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Trital A, Xue W, Chen S. Development of a Negative-Biased Zwitterionic Polypeptide-Based Nanodrug Vehicle for pH-Triggered Cellular Uptake and Accelerated Drug Release. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:7181-7189. [PMID: 32551657 DOI: 10.1021/acs.langmuir.0c00166] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Albumin mimics could be an attractive platform for nanodrug carriers through systematic administration because of high safety and plentiful properties to be adjusted for a high drug efficacy, such as pH-triggered targeting cellular uptake and drug release. In this work, negative-biased zwitterionic nanodrug carriers based on zwitterionic polypeptide chains that mimic albumin were prepared, which have an outermost layer of zwitterionic glutamic acid (E) and lysine (K) pairs with a small amount of aspartic acid (D) to adjust the overall ζ potential. On the other hand, doxorubicin (Dox) was encapsulated in a hydrophobic core by 11-maleimidoundecanoic acid covalently linked with additional cysteine (C) residues on the polypeptide. The results show that the negative-biased zwitterionic nanodrug carriers can sensitively enhance the cellular uptake in responding to a pH change from 7.4 to 6.7 without reversing the ζ potential to a positive charge, leading to accelerating the Dox release rate in a slightly acidic environment through the polypeptide secondary structure change. Moreover, the anionic nanodrug carrier can also be easily enzymatically digested by trypsin for quick drug release. In short, this negative-biased zwitterionic nanodrug delivery vector could be an ideal candidate for a safer tumor inhibition with a high efficacy than conventional synthetic polymer-based ones.
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Affiliation(s)
- Ashish Trital
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Weili Xue
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Shengfu Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Zhejiang University-Quzhou, 78 Jiuhua Boulevard North, Quzhou, Zhejiang 324000, China
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, College of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210046, China
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52
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Blocher McTigue WC, Perry SL. Protein Encapsulation Using Complex Coacervates: What Nature Has to Teach Us. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e1907671. [PMID: 32363758 DOI: 10.1002/smll.201907671] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/05/2020] [Accepted: 03/09/2020] [Indexed: 06/11/2023]
Abstract
Protein encapsulation is a growing area of interest, particularly in the fields of food science and medicine. The sequestration of protein cargoes is achieved using a variety of methods, each with benefits and drawbacks. One of the most significant challenges associated with protein encapsulation is achieving high loading while maintaining protein viability. This difficulty is exacerbated because many encapsulant systems require the use of organic solvents. By contrast, nature has optimized strategies to compartmentalize and protect proteins inside the cell-a purely aqueous environment. Although the mechanisms whereby aspects of the cytosol is able to stabilize proteins are unknown, the crowded nature of many newly discovered, liquid phase separated "membraneless organelles" that achieve protein compartmentalization suggests that the material environment surrounding the protein may be critical in determining stability. Here, encapsulation strategies based on liquid-liquid phase separation, and complex coacervation in particular, which has many of the key features of the cytoplasm as a material, are reviewed. The literature on protein encapsulation via coacervation is also reviewed and the parameters relevant to creating protein-containing coacervate formulations are discussed. Additionally, potential opportunities associated with the creation of tailored materials to better facilitate protein encapsulation and stabilization are highlighted.
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Affiliation(s)
| | - Sarah L Perry
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA, 01003, USA
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53
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Moradi S, Mirzaei S, Khosravi R, Farhadian N, Hosseininezhadian Koushki E, Shahlaei M. Computational investigation on the effects of pharmaceutical polymers on the structure and dynamics of interleukin2 in heat stress. J Biomol Struct Dyn 2020; 39:4536-4546. [PMID: 32579062 DOI: 10.1080/07391102.2020.1784283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Application of proteinous drugs can be associated with difficulties during both in storage/transportation and in the body when they are used. However, using pharmaceutical carbohydrates that are widely employed in drug delivery systems, besides the drug can be protected, these systems leading to gradually release the drug over time, or deliver it to the target cell. Using a combination of molecular modeling and simulation techniques, in this study the effects of five carbohydrate polymers of Chitosan, Alginate, Cyclodextrin, Hyaluronic acid and Pectin on structure and dynamics of interleukin2 protein at 298 K and 343 K, are investigated. Data achieved using molecular modeling methods showed that when the temperature rises, the protein stability decreases. Among different polymers, Chitosan and Cyclodextrin have shown to be able to protect protein against the negative effects of high temperatures in comparison with other polymers which suggests that the use of Cyclodextrin biopolymer for the preparation of pharmaceutical formulations of interleukin2 can be the best possible choice among other polymers investigated in this research.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Sajad Moradi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Saba Mirzaei
- Pharmaceuticas Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Rasool Khosravi
- Pharmaceuticas Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Negin Farhadian
- Substance Abuse Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Elnaz Hosseininezhadian Koushki
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohsen Shahlaei
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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54
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Bai L, Fei Q, Lei F, Luo R, Ma Q, Dai M, Zhang H, He N. Comparative analysis of pharmacokinetics of vancomycin hydrochloride in rabbits after ocular, intragastric, and intravenous administration by LC-MS/MS. Xenobiotica 2020; 50:1461-1468. [PMID: 32452710 DOI: 10.1080/00498254.2020.1774681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The objective of this study was to compare the pharmacokinetics of vancomycin hydrochloride administered into rabbits through different routes and explore the feasibility of peptide drugs entering the systemic circulation through ocular administration. A convenient, accurate, and rapid liquid chromatography-trandem mass spectrometric (LC-MS/MS) method was established and used for the determination of vancomycin hydrochloride in rabbit plasma after intravenous administration (1.5 mg/kg), intragastric, and ocular administration (15 mg/kg). The pharmacokinetic parameters were analyzed using the DAS 2.0 software. We obtained a linear calibration curves vancomycin hydrochloride in plasma of rabbits over a concentration range of 0.05-10.0 μg/mL (R 2 > 0.9995), the interassay accuracy was within 5%, precision of 1.66-3.38%, and recovery of >85%. No matrix effects were observed. The absolute bioavailability of vancomycin hydrochloride after intragastric and ocular administration was 1.0 and 7.3%, with the half-life values of 63.1 and 138.5 min, respectively. Therefore, the LC-MS/MS method established in this experiment was suitable for the determination of vancomycin hydrochloride. Vancomycin hydrochloride was rapidly absorbed into the blood circulation after ocular administration. Ocular administration was linked to higher bioavailability compared with intragastric administration, suggesting that the former will become a route for the delivery of peptide drugs.
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Affiliation(s)
- Luyu Bai
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Qingsong Fei
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Fang Lei
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Rui Luo
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Qun Ma
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Manman Dai
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Huimin Zhang
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
| | - Ning He
- Department of Pharmaceutics, College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.,Anhui Academy of Chinese Medical Sciences, Institute of Pharmaceutics, Hefei, China.,Engineering Technology Research Center of Modernized Pharmaceutics, Hefei, China.,Key Laboratory of Chinese Medicinal Formula, Hefei, China
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55
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Li J, Yang L, Zhu C, Peng T, Huang D, Ma X, Pan X, Wu C. Release mechanisms of bovine serum albumin loaded-PLGA microspheres prepared by ultra-fine particle processing system. Drug Deliv Transl Res 2020; 10:1267-1277. [PMID: 32378176 DOI: 10.1007/s13346-020-00774-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The ultra-fine particle processing system (UPPS) previously developed by our lab has been used to prepare various microparticulate formulations. Microspheres prepared by UPPS can achieve sustained release with a reduced initial burst compared to the microspheres prepared by the conventional water-in-oil-in-water (W/O/W) double emulsion technique. However, the in vitro drug release mechanism of the microspheres prepared by UPPS is still uninvestigated. This study aimed to investigate the mechanisms of bovine serum albumin (BSA) released from poly (D,L-lactic-co-glycolic acid) (PLGA) microspheres prepared by UPPS in comparison with microspheres prepared by the W/O/W double emulsion technique. The morphology, in vitro drug release, water uptake, and structural evolution of microspheres prepared by both techniques were evaluated. UPPS microspheres showed solid and compact internal structures without any pores or channels thereby exhibiting a reduced rate of water permeation in the release medium. In addition, the release of BSA in UPPS microspheres was mainly controlled by the erosion of the polymer matrix during the entire process, while BSA was released from W/O/W microspheres by both drug diffusion and matrix erosion. Moreover, the observed surface and internal structural evolution also confirmed their different release mechanisms. This work elaborates the release mechanism of PLGA microspheres prepared by UPPS and facilitates the design of microparticulate formulations. Graphical abstract.
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Affiliation(s)
- Jing Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Li Yang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Chune Zhu
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
| | - Tingting Peng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Di Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
- Department of Animal Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Xiangyu Ma
- College of Pharmacy, University of Texas at Austin, 2409 University Avenue, Mail Stop A1920, Austin, TX, USA
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Chuanbin Wu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
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56
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Affiliation(s)
- Nejat K. Egilmez
- Department of Microbiology and Immunology, School of Medicine, University of Louisville, Louisville, KY, USA
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57
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Miao T, Little AC, Aronshtam A, Marquis T, Fenn SL, Hristova M, Krementsov DN, van der Vliet A, Spees JL, Oldinski RA. Internalized FGF-2-Loaded Nanoparticles Increase Nuclear ERK1/2 Content and Result in Lung Cancer Cell Death. NANOMATERIALS 2020; 10:nano10040612. [PMID: 32230722 PMCID: PMC7221911 DOI: 10.3390/nano10040612] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/13/2020] [Accepted: 03/16/2020] [Indexed: 12/15/2022]
Abstract
Innovative cancer treatments, which improve adjuvant therapy and reduce adverse events, are desperately needed. Nanoparticles provide controlled intracellular biomolecule delivery in the absence of activating external cell surface receptors. Prior reports suggest that intracrine signaling, following overexpression of basic fibroblast growth factor (FGF-2) after viral transduction, has a toxic effect on diseased cells. Herein, the research goals were to (1) encapsulate recombinant FGF-2 within stable, alginate-based nanoparticles (ABNs) for non-specific cellular uptake, and (2) determine the effects of ABN-mediated intracellular delivery of FGF-2 on cancer cell proliferation/survival. In culture, human alveolar adenocarcinoma basal epithelial cell line (A549s) and immortalized human bronchial epithelial cell line (HBE1s) internalized ABNs through non-selective endocytosis. Compared to A549s exposed to empty (i.e., blank) ABNs, the intracellular delivery of FGF-2 via ABNs significantly increased the levels of lactate dehydrogenase, indicating that FGF-2-ABN treatment decreased the transformed cell integrity. Noticeably, the nontransformed cells were not significantly affected by FGF-2-loaded ABN treatment. Furthermore, FGF-2-loaded ABNs significantly increased nuclear levels of activated-extracellular signal-regulated kinase ½ (ERK1/2) in A549s but had no significant effect on HBE1 nuclear ERK1/2 expression. Our novel intracellular delivery method of FGF-2 via nanoparticles resulted in increased cancer cell death via increased nuclear ERK1/2 activation.
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Affiliation(s)
- Tianxin Miao
- Bioengineering Program, College of Engineering and Mathematical Sciences, Larner College of Medicine, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA (S.L.F.)
| | - Andrew C. Little
- Cellular, Molecular and Biomedical Sciences Graduate Program, University of Vermont, Burlington, VT 05405, USA; (A.C.L.); (A.v.d.V.)
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT 05405, USA;
| | - Alexander Aronshtam
- Department of Medicine, Stem Cell Core, Larner College of Medicine, University of Vermont, Colchester, VT 05446, USA; (A.A.); (T.M.)
| | - Taylor Marquis
- Department of Medicine, Stem Cell Core, Larner College of Medicine, University of Vermont, Colchester, VT 05446, USA; (A.A.); (T.M.)
| | - Spencer L. Fenn
- Bioengineering Program, College of Engineering and Mathematical Sciences, Larner College of Medicine, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA (S.L.F.)
| | - Milena Hristova
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT 05405, USA;
| | - Dimitry N. Krementsov
- Department of Biomedical and Health Sciences, College of Nursing and Health Sciences, University of Vermont, Burlington, VT 05405, USA;
| | - Albert van der Vliet
- Cellular, Molecular and Biomedical Sciences Graduate Program, University of Vermont, Burlington, VT 05405, USA; (A.C.L.); (A.v.d.V.)
- Department of Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT 05405, USA;
| | - Jeffrey L. Spees
- Cellular, Molecular and Biomedical Sciences Graduate Program, University of Vermont, Burlington, VT 05405, USA; (A.C.L.); (A.v.d.V.)
- Department of Medicine, Stem Cell Core, Larner College of Medicine, University of Vermont, Colchester, VT 05446, USA; (A.A.); (T.M.)
- Correspondence: (J.L.S.); (R.A.O.); Tel.: +1-802-656-2388 (J.L.S.); +1-802-656-3338 (R.A.O.); Fax: +1-802-656-8932 (J.L.S.); +1-802-656-3358 (R.A.O.)
| | - Rachael A. Oldinski
- Bioengineering Program, College of Engineering and Mathematical Sciences, Larner College of Medicine, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA (S.L.F.)
- Department of Mechanical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA
- Department of Electrical and Biomedical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA
- Materials Science Program, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA
- Correspondence: (J.L.S.); (R.A.O.); Tel.: +1-802-656-2388 (J.L.S.); +1-802-656-3338 (R.A.O.); Fax: +1-802-656-8932 (J.L.S.); +1-802-656-3358 (R.A.O.)
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Akhavan Farid E, Davachi SM, Pezeshki-Modaress M, Taranejoo S, Seyfi J, Hejazi I, Tabatabaei Hakim M, Najafi F, D'Amico C, Abbaspourrad A. Preparation and characterization of polylactic-co-glycolic acid/insulin nanoparticles encapsulated in methacrylate coated gelatin with sustained release for specific medical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:910-937. [PMID: 32009574 DOI: 10.1080/09205063.2020.1725863] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
This study aimed to examine the possibility of using insulin orally with gelatin encapsulation to enhance the usefulness of the drug and increase the lifespan of insulin in the body using polylactic-co-glycolic acid (PLGA) nanoparticles alongside gelatin encapsulation. In this regard, PLGA was synthesized via ring opening polymerization, and PLGA/insulin nanoparticles were prepared by a modified emulsification-diffusion process. The resulting nanoparticles with various amounts of insulin were fully characterized using FTIR, DSC, DLS, zeta potential, SEM, and glucose uptake methods, with results indicating the interaction between the insulin and PLGA. The process efficiency of encapsulation was higher than 92%, while the encapsulation efficiency of nanoparticles, based on an insulin content of 20 to 40%, was optimized at 93%. According to the thermal studies, the PLGA encapsulation increases the thermal stability of the insulin. The morphological studies showed the fine dispersion of insulin in the PLGA matrix, which we further confirmed by the Kjeldahl method. According to the release studies and kinetics, in-vitro degradation, and particle size analysis, the sample loaded with 30% insulin showed optimum overall properties, and thus it was encapsulated with gelatin followed by coating with aqueous methacrylate coating. Release studies at pH values of 3 and 7.4, alongside the Kjeldahl method and standard dissolution test at pH 5.5, and glucose uptake assay tests clearly showed the capsules featured 3-4 h biodegradation resistance at a lower pH along with the sustained release, making these gelatin-encapsulated nanoparticles promising alternatives for oral applications.[Figure: see text].
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Affiliation(s)
- Elham Akhavan Farid
- Department of Chemical and Polymer Engineering, Faculty of Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Seyed Mohammad Davachi
- Soft Tissue Engineering Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran.,Department of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, USA
| | | | - Shahrouz Taranejoo
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Javad Seyfi
- Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran
| | - Iman Hejazi
- Soft Tissue Engineering Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Maryam Tabatabaei Hakim
- Soft Tissue Engineering Research Center, Tissue Engineering and Regenerative Medicine Institute, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Farhood Najafi
- Department of Resin and Additives, Institute for Color Science and Technology, Tehran, Iran
| | | | - Alireza Abbaspourrad
- Department of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY, USA
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Allahyari M, Mohabati R, Vatanara A, Golkar M. In-vitro and in-vivo comparison of rSAG1-loaded PLGA prepared by encapsulation and adsorption methods as an efficient vaccine against Toxoplasma gondii”. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101327] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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60
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Dabaghi N, Seyfoddin V, Toliyat T, Ataie Z. Preparation and in vitro release profiling of PLGA microspheres containing BSA as a model protein. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000418748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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61
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Park H, Ha DH, Ha ES, Kim JS, Kim MS, Hwang SJ. Effect of Stabilizers on Encapsulation Efficiency and Release Behavior of Exenatide-Loaded PLGA Microsphere Prepared by the W/O/W Solvent Evaporation Method. Pharmaceutics 2019; 11:E627. [PMID: 31771254 PMCID: PMC6955873 DOI: 10.3390/pharmaceutics11120627] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 11/20/2019] [Accepted: 11/21/2019] [Indexed: 12/22/2022] Open
Abstract
The aim of this study was to investigate the effects of various stabilizers on the encapsulation efficiency and release of exenatide-loaded PLGA (poly(lactic-co-glycolic acid)) microspheres prepared by the water-in-oil-in-water (W/O/W) solvent evaporation (SE) method. It was shown that the stabilizers affected exenatide stability in aqueous solutions, at water/dichloromethane interfaces, on PLGA surfaces, or during freeze-thawing and freeze-drying procedures. Sucrose predominantly reduces instability generated during freeze-thawing and freeze-drying. Phenylalanine prevents the destabilization at the water-dichloromethane (DCM) interface through decreased adsorption. Poloxamer 188 enhances stability in aqueous solutions and prevents adsorption to PLGA. Proline and lysine decrease adsorption on PLGA surfaces. Fourier transform infra-red spectroscopy (FT-IR) was used to find the molecular interaction of additives with exenatide or PLGA. Additives used in stability assessments were then added stepwise into the inner or outer water phase of the W/O/W double emulsion, and exenatide-loaded microspheres were prepared using the solvent evaporation method. The effect of each stabilizer on the encapsulation efficiency and release behavior of microspheres correlated well with the stability assessment results, except for the negative effect of poloxamer 188. Particle size analysis using laser diffractometry, scanning electron microscopy (SEM), water vapor sorption analysis, differential scanning calorimetry (DSC), and circular dichroism (CD) spectroscopy were also employed to characterize the prepared exenatide-loaded PLGA microsphere. This study demonstrated that an adequate formulation can be obtained by the study about the effect of stabilizers on peptide stability at the preformulation step. In addition, it can help to overcome various problems that can cause the destabilization of a peptide during the microsphere-manufacturing process and sustained drug release.
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Affiliation(s)
- Heejun Park
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Dong-Hyun Ha
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Eun-Sol Ha
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Jeong-Soo Kim
- Dong-A ST Co., Ltd., Giheung-gu, Yongin, Gyeonggi 446-905, Korea;
| | - Min-Soo Kim
- College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Korea; (H.P.); (D.-H.H.); (E.-S.H.)
| | - Sung-Joo Hwang
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon 21983, Korea
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62
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Kristó K, Szekeres M, Makai Z, Márki Á, Kelemen A, Bali L, Pallai Z, Dékány I, Csóka I. Preparation and investigation of core-shell nanoparticles containing human interferon-α. Int J Pharm 2019; 573:118825. [PMID: 31715360 DOI: 10.1016/j.ijpharm.2019.118825] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/18/2019] [Accepted: 10/25/2019] [Indexed: 10/25/2022]
Abstract
Sustained release of active interferon-α (IFN-α) has been achieved from core-shell nanoparticles (NPs) prepared by aqueous precipitation of IFN-α-enriched human serum albumin (HSA-IFN-α) and layer-by-layer (L-b-L) by coating of the IFN-α NPs with poly(sodium-4-styrene) sulphonate (PSS) and chitosan (Chit). The concentration and the pH of HSA solution were optimized during the development of this method. Dynamic light scattering (DLS), zeta-potential, thermal analysis (differential scanning calorimetry (DSC) and termogravimetry (TG)), X-ray diffraction (XRD), IFN-α activity and morphology (transmission electron microscope (TEM)) studies were used to control the preparation and analyse the products. The dissolution kinetics of NPs was measured in vitro over 7 days in Hanson dissolution tester with Millex membrane. In vivo studies in Pannon white rabbit detected steady IFN-α plasma level for 10 days after subcutaneous injection administration of the HSA-IFN-α NPs. The IFN-α plasma concentration was detected by using the enzyme-linked immunosorbent assay (ELISA) method. In the present paper we discuss the preparation method, the optimization steps and the results of in vitro and in vivo release studies. It was established that 76.13% HSA-IFN-α are encapsulated in the core-shell NPs.
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Affiliation(s)
- Katalin Kristó
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - Márta Szekeres
- Department of Physical Chemistry and Materials Science, University of Szeged, Aradi v.t.1, H-6720 Szeged, Hungary
| | - Zsolt Makai
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - Árpád Márki
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - András Kelemen
- Department of Applied Informatics, University of Szeged, Boldogasszony sgt. 6, H-6725 Szeged, Hungary
| | - László Bali
- Trigon Biotechnological Ltd., Bánk Bán u. 6, H-1115 Budapest Hungary
| | - Zsolt Pallai
- Trigon Biotechnological Ltd., Bánk Bán u. 6, H-1115 Budapest Hungary
| | - Imre Dékány
- Department of Physical Chemistry and Materials Science, University of Szeged, Aradi v.t.1, H-6720 Szeged, Hungary; Department of Medical Chemistry, University of Szeged, Dóm tét 8, H-6720 Szeged, Hungary
| | - Ildikó Csóka
- Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
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Palazzo I, Campardelli R, Scognamiglio M, Reverchon E. Zein/luteolin microparticles formation using a supercritical fluids assisted technique. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.09.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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64
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Patil S, Narvekar A, Puranik A, Jain R, Dandekar P. Formulation of Therapeutic Proteins: Strategies for Developing Oral Protein Formulations. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/9783527812172.ch12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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65
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Damera DP, Kaja S, Janardhanam LSL, Alim S, Venuganti VVK, Nag A. Synthesis, Detailed Characterization, and Dual Drug Delivery Application of BSA Loaded Aquasomes. ACS APPLIED BIO MATERIALS 2019; 2:4471-4484. [DOI: 10.1021/acsabm.9b00635] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | - Sk Alim
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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Ouyang H, Ang CY, Heng PWS, Chan LW. Effects of Drug Particle Size and Lipid Additives on Drug Release from Paraffin Wax Formulations Prepared by Spray Congealing Technique. AAPS PharmSciTech 2019; 20:303. [PMID: 31501994 DOI: 10.1208/s12249-019-1519-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 08/23/2019] [Indexed: 11/30/2022] Open
Abstract
Paraffin wax is a hydrophobic meltable material that can be suitably used in spray congealing to develop drug-loaded microparticles for sustained release, taste-masking or stability enhancement of drugs. However, these functional properties may be impaired if the drug particles are not completely embedded. Moreover, highly viscous melts are unsuitable for spray dispersion. In this study, the effects of drug particle size and lipid additives, namely stearic acid (SA), cetyl alcohol (CA) and cetyl esters (CE), on melt viscosity and extent of drug particles embedment were investigated. Spray congealing was conducted on the formulations, and the resultant microparticles were analysed for their size, drug content, extent of drug particles embedment and drug release. The melt viscosity increased with smaller solid inclusions while lipid additives decreased the viscosity to varying extents. The spray-congealed microparticle size was largely dependent on the viscosity. The addition of lipid additives to paraffin wax enabled more complete embedment of the drug particles. CA produced microparticles with the lowest drug release, followed by SA and CE. The addition of CA and CE enhanced the drug release and showed potential for taste-masking. Judicious choice of drug particle size and matrix materials is important for successful spray congealing to produce microparticles with the desired characteristics.
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67
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Wang J, Wang Y, Sun X, Liu D, Huang C, Wu J, Yang C, Zhang Q. Biomimetic cartilage scaffold with orientated porous structure of two factors for cartilage repair of knee osteoarthritis. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1710-1721. [PMID: 31062604 DOI: 10.1080/21691401.2019.1607866] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A dual-layer biomimetic cartilage scaffold was prepared by mimicking the structural design, chemical cues and mechanical characteristics of mature articular cartilage. The surface layer was made from collagen (COL), chitosan (CS) and hyaluronic acid sodium (HAS). The transitional layer with microtubule array structure was prepared with COL, CS and silk fibroin (SF). The PLAG microspheres containing kartogenin (KGN) and the polylysine-heparin sodium nanoparticles containing TGF-β1 (TPHNs) were constructed for the surface, transitional layer, respectively. The SEM result showed that the dual-layer composite scaffold had a double structure similar to natural cartilage. The vitro biocompatibility experiment showed that the biomimetic cartilage scaffold with orientated porous structure was more conducive to the proliferation and adhesion of BMSCs. A rabbit KOA cartilage defect model was established and biomimetic cartilage scaffolds were implanted in the defect area. Compared with the surface layer and transitional layer scaffolds group, the results of dual-layer biomimetic cartilage scaffold group showed that the defects had been completely filled, the boundary between new cartilage and surrounding tissue was difficult to identify, and the morphology of cells in repair tissue was almost in accordance with the normal cartilage after 16 weeks. All those results indicated that the biomimetic cartilage scaffold could effectively repair the defect of KOA, which is related to the fact that the scaffold could guide the morphology, orientation, and proliferation and differentiation of BMSCs. This work could potentially lead to the development of multilayer scaffolds mimicking the zonal organization of articular cartilage.
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Affiliation(s)
- Jianhua Wang
- a Institute of Biomedical and Pharmaceutical Technology, Fuzhou University , Fuzhou , China.,b Bote Biotech. Col., Ltd. , Fuzhou , China
| | - Yingying Wang
- a Institute of Biomedical and Pharmaceutical Technology, Fuzhou University , Fuzhou , China
| | - Xiaomin Sun
- c School of Materials Science and Engineering, South China University of Technology , Guangzhou , China
| | - Deshuai Liu
- a Institute of Biomedical and Pharmaceutical Technology, Fuzhou University , Fuzhou , China
| | - Chenguang Huang
- a Institute of Biomedical and Pharmaceutical Technology, Fuzhou University , Fuzhou , China
| | - Jiulin Wu
- a Institute of Biomedical and Pharmaceutical Technology, Fuzhou University , Fuzhou , China
| | - Chunrong Yang
- d Department of Materials Science and Engineering, Fujian University of Technology , Fuzhou , China
| | - Qiqing Zhang
- a Institute of Biomedical and Pharmaceutical Technology, Fuzhou University , Fuzhou , China
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Wei P, Jing W, Yuan Z, Huang Y, Guan B, Zhang W, Zhang X, Mao J, Cai Q, Chen D, Yang X. Vancomycin- and Strontium-Loaded Microspheres with Multifunctional Activities against Bacteria, in Angiogenesis, and in Osteogenesis for Enhancing Infected Bone Regeneration. ACS APPLIED MATERIALS & INTERFACES 2019; 11:30596-30609. [PMID: 31373193 DOI: 10.1021/acsami.9b10219] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Biomaterials that have capacities to simultaneously induce bone regeneration and kill bacteria are in demand because bone defects face risks of severe infection in clinical therapy. To meet the demand, multifunctional biodegradable microspheres are fabricated, which contain vancomycin to provide antibacterial activity and strontium-doped apatite to provide osteocompatibility. Moreover, the strontium component shows activity in promoting angiogenesis, which further favors osteogenesis. For producing the microspheres, vancomycin is loaded into mesoporous silica and embedded in polylactide-based microspheres via the double emulsion technique and the strontium-doped apatite is deposited onto the microspheres via biomineralization in strontium-containing simulated body fluid. Sustained release behaviors of both vancomycin and Sr2+ ions are achieved. The microspheres exhibit strong antibacterial effect against Staphylococcus aureus, while demonstrating excellent cell/tissue compatibility. Studies of differentiation confirm that the introduction of strontium element strengthens the angiogenic and osteogenic expressions of mesenchymal stromal cells. Subcutaneous injection of the microspheres into rabbit's back confirms their effectiveness in inducing neovascularization and ectopic osteogenesis. Finally, an infected rabbit femoral condyle defect model is created with S. aureus infection and the multifunctional microspheres are injected, which display significant antibacterial activity in vivo and achieve efficient new bone formation in comparison with biomineralized microspheres without vancomycin loading. The vancomycin- and strontium-loaded microspheres, being biomineralized, injectable, and biodegradable, are attractive because of their flexibility in integrating multiple functions into one design, whose potentials in treating infected bone defects are highly expected.
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Affiliation(s)
- Pengfei Wei
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Wei Jing
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Zuoying Yuan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Yiqian Huang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | - Binbin Guan
- Department of Stomatology , Tianjin Medical University General Hospital , Tianjin 300052 , P. R. China
| | - Wenxin Zhang
- Department of Endodontics, School and Hospital of Stomatology , Tianjin Medical University , Tianjin 300070 , P. R. China
| | - Xu Zhang
- Department of Endodontics, School and Hospital of Stomatology , Tianjin Medical University , Tianjin 300070 , P. R. China
| | | | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
| | | | - Xiaoping Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials , Beijing University of Chemical Technology , Beijing 100029 , P. R. China
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Brovold M, Almeida JI, Pla-Palacín I, Sainz-Arnal P, Sánchez-Romero N, Rivas JJ, Almeida H, Dachary PR, Serrano-Aulló T, Soker S, Baptista PM. Naturally-Derived Biomaterials for Tissue Engineering Applications. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1077:421-449. [PMID: 30357702 PMCID: PMC7526297 DOI: 10.1007/978-981-13-0947-2_23] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Naturally-derived biomaterials have been used for decades in multiple regenerative medicine applications. From the simplest cell microcarriers made of collagen or alginate, to highly complex decellularized whole-organ scaffolds, these biomaterials represent a class of substances that is usually first in choice at the time of electing a functional and useful biomaterial. Hence, in this chapter we describe the several naturally-derived biomaterials used in tissue engineering applications and their classification, based on composition. We will also describe some of the present uses of the generated tissues like drug discovery, developmental biology, bioprinting and transplantation.
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Affiliation(s)
- Matthew Brovold
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC, USA
| | - Joana I Almeida
- Health Research Institute of Aragón (IIS Aragón), Zaragoza, Spain
| | - Iris Pla-Palacín
- Health Research Institute of Aragón (IIS Aragón), Zaragoza, Spain
| | - Pilar Sainz-Arnal
- Health Research Institute of Aragón (IIS Aragón), Zaragoza, Spain
- Aragon Health Sciences Institute (IACS), Zaragoza, Spain
| | | | - Jesus J Rivas
- Health Research Institute of Aragón (IIS Aragón), Zaragoza, Spain
| | - Helen Almeida
- Health Research Institute of Aragón (IIS Aragón), Zaragoza, Spain
| | - Pablo Royo Dachary
- Instituto de Investigación Sanitária de Aragón (IIS Aragón), Zaragoza, Spain
- Liver Transplant Unit, Gastroenterology Department, Lozano Blesa University Hospital, Zaragoza, Spain
| | - Trinidad Serrano-Aulló
- Instituto de Investigación Sanitária de Aragón (IIS Aragón), Zaragoza, Spain
- Liver Transplant Unit, Gastroenterology Department, Lozano Blesa University Hospital, Zaragoza, Spain
| | - Shay Soker
- Wake Forest Institute for Regenerative Medicine, Winston-Salem, NC, USA.
| | - Pedro M Baptista
- Instituto de Investigación Sanitária de Aragón (IIS Aragón), Zaragoza, Spain.
- Center for Biomedical Research Network Liver and Digestive Diseases (CIBERehd), Zaragoza, Spain.
- Instituto de Investigación Sanitaria de la Fundación Jiménez Díaz, Madrid, Spain.
- Biomedical and Aerospace Engineering Department, Universidad Carlos III de Madrid, Madrid, Spain.
- Fundación ARAID, Zaragoza, Spain.
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70
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Injectable biomaterials for delivery of interleukin-1 receptor antagonist: Toward improving its therapeutic effect. Acta Biomater 2019; 93:123-134. [PMID: 31029831 DOI: 10.1016/j.actbio.2019.04.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 04/15/2019] [Accepted: 04/23/2019] [Indexed: 01/31/2023]
Abstract
Interleukin-1 receptor antagonist (IL-1Ra) is a naturally occurring anti-inflammatory cytokine that inhibits IL-1 activity and has been proposed to treat a wide variety of systemic and local inflammatory pathologies for multiple decades. However, the short half-life and high concentration required to inhibit IL-1 activity has limited its use in clinical applications. Many strategies have been developed with the goal of improving the therapeutic efficacy of IL-1Ra for a variety of pathologies, including fusing IL-1Ra to protein/peptide/polymer partners, releasing IL-1Ra from injectable polymer or mineral particles, and release of IL-1Ra from injectable coacervates and gels. This literature review examines injectable biomaterials engineered to improve IL-1Ra delivery, both locally and systemically, to increase its efficacy and ease of use in clinic. STATEMENT OF SIGNIFICANCE: Interleukin-1 receptor antagonist (IL-1Ra) is a therapeutic protein with the potential to treat numerous inflammatory conditions and diseases. However, its short biological half-life and high therapeutic concentration may limit its utility in all but a few clinical scenarios. In this review, we present the biomaterial based delivery strategies which have been explored to deliver IL-1Ra to improve its efficacy and applicability to treat inflammation.
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Yang F, Niu X, Gu X, Xu C, Wang W, Fan Y. Biodegradable Magnesium-Incorporated Poly(l-lactic acid) Microspheres for Manipulation of Drug Release and Alleviation of Inflammatory Response. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23546-23557. [PMID: 31252468 DOI: 10.1021/acsami.9b03766] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Poly(l-lactic acid) (PLLA) and magnesium (Mg) are widely concerned biodegradable materials, but during in vivo implantation, the former produces acidic degradation byproducts and can easily induce inflammation in surrounding tissues, whereas the latter is fast corroded and generates alkaline products. The purpose of this study is to develop Mg/PLLA composite microspheres as a novel delivery system, in which Mg particles are used to regulate the drug release profile and suppress PLLA-induced inflammatory response. Morphological observation shows that multiple Mg particles are dispersed both on the surface and in the interior of composite microspheres. In vitro release study indicates that by varying the Mg contents or its particle sizes, the internal connectivity of composite microspheres is changed during hydrolytic degradation, and drug delivery can be facilely manipulated with tunable release patterns. In vivo release study further confirms the feasibility of Mg/PLLA microspheres for tailoring drug release in a physiological environment. The animal experiment reveals that Mg particles can alleviate macrophage infiltration and inflammatory cytokine expression. These results demonstrate the availability of using biodegradable Mg particles to manipulate drug release as well as alleviate PLLA-induced inflammation. The present Mg/PLLA composite microspheres have potential applications in controlled delivery of various therapeutic agents, especially some growth factors, for bone regeneration.
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Affiliation(s)
- Fenghe Yang
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering , Beihang University , Beijing 100083 , China
- Beijing Advanced Innovation Centre for Biomedical Engineering , Beihang University , Beijing 100083 , China
| | - Xufeng Niu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering , Beihang University , Beijing 100083 , China
- Beijing Advanced Innovation Centre for Biomedical Engineering , Beihang University , Beijing 100083 , China
- Research Institute of Beihang University in Shenzhen , Shenzhen 518057 , China
| | - Xuenan Gu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering , Beihang University , Beijing 100083 , China
- Beijing Advanced Innovation Centre for Biomedical Engineering , Beihang University , Beijing 100083 , China
| | - Chuanping Xu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering , Beihang University , Beijing 100083 , China
- Beijing Advanced Innovation Centre for Biomedical Engineering , Beihang University , Beijing 100083 , China
| | - Wei Wang
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology , Peking University , Beijing 100191 , China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering , Beihang University , Beijing 100083 , China
- Beijing Advanced Innovation Centre for Biomedical Engineering , Beihang University , Beijing 100083 , China
- Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability , National Research Center for Rehabilitation Technical Aids , Beijing 100176 , China
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Arrighi A, Marquette S, Peerboom C, Denis L, Goole J, Amighi K. Development of PLGA microparticles with high immunoglobulin G-loaded levels and sustained-release properties obtained by spray-drying a water-in-oil emulsion. Int J Pharm 2019; 566:291-298. [DOI: 10.1016/j.ijpharm.2019.05.070] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/24/2019] [Accepted: 05/27/2019] [Indexed: 11/24/2022]
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73
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Blasi P. Poly(lactic acid)/poly(lactic-co-glycolic acid)-based microparticles: an overview. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2019. [DOI: 10.1007/s40005-019-00453-z] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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74
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Zalloum N, Albino de Souza G, Martins TD. Single-Emulsion P(HB-HV) Microsphere Preparation Tuned by Copolymer Molar Mass and Additive Interaction. ACS OMEGA 2019; 4:8122-8135. [PMID: 31459903 PMCID: PMC6648277 DOI: 10.1021/acsomega.9b00824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 04/25/2019] [Indexed: 06/10/2023]
Abstract
Herein, we describe the production of poly(hydroxybutyrate-co-hydroxyvalerate) [P(HB-HV)]-based microspheres containing coumarin-6 (C6) or pyrene (Py) fluorophores as additives and models for hydrophobic and hydrophilic drug encapsulation. Their photophysical and morphological properties, as well as encapsulation efficiencies, are studied as this work aims to describe the influence of additive hydrophobicity/hydrophilicity on microparticle formation. These properties were studied by scanning electron microscopy, fluorescence confocal laser scanning microscopy (FCLSM), and steady-state fluorescence spectroscopy. The results show that the surfactant concentration, polymer molar mass, emulsification stirring rate, and the presence of the fluorophore and its nature are determinants of the P(HB-HV) microsphere properties. Also, encapsulation efficiency is shown to be governed by synergic effects of these parameters on the formation of microspheres. Moreover, size distribution is proved to be strongly influenced by the surfactant poly(vinyl alcohol) content. FCLSM showed that the fluorophores were efficiently encapsulated in P(HB-HV) microspheres at distinct distributions within the copolymer matrix. Surprisingly, nanospheres were observed in the microsphere surface, suggesting that microspheres are formed from nanosphere coalescence.
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Affiliation(s)
- Neife
Lilian Zalloum
- Chemistry
Institute, State University of Campinas, P.O. Box 6154, 13083-971 Campinas, São Paulo, Brazil
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75
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Construction and Structural Assessment of Nanocapsule Containing HER2-MUC1 Chimeric Protein as a Candidate for a Vaccine Against Breast Cancer. INTERNATIONAL JOURNAL OF CANCER MANAGEMENT 2019. [DOI: 10.5812/ijcm.66671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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76
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Souery WN, Arun Kumar S, Prasca-Chamorro D, Moore DM, Good J, Bishop CJ. Controlling and quantifying the stability of amino acid-based cargo within polymeric delivery systems. J Control Release 2019; 300:102-113. [PMID: 30826372 DOI: 10.1016/j.jconrel.2019.02.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 02/26/2019] [Accepted: 02/27/2019] [Indexed: 12/23/2022]
Abstract
In recent years, the rapid growth and availability of protein and peptide therapeutics has not only expanded the boundaries of modern science but has also revolutionized the practice of medicine today. The potential of such therapies, however, is greatly limited by the innate instabilities of proteins and peptides, which is further magnified during therapeutic formulation processing, transport, storage, and administration. In this paper, we will consider the unique stability challenges associated with protein/peptide polymeric delivery systems from an engineering approach oriented towards the quantification and modification of amino acid-based cargo stability. While a number of methods have been developed for the purposes of quantifying factors affecting protein and peptide stability, current measurement techniques remain largely limited in scope in regard to polymeric drug delivery systems. This paper will primarily describe the influence of water content, pH, and temperature on protein and peptide stability within polymer-based delivery systems. Moreover, we will review current instrumentation used to quantify factors affecting protein/peptide stability with respect to water content, pH, and temperature. Lastly, we will outline several recommendations to help guide future research efforts to develop methods more specific to quantifying protein/peptide stability within polymer-based delivery systems.
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Affiliation(s)
- Whitney Nicole Souery
- Department of Biomedical Engineering, Texas A&M University, Emerging Technologies Building, 101 Bizzell St., College Station, TX 77843, USA.
| | - Shreedevi Arun Kumar
- Department of Biomedical Engineering, Texas A&M University, Emerging Technologies Building, 101 Bizzell St., College Station, TX 77843, USA.
| | - Daniel Prasca-Chamorro
- Department of Biomedical Engineering, Texas A&M University, Emerging Technologies Building, 101 Bizzell St., College Station, TX 77843, USA.
| | - David Mitchell Moore
- Department of Biomedical Engineering, Texas A&M University, Emerging Technologies Building, 101 Bizzell St., College Station, TX 77843, USA.
| | - Jacob Good
- Department of Biomedical Engineering, Texas A&M University, Emerging Technologies Building, 101 Bizzell St., College Station, TX 77843, USA.
| | - Corey J Bishop
- Department of Biomedical Engineering, Texas A&M University, Emerging Technologies Building, 101 Bizzell St., College Station, TX 77843, USA.
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77
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Zhao Q, Wang M. Manipulating the release of growth factors from biodegradable microspheres for potentially different therapeutic effects by using two different electrospray techniques for microsphere fabrication. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.02.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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78
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Liu X, Toprakcioglu Z, Dear AJ, Levin A, Ruggeri FS, Taylor CG, Hu M, Kumita JR, Andreasen M, Dobson CM, Shimanovich U, Knowles TPJ. Fabrication and Characterization of Reconstituted Silk Microgels for the Storage and Release of Small Molecules. Macromol Rapid Commun 2019; 40:e1800898. [DOI: 10.1002/marc.201800898] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/18/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Xizhou Liu
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Zenon Toprakcioglu
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Alexander J. Dear
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Aviad Levin
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Francesco Simone Ruggeri
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Christopher G. Taylor
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Mengsha Hu
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Janet R. Kumita
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Maria Andreasen
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Dr. M. AndreasenAarhus University Wilhelm Meyer's Allé 3 8000 Aarhus Denmark
| | - Christopher M. Dobson
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | | | - Tuomas P. J. Knowles
- X. Liu, Z. Toprakcioglu, A. J. Dear, Dr. A. Levin, Dr. F. S. Ruggeri, C. G. Taylor, M. Hu, Dr. J. R. Kumita, Dr. M. Andreasen, Prof. C. M. Dobson, Prof. T. P. J. KnowlesDepartment of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Prof. T. P. J. KnowlesDepartment of Physics J J Thomson Avenue Cambridge CB3 0HE UK
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The ocular pharmacokinetics and biodistribution of phospho-sulindac (OXT-328) formulated in nanoparticles: Enhanced and targeted tissue drug delivery. Int J Pharm 2019; 557:273-279. [DOI: 10.1016/j.ijpharm.2018.12.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 12/14/2018] [Accepted: 12/21/2018] [Indexed: 12/18/2022]
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80
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Foroutan M, Ghaffarifar F, Sharifi Z, Dalimi A, Jorjani O. Rhoptry antigens as Toxoplasma gondii vaccine target. Clin Exp Vaccine Res 2019; 8:4-26. [PMID: 30775347 PMCID: PMC6369123 DOI: 10.7774/cevr.2019.8.1.4] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 07/10/2018] [Accepted: 01/14/2019] [Indexed: 01/14/2023] Open
Abstract
Toxoplasmosis is a cosmopolitan zoonotic infection, caused by a unicellular protozoan parasite known as Toxoplasma gondii that belongs to the phylum Apicomplexa. It is estimated that over one-third of the world's population has been exposed and are latently infected with the parasite. In humans, toxoplasmosis is predominantly asymptomatic in immunocompetent persons, while among immunocompromised individuals may be cause severe and progressive complications with poor prognosis. Moreover, seronegative pregnant mothers are other risk groups for acquiring the infection. The life cycle of T. gondii is very complex, indicating the presence of a plurality of antigenic epitopes. Despite of great advances, recognize and construct novel vaccines for prevent and control of toxoplasmosis in both humans and animals is still remains a great challenge for researchers to select potential protein sequences as the ideal antigens. Notably, in several past years, constant efforts of researchers have made considerable advances to elucidate the different aspects of the cell and molecular biology of T. gondii mainly on microneme antigens, dense granule antigens, surface antigens, and rhoptry proteins (ROP). These attempts thereby provided great impetus to the present focus on vaccine development, according to the defined subcellular components of the parasite. Although, currently there is no commercial vaccine for use in humans. Among the main identified T. gondii antigens, ROPs appear as a putative vaccine candidate that are vital for invasion procedure as well as survival within host cells. Overall, it is estimated that they occupy about 1%–30% of the total parasite cell volume. In this review, we have summarized the recent progress of ROP-based vaccine development through various strategies from DNA vaccines, epitope or multi epitope-based vaccines, recombinant protein vaccines to vaccines based on live-attenuated vectors and prime-boost strategies in different mouse models.
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Affiliation(s)
- Masoud Foroutan
- Abadan School of Medical Sciences, Abadan, Iran.,Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Fatemeh Ghaffarifar
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Zohreh Sharifi
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| | - Abdolhosein Dalimi
- Department of Parasitology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Ogholniaz Jorjani
- Laboratory Science Research Center, Golestan University of Medical Sciences, Gorgan, Iran
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81
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Wei PF, Yuan ZY, Jing W, Guan BB, Liu ZH, Zhang X, Mao JP, Chen DF, Cai Q, Yang XP. Regenerating infected bone defects with osteocompatible microspheres possessing antibacterial activity. Biomater Sci 2019; 7:272-286. [PMID: 30467569 DOI: 10.1039/c8bm00903a] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Treatment of infected bone defects still remains a formidable clinical challenge, and the design of bone implants with both anti-bacterial activity and osteogenesis effects is nowadays regarded as a powerful strategy for infection control and bone healing.
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Affiliation(s)
- Peng-Fei Wei
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Zuo-Ying Yuan
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Wei Jing
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Bin-Bin Guan
- Department of Stomatology
- Tianjin Medical University General Hospital
- Tianjin 300052
- P.R. China
| | - Zi-Hao Liu
- Department of Endodontics
- School and Hospital of Stomatology
- Tianjin Medical University
- Tianjin 300070
- P.R. China
| | - Xu Zhang
- Department of Endodontics
- School and Hospital of Stomatology
- Tianjin Medical University
- Tianjin 300070
- P.R. China
| | - Jian-Ping Mao
- Department of Spine Surgery
- Beijing Jishuitan Hospital
- Beijing 100035
- P.R. China
| | - Da-Fu Chen
- Laboratory of Bone Tissue Engineering
- Beijing Research institute of Traumatology and Orthopaedics
- Beijing Jishuitan Hospital
- Beijing 100035
- P.R. China
| | - Qing Cai
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
| | - Xiao-Ping Yang
- State Key Laboratory of Organic-Inorganic Composites; Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology
- Beijing 100029
- P.R. China
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82
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Zhong H, Chan G, Hu Y, Hu H, Ouyang D. A Comprehensive Map of FDA-Approved Pharmaceutical Products. Pharmaceutics 2018; 10:E263. [PMID: 30563197 PMCID: PMC6321070 DOI: 10.3390/pharmaceutics10040263] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 11/28/2018] [Accepted: 11/30/2018] [Indexed: 12/19/2022] Open
Abstract
With the increasing research and development (R&D) difficulty of new molecular entities (NMEs), novel drug delivery systems (DDSs) are attracting widespread attention. This review investigated the current distribution of Food and Drug Administration (FDA)-approved pharmaceutical products and evaluated the technical barrier for the entry of generic drugs and highlighted the success and failure of advanced drug delivery systems. According to the ratio of generic to new drugs and the four-quadrant classification scheme for evaluating the commercialization potential of DDSs, the results showed that the traditional dosage forms (e.g., conventional tablets, capsules and injections) with a lower technology barrier were easier to reproduce, while advanced drug delivery systems (e.g., inhalations and nanomedicines) with highly technical barriers had less competition and greater market potential. Our study provides a comprehensive insight into FDA-approved products and deep analysis of the technical barriers for advanced drug delivery systems. In the future, the R&D of new molecular entities may combine advanced delivery technologies to make drug candidates into more therapeutically effective formulations.
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Affiliation(s)
- Hao Zhong
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau 999078, China.
| | - Ging Chan
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau 999078, China.
| | - Yuanjia Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau 999078, China.
| | - Hao Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau 999078, China.
| | - Defang Ouyang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences (ICMS), University of Macau, Macau 999078, China.
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83
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Yin R, Bai M, He J, Nie J, Zhang W. Concanavalin A-sugar affinity based system: Binding interactions, principle of glucose-responsiveness, and modulated insulin release for diabetes care. Int J Biol Macromol 2018; 124:724-732. [PMID: 30502436 DOI: 10.1016/j.ijbiomac.2018.11.261] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 11/19/2018] [Accepted: 11/27/2018] [Indexed: 11/19/2022]
Abstract
The glucose-responsive behavior of the Con A-sugar affinity based hydrogels, microgels, films and nanoparticles has been widely investigated in the application of drug delivery and biosensors. However, the principle or mechanism of such systems is not well known in literature. In this study, for the first time, the glucose-responsive principle (or principle) of the Con A-sugar based system was detailedly explained through the binding interactions test by isothermal titration calorimetry and ligand binding theory. The study also successfully resolved the controversy regarding the principle of such systems in literature. The other contribution of the study is the experimental validation that the insulin-loaded microgels with different hydrogel-network compositions (based on Con A-sugar affinity) respond to different glucose concentrations. Particularly, the result of the in vitro insulin release suggests that the microgels be able to maintain bolus and basal insulin release in response to different glucose concentrations and the network composition be able to affect the burst release, release rate and overall release amount of insulin. Further, the released insulin has been shown to remain active and the microgels possess no in vitro cytotoxicity to HDF cells. The second contribution is a first step towards the realization of personalized diabetes care.
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Affiliation(s)
- Ruixue Yin
- Complex and Intelligent Systems Research Center, East China University of Science and Technology, Shanghai, PR China; Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, Canada.
| | - Meirong Bai
- Changzhou Institute of Advanced Materials, Beijing University of Chemical Technology, Changzhou, Jiangsu, PR China
| | - Jing He
- Complex and Intelligent Systems Research Center, East China University of Science and Technology, Shanghai, PR China
| | - Jun Nie
- Changzhou Institute of Advanced Materials, Beijing University of Chemical Technology, Changzhou, Jiangsu, PR China
| | - Wenjun Zhang
- Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, Canada.
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84
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Mezu-Ndubuisi OJ, Wang Y, Schoephoerster J, Falero-Perez J, Zaitoun IS, Sheibani N, Gong S. Intravitreal Delivery of VEGF-A 165-loaded PLGA Microparticles Reduces Retinal Vaso-Obliteration in an In Vivo Mouse Model of Retinopathy of Prematurity. Curr Eye Res 2018; 44:275-286. [PMID: 30383455 DOI: 10.1080/02713683.2018.1542736] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
PURPOSE Retinopathy of prematurity (ROP) is a condition of abnormal retinal vascularization with reduced levels of vascular endothelial growth factor (VEGF) causing vaso-obliteration (Phase I), followed by abnormal neovascularization from increased VEGF (Phase II). We hypothesized that intravitreal pro-angiogenic VEGF-A in microparticle form would promote earlier retinal revascularization in an oxygen-induced ischemic retinopathy (OIR) mouse model. MATERIALS AND METHODS Wildtype mice (39) were exposed to 77% oxygen from postnatal day 7 (P7) to P12. VEGF-A165-loaded poly(lactic-co-glycolic acid) (PLGA) (n = 15) or empty PLGA (n = 14) microparticles were fabricated using a water-in-oil-in-water double emulsion method, and injected intravitreally at P13 into mice right eyes (RE). Left eyes (LE) were untreated. At P20, after retinal fluorescein angiography, vascular parameters were quantified. Retinal VEGF levels at P13 and flatmounts at P20 were performed separately. RESULTS VEGF-A165-loaded microparticles had a mean diameter of 4.2 μm. with a loading level of 8.6 weight.%. Retinal avascular area was reduced in VEGF-treated RE (39.5 ± 9.0%) compared to untreated LE (52.6 ± 6.1%, p < 0.0001) or empty microparticle-treated RE (p < 0.001) and untreated LEs (p = 0.001). Retinal arteries in VEGF-treated RE were less tortuous than untreated LE (1.08 ± 0.05 vs. 1.18 ± 0.08, p < 0.001) or empty-microparticles-treated RE (p = 0.02). Retinal arterial tortuosity was similar in the LE of VEGF and empty microparticle-treated mice (P > 0.05). Retinal vein width was similar in VEGF-treated and empty microparticle-treated RE (P > 0.9), which were each less dilated than their contralateral LE (p < 0.01). VEGF levels were higher in P13 OIR mice than RA mice (p < 0.0001). Retinal flatmounts showed vaso-obliteration and neovascularization. CONCLUSIONS Endogenous retinal VEGF is suppressed in OIR mice. Exogenous intravitreal VEGF-A165-loaded microparticles in OIR mice reduced retinal vaso-obliteration and accelerated recovery from vein dilation and arterial tortuosity. This may be beneficial in preventing Phase II ROP without systemic effects.
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Affiliation(s)
- Olachi J Mezu-Ndubuisi
- a Department of Pediatrics , University of Wisconsin-Madison , Madison , WI , USA.,b Department of Ophthalmology and Visual Sciences , University of Wisconsin-Madison , Madison , WI , USA
| | - Yuyuan Wang
- c Department of Materials Science and Engineering and Wisconsin Institute for Discovery , University of Wisconsin-Madison , Madison , WI , USA
| | - Jamee Schoephoerster
- a Department of Pediatrics , University of Wisconsin-Madison , Madison , WI , USA
| | - Juliana Falero-Perez
- b Department of Ophthalmology and Visual Sciences , University of Wisconsin-Madison , Madison , WI , USA
| | - Ismail S Zaitoun
- b Department of Ophthalmology and Visual Sciences , University of Wisconsin-Madison , Madison , WI , USA
| | - Nader Sheibani
- b Department of Ophthalmology and Visual Sciences , University of Wisconsin-Madison , Madison , WI , USA.,d Department of Biomedical Engineering , University of Wisconsin-Madison , Madison , WI , USA
| | - Shaoqin Gong
- c Department of Materials Science and Engineering and Wisconsin Institute for Discovery , University of Wisconsin-Madison , Madison , WI , USA.,d Department of Biomedical Engineering , University of Wisconsin-Madison , Madison , WI , USA
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85
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Towards the development of a supercritical carbon dioxide spray process to coat solid protein particles. J Supercrit Fluids 2018. [DOI: 10.1016/j.supflu.2017.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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86
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Tabrizi NM, Amani J, Ebrahimzadeh M, Nazarian S, Kazemi R, Almasian P. Preparation and evaluation of chitosan nanoparticles containing CtxB antigen against Vibrio cholera. Microb Pathog 2018; 124:170-177. [DOI: 10.1016/j.micpath.2018.08.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/13/2018] [Accepted: 08/18/2018] [Indexed: 01/23/2023]
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87
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Ding D, Zhu Q. Recent advances of PLGA micro/nanoparticles for the delivery of biomacromolecular therapeutics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:1041-1060. [DOI: 10.1016/j.msec.2017.12.036] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/18/2017] [Accepted: 12/30/2017] [Indexed: 01/06/2023]
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88
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Silk fibroin-based hydrogels as a protective matrix for stabilization of enzymes against pH denaturation. MOLECULAR CATALYSIS 2018. [DOI: 10.1016/j.mcat.2018.07.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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89
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Hajavi J, Ebrahimian M, Sankian M, Khakzad MR, Hashemi M. Optimization of PLGA formulation containing protein or peptide-based antigen: Recent advances. J Biomed Mater Res A 2018; 106:2540-2551. [DOI: 10.1002/jbm.a.36423] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/25/2018] [Accepted: 03/15/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Jafar Hajavi
- Department of Basic Sciences, Faculty of Allied Medicine; Gonabad University of Medical Sciences; Gonabad Iran
- Immunology Research Center, Medical School, Mashhad University of Medical Sciences; Mashhad Iran
| | - Mahboubeh Ebrahimian
- Division of Biotechnology, Faculty of Veterinary Medicine; Ferdowsi University of Mashhad; Mashhad Iran
| | - Mojtaba Sankian
- Immunology Research Center, Medical School, Mashhad University of Medical Sciences; Mashhad Iran
- Department of Immunology, Faculty of Medicine; Mashhad University of Medical Sciences; Mashhad Iran
| | - Mohammad Reza Khakzad
- Innovated Medical Research Center & Department of Immunology; Mashhad Branch, Islamic Azad University; Mashhad Iran
| | - Maryam Hashemi
- Nanotechnology Research Center; Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences; Mashhad Iran
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90
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Aflibercept Nanoformulation Inhibits VEGF Expression in Ocular In Vitro Model: A Preliminary Report. Biomedicines 2018; 6:biomedicines6030092. [PMID: 30208574 PMCID: PMC6165497 DOI: 10.3390/biomedicines6030092] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 08/28/2018] [Accepted: 09/06/2018] [Indexed: 11/16/2022] Open
Abstract
Age-related macular degeneration (AMD) is one of the leading causes of blindness in the United States, affecting approximately 11 million patients. AMD is caused primarily by an upregulation of vascular endothelial growth factor (VEGF). In recent years, aflibercept injections have been used to combat VEGF. However, this treatment requires frequent intravitreal injections, leading to low patient compliance and several adverse side effects including scarring, increased intraocular pressure, and retinal detachment. Polymeric nanoparticles have demonstrated the ability to deliver a sustained release of drug, thereby reducing the necessary injection frequency. Aflibercept (AFL) was encapsulated in poly lactic-co-glycolic acid (PLGA) nanoparticles (NPs) via double emulsion diffusion. Scanning electron microscopy showed the NPs were spherical and dynamic light scattering demonstrated that they were uniformly distributed (PDI < 1). The encapsulation efficiency and drug loading were 75.76% and 7.76% respectively. In vitro release studies showed a sustained release of drug; 75% of drug was released by the NPs in seven days compared to the full payload released in 24 h by the AFL solution. Future ocular in vivo studies are needed to confirm the biological effects of the NPs. Preliminary studies of the proposed aflibercept NPs demonstrated high encapsulation efficiency, a sustained drug release profile, and ideal physical characteristics for AMD treatment. This drug delivery system is an excellent candidate for further characterization using an ocular neovascularization in vivo model.
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91
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92
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Zhang Y, Fei S, Yu M, Guo Y, He H, Zhang Y, Yin T, Xu H, Tang X. Injectable sustained release PLA microparticles prepared by solvent evaporation-media milling technology. Drug Dev Ind Pharm 2018; 44:1591-1597. [PMID: 29847181 DOI: 10.1080/03639045.2018.1483382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
The objective of this study was to develop agomelatine (AGM) intramuscular sustained release PLA microparticles by using solvent evaporation combined with wet milling technology. The final preparation had a regular and homogeneous particle size of approximately 35 µm, as measured by laser diffraction particle size analysis and scanning electron microscopy (SEM). The drug was confirmed to be within the carrier in an amorphous state through differential scanning calorimetry (DSC) and power X-ray diffraction (PXRD) experiments. Additionally, Fourier transform infrared spectroscopy (FT-IR) analysis was applied to confirm that there was hydrogen bonding between the drug and polymer at the molecular level. In vitro release experiments indicated that the drug could achieve long-term sustained release over the period of one month, with only a 3.07% burst release, due to the involvement of the polymer and removal of drug adsorbed on the surface during the wet grinding process. The dominant release mechanism was considered to be diffusion of the drugs in the initial period. Following this, with the hydrolysis of PLA to form a colloidal viscous layer, drug release is due to the combined effect of diffusion and erosion of the polymer matrix. Additionally, drug release behavior is closely related to the degradation mechanism of the polymer carrier. The results suggest that AGM could be developed as a potential delivery system for long-acting intramuscular administration with extensive application prospects.
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Affiliation(s)
- Yan Zhang
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Siyang Fei
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Meiling Yu
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Yuting Guo
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Haibing He
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Yu Zhang
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Tian Yin
- b Department of Functional Food and Wine , Shenyang Pharmaceutical University , Shenyang , China
| | - Hui Xu
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
| | - Xing Tang
- a Department of Pharmaceutics , School of Pharmacy , Shenyang , China
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93
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Nanaki S, Barmpalexis P, Iatrou A, Christodoulou E, Kostoglou M, Bikiaris DN. Risperidone Controlled Release Microspheres Based on Poly(Lactic Acid)-Poly(Propylene Adipate) Novel Polymer Blends Appropriate for Long Acting Injectable Formulations. Pharmaceutics 2018; 10:E130. [PMID: 30104505 PMCID: PMC6161267 DOI: 10.3390/pharmaceutics10030130] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/08/2018] [Accepted: 08/11/2018] [Indexed: 12/13/2022] Open
Abstract
The present study evaluates the preparation of risperidone controlled release microspheres as appropriate long-acting injectable formulations based on a series of novel biodegradable and biocompatible poly(lactic acid)⁻poly(propylene adipate) (PLA/PPAd) polymer blends. Initially, PPAd was synthesized using a two-stage melt polycondensation method (esterification and polycondensation) and characterized by 1H-NMR, differential scanning calorimetry (DSC), and powder X-ray diffraction (XRD) analyses. DSC and XRD results for PLA/PPAd blends (prepared by the solvent evaporation method) showed that these are immiscible, while enzymatic hydrolysis studies performed at 37 °C showed increased mass loss for PPAd compared to PLA. Risperidone-polyester microparticles prepared by the oil⁻water emulsification/solvent evaporation method showed smooth spherical surface with particle sizes from 1 to 15 μm. DSC, XRD, and Fourier-transformed infrared (FTIR) analyses showed that the active pharmaceutical ingredient (API) was dispersed in the amorphous phase within the polymer matrices, whereas in vitro drug release studies showed risperidone controlled release rates in all PLA/PPAd blend formulations. Finally, statistical moment analysis showed that polyester hydrolysis had a major impact on API release kinetics, while in PLA/PPAd blends with high PLA content, drug release was mainly controlled by diffusion.
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Affiliation(s)
- Stavroula Nanaki
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Panagiotis Barmpalexis
- Department of Pharmaceutical Technology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Alexandros Iatrou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Evi Christodoulou
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Margaritis Kostoglou
- Laboratory of General and Inorganic Chemical Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Dimitrios N Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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94
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Ferguson CTJ, Al-Khalaf AA, Isaac RE, Cayre OJ. pH-responsive polymer microcapsules for targeted delivery of biomaterials to the midgut of Drosophila suzukii. PLoS One 2018; 13:e0201294. [PMID: 30091982 PMCID: PMC6084892 DOI: 10.1371/journal.pone.0201294] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 07/12/2018] [Indexed: 12/13/2022] Open
Abstract
Drosophila suzukii or spotted wing Drosophila is an economically important pest which can have a devastating impact on soft and stone fruit industries. Biological pesticides are being sought as alternatives to synthetic chemicals to control this invasive pest, but many are subject to degradation either in the environment or in the insect gut and as a result require protection. In this study we identified a sharp change in pH of the adult midgut from neutral to acidic (pH <3), which we then exploited to develop poly(2-vinylpyridine) (P2VP) microcapsules that respond to the change in midgut pH by dissolution and release of their cargo for uptake into the insect. First, we used labelled solid poly(methyl methacrylate) (PMMA) particles to show that microcapsules with a diameter less than 15 μm are readily ingested by the adult insect. To encapsulate water-soluble biological species in an aqueous continuous phase, a multiple emulsion template was used as a precursor for the synthesis of pH-responsive P2VP microcapsules with a fluorescent (FITC-dextran) cargo. The water-soluble agent was initially separated from the aqueous continuous phase by an oil barrier, which was subsequently polymerised. The P2VP microcapsules were stable at pH > 6, but underwent rapid dissolution at pH < 4.2. In vivo studies showed that the natural acidity of the midgut of D. suzukii also induced the breakdown of the responsive P2VP microcapsules to release FITC-dextran which was taken up into the body of the insect and accumulated in the renal tubules.
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Affiliation(s)
- Calum T. J. Ferguson
- School of Biological Sciences, University of Leeds, Leeds, United Kingdom
- School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom
| | - Areej A. Al-Khalaf
- College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - R. Elwyn Isaac
- School of Biological Sciences, University of Leeds, Leeds, United Kingdom
| | - Olivier J. Cayre
- School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom
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95
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Hwang I, Kim HN, Seong M, Lee SH, Kang M, Yi H, Bae WG, Kwak MK, Jeong HE. Multifunctional Smart Skin Adhesive Patches for Advanced Health Care. Adv Healthc Mater 2018; 7:e1800275. [PMID: 29757494 DOI: 10.1002/adhm.201800275] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 04/12/2018] [Indexed: 12/21/2022]
Abstract
A skin adhesive patch is the most fundamental and widely used medical device for diverse health-care purposes. Conventional skin adhesive patches have been mainly utilized for routine medical purposes such as wound management, fixation of medical devices, and simple drug release. In contrast to traditional skin adhesive patches, recently developed patches incorporate multiple key functions of bulky medical devices into a thin, flexible patch based on emerging nanomaterials and flexible electronic technologies. Consequently, the meaning of the term "skin adhesive patch" becomes broader and smarter compared to the traditional term. This review summarizes recent efforts undertaken in the development of multifunctional advanced skin adhesive patches, and briefly describes future directions and challenges toward the next generation of smart skin adhesive patches for ubiquitous personalized health care.
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Affiliation(s)
- Insol Hwang
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Hong Nam Kim
- Center for BioMicrosystems; Brain Science Institute; Korea Institute of Science and Technology (KIST); Seoul 136-791 Republic of Korea
| | - Minho Seong
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Sang-Hyeon Lee
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Minsu Kang
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Hoon Yi
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
| | - Won Gyu Bae
- School of Electrical Engineering; Soongsil University (SSU); Seoul 06978 Republic of Korea
| | - Moon Kyu Kwak
- Department of Mechanical Engineering; Kyungpook National University; Daegu 41566 Republic of Korea
| | - Hoon Eui Jeong
- Department of Mechanical Engineering; Ulsan National Institute of Science and Technology (UNIST); Ulsan 44919 Republic of Korea
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96
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Davoodi P, Lee LY, Xu Q, Sunil V, Sun Y, Soh S, Wang CH. Drug delivery systems for programmed and on-demand release. Adv Drug Deliv Rev 2018; 132:104-138. [PMID: 30415656 DOI: 10.1016/j.addr.2018.07.002] [Citation(s) in RCA: 180] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 05/25/2018] [Accepted: 07/02/2018] [Indexed: 01/06/2023]
Abstract
With the advancement in medical science and understanding the importance of biodistribution and pharmacokinetics of therapeutic agents, modern drug delivery research strives to utilize novel materials and fabrication technologies for the preparation of robust drug delivery systems to combat acute and chronic diseases. Compared to traditional drug carriers, which could only control the release of the agents in a monotonic manner, the new drug carriers are able to provide a precise control over the release time and the quantity of drug introduced into the patient's body. To achieve this goal, scientists have introduced "programmed" and "on-demand" approaches. The former provides delivery systems with a sophisticated architecture to precisely tune the release rate for a definite time period, while the latter includes systems directly controlled by an operator/practitioner, perhaps with a remote device triggering/affecting the implanted or injected drug carrier. Ideally, such devices can determine flexible release pattern and intensify the efficacy of a therapy via controlling time, duration, dosage, and location of drug release in a predictable, repeatable, and reliable manner. This review sheds light on the past and current techniques available for fabricating and remotely controlling drug delivery systems and addresses the application of new technologies (e.g. 3D printing) in this field.
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97
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Ouyang H, Zheng AY, Heng PWS, Chan LW. Effect of Lipid Additives and Drug on the Rheological Properties of Molten Paraffin Wax, Degree of Surface Drug Coating, and Drug Release in Spray-Congealed Microparticles. Pharmaceutics 2018; 10:E75. [PMID: 29949920 PMCID: PMC6160941 DOI: 10.3390/pharmaceutics10030075] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 11/17/2022] Open
Abstract
Paraffin wax is potentially useful for producing spray-congealed drug-loaded microparticles with sustained-release and taste-masking properties. To date, there is little information about the effects of blending lipids with paraffin wax on the melt viscosity. In addition, drug particles may not be entirely coated by the paraffin wax matrix. In this study, drug-loaded paraffin wax microparticles were produced by spray-congealing, and the effects of lipid additives on the microparticle production were investigated. The influence of lipid additives (stearic acid, cetyl alcohol, or cetyl esters) and drug (paracetamol) on the rheological properties of paraffin wax were elucidated. Fourier transform-infrared spectroscopy was conducted to investigate the interactions between the blend constituents. Selected formulations were spray-congealed, and the microparticles produced were characterized for their size, drug content, degree of surface drug coating, and drug release. The viscosity of wax-lipid blends was found to be mostly lower than the weighted viscosity when interactions occurred between the blend constituents. Molten paraffin wax exhibited Newtonian flow, which was transformed to plastic flow by paracetamol and pseudoplastic flow by the lipid additive. The viscosity was decreased with lipid added. Compared to plain wax, wax-lipid blends produced smaller spray-congealed microparticles. Drug content remained high. Degree of surface drug coating and drug release were also higher. The lipid additives altered the rheological properties and hydrophobicity of the melt and are useful for modifying the microparticle properties.
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Affiliation(s)
- Hongyi Ouyang
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
| | - Audrey Yi Zheng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
| | - Paul Wan Sia Heng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
| | - Lai Wah Chan
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543, Singapore.
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98
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Naeem H, Sana M, Islam S, Khan M, Riaz F, Zafar Z, Akbar H, Shehzad W, Rashid I. Induction of Th1 type-oriented humoral response through intranasal immunization of mice with SAG1-Toxoplasma gondii polymeric nanospheres. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:1025-1034. [PMID: 29873522 DOI: 10.1080/21691401.2018.1478421] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
About one-third of the world population is prone to have infection with T. gondii, which can cause toxoplasmosis in the developing fetus and in people whose immune system is compromised through disease or chemotherapy. Surface antigen-1 (SAG1) is the candidate of vaccine against toxoplasmosis. Recent advances in biotechnology and nano-pharmaceuticals have made possible to formulate nanospheres of recombinant protein, which are suitable for sub-unit vaccine delivery. In current study, the local strain was obtained from cat feces as toxoplasma oocysts. Amplified 957 bp of SAG1 was cloned into pGEM-T and further sub-cloned into pET28-SAG1. BL21 bacteria were induced at different concentrations of isopropyl β-d-1-thiogalactopyranoside for the expression of rSAG1 protein. An immunoblot was developed for the confirmation of recombinant protein expression at 35 kDa that was actually recognized by anti-HIS antibodies and sera were collected from infected mice. PLGA encapsulated nanospheres of recombinant SAG1 were characterized through scanning electron microscopy. Experimental mice were intraperitoneally immunized with rSAG1 protein and intra-nasally immunized with nanosphere. The immune response was evaluated by indirect ELISA. In results intra-nasally administered rSAG1 in nanospheres appeared to elicit elevated responses of specific IgA and IgG2a than in control. Nanospheres of rSAG1 are found to be a bio-compatible candidate for the development of vaccine against T. gondii.
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Affiliation(s)
- Huma Naeem
- a Department of Parasitology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Madiha Sana
- a Department of Parasitology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Saher Islam
- b Institute of Biochemistry and Biotechnology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Matiullah Khan
- a Department of Parasitology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Farooq Riaz
- a Department of Parasitology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Zunaira Zafar
- b Institute of Biochemistry and Biotechnology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Haroon Akbar
- a Department of Parasitology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Wasim Shehzad
- b Institute of Biochemistry and Biotechnology , University of Veterinary and Animal Sciences , Lahore , Pakistan
| | - Imran Rashid
- a Department of Parasitology , University of Veterinary and Animal Sciences , Lahore , Pakistan
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99
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Gou Y, Miao D, Zhou M, Wang L, Zhou H, Su G. Bio-Inspired Protein-Based Nanoformulations for Cancer Theranostics. Front Pharmacol 2018; 9:421. [PMID: 29755355 PMCID: PMC5934525 DOI: 10.3389/fphar.2018.00421] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 04/11/2018] [Indexed: 01/09/2023] Open
Abstract
Over the past decade, more interests have been aroused in engineering protein-based nanoformulations for cancer treatment. This excitement originates from the success of FDA approved Abraxane (Albumin-based paclitaxel nanoparticles) in 2005. The new generation of biocompatible endogenous protein-based nanoformulations is currently constructed through delivering cancer therapeutic and diagnostic agents simultaneously, as named potential theranostics. Protein nanoformulations are commonly incorporated with dyes, contrast agents, drug payloads or inorganic nanoclusters, serving as imaging-guided combinatorial cancer therapeutics. Employing the nature identity of proteins, the theranostics, escape the clearance by reticuloendothelial cells and have a long blood circulation time. The nanoscale sizet allows them to be penetrated deeply into tumor tissues. In addition, stimuli release and targeted molecules are incorporated to improve the delivery efficiency. The ongoing advancement of protein-based nanoformulations for cancer theranostics in recent 5 years is reviewed in this paper. Fine-designed nanoformulations based on albumin, ferritin, gelatin, and transferrin are highlighted from the literature. Finally, the current challenges are identified in translating protein-based nanoformulations from laboratory to clinical trials.
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Affiliation(s)
- Yi Gou
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
| | - Dandan Miao
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
| | - Min Zhou
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
| | - Lijuan Wang
- Guangzhou Key Laboratory of Environmental Exposure and Health and Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Hongyu Zhou
- Guangzhou Key Laboratory of Environmental Exposure and Health and Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, China
| | - Gaoxing Su
- Jiangsu Province Key Laboratory of Inflammation and Molecular Drug Targets, School of Pharmacy, Nantong University, Nantong, China
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100
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Nishida K, Tamura A, Yui N. pH-Responsive Coacervate Droplets Formed from Acid-Labile Methylated Polyrotaxanes as an Injectable Protein Carrier. Biomacromolecules 2018; 19:2238-2247. [DOI: 10.1021/acs.biomac.8b00301] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Kei Nishida
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
| | - Atsushi Tamura
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
| | - Nobuhiko Yui
- Department of Organic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda, Tokyo 101-0062, Japan
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