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Tan S, Wang Y, Wei X, Xiao X, Gao L. Microneedle-mediated drug delivery for neurological diseases. Int J Pharm 2024; 661:124400. [PMID: 38950662 DOI: 10.1016/j.ijpharm.2024.124400] [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: 02/14/2024] [Revised: 06/23/2024] [Accepted: 06/26/2024] [Indexed: 07/03/2024]
Abstract
Neurological disorders, including brain injury, brain tumors, and neurodegenerative diseases, rank as the second leading cause of death worldwide. Exploring effective new treatments for neurological disorders has long been a hot research issue in clinical practice. Recently, microneedles (MNs) have attracted much attention due to their designation as a "painless and non-invasive" novel transdermal delivery method, characterized by their biocompatibility and sustainability. The advantages of MNs open an avenue for potential therapeutic interventions targeting neurological disorders. This review presents a concise overview of progress in the field of MNs, with highlights on the application in the treatment of neurological disorders. Notably, trends in the development of MNs and future challenges are also discussed.
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Affiliation(s)
- Shuna Tan
- Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China; West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China.
| | - Yitian Wang
- Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China; West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China.
| | - Xuan Wei
- Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China; West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China.
| | - Xiao Xiao
- Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China.
| | - Linbo Gao
- Laboratory of Molecular Translational Medicine, Center for Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, PR China; West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, PR China.
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Bandiwadekar A, Khot KB, Gopan G, Jose J. Microneedles: A Versatile Drug Delivery Carrier for Phytobioactive Compounds as a Therapeutic Modulator for Targeting Mitochondrial Dysfunction in the Management of Neurodegenerative Diseases. Curr Neuropharmacol 2024; 22:1110-1128. [PMID: 36237157 PMCID: PMC10964109 DOI: 10.2174/1570159x20666221012142247] [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: 05/16/2022] [Revised: 09/29/2022] [Accepted: 10/06/2022] [Indexed: 11/22/2022] Open
Abstract
Neurodegenerative disease (ND) is the fourth leading cause of death worldwide, with limited symptomatic therapies. Mitochondrial dysfunction is a major risk factor in the progression of ND, and it-increases the generation of reactive oxygen species (ROS). Overexposure to these ROS induces apoptotic changes leading to neuronal cell death. Many studies have shown the prominent effect of phytobioactive compounds in managing mitochondrial dysfunctions associated with ND, mainly due to their antioxidant properties. The drug delivery to the brain is limited due to the presence of the blood-brain barrier (BBB), but effective drug concentration needs to reach the brain for the therapeutic action. Therefore, developing safe and effective strategies to enhance drug entry in the brain is required to establish ND's treatment. The microneedle-based drug delivery system is one of the effective non-invasive techniques for drug delivery through the transdermal route. Microneedles are micronsized drug delivery needles that are self-administrable. It can penetrate through the stratum corneum skin layer without hitting pain receptors, allowing the phytobioactive compounds to be released directly into systemic circulation in a controlled manner. With all of the principles mentioned above, this review discusses microneedles as a versatile drug delivery carrier for the phytoactive compounds as a therapeutic potentiating agent for targeting mitochondrial dysfunction for the management of ND.
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Affiliation(s)
- Akshay Bandiwadekar
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
| | - Kartik Bhairu Khot
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
| | - Gopika Gopan
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
| | - Jobin Jose
- Department of Pharmaceutics, NGSM Institute of Pharmaceutical Sciences, NITTE (Deemed-to-be University), Mangalore, 575018, India
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Chakraborty C, Bhattacharya M, Lee SS. Current Status of Microneedle Array Technology for Therapeutic Delivery: From Bench to Clinic. Mol Biotechnol 2023:10.1007/s12033-023-00961-2. [PMID: 37987985 DOI: 10.1007/s12033-023-00961-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/23/2023] [Indexed: 11/22/2023]
Abstract
In recent years, microneedle (MN) patches have emerged as an alternative technology for transdermal delivery of various drugs, therapeutics proteins, and vaccines. Therefore, there is an urgent need to understand the status of MN-based therapeutics. The article aims to illustrate the current status of microneedle array technology for therapeutic delivery through a comprehensive review. However, the PubMed search was performed to understand the MN's therapeutics delivery status. At the same time, the search shows the number no of publications on MN is increasing (63). The search was performed with the keywords "Coated microneedle," "Hollow microneedle," "Dissolvable microneedle," and "Hydrogel microneedle," which also shows increasing trend. Similarly, the article highlighted the application of different microneedle arrays for treating different diseases. The article also illustrated the current status of different phases of MN-based therapeutics clinical trials. It discusses the delivery of different therapeutic molecules, such as drug molecule delivery, using microneedle array technology. The approach mainly discusses the delivery of different therapeutic molecules. The leading pharmaceutical companies that produce the microneedle array for therapeutic purposes have also been discussed. Finally, we discussed the limitations and future prospects of this technology.
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Affiliation(s)
- Chiranjib Chakraborty
- Department of Biotechnology, School of Life Science and Biotechnology, Adamas University, Kolkata, West Bengal, 700126, India.
| | - Manojit Bhattacharya
- Department of Zoology, Fakir Mohan University, Vyasa Vihar, Balasore, Odisha, 756020, India
| | - Sang-Soo Lee
- Institute for Skeletal Aging & Orthopedic Surgery, Hallym University-Chuncheon Sacred Heart Hospital, Chuncheon-si, Gangwon-do, 24252, Republic of Korea
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Sultana N, Waheed A, Ali A, Jahan S, Aqil M, Sultana Y, Mujeeb M. Exploring new frontiers in drug delivery with minimally invasive microneedles: fabrication techniques, biomedical applications and regulatory aspects. Expert Opin Drug Deliv 2023:1-17. [PMID: 37038271 DOI: 10.1080/17425247.2023.2201494] [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: 04/12/2023]
Abstract
INTRODUCTION Transdermal drug delivery is limited by the stratum corneum, inhibiting the therapeutic potential of the permeants. Microneedles (MN) have opened new frontiers in transdermal drug delivery systems. These micro-sized needles offer painless and accentuated delivery of drugs even with high molecular weights. AREAS COVERED The review embodies drug delivery strategies with microneedles with a description of MN types and fabrication techniques using various materials. The application of MN is not limited to drug delivery, but it also encompasses in vaccine delivery, diagnosis, phlebotomy and even in the cosmetic industry. The review also tabulates microneedle-based marketed formulations. In a nutshell, we aim to present a panoramic view of microneedles including the design, applications, and regulatory aspects of MN. EXPERT OPINION With the availability of numerous materials at the disposal of pharmaceutical scientists; the microneedle-based drug delivery technology has offered significant interventions towards the management of chronic maladies including cardiovascular disorders, diabetes, asthma, mental depression, etc. As happens with any new technology there are concerns with MN also such as biocompatibility issues with the material used for the fabrication. Nevertheless, the pharmaceutical industry must strive for preparing harmless, efficient, and cost-effective MN based delivery systems for wider acceptance and patient compliance.
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Affiliation(s)
- Niha Sultana
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
| | - Ayesha Waheed
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
| | - Asad Ali
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
| | - Samreen Jahan
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
| | - Mohd Aqil
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
| | - Yasmin Sultana
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
| | - Mohd Mujeeb
- School of Pharmaceutical Education & Research, Jamia Hamdard, New Delhi, India-110062
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Karim Z, Karwa P, Hiremath SRR. Polymeric microneedles for transdermal drug delivery- a review of recent studies. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Rawal SU, Patel BM, Patel MM. New Drug Delivery Systems Developed for Brain Targeting. Drugs 2022; 82:749-792. [PMID: 35596879 DOI: 10.1007/s40265-022-01717-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2022] [Indexed: 11/26/2022]
Abstract
The blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSF) are two of the most complex and sophisticated concierges that defend the central nervous system (CNS) by numerous mechanisms. While they maintain the neuro-ecological homeostasis through the regulated entry of essential biomolecules, their conservative nature challenges the entry of most of the drugs intended for CNS delivery. Targeted delivery challenges for a diverse spectrum of therapeutic agents/drugs (non-small molecules, small molecules, gene-based therapeutics, protein and peptides, antibodies) are diverse and demand specialized delivery and disease-targeting strategies. This review aims to capture the trends that have shaped the current brain targeting research scenario. This review discusses the physiological, neuropharmacological, and etiological factors that participate in the transportation of various drug delivery cargoes across the BBB/BCSF and influence their therapeutic intracranial concentrations. Recent research works spanning various invasive, minimally invasive, and non-invasive brain- targeting approaches are discussed. While the pre-clinical outcomes from many of these approaches seem promising, further research is warranted to overcome the translational glitches that prevent their clinical use. Non-invasive approaches like intranasal administration, P-glycoprotein (P-gp) inhibition, pro-drugs, and carrier/targeted nanocarrier-aided delivery systems (alone or often in combination) hold positive clinical prospects for brain targeting if explored further in the right direction.
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Affiliation(s)
- Shruti U Rawal
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, SG Highway, Chharodi, Ahmedabad, Gujarat, 382481, India
- Department of Pharmaceutical Technology, L.J. Institute of Pharmacy, L J University, Sarkhej-Sanand Circle Off. S.G. Road, Ahmedabad, Gujarat, 382210, India
| | - Bhoomika M Patel
- Department of Pharmacology, Institute of Pharmacy, Nirma University, SG Highway, Chharodi, Ahmedabad, Gujarat, 382481, India
| | - Mayur M Patel
- Department of Pharmaceutics, Institute of Pharmacy, Nirma University, SG Highway, Chharodi, Ahmedabad, Gujarat, 382481, India.
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Jin X, Zhang X, Li Y, Xu M, Yao Y, Wu Z, He Y, Gao J, Li B. Long-acting microneedle patch loaded with adipose collagen fragment for preventing the skin photoaging in mice. BIOMATERIALS ADVANCES 2022; 135:212744. [PMID: 35929203 DOI: 10.1016/j.bioadv.2022.212744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 02/21/2022] [Accepted: 02/28/2022] [Indexed: 12/15/2022]
Abstract
Skin photoaging is one of the most serious public health problems in the 21st century that may lead to thin, saggy, and structurally weakened skin. Adipokine therapy toward skin photoaging is always associated with poor permeability, biologic stability and the short in vivo release duration. Our laboratory previously extracted an extracellular matrix component of adipose tissue by purely physical methods, namely "adipose collagen fragment (ACF)", which holds promise for preventing skin photoaging. However, the injection treatment of ACF requires repeated preparation processes and injection procedures, which may be time-consuming and painful. Therefore, we describe the fabrication and assessment of a detachable ACF-microneedle (ACF-MN) patch that creates minimally invasive dermal microtrauma upon application. And we evaluated the morphology characterization, mechanical properties and puncture performance in vitro. The delivery efficiency of ACF from the patches was estimated in vitro and vivo. Then, the therapeutic efficacy was identified through applying ACF-MN patches into the dermis of UVA-induced photoaging mice and the related detection of skin photoaging was estimated. Our results demonstrated that ACF-MN exhibited well skin puncture performance and could release ACF component slowly. Meanwhile, this microneedle device loaded with ACF exhibited the treatment efficiency on skin photoaging in a mouse model. Therefore, implantation of the microtrauma-mediated, long-acting ACF-MN system can be utilized as a potential candidate for preventing skin photoaging in the clinic.
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Affiliation(s)
- Xiaoxuan Jin
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China
| | - Xiangdong Zhang
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China
| | - Yibao Li
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China
| | - Mimi Xu
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China
| | - Yao Yao
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China
| | - Zongjian Wu
- College of Chemistry and Bio-Engineering, Yichun University, 576 Xuefu Road, Yichun, JiangXi 336000, China
| | - Yunfan He
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China.
| | - Jianhua Gao
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China.
| | - Bin Li
- Department of Plastic Surgery, Nanfang Hospital, Southern Medical University, 1838 Guangzhou North Road, Guangzhou, Guangdong 510515, China.
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Yadav PR, Munni MN, Campbell L, Mostofa G, Dobson L, Shittu M, Pattanayek SK, Uddin MJ, Das DB. Translation of Polymeric Microneedles for Treatment of Human Diseases: Recent Trends, Progress, and Challenges. Pharmaceutics 2021; 13:1132. [PMID: 34452093 PMCID: PMC8401662 DOI: 10.3390/pharmaceutics13081132] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/17/2021] [Accepted: 07/20/2021] [Indexed: 12/14/2022] Open
Abstract
The ongoing search for biodegradable and biocompatible microneedles (MNs) that are strong enough to penetrate skin barriers, easy to prepare, and can be translated for clinical use continues. As such, this review paper is focused upon discussing the key points (e.g., choice polymeric MNs) for the translation of MNs from laboratory to clinical practice. The review reveals that polymers are most appropriately used for dissolvable and swellable MNs due to their wide range of tunable properties and that natural polymers are an ideal material choice as they structurally mimic native cellular environments. It has also been concluded that natural and synthetic polymer combinations are useful as polymers usually lack mechanical strength, stability, or other desired properties for the fabrication and insertion of MNs. This review evaluates fabrication methods and materials choice, disease and health conditions, clinical challenges, and the future of MNs in public healthcare services, focusing on literature from the last decade.
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Affiliation(s)
- Prateek Ranjan Yadav
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, UK; (P.R.Y.); (L.C.); (L.D.); (M.S.)
- Chemical Engineering Department, Indian Institute of Technology, Delhi 110016, India;
| | | | - Lauryn Campbell
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, UK; (P.R.Y.); (L.C.); (L.D.); (M.S.)
| | - Golam Mostofa
- Drug Delivery & Therapeutics Lab, Dhaka 1212, Bangladesh; (M.N.M.); (G.M.)
| | - Lewis Dobson
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, UK; (P.R.Y.); (L.C.); (L.D.); (M.S.)
| | - Morayo Shittu
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, UK; (P.R.Y.); (L.C.); (L.D.); (M.S.)
| | | | - Md. Jasim Uddin
- Drug Delivery & Therapeutics Lab, Dhaka 1212, Bangladesh; (M.N.M.); (G.M.)
- Department of Pharmacy, Brac University, 66 Mohakhali, Dhaka 1212, Bangladesh
| | - Diganta Bhusan Das
- Department of Chemical Engineering, Loughborough University, Loughborough LE11 3TU, UK; (P.R.Y.); (L.C.); (L.D.); (M.S.)
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Brain-targeted drug delivery assisted by physical techniques and its potential applications in traditional Chinese medicine. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2021. [DOI: 10.1016/j.jtcms.2021.07.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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Azmana M, Mahmood S, Hilles AR, Mandal UK, Saeed Al-Japairai KA, Raman S. Transdermal drug delivery system through polymeric microneedle: A recent update. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101877] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Siafaka PI, Bülbül EÖ, Mutlu G, Okur ME, Karantas ID, Okur NÜ. Transdermal Drug Delivery Systems and their Potential in Alzheimer’s Disease Management. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 19:360-373. [DOI: 10.2174/1871527319666200618150046] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 02/06/2023]
Abstract
Alzheimer's disease is a neuropathological disease with symptoms such as language problems,
confusion as to place or time, loss of interest in activities, which were previously enjoyed, behavioral
changes, and memory loss. Alzheimer's disease and other types of dementia affect almost
46.8 million people globally and are estimated to strike about 131.5 million people in 2050. It has been
reported that Alzheimer's is the sixth main cause of mortality. The most used drugs, which are currently
approved by the Food, and Drug Administration for Alzheimer’s disease are donepezil, rivastigmine,
galantamine, memantine, and the combination of donepezil and memantine. However, most of
the drugs present various adverse effects. Recently, the transdermal drug delivery route has gained increasing
attention as an emerging tool for Alzheimer's disease management. Besides, transdermal drug
delivery systems seem to provide hope for the management of various diseases, due to the advantages
that they offer in comparison with oral dosage forms. Herein, the current advancements in transdermal
studies with potent features to achieve better Alzheimer's disease management are presented. Many
researchers have shown that the transdermal systems provide higher efficiency since the first-pass hepatic
metabolism effect can be avoided and a prolonged drug release rate can be achieved. In summary,
the transdermal administration of Alzheimer's drugs is an interesting and promising topic, which
should be further elaborated and studied.
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Affiliation(s)
- Panoraia I. Siafaka
- Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ece Ö. Bülbül
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Istanbul University, Istanbul, Turkey
| | - Gökce Mutlu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Mehmet E. Okur
- Department of Pharmacology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
| | - Ioannis D. Karantas
- Hippokration General Hospital, 2nd Clinic of Internal Medicine, Thessaloniki, Greece
| | - Neslihan Ü. Okur
- Department of Pharmaceutical Technology, Faculty of Pharmacy, University of Health Sciences, Istanbul, Turkey
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Takehara H, Hadano Y, Kanda Y, Ichiki T. Effect of the Thermal History on the Crystallinity of Poly (L-lactic Acid) During the Micromolding Process. MICROMACHINES 2020; 11:E452. [PMID: 32344884 PMCID: PMC7281556 DOI: 10.3390/mi11050452] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/13/2020] [Accepted: 04/22/2020] [Indexed: 11/16/2022]
Abstract
The micromolding process using biocompatible thermoplastic polymers is highly attractive as a fabrication process of microdevices in biomedical applications. In this study, we investigated the effect of the thermal history in the micromolding process on the crystallinity of semi-crystalline polymers, such as poly (L-lactic acid) (PLLA), during their crystallization from the amorphous and molten states. In particular, the thermal history in the micromolding process using poly(dimethylsiloxane) replica mold embedded with a thermocouple was recorded. The crystallinity of PLLA constructs fabricated using the micromolding process was measured via wide-angle X-ray scattering, and crystallization kinetics was analyzed based on the Kolmogorov-Johnson-Mehl-Avrami equation. A crystallization rate of k = 0.061 min-n was obtained in the micromolding process of PLLA crystallization from the amorphous state, accompanied by the quenching operation, forming a large number of crystal nuclei. Finally, the fabrication of PLLA microneedles was performed using micromolding processes with different thermal histories. The information about the thermal history during the micromolding process is significant in the development of polymer microdevices to achieve better material properties.
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Affiliation(s)
- Hiroaki Takehara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; (Y.H.); (Y.K.); (T.I.)
- Innovation Center of NanoMedicine (iCONM), 3-25-14 Tonomachi, Kawasaki, Kanagawa 210-0821, Japan
| | - Yuki Hadano
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; (Y.H.); (Y.K.); (T.I.)
| | - Yukihiro Kanda
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; (Y.H.); (Y.K.); (T.I.)
| | - Takanori Ichiki
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan; (Y.H.); (Y.K.); (T.I.)
- Innovation Center of NanoMedicine (iCONM), 3-25-14 Tonomachi, Kawasaki, Kanagawa 210-0821, Japan
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Jamaledin R, Di Natale C, Onesto V, Taraghdari ZB, Zare EN, Makvandi P, Vecchione R, Netti PA. Progress in Microneedle-Mediated Protein Delivery. J Clin Med 2020; 9:E542. [PMID: 32079212 PMCID: PMC7073601 DOI: 10.3390/jcm9020542] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 02/12/2020] [Accepted: 02/13/2020] [Indexed: 02/06/2023] Open
Abstract
The growing demand for patient-compliance therapies in recent years has led to the development of transdermal drug delivery, which possesses several advantages compared with conventional methods. Delivering protein through the skin by transdermal patches is extremely difficult due to the presence of the stratum corneum which restricts the application to lipophilic drugs with relatively low molecular weight. To overcome these limitations, microneedle (MN) patches, consisting of micro/miniature-sized needles, are a promising tool to perforate the stratum corneum and to release drugs and proteins into the dermis following a non-invasive route. This review investigates the fabrication methods, protein delivery, and translational considerations for the industrial scaling-up of polymeric MNs for dermal protein delivery.
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Affiliation(s)
- Rezvan Jamaledin
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia (IIT@CRIB), 80125 Naples, Italy; (R.J.); (V.O.)
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125 Naples, Italy;
| | - Concetta Di Natale
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia (IIT@CRIB), 80125 Naples, Italy; (R.J.); (V.O.)
| | - Valentina Onesto
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia (IIT@CRIB), 80125 Naples, Italy; (R.J.); (V.O.)
| | - Zahra Baghban Taraghdari
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125 Naples, Italy;
| | | | - Pooyan Makvandi
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125 Naples, Italy;
- Institute for polymers, Composites and biomaterials (IPCB), National research council (CNR), 80125 Naples, Italy
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, P.O. Box: 61537-53843, Ahvaz, Iran
| | - Raffaele Vecchione
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia (IIT@CRIB), 80125 Naples, Italy; (R.J.); (V.O.)
| | - Paolo Antonio Netti
- Center for Advanced Biomaterials for Health Care, Istituto Italiano di Tecnologia (IIT@CRIB), 80125 Naples, Italy; (R.J.); (V.O.)
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125 Naples, Italy;
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Okada N. [Development of an Immune Regulation Technology Targeting the Skin and Promotion of the Practical Applications of Transcutaneous Vaccination/Immunotherapy]. YAKUGAKU ZASSHI 2020; 139:1129-1137. [PMID: 31474627 DOI: 10.1248/yakushi.19-00090] [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: 11/22/2022]
Abstract
In the premise of vaccination and allergen-specific immunotherapy, transcutaneous formulations have an advantage over conventional subcutaneous injections in terms of convenience, simplicity of delivery, and painless administration into the skin. Additionally, since transcutaneous formulations can be rendered cold-chain free, they do not require expert handling during transportation, storage, and stockpiling, which enables reductions in costs and distribution to distant areas. Furthermore, transcutaneous formulations are effective for improving adherence in children with phobias toward injection needles and may help in persuading them to perform self-vaccination and home immunotherapy against allergies in the future. We have been promoting the development of innovative "patch-type formulations for vaccination and immunotherapy" which regard skin as an immune organ and utilize our original transcutaneous administration devices (hydrophilic gel patch and microneedle patch) for their delivery. We have confirmed the safety and efficacy of transcutaneous formulations not only in demonstration experiments using animals but also in physician-initiated clinical studies. Additionally, in order to elucidate the mechanism for the induction of immune responses by transcutaneous formulations, we analyzed the immunological events occurring in the skin and regional lymph nodes which accompanied the application of transcutaneous administration devices or the delivery of antigens (vaccines and allergens) to the skin surface layer. This review presents our results from basic to clinical research on the development of transcutaneous formulations for vaccines and allergen-specific immunotherapy.
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Affiliation(s)
- Naoki Okada
- Graduate School of Pharmaceutical Sciences, Osaka University
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15
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Abstract
Under many circumstances, prophylactic immunizations are considered as the only possible strategy to control infectious diseases. Considerable efforts are typically invested in immunogen selection but, erroneously, the route of administration is not usually a major concern despite the fact that it can strongly influence efficacy. The skin is now considered a key component of the lymphatic system with tremendous potential as a target for vaccination. The purpose of this review is to present the immunological basis of the skin-associated lymphoid tissue, so as to provide understanding of the skin vaccination strategies. Several strategies are currently being developed for the transcutaneous delivery of antigens. The classical, mechanical or chemical disruptions versus the newest approaches based on microneedles for antigen delivery through the skin are discussed herein.
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16
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Singh P, Carrier A, Chen Y, Lin S, Wang J, Cui S, Zhang X. Polymeric microneedles for controlled transdermal drug delivery. J Control Release 2019; 315:97-113. [DOI: 10.1016/j.jconrel.2019.10.022] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/09/2019] [Accepted: 10/12/2019] [Indexed: 01/03/2023]
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17
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Liu Y, Ye L, Lin F, Gomaa Y, Flyer D, Carrion R, Patterson JL, Prausnitz MR, Smith G, Glenn G, Wu H, Compans RW, Yang C. Intradermal Vaccination With Adjuvanted Ebola Virus Soluble Glycoprotein Subunit Vaccine by Microneedle Patches Protects Mice Against Lethal Ebola Virus Challenge. J Infect Dis 2019; 218:S545-S552. [PMID: 29893888 DOI: 10.1093/infdis/jiy267] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
In this study, we investigated immune responses induced by purified Ebola virus (EBOV) soluble glycoprotein (sGP) subunit vaccines via intradermal immunization with microneedle (MN) patches in comparison with intramuscular (IM) injection in mice. Our results showed that MN delivery of EBOV sGP was superior to IM injection in eliciting higher levels and longer lasting antibody responses against EBOV sGP and GP antigens. Moreover, sGP-specific immune responses induced by MN or IM immunizations were effectively augmented by formulating sGP with a saponin-based adjuvant, and they were shown to confer complete protection of mice against lethal mouse-adapted EBOV (MA-EBOV) challenge. In comparison, mice that received sGP without adjuvant by MN or IM immunizations succumbed to lethal MA-EBOV challenge. These results show that immunization with EBOV sGP subunit vaccines with adjuvant by MN patches, which have been shown to provide improved safety and thermal stability, is a promising approach to protect against EBOV infection.
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Affiliation(s)
- Ying Liu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Economic Animals and Plants, Chinese Academy of Agricultural Sciences (CAAS), Changchun, Jilin, China.,Emory University School of Medicine, Atlanta, Georgia
| | - Ling Ye
- Emory University School of Medicine, Atlanta, Georgia
| | - Fang Lin
- Emory University School of Medicine, Atlanta, Georgia.,Central Laboratory, Tangdu Hospital at the Fourth Military Medical University, Xi'An, China
| | - Yasmine Gomaa
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta
| | | | | | | | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta
| | | | | | - Hua Wu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture, Institute of Special Economic Animals and Plants, Chinese Academy of Agricultural Sciences (CAAS), Changchun, Jilin, China
| | | | - Chinglai Yang
- Emory University School of Medicine, Atlanta, Georgia
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18
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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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19
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Kakami Y, Takeuchi I, Makino K. Percutaneous immunization with 40-nm antigen-encapsulated elastic liposomes. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Duarah S, Sharma M, Wen J. Recent advances in microneedle-based drug delivery: Special emphasis on its use in paediatric population. Eur J Pharm Biopharm 2019; 136:48-69. [DOI: 10.1016/j.ejpb.2019.01.005] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/24/2018] [Accepted: 01/07/2019] [Indexed: 12/12/2022]
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21
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Luo Z, Sun W, Fang J, Lee K, Li S, Gu Z, Dokmeci MR, Khademhosseini A. Biodegradable Gelatin Methacryloyl Microneedles for Transdermal Drug Delivery. Adv Healthc Mater 2019; 8:e1801054. [PMID: 30565887 PMCID: PMC6588190 DOI: 10.1002/adhm.201801054] [Citation(s) in RCA: 156] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 11/12/2018] [Indexed: 12/26/2022]
Abstract
Biocompatible and bioresponsive microneedles (MNs) are emerging technology platforms for sustained drug release with a potential to be a key player in transdermal delivery of therapeutics. In this paper, an innovative biodegradable MNs patch for the sustained delivery of drugs using a polymer patch, which can adjust delivery rates based on its crosslinking degree, is reported. Gelatin methacryloyl (GelMA) is used as the base for engineering biodegradable MNs. The anticancer drug doxorubicin (DOX) is loaded into GelMA MNs using the one molding step. The GelMA MNs can efficiently penetrate the stratum corneum layer of a mouse cadaver skin. Mechanical properties and drug release behavior of the GelMA MNs can be adjusted by tuning the degree of crosslinking. The efficacy of the DOX released from the GelMA MNs is tested and the anticancer efficacy of the released drugs against melanoma cell line A375 is demonstrated. Since GelMA is a versatile material in engineering tissue scaffolds, it is expected that the GelMA MNs can be used as a platform for the delivery of various therapeutics.
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Affiliation(s)
- Zhimin Luo
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; School of Pharmacy, Xi’an Jiaotong University, Xi’an 710061, China; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute, University of California-Los Angleles, Los Angeles, CA 90095, USA; Key Laboratory of Tibetan Medicine Research, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810001, China
| | - Wujin Sun
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute, University of California-Los Angleles, Los Angeles, CA 90095, USA
| | - Jun Fang
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA
| | - KangJu Lee
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute, University of California-Los Angleles, Los Angeles, CA 90095, USA
| | - Song Li
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Department of Medicine, University of California-Los Angeles, Los Angeles, CA 90095, USA
| | - Zhen Gu
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute, University of California-Los Angleles, Los Angeles, CA 90095, USA
| | - Mehmet R. Dokmeci
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute, University of California-Los Angleles, Los Angeles, CA 90095, USA; Department of Chemical and Biomolecular Engineering, University of California-Los Angeles, Los Angeles, CA 90095, USA
| | - Ali Khademhosseini
- Department of Bioengineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Center for Minimally Invasive Therapeutics (C-MIT), California NanoSystems Institute, University of California-Los Angleles, Los Angeles, CA 90095, USA; Jonsson Comprehensive Cancer Center, University of California - Los Angeles, 10833 Le Conte Ave, Los Angeles, CA 90024, USA; Department of Chemical and Biomolecular Engineering, University of California-Los Angeles, Los Angeles, CA 90095, USA; Department of Radiology, University of California-Los Angeles, Los Angeles, CA 90095, USA; Center of Nanotechnology, Department of Physics, King Abdulaziz University, Jeddah 21569, Saudi Arabia; Department of Bioindustrial Technologies, College of Animal Bioscience and Technology, Konkuk University, Seoul, Republic of Korea
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22
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Markwalter C, Kantor AG, Moore CP, Richardson KA, Wright DW. Inorganic Complexes and Metal-Based Nanomaterials for Infectious Disease Diagnostics. Chem Rev 2019; 119:1456-1518. [PMID: 30511833 PMCID: PMC6348445 DOI: 10.1021/acs.chemrev.8b00136] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Indexed: 12/12/2022]
Abstract
Infectious diseases claim millions of lives each year. Robust and accurate diagnostics are essential tools for identifying those who are at risk and in need of treatment in low-resource settings. Inorganic complexes and metal-based nanomaterials continue to drive the development of diagnostic platforms and strategies that enable infectious disease detection in low-resource settings. In this review, we highlight works from the past 20 years in which inorganic chemistry and nanotechnology were implemented in each of the core components that make up a diagnostic test. First, we present how inorganic biomarkers and their properties are leveraged for infectious disease detection. In the following section, we detail metal-based technologies that have been employed for sample preparation and biomarker isolation from sample matrices. We then describe how inorganic- and nanomaterial-based probes have been utilized in point-of-care diagnostics for signal generation. The following section discusses instrumentation for signal readout in resource-limited settings. Next, we highlight the detection of nucleic acids at the point of care as an emerging application of inorganic chemistry. Lastly, we consider the challenges that remain for translation of the aforementioned diagnostic platforms to low-resource settings.
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Affiliation(s)
| | | | | | | | - David W. Wright
- Department of Chemistry, Vanderbilt
University, Nashville, Tennessee 37235, United States
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23
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Matsuo K, Kitahata K, Kawabata F, Kamei M, Hara Y, Takamura S, Oiso N, Kawada A, Yoshie O, Nakayama T. A Highly Active Form of XCL1/Lymphotactin Functions as an Effective Adjuvant to Recruit Cross-Presenting Dendritic Cells for Induction of Effector and Memory CD8 + T Cells. Front Immunol 2018; 9:2775. [PMID: 30542351 PMCID: PMC6277777 DOI: 10.3389/fimmu.2018.02775] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 11/12/2018] [Indexed: 12/21/2022] Open
Abstract
The chemokine receptor XCR1 is known to be selectively expressed by cross-presenting dendritic cells (DCs), while its ligand XCL1/lymphotactin is mainly produced by activated CD8+ T cells and natural killer cells. Recent studies have shown that XCL1-antigen fusion proteins efficiently induce CD8+ T cell responses by preferentially delivering antigens to XCR1+ DCs. However, XCL1 per se was found to be a poor adjuvant for induction of CD8+ T cell responses. XCL1 is unique because of its lack of one of the two disulfide bonds commonly conserved in all other chemokines and thus has an unstable structure with a relatively weak chemokine activity. In the present study, we generated a variant form of murine XCL1 termed mXCL1-V21C/A59C that contained a second disulfide bond to stabilize its chemokine structure. We confirmed that mXCL1-V21C/A59C had much more potent chemotactic and calcium mobilization activities than the wild type XCL1 (mXCL1-WT). Intradermal injection of mXCL1-V21C/A59C, but not that of mXCL1-WT, significantly increased the accumulation of XCR1+CD103+ DCs in the injection site, and most of the accumulated XCR1+CD103+ DCs were found to take up co-injected ovalbumin (OVA). Furthermore, recruited XCR1+CD103+ DCs efficiently migrated to the draining lymph nodes and stayed for a prolonged period of time. Consequently, mXCL1-V21C/A59C strongly induced OVA-specific CD8+ T cells. The combination of OVA and mXCL1-V21C/A59C well protected mice from E.G7-OVA tumor growth in both prophylactic and therapeutic protocols. Finally, memory CTL responses were efficiently induced in mice immunized with OVA and mXCL1-V21C/A59C. Although intradermal injection of OVA and polyinosinic-polycytidylic acid (poly(I:C)) as an adjuvant also induced CD8+ T cell responses to OVA, poly (I:C) poorly recruited XCR1+CD103+ DCs in the injection site and failed to induce significant memory CTL responses to OVA. Collectively, our findings demonstrate that a highly active form of XCL1 is a promising vaccine adjuvant for cross-presenting DCs to induce antigen-specific effector and memory CD8+ T cells.
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Affiliation(s)
- Kazuhiko Matsuo
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, Osaka, Japan
| | - Kosuke Kitahata
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, Osaka, Japan
| | - Fumika Kawabata
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, Osaka, Japan
| | - Momo Kamei
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, Osaka, Japan
| | - Yuta Hara
- Laboratory of Cell Biology, Kindai University Faculty of Pharmacy, Osaka, Japan
| | - Shiki Takamura
- Department of Immunology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Naoki Oiso
- Department of Dermatology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Akira Kawada
- Department of Dermatology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Osamu Yoshie
- Kindai University, Osaka, Japan.,The Health and Kampo Institute, Miyagi, Japan
| | - Takashi Nakayama
- Division of Chemotherapy, Kindai University Faculty of Pharmacy, Osaka, Japan
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24
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Kang G, Tu TNT, Kim S, Yang H, Jang M, Jo D, Ryu J, Baek J, Jung H. Adenosine-loaded dissolving microneedle patches to improve skin wrinkles, dermal density, elasticity and hydration. Int J Cosmet Sci 2018; 40:199-206. [PMID: 29574973 DOI: 10.1111/ics.12453] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 03/08/2018] [Indexed: 12/27/2022]
Abstract
OBJECTIVE Although dissolving microneedle patches have been widely studied in the cosmetics field, no comparisons have been drawn with the topical applications available for routine use. In this study, two wrinkle-improving products, adenosine-loaded dissolving microneedle patches and an adenosine cream, were evaluated for efficacy, with respect to skin wrinkling, dermal density, elasticity, and hydration, and safety in a clinical test on the crow's feet area. METHODS Clinical efficacy and safety tests were performed for 10 weeks on 22 female subjects with wrinkles around their eyes. The adenosine-loaded dissolving microneedle patch was applied once every 3 days, in the evening, for 8 weeks to the designated crow's feet area. The adenosine cream was applied two times per day, in the morning and evening, for 8 weeks to the other crow's feet area. Skin wrinkling, dermal density, elasticity, and hydration were measured by using PRIMOS® premium, Dermascan® C, Cutometer® MPA580, and Corneometer® CM 825, respectively. In addition, subjective skin irritation was evaluated by self-observation, and objective skin irritation was assessed through expert interviews. RESULTS The adenosine-loaded dissolving microneedle patches had a similar or better efficacy than the adenosine cream. Both groups showed statistically significant efficacy for almost all parameters (P < 0.05). The dissolving microneedle patches had a long-lasting effect on the average wrinkle depth (P < 0.05), only showed efficacy in dermal density (P < 0.05), had an early improving effect on elasticity (P < 0.05), and demonstrated better hydration efficacy (P < 0.001). No adverse effects were observed in either group during the test period. CONCLUSIONS In the clinical efficacy test of four skin-improvement parameters, adenosine-loaded dissolving microneedle patches showed the same or better effect than the adenosine cream, although the weekly adenosine dose was 140 times lower. The dissolving microneedle patches caused no adverse reactions. These adenosine-loaded dissolving microneedle patches are expected to be safe, effective, and novel cosmetics for skin improvement.
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Affiliation(s)
- G Kang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - T N T Tu
- Life Science and Biotechnology, Underwood International College, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - S Kim
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - H Yang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - M Jang
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
| | - D Jo
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - J Ryu
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - J Baek
- Dermapro Skin Research Center, 30 Bangbaejoongang-ro, Seocho-gu, Seoul, 06684, Korea
| | - H Jung
- Department of Biotechnology, Yonsei University, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea.,Juvic Inc., Building 102, Yonsei Engineering Research Park, 50, Yonsei-ro, Seodaemun-gu, Seoul, 03722, Korea
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25
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Liu Y, Ye L, Lin F, Gomaa Y, Flyer D, Carrion R, Patterson JL, Prausnitz MR, Smith G, Glenn G, Wu H, Compans RW, Yang C. Intradermal immunization by Ebola virus GP subunit vaccines using microneedle patches protects mice against lethal EBOV challenge. Sci Rep 2018; 8:11193. [PMID: 30046140 PMCID: PMC6060117 DOI: 10.1038/s41598-018-29135-w] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/17/2018] [Indexed: 11/09/2022] Open
Abstract
Development of a safe and efficacious filovirus vaccine is of high importance to public health. In this study, we compared immune responses induced by Ebola virus (EBOV) glycoprotein (GP) subunit vaccines via intradermal immunization with microneedle (MN) patches and the conventional intramuscular (IM) injection in mice, which showed that MN delivery of GP induced higher levels and longer lasting antibody responses against GP than IM injection. Further, we found that EBOV GP in formulation with a saponin-based adjuvant, Matrix-M, can be efficiently loaded onto MN patches. Co-delivery of Matrix-M with GP significantly enhanced induction of antibody responses by MN delivery, as also observed for IM injection. Results from challenge studies showed that all mice that received the GP/adjuvant formulation by MN or IM immunizations were protected from lethal EBOV challenge. Further, 4 out of 5 mice vaccinated by MN delivery of unadjuvanted GP also survived the challenge, whereas only 1 out of 5 mice vaccinated by IM injection of unadjuvanted GP survived the challenge. These results demonstrate that MN patch delivery of EBOV GP subunit vaccines, which is expected to enable improved safety and thermal stability, can confer effective protection against EBOV infection that is superior to IM vaccination.
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MESH Headings
- Adjuvants, Immunologic/administration & dosage
- Animals
- Antibodies, Viral/genetics
- Antibodies, Viral/immunology
- Antibody Formation/immunology
- Ebola Vaccines/immunology
- Ebolavirus/immunology
- Ebolavirus/pathogenicity
- Glycoproteins/administration & dosage
- Glycoproteins/immunology
- Hemorrhagic Fever, Ebola/genetics
- Hemorrhagic Fever, Ebola/immunology
- Hemorrhagic Fever, Ebola/prevention & control
- Humans
- Immunization
- Injections, Intradermal
- Mice
- Vaccination
- Vaccines, Subunit/genetics
- Vaccines, Subunit/immunology
- Vaccines, Subunit/therapeutic use
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Affiliation(s)
- Ying Liu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture of China, Institute of Special Economic Animals and Plants, Chinese Academy of Agricultural Sciences CAAS, Changchun, Jilin 130112, P. R. China
- Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
| | - Ling Ye
- Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
| | - Fang Lin
- Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
- Central Laboratory, Tangdu Hospital at the Fourth Military Medical University, Xi'An, 710038, China
| | - Yasmine Gomaa
- Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, 30332, USA
| | - David Flyer
- Novavax Inc., 20 Firstfield Road, Gaithersburg, MD, 20878, USA
| | - Ricardo Carrion
- Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX, 78227, USA
| | - Jean L Patterson
- Texas Biomedical Research Institute, 7620 NW Loop 410, San Antonio, TX, 78227, USA
| | - Mark R Prausnitz
- Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA, 30332, USA
| | - Gale Smith
- Novavax Inc., 20 Firstfield Road, Gaithersburg, MD, 20878, USA
| | - Gregory Glenn
- Novavax Inc., 20 Firstfield Road, Gaithersburg, MD, 20878, USA
| | - Hua Wu
- Key Laboratory of Special Animal Epidemic Disease, Ministry of Agriculture of China, Institute of Special Economic Animals and Plants, Chinese Academy of Agricultural Sciences CAAS, Changchun, Jilin 130112, P. R. China
| | - Richard W Compans
- Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA
| | - Chinglai Yang
- Emory University School of Medicine, 1518 Clifton Road, Atlanta, GA, 30322, USA.
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26
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Nguyen TT, Giau VV, Vo TK. Current advances in transdermal delivery of drugs for Alzheimer's disease. Indian J Pharmacol 2018; 49:145-154. [PMID: 28706327 PMCID: PMC5497436 DOI: 10.4103/0253-7613.208143] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Alzheimer's disease (AD) is a common, progressive, fatal neurodegenerative disorder, which will play an increasingly important role both socially and financially in the aging populations. Treatments for AD show modest improvements in cognition and global functioning among patients. Furthermore, the oral administration of treating AD has had some drawbacks that decrease the medication adherence and efficacy of the therapy. Transdermal drugs are proposed as an alternative remedy to overcome the disadvantages of current pharmaceutical dosage options for this chronic disorder. They could have different strengths, such as offering a stable diffusion of active substance, avoiding the first pass metabolism, and reducing system adverse reactions. This article reviews the technical principles, novel techniques of transdermal delivery drug, and prospects for future development for the management of cognitive and behavioral dysfunctions in AD patients.
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Affiliation(s)
- Thuy Trang Nguyen
- Department of Pharmacy, Ho Chi Minh City University of Technology, Ho Chi Minh City, Vietnam, Korea.,Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam, Korea
| | - Vo Van Giau
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam, Korea.,Department of Food Technology, Ho Chi Minh City University of Food Industry, Ho Chi Minh City, Vietnam
| | - Tuong Kha Vo
- Vietnam Sports Hospital, Ministry of Culture, Sports and Tourism, Nam Tu Liem District, Hanoi City, Vietnam
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27
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Yang HW, Ye L, Guo XD, Yang C, Compans RW, Prausnitz MR. Ebola Vaccination Using a DNA Vaccine Coated on PLGA-PLL/γPGA Nanoparticles Administered Using a Microneedle Patch. Adv Healthc Mater 2017; 6. [PMID: 28075069 DOI: 10.1002/adhm.201600750] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/30/2016] [Indexed: 11/07/2022]
Abstract
Ebola DNA vaccine is incorporated into PLGA-PLL/γPGA nanoparticles and administered to skin using a microneedle (MN) patch. The nanoparticle delivery system increases vaccine thermostability and immunogenicity compared to free vaccine. Vaccination by MN patch produces stronger immune responses than intramuscular administration.
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Affiliation(s)
- Hung-Wei Yang
- Institute of Medical Science and Technology; National Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan R.O.C
- School of Chemical and Biomolecular Engineering; Georgia Institute of Technology; 311 Ferst Drive Atlanta GA 30332 USA
| | - Ling Ye
- Department of Microbiology and Immunology and Emory Vaccine Center; Emory University School of Medicine; 1648 Pierce Drive Atlanta GA 30322 USA
| | - Xin Dong Guo
- School of Chemical and Biomolecular Engineering; Georgia Institute of Technology; 311 Ferst Drive Atlanta GA 30332 USA
- College of Materials Science and Engineering; Beijing University of Chemical Technology; 15 Beisanhuandong Road Chaoyang District, Beijing China
| | - Chinglai Yang
- Department of Microbiology and Immunology and Emory Vaccine Center; Emory University School of Medicine; 1648 Pierce Drive Atlanta GA 30322 USA
| | - Richard W. Compans
- Department of Microbiology and Immunology and Emory Vaccine Center; Emory University School of Medicine; 1648 Pierce Drive Atlanta GA 30322 USA
| | - Mark R. Prausnitz
- School of Chemical and Biomolecular Engineering; Georgia Institute of Technology; 311 Ferst Drive Atlanta GA 30332 USA
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Clinical study of a retinoic acid-loaded microneedle patch for seborrheic keratosis or senile lentigo. Life Sci 2017; 168:24-27. [DOI: 10.1016/j.lfs.2015.12.051] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Revised: 12/05/2015] [Accepted: 12/30/2015] [Indexed: 11/23/2022]
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Tip-loaded dissolving microneedles for transdermal delivery of donepezil hydrochloride for treatment of Alzheimer’s disease. Eur J Pharm Biopharm 2016; 105:148-55. [DOI: 10.1016/j.ejpb.2016.06.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Revised: 06/06/2016] [Accepted: 06/07/2016] [Indexed: 11/23/2022]
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Microneedle patches for vaccination in developing countries. J Control Release 2015; 240:135-141. [PMID: 26603347 DOI: 10.1016/j.jconrel.2015.11.019] [Citation(s) in RCA: 138] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Revised: 10/31/2015] [Accepted: 11/17/2015] [Indexed: 12/17/2022]
Abstract
Millions of people die of infectious diseases each year, mostly in developing countries, which could largely be prevented by the use of vaccines. While immunization rates have risen since the introduction of the Expanded Program on Immunization (EPI), there remain major challenges to more effective vaccination in developing countries. As a possible solution, microneedle patches containing an array of micron-sized needles on an adhesive backing have been developed to be used for vaccine delivery to the skin. These microneedle patches can be easily and painlessly applied by pressing against the skin and, in some designs, do not leave behind sharps waste. The patches are single-dose, do not require reconstitution, are easy to administer, have reduced size to simplify storage, transportation and waste disposal, and offer the possibility of improved vaccine immunogenicity, dose sparing and thermostability. This review summarizes vaccination challenges in developing countries and discusses advantages that microneedle patches offer for vaccination to address these challenges. We conclude that microneedle patches offer a powerful new technology that can enable more effective vaccination in developing countries.
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Luo Y, Ma X, Liu X, Lu X, Niu H, Yu H, Bai C, Peng J, Xian Q, Wang Y, Zhu B. IL-28B down-regulates regulatory T cells but does not improve the protective immunity following tuberculosis subunit vaccine immunization. Int Immunol 2015; 28:77-85. [PMID: 26521300 DOI: 10.1093/intimm/dxv061] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 10/13/2015] [Indexed: 12/18/2022] Open
Abstract
Regulatory T cells (Tregs), which could be down-regulated by IL-28B, were reported to suppress T-cell-mediated immunity. The aim of this study was to investigate the role of IL-28B on the immune responses and protective efficacy of a tuberculosis (TB) subunit vaccine. First, a recombinant adenoviral vector expressing mouse IL-28B (rAd-mIL-28B) was constructed; then C57BL/6 mice were immunized with subunit vaccine ESAT6-Ag85B-Mpt64(190-198)-Mtb8.4-HspX (EAMMH) and rAd-mIL-28B together thrice or primed with Mycobacterium bovis bacillus Calmette-Gue'rin (BCG) and boosted by EAMMH and rAd-mIL-28B twice. At last the immune responses were evaluated, and the mice primed with BCG and boosted by subunit vaccines were challenged with virulent Mycobacterium tuberculosis H37Rv to evaluate the protective efficacy. The results showed that rAd-mIL-28B treatment significantly down-regulated the frequency of Tregs at 4 weeks after the last immunization but did not increase the Th1-type immune responses. Moreover, in the regimen of BCG priming and EAMMH boosting, rAd-mIL-28B treatment did not increase the antigen-specific cellular and humoral immune responses, and consequently did not reduce the bacteria load following H37Rv challenge. Instead, it induced more serious pathology reaction. In conclusion, IL-28B down-regulates Tregs following EAMMH vaccination but does not improve the protective immune responses.
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Affiliation(s)
- Yanping Luo
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xingming Ma
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xun Liu
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Xiaoling Lu
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hongxia Niu
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hongjuan Yu
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Chunxiang Bai
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jinxiu Peng
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
| | | | - Yong Wang
- ABSL-3 Lab, Wuhan University, Wuhan 430072, China
| | - Bingdong Zhu
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
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Desai P, Shete H, Adnaik R, Disouza J, Patravale V. Therapeutic targets and delivery challenges for Alzheimer’s disease. World J Pharmacol 2015; 4:236-264. [DOI: 10.5497/wjp.v4.i3.236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Revised: 05/29/2015] [Accepted: 08/11/2015] [Indexed: 02/06/2023] Open
Abstract
Dementia, including Alzheimer’s disease, the 21st Century epidemic, is one of the most significant social and health crises which has currently afflicted nearly 44 million patients worldwide and about new 7.7 million cases are reported every year. This portrays the unmet need towards better understanding of Alzheimer’s disease pathomechanisms and related research towards more effective treatment strategies. The review thus comprehensively addresses Alzheimer’s disease pathophysiology with an insight of underlying multicascade pathway and elaborates possible therapeutic targets- particularly anti-amyloid approaches, anti-tau approaches, acetylcholinesterase inhibitors, glutamatergic system modifiers, immunotherapy, anti-inflammatory targets, antioxidants, 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase inhibitors and insulin. In spite of extensive research leading to identification of newer targets and potent drugs, complete cure of Alzheimer’s disease appears to be an unreached holy grail. This can be attributed to their ineffective delivery across blood brain barrier and ultimately to the brain. With this understanding, researchers are now focusing on development of drug delivery systems to be delivered via suitable route that can circumvent blood brain barrier effectively with enhanced patient compliance. In this context, we have summarized current drug delivery strategies by oral, transdermal, intravenous, intranasal and other miscellaneous routes and have accentuated the future standpoint towards promising therapy ultimately leading to Alzheimer’s disease cure.
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Recent insights into cutaneous immunization: How to vaccinate via the skin. Vaccine 2015; 33:4663-74. [PMID: 26006087 DOI: 10.1016/j.vaccine.2015.05.012] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 04/21/2015] [Accepted: 05/01/2015] [Indexed: 12/24/2022]
Abstract
Technologies and strategies for cutaneous vaccination have been evolving significantly during the past decades. Today, there is evidence for increased efficacy of cutaneously delivered vaccines allowing for dose reduction and providing a minimally invasive alternative to traditional vaccination. Considerable progress has been made within the field of well-established cutaneous vaccination strategies: Jet and powder injection technologies, microneedles, microporation technologies, electroporation, sonoporation, and also transdermal and transfollicular vaccine delivery. Due to recent advances, the use of cutaneous vaccination can be expanded from prophylactic vaccination for infectious diseases into therapeutic vaccination for both infectious and non-infectious chronic conditions. This review will provide an insight into immunological processes occurring in the skin and introduce the key innovations of cutaneous vaccination technologies.
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Assessment of disease-related cognitive impairments using the novel object recognition (NOR) task in rodents. Behav Brain Res 2015; 285:176-93. [DOI: 10.1016/j.bbr.2014.10.025] [Citation(s) in RCA: 139] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 10/16/2014] [Accepted: 10/19/2014] [Indexed: 12/11/2022]
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Quinn HL, Kearney MC, Courtenay AJ, McCrudden MTC, Donnelly RF. The role of microneedles for drug and vaccine delivery. Expert Opin Drug Deliv 2014; 11:1769-80. [PMID: 25020088 DOI: 10.1517/17425247.2014.938635] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Transdermal drug delivery offers a number of advantages for the patient, not only due to its non-invasive and convenient nature, but also due to factors such as avoidance of first-pass metabolism and prevention of gastrointestinal degradation. It has been demonstrated that microneedles (MNs) can increase the number of compounds amenable to transdermal delivery by penetrating the skin's protective barrier, the stratum corneum, and creating a pathway for drug permeation to the dermal tissue below. AREAS COVERED MNs have been extensively investigated for drug and vaccine delivery. The different types of MN arrays and their delivery capabilities are discussed in terms of drugs, including biopharmaceutics and vaccines. Patient usage and effects on the skin are also considered. EXPERT OPINION MN research and development is now at the stage where commercialisation is a viable possibility. There are a number of long-term safety questions relating to patient usage which will need to be addressed moving forward. Regulatory guidance is awaited to direct the scale-up of the manufacturing process alongside provision of clearer patient instruction for safe and effective use of MN devices.
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Affiliation(s)
- Helen L Quinn
- Queen's University Belfast, School of Pharmacy , 97 Lisburn Road, Belfast, BT9 7BL , UK
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