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Liao C, He D, Yin K, Lin Y, Chen Y, Zhang Z, Zhang J, Luo H, Chen X, Li Y. Effect of the Sr-Fe layered double hydroxide coating based on the microenvironment response on implant osseointegration in osteoporotic rats. J Mater Chem B 2024; 12:1592-1603. [PMID: 38265091 DOI: 10.1039/d3tb02410e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Osteoporosis is a disease that manifests itself as an abnormality of bone metabolism and is characterized by low bone mass and destruction of the bone microstructure. Since bone resorption occurs more rapidly than new bone formation, osteoporosis leads to reduced orthopedic implant stability. From a microenvironmental point of view, the rationale for this outcome is that osteoclasts are overactive in the bone tissue of patients with osteoporosis, and the large amount of H+ they produce leads to local chronic acidosis, which promotes bone mineral loss. Therefore, we designed a weakly alkaline layered double hydroxide (LDH) coating to modulate the pathologically acidic microenvironment and the osteogenic-osteoclastic coupling by releasing Sr2+. We prepared Sr-Fe LDH coatings on pure titanium implants using a hydrothermal method in this study and characterized the material using SEM, AFM, XRD, XPS, EDS, ICP, pH acidimeter, etc. We found that the coatings had good nanomorphology and were able to efficiently neutralize H+ as well as steadily release Sr2+ for up to 21 days. In vitro, the coating not only significantly promoted the adhesion, proliferation, and differentiation of osteoblasts, but also inhibited the differentiation of osteoclasts at the same time. In addition, in animal experiments, the coating significantly improved the mechanical stability of the implant in osteoporotic rats, increasing Sr-Fe LDH@Ti maximal push-out force by 72.2% compared to Ti. At the same time, the coating was effective in reversing the osteoporotic state, resulting in a 58.5% increase in BV/TV (%), and a 12.4% increase in Tb. N (1 mm-1), a 31.6% increase in Tb. Th (μm), and a 30.9% increase in BA (%). Our results suggest that this Sr-Fe LDH nanocoating material with acid-neutralizing, as well as long-term Sr2+-releasing capabilities, is a novel and effective orthopedic implant coating material under osteoporotic conditions.
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Affiliation(s)
- Chenyu Liao
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Oral & Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Dongcai He
- College of Materials Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Kaiwen Yin
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Oral & Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Yuhung Lin
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Oral & Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
| | - Yihan Chen
- Shanghai Institute of Ceramics, Chinese Academy of Science, Research Unit of Nanocatalytic Medicine iSpecific Therapy for Serious Disease, Chinese Academy of Medical Sciences, Shanghai 200050, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Ziqiang Zhang
- College of Materials Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Jing Zhang
- College of Architecture and Environment, Sichuan University, Chengdu, Sichuan 610065, China
| | - Hongrong Luo
- College of Biomedical Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China
| | - Xianchun Chen
- College of Polymer Science and Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, 610065, China.
| | - Yunfeng Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Oral & Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
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Chacin Ruiz EA, Swindle-Reilly KE, Ford Versypt AN. Experimental and mathematical approaches for drug delivery for the treatment of wet age-related macular degeneration. J Control Release 2023; 363:464-483. [PMID: 37774953 PMCID: PMC10842193 DOI: 10.1016/j.jconrel.2023.09.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 09/11/2023] [Accepted: 09/13/2023] [Indexed: 10/01/2023]
Abstract
Several chronic eye diseases affect the posterior segment of the eye. Among them age-related macular degeneration can cause vision loss if left untreated and is one of the leading causes of visual impairment in the world. Most treatments are based on intravitreally injected therapeutics that inhibit the action of vascular endothelial growth factor. However, due to the need for monthly injections, this method is associated with poor patient compliance. To address this problem, numerous drug delivery systems (DDSs) have been developed. This review covers a selection of particulate systems, non-stimuli responsive hydrogels, implants, and composite systems that have been developed in the last few decades. Depending on the type of DDS, polymer material, and preparation method, different mechanical properties and drug release profiles can be achieved. Furthermore, DDS development can be optimized by implementing mathematical modeling of both drug release and pharmacokinetic aspects. Several existing mathematical models for diffusion-controlled, swelling-controlled, and erosion-controlled drug delivery from polymeric systems are summarized. Compartmental and physiologically based models for ocular drug transport and pharmacokinetics that have studied drug concentration profiles after intravitreal delivery or release from a DDS are also reviewed. The coupling of drug release models with ocular pharmacokinetic models can lead to obtaining much more efficient DDSs for the treatment of age-related macular degeneration and other diseases of the posterior segment of the eye.
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Affiliation(s)
- Eduardo A Chacin Ruiz
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Katelyn E Swindle-Reilly
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA; Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA; Department of Ophthalmology and Visual Sciences, The Ohio State University, Columbus, OH, USA
| | - Ashlee N Ford Versypt
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA; Department of Biomedical Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA; Institute for Artificial Intelligence and Data Science, University at Buffalo, The State University of New York, Buffalo, NY, USA.
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Boddu SH, Acharya D, Hala V, Jani H, Pande S, Patel C, Shahwan M, Jwala R, Ranch KM. An Update on Strategies to Deliver Protein and Peptide Drugs to the Eye. ACS OMEGA 2023; 8:35470-35498. [PMID: 37810716 PMCID: PMC10552503 DOI: 10.1021/acsomega.3c02897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 09/08/2023] [Indexed: 10/10/2023]
Abstract
In the past few decades, advancements in protein engineering, biotechnology, and structural biochemistry have resulted in the discovery of various techniques that enhanced the production yield of proteins, targetability, circulating half-life, product purity, and functionality of proteins and peptides. As a result, the utilization of proteins and peptides has increased in the treatment of many conditions, including ocular diseases. Ocular delivery of large molecules poses several challenges due to their high molecular weight, hydrophilicity, unstable nature, and poor permeation through cellular and enzymatic barriers. The use of novel strategies for delivering protein and peptides such as glycoengineering, PEGylation, Fc-fusion, chitosan nanoparticles, and liposomes have improved the efficacy, safety, and stability, which consequently expanded the therapeutic potential of proteins. This review article highlights various proteins and peptides that are useful in ocular disorders, challenges in their delivery to the eye, and strategies to enhance ocular bioavailability using novel delivery approaches. In addition, a few futuristic approaches that will assist in the ocular delivery of proteins and peptides were also discussed.
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Affiliation(s)
- Sai H.
S. Boddu
- College
of Pharmacy and Health Sciences, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center
of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Devarshi Acharya
- Department
of Pharmaceutics, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
| | - Vivek Hala
- Department
of Pharmaceutics, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
| | - Harshil Jani
- Department
of Pharmaceutics, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
- Gujarat
Technological University, Ahmedabad, Gujarat 382424, India
| | - Sonal Pande
- Gujarat
Technological University, Ahmedabad, Gujarat 382424, India
- Department
of Pharmacology, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
| | - Chirag Patel
- Department
of Pharmacology, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
| | - Moyad Shahwan
- College
of Pharmacy and Health Sciences, Ajman University, Ajman P.O. Box 346, United Arab Emirates
- Center
of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman P.O. Box 346, United Arab Emirates
| | - Renukuntla Jwala
- School
of
Pharmacy, The University of Texas at El
Paso, 1101 N Campbell
St., El Paso, Texas 79902, United States
- Department
of Basic Pharmaceutical Sciences, Fred Wilson School of Pharmacy, High Point University, High Point, North Carolina, 27240, United States
| | - Ketan M. Ranch
- Department
of Pharmaceutics, L. M. College of Pharmacy, Ahmedabad, Gujarat 380009, India
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Patil S, Vijayanand S, Menon I, Gomes KB, Kale A, Bagwe P, Yacoub S, Uddin MN, D’Souza MJ. Adjuvanted-SARS-CoV-2 Spike Protein-Based Microparticulate Vaccine Delivered by Dissolving Microneedles Induces Humoral, Mucosal, and Cellular Immune Responses in Mice. Pharmaceuticals (Basel) 2023; 16:1131. [PMID: 37631046 PMCID: PMC10457992 DOI: 10.3390/ph16081131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Revised: 07/16/2023] [Accepted: 07/19/2023] [Indexed: 08/27/2023] Open
Abstract
COVID-19 continues to cause an increase in the number of cases and deaths worldwide. Due to the ever-mutating nature of the virus, frequent vaccination against COVID-19 is anticipated. Most of the approved SARS-CoV-2 vaccines are administered using the conventional intramuscular route, causing vaccine hesitancy. Thus, there is a need for an effective, non-invasive vaccination strategy against COVID-19. This study evaluated the synergistic effects of a subunit microparticulate vaccine delivered using microneedles. The microparticles encapsulated a highly immunogenic subunit protein of the SARS-CoV-2 virus, such as the spike protein's receptor binding domain (RBD). Adjuvants were also incorporated to enhance the spike RBD-specific immune response. Our vaccination study reveals that a microneedle-based vaccine delivering these microparticles induced spike RBD-specific IgM, IgG, IgG1, IgG2a, and IgA antibodies. The vaccine also generated high levels of CD4+ and CD8a+ molecules in the secondary lymphoid organs. Overall, dissolving microneedles delivery spike RBD antigen in microparticulate form induced a robust immune response, paving the way for an alternative self-administrable, non-invasive vaccination strategy against COVID-19.
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Affiliation(s)
| | | | | | | | | | | | | | - Mohammad N. Uddin
- Center for Drug Delivery and Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA; (S.P.); (S.V.); (I.M.); (K.B.G.); (A.K.); (P.B.); (S.Y.)
| | - Martin J. D’Souza
- Center for Drug Delivery and Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA; (S.P.); (S.V.); (I.M.); (K.B.G.); (A.K.); (P.B.); (S.Y.)
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Patil S, Vijayanand S, Joshi D, Menon I, Braz Gomes K, Kale A, Bagwe P, Yacoub S, Uddin MN, D'Souza MJ. Subunit microparticulate vaccine delivery using microneedles trigger significant SARS-spike-specific humoral and cellular responses in a preclinical murine model. Int J Pharm 2023; 632:122583. [PMID: 36610521 PMCID: PMC9811858 DOI: 10.1016/j.ijpharm.2023.122583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 12/29/2022] [Accepted: 01/02/2023] [Indexed: 01/06/2023]
Abstract
The objective of this "proof-of-concept" study was to evaluate the synergistic effect of a subunit microparticulate vaccine and microneedles (MN) assisted vaccine delivery system against a human coronavirus. Here, we formulated PLGA polymeric microparticles (MPs) encapsulating spike glycoprotein (GP) of SARS-CoV as the model antigen. Similarly, we formulated adjuvant MPs encapsulating Alhydrogel® and AddaVax™. The antigen/adjuvant MPs were characterized and tested in vitro for immunogenicity. We found that the antigen/adjuvant MPs were non-cytotoxic in vitro. The spike GP MPs + Alhydrogel® MPs + AddaVax™ MPs showed enhanced immunogenicity in vitro as confirmed through the release of nitrite, autophagy, and antigen presenting molecules with their co-stimulatory molecules. Next, we tested the in vivo efficacy of the spike GP MP vaccine with and without adjuvant MPs in mice vaccinated using MN. The spike GP MPs + Alhydrogel® MPs + AddaVax™ MPs induced heightened spike GP-specific IgG, IgG1 and IgG2a antibodies in mice. Also, spike GP MPs + Alhydrogel® MPs + AddaVax™ MPs enhanced expression of CD4+ and CD8+ T cells in secondary lymphoid organ like spleen. These results indicated spike GP-specific humoral immunity and cellular immunity in vivo. Thus, we employed the benefits of both the subunit vaccine MPs and dissolving MN to form a non-invasive and effective vaccination strategy against human coronaviruses.
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Affiliation(s)
- Smital Patil
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Sharon Vijayanand
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Devyani Joshi
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Ipshita Menon
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Keegan Braz Gomes
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Akanksha Kale
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Priyal Bagwe
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Shadi Yacoub
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Mohammad N Uddin
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA
| | - Martin J D'Souza
- Center for Drug Delivery Research, Vaccine Nanotechnology Laboratory, College of Pharmacy, Mercer University, Atlanta, GA 30341, USA.
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Ouyang H, Ang SJ, Lee ZY, Hiew TN, Heng PWS, Chan LW. Effect of drug load and lipid-wax blends on drug release and stability from spray-congealed microparticles. Pharm Dev Technol 2022; 27:1069-1082. [PMID: 36422997 DOI: 10.1080/10837450.2022.2152048] [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: 11/27/2022]
Abstract
This study was designed to evaluate paraffin wax as a potential controlled release matrix for spray congealing and its impact on drug release and stability of the microparticles. Paraffin wax can form a hydrophobic barrier to moisture and reduce drug degradation besides retarding drug release in the gastrointestinal tract. More hydrophilic lipid-based additives can be incorporated to modulate the drug release through the paraffin wax barrier. This study reports the findings of lipid-wax formulations at preserving the stability of moisture-sensitive drugs in spray-congealed microparticles. Aspirin-loaded microparticles formulated with different drug loads, lipid additives, and lipid:wax ratios were produced by spray congealing. Stearic acid (SA), cetyl alcohol (CA), and cetyl ester (CE) were the lipid additives studied. The microparticles were evaluated for yield, encapsulation efficiency, particle size, drug stability, and release. CE exhibited the greatest effect on increasing drug release, followed by CA and SA. Dissolution profiles showed the best fit to Weibull kinetic model. The degree of drug degradation was low, with CA imparting the least protective effect, followed by SA and CE. Paraffin wax is useful for preserving the stability of moisture-sensitive aspirin and retarding its release from spray-congealed microparticles. The addition of lipid additives modulated drug release without compromising drug stability.
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Affiliation(s)
- Hongyi Ouyang
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Soon Jun Ang
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Zong Yang Lee
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Tze Ning Hiew
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Paul Wan Sia Heng
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
| | - Lai Wah Chan
- GEA-NUS Pharmaceutical Processing Research Laboratory, Department of Pharmacy, National University of Singapore, Singapore, Singapore
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Non-Viral Delivery of CRISPR/Cas Cargo to the Retina Using Nanoparticles: Current Possibilities, Challenges, and Limitations. Pharmaceutics 2022; 14:pharmaceutics14091842. [PMID: 36145593 PMCID: PMC9503525 DOI: 10.3390/pharmaceutics14091842] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 12/13/2022] Open
Abstract
The discovery of the CRISPR/Cas system and its development into a powerful genome engineering tool have revolutionized the field of molecular biology and generated excitement for its potential to treat a wide range of human diseases. As a gene therapy target, the retina offers many advantages over other tissues because of its surgical accessibility and relative immunity privilege due to its blood–retinal barrier. These features explain the large advances made in ocular gene therapy over the past decade, including the first in vivo clinical trial using CRISPR gene-editing reagents. Although viral vector-mediated therapeutic approaches have been successful, they have several shortcomings, including packaging constraints, pre-existing anti-capsid immunity and vector-induced immunogenicity, therapeutic potency and persistence, and potential genotoxicity. The use of nanomaterials in the delivery of therapeutic agents has revolutionized the way genetic materials are delivered to cells, tissues, and organs, and presents an appealing alternative to bypass the limitations of viral delivery systems. In this review, we explore the potential use of non-viral vectors as tools for gene therapy, exploring the latest advancements in nanotechnology in medicine and focusing on the nanoparticle-mediated delivery of CRIPSR genetic cargo to the retina.
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Rudeen KM, Liu W, Mieler WF, Kang-Mieler JJ. Simultaneous Release of Aflibercept and Dexamethasone from an Ocular Drug Delivery System. Curr Eye Res 2022; 47:1034-1042. [PMID: 35343355 PMCID: PMC9906966 DOI: 10.1080/02713683.2022.2053166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
PURPOSE Intravitreal injections of anti-vascular endothelial growth factors (anti-VEGF) are the current standard of care for patients with choroidal neovascularization (CNV) secondary to age-related macular degeneration (AMD). There is a growing subset of patients that does not respond to anti-VEGF monotherapy treatment. Some patients, however, do respond to combination therapy of corticosteroids and anti-VEGF. This treatment requires monthly/bimonthly injections of anti-VEGF and semi-annual injections of corticosteroid. A drug delivery system (DDS) that simultaneously releases multiple drugs could benefit these patients by reducing the number of injections. The purpose of this study was to characterize the simultaneous release of aflibercept and dexamethasone from a biodegradable microparticle- and nanoparticle-hydrogel DDS. METHODS Dexamethasone-loaded nanoparticles and aflibercept-loaded microparticles were created using modified single- and double-emulsion techniques, respectively. Then, microparticles and nanoparticles were embedded into a thermoresponsive, biodegradable poly(ethylene glycol)-co-(L-lactic acid) diacrylate (PEG-PLLA-DA)-N-isopropylacrylamide (NIPAAm) hydrogel DDS. Drug release studies and characterization of DDS were conducted with varying doses of microparticles and nanoparticles. RESULTS The combination aflibercept-loaded microparticle- and dexamethasone-loaded nanoparticle- hydrogel (Combo-DDS) achieved a total release time of 224 days. Small decreases were seen in swelling ratio and equilibrium water content for Combo-DDS compared to monotherapy aflibercept-loaded microparticle-hydrogel DDS (AFL-DDS) and monotherapy dexamethasone-loaded nanoparticle-hydrogel DDS (DEX-DDS). Bioactivity of aflibercept was maintained in Combo-DDS compared to AFL-DDS. CONCLUSIONS The Combo-DDS was able to extend and control the release of both aflibercept and dexamethasone simultaneously from a single DDS. This may eliminate the need for separate dosing regiments of anti-VEGF and corticosteroids for wet AMD patients.
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Affiliation(s)
- Kayla M. Rudeen
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, USA
| | - Wenqiang Liu
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, USA
| | - William F. Mieler
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, USA
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Alshaikh RA, Waeber C, Ryan KB. Polymer based sustained drug delivery to the ocular posterior segment: barriers and future opportunities for the treatment of neovascular pathologies. Adv Drug Deliv Rev 2022; 187:114342. [PMID: 35569559 DOI: 10.1016/j.addr.2022.114342] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/28/2022] [Accepted: 05/09/2022] [Indexed: 12/12/2022]
Abstract
There is an increasing momentum in research and pharmaceutical industry communities to design sustained, non-invasive delivery systems to treat chronic neovascular ocular diseases that affect the posterior segment of the eye including age-related macular degeneration and diabetic retinopathy. Current treatments include VEGF blockers, which have revolutionized the standard of care for patients, but their maximum therapeutic benefit is hampered by the need for recurrent and invasive administration procedures. Currently approved delivery systems intended to address these limitations exploit polymer technology to regulate drug release in a sustained manner. Here, we critically review sustained drug delivery approaches for the treatment of chronic neovascular diseases affecting the ocular posterior segment, with a special emphasis on novel and polymeric technologies spanning the spectrum of preclinical and clinical investigation, and those approved for treatment. The mechanism by which each formulation imparts sustained release, the impact of formulation characteristics on release and foreign body reaction, and special considerations related to the translation of these systems are discussed.
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Affiliation(s)
| | - Christian Waeber
- School of Pharmacy, University College Cork, Cork, Ireland; Department of Pharmacology and Therapeutics, University College Cork, Cork, Ireland
| | - Katie B Ryan
- School of Pharmacy, University College Cork, Cork, Ireland; SSPC The SFI Research Centre for Pharmaceuticals, School of Pharmacy, University College Cork, Ireland.
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Nigam K, Kaur A, Tyagi A, Manda K, Goswami N, Nematullah M, Khan F, Gabrani R, Gauba P, Dang S. In vitro & In vivo evaluations of PLGA nanoparticle based combinatorial drug therapy for Baclofen and Lamotrigine for neuropathic pain management. J Microencapsul 2022; 39:95-109. [PMID: 35147068 DOI: 10.1080/02652048.2022.2041751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
AIM Baclofen and Lamotrigine via PLGA nanoparticles were developed for nose-to-brain delivery for treatment of Neuropathic pain. METHODS Nanoparticles were prepared using modified nano-precipitation method. The prepared NPs were characterized and further in vitro and in vivo studies were performed. RESULTS The Bcf-Ltg-PLGA-NPs were ∼177.7nm with >75%(w/w) drugs encapsulated. In vitro dissolution studies suggested zero-order release profiles following Korsmeyer-Peppas model. In vitro cytotoxicity and staining studies on mammalian cells showed dose dependant cytotoxicity where nanoparticles were significantly less toxic(>95% cell-viability). ELISA studies on RAW-macrophages showed Bcf-Ltg-PLGA-NPs as potential pro-inflammatory-cytokines inhibitor. In vivo gamma-scintigraphy studies on rats showed intra-nasal administration of 99mTc-Bcf-Ltg-PLGA-NPs showed Cmax 3.6%/g at Tmax=1.5h with DTE% as 191.23% and DTP% = 38.61% in brain. Pharmacodynamics evaluations on C57BL/6J mice showed significant reduction in licks/bites during inflammation induced phase II pain. CONCLUSION The findings concluded that combination of these drugs into single nanoparticle-based formulation has potential for pain management.
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Affiliation(s)
- Kuldeep Nigam
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, NOIDA, India, 201309
| | - Atinderpal Kaur
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, NOIDA, India, 201309
| | - Amit Tyagi
- Institute of Nuclear medicine and Allied Sciences, Defence Research and Development Organisation, Timarpur, Delhi, India, 110054
| | - Kailash Manda
- Institute of Nuclear medicine and Allied Sciences, Defence Research and Development Organisation, Timarpur, Delhi, India, 110054
| | - Nidhi Goswami
- Institute of Nuclear medicine and Allied Sciences, Defence Research and Development Organisation, Timarpur, Delhi, India, 110054
| | - Md Nematullah
- Department of Biochemistry, Faculty of Science, Jamia Hamdard, New Delhi, India, 110062
| | - Farah Khan
- Department of Biochemistry, Faculty of Science, Jamia Hamdard, New Delhi, India, 110062
| | - Reema Gabrani
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, NOIDA, India, 201309
| | - Pammi Gauba
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, NOIDA, India, 201309
| | - Shweta Dang
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, NOIDA, India, 201309
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11
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Abdel-Moneim A, Ramadan H. Novel strategies to oral delivery of insulin: Current progress of nanocarriers for diabetes management. Drug Dev Res 2021; 83:301-316. [PMID: 34859477 DOI: 10.1002/ddr.21903] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 10/30/2021] [Accepted: 11/25/2021] [Indexed: 12/17/2022]
Abstract
Diabetes mellitus is one of the most serious public health problems in the world. Repeated daily injections of subcutaneous insulin is the standard treatment for patients with type 1 diabetes mellitus; however, subcutaneous insulin injections can potentially cause local discomfort, patient noncompliance, hypoglycemia, failure to regulate glucose homeostasis, infections, and fat deposits at the injection sites. In recent years, numerous attempts have been made to produce safe and efficient nanoparticles for oral insulin delivery. Oral administration is considered the most effective alternative route to insulin injection, but it is accompanied by several challenges related to enzymatic proteolysis, digestive breakdown, and absorption barriers. A number of natural and synthetic polymeric, lipid-based, and inorganic nanoparticles have been investigated for use. Although improvements have recently been made in potential oral insulin delivery systems, these require further investigation before clinical trials are conducted. In this review, new approaches to oral insulin delivery for diabetes treatment are discussed, including polymeric, lipid-based, and inorganic nanoparticles, as well as the clinical trials performed for this purpose.
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Affiliation(s)
- Adel Abdel-Moneim
- Molecular Physiology Division, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Hanaa Ramadan
- Histology and Molecular Cytology Division, Zoology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
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Matuszewska K, Ten Kortenaar S, Pereira M, Santry LA, Petrik D, Lo KM, Bridle BW, Wootton SK, Lawler J, Petrik J. Addition of an Fc-IgG induces receptor clustering and increases the in vitro efficacy and in vivo anti-tumor properties of the thrombospondin-1 type I repeats (3TSR) in a mouse model of advanced stage ovarian cancer. Gynecol Oncol 2021; 164:154-169. [PMID: 34799137 DOI: 10.1016/j.ygyno.2021.11.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 11/04/2021] [Accepted: 11/08/2021] [Indexed: 12/27/2022]
Abstract
OBJECTIVES Tumor vasculature is structurally abnormal, with anatomical deformities, reduced pericyte coverage and low tissue perfusion. As a result of this vascular dysfunction, tumors are often hypoxic, which is associated with an aggressive tumor phenotype, and reduced delivery of therapeutic compounds to the tumor. We have previously shown that a peptide containing the thrombospondin-1 type I repeats (3TSR) specifically targets tumor vessels and induces vascular normalization in a mouse model of epithelial ovarian cancer (EOC). However, due to its small size, 3TSR is rapidly cleared from circulation. We now introduce a novel construct with the 3TSR peptide fused to the C-terminus of each of the two heavy chains of the Fc region of human IgG1 (Fc3TSR). We hypothesize that Fc3TSR will have greater anti-tumor activity in vitro and in vivo compared to the native compound. METHODS Fc3TSR was evaluated in vitro using proliferation and apoptosis assays to investigate differences in efficacy compared to native 3TSR. In light of the multivalency of Fc3TSR, we also investigate whether it induces greater clustering of its functional receptor, CD36. We also compare the compounds in vivo using an orthotopic, syngeneic mouse model of advanced stage EOC. The impact of the two compounds on changes to tumor vasculature morphology was also investigated. RESULTS Fc3TSR significantly decreased the viability and proliferative potential of EOC cells and endothelial cells in vitro compared to native 3TSR. High-resolution imaging followed by image correlation spectroscopy demonstrated enhanced clustering of the CD36 receptor in cells treated with Fc3TSR. This was associated with enhanced downstream signaling and greater in vitro and in vivo cellular responses. Fc3TSR induced greater vascular normalization and disease regression compared to native 3TSR in an orthotopic, syngeneic mouse model of advanced stage ovarian cancer. CONCLUSION The development of Fc3TSR which is greater in size, stable in circulation and enhances receptor activation compared to 3TSR, facilitates its translational potential as a therapy in the treatment of metastatic advanced stage ovarian cancer.
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Affiliation(s)
- Kathy Matuszewska
- Department of Biomedical Sciences, University of Guelph, Guelph, ON, United States of America
| | - Simone Ten Kortenaar
- Department of Biomedical Sciences, University of Guelph, Guelph, ON, United States of America
| | - Madison Pereira
- Department of Biomedical Sciences, University of Guelph, Guelph, ON, United States of America
| | - Lisa A Santry
- Department of Pathobiology, University of Guelph, Guelph, ON, United States of America
| | - Duncan Petrik
- Department of Biomedical Sciences, University of Guelph, Guelph, ON, United States of America
| | - Kin-Ming Lo
- EMD Serono Research & Development Institute, Billerica, MA, United States of America
| | - Byram W Bridle
- Department of Pathobiology, University of Guelph, Guelph, ON, United States of America
| | - Sarah K Wootton
- Department of Pathobiology, University of Guelph, Guelph, ON, United States of America
| | - Jack Lawler
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States of America
| | - Jim Petrik
- Department of Biomedical Sciences, University of Guelph, Guelph, ON, United States of America.
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Mukhtar M, Fényes E, Bartos C, Zeeshan M, Ambrus R. Chitosan biopolymer, its derivatives and potential applications in nano-therapeutics: A comprehensive review. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110767] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Kim Y, Park EJ, Kim TW, Na DH. Recent Progress in Drug Release Testing Methods of Biopolymeric Particulate System. Pharmaceutics 2021; 13:pharmaceutics13081313. [PMID: 34452274 PMCID: PMC8399039 DOI: 10.3390/pharmaceutics13081313] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/16/2021] [Accepted: 08/16/2021] [Indexed: 12/18/2022] Open
Abstract
Biopolymeric microparticles have been widely used for long-term release formulations of short half-life chemicals or synthetic peptides. Characterization of the drug release from microparticles is important to ensure product quality and desired pharmacological effect. However, there is no official method for long-term release parenteral dosage forms. Much work has been done to develop methods for in vitro drug release testing, generally grouped into three major categories: sample and separate, dialysis membrane, and continuous flow (flow-through cell) methods. In vitro drug release testing also plays an important role in providing insight into the in vivo performance of a product. In vitro release test with in vivo relevance can reduce the cost of conducting in vivo studies and accelerate drug product development. Therefore, investigation of the in vitro–in vivo correlation (IVIVC) is increasingly becoming an essential part of particulate formulation development. This review summarizes the principles of the in vitro release testing methods of biopolymeric particulate system with the recent research articles and discusses their characteristics including IVIVC, accelerated release testing methods, and stability of encapsulated drugs.
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Affiliation(s)
- Yejin Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (Y.K.); (T.W.K.)
- G2GBIO, Inc., Daejeon 34054, Korea
| | | | - Tae Wan Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (Y.K.); (T.W.K.)
| | - Dong Hee Na
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea; (Y.K.); (T.W.K.)
- Correspondence: ; Tel.: +82-2-820-5677
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15
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Practical quality attributes of polymeric microparticles with current understanding and future perspectives. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102608] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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16
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Favaro-Trindade CS, de Matos Junior FE, Okuro PK, Dias-Ferreira J, Cano A, Severino P, Zielińska A, Souto EB. Encapsulation of Active Pharmaceutical Ingredients in Lipid Micro/Nanoparticles for Oral Administration by Spray-Cooling. Pharmaceutics 2021; 13:1186. [PMID: 34452147 PMCID: PMC8399666 DOI: 10.3390/pharmaceutics13081186] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/28/2021] [Accepted: 07/29/2021] [Indexed: 12/22/2022] Open
Abstract
Nanoencapsulation via spray cooling (also known as spray chilling and spray congealing) has been used with the aim to improve the functionality, solubility, and protection of drugs; as well as to reduce hygroscopicity; to modify taste and odor to enable oral administration; and many times to achieve a controlled release profile. It is a relatively simple technology, it does not require the use of low-cost solvents (mostly associated to toxicological risk), and it can be applied for lipid raw materials as excipients of oral pharmaceutical formulations. The objective of this work was to revise and discuss the advances of spray cooling technology, with a greater emphasis on the development of lipid micro/nanoparticles to the load of active pharmaceutical ingredients for oral administration.
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Affiliation(s)
- Carmen S. Favaro-Trindade
- Faculty of Animal Sciences and Food Engineering (FZEA), University of São Paulo, Rua Duque de Caxias, 225, Jardim Elite, Pirassununga 13625-900, Brazil; (F.E.d.M.J.); (P.K.O.)
| | - Fernando E. de Matos Junior
- Faculty of Animal Sciences and Food Engineering (FZEA), University of São Paulo, Rua Duque de Caxias, 225, Jardim Elite, Pirassununga 13625-900, Brazil; (F.E.d.M.J.); (P.K.O.)
| | - Paula K. Okuro
- Faculty of Animal Sciences and Food Engineering (FZEA), University of São Paulo, Rua Duque de Caxias, 225, Jardim Elite, Pirassununga 13625-900, Brazil; (F.E.d.M.J.); (P.K.O.)
| | - João Dias-Ferreira
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
| | - Amanda Cano
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy and Food Sciences, University of Barcelona, 08028 Barcelona, Spain;
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Patricia Severino
- Industrial Biotechnology Program, University of Tiradentes (UNIT), Av. Murilo Dantas 300, Aracaju 49032-490, Brazil;
- Institute of Technology and Research (ITP), Av. Murilo Dantas, 300, Aracaju 49010-390, Brazil
| | - Aleksandra Zielińska
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
- Institute of Human Genetics, Polish Academy of Sciences, Strzeszyńska 32, 60-479 Poznań, Poland
| | - Eliana B. Souto
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal;
- CEB—Centre of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Development and characterization of composition-equivalent formulations to the Sandostatin LAR® by the solvent evaporation method. Drug Deliv Transl Res 2021; 12:695-707. [PMID: 34215997 DOI: 10.1007/s13346-021-01013-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2021] [Indexed: 10/20/2022]
Abstract
Sandostatin long-acting release® (SLAR) is a long-acting injectable somatostatin analogue formulation composed of octreotide encapsulated in glucose-initiated poly(lactic-co-glycolic acid) (PLGA) microspheres. Despite the end of patent protection, SLAR remains resistant to generic competition likely due to complexity of production process, the uniqueness of the glucose star polymer, and the instability of octreotide in the formulation. Here, we describe development of glucose-PLGA-based composition-equivalent to SLAR formulations prepared by double emulsion-solvent evaporation method and the effect of variations in encapsulation variables on release kinetics and other formulation characteristics. The following encapsulation variables were adjusted at constant theoretical loading of 7.0% peptide: PLGA concentration, pH of inner water phase, and stirring rate. After final drying, the microspheres were examined with and without annealing at 50 °C under vacuum for 3 days. The loading and encapsulation efficiency (EE) of octreotide acetate, manufacturing yield, and in vitro drug release kinetics in PBStc (10 mM phosphate-buffered saline (PBS) with 1% triethyl citrate and 0.02% sodium azide at pH 7.4) were determined by UPLC. The in vitro release and acylation kinetics of octreotide for the solvent evaporation formulations prepared were similar to SLAR although the initial burst was slightly higher. Key formulation steps identified to maximize microsphere yield and minimize residual solvent and initial burst release included (a) addition of acetic acid to the peptide before preparation and (b) annealing the microspheres under vacuum after drying. Controlled release octreotide formulations prepared and investigated in this study could provide a better understanding of the effect of production variables on release performance and supply information useful for making progress in manufacturing of SLAR generic equivalents.
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18
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Mihalik NE, Wen S, Driesschaert B, Eubank TD. Formulation and In Vitro Characterization of PLGA/PLGA-PEG Nanoparticles Loaded with Murine Granulocyte-Macrophage Colony-Stimulating Factor. AAPS PharmSciTech 2021; 22:191. [PMID: 34169366 DOI: 10.1208/s12249-021-02049-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 05/11/2021] [Indexed: 02/06/2023] Open
Abstract
Granulocyte-macrophage colony-stimulating factor (GM-CSF) has demonstrated notable clinical activity in cancer immunotherapy, but it is limited by systemic toxicities, poor bioavailability, rapid clearance, and instability in vivo. Nanoparticles (NPs) may overcome these limitations and provide a mechanism for passive targeting of tumors. This study aimed to develop GM-CSF-loaded PLGA/PLGA-PEG NPs and evaluate them in vitro as a potential candidate for in vivo administration. NPs were created by a phase-separation technique that did not require toxic/protein-denaturing solvents or harsh agitation techniques and encapsulated GM-CSF in a more stable precipitated form. NP sizes were within 200 nm for enhanced permeability and retention (EPR) effect with negative zeta potentials, spherical morphology, and high entrapment efficiencies. The optimal formulation was identified by sustained release of approximately 70% of loaded GM-CSF over 24 h, alongside an average size of 143 ± 35 nm and entrapment efficiency of 84 ± 5%. These NPs were successfully freeze-dried in 5% (w/v) hydroxypropyl-β-cyclodextrin for long-term storage and further characterized. Bioactivity of released GM-CSF was determined by observing GM-CSF receptor activation on murine monocytes and remained fully intact. NPs were not cytotoxic to murine bone marrow-derived macrophages (BMDMs) at concentrations up to 1 mg/mL as determined by MTT and trypan blue exclusion assays. Lastly, NP components generated no significant transcription of inflammation-regulating genes from BMDMs compared to IFNγ+LPS "M1" controls. This report lays the preliminary groundwork to validate in vivo studies with GM-CSF-loaded PLGA/PEG-PLGA NPs for tumor immunomodulation. Overall, these data suggest that in vivo delivery will be well tolerated.
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Erfani A, Hanna A, Zarrintaj P, Manouchehri S, Weigandt K, Aichele CP, Ramsey JD. Biodegradable zwitterionic poly(carboxybetaine) microgel for sustained delivery of antibodies with extended stability and preserved function. SOFT MATTER 2021; 17:5349-5361. [PMID: 33954314 DOI: 10.1039/d1sm00154j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Many recent innovative treatments are based on monoclonal antibodies (mAbs) and other protein therapies. Nevertheless, sustained subcutaneous, oral or pulmonary delivery of such therapeutics is limited by the poor stability, short half-life, and non-specific interactions between the antibody (Ab) and delivery vehicle. Protein stabilizers (osmolytes) such as carboxybetaine can prevent non-specific interactions within proteins. In this work, a biodegradable zwitterionic poly(carboxybetaine), pCB, based microgel covalently crosslinked with tetra(ethylene glycol) diacrylate (TTEGDA) was synthesized for Ab encapsulation. The resulting microgels were characterized via FTIR, diffusion NMR, small-angle neutron scattering (SANS), and cell culture studies. The microgels were found to contain up to 97.5% water content and showed excellent degradability that can be tuned with crosslinking density. Cell compatibility of the microgel was studied by assessing the toxicity and immunogenicity in vitro. Cells exposed to microgel showed complete viability and no pro-inflammatory secretion of interleukin 6 (IL6) or tumor necrosis factor-alpha (TNFα). Microgel was loaded with Immunoglobulin G (as a model Ab), using a post-fabrication loading technique, and Ab sustained release from microgels of varying crosslinking densities was studied. The released Abs (especially from the high crosslinked microgels) proved to be completely active and able to bind with Ab receptors. This study opens a new horizon for scientists to use such a platform for local delivery of Abs to the desired target with minimized non-specific interactions.
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Affiliation(s)
- Amir Erfani
- School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
| | - Abanoub Hanna
- School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
| | - Payam Zarrintaj
- School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
| | - Saeed Manouchehri
- School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
| | - Katie Weigandt
- Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20889-6102, USA
| | - Clint P Aichele
- School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
| | - Joshua D Ramsey
- School of Chemical Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
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20
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Ahamad N, Kar A, Mehta S, Dewani M, Ravichandran V, Bhardwaj P, Sharma S, Banerjee R. Immunomodulatory nanosystems for treating inflammatory diseases. Biomaterials 2021; 274:120875. [PMID: 34010755 DOI: 10.1016/j.biomaterials.2021.120875] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 04/26/2021] [Accepted: 05/02/2021] [Indexed: 02/07/2023]
Abstract
Inflammatory disease (ID) is an umbrella term encompassing all illnesses involving chronic inflammation as the central manifestation of pathogenesis. These include, inflammatory bowel diseases, hepatitis, pulmonary disorders, atherosclerosis, myocardial infarction, pancreatitis, arthritis, periodontitis, psoriasis. The IDs create a severe burden on healthcare and significantly impact the global socio-economic balance. Unfortunately, the standard therapies that rely on a combination of anti-inflammatory and immunosuppressive agents are palliative and provide only short-term relief. In contrast, the emerging concept of immunomodulatory nanosystems (IMNs) has the potential to address the underlying causes and prevent reoccurrence, thereby, creating new opportunities for treating IDs. The IMNs offer exquisite ability to precisely modulate the immune system for a therapeutic advantage. The nano-sized dimension of IMNs allows them to efficiently infiltrate lymphatic drainage, interact with immune cells, and subsequently to undergo rapid endocytosis by hyperactive immune cells (HICs) at inflamed sites. Thus, IMNs serve to restore dysfunctional or HICs and alleviate the inflammation. We identified that different IMNs exert their immunomodulatory action via either of the seven mechanisms to modulate; cytokine production, cytokine neutralization, cellular infiltration, macrophage polarization, HICs growth inhibition, stimulating T-reg mediated tolerance and modulating oxidative-stress. In this article, we discussed representative examples of IMNs by highlighting their rationalization, design principle, and mechanism of action in context of treating various IDs. Lastly, we highlighted technical challenges in the application of IMNs and explored the future direction of research, which could potentially help to overcome those challenges.
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Affiliation(s)
- Nadim Ahamad
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Abhinanda Kar
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Sourabh Mehta
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India; IITB-Monash Research Academy IIT Bombay, Powai, Mumbai, 400076, India
| | - Mahima Dewani
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Vasanthan Ravichandran
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Prateek Bhardwaj
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Shivam Sharma
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Rinti Banerjee
- Nanomedicine Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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21
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Elkhatib MM, Ali AI, Al-badrawy AS. In Vitro and in Vivo Comparative Study of Oral Nanoparticles and Gut Iontophoresis as Oral Delivery Systems for Insulin. Biol Pharm Bull 2021; 44:251-258. [DOI: 10.1248/bpb.b20-00737] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Mona M. Elkhatib
- Department of Pharmaceutics, Faculty of Pharmacy, Cairo University
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22
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Abu Abed OS, Chaw CS, Williams L, Elkordy AA. PEGylated polymeric nanocapsules for oral delivery of trypsin targeted to the small intestines. Int J Pharm 2021; 592:120094. [PMID: 33197565 DOI: 10.1016/j.ijpharm.2020.120094] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/30/2020] [Accepted: 11/10/2020] [Indexed: 11/29/2022]
Abstract
The lack of trypsin in the intestines may end up with malnutrition; thus, trypsin replacement therapy is required in such cases. The main objective of this study is to formulate and evaluate polymeric nanocapsule (PNC) systems able to deliver trypsin to the small intestines with the minimal release in the stomach with the maximum biological activity. Four nanocapsule formulations were prepared by double emulsion/evaporation method as w/o/w and s/o/w. Particle size, encapsulation efficiencies, drug release in simulated gastric fluids (SGF) and simulated intestinal fluids (SIF), morphology, the biological activity of encapsulated trypsin and shelf-life stability were investigated for all formulations. All formulations had a spherical shape with submicron size, and encapsulation efficiency more than 80%. The biological activity of encapsulated trypsin was significantly affected by the amount of trehalose and whether the formulations were prepared as s/o/w or w/o/w (P < 0.05). Most of the encapsulated protein was released sustainedly at the target site (SIF) over 24 h with minimum amount release in the gastric fluids. Also, more than 90% of physical integrity trypsin encapsulated in all formulations was retained after storage under chilled conditions for six months. However, the enzymatic assay results show that with low trehalose content, the biological activity was low, while increasing the trehalose amount increased the shelf stability to reach around 100% after six months of the study. The results obtained in this research work clearly indicated a promising potential of controlled release polymeric nanocapsules containing trypsin to target the small intestine and protect trypsin from the harsh condition facing the proteins during the process of preparation or the period of storage.
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Affiliation(s)
- Omar S Abu Abed
- Department of Pharmacy Health & Well-being, Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland SR1 3SD, UK; Health Science Department, Faculty of Graduate Studies, Arab American University in Palestine, Ramallah, Palestine.
| | - Cheng Shu Chaw
- Department of Pharmacy Health & Well-being, Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland SR1 3SD, UK
| | - Lee Williams
- Department of Pharmacy Health & Well-being, Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland SR1 3SD, UK
| | - Amal A Elkordy
- Department of Pharmacy Health & Well-being, Faculty of Health Sciences and Wellbeing, University of Sunderland, Sunderland SR1 3SD, UK
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Ouyang H, Poh ASY, Heng PWS, Chan LW. Effect of Surfactants on the Melt Viscosity and Extent of Drug Embedment of Paraffin Wax Blends in Spray Congealing. J Pharm Innov 2020. [DOI: 10.1007/s12247-020-09517-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jia F, Li Y, Lu J, Deng X, Wu Y. Amphiphilic Block Copolymers-Guided Strategies for Assembling Nanoparticles: From Basic Construction Methods to Bioactive Agent Delivery Applications. ACS APPLIED BIO MATERIALS 2020; 3:6546-6555. [PMID: 35019385 DOI: 10.1021/acsabm.0c01039] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Over recent decades, amphiphilic block copolymers (ABCs) comprising both hydrophobic and hydrophilic segments within their covalently bound structure have been extensively investigated from basic science to various biomedical applications. Nanoparticles (NPs) self-assembled from ABCs have been a center of interest for controlled delivery of various therapeutic drugs, genes, proteins, and imaging agents for decades and continue to attract attention owing to their unique physical and biological properties. In this Spotlight on Applications, we review and summarize recent optimized preparation techniques in the fabrication of "drugs"-loaded NPs from ABCs based on our group progress. These techniques can be categorized into four types including (i) emulsification and solvent evaporation, (ii) double emulsification and solvent evaporation, (iii) nanoprecipitation, and (iv) film dispersion. By selecting proper techniques, bioactive agents with different properties could be incorporated into the NPs either alone or in a combination pattern. We analyze the parameters of various techniques and specifically we highlight the improvements on the improved techniques to simultaneously coload both hydrophilic/hydrophobic drugs and therapeutic nucleic acids in the single NPs. These techniques will allow researchers to select proper methods in designing "drugs"-loaded NPs from ABCs.
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Affiliation(s)
- Fan Jia
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yunhao Li
- Department of General Surgery, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, P. R. China
| | - Jianqing Lu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Xiongwei Deng
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Yan Wu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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25
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Yazdi JR, Tafaghodi M, Sadri K, Mashreghi M, Nikpoor AR, Nikoofal-Sahlabadi S, Chamani J, Vakili R, Moosavian SA, Jaafari MR. Folate targeted PEGylated liposomes for the oral delivery of insulin: In vitro and in vivo studies. Colloids Surf B Biointerfaces 2020; 194:111203. [DOI: 10.1016/j.colsurfb.2020.111203] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 06/10/2020] [Accepted: 06/16/2020] [Indexed: 02/03/2023]
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Spray congealed solid lipid microparticles as a sustained release delivery system for Gonadorelin [6-D-Phe]: Production, optimization and in vitro release behavior. Eur J Pharm Biopharm 2020; 154:18-32. [PMID: 32599272 DOI: 10.1016/j.ejpb.2020.06.017] [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] [Received: 03/18/2020] [Revised: 06/18/2020] [Accepted: 06/22/2020] [Indexed: 11/20/2022]
Abstract
Sustained release lipid microparticles for a potential veterinary application were produced by the means of spray congealing using saturated triglycerides with respective surfactants. The spray congealing process was optimized using unloaded and loaded microparticles, revealing the highest impact of the spray flow on material loss. Yield could be optimized by increasing the spray flow as well as a reduction of the melt temperature from 90 to 75 °C. For the delivery system developed in this study, a release of around 15 days was targeted. The release profile was in first hand determined with the use of model substances (aspartame and tryptophan), before incorporating the decapeptide Gonadorelin [6-D-Phe]. Release could be controlled between 2 and 28 d, which was dependent on stability of microparticles upon incubation, type and concentration of emulsifier, as well as the used triglyceride. Differential scanning calorimetry and X-ray powder diffraction confirmed the crystallization behavior of C14 and C16-triglycerides in combination with various emulsifiers in different modification without impact on release.
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Sladek S, McCartney F, Eskander M, Dunne DJ, Santos-Martinez MJ, Benetti F, Tajber L, Brayden DJ. An Enteric-Coated Polyelectrolyte Nanocomplex Delivers Insulin in Rat Intestinal Instillations when Combined with a Permeation Enhancer. Pharmaceutics 2020; 12:pharmaceutics12030259. [PMID: 32178442 PMCID: PMC7151133 DOI: 10.3390/pharmaceutics12030259] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/03/2020] [Accepted: 03/10/2020] [Indexed: 12/16/2022] Open
Abstract
The use of nanocarriers is being researched to achieve oral peptide delivery. Insulin-associated anionic polyelectrolyte nanoparticle complexes (PECs) were formed that comprised hyaluronic acid and chitosan in an optimum mass mixing ratio of 5:1 (MR 5), followed by coating with a pH-dependent polymer. Free insulin was separated from PECs by size exclusion chromatography and then measured by HPLC. The association efficiency of insulin in PECs was >95% and the loading was ~83 µg/mg particles. Dynamic light scattering and nanoparticle tracking analysis of PECs revealed low polydispersity, a negative zeta potential range of −40 to −50 mV, and a diameter range of 95–200 nm. Dissolution studies in simulated small intestinal fluid (FaSSIF-V2) revealed that the PECs were colloidally stable. PECs that were coated with Eudragit® L-100 delayed insulin release in FaSSIF-V2 and protected insulin against pancreatin attack more than uncoated PECs. Uncoated anionic PECs interacted weakly with mucin in vitro and were non-cytotoxic to Caco-2 cells. The coated and uncoated PECs, both concentrated further by ultrafiltration, permitted dosing of 50 IU/kg in rat jejunal instillations, but they failed to reduce plasma glucose or deliver insulin to the blood. When ad-mixed with the permeation enhancer (PE), sucrose laurate (100 mM), the physicochemical parameters of coated PECs were relatively unchanged, however blood glucose was reduced by 70%. In conclusion, the use of a PE allowed for the PEC-released bioactive insulin to permeate the jejunum. This has implications for the design of orally delivered particles that can release the payload when formulated with enhancers.
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Affiliation(s)
- Svenja Sladek
- UCD School of Veterinary Medicine and UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland; (S.S.); (F.M.)
| | - Fiona McCartney
- UCD School of Veterinary Medicine and UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland; (S.S.); (F.M.)
| | - Mena Eskander
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland; (M.E.); (D.J.D.); (M.J.S.-M.); (L.T.)
| | - David J. Dunne
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland; (M.E.); (D.J.D.); (M.J.S.-M.); (L.T.)
| | - Maria Jose Santos-Martinez
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland; (M.E.); (D.J.D.); (M.J.S.-M.); (L.T.)
- School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Federico Benetti
- ECSIN Laboratory–Ecamricert Srl, Corso Stati Uniti 4, I-35127 Padova, Italy;
| | - Lidia Tajber
- School of Pharmacy and Pharmaceutical Sciences, Trinity College Dublin, Dublin 2, Ireland; (M.E.); (D.J.D.); (M.J.S.-M.); (L.T.)
| | - David J. Brayden
- UCD School of Veterinary Medicine and UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland; (S.S.); (F.M.)
- Correspondence: ; Tel.: +353-1716-6013
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Nigam K, Kaur A, Tyagi A, Nematullah M, Khan F, Gabrani R, Dang S. Nose-to-brain delivery of lamotrigine-loaded PLGA nanoparticles. Drug Deliv Transl Res 2020; 9:879-890. [PMID: 30887226 DOI: 10.1007/s13346-019-00622-5] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Direct nose-to-brain delivery of drugs and faster onset of action have made intra-nasal route a much sought-after alternative to conventional routes of drug delivery to the brain. Lamotrigine is used for the treatment and management of neuropathic pain, and in the present work, lamotrigine (LTG)-PLGA nanoparticles were developed for intra-nasal delivery. The LTG-PLGA nanoparticles were prepared using modified nanoprecipitation method via high-speed homogenization and ultra-sonication techniques. Entrapment efficiency (EE%) of developed LTG-PLGA-NPs was found to be 84.87 ± 1.2% with drug loading of 10.21 ± 0.89%. The particle size of developed nanoparticles was found to be 184.6 nm with PDI value of 0.082 and zeta potential of - 18.8 mV. Dissolution profiles were studied in PBS (pH 7.4), simulated nasal fluid, and simulated cerebrospinal fluid where almost complete release was observed within 5 h in CSF. In vitro, cytotoxicity was analyzed using MTT assay where dose-dependent cytotoxicity was observed for developed LTG-PLGA-NPs. In vitro cytokine analysis showed positive effects of LTG-PLGA-NPs as pro-inflammatory cytokine suppressors. Further, in vivo studies were performed for radiolabeled formulation and drug (99mTc-LTG-PLGA-NPs and 99mTc-LTG-aqueous) using Sprague Dawley rats where with the help of gamma scintigraphy studies, various routes of administration viz. oral, intra-nasal, and intra-venous were compared. Various pharmacokinetic parameters were evaluated using biodistribution studies to estimate the drug levels in blood and brain. For 99mTc-LTG-PLGA-NPs via intra-nasal route, drug targeting efficiency (DTE%) was found to be 129.81% and drug target organ transport (DTP%) to be 22.81% in brain with Cmax of 3.82%/g within Tmax 1.5 h. Thus, the developed PLGA nanoparticles for intra-nasal delivery provide a possible alternative for existing available drug formulation for neuropathic pain management.
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Affiliation(s)
- Kuldeep Nigam
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, 201309, India
| | - Atinderpal Kaur
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, 201309, India
| | - Amit Tyagi
- Institute of Nuclear Medicine and Allied Sciences, Defence Research and Development Organisation, Timarpur, Delhi, 110054, India
| | - Md Nematullah
- Department of Biochemistry, Faculty of Science, Jamia Hamdard, New Delhi, 110062, India
| | - Farah Khan
- Department of Biochemistry, Faculty of Science, Jamia Hamdard, New Delhi, 110062, India
| | - Reema Gabrani
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, 201309, India
| | - Shweta Dang
- Department of Biotechnology, Jaypee Institute of Information Technology, A-10, Sector-62, Noida, 201309, India.
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29
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Qi H, Yang L, Shan P, Zhu S, Ding H, Xue S, Wang Y, Yuan X, Li P. The Stability Maintenance of Protein Drugs in Organic Coatings Based on Nanogels. Pharmaceutics 2020; 12:E115. [PMID: 32024083 PMCID: PMC7076513 DOI: 10.3390/pharmaceutics12020115] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/17/2020] [Accepted: 01/27/2020] [Indexed: 12/30/2022] Open
Abstract
Protein drugs are often loaded on scaffolds with organic coatings to realize a spatiotemporal controlled release. The stability or activity of protein drugs, however, is largely affected by the organic coating, particularly with organic solvents, which can dramatically reduce their delivery efficiency and limit their application scope. In spite of this, little attention has been paid to maintaining the stability of protein drugs in organic coatings, to date. Here, we used catalase as a model protein drug to exploit a kind of chemically cross-linked nanogel that can efficiently encapsulate protein drugs. The polymeric shells of nanogels can maintain the surface hydration shell to endow them with a protein protection ability against organic solvents. Furthermore, the protection efficiency of nanogels is higher when the polymeric shell is more hydrophilic. In addition, nanogels can be dispersed in polylactic acid (PLA) solution and subsequently coated on scaffolds to load catalase with high activity. To the best of our knowledge, this is the first use of hydrophilic nanogels as a protection niche to load protein drugs on scaffolds through an organic coating, potentially inspiring researchers to exploit new methods for protein drug loading.
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Affiliation(s)
- Hongzhao Qi
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
| | - Lijun Yang
- College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
| | - Peipei Shan
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
| | - Sujie Zhu
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
| | - Han Ding
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
| | - Sheng Xue
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
| | - Yin Wang
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
| | - Xubo Yuan
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;
| | - Peifeng Li
- Institute for Translational Medicine, Qingdao University, Qingdao 266021, China; (P.S.); (S.Z.); (H.D.); (S.X.); (Y.W.); (P.L.)
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Kim HU, Lim YJ, Lee HJ, Lee NJ, Bong KW. Degassed micromolding lithography for rapid fabrication of anisotropic hydrogel microparticles with high-resolution and high uniformity. LAB ON A CHIP 2020; 20:74-83. [PMID: 31746885 DOI: 10.1039/c9lc00828d] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Replica molding techniques, which are used to synthesize microparticles inside anisotropic micromolds, have been developed to enable the mass production of hydrogel particles. However, these techniques are limited in their ability to synthesize only a narrow range of particle compositions and shapes because of the difficulty in loading precursors into the micromolds as well as the low particle homogeneity due to the uneven evaporation of the precursors. Herein, we describe a simple yet powerful technique, called degassed micromolding lithography, which can load precursors within 1 min regardless of the wettability. This technique is based on the gas-solubility of a degassed micromold that acts as a suction pump to completely fill the mold by drawing precursor liquids in. The semi-closed system within the micromold prevents the uneven evaporation of the precursor, which is essential for the production of homogeneous particles. Furthermore, controlled uniformity of the hydrogel microparticles (C.V. < 2%) can be achieved by engineering the design of the micromold array.
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Affiliation(s)
- Hyeon Ung Kim
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Yong Jun Lim
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Hyun Jee Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Nak Jun Lee
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
| | - Ki Wan Bong
- Department of Chemical and Biological Engineering, Korea University, Seoul 02841, Republic of Korea.
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31
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Akkas T, Zakharyuta A, Taralp A, Ow-Yang CW. Cross-linked enzyme lyophilisates (CLELs) of urease: A new method to immobilize ureases. Enzyme Microb Technol 2020; 132:109390. [DOI: 10.1016/j.enzmictec.2019.109390] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 08/01/2019] [Accepted: 08/04/2019] [Indexed: 12/31/2022]
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32
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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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33
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Llabot JM, Luis de Redin I, Agüeros M, Dávila Caballero MJ, Boiero C, Irache JM, Allemandi D. In vitro characterization of new stabilizing albumin nanoparticles as a potential topical drug delivery system in the treatment of corneal neovascularization (CNV). J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.04.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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34
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Jara MO, Catalan-Figueroa J, Landin M, Morales JO. Finding key nanoprecipitation variables for achieving uniform polymeric nanoparticles using neurofuzzy logic technology. Drug Deliv Transl Res 2019; 8:1797-1806. [PMID: 29288356 DOI: 10.1007/s13346-017-0446-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nanoprecipitation is a simple and fast method to produce polymeric nanoparticles (Np); however, most applications require filtration or another separation technique to isolate the nanosuspension from aggregates or polydisperse particle production. In order to avoid variability introduced by these additional steps, we report here a systematic study of the process to yield monomodal and uniform Np production with the nanoprecipitation method. To further identify key variables and their interactions, we used artificial neural networks (ANN) to investigate the multiple variables which influence the process. In this work, a polymethacrylate derivative was used for Np (NpERS) and a database with several formulations and conditions was developed for the ANN model. The resulting ANN model had a high predictability (> 70%) for NpERS characteristics measured (mean size, PDI, zeta potential, and number of particle populations). Moreover, the model identified production variables leading to polymer supersaturation, such as mixing time and turbulence, as key in achieving monomodal and uniform NpERS in one production step. Polymer concentration and type of solvent, modifiers of polymer diffusion and supersaturation, were also shown to control NpERS characteristics. The ANN study allowed the identification of key variables and their interactions and resulted in a predictive model to study the NpERS production by nanoprecipitation. In turn, we have achieved an optimized method to yield uniform NpERS which could pave way for polymeric nanoparticle production methods with potential in biological and drug delivery applications.
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Affiliation(s)
- Miguel O Jara
- Department of Pharmaceutical Science and Technology, School of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, 4to piso, Of. 09, Independencia, 8380494, Santiago, Chile
| | - Johanna Catalan-Figueroa
- Department of Pharmaceutical Science and Technology, School of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, 4to piso, Of. 09, Independencia, 8380494, Santiago, Chile
| | - Mariana Landin
- Department of Pharmacology, Pharmacy and Pharmaceutical Technology, University of Santiago, 15782, Santiago de Compostela, Spain
| | - Javier O Morales
- Department of Pharmaceutical Science and Technology, School of Chemical and Pharmaceutical Sciences, University of Chile, Santos Dumont 964, 4to piso, Of. 09, Independencia, 8380494, Santiago, Chile. .,Advanced Center for Chronic Diseases (ACCDiS), 8380494, Santiago, Chile. .,Pharmaceutical Biomaterial Research Group, Department of Health Sciences, Luleå University of Technology, 97187, Luleå, Sweden.
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35
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Lee J, Arun Kumar S, Souery WN, Hinsdale T, Maitland KC, Bishop CJ. An ultraviolet-curable, core-shell vaccine formed via phase separation. J Biomed Mater Res A 2019; 107:2160-2173. [PMID: 31107571 DOI: 10.1002/jbm.a.36726] [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: 12/22/2018] [Revised: 05/03/2019] [Accepted: 05/06/2019] [Indexed: 12/13/2022]
Abstract
One of the central challenges in the field of vaccine delivery is to develop a delivery method that maintains antigen stability while also enabling control over the system's release kinetics. Addressing these challenges would not only allow for expanded access to vaccines worldwide but would also help significantly reduce mortality rates in developing countries. In this article, we report the development of single-injection vaccine depots for achieving novel delayed burst release. Synthesized poly(ε-caprolactone) and poly(ε-caprolactone) triacrylate were used to form stationary bubbles within an aqueous solution of 10% carboxymethylcellulose. These polymeric bubbles (referred to as "polybubbles") can then be injected with an aqueous solution of cargo, resulting in the formation of a polymeric shell. The puncture resulting from cargo injection self-heals prior to ultraviolet (UV) curing. UV curing and lyophilization were shown to enhance the stability of the polybubbles. BSA- CF 488 and HIV1 gp120/41 were used as the antigen in the study as a proof-of-concept. Further endeavors to automate the production of polybubbles are underway.
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Affiliation(s)
- Jihui Lee
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Shreedevi Arun Kumar
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Whitney N Souery
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Taylor Hinsdale
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Kristen C Maitland
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
| | - Corey J Bishop
- Department of Biomedical Engineering, Texas A&M University, College Station, Texas
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36
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Schoubben A, Ricci M, Giovagnoli S. Meeting the unmet: from traditional to cutting-edge techniques for poly lactide and poly lactide-co-glycolide microparticle manufacturing. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2019. [DOI: 10.1007/s40005-019-00446-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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37
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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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38
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Banerjee K, Gautam SK, Kshirsagar P, Ross KA, Spagnol G, Sorgen P, Wannemuehler MJ, Narasimhan B, Solheim JC, Kumar S, Batra SK, Jain M. Amphiphilic polyanhydride-based recombinant MUC4β-nanovaccine activates dendritic cells. Genes Cancer 2019; 10:52-62. [PMID: 31258832 PMCID: PMC6584211 DOI: 10.18632/genesandcancer.189] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Mucin 4 (MUC4) is a high molecular weight glycoprotein that is differentially overexpressed in pancreatic cancer (PC), functionally contributes to disease progression, and correlates with poor survival. Further, due to its aberrant glycosylation and extensive splicing, MUC4 is a potential target for cancer immunotherapy. Our previous studies have demonstrated the utility of amphiphilic polyanhydride nanoparticles as a useful platform for the development of protein-based prophylactic and therapeutic vaccines. In the present study, we encapsulated purified recombinant human MUC4-beta (MUC4β) protein in polyanhydride (20:80 CPTEG:CPH) nanoparticles (MUC4β-nanovaccine) and evaluated its ability to activate dendritic cells and induce adaptive immunity. Immature dendritic cells when pulsed with MUC4β-nanovaccine exhibited significant increase in the surface expressions of MHC I and MHC II and costimulatory molecules (CD80 and CD86), as well as, secretion of pro-inflammatory cytokines (IFN-γ, IL-6, and IL-12) as compared to cells exposed to MUC4β alone or MUC4β mixed with blank nanoparticles (MUC4β+NP). Following immunization, as compared to the other formulations, MUC4β-nanovaccine elicited higher IgG2b to IgG1 ratio of anti-MUC4β-antibodies suggesting a predominantly Th1-like class switching. Thus, our findings demonstrate MUC4β-nanovaccine as a novel platform for PC immunotherapy.
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Affiliation(s)
- Kasturi Banerjee
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Shailendra K Gautam
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Prakash Kshirsagar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kathleen A Ross
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Gaelle Spagnol
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Paul Sorgen
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Michael J Wannemuehler
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA.,Nanovaccine Institute, Ames, IA and Omaha, NE, USA
| | - Balaji Narasimhan
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA, USA.,Nanovaccine Institute, Ames, IA and Omaha, NE, USA
| | - Joyce C Solheim
- The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.,Nanovaccine Institute, Ames, IA and Omaha, NE, USA.,Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Sushil Kumar
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.,Nanovaccine Institute, Ames, IA and Omaha, NE, USA
| | - Maneesh Jain
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, USA.,The Fred and Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, USA.,Nanovaccine Institute, Ames, IA and Omaha, NE, USA
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39
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Park SC, Kim MJ, Baek SK, Park JH, Choi SO. Spray-Formed Layered Polymer Microneedles for Controlled Biphasic Drug Delivery. Polymers (Basel) 2019; 11:polym11020369. [PMID: 30960353 PMCID: PMC6419157 DOI: 10.3390/polym11020369] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 02/11/2019] [Accepted: 02/16/2019] [Indexed: 12/12/2022] Open
Abstract
In this study we present polymeric microneedles composed of multiple layers to control drug release kinetics. Layered microneedles were fabricated by spraying poly(lactic-co-glycolic acid) (PLGA) and polyvinylpyrrolidone (PVP) in sequence, and were characterized by mechanical testing and ex vivo skin insertion tests. The compression test demonstrated that no noticeable layer separation occurred, indicating good adhesion between PLGA and PVP layers. Histological examination confirmed that the microneedles were successfully inserted into the skin and indicated biphasic release of dyes incorporated within microneedle matrices. Structural changes of a model protein drug, bovine serum albumin (BSA), in PLGA and PVP matrices were examined by circular dichroism (CD) and fluorescence spectroscopy. The results showed that the tertiary structure of BSA was well maintained in both PLGA and PVP layers while the secondary structures were slightly changed during microneedle fabrication. In vitro release studies showed that over 60% of BSA in the PLGA layer was released within 1 h, followed by continuous slow release over the course of the experiments (7 days), while BSA in the PVP layer was completely released within 0.5 h. The initial burst of BSA from PLGA was further controlled by depositing a blank PLGA layer prior to forming the PLGA layer containing BSA. The blank PLGA layer acted as a diffusion barrier, resulting in a reduced initial burst. The formation of the PLGA diffusion barrier was visualized using confocal microscopy. Our results suggest that the spray-formed multilayer microneedles could be an attractive transdermal drug delivery system that is capable of modulating a drug release profile.
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Affiliation(s)
- Seok Chan Park
- Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS 66506, USA.
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA.
| | - Min Jung Kim
- Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS 66506, USA.
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA.
| | - Seung-Ki Baek
- QuadMedicine R&D Centre, QuadMedicine Inc., Seongnam 13209, Korea.
| | - Jung-Hwan Park
- Department of BioNano Technology, College of BioNano Technology, Gachon University, Seongnam 13120, Korea.
- Gachon BioNano Research Institute, Gachon University, Seongnam 13120, Korea.
| | - Seong-O Choi
- Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS 66506, USA.
- Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506, USA.
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40
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Development of bi-polymer lipid hybrid nanocarrier (BLN) to improve the entrapment and stability of insulin for efficient oral delivery. J Drug Deliv Sci Technol 2019. [DOI: 10.1016/j.jddst.2019.01.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Chua HY, Lui YS, Bhuthalingam R, Agrawal R, Wong T, Preiser PR, Venkatraman S. One-step solid-oil-water emulsion for sustained bioactive ranibizumab release. Expert Opin Drug Deliv 2018; 15:1143-1156. [PMID: 30354700 DOI: 10.1080/17425247.2018.1538209] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
BACKGROUND The advent of therapeutic proteins highlights the need for delivery systems that protect and extend the duration of its action. Ranibizumab-VEGF is one such drug used for treating wet AMD. This paper describes a facile method to sustain bioactive ranibizumab release from PLGA-based particles. METHODS Two emulsion techniques were explored namely: water-in-oil-in-water (WOW) and solid-in-oil-in-water (SOW) emulsion. The bioactivity of ranibizumab was evaluated by comparing its binding capability to VEGF, measured with ELISA to total protein measured by microBCA. RESULTS During the emulsion process, contact of ranibizumab with the water-oil interface is the main destabilizing factor and this can be prevented with the use of amphiphilic PVA and solid-state protein in WOW and SOW emulsion respectively. In vitro release of the ranibizumab-loaded particles indicated that a 15-day release could be achieved with SOW particles while the WOW particles generally suffered from a burst release. Released ranibizumab was capable of inhibiting endothelial cell growth indicating its retention of bioactivity. The suppression of burst release from the SOW particles was attributed to the relatively smooth surface morphology of the SOW microparticles. CONCLUSIONS The use of SOW encapsulation in modulating ranibizumab release while maintaining their bioactivity has been highlighted.
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Affiliation(s)
- Hui Yee Chua
- a Institute for Health Technologies, Interdisciplinary Graduate School , Nanyang Technological University , Singapore , Singapore.,b School of Materials Science and Engineering , Nanyang Technological University , Singapore , Singapore
| | - Yuan Siang Lui
- b School of Materials Science and Engineering , Nanyang Technological University , Singapore , Singapore
| | - Ramya Bhuthalingam
- b School of Materials Science and Engineering , Nanyang Technological University , Singapore , Singapore
| | | | - Tina Wong
- d Singapore Eye Research Institute , Singapore , Singapore
| | - Peter Rainer Preiser
- e School of Biological Sciences , Nanyang Technological University , Singapore , Singapore
| | - Subbu Venkatraman
- a Institute for Health Technologies, Interdisciplinary Graduate School , Nanyang Technological University , Singapore , Singapore.,b School of Materials Science and Engineering , Nanyang Technological University , Singapore , Singapore
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Nigam K, Kaur A, Tyagi A, Manda K, Gabrani R, Dang S. Baclofen-Loaded Poly (D,L-Lactide-Co-Glycolic Acid) Nanoparticles for Neuropathic Pain Management: In Vitro and In Vivo Evaluation. Rejuvenation Res 2018; 22:235-245. [PMID: 30175946 DOI: 10.1089/rej.2018.2119] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
In this work, poly (D,L-lactide-co-glycolic acid) (PLGA) nanoparticles of baclofen (Bcf-PLGA-NPs) were developed and optimized using nanoprecipitation method. The average particle size of the Bcf-PLGA-NP was found to be 124.8 nm, polydispersity index of 0.225, and zeta potential was found to be in the range of -20.4 mV. In vitro dissolution studies showed that Bcf was released from PLGA NPs in a sustained manner from 50% release in 2.5 hours to 80%-85% in 24 hours. MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay on Neuro-2a neuroblastoma cell line showed comparably low cytotoxicity of Bcf-PLGA-NPs as compared with aqueous solution of Bcf at reported Cmax values of the drug. To explore the nose-to-brain pathway, in vivo studies were carried out in Sprague-Dawley rats by radiolabeling of Bcf with technetium-99m (99mTc). Gamma scintigraphy images of the rats that were administered through intranasal (i.n.) route showed the maximum uptake of radiolabeled NPs from nose to brain at 3 hours as compared with the rats administered with NPs intravenously and orally. To assess the Bcf concentration in brain and blood, biodistribution studies were performed and following i.n. route the NPs were dispersed in brain (3.5%/g) and blood (3%/g) at 3 hours, and these observations were in agreement with the gamma scintigrams. Hence, from the results it was suggested that the developed PLGA NPs could serve as a potential carrier for the Bcf in the treatment of neuropathic pain.
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Affiliation(s)
- Kuldeep Nigam
- 1 Department of Biotechnology, Jaypee Institute of Information Technology, Noida, India
| | - Atinderpal Kaur
- 1 Department of Biotechnology, Jaypee Institute of Information Technology, Noida, India
| | - Amit Tyagi
- 2 Institute of Nuclear Medicine and Applied Sciences, DRDO, Delhi, India
| | - Kailash Manda
- 2 Institute of Nuclear Medicine and Applied Sciences, DRDO, Delhi, India
| | - Reema Gabrani
- 1 Department of Biotechnology, Jaypee Institute of Information Technology, Noida, India
| | - Shweta Dang
- 1 Department of Biotechnology, Jaypee Institute of Information Technology, Noida, India
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Mu H, Wang Y, Chu Y, Jiang Y, Hua H, Chu L, Wang K, Wang A, Liu W, Li Y, Fu F, Sun K. Multivesicular liposomes for sustained release of bevacizumab in treating laser-induced choroidal neovascularization. Drug Deliv 2018; 25:1372-1383. [PMID: 29869520 PMCID: PMC6058521 DOI: 10.1080/10717544.2018.1474967] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Bevacizumab is an anti-vascular endothelial growth factor drug that can be used to treat choroidal neovascularization (CNV). Bevacizumab-loaded multivesicular liposomes (Bev-MVLs) have been designed and developed to increase the intravitreal retention time of bevacizumab and reduce the number of injection times. In this study, Bev-MVLs with high encapsulation efficiency were prepared by double emulsification technique, and antibody activity was determined. The results revealed that 10% of human serum albumin (HSA) could preserve the activity of bevacizumab. In vitro release of Bev-MVLs appeared to be in a more sustained manner, the underlying mechanisms of Bev-MVLs indicated that bevacizumab was released from MVLs through diffusion and erosion. Results of sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) demonstrated that bevacizumab could retain its structural integrity after being released from MVLs in vitro. In vivo imaging was used to evaluate the retention time of antibody in rat eyes, while pharmacokinetic analysis was performed on rabbit eyes. These results indicated that Bev-MVLs exhibited sustained release effects as compared to bevacizumab solution (Bev-S). Bev-MVLs could effectively inhibit the thickness of CNV lesion as compared to Bev-S at 28 days after treatment. Furthermore, these data suggest that Bev-MVLs are biologically feasible to increase the retention time of bevacizumab in vitreous humor. This novel Bev-MVLs may therefore serve as a promising sustained release drug delivery system for the treatment of CNV.
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Affiliation(s)
- Hongjie Mu
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Yiyun Wang
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Yongchao Chu
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Ying Jiang
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Hongchen Hua
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Liuxiang Chu
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Kaili Wang
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Aiping Wang
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
| | - Wanhui Liu
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China.,b State Key Laboratory of Long-Acting and Targeting Drug Delivery System , Shandong Luye Pharmaceutical Co., Ltd. , Yantai , Shandong Province , People's Republic of China
| | - Youxin Li
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China.,b State Key Laboratory of Long-Acting and Targeting Drug Delivery System , Shandong Luye Pharmaceutical Co., Ltd. , Yantai , Shandong Province , People's Republic of China
| | - Fenghua Fu
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China.,b State Key Laboratory of Long-Acting and Targeting Drug Delivery System , Shandong Luye Pharmaceutical Co., Ltd. , Yantai , Shandong Province , People's Republic of China
| | - Kaoxiang Sun
- a School of Pharmacy, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education , Yantai University , Yantai , Shandong Province , People's Republic of China
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Effect of excipients on encapsulation and release of insulin from spray-dried solid lipid microparticles. Int J Pharm 2018; 550:439-446. [DOI: 10.1016/j.ijpharm.2018.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 09/03/2018] [Accepted: 09/05/2018] [Indexed: 01/08/2023]
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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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Lysozyme and DNase I loaded poly (D, L lactide-co-caprolactone) nanocapsules as an oral delivery system. Sci Rep 2018; 8:13158. [PMID: 30177767 PMCID: PMC6120872 DOI: 10.1038/s41598-018-31303-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 08/16/2018] [Indexed: 12/17/2022] Open
Abstract
Clinical applications of oral protein therapy for the treatment of various chronic diseases are limited due to the harsh conditions encounter the proteins during their journey in the Gastrointestinal Tract. Although nanotechnology forms a platform for the development of oral protein formulations, obtaining physiochemically stable formulations able to deliver active proteins is still challenging because of harsh preparation conditions. This study proposes the use of poly (D, L-lactic-co-caprolactone)-based polymeric nanocapsules at different monomers' ratios for protein loading and oral delivery. All formulations had a spherical shape and nano-scale size, and lysozyme encapsulation efficiency reached 80% and significantly affected by monomers' ratio. Trehalose and physical state of lysozyme had a significant effect on its biological activity (P < 0.05). Less than 10% of the protein was released in simulated gastric fluid, and 73% was the highest recorded accumulative release percentage in simulated intestinal fluid (SIF) over 24 h. The higher caprolactone content, the higher encapsulation efficiency (EE) and the lower SIF release recorded. Therefore, the formulation factors were optimised and the obtained system was PEGylated wisely to attain EE 80%, 81% SIF release within 24 h, and 98% lysozyme biological activity. The optimum formulation was prepared to deliver DNase, and similar attributes were obtained.
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Viola M, Sequeira J, Seiça R, Veiga F, Serra J, Santos AC, Ribeiro AJ. Subcutaneous delivery of monoclonal antibodies: How do we get there? J Control Release 2018; 286:301-314. [DOI: 10.1016/j.jconrel.2018.08.001] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 07/30/2018] [Accepted: 08/01/2018] [Indexed: 12/29/2022]
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48
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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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Hassanzadeh P, Atyabi F, Dinarvand R. Tissue engineering: Still facing a long way ahead. J Control Release 2018; 279:181-197. [DOI: 10.1016/j.jconrel.2018.04.024] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 04/09/2018] [Accepted: 04/11/2018] [Indexed: 02/07/2023]
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50
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Kim MJ, Park SC, Rizal B, Guanes G, Baek SK, Park JH, Betz AR, Choi SO. Fabrication of Circular Obelisk-Type Multilayer Microneedles Using Micro-Milling and Spray Deposition. Front Bioeng Biotechnol 2018; 6:54. [PMID: 29868571 PMCID: PMC5958193 DOI: 10.3389/fbioe.2018.00054] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/19/2018] [Indexed: 11/29/2022] Open
Abstract
In this study we present the fabrication of multilayer microneedles with circular obelisk and beveled-circular obelisk geometries, which have potential applications in implantable drug delivery devices. Micro-milling was adopted as an environmental-friendly and cost-effective way to fabricate primary metal microneedle masters. Polylactic acid (PLA) microneedles with sharp tips were then obtained by micromolding followed by oxygen plasma etching and used for preparing polydimethylsiloxane (PDMS) microneedle molds. A spray deposition process was employed for microneedle fabrication to facilitate the formation of multilayer microneedles while helping in maintenance of drug stability. Multilayer microneedles were successfully formed by sequential spraying of poly(lactic-co-glycolic acid) (PLGA) and polyvinylpyrrolidone (PVP) solutions into the mold. The fabricated PLGA-PVP multilayer microneedles penetrated the pig cadaver skin without breakage and released dyes in the skin at different rates, which reveals the potential for implantable microneedles enabling controlled release. Mechanical testing demonstrated that the obelisk-shaped microneedles were mechanically stronger than a pyramid-shaped microneedle and suggested that strong adhesion between PLGA and PVP layers was achieved as well. Structural stability and functionality of a model drug, horseradish peroxidase (HRP), upon spray deposition was examined using circular dichroism (CD) spectroscopy and enzyme activity assay. HRP retained its secondary structure and activity in PVP, whereas HRP in PLGA showed structural changes and reduced activity. Combination of micro-milling and spray deposition would be an attractive way of fabricating drug-containing polymer microneedles with various geometries while reducing prototyping time and process-induced drug instability.
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Affiliation(s)
- Min Jung Kim
- Department of Anatomy and Physiology, Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS, United States
| | - Seok Chan Park
- Department of Anatomy and Physiology, Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS, United States
| | - Binod Rizal
- Department of Anatomy and Physiology, Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS, United States
| | - Giselle Guanes
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, United States
| | - Seung-Ki Baek
- QuadMedicine R&D Centre, QuadMedicine Co., Ltd, Seongnam, South Korea
| | - Jung-Hwan Park
- Department of BioNano Technology, Gachon BioNano Research Institute, Gachon University, Seongnam, South Korea
| | - Amy R Betz
- Department of Mechanical and Nuclear Engineering, Kansas State University, Manhattan, KS, United States
| | - Seong-O Choi
- Department of Anatomy and Physiology, Nanotechnology Innovation Center of Kansas State, Kansas State University, Manhattan, KS, United States
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