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Chen X, Dou X, Qiu W. Promising strategies for smart insulin delivery system: Glucose-sensitive microneedle. Eur J Med Chem 2024; 278:116793. [PMID: 39216380 DOI: 10.1016/j.ejmech.2024.116793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/31/2024] [Accepted: 08/22/2024] [Indexed: 09/04/2024]
Abstract
The diabetes treatment landscape is rapidly evolving towards intelligent and precise therapeutic interventions. Among these advancements, glucose-sensitive microneedle patches (GSMPs), which can automatically adjust the transdermal release rate of insulin based on glucose concentrations, are emerging as a promising strategy. In this work, a new classification method has been proposed for GSMPs, categorizing them into integrated, all-in-one, and core-shell structures. The working mechanism and performance of GSMPs are thoroughly analyzed to compare the advantages and disadvantages of these three forms. The correlation between glucose-sensitive performance and normal blood glucose maintenance time (NGT) is further explored. Our findings indicate that all-in-one GSMPs demonstrate a positive correlation between in vitro glucose-sensitive controlled-release performance and NGT, unlike assembled GSMPs, where the performance is influenced by the matrix material and crosslinking factors. Simultaneously, challenges in clinical translation and future development trends are discussed from a patient's perspective. In summary, the new classification method, in-depth explanation of mechanisms, and analysis of challenges in this work contribute to a better understanding of the field of GSMPs and provide guidance for the development of more advanced and efficient GSMPs.
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Affiliation(s)
- Xiang Chen
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313000, PR China
| | - Xiaojie Dou
- First Affiliated Hospital of Huzhou University, Huzhou, 313000, PR China
| | - Wei Qiu
- Affiliated Huzhou Hospital, Zhejiang University School of Medicine, Huzhou, 313000, PR China.
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2
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Kim G, Ahn H, Chaj Ulloa J, Gao W. Microneedle sensors for dermal interstitial fluid analysis. MED-X 2024; 2:15. [PMID: 39363915 PMCID: PMC11445365 DOI: 10.1007/s44258-024-00028-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 08/22/2024] [Accepted: 09/05/2024] [Indexed: 10/05/2024]
Abstract
The rapid advancement in personalized healthcare has driven the development of wearable biomedical devices for real-time biomarker monitoring and diagnosis. Traditional invasive blood-based diagnostics are painful and limited to sporadic health snapshots. To address these limitations, microneedle-based sensing platforms have emerged, utilizing interstitial fluid (ISF) as an alternative biofluid for continuous health monitoring in a minimally invasive and painless manner. This review aims to provide a comprehensive overview of microneedle sensor technology, covering microneedle design, fabrication methods, and sensing strategy. Additionally, it explores the integration of monitoring electronics for continuous on-body monitoring. Representative applications of microneedle sensing platforms for both monitoring and therapeutic purposes are introduced, highlighting their potential to revolutionize personalized healthcare. Finally, the review discusses the remaining challenges and future prospects of microneedle technology. Graphical Abstract
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Affiliation(s)
- Gwangmook Kim
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA USA
| | - Hyunah Ahn
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA USA
| | - Joshua Chaj Ulloa
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA USA
| | - Wei Gao
- Andrew and Peggy Cherng Department of Medical Engineering, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA USA
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3
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Yao S, Zhang C, Ping J, Ying Y. Recent advances in hydrogel microneedle-based biofluid extraction and detection in food and agriculture. Biosens Bioelectron 2024; 250:116066. [PMID: 38310731 DOI: 10.1016/j.bios.2024.116066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 12/21/2023] [Accepted: 01/22/2024] [Indexed: 02/06/2024]
Abstract
Microneedle (MN) technology has been extensively studied for its advantages of minimal invasiveness and user-friendliness. Notably, hydrogel microneedles (HMNs) have garnered considerable attention for biofluid extraction due to its high swelling properties and biocompatibility. This review provides a comprehensive overview of definition, materials, and fabrication methods associated with HMNs. The extraction mechanisms and optimization strategies for enhancing extraction efficiency are summarized. Moreover, particular emphasis is placed on HMN-based biofluid extraction and detection in the domains of food and agriculture, encompassing the detection of small molecules, nucleic acids, and other relevant analytes. Finally, current challenges and possible solutions associated with HMN-based biofluid extraction are discussed.
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Affiliation(s)
- Shiyun Yao
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Chi Zhang
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China
| | - Jianfeng Ping
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China
| | - Yibin Ying
- Laboratory of Agricultural Information Intelligent Sensing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, PR China; ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 311200, PR China.
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Futaki M, Inamura K, Nishimura T, Niitsu T, Tojo T, Sugibayashi K, Todo H. A Hollow Microneedle Equipped with a Micropillar for Improved Needle Insertion and Injection of Drug Solution. Pharm Res 2024; 41:819-831. [PMID: 38443630 DOI: 10.1007/s11095-024-03681-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 02/21/2024] [Indexed: 03/07/2024]
Abstract
PURPOSE Hollow-type microneedles (hMNs) are a promising device for the effective administration of drugs into intradermal sites. Complete insertion of the needle into the skin and administration of the drug solution without leakage must be achieved to obtain bioavailability or a constant effect. In the present study, several types of hMN with or without a rounded blunt tip micropillar, which suppresses skin deformation, around a hollow needle, and the effect on successful needle insertion and administration of a drug solution was investigated. Six different types of hMNs with needle lengths of 1000, 1300, and 1500 µm with or without a micropillar were used. METHODS Needle insertion and the disposition of a drug in rat skin were investigated. In addition, the displacement-force profile during application of hMNs was also investigated using a texture analyzer with an artificial membrane to examine needle factors affecting successful insertion and administration of a drug solution by comparing with in vivo results. RESULTS According to the results with the drug distribution of iodine, hMN1300 with a micropillar was able to successfully inject drug solution into an intradermal site with a high success rate. In addition, the results of displacement-force profiles with an artificial membrane showed that a micropillar can be effective for depth control of the injected solution as well as the prevention of contact between the hMN pedestal and the deformed membrane. CONCLUSION In the present study, hMN1300S showed effective solution delivery into an intradermal site. In particular, a micropillar can be effective for depth control of the injected solution as well as preventing contact between the hMN pedestal and the deformed membrane. The obtained results will help in the design and development of hMNs that ensure successful injection of an administered drug.
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Affiliation(s)
- Mika Futaki
- Graduate School of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Kazuya Inamura
- Graduate School of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Tomoya Nishimura
- Processing Development Research Lab., Kao Corp., 2606 Akabane, Ichikai-cho, Haga-gun, Tochigi, 321-3426, Japan
| | - Takatoshi Niitsu
- Processing Development Research Lab., Kao Corp., 2606 Akabane, Ichikai-cho, Haga-gun, Tochigi, 321-3426, Japan
| | - Takehiko Tojo
- Processing Development Research Lab., Kao Corp., 2606 Akabane, Ichikai-cho, Haga-gun, Tochigi, 321-3426, Japan
| | - Kenji Sugibayashi
- Faculty of Pharmacy and Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
- Faculty of Pharmaceutical Sciences, Josai International University, 1 Gumyo, Togane, Chiba-ken, 283-8555, Japan
| | - Hiroaki Todo
- Graduate School of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan.
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Zheng Y, Ling Z, Li Z, Zhao P, Wen X, Qu F, Yu H, Chang H. A Rapidly Dissolvable Microneedle Patch with Tip-Accumulated Antigens for Efficient Transdermal Vaccination. Macromol Biosci 2023; 23:e2300253. [PMID: 37552862 DOI: 10.1002/mabi.202300253] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/21/2023] [Indexed: 08/10/2023]
Abstract
Dissolvable microneedles (DMNs) are an attractive alternative for vaccine delivery due to their user-friendly, skin-targeted, and minimally invasive features. However, vaccine waste and inaccurate dosage remain significant issues faced by DMNs, as the skin's elasticity makes it difficult to insert MNs completely. Here, a simple and reliable fabrication method are introduced based on two-casting micromolding with centrifugal drying to create a rapidly DMN patch made of hyaluronic acid. Ovalbumin (OVA), as the model antigens, is concentrated in the tip parts of the DMNs (60% of the needle height) to prevent antigen waste caused by skin elasticity. The time and temperature of the initial centrifugal drying significantly affect antigen distribution within the needle tips, with lower temperature facilitating antigen accumulation. The resulting DMN patch is able to penetrate the skin with enough mechanical strength and quickly release antigens into the skin tissue within 3 min. The in vivo study demonstrates that immunization of OVA with DMNs outperforms conventional vaccination routes, including subcutaneous and intramuscular injections, in eliciting both humoral and cellular immunity. This biocompatible DMN patch offers a promising and effective strategy for efficient and safe vaccination.
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Affiliation(s)
- Yanting Zheng
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
| | - Zhixin Ling
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
| | - Zhiming Li
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
| | - Puxuan Zhao
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Xueyu Wen
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
| | - Fengli Qu
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
| | - Haining Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang, 310014, China
| | - Hao Chang
- Hangzhou Institute of Medicine (HIM), Chinese Academy of Sciences, Hangzhou, Zhejiang, 310022, China
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6
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Friedel M, Thompson IAP, Kasting G, Polsky R, Cunningham D, Soh HT, Heikenfeld J. Opportunities and challenges in the diagnostic utility of dermal interstitial fluid. Nat Biomed Eng 2023; 7:1541-1555. [PMID: 36658344 DOI: 10.1038/s41551-022-00998-9] [Citation(s) in RCA: 58] [Impact Index Per Article: 58.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 12/06/2022] [Indexed: 01/21/2023]
Abstract
The volume of interstitial fluid (ISF) in the human body is three times that of blood. Yet, collecting diagnostically useful ISF is more challenging than collecting blood because the extraction of dermal ISF disrupts the delicate balance of pressure between ISF, blood and lymph, and because the triggered local inflammation further skews the concentrations of many analytes in the extracted fluid. In this Perspective, we overview the most meaningful differences in the make-up of ISF and blood, and discuss why ISF cannot be viewed generally as a diagnostically useful proxy for blood. We also argue that continuous sensing of small-molecule analytes in dermal ISF via rapid assays compatible with nanolitre sample volumes or via miniaturized sensors inserted into the dermis can offer clinically advantageous utility, particularly for the monitoring of therapeutic drugs and of the status of the immune system.
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Affiliation(s)
- Mark Friedel
- Novel Device Laboratory, Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, USA
| | - Ian A P Thompson
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA
| | - Gerald Kasting
- The James L. Winkle College of Pharmacy, University of Cincinnati Academic Health Center, Cincinnati, OH, USA
| | - Ronen Polsky
- Nano and Micro Sensors, Sandia National Laboratories, Albuquerque, NM, USA
| | - David Cunningham
- Department of Chemistry and Physics, Southeast Missouri State University, Cape Girardeau, MO, USA
| | - Hyongsok Tom Soh
- Department of Electrical Engineering, Stanford University, Stanford, CA, USA.
- Department of Radiology, Stanford University, Stanford, CA, USA.
| | - Jason Heikenfeld
- Novel Device Laboratory, Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, USA.
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7
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Ribet F, Bendes A, Fredolini C, Dobielewski M, Böttcher M, Beck O, Schwenk JM, Stemme G, Roxhed N. Microneedle Patch for Painless Intradermal Collection of Interstitial Fluid Enabling Multianalyte Measurement of Small Molecules, SARS-CoV-2 Antibodies, and Protein Profiling. Adv Healthc Mater 2023; 12:e2202564. [PMID: 36748807 DOI: 10.1002/adhm.202202564] [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: 10/06/2022] [Revised: 01/19/2023] [Indexed: 02/08/2023]
Abstract
Blood sampling is a common practice to monitor health, but it entails a series of drawbacks for patients including pain and discomfort. Thus, there is a demand for more convenient ways to obtain samples. Modern analytical techniques enable monitoring of multiple bioanalytes in smaller samples, opening possibilities for new matrices, and microsampling technologies to be adopted. Interstitial fluid (ISF) is an attractive alternative matrix that shows good correlation with plasma concentration dynamics for several analytes and can be sampled in a minimally invasive and painless manner from the skin at the point-of-care. However, there is currently a lack of sampling devices compatible with clinical translation. Here, to tackle state-of-the-art limitations, a cost-effective and compact single-microneedle-based device designed to painlessly collect precisely 1.1 µL of dermal ISF within minutes is presented. The fluid is volume-metered, dried, and stably stored into analytical-grade paper within the microfluidic device. The obtained sample can be mailed to a laboratory, quantitatively analyzed, and provide molecular insights comparable to blood testing. In a human study, the possibility to monitor various classes of molecular analytes is demonstrated in ISF microsamples, including caffeine, hundreds of proteins, and SARS-CoV-2 antibodies, some being detected in ISF for the first time.
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Affiliation(s)
- Federico Ribet
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
| | - Annika Bendes
- Division of Affinity Proteomics, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), SciLifeLab, Solna, 17165, Sweden
| | - Claudia Fredolini
- Division of Affinity Proteomics, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), SciLifeLab, Solna, 17165, Sweden
| | - Mikolaj Dobielewski
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
| | - Michael Böttcher
- MVZ Medizinische Labor Dessau Kassel GmbH, D-06847, Dessau-Rosslau, Germany
| | - Olof Beck
- Department of Clinical Neuroscience, Karolinska Institute, Stockholm, 17177, Sweden
| | - Jochen M Schwenk
- Division of Affinity Proteomics, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), SciLifeLab, Solna, 17165, Sweden
| | - Göran Stemme
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
| | - Niclas Roxhed
- Division of Micro and Nanosystems, School of Electrical Engineering and Computer Science, KTH Royal Institute of Technology, Stockholm, 10044, Sweden
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8
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Microneedles as a momentous platform for psoriasis therapy and diagnosis: A state-of-the-art review. Int J Pharm 2023; 632:122591. [PMID: 36626973 DOI: 10.1016/j.ijpharm.2023.122591] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/20/2022] [Accepted: 01/04/2023] [Indexed: 01/09/2023]
Abstract
Psoriasis is a chronic, autoimmune, and non-communicable skin disease with a worldwide prevalence rate of 2-3%, creating an economic burden on global health. Some significant risk factors associated with psoriasis include genetic predisposition, pathogens, stress, medications, etc. In addition, most patients with psoriasis should also deal with comorbidities such as psoriatic arthritis, inflammatory bowel diseases, cardiovascular diseases, and psychological conditions, including suicidal thoughts. Based on its severity, the treatment approach for psoriasis is categorised into three types, i.e., topical therapy, systemic therapy, and phototherapy. Topical therapy for mild-to-moderate psoriasis faces several issues, such as poor skin permeability, low skin retention of drug formulation, greasy texture of topical vehicle, lack of controlled release, and so on. On the other arrow, systemic therapy via an oral or parenteral route of drug administration involves numerous drawbacks, including first-pass hepatic metabolism, hepatotoxicity, gastrointestinal disturbances, needle pain and phobia, and requirement of healthcare professional to administer the drug. To overcome these limitations, researchers devised a microneedle-based drug delivery system for treating mild-to-moderate and moderate-to-severe psoriasis. A single microneedle system can deliver the anti-psoriatic drugs either locally (topical) or systemically (transdermal) by adjusting the needle height without involving any pain. In this contemplate, the current review provides concise information on the pathophysiology, risk factors, and comorbidities of psoriasis, followed by their current treatment approaches and limitations. Further, it meticulously discusses the potential of microneedles in psoriasis therapy and diagnosis, along with descriptions of their patents and clinical trials.
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Hoffman MSF, McKeage JW, Xu J, Ruddy BP, Nielsen PMF, Taberner AJ. Minimally invasive capillary blood sampling methods. Expert Rev Med Devices 2023; 20:5-16. [PMID: 36694960 DOI: 10.1080/17434440.2023.2170783] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
INTRODUCTION Whole blood samples, including arterial, venous, and capillary blood, are regularly used for disease diagnosis and monitoring. The global Covid-19 pandemic has highlighted the need for a more resilient screening capacity. Minimally invasive sampling techniques, such as capillary blood sampling, are routinely used for point of care testing in the home healthcare setting and clinical settings such as the Intensive Care Unit with less pain and wounding than conventional venepuncture. AREAS COVERED In this manuscript, we aim to provide a overview of state-of-the-art of techniques for obtaining samples of capillary blood. We first review both established and novel methods for releasing blood from capillaries in the skin. Next, we provide a comparison of different capillary blood sampling methods based on their mechanism, testing site, puncture size, cost, wound geometry, healing, and perceptions of pain. Finally, we overview established and new methods for enhancing capillary blood collection. EXPERT OPINION We expect that microneedles will prove to be a preferred option for paediatric blood collection. The ability of microneedles to collect a capillary blood sample without pain will improve paediatric healthcare outcomes. Jet injection may prove to be a useful method for facilitating both blood collection and drug delivery.
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Affiliation(s)
| | - James W McKeage
- Auckland Bioengineering Institute, University of Auckland, New Zealand
| | - Jiali Xu
- Auckland Bioengineering Institute, University of Auckland, New Zealand
| | - Bryan P Ruddy
- Auckland Bioengineering Institute, University of Auckland, New Zealand.,Department of Engineering Science, University of Auckland, Auckland, New Zealand
| | - Poul M F Nielsen
- Auckland Bioengineering Institute, University of Auckland, New Zealand.,Department of Engineering Science, University of Auckland, Auckland, New Zealand
| | - Andrew J Taberner
- Auckland Bioengineering Institute, University of Auckland, New Zealand.,Department of Engineering Science, University of Auckland, Auckland, New Zealand
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Mechanistic modeling-guided optimization of microneedle-based skin patch for rapid transdermal delivery of naloxone for opioid overdose treatment. Drug Deliv Transl Res 2023; 13:320-338. [PMID: 35879533 DOI: 10.1007/s13346-022-01202-w] [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: 06/18/2022] [Indexed: 12/13/2022]
Abstract
Naloxone, an FDA-approved opioid inhibitor, used to reverse opioid overdose complications has up till date faced challenges associated with its delivery. Limitations include the use of invasive delivery forms and the need for frequent redosing due to its short half-life. The goal of the current study was to design a transdermal rapidly dissolving polymeric microneedle (MN) patch with delivery and pharmacokinetic properties comparable to that seen with the commercially available NAL products, eliminating their delivery limitations. Patches of varying dimensions (500 µm; 100 array,800 µm; 100array, and 600 µm; 225 array) were fabricated to evaluate the effect of increasing MN length, and density (no. of needles/unit area) on drug release. Drug dose in each of these patches was 17.89 ± 0.23 mg, 17.2 ± 0.77 mg, and 17.8 ± 1.01 mg, respectively. Furthermore, the insertion efficiency of each of the MN patches was 94 ± 4.8%, 90.6 ± 1.69%, and 96 ± 1.29%, respectively. Compared to passive permeation, a reduced lag time of about 5-15 min was observed with a significant drug flux of 15.09 ± 7.68 g[Formula: see text]/cm2/h seen in the first 1 h (p < 0.05) with the array of 100 needles (500 µm long). Over 24 h, a four and ten-fold increase in permeation was seen with the longer length and larger density MN patch, respectively, when compared to the 500 µm (100 array) patch. Model simulations and analyses revealed the significance of needle base diameter and needle count in improving systemic pharmacokinetics of NAL.
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11
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Kim Y, Min HS, Shin J, Nam J, Kang G, Sim J, Yang H, Jung H. Film-trigger applicator (FTA) for improved skin penetration of microneedle using punching force of carboxymethyl cellulose film acting as a microneedle applicator. Biomater Res 2022; 26:53. [PMID: 36199121 PMCID: PMC9533547 DOI: 10.1186/s40824-022-00302-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 09/22/2022] [Indexed: 11/21/2022] Open
Abstract
Background Dissolving microneedle (DMN) is a transdermal drug delivery system that creates pore in the skin and directly deliver drug through the pore channel. DMN is considered as one of the promising system alternatives to injection because it is minimally invasive and free from needle-related issues. However, traditional DMN patch system has limitations of incomplete insertion and need of complex external devices. Here, we designed film-trigger applicator (FTA) system that successfully delivered DMN inside the skin layers using fracture energy of carboxymethyl cellulose (CMC) film via micropillars. We highlighted advantages of FTA system in DMN delivery compared with DMN patch, including that the film itself can act as DMN applicator. Methods FTA system consists of DMNs fabricated on the CMC film, DMN array holder having holes aligned to DMN array, and micropillars prepared using general purpose polystyrene. We analyzed punching force on the film by micropillars until the film puncture point at different CMC film concentrations and micropillar diameters. We also compared drug delivery efficiency using rhodamine B fluorescence diffusion and skin penetration using optical coherence tomography (OCT) of FTA with those of conventional DMN patch. In vivo experiments were conducted to evaluate DMN delivery efficiency using C57BL/6 mice and insulin as a model drug. Results FTA system showed enhanced delivery efficiency compared with that of the existing DMN patch system. We concluded CMC film as a successful DMN applicator as it showed enhanced DMN penetration in OCT and rhodamine B diffusion studies. Further, we applied FTA on shaved mouse dorsal skin and observed successful skin penetration. The FTA group showed higher level of plasma insulin in vivo than that of the DMN patch group. Conclusions FTA system consisting of simple polymer film and micropillars showed enhanced DMN delivery than that of the existing DMN patch system. Because FTA works with simple finger force without sticky patch and external devices, FTA is a novel and promising platform to overcome the limitations of conventional microneedle patch delivery system; we suggest FTA as a next generation applicator for microneedle application in the future. Supplementary Information The online version contains supplementary material available at 10.1186/s40824-022-00302-5.
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Affiliation(s)
- Youseong Kim
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - Hye Su Min
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - Jiwoo Shin
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - Jeehye Nam
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - Geonwoo Kang
- Juvic Inc, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea
| | - Jeeho Sim
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - Huisuk Yang
- Juvic Inc, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea
| | - Hyungil Jung
- Department of Biotechnology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea. .,Juvic Inc, 208Ho, 272, Digital-ro, Guro-gu, Seoul, 08389, Republic of Korea.
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12
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The clinical and translational prospects of microneedle devices, with a focus on insulin therapy for diabetes mellitus as a case study. Int J Pharm 2022; 628:122234. [PMID: 36191817 DOI: 10.1016/j.ijpharm.2022.122234] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Revised: 09/01/2022] [Accepted: 09/21/2022] [Indexed: 11/20/2022]
Abstract
Microneedles have the clinical advantage of being able to deliver complex drugs across the skin in a convenient and comfortable manner yet haven't successfully transitioned to medical practice. Diabetes mellitus is a complicated disease, which is commonly treated with multiple daily insulin injections, contributing to poor treatment adherence. Firstly, this review determines the clinical prospect of microneedles, alongside considerations that ought to be addressed before microneedle technology can be translated from bench to bedside. Thereafter, we use diabetes as a case study to consider how microneedle-based-technology may be successfully harnessed. Here, publications referring to insulin microneedles were evaluated to understand whether insertion efficiency, angle of insertion, successful dose delivery, dose adjustability, material biocompatibility and therapeutic stability are being addressed in early stage research. Moreover, over 3,000 patents from 1970-2019 were reviewed with the search term '"microneedle" AND "insulin"' to understand the current status of the field. In conclusion, the reporting of early stage microneedle research demonstrated a lack of consistency relating to the translational factors addressed. Additionally, a more rational design, based on a patient-centred approach is required before microneedle-based delivery systems can be used to revolutionise the lives of people living with diabetes following regulatory approval.
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Papadimitriou P, Andriotis EG, Fatouros D, Tzetzis D. Design and Prototype Fabrication of a Cost-Effective Microneedle Drug Delivery Apparatus Using Fused Filament Fabrication, Liquid Crystal Display and Semi-Solid Extrusion 3D Printing Technologies. MICROMACHINES 2022; 13:1319. [PMID: 36014241 PMCID: PMC9415897 DOI: 10.3390/mi13081319] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/10/2022] [Accepted: 08/13/2022] [Indexed: 06/15/2023]
Abstract
The current study describes the design of a cost-effective drug delivery apparatus that can be manufactured, assembled, and utilized as easily and quickly as possible, minimizing the time and expense of the supply chain. This apparatus could become a realistic alternative method of providing a vaccine or drug in harsh circumstances, including humanitarian disasters or a lack of medical and nursing staff, conditions that are frequently observed in developing countries. Simultaneously, with the use of microneedles (MNs), the apparatus can benefit from the numerous advantages offered by them during administration. The hollow microneedles in particular are internally perforated and are capable of delivering the active substance to the skin. The apparatus was designed with appropriate details in computer aided design software, and various 3D printing technologies were utilized in order to fabricate the prototype. The parts that required minimum accuracy, such as the main body of the apparatus, were fabricated with fused filament fabrication. The internal parts and the hollow microneedles were fabricated with liquid crystal display, and the substance for the drug loading carrier, which was an alginate gel cylinder, was fabricated with semi-solid extrusion 3D printing.
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Affiliation(s)
- Petros Papadimitriou
- Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, GR-57001 Thessaloniki, Greece
| | - Eleftherios G. Andriotis
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios Fatouros
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutical Sciences, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios Tzetzis
- Digital Manufacturing and Materials Characterization Laboratory, School of Science and Technology, International Hellenic University, GR-57001 Thessaloniki, Greece
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14
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Chandran R, Mohd Tohit ER, Stanslas J, Salim N, Tuan Mahmood TM. Investigation and Optimization of Hydrogel Microneedles for Transdermal Delivery of Caffeine. Tissue Eng Part C Methods 2022; 28:545-556. [PMID: 35485888 DOI: 10.1089/ten.tec.2022.0045] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Caffeine is therapeutically effective for treating apnea, cellulite formation, and pain management. It also exhibits neuroprotective and antioxidant activities in different models of Parkinson's disease and Alzheimer's disease. However, caffeine administration in a minimally invasive and sustainable manner through the transdermal route is challenging owing to its hydrophilic nature. Therefore, this study demonstrated a transdermal delivery approach for caffeine by utilizing hydrogel microneedle (MN) as a permeation enhancer. The influence of formulation parameters such as molecular weight (MW) of PMVE/MA (polymethyl vinyl ether/maleic anhydride) copolymer and sodium bicarbonate (NaHCO3) concentration on the swelling kinetics and mechanical integrity of the hydrogel MNs was investigated. In addition, the effect of different MN application methods and needle densities of hydrogel MN on the skin insertion efficiency and penetration depth was also evaluated. The swelling degree at equilibrium percentage (% Seq) recorded for hydrogels fabricated with Gantrez S-97 (MW = 1,500,000 Da) was significantly higher than formulation with Gantrez AN-139 (MW = 1,080,000 Da). Increasing the concentration of NaHCO3 also significantly increased the % Seq. Moreover, a 100% penetration was recorded for both the applicator and combination of applicator and thumb pressure compared with only 11% for thumb pressure alone. The average diameter of micropores created by the applicator method was 62.94 μm, which was significantly lower than the combination of both applicator and thumb pressure MN application (100.53 μm). Based on histological imaging, the penetration depth of hydrogel MN increased as the MN density per array decreased. The hydrogel MN with the optimized formulation and skin insertion parameters was tested for caffeine delivery in an in vitro Franz diffusion cell setup. Approximately 2.9 mg of caffeine was delivered within 24 h, and the drug release profile was best fitted to the Korsmeyer-Peppas model, displaying Super Case II kinetics. In conclusion, a combination of thumb and impact application methods and reduced needle density improved the skin penetration efficiency of hydrogel MNs. The results also show that hydrogel MNs fabricated from 3% w/w NaHCO3 and high MW of copolymer exhibit optimum physical and swelling properties for enhanced transdermal delivery.
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Affiliation(s)
- Rubhan Chandran
- Haematology Unit, Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (UPM), Serdang, Malaysia
| | - Eusni Rahayu Mohd Tohit
- Haematology Unit, Department of Pathology, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia (UPM), Serdang, Malaysia
| | - Johnson Stanslas
- Pharmacotherapeutics Unit, Department of Medicine, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Malaysia
| | - Norazlinaliza Salim
- Integrated Chemical Biophysics Research, Faculty of Science, Universiti Putra Malaysia, Serdang, Malaysia.,Centre of Foundation Studies for Agricultural Science, Universiti Putra Malaysia, Serdang, Malaysia
| | - Tuan Mazlelaa Tuan Mahmood
- Faculty of Pharmacy, The National University of Malaysia (UKM), Jalan Raja Muda Abdul Aziz, Kuala Lumpur, Malaysia
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15
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Li W, Li S, Fan X, Prausnitz MR. Microneedle patch designs to increase dose administered to human subjects. J Control Release 2021; 339:350-360. [PMID: 34597745 DOI: 10.1016/j.jconrel.2021.09.036] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 09/16/2021] [Accepted: 09/26/2021] [Indexed: 10/20/2022]
Abstract
Microneedle (MN) patches are being developed for many different kinds of drugs, but are often limited to delivering sub-milligram doses. This is because larger patches can be more difficult to apply to the skin, and acceptability of larger MN patches by human subjects has received limited study. Here, we fabricated 18 different large MN patch designs by laser microfabrication with different MN length (800-1500 μm), number of MNs (225 to 900 MNs per patch), space between MNs (600-1100 μm), and MN base diameter (200-250 μm). After manual application of these patches to human participants, we assessed dose delivery efficiency, total dose delivered, dose delivered per MN, depth of MN penetration and whole-MN delivery efficiency. We found that all of these parameters generally increased with decreased MN length, increased number of MNs (among those ≤1000 μm in length) and increased MN-MN spacing. All MN patch designs caused less pain than a pin prick sensation and were generally considered acceptable by the study participants. The MN patches induced mild, or sometimes moderate, transient erythema on skin. Study participants showed higher preference for MN patches for long-acting contraception compared with conventional options, indicating strong interest and acceptability of MN patches in this study.
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Affiliation(s)
- Wei Li
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA; School of Pharmaceutical Sciences, Wuhan University, Wuhan, Hubei Province, China.
| | - Song Li
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Xiyi Fan
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
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16
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Cui M, Zheng M, Wiraja C, Chew SWT, Mishra A, Mayandi V, Lakshminarayanan R, Xu C. Ocular Delivery of Predatory Bacteria with Cryomicroneedles Against Eye Infection. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102327. [PMID: 34494724 PMCID: PMC8564459 DOI: 10.1002/advs.202102327] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Indexed: 05/11/2023]
Abstract
The development of potent antibiotic alternatives with rapid bactericidal properties is of great importance in addressing the current antibiotic crisis. One representative example is the topical delivery of predatory bacteria to treat ocular bacterial infections. However, there is a lack of suitable methods for the delivery of predatory bacteria into ocular tissue. This work introduces cryomicroneedles (cryoMN) for the ocular delivery of predatory Bdellovibrio bacteriovorus (B. bacteriovorus) bacteria. The cryoMN patches are prepared by freezing B. bacteriovorus containing a cryoprotectant medium in a microneedle template. The viability of B. bacteriovorus in cryoMNs remains above 80% as found in long-term storage studies, and they successfully impede the growth of gram-negative bacteria in vitro or in a rodent eye infection model. The infection is significantly relieved by nearly six times through 2.5 days of treatment without substantial effects on the cornea thickness and morphology. This approach represents the safe and efficient delivery of new class of antimicrobial armamentarium to otherwise impermeable ocular surface and opens up new avenues for the treatment of ocular surface disorders.
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Affiliation(s)
- Mingyue Cui
- Department of Biomedical EngineeringCity University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina
- School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore637459Singapore
| | - Mengjia Zheng
- Department of Biomedical EngineeringCity University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina
- School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore637459Singapore
| | - Christian Wiraja
- School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore637459Singapore
| | - Sharon Wan Ting Chew
- School of Chemical and Biomedical EngineeringNanyang Technological University62 Nanyang DriveSingapore637459Singapore
| | - Arti Mishra
- Ocular Infections & Anti‐Microbials Research GroupSingapore Eye Research InstituteThe Academia20 College Road, Discovery TowerSingapore169856Singapore
| | - Venkatesh Mayandi
- Ocular Infections & Anti‐Microbials Research GroupSingapore Eye Research InstituteThe Academia20 College Road, Discovery TowerSingapore169856Singapore
| | - Rajamani Lakshminarayanan
- Ocular Infections & Anti‐Microbials Research GroupSingapore Eye Research InstituteThe Academia20 College Road, Discovery TowerSingapore169856Singapore
- Ophthalmology and Visual Sciences Academic Clinical ProgramDuke‐NUS Graduate Medical School8 College RoadSingapore169857Singapore
- Department of PharmacyNational University of Singapore18 Science DriveSingapore117543Singapore
| | - Chenjie Xu
- Department of Biomedical EngineeringCity University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina
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17
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18
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Bozorgi A, Fahimnia B. Micro array patch (MAP) for the delivery of thermostable vaccines in Australia: A cost/benefit analysis. Vaccine 2021; 39:6166-6173. [PMID: 34489130 DOI: 10.1016/j.vaccine.2021.08.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND It is anticipated that transforming the vaccine supply chain from syringe-and-needle to thermostable vaccines enabled by Micro Array Patch (MAP) will result in reduced supply chain costs as well as reduced wastes (environmental impact) and improved safety. This paper provides a thorough cost comparison of the conventional syringe-and-needle vaccine supply chain versus the MAP vaccine supply chain for influenza vaccine delivery in Australia. OBJECTIVE To determine the potential cost implications and general benefits of replacing syringe-and-needle flu vaccine with MAP-enabled thermostable flu vaccine in Australia. METHODS We first provide a snapshot of the existing flu vaccine supply chain in Australia including its limitations and opportunities for improvement. Data/information is collected through interviewing the key stakeholders across vaccine supply chain including vaccine manufacturers, logistics providers, clinics, hospitals, and pharmacies. A cost/benefit analysis of the anticipated supply chain of the MAP-enabled vaccine will reveal the opportunities and challenges of supply chain transformation for flu vaccine delivery in Australia. FINDINGS Our high-level practice-informed cost/benefit analysis identifies cold chain removal as an important source of cost saving, but administrative cost savings appear to be even more significant (e.g., time saving for nurses and those involved in cold chain management). Our analysis also identifies the key benefits and limitations of vaccine supply chain transformation in Australia. CONCLUSION We conclude that the benefits of moving from syringe-and-needle vaccines to thermostable MAP-delivered vaccines are beyond transportation and storage cost saving. Potential benefits through cost saving, waste reduction, and service level improvement are discussed along with various safety and wellbeing consequences as well as directions for future research in this area.
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Affiliation(s)
- Ali Bozorgi
- Institute of Transport and Logistics Studies, The University of Sydney Business School, Sydney, Australia.
| | - Behnam Fahimnia
- Institute of Transport and Logistics Studies, The University of Sydney Business School, Sydney, Australia.
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19
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Bozorgi A, Fahimnia B. Transforming the vaccine supply chain in Australia: Opportunities and challenges. Vaccine 2021; 39:6157-6165. [PMID: 34489129 DOI: 10.1016/j.vaccine.2021.08.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/09/2021] [Accepted: 08/10/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Analyzing potential benefits of thermostable vaccines delivered through Micro Array Patch (MAP) has received great attention in low and middle-income countries. The experience may or may not be the same in developed countries where the infrastructure is more developed. It is anticipated that transforming the vaccine supply chain from syringe-and-needle to thermostable MAP-delivered vaccines will result in reduced supply chain costs - including manufacturing/supply, logistics/distribution, and administration costs - as well as reduced wastes and improved safety. This paper provides an end-to-end supply chain analysis comparing the key aspects (cost, safety and environmental aspects) of the conventional syringe-and-needle vaccine supply chain with those of the MAP vaccine supply chain for influenza vaccine delivery in Australia. Directions for future research in this area will be provided. OBJECTIVE To determine the potential supply chain impacts of replacing syringe-and-needle flu vaccine with MAP-enabled thermostable flu vaccine in Australia. METHODS We analyze the current flu vaccine supply chain in Australia to identify practical limitations and opportunities for improvement. Data/information is collected through interviewing the key stakeholders across vaccine supply chain including vaccine manufacturers, logistics providers, clinics, hospitals, and pharmacies. FINDINGS A detailed practice-informed analysis is completed on the key operations of the flu vaccine supply chain. Barriers and limitations of the conventional flu vaccine are discussed, along with potential improvements that can be achieved through the implementation of MAP-enabled flu vaccine delivery. We discuss how technology-driven innovations can help advance vaccine supply chains, improve vaccine visibility, reduce wastes, and enable informed decision-making. CONCLUSION We find that the benefits of moving from syringe-and-needle vaccines to thermostable MAP-delivered vaccines are beyond transportation and storage cost saving. Potential benefits through cost saving, waste reduction, and service level improvement are discussed along with various safety and wellbeing consequences followed by directions for future research in this area.
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Affiliation(s)
- Ali Bozorgi
- Institute of Transport and Logistics Studies, The University of Sydney Business School, Sydney, Australia.
| | - Behnam Fahimnia
- Institute of Transport and Logistics Studies, The University of Sydney Business School, Sydney, Australia.
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20
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Gomaa Y, Kolluru C, Milewski M, Lee D, Zhang J, Saklatvala R, Prausnitz MR. Development of a thermostable oxytocin microneedle patch. J Control Release 2021; 337:81-89. [PMID: 34265331 DOI: 10.1016/j.jconrel.2021.07.011] [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: 04/26/2021] [Revised: 06/10/2021] [Accepted: 07/10/2021] [Indexed: 12/12/2022]
Abstract
Oxytocin is a nonapeptide hormone used in labor to initiate uterine contractions and to prevent and treat postpartum hemorrhage. Oxytocin is currently administered by injection and requires refrigerated transport and storage, which limits access, especially during home birth in developing countries. Here, we propose a thermostable, simple-to-administer microneedle (MN) patch for rapid delivery of oxytocin suitable for use by healthcare workers with limited training, like traditional birth attendants. Oxytocin (10 IU, 16.8 μg) coated onto stainless steel MN arrays was released into skin within 1-5 min after manual insertion. Among tested excipients, polyacrylic acid was best at stabilizing oxytocin stored at 75% relative humidity, with no significant loss for up to 2 months at 40 °C. Under desiccated conditions, MNs coated with formulations containing trehalose in a mixture of citrate buffer and ethanol retained 75% oxytocin potency at 40 °C for 12 months; the commercial oxytocin product Pitocin® was reduced to 35% potency under these conditions. These findings support development of MN patches for oxytocin administration with improved ease of use, extended thermostability and simplified logistics to enable greater access to this life-saving medicine.
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Affiliation(s)
- Yasmine Gomaa
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA; Department of Pharmaceutics, Faculty of Pharmacy, Alexandria University, Alexandria 21521, Egypt
| | - Chandana Kolluru
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | | | - Dinah Lee
- Merck & Co., Inc., Kenilworth, NJ, USA
| | | | - Robert Saklatvala
- Merck & Co., Inc., Kenilworth, NJ, USA; Currently at Kallyope, Inc., New York, NY, USA
| | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
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21
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Lee J, van der Maaden K, Gooris G, O'Mahony C, Jiskoot W, Bouwstra J. Engineering of an automated nano-droplet dispensing system for fabrication of antigen-loaded dissolving microneedle arrays. Int J Pharm 2021; 600:120473. [PMID: 33737094 DOI: 10.1016/j.ijpharm.2021.120473] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 02/28/2021] [Accepted: 03/05/2021] [Indexed: 12/13/2022]
Abstract
Dissolving microneedle arrays (dMNAs) are promising devices for intradermal vaccine delivery. The aim of this study was to develop a reproducible fabrication method for dMNAs based on an automated nano-droplet dispensing system that minimizes antigen waste. First, a polymer formulation was selected to dispense sufficiently small droplets (<18 nL) that can enter the microneedle cavities (base diameter 330 µm). Besides, three linear stages were assembled to align the dispenser with the cavities, and a vacuum chamber was designed to fill the cavities with dispensed droplets without entrapped air. Lastly, the dispenser and stages were incorporated to build a fully automated system. To examine the function of dMNAs as a vaccine carrier, ovalbumin was loaded in dMNAs by dispensing a mixture of ovalbumin and polymer formulation, followed by determining the ovalbumin loading and release into the skin. The results demonstrate that functional dMNAs which can deliver antigen into the skin were successfully fabricated via the automatic fabrication system, and hardly any antigen waste was encountered. Compared to the method that centrifuges the mould, it resulted in a 98.5% volume reduction of antigen/polymer solution and a day shorter production time. This system has potential for scale-up of manufacturing to an industrial scale.
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Affiliation(s)
- Jihui Lee
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Koen van der Maaden
- Tumor Immunology Group, Department of Immunology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, the Netherlands; TECO Development GmbH, 53359 Rheinbach, Germany
| | - Gerrit Gooris
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Conor O'Mahony
- Tyndall National Institute, University College Cork, Cork T12 R5CP, Ireland
| | - Wim Jiskoot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Joke Bouwstra
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands.
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22
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Permana AD, Nainu F, Moffatt K, Larrañeta E, Donnelly RF. Recent advances in combination of microneedles and nanomedicines for lymphatic targeted drug delivery. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2021; 13:e1690. [PMID: 33401339 DOI: 10.1002/wnan.1690] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/19/2022]
Abstract
Numerous diseases have been reported to affect the lymphatic system. As such, several strategies have been developed to deliver chemotherapeutics to this specific network of tissues and associated organs. Nanotechnology has been exploited as one of the main approaches to improve the lymphatic uptake of drugs. Different nanoparticle approaches utilized for both active and passive targeting of the lymphatic system are discussed here. Specifically, due to the rich abundance of lymphatic capillaries in the dermis, particular attention is given to this route of administration, as intradermal administration could potentially result in higher lymphatic uptake compared to other routes of administration. Recently, progress in microneedle research has attracted particular attention as an alternative for the use of conventional hypodermic injections. The benefits of microneedles, when compared to intradermal injection, are subsequently highlighted. Importantly, microneedles exhibit particular benefit in relation to therapeutic targeting of the lymphatic system, especially when combined with nanoparticles, which are further discussed. However, despite the apparent benefits provided by this combination approach, further comprehensive preclinical and clinical studies are now necessary to realize the potential extent of this dual-delivery platform, further taking into consideration eventual usability and acceptability in the intended patient end-users. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Nanotechnology Approaches to Biology > Nanoscale Systems in Biology.
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Affiliation(s)
| | - Firzan Nainu
- Faculty of Pharmacy, Hasanuddin University, Makassar, Indonesia
| | - Kurtis Moffatt
- School of Pharmacy, Queen's University Belfast, Belfast, UK
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23
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Leone M, Romeijn S, Du G, Le Dévédec S, Vrieling H, O'Mahony C, Bouwstra J, Kersten G. Diphtheria toxoid dissolving microneedle vaccination: Adjuvant screening and effect of repeated-fractional dose administration. Int J Pharm 2020; 580:119182. [DOI: 10.1016/j.ijpharm.2020.119182] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 12/13/2022]
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24
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Leone M, Romeijn S, Slütter B, O’Mahony C, Kersten G, Bouwstra JA. Hyaluronan molecular weight: Effects on dissolution time of dissolving microneedles in the skin and on immunogenicity of antigen. Eur J Pharm Sci 2020; 146:105269. [DOI: 10.1016/j.ejps.2020.105269] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/11/2020] [Accepted: 02/16/2020] [Indexed: 12/31/2022]
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25
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Russo E, Villa C. Poloxamer Hydrogels for Biomedical Applications. Pharmaceutics 2019; 11:E671. [PMID: 31835628 PMCID: PMC6955690 DOI: 10.3390/pharmaceutics11120671] [Citation(s) in RCA: 203] [Impact Index Per Article: 40.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 11/25/2019] [Accepted: 12/06/2019] [Indexed: 11/23/2022] Open
Abstract
This review article focuses on thermoresponsive hydrogels consisting of poloxamers which are of high interest for biomedical application especially in drug delivery for ophthalmic, injectable, transdermal, and vaginal administration. These hydrogels remain fluid at room temperature but become more viscous gel once they are exposed to body temperature. In this way, the gelling system remains at the topical level for a long time and the drug release is controlled and prolonged. Poloxamers are synthetic triblock copolymers of poly(ethylene oxide)-b-poly(propylene oxide)-b-poly(ethylene oxide) (PEO-PPO-PEO), also commercially known as Pluronics®, Synperonics® or Lutrol®. The different poloxamers cover a range of liquids, pastes, and solids, with molecular weights and ethylene oxide-propylene oxide weight ratios varying from 1100 to 14,000 and 1:9 to 8:2, respectively. Concentrated aqueous solutions of poloxamers form thermoreversible gels. In recent years this type of gel has arouse interest for tissue engineering. Finally, the use of poloxamers as biosurfactants is evaluated since they are able to form micelles in an aqueous environment above a concentration threshold known as critical micelle concentration (CMC). This property is exploited for drug delivery and different therapeutic applications.
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Affiliation(s)
- Eleonora Russo
- Department of Pharmacy, University of Genoa, Viale Benedetto XV, 16132 Genova, Italy;
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26
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Rodgers AM, Cordeiro AS, Donnelly RF. Technology update: dissolvable microneedle patches for vaccine delivery. MEDICAL DEVICES-EVIDENCE AND RESEARCH 2019; 12:379-398. [PMID: 31572025 PMCID: PMC6756839 DOI: 10.2147/mder.s198220] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 08/08/2019] [Indexed: 12/17/2022] Open
Abstract
Despite vaccination representing one of the greatest advances of modern preventative medicine, there remain significant challenges in vaccine distribution, delivery and compliance. Dissolvable microarray patches or dissolving microneedles (DMN) have been proposed as an innovative vaccine delivery platform that could potentially revolutionize vaccine delivery and circumvent many of the challenges faced with current vaccine strategies. DMN, due to their ease of use, lack of elicitation of pain response, self-disabling nature and ease of transport and distribution, offer an attractive delivery option for vaccines. Additionally, as DMN inherently targets the uppermost skin layers, they facilitate improved vaccine efficacy, due to direct targeting of skin antigen-presenting cells. A plethora of publications have demonstrated the efficacy of DMN vaccination for a range of vaccines, with influenza receiving particular attention. However, before the viable adoption of DMN for vaccination purposes in a clinical setting, a number of fundamental questions must be addressed. Accordingly, this review begins by introducing some of the key barriers faced by current vaccination approaches and how DMN can overcome these challenges. We introduce some of the recent advances in the field of DMN technology, highlighting the potential impact DMN could have, particularly in countries of the developing world. We conclude by reflecting on some of the key questions that remain unanswered and which warrant further investigation before DMNs can be utilized in clinical settings.
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Affiliation(s)
- Aoife M Rodgers
- School of Pharmacy, Queen’s University Belfast, Belfast, BT9 7BL, UK
| | - Ana Sara Cordeiro
- School of Pharmacy, Queen’s University Belfast, Belfast, BT9 7BL, UK
| | - Ryan F Donnelly
- School of Pharmacy, Queen’s University Belfast, Belfast, BT9 7BL, UK
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27
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Schepens B, Vos PJ, Saelens X, van der Maaden K. Vaccination with influenza hemagglutinin-loaded ceramic nanoporous microneedle arrays induces protective immune responses. Eur J Pharm Biopharm 2019; 136:259-266. [DOI: 10.1016/j.ejpb.2019.02.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 12/26/2018] [Accepted: 02/03/2019] [Indexed: 10/27/2022]
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28
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Leone M, Priester MI, Romeijn S, Nejadnik MR, Mönkäre J, O'Mahony C, Jiskoot W, Kersten G, Bouwstra JA. Hyaluronan-based dissolving microneedles with high antigen content for intradermal vaccination: Formulation, physicochemical characterization and immunogenicity assessment. Eur J Pharm Biopharm 2018; 134:49-59. [PMID: 30453025 DOI: 10.1016/j.ejpb.2018.11.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/15/2018] [Accepted: 11/15/2018] [Indexed: 02/06/2023]
Abstract
The purpose of this study was to optimize the manufacturing of dissolving microneedles (dMNs) and to increase the antigen loading in dMNs to investigate the effect on their physicochemical properties. To achieve this, a novel single-array wells polydimethylsiloxane mold was designed, minimizing antigen wastage during fabrication and achieving homogeneous antigen distribution among the dMN arrays. Using this mold, hyaluronan (HA)-based dMNs were fabricated and tested for maximal ovalbumin (OVA) content. dMNs could be fabricated with an OVA:HA ratio as high as 1:1 (w/w), without compromising their properties such as shape and penetration into the ex vivo human skin, even after storage at high humidity and temperature. High antigen loading did not induce protein aggregation during dMN fabrication as demonstrated by complementary analytical methods. However, the dissolution rate in ex vivo human skin decreased with increasing antigen loading. About 2.7 µg OVA could be delivered in mice by using a single array with an OVA:HA ratio of 1:3 (w/w). Intradermal vaccination with dMNs induced an immune response similar as subcutaneous injection and faster than after hollow microneedle injection. In conclusion, results suggest that (i) the polydimethylsiloxane mold design has an impact on the manufacturing of dMNs, (ii) the increase in antigen loading in dMNs affects the microneedle dissolution and (iii) dMNs are a valid alternative for vaccine administration over conventional injection.
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Affiliation(s)
- Mara Leone
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Marjolein I Priester
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Stefan Romeijn
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - M Reza Nejadnik
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Juha Mönkäre
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Conor O'Mahony
- Tyndall National Institute, University College Cork, Cork T12 R5CP, Ireland
| | - Wim Jiskoot
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands
| | - Gideon Kersten
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands; Institute for Translational Vaccinology (Intravacc), Antonie van Leeuwenhoeklaan 9, 3721MA Bilthoven, the Netherlands
| | - Joke A Bouwstra
- Division of BioTherapeutics, Leiden Academic Centre for Drug Research (LACDR), Leiden University, P.O. Box 2300, Einsteinweg 55, 2333 CC Leiden, the Netherlands.
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