterials & Nanomedicine (CIBER-BBN), Monforte de Lemos 3-5, Pabellon´ 11, Planta, 028029 Madrid, Spain
- Departamento Química Orgánica y Química Inorganica, Universidad de Alcalá, Instituto de Investigación Química "Andrés M. del Río" (IQAR), UAH, 28871 Alcalá de Henares, Spain
- Instituto Ramon y Cajal de Investigacion Sanitaria, IRYCIS, Colmenar Viejo Road, Km 9, 100, 28034 Madrid, Spain
| | - Maksim Ionov
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland.
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, Pomorska 141/143, 90-236 Lodz, Poland
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Chen P, Ilyas I, He S, Xing Y, Jin Z, Huang C. Ratiometric pH Sensing and Imaging in Living Cells with Dual-Emission Semiconductor Polymer Dots. Molecules 2019; 24:molecules24162923. [PMID: 31409040 PMCID: PMC6721214 DOI: 10.3390/molecules24162923] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/06/2019] [Accepted: 08/10/2019] [Indexed: 11/25/2022] Open
Abstract
Polymer dots (Pdots) represent newly developed semiconductor polymer nanoparticles and exhibit excellent characteristics as fluorescent probes. To improve the sensitivity and biocompatibility of Pdots ratiometric pH biosensors, we synthesized 3 types of water-soluble Pdots: Pdots-PF, Pdots-PP, and Pdots-PPF by different combinations of fluorescent dyes poly(9,9-dioctylfluorenyl-2,7-diyl) (PFO), poly[(9,9-dioctyl-fluorenyl-2,7-diyl)-co-(1,4-benzo-{2,1′,3}-thiadazole)] (PFBT), and fluorescein isothiocyanate (FITC). We found that Pdots-PPF exhibits optimal performance on pH sensing. PFO and FITC in Pdots-PPF produce pH-insensitive (λ = 439 nm) and pH-sensitive (λ = 517 nm) fluorescence respectively upon a single excitation at 380 nm wavelength, which enables Pdots-PPF ratiometric pH sensing ability. Förster resonance energy transfer (FRET) together with the use of PFBT amplify the FITC signal, which enables Pdots-PPF robust sensitivity to pH. The emission intensity ratio (I517/I439) of Pdots-PPF changes linearly as a function of pH within the range of pH 3.0 to 8.0. Pdots-PPF also possesses desirable reversibility and stability in pH measurement. More importantly, Pdots-PPF was successfully used for cell imaging in Hela cells, exhibiting effective cellular uptake and low cytotoxicity. Our study suggests the promising potential of Pdots-PPF as an in vivo biomarker.
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Affiliation(s)
- Piaopiao Chen
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Iqra Ilyas
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Su He
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Yichen Xing
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Zhigang Jin
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
| | - Chaobiao Huang
- College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
- Xingzhi College, Zhejiang Normal University, Jinhua 321004, China.
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Mohammadzadeh P, Shafiee Ardestani M, Mortazavi-Derazkola S, Bitarafan-Rajabi A, Ghoreishi SM. PEG-Citrate dendrimer second generation: is this a good carrier for imaging agents In Vitro and In Vivo? IET Nanobiotechnol 2019; 13:560-564. [PMID: 31432786 PMCID: PMC8676229 DOI: 10.1049/iet-nbt.2018.5360] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 03/11/2019] [Accepted: 03/13/2019] [Indexed: 11/21/2023] Open
Abstract
While cancer is the leading cause of human's deaths worldwide, finding an imaging agent which can detect cancer tumours is needed for cancer diagnosis. In the present study, PEG-citrate dendrimer-G2 was used as a nano-carrier of FITC dye and Iohexol to help passive targeting and uptake of both imaging agents in cancer cells/tumour in vitro and in vivo. Dendrimer was synthesisedand the product characterised using LC-MS, FT-IR, DLS, ELS, AFM, and 1HNMR. After FITC loading into dendrimer, MTT was performed to determine the cytotoxicity of formulation on HEK-293 and MCF-7 cells. In vitro imaging using dendrimer-FITC was done via fluorescent microscope thereafter. Moreover, CT imaging using Iohexol was employed to show the targeting nature and ability of the complex to use as imaging agent in vivo. Data yielded in this study corroborate the notion that the promised dendrimer was synthesised properly and had no toxicity along with FITC on normal cell. Furthermore, CT and fluorescent images showed the targeting nature and imaging ability of Iohexol/FITC loaded dendrimer in vitro and in vivo. Overall, results showed promising characteristics of the novel complexes using dendrimer-G2 both in vitro and in vivo.
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Affiliation(s)
- Pardis Mohammadzadeh
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Shafiee Ardestani
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Sobhan Mortazavi-Derazkola
- Pharmaceutical Sciences Research Center, School of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Ahmad Bitarafan-Rajabi
- Echocardiography Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Seyedeh Masoumeh Ghoreishi
- Cancer Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R. Iran.
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Feng Y, Huang Y, Wang Y, Wang P, Song H, Wang F. Antibiotics induced intestinal tight junction barrier dysfunction is associated with microbiota dysbiosis, activated NLRP3 inflammasome and autophagy. PLoS One 2019; 14:e0218384. [PMID: 31211803 PMCID: PMC6581431 DOI: 10.1371/journal.pone.0218384] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023] Open
Abstract
Tight junction barrier is critical to intestinal homeostasis. Applying antibiotics to treat infections is common in clinical practice, which may affect intestinal microbiota. Intestinal microbiota dysbiosis is involved in the occurrence of some gastrointestinal diseases. Therefore, this study was aimed to investigate the influence of antibiotics on intestinal tight junction barrier and the possible underlying mechanisms. Healthy adult female C57BL/6 mice were treated with a broad-spectrum antibiotic cocktail for 14 days. 16S rDNA Illumina sequencing and headspace gas chromatography-mass spectrometry (HS-GC/MS) were respectively used to analyze microbial community and to detect short-chain fatty acids (SCFAs) contents. In vivo intestinal paracellular permeability to fluorescein isothiocyanate-dextran (FITC-dextran) was measured. Protein expression was determined by immunoblotting. Immunofluoresence was applied to observe the distributions of ZO-1, LC3B and ASC. Antibiotics remarkably altered intestinal microbiota composition in healthy mice, accompanying reduced SCFAs' concentrations. In addition, the intestinal tight junction barrier was disrupted by antibiotic treatment, as evidenced by increased intestinal paracellular permeability to FITC-dextran, decreased tight junction protein expressions, and disrupted ZO-1 morphology. Furthermore, NLRP3 inflammasome and autophagy were activated by antibiotic treatment. In conclusion, intestinal epithelial tight junction barrier dysfunction induced by antibiotics is associated with intestinal microbiota dysbiosis, activated NLRP3 inflammasome and autophagy in mice.
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Affiliation(s)
- Yanhai Feng
- State Key Laboratory of Trauma, Burns, and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yalan Huang
- Department of Military Nursing, School of Nursing, Third Military Medical University (Army Medical University), Chongqing, China
| | - Yu Wang
- Department of Gastroenterology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Pei Wang
- State Key Laboratory of Trauma, Burns, and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Huapei Song
- State Key Laboratory of Trauma, Burns, and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
| | - Fengjun Wang
- State Key Laboratory of Trauma, Burns, and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, China
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Liu C, Wan T, Wang H, Zhang S, Ping Y, Cheng Y. A boronic acid-rich dendrimer with robust and unprecedented efficiency for cytosolic protein delivery and CRISPR-Cas9 gene editing. Sci Adv 2019; 5:eaaw8922. [PMID: 31206027 PMCID: PMC6561739 DOI: 10.1126/sciadv.aaw8922] [Citation(s) in RCA: 211] [Impact Index Per Article: 42.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 05/10/2019] [Indexed: 05/19/2023]
Abstract
Cytosolic protein delivery is of central importance for the development of protein-based biotechnologies and therapeutics; however, efficient intracellular delivery of native proteins remains a challenge. Here, we reported a boronic acid-rich dendrimer with unprecedented efficiency for cytosolic delivery of native proteins. The dendrimer could bind with both negatively and positively charged proteins and efficiently delivered 13 cargo proteins into the cytosol of living cells. All the delivered proteins kept their bioactivities after cytosolic delivery. The dendrimer ensures efficient intracellular delivery of Cas9 protein into various cell lines and showed high efficiency in CRISPR-Cas9 genome editing. The rationally designed boronic acid-rich dendrimer permits the development of an efficient platform with high generality for the delivery of native proteins.
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Affiliation(s)
- Chongyi Liu
- Shanghai Key Laboratory of Regulatory Biology, East China Normal University, Shanghai 200241, China
| | - Tao Wan
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hui Wang
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Song Zhang
- Shanghai Key Laboratory of Regulatory Biology, East China Normal University, Shanghai 200241, China
| | - Yuan Ping
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology, East China Normal University, Shanghai 200241, China
- South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
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Kizer ME, Deng Y, Kang G, Mikael PE, Wang X, Chung AJ. Hydroporator: a hydrodynamic cell membrane perforator for high-throughput vector-free nanomaterial intracellular delivery and DNA origami biostability evaluation. Lab Chip 2019; 19:1747-1754. [PMID: 30964485 DOI: 10.1039/c9lc00041k] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The successful intracellular delivery of exogenous macromolecules is crucial for a variety of applications ranging from basic biology to the clinic. However, traditional intracellular delivery methods such as those relying on viral/non-viral nanocarriers or physical membrane disruptions suffer from low throughput, toxicity, and inconsistent delivery performance and are time-consuming and/or labor-intensive. In this study, we developed a single-step hydrodynamic cell deformation-induced intracellular delivery platform named "hydroporator" without the aid of vectors or a complicated/costly external apparatus. By utilizing only fluid inertia, the platform focuses, guides, and stretches cells robustly without clogging. This rapid hydrodynamic cell deformation leads to both convective and diffusive delivery of external (macro)molecules into the cell through transient plasma membrane discontinuities. Using this hydroporation approach, highly efficient (∼90%), high-throughput (>1 600 000 cells per min), and rapid delivery (∼1 min) of different (macro)molecules into a wide range of cell types was achieved while maintaining high cell viability. Taking advantage of the ability of this platform to rapidly deliver large molecules, we also systematically investigated the temporal biostability of vanilla DNA origami nanostructures in living cells for the first time. Experiments using two DNA origami (tube- and donut-shaped) nanostructures revealed that these nanostructures can maintain their structural integrity in living cells for approximately 1 h after delivery, providing new opportunities for the rapid characterization of intracellular DNA biostability.
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Affiliation(s)
- Megan E Kizer
- Department of Chemistry and Chemical Biology, Centre for Biotechnology and Interdisciplinary Studies (CBIS), Rensselaer Polytechnic Institute (RPI), Troy, NY 12180, USA.
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Del Rio M, de la Canal L, Pinedo M, Mora-Montes HM, Regente M. Effects of the binding of a Helianthus annuus lectin to Candida albicans cell wall on biofilm development and adhesion to host cells. Phytomedicine 2019; 58:152875. [PMID: 30884454 DOI: 10.1016/j.phymed.2019.152875] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Revised: 02/16/2019] [Accepted: 02/23/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND In our previous study, we isolated and characterized a lectin called Helja from Helianthus annuus (sunflower) and then, in a further study, demonstrated its antifungal activity against Candida spp. Since Candida infections are a major health concern due to the increasing emergence of antifungal resistant strains, the search for new antifungal agents offers a promising opportunity for improving the treatment strategies against candidiasis. PURPOSE The aim of this work was to get insights about the mechanism of action of Helja, an antifungal lectin of H. annuus, and to explore its ability to inhibit Candida albicans biofilm development and adherence to buccal epithelial cells (BEC). STUDY DESIGN/METHODS Yeast viability was evaluated by Evans Blue uptake and counting of colony forming units (CFU). The yeast cell integrity was assessed using Calcofluor White (CFW) as a cell wall perturbing agent and sorbitol as osmotic protectant. The induction of oxidative stress was evaluated using 3,3'-diaminobenzidine (DAB) for detection of hydrogen peroxide. The adherence was determined by counting the yeast cells attached to BEC after methylene blue staining. The biofilms were developed on polystyrene microplates, visualized by confocal laser scanning microscopy and the viable biomass was quantified by CFU counting. The binding lectin-Candida was assessed using Helja conjugated to fluorescein isothiocyanate (Helja-FITC) and simultaneous staining with CFW. The cellular surface hydrophobicity (CSH) was determined using a microbial adhesion to hydrocarbons method. RESULTS C. albicans cells treated with 0.1 µg/µl of Helja showed a drastic decrease in yeast survival. The lectin affected the fungal cell integrity, induced the production of hydrogen peroxide and inhibited the morphological transition from yeast to filamentous forms. Helja caused a significant reduction of adherent cells and a decrease in biofilm biomass and coverage area. The treatment with the protein also reduced the surface hydrophobicity of fungal cells. We show the binding of Helja-FITC to yeast cells distributed as a thin outer layer to the CFW signal, and this interaction was displaced by mannose and Concanavalin A. CONCLUSION The results demonstrate the interaction of Helja with the mannoproteins of C. albicans cell wall, the disruption of the cell integrity, the induction of oxidative stress, the inhibition of the morphological transition from yeast to filamentous forms and the fungal cell viability loss. The binding Helja-Candida also provides a possible explanation of the lectin effect on cell adherence, biofilm development and CSH, relevant features related to virulence of the pathogen.
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Affiliation(s)
- Marianela Del Rio
- Instituto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3250, Mar del Plata 7600, Argentina.
| | - Laura de la Canal
- Instituto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3250, Mar del Plata 7600, Argentina.
| | - Marcela Pinedo
- Instituto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3250, Mar del Plata 7600, Argentina.
| | - Héctor M Mora-Montes
- Departamento de Biología, Universidad de Guanajuato, Noria Alta s/n, col. Noria Alta, Guanajuato, Gto. C.P. 36050, Mexico.
| | - Mariana Regente
- Instituto de Investigaciones Biológicas, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3250, Mar del Plata 7600, Argentina.
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Vu H, Zhou J, Huang Y, Hakamivala A, Khang MK, Tang L. Development of a dual-wavelength fluorescent nanoprobe for in vivo and in vitro cell tracking consecutively. Bioorg Med Chem 2019; 27:1855-1862. [PMID: 30910476 PMCID: PMC6469702 DOI: 10.1016/j.bmc.2019.03.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/12/2019] [Accepted: 03/19/2019] [Indexed: 11/22/2022]
Abstract
Many imaging probes have been developed for a wide variety of imaging modalities. However, no optical imaging probe could be utilized for both microscopic and whole animal imaging. To fill the gap, the dual-wavelength fluorescent imaging nanoprobe was developed to simultaneously carry both visible-range fluorescent dye and near-infrared (NIR) dye. Emission scan confirms that the nanoprobe exhibits two separate peaks with strong fluorescent intensity in both visible and NIR ranges. Furthermore, the dual-wavelength fluorescent nanoprobe has high photostability and colloidal stability, as well as long shelf-life. In vitro cell culture experiments show that the nanoprobe has the ability to label different types of cells (namely, esophageal, prostate, fibroblast and macrophage cell) for fluorescent microscope imaging. More importantly, cell tracking experiments confirm that cell migration and distribution in various organs can be tracked in real time using in vivo whole-body NIR imaging and in vitro microscopic imaging, respectively.
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Affiliation(s)
- Hong Vu
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA; Progenitec Inc., 7301 West Pioneer Parkway Suite B, Arlington, TX 76013, USA
| | - Jun Zhou
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA
| | - Yihui Huang
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA
| | | | - Min Kyung Khang
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA; Chemistry and Biochemistry Department, University of Texas at Arlington, Arlington, TX, USA
| | - Liping Tang
- Bioengineering Department, University of Texas at Arlington, Arlington, TX, USA.
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Zhong Y, Wang Y, Luo L, Nurhidayah D, Maruf A, Gregersen H, Wu W, Wang GX. Targeted polyethylenimine/(p53 plasmid) nanocomplexes for potential antitumor applications. Nanotechnology 2019; 30:145601. [PMID: 30524021 DOI: 10.1088/1361-6528/aaf41a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The development of the tumor-targeting ability of nanocarriers is of paramount importance for gene delivery into tumor lesions as well as to avoid biotoxicity. Here we report the synthesis of the polyethyleneimine-fluorescein isothiocyanate-folic acid (PEI-FITC-FA) polymer, which could condense the tumor suppressor pp53 to form nanocomplexes. These targeted nanocomplexes exhibited favorable physical properties including a small size of <100 nm, exploiting the enhanced permeability and retention effect and tumor-targeting ability by binding to the overexpressed FA receptors on tumor cell surfaces. In addition, once the nanocomplexes are accumulating in the tumor tissue, the target functional ligand, FA, can selectively recognize the over-expressed FA receptor and subsequently remain on the tumor cell surface, which can significantly promote the tumor cell uptake because of the time- and concentration-dependent internalization caused by the enhanced interaction between nanocomplex and tumor cell. Our results indicated that PEI-FITC-FA/pp53 nanocomplexes could be efficiently delivered into tumor cells, and subsequently induce tumor cell apoptosis. Thus, the targeted cationic polymer PEI-FITC-FA could be used as an advanced nanocarrier for gene delivery.
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Affiliation(s)
- Yuan Zhong
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing, 400030, People's Republic of China
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Zheng J, Wang X, Tao Y, Wang Y, Yu X, Liu H, Ji L, Bao K, Wang C, Jia Z, Hong M. Yu-Ping-Feng-San ameliorates recurrent allergic inflammation of atopic dermatitis by repairing tight junction defects of the epithelial barrier. Phytomedicine 2019; 54:214-223. [PMID: 30668371 DOI: 10.1016/j.phymed.2018.09.190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 08/04/2018] [Accepted: 09/17/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) is a common allergic inflammatory skin disease, concomitant with a high relapse rate. Yu-Ping-Feng-San (YPFS), a well-known Chinese herbal decoction, reduces the AD relapse rate and recurring severity incidence. However, the underlying mechanism of YPFS on resisting AD recurrence is still unknown and further study is needed. PURPOSE To evaluate the effects of YPFS on recurrent allergic inflammation of AD in a murine model and to investigate the underlying mechanisms in vivo and ex vivo. METHODS A fluorescein isothiocyanate (FITC)-induced AD relapsing mouse model was established to study the effects of YPFS and three active components, claycosin, formononetin, and cimifugin, on recurrent allergic inflammation in vivo. Histological analyses of ear tissue inflammation were evaluated by hematoxylin and eosin staining. Production of interleukin (IL)-4, IL-5, IL-13, and interferon-gamma in mice ear tissues, IgE in serum, and thymic stromal lymphopoietin (TSLP) in cell cultures were measured by ELISAs. Tight junction (TJ) expression was detected by immunohistochemistry and western blots. Epithelial barrier integrity was observed with electron microscopy, transepithelial electric resistance (TER), and paracellular flux measurements. HaCaT cells were utilized for ex vivo cellular analyses. RESULTS In the recurrent phase of AD, YPFS exhibited both short- and long-term anti-allergic inflammatory efficacy with reduced ear tissue inflammation and decreased IL-4, IL-5, IL-13, and IgE production. The three active components, claycosin, formononetin, and cimifugin, showed similar effects as YPFS. Stimulus-induced decreased TER and increased FITC-dextran flux in air-liquid interface cultures of HaCaT cells were significantly repaired by YPFS and the three active components. Notably, the upregulated TJ (CLDN-1 and occludin) expression of epithelium was observed only with YPFS and the three components-treated mice as opposed to the result using conventional anti-allergy medicines. Restored TJ expression by YPFS three components was also detectable in the remission phase of AD. Moreover, decreased TJ expression influenced the effects of YPFS on epithelial cells-derived TSLP production. CONCLUSIONS YPFS ameliorated recurrent allergic inflammation of AD by repairing TJ defects of epithelial barriers. Intervening epithelial barrier functions could be a preventive and therapeutic approach for recurrent allergic inflammation of AD.
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Affiliation(s)
- Jie Zheng
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; Department of Pharmacology, School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Xiaoyu Wang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yu Tao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yan Wang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Xi Yu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Hailiang Liu
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Lv Ji
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Kaifan Bao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Can Wang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Zhirong Jia
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Min Hong
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China.
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Trentini A, Murganti F, Rosta V, Cervellati C, Manfrinato MC, Spadaro S, Dallocchio F, Volta CA, Bellini T. Hydroxyethyl Starch 130/0.4 Binds to Neutrophils Impairing Their Chemotaxis through a Mac-1 Dependent Interaction. Int J Mol Sci 2019; 20:ijms20040817. [PMID: 30769810 PMCID: PMC6413098 DOI: 10.3390/ijms20040817] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 01/29/2019] [Accepted: 02/12/2019] [Indexed: 01/04/2023] Open
Abstract
Several studies showed that hydroxyethyl starch (HES), a synthetic colloid used in volume replacement therapies, interferes with leukocyte-endothelium interactions. Although still unclear, the mechanism seems to involve the inhibition of neutrophils' integrin. With the aim to provide direct evidence of the binding of HES to neutrophils and to investigate the influence of HES on neutrophil chemotaxis, we isolated and treated the cells with different concentrations of fluorescein-conjugated HES (HES-FITC), with or without different stimuli (N-Formylmethionine-leucyl-phenylalanine, fMLP, or IL-8). HES internalization was evaluated by trypan blue quenching and ammonium chloride treatment. Chemotaxis was evaluated by under-agarose assay after pretreatment of the cells with HES or a balanced saline solution. The integrin interacting with HES was identified by using specific blocking antibodies. Our results showed that HES-FITC binds to the plasma membrane of neutrophils without being internalized. Additionally, the cell-associated fluorescence increased after stimulation of neutrophils with fMLP (p < 0.01) but not IL-8. HES treatment impaired the chemotaxis only towards fMLP, event mainly ascribed to the inhibition of CD-11b (Mac-1 integrin) activity. Therefore, the observed effect mediated by HES should be taken into account during volume replacement therapies. Thus, HES treatment could be advantageous in clinical conditions where a low activation/recruitment of neutrophils may be beneficial, but may be harmful when unimpaired immune functions are mandatory.
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Affiliation(s)
- Alessandro Trentini
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Francesca Murganti
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
- Technische Universität Dresden, Research Center for Regenerative Therapies, 01307 Dresden, Germany.
| | - Valentina Rosta
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Carlo Cervellati
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Maria Cristina Manfrinato
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Savino Spadaro
- Section of Anesthesia and Intensive Care, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy.
| | - Franco Dallocchio
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
| | - Carlo Alberto Volta
- Section of Anesthesia and Intensive Care, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy.
| | - Tiziana Bellini
- Section of Medical Biochemistry, Molecular Biology and Genetics, Department of Biomedical and Specialist Surgical Sciences, University of Ferrara, 44121 Ferrara, Italy.
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