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Xu M, Feng G, Fang J. Microcapsules based on biological macromolecules for intestinal health: A review. Int J Biol Macromol 2024; 276:133956. [PMID: 39029830 DOI: 10.1016/j.ijbiomac.2024.133956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 07/04/2024] [Accepted: 07/16/2024] [Indexed: 07/21/2024]
Abstract
Intestinal dysfunction is becoming increasingly associated with neurological and endocrine issues, raising concerns about its impact on world health. With the introduction of several breakthrough technologies for detecting and treating intestinal illnesses, significant progress has been made in the previous few years. On the other hand, traditional intrusive diagnostic techniques are expensive and time-consuming. Furthermore, the efficacy of conventional drugs (not capsules) is reduced since they are more likely to degrade before reaching their target. In this context, microcapsules based on different types of biological macromolecules have been used to encapsulate active drugs and sensors to track intestinal ailments and address these issues. Several biomacromolecules/biomaterials (natural protein, alginate, chitosan, cellulose and RNA etc.) are widely used for make microcapsules for intestinal diseases, and can significantly improve the therapeutic effect and reduce adverse reactions. This article systematically summarizes microencapsulated based on biomacromolecules material for intestinal health control and efficacy enhancement. It also discusses the application and mechanism research of microencapsulated biomacromolecules drugs in reducing intestinal inflammation, in addition to covering the preparation techniques of microencapsulated drug delivery systems used for intestinal health. Microcapsule delivery systems' limits and potential applications for intestinal disease diagnosis, treatment, and surveillance were highlighted.
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Affiliation(s)
- Minhui Xu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha 410128, Hunan, China
| | - Guangfu Feng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha 410128, Hunan, China.
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Hunan Provincial Engineering Research Center of Applied Microbial Resources Development for Livestock and Poultry, Changsha 410128, Hunan, China
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Dong J, Chen Y, Shi L, Shen B, Sun X, Ruan K, Xia X, Feng H, Feng N. Nanoparticles of conformation-stabilized canine distemper virus hemagglutinin are highly immunogenic and induce robust immunity. Virol J 2021; 18:229. [PMID: 34809642 PMCID: PMC8607554 DOI: 10.1186/s12985-021-01702-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/04/2021] [Indexed: 11/13/2022] Open
Abstract
Background Canine distemper virus (CDV) infection of ferrets, dogs, and giant pandas causes an acute systemic disease involving multiple organ systems, including the respiratory tract, lymphoid system, and central nervous system. In this study, we tested a new candidate CDV vaccine-CDV nanoparticles-based on hemagglutinin protein. Methods The nanoparticles were generated from conformation-stabilized CDV hemagglutinin tetramers. Immune responses against CDV were evaluated in mice. Immunization was initiated 6 weeks after birth and boosted two times with 4-week intervals. The blood and mucosal samples were collected 2 weeks after each immunization. Results Vaccination with CDV nanoparticles elicited high levels of IgG antibody titers in mice (approximately sevenfold to eightfold higher than that obtained with soluble CDV H protein) and mucosal immune responses and developed increased CDV-specific neutralizing antibody. The mice that received nanoparticles showed significantly higher IFN-γ- and IL-4-secreting cell population in the spleen and lymph node compared with mice immunized with soluble H protein. The co-stimulatory molecular expression of CD80 and CD86 on the surface of DCs was also upregulated. Conclusion The results demonstrate that self-assembly into nanoparticles can increase the immunogenicity of vaccine antigens, and nanoparticles assembled from conformation-stabilized CDV H protein can serve as a new CDV vaccine.
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Affiliation(s)
- Jingjian Dong
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China
| | - Yan Chen
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China
| | - Lili Shi
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China
| | - Bing Shen
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China
| | - Xianliang Sun
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China
| | - Kaiyi Ruan
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China
| | - Xianzhu Xia
- Military Veterinary Research Institute of Academy of Military Medical Sciences, Changchun, 130122, People's Republic of China
| | - Hao Feng
- Medical School of Jiaxing University, Jiahang Road 118#, Nanhu District, Jiaxing City, Zhejiang Province, 314001, People's Republic of China.
| | - Na Feng
- Military Veterinary Research Institute of Academy of Military Medical Sciences, Changchun, 130122, People's Republic of China.
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Azadirachta indica A. Juss (Meliaceae) microencapsulated bioinsecticide: Spray drying technique optimization, characterization, in vitro release, and degradation kinetics. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2020.11.079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Alkayyali T, Cameron T, Haltli B, Kerr R, Ahmadi A. Microfluidic and cross-linking methods for encapsulation of living cells and bacteria - A review. Anal Chim Acta 2019; 1053:1-21. [DOI: 10.1016/j.aca.2018.12.056] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 12/24/2018] [Accepted: 12/26/2018] [Indexed: 12/14/2022]
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Wang Y, Deng L, Kang SM, Wang BZ. Universal influenza vaccines: from viruses to nanoparticles. Expert Rev Vaccines 2018; 17:967-976. [PMID: 30365905 DOI: 10.1080/14760584.2018.1541408] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
INTRODUCTION The current seasonal influenza vaccine confers only limited protection due to waning antibodies or the antigenic shift and drift of major influenza surface antigens. A universal influenza vaccine which induces broad cross-protection against divergent influenza viruses with a comparable or better efficacy to seasonal influenza vaccines against matched strains will negate the need for an annual update of vaccine strains and protect against possible influenza pandemics. AREAS COVERED In this review, we summarize the recent progress in nanoparticle-based universal influenza vaccine development. We compared the most potent nanoparticle categories, focusing on how they encapsulate conserved influenza epitopes, stimulate the innate and adaptive immune systems, exhibit antigen depot effect, extend the period for antigen-processing and presentation, and exert an intrinsic adjuvant effect on inducing robust immune responses. EXPERT COMMENTARY The development of an effective universal influenza vaccine is an urgent task. Traditional influenza vaccine approaches are not sufficient for preventing recurrent epidemics or occasional pandemics. Nanoparticles are compatible with different immunogens and immune stimulators and can overcome the intrinsically low immunogenicity of conserved influenza virus antigens. We foresee that an affordable universal influenza vaccine will be available within ten years by integrating nanoparticles with other targeted delivery and controlled release technology.
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Affiliation(s)
- Ye Wang
- a Center for Inflammation, Immunity & Infection , Georgia State University Institute for Biomedical Sciences , Atlanta , GA , USA
| | - Lei Deng
- a Center for Inflammation, Immunity & Infection , Georgia State University Institute for Biomedical Sciences , Atlanta , GA , USA
| | - Sang-Moo Kang
- a Center for Inflammation, Immunity & Infection , Georgia State University Institute for Biomedical Sciences , Atlanta , GA , USA
| | - Bao-Zhong Wang
- a Center for Inflammation, Immunity & Infection , Georgia State University Institute for Biomedical Sciences , Atlanta , GA , USA
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Homayun B, Sun C, Kumar A, Montemagno C, Choi HJ. Facile fabrication of microparticles with pH-responsive macropores for small intestine targeted drug formulation. Eur J Pharm Biopharm 2018; 128:316-326. [PMID: 29753774 PMCID: PMC5998383 DOI: 10.1016/j.ejpb.2018.05.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 03/24/2018] [Accepted: 05/10/2018] [Indexed: 12/16/2022]
Abstract
Oral drugs present the most convenient, economical, and painless route for self-administration. Despite commercialization of multiple technologies relying on micro- and nanocrystalline drugs, research on microparticles (MPs) based oral biopharmaceuticals delivery systems has still not culminated well enough in commercial products. This is largely due to the drugs being exposed to the destabilizing environment during MP synthesis process, and partly because of complicated process conditions. Hence, we developed a solvent swelling-evaporation method of producing pH-responsive MPs with micron-sized macropores using poly(methacrylic acid-co-ethyl acrylate) in 1:1 ratio (commercial name: Eudragit® L100-55 polymer). We investigated the effects of temperature and evaporation time on pore formation, freeze-drying induced pore closure, and the release profile of model drugs (fluorescent beads, lactase, and pravastatin sodium) encapsulated MPs in simulated gastrointestinal tract conditions. Encapsulated lactase/pravastatin maintained >60% of their activity due to the preservation of pore closure, which proved the potential of this proof-of-concept microencapsulation system. Importantly, the presence of macropores on MPs can be beneficial for easy drug loading, and solve the problem of bioactivity loss during the conventional MP fabrication-drug encapsulation steps. Therefore, pH-sensing MPs with macropores can contribute to the development of oral drug formulations for a wide variety of drugs and bio-macromolecules, having a various size ranging from genes to micron-sized ingredients with high therapeutic efficacy.
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Affiliation(s)
- Bahman Homayun
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Chengmeng Sun
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Ankit Kumar
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
| | - Carlo Montemagno
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada; Southern Illinois University, 1263 Lincoln Dr, Carbondale, IL 62901, USA.
| | - Hyo-Jick Choi
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada.
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Zhang L, Parison A, He Y. Co-flowing of partially miscible liquids for the generation of monodisperse microparticles. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Herrera Estrada L, Wu H, Ling K, Zhang G, Sumagin R, Parkos CA, Jones RM, Champion JA, Neish AS. Bioengineering Bacterially Derived Immunomodulants: A Therapeutic Approach to Inflammatory Bowel Disease. ACS NANO 2017; 11:9650-9662. [PMID: 28872828 PMCID: PMC7653663 DOI: 10.1021/acsnano.7b03239] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Bacterial enteric pathogens have evolved efficient mechanisms to suppress mammalian inflammatory and immunoregulatory pathways. By exploiting the evolutionary relationship between the gut and pathogenic bacteria, we have developed a potential mucosal therapeutic. Our findings suggest that engineered preparations of the Salmonella acetyltransferase, AvrA, suppress acute inflammatory responses such as those observed in inflammatory bowel disease (IBD). We created 125 nm diameter cross-linked protein nanoparticles directly from AvrA and carrier protein to deliver AvrA in the absence of Salmonella. AvrA nanoparticles are internalized in vitro and in vivo into barrier epithelial and lamina propria monocytic cells. AvrA nanoparticles inhibit inflammatory signaling and confer cytoprotection in vitro, and in murine colitis models, we observe decreased clinical and histological indices of inflammation. Thus, we have combined naturally evolved immunomodulatory proteins with modern bioengineering to produce AvrA nanoparticles, a potential treatment for IBD.
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Affiliation(s)
- Lina Herrera Estrada
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Huixia Wu
- Department of Pathology, Emory University School of Medicine, Whitehead Bldg., 615 Michael Street, Atlanta, Georgia 30322, United States
| | - Kevin Ling
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive NW, Atlanta, Georgia 30332, United States
| | - Guikai Zhang
- Department of Pathology, Emory University School of Medicine, Whitehead Bldg., 615 Michael Street, Atlanta, Georgia 30322, United States
| | - Ronen Sumagin
- Department of Pathology, Emory University School of Medicine, Whitehead Bldg., 615 Michael Street, Atlanta, Georgia 30322, United States
| | - Charles A. Parkos
- Department of Pathology, Emory University School of Medicine, Whitehead Bldg., 615 Michael Street, Atlanta, Georgia 30322, United States
| | - Rheinallt M. Jones
- Department of Pathology, Emory University School of Medicine, Whitehead Bldg., 615 Michael Street, Atlanta, Georgia 30322, United States
| | - Julie A. Champion
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Drive NW, Atlanta, Georgia 30332, United States
- Corresponding Authors: Phone: 404-894-2874. . Phone: 404-727-8545.
| | - Andrew S. Neish
- Department of Pathology, Emory University School of Medicine, Whitehead Bldg., 615 Michael Street, Atlanta, Georgia 30322, United States
- Corresponding Authors: Phone: 404-894-2874. . Phone: 404-727-8545.
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Nami Y, Haghshenas B, Yari Khosroushahi A. Effect of psyllium and gum Arabic biopolymers on the survival rate and storage stability in yogurt of Enterococcus duransIW3 encapsulated in alginate. Food Sci Nutr 2016; 5:554-563. [PMID: 28572941 PMCID: PMC5448373 DOI: 10.1002/fsn3.430] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/27/2016] [Accepted: 09/08/2016] [Indexed: 12/19/2022] Open
Abstract
Different herbal biopolymers were used to encapsulate Enterococcus durans IW3 to enhance its storage stability in yogurt and subsequently its endurance in gastrointestinal condition. Nine formulations of encapsulation were performed using alginate (ALG), ALG-psyllium (PSY), and ALG-gum Arabic (GA) blends. The encapsulation efficiency of all formulations, tolerance of encapsulated E. durans IW3 against low pH/high bile salt concentration, storage lifetime, and release profile of cells in natural condition of yogurt were evaluated. Result revealed 98.6% encapsulation efficiency and 76% survival rate for all formulation compared with the unencapsulated formulation cells (43%). The ALG-PSY and ALG-GA formulations have slightly higher survival rates at low pH and bile salt condition (i.e., 76-93% and 81-95%, respectively) compared with the ALG formulation. All encapsulated E. durans IW3 was released from the prepared beads of ALG after 90 min, whereas both probiotics encapsulated in ALG-GA and ALG-PSY were released after 60 min. Enterococcus durans IW3 was successfully encapsulated in ALG, ALG-GA, and ALG-PSY beads prepared by extrusion method. ALG-GA and ALG-PSY beads are suitable delivery carriers for the oral administration of bioactive compounds like probiotics. The GA and PSY gels exhibited better potential for encapsulation of probiotic bacteria cells because of the amendment of ALG difficulties and utilization of therapeutic and prebiotic potentials of these herbal biopolymers.
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Affiliation(s)
- Yousef Nami
- Department of Food Biotechnology Branch for Northwest & West region Agricultural Biotechnology Research Institute of Iran Agricultural Research Education and Extension Organization (AREEO) Tabriz Islamic Republic of Iran.,Institute of Biosciences University Putra Malaysia Selangor Malaysia
| | - Babak Haghshenas
- Institute of Biosciences University Putra Malaysia Selangor Malaysia
| | - Ahmad Yari Khosroushahi
- Drug Applied Research Center Faculty of Pharmacy Tabriz University of Medical Sciences Tabriz Islamic Republic of Iran.,Department of Pharmacognosy Faculty of Pharmacy Tabriz University of Medical Sciences Tabriz Islamic Republic of Iran
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Zhang Z, Zhang R, Zou L, McClements DJ. Protein encapsulation in alginate hydrogel beads: Effect of pH on microgel stability, protein retention and protein release. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.03.015] [Citation(s) in RCA: 156] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Wang Y, Li G, Chen S, Si R, Fan J. Preparation of monodisperse poly(styrene-co-divinylbenzene) microspheres by vibration dispersion method. KOREAN J CHEM ENG 2016. [DOI: 10.1007/s11814-015-0099-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Pengaruh Berat Molekul Kitosan terhadap Efisiensi Enkapsulasi BSA (Bovine Serum Albumin) Menggunakan Agen Crosslink Asam Sitrat. JURNAL KIMIA SAINS DAN APLIKASI 2015. [DOI: 10.14710/jksa.18.2.62-66] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Telah dilakukan penelitian tentang pengaruh berat molekul kitosan terhadap efisiensi enkapsulasi BSA (Bovine Serum Albumin) menggunakan agen crosslink asam sitrat. Penelitian ini bertujuan untuk menentukan efisiensi enkapsulasi (EE) BSA dengan pengaruh berat molekul kitosan dan crosslink asam sitrat dan menentukan energi interaksi antara kitosan dengan BSA melalui metode ab initio dan docking. Metode yang digunakan pada penelitian ini adalah hidrolisis kitosan dengan HCl, enkapsulasi BSA, dan perhitungan energi interaksi secara ab initio dan docking. Hasil penelitian menunjukkan Efisiensi enkapsulasi (EE) BSA oleh kitosan awal dan kitosan terhidrolisis yaitu 52,06% dan 66,63%. Asam sitrat sebagai agen crosslink juga dapat memperbesar efisiensi enkapsulasi. Efisiensi enkapsulasi kitosan awal dan kitosan awal ditambah asam sitrat yaitu 52,06% dan 52,79%. Hasil perhitungan ab initio menunjukan bahwa terjadi interaksi antara segmen trimer kitosan dengan asam amino asam aspartat pada BSA dengan energi interaksi sebesar -91,3871 kJ mol-1 dengan jarak optimum 1,799 Å, sedangkan docking menghasilkan energi interaksi -18,244 kJmol-1. Interaksi juga dilakukan antara segmen trimer kitosan dengan rantai A BSA menghasilkan energi -5,565 kJmol-1 dan energi antara segmen trimer kitosan dengan rantai B BSA -18,704 kJmol-1.
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Microfluidics-assisted engineering of polymeric microcapsules with high encapsulation efficiency for protein drug delivery. Int J Pharm 2014; 472:82-7. [DOI: 10.1016/j.ijpharm.2014.06.012] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/06/2014] [Accepted: 06/08/2014] [Indexed: 11/19/2022]
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Zhang H, Wang L, Compans RW, Wang BZ. Universal influenza vaccines, a dream to be realized soon. Viruses 2014; 6:1974-91. [PMID: 24784572 PMCID: PMC4036552 DOI: 10.3390/v6051974] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/05/2014] [Accepted: 04/22/2014] [Indexed: 12/21/2022] Open
Abstract
Due to frequent viral antigenic change, current influenza vaccines need to be re-formulated annually to match the circulating strains for battling seasonal influenza epidemics. These vaccines are also ineffective in preventing occasional outbreaks of new influenza pandemic viruses. All these challenges call for the development of universal influenza vaccines capable of conferring broad cross-protection against multiple subtypes of influenza A viruses. Facilitated by the advancement in modern molecular biology, delicate antigen design becomes one of the most effective factors for fulfilling such goals. Conserved epitopes residing in virus surface proteins including influenza matrix protein 2 and the stalk domain of the hemagglutinin draw general interest for improved antigen design. The present review summarizes the recent progress in such endeavors and also covers the encouraging progress in integrated antigen/adjuvant delivery and controlled release technology that facilitate the development of an affordable universal influenza vaccine.
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Affiliation(s)
- Han Zhang
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30322, USA.
| | - Li Wang
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30322, USA.
| | - Richard W Compans
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30322, USA.
| | - Bao-Zhong Wang
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA 30322, USA.
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Rashidzadeh A, Olad A, Salari D, Jalil Hejazi M. On the encapsulation of natural pesticide using polyvinyl alcohol/alginate-montmorillonite nanocomposite for controlled release application. POLYM ENG SCI 2013. [DOI: 10.1002/pen.23823] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Azam Rashidzadeh
- Department of Applied Chemistry, Polymer Composite Research Laboratory, Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Ali Olad
- Department of Applied Chemistry, Polymer Composite Research Laboratory, Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Dariush Salari
- Department of Applied Chemistry; Petroleum Research Laboratory; Faculty of Chemistry; University of Tabriz; Tabriz Iran
| | - Mir Jalil Hejazi
- Department of Plant Protection; Faculty of Agriculture; University of Tabriz; Tabriz Iran
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Zhao YQ, Wang LP, Ma C, Zhao K, Liu Y, Feng NP. Preparation and characterization of tetrandrine-phospholipid complex loaded lipid nanocapsules as potential oral carriers. Int J Nanomedicine 2013; 8:4169-81. [PMID: 24204145 PMCID: PMC3817030 DOI: 10.2147/ijn.s50557] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Background Tetrandrine is an active constituent that is extracted from the root tuber of the Chinese herb Stephania tetrandra S. Moore. It has shown various pharmacological effects, such as antitumor activity, multidrug resistance reversal, and hepatic fibrosis resistance. In clinical applications, it has been used to treat hypertension, pneumosilicosis, and lung cancer. However, the poor water solubility of tetrandrine has limited its application. In this study, a newly emerging oral drug carrier of phospholipid complex loaded lipid nanocapsules was developed to improve the oral bioavailability of tetrandrine. Methods The phospholipid complex was prepared with the solvent-evaporation method to enhance the liposolubility of tetrandrine. The formation of the phospholipid complex was confirmed with a solubility study, infrared spectroscopy, and a differential scanning calorimetry (DSC) analysis. The tetrandrine-phospholipid complex loaded lipid nanocapsules (TPC-LNCs) were prepared using the phase inversion method. Lyophilization was performed with mannitol (10%) as a cryoprotectant. TPC-LNCs were characterized according to their particle size, zeta potential, encapsulation efficiency, morphology by transmission electron microscopy, and crystallinity by DSC. In addition, the in vitro release of tetrandrine from TPC-LNCs was examined to potentially illustrate the in vivo release behavior. The in vivo bioavailability of TPC-LNCs was studied and compared to tetrandrine tablets in rats. Results The liposolubility of tetrandrine in n-octanol improved from 8.34 μg/mL to 35.64 μg/mL in the tetrandrine-phospholipid complex. The prepared TPC-LNCs were spherical-shaped particles with a small size of 40 nm and a high encapsulation efficiency of 93.9%. DSC measurements revealed that the crystalline state was less ordered in lipid nanocapsules. The in vitro release study demonstrated a fast release of approximately 25% in the first 1 hour, which was followed by a sustained release of 70% over 12 hours. The relative bioavailability of TPC-LNCs compared to that of tablets was 208%, indicating a significant improvement in the oral absorption of tetrandrine. Conclusion The TPC-LNCs system developed in this study is a promising carrier that improves the oral bioavailability of tetrandrine in rats. The phospholipid complex loaded lipid nanocapsules have great potential for use as an oral drug delivery system for moderately lipophilic drugs that are encapsulated in the lipid nanocapsules.
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Affiliation(s)
- Yi-qing Zhao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai, People's Republic of China
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Wang L, Hess A, Chang TZ, Wang YC, Champion JA, Compans RW, Wang BZ. Nanoclusters self-assembled from conformation-stabilized influenza M2e as broadly cross-protective influenza vaccines. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2013; 10:473-82. [PMID: 23988715 DOI: 10.1016/j.nano.2013.08.005] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 07/23/2013] [Accepted: 08/14/2013] [Indexed: 01/10/2023]
Abstract
UNLABELLED Influenza vaccines with broad cross-protection are urgently needed. The highly conserved ectodomain of the influenza matrix protein 2 (M2e) can be a promising candidate if its low immunogenicity was overcome. In this study, we generated protein nanoclusters self-assembled from conformation-stabilized M2e tetramers (tM2e) to improve its immunogenicity. The resulting nanoclusters showed an average hydrodynamic diameter of 227 nm. Vaccination with the nanoclusters by an intranasal route elicited high levels of serum antigen-specific IgG in mice (approximately 100-fold higher than that obtained with soluble tM2e), as well as antigen-specific T cell and mucosal antibody responses. The immunity conferred complete protection against lethal challenge with homo- as well as heterosubtypic viruses. These results demonstrate that nanoclusters assembled from conformation-stabilized M2e are promising as a potential universal influenza A vaccine. Self-assembly into nanoclusters represents a novel approach for increasing the immunogenicity of vaccine antigens. FROM THE CLINICAL EDITOR In order to develop more effective influenza vaccination, the highly conserved ectodomain of M2e could be a promising candidate. Unfortunately, it is a weak antigen for vaccination purposes. In this study, self-assembled protein nanoclusters of tM2e were generated and tested. The nanoclusters demonstrated superior vaccination properties, with complete protection against lethal challenge in the studied rodent model, raising hope for the introduction of similar vaccines to challenge human influenza outbreaks.
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Affiliation(s)
- Li Wang
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Annie Hess
- Georgia Institute of Technology, School of Chemical and Biomolecular Engineering, Atlanta, GA, USA
| | - Timothy Z Chang
- Georgia Institute of Technology, School of Chemical and Biomolecular Engineering, Atlanta, GA, USA
| | - Ying-Chun Wang
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA
| | - Julie A Champion
- Georgia Institute of Technology, School of Chemical and Biomolecular Engineering, Atlanta, GA, USA.
| | - Richard W Compans
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA.
| | - Bao-Zhong Wang
- Department of Microbiology and Immunology, and Emory Vaccine Center, Emory University School of Medicine, Atlanta, GA, USA.
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Singh S, Singh AN, Verma A, Dubey VK. Biodegradable Polycaprolactone (PCL) Nanosphere Encapsulating Superoxide Dismutase and Catalase Enzymes. Appl Biochem Biotechnol 2013; 171:1545-58. [DOI: 10.1007/s12010-013-0427-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 08/05/2013] [Indexed: 11/30/2022]
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Burgain J, Gaiani C, Cailliez-Grimal C, Jeandel C, Scher J. Encapsulation of Lactobacillus rhamnosus GG in microparticles: Influence of casein to whey protein ratio on bacterial survival during digestion. INNOV FOOD SCI EMERG 2013. [DOI: 10.1016/j.ifset.2013.04.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Hu SH, Liao BJ, Chiang CS, Chen PJ, Chen IW, Chen SY. Core-shell nanocapsules stabilized by single-component polymer and nanoparticles for magneto-chemotherapy/hyperthermia with multiple drugs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2012; 24:3627-32. [PMID: 22689346 DOI: 10.1002/adma.201201251] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 04/20/2012] [Indexed: 05/17/2023]
Abstract
Iron-oxide-containing double emulsion capsules carrying both hydrophilic and hydrophobic therapeutic molecules can deliver drugs and energy on demand in vivo. Magneto-chemotherapy/hyperthermia involves a burst-like release of hydrophilic doxorubicin and hydrophobic paclitaxel, remotely triggered by a high frequency magnetic field, which also releases energy via internalized iron oxide nanoparticles, all contributing to cell kill.
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Affiliation(s)
- Shang-Hsiu Hu
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan
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Bajerová M, Krejčová K, Rabišková M, Muselík J, Dvořáčková K, Gajdziok J, Masteiková R. Oxycellulose beads with drug exhibiting pH-dependent solubility. AAPS PharmSciTech 2011; 12:1348-57. [PMID: 22005954 DOI: 10.1208/s12249-011-9696-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Accepted: 09/12/2011] [Indexed: 02/04/2023] Open
Abstract
The aim of this study was to develop novel hydrogel-based beads and characterize their potential to deliver and release a drug exhibiting pH-dependent solubility into distal parts of gastrointestinal (GI) tract. Oxycellulose beads containing diclofenac sodium as a model drug were prepared by the ionotropic external gelation technique using calcium chloride solution as the cross-linking medium. Resulting beads were characterized in terms of particle shape and size, encapsulation efficacy, swelling ability and in vitro drug release. Also, potential drug-polymer interactions were evaluated using Fourier transform infrared spectroscopy. The particle size was found to be 0.92-0.96 mm for inactive (oxycellulose only) and 1.47-1.60 mm for active (oxycellulose-diclofenac sodium) beads, respectively. In all cases, the sphericity factor was between 0.70 and 0.81 with higher values observed for samples containing higher polymer and drug concentrations. The swelling of inactive beads was found to be strongly influenced by the pH and composition (i.e. Na(+) concentration) of the selected media (simulated gastric fluid vs. phosphate buffer pH 6.8). The encapsulation efficiency of the prepared particles ranged from 58% to 65%. Results of dissolution tests showed that the drug loading inside of the particles influenced the rate of its release. In general, prepared particles were able to release the drug within 12-16 h after a lag time of 4 h. Fickian diffusion was found as the predominant drug release mechanism. Thus, this novel particulate system showed a good potential to deliver drugs specifically to the distal parts of the human GI tract.
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