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Lunter D, Klang V, Eichner A, Savic SM, Savic S, Lian G, Erdő F. Progress in Topical and Transdermal Drug Delivery Research-Focus on Nanoformulations. Pharmaceutics 2024; 16:817. [PMID: 38931938 DOI: 10.3390/pharmaceutics16060817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/06/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024] Open
Abstract
Skin is the largest organ and a multifunctional interface between the body and its environment. It acts as a barrier against cold, heat, injuries, infections, chemicals, radiations or other exogeneous factors, and it is also known as the mirror of the soul. The skin is involved in body temperature regulation by the storage of fat and water. It is an interesting tissue in regard to the local and transdermal application of active ingredients for prevention or treatment of pathological conditions. Topical and transdermal delivery is an emerging route of drug and cosmetic administration. It is beneficial for avoiding side effects and rapid metabolism. Many pharmaceutical, technological and cosmetic innovations have been described and patented recently in the field. In this review, the main features of skin morphology and physiology are presented and are being followed by the description of classical and novel nanoparticulate dermal and transdermal drug formulations. The biophysical aspects of the penetration of drugs and cosmetics into or across the dermal barrier and their investigation in diffusion chambers, skin-on-a-chip devices, high-throughput measuring systems or with advanced analytical techniques are also shown. The current knowledge about mathematical modeling of skin penetration and the future perspectives are briefly discussed in the end, all also involving nanoparticulated systems.
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Affiliation(s)
- Dominique Lunter
- Department of Pharmaceutical Technology, Eberhard-Karls-Universität Tübingen, 72074 Tübingen, Germany
| | - Victoria Klang
- Department of Pharmaceutical Sciences, University of Vienna, 1010 Vienna, Austria
| | - Adina Eichner
- Department of Dermatology and Venereology, Martin Luther University Halle-Wittenberg, 06108 Halle, Germany
- Institute of Applied Dermatopharmacy, Martin Luther University Halle-Wittenberg (IADP) e.V., 06108 Halle, Germany
| | - Sanela M Savic
- Faculty of Technology in Leskovac, University of Niš, 16000 Leskovac, Serbia
- R&D Sector, DCP Hemigal, 16000 Leskovac, Serbia
| | - Snezana Savic
- Department of Pharmaceutical Technology and Cosmetology, Faculty of Pharmacy, University of Belgrade, 11000 Belgrade, Serbia
| | - Guoping Lian
- Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, UK
- Unilever R&D Colworth, Sharnbrook, Bedford MK44 1LQ, UK
| | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, 1083 Budapest, Hungary
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Asbóth D, Bánfi B, Kocsis D, Erdő F. Rodent models of dermatological disorders. Ital J Dermatol Venerol 2024; 159:303-317. [PMID: 38287740 DOI: 10.23736/s2784-8671.23.07700-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2024]
Abstract
To assess the possible beneficial effects of drugs and drug candidates, different dermatological disease models are available in rodents. These models are able to mimic one or more characteristic features of the disorders, but not completely recapitulate the pathogenesis of the human skin diseases. Therefore, to improve the technology many new models have been developed both by genetic engineering and by chemical or physical induction. Currently the in vivo rodent models provide the physiologically most relevant approach to produce the pathology related to the majority of dermatological diseases. In this short review some widely used animal techniques (psoriasis, allergic contact dermatitis, atopic dermatitis, wound healing, melanoma and non-melanoma type skin cancers and UV erythema) are shown which are currently applied in pharmacological, pharmacokinetic, pharmaceutical and dermatological research. First the main points of the human pathomechanism are shown and afterwards the rodent models are briefly discussed. Finally critical evaluation is provided by the authors. However, according to the 3R rule the number of experimental animals is strongly suggested to be reduced, therefore the advanced in vitro and ex vivo techniques become more and more important contrary to in vivo preclinical methods also in dermatological research. As it is described in the outlook section, although the 2D/3D in vitro and skin on-a-chip techniques are promising and have many advantages they are not able to completely substitute the animal models in their vascular, immunological, secretory and neural complexity.
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Affiliation(s)
- Dorottya Asbóth
- Pediatric Dermatology Center, Szent János Center Hospital in North Buda, Budapest, Hungary
| | - Barnabás Bánfi
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
- Faculty of Science, Eötvös Loránd University, Budapest, Hungary
| | - Dorottya Kocsis
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary -
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Szederkényi G, Kocsis D, Vághy MA, Czárán D, Sasvári P, Lengyel M, Naszlady MB, Kreis F, Antal I, Csépányi-Kömi R, Erdő F. Mathematical modeling of transdermal delivery of topical drug formulations in a dynamic microfluidic diffusion chamber in health and disease. PLoS One 2024; 19:e0299501. [PMID: 38603673 PMCID: PMC11008853 DOI: 10.1371/journal.pone.0299501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/09/2024] [Indexed: 04/13/2024] Open
Abstract
Mathematical models of epidermal and dermal transport are essential for optimization and development of products for percutaneous delivery both for local and systemic indication and for evaluation of dermal exposure to chemicals for assessing their toxicity. These models often help directly by providing information on the rate of drug penetration through the skin and thus on the dermal or systemic concentration of drugs which is the base of their pharmacological effect. The simulations are also helpful in analyzing experimental data, reducing the number of experiments and translating the in vitro investigations to an in-vivo setting. In this study skin penetration of topically administered caffeine cream was investigated in a skin-on-a-chip microfluidic diffusion chamber at room temperature and at 32°C. Also the transdermal penetration of caffeine in healthy and diseased conditions was compared in mouse skins from intact, psoriatic and allergic animals. In the last experimental setup dexamethasone, indomethacin, piroxicam and diclofenac were examined as a cream formulation for absorption across the dermal barrier. All the measured data were used for making mathematical simulation in a three-compartmental model. The calculated and measured results showed a good match, which findings indicate that our mathematical model might be applied for prediction of drug delivery through the skin under different circumstances and for various drugs in the novel, miniaturized diffusion chamber.
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Affiliation(s)
- Gábor Szederkényi
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
- Systems and Control Laboratory, HUN-REN Institute for Computer Science and Control (SZTAKI), Budapest, Hungary
| | - Dorottya Kocsis
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Mihály A. Vághy
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Domonkos Czárán
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Péter Sasvári
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - Miléna Lengyel
- Department of Pharmaceutics, Semmelweis University, Budapest, Hungary
| | - Márton Bese Naszlady
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Fabiola Kreis
- Department of Physiology, Semmelweis University, Budapest, Hungary
| | - István Antal
- Department of Pharmaceutics, Semmelweis University, Budapest, Hungary
| | | | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
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Ponmozhi J, Dhinakaran S, Kocsis D, Iván K, Erdő F. Models for barrier understanding in health and disease in lab-on-a-chips. Tissue Barriers 2024; 12:2221632. [PMID: 37294075 PMCID: PMC11042069 DOI: 10.1080/21688370.2023.2221632] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/31/2023] [Indexed: 06/10/2023] Open
Abstract
The maintenance of body homeostasis relies heavily on physiological barriers. Dysfunction of these barriers can lead to various pathological processes, including increased exposure to toxic materials and microorganisms. Various methods exist to investigate barrier function in vivo and in vitro. To investigate barrier function in a highly reproducible manner, ethically, and high throughput, researchers have turned to non-animal techniques and micro-scale technologies. In this comprehensive review, the authors summarize the current applications of organ-on-a-chip microfluidic devices in the study of physiological barriers. The review covers the blood-brain barrier, ocular barriers, dermal barrier, respiratory barriers, intestinal, hepatobiliary, and renal/bladder barriers under both healthy and pathological conditions. The article then briefly presents placental/vaginal, and tumour/multi-organ barriers in organ-on-a-chip devices. Finally, the review discusses Computational Fluid Dynamics in microfluidic systems that integrate biological barriers. This article provides a concise yet informative overview of the current state-of-the-art in barrier studies using microfluidic devices.
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Affiliation(s)
- J. Ponmozhi
- Microfluidics Laboratory, Department of Mechanical Engineering, IPS Academy-Institute of Engineering Science, Indore, India
| | - S. Dhinakaran
- The Centre for Fluid Dynamics, Department of Mechanical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Dorottya Kocsis
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Kristóf Iván
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
| | - Franciska Erdő
- Faculty of Information Technology and Bionics, Pázmány Péter Catholic University, Budapest, Hungary
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Sahu N, Alam P, Ali A, Kumar N, Tyagi R, Madan S, Walia R, Saxena S. Optimization, In Vitro and Ex Vivo Assessment of Nanotransferosome Gels Infused with a Methanolic Extract of Solanum xanthocarpum for the Topical Treatment of Psoriasis. Gels 2024; 10:119. [PMID: 38391449 PMCID: PMC10888226 DOI: 10.3390/gels10020119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/25/2024] [Accepted: 01/29/2024] [Indexed: 02/24/2024] Open
Abstract
The goal of this investigation is to improve the topical delivery of medicine by preparing and maximizing the potential of a nanotransferosome gel infused with Solanum xanthocarpum methanolic extract (SXE) to provide localized and regulated distribution. Thin-film hydration was used to create SXE-infused nanotransferosomes (SXE-NTFs), and a Box-Behnken design was used to improve them. Phospholipon 90G (X1), cholesterol (X2) and sodium cholate (X3) were chosen as the independent variables, and their effects on vesicle size (Y1), polydispersity index (PDI) (Y2) and the percentage of entrapment efficiency (EE) (Y3) were observed both individually and in combination. For the SXE-NTFs, the vesicle size was 146.3 nm, the PDI was 0.2594, the EE was 82.24 ± 2.64%, the drug-loading capacity was 8.367 ± 0.07% and the drug release rate was 78.86 ± 5.24%. Comparing the antioxidant activity to conventional ascorbic acid, it was determined to be 83.51 ± 3.27%. Ex vivo permeation tests revealed that the SXE-NTF gel (82.86 ± 2.38%) considerably outperformed the SXE gel (35.28 ± 1.62%) in terms of permeation. In addition, it seemed from the confocal laser scanning microscopy (CLSM) picture of the Wistar rat's skin that the rhodamine-B-loaded SXE-NTF gel had a higher penetration capability than the control. Dermatokinetic studies showed that the SXE-NTF gel had a better retention capability than the SXE gel. According to the experimental results, the SXE-NTF gel is a promising and successful topical delivery formulation.
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Affiliation(s)
- Nilanchala Sahu
- Department of Pharmacy, Sharda School of Pharmacy, Sharda University, Greater Noida 201310, India
| | - Perwez Alam
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Asad Ali
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, M. B. Road, New Delhi 110062, India
| | - Neeraj Kumar
- Department of Pharmacognosy & Phytochemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, M. B. Road, New Delhi 110062, India
| | - Rama Tyagi
- Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida 201303, India
| | - Swati Madan
- Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida 201303, India
| | - Ramanpreet Walia
- Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida 201303, India
| | - Shikha Saxena
- Amity Institute of Pharmacy, Amity University Uttar Pradesh, Noida 201303, India
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Sung JH, Kim JJ. Recent advances in in vitro skin-on-a-chip models for drug testing. Expert Opin Drug Metab Toxicol 2023. [PMID: 37379024 DOI: 10.1080/17425255.2023.2227379] [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: 03/13/2023] [Revised: 05/10/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023]
Abstract
INTRODUCTION The skin is an organ that has the largest surface area and provides a barrier against external environment. While providing protection, it also interacts with other organs in the body and has implications in various diseases. Development of physiologically realistic in vitro models of the skin in the context of the whole body is important for studying these diseases, and will be a valuable tool for pharmaceutical, cosmetics, and food industry. AREA COVERED This article covers the basic background in skin structure, physiology, as well as drug metabolism in the skin, and dermatological diseases. We summarize various in vitro skin models currently available, and novel in vitro models based on organ-on-a-chip technology. We also explain the concept of multi-organ-on-a-chip and describe recent developments in this field aimed at recapitulating the interaction of the skin with other organs in the body. EXPERT OPINION Recent development in the organ-on-a-chip field has enabled the development of in vitro model systems that resemble human skin more closely than conventional models. In near future, we will be seeing various model systems that allow researchers to study complex diseases in a more mechanistic manner, which will help the development of new pharmaceuticals for such diseases.
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Affiliation(s)
- Jong Hwan Sung
- Department of Chemical Engineering, Hongik University, Seoul, Republic of Korea
| | - Jae Jung Kim
- Department of Chemical Engineering, Hongik University, Seoul, Republic of Korea
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7
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Alsamad F, Stamatas GN. Directional assessment of the skin barrier function in vivo. Skin Res Technol 2023; 29:e13346. [PMID: 37231932 PMCID: PMC10182387 DOI: 10.1111/srt.13346] [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: 03/23/2023] [Accepted: 05/02/2023] [Indexed: 05/27/2023]
Abstract
INTRODUCTION The fundamental function of the epidermis is to provide an inside-out barrier to water loss and an outside-in barrier to penetration of external irritants. Transepidermal water loss (TEWL) has been extensively used as a method of estimating the skin barrier quality, typically without any consideration of directionality. The validity of TEWL as an estimate of skin permeability to external substances has been controversial in vitro and in vivo. The aim of this work was to assess the relationship between TEWL and the penetration of a topically applied external marker (caffeine) in healthy skin in vivo before and following a challenge to the barrier. METHODS The skin barrier was challenged by application of aqueous solutions of mild cleanser products under occlusion for 3 h on the forearms of nine human participants. Skin barrier quality was evaluated before and after the challenge by measuring the TEWL rate and the permeated amount of topically applied caffeine using in vivo confocal Raman microspectroscopy. RESULTS No skin irritation was observed following the skin barrier challenge. TEWL rates and the caffeine penetrated amount in the stratum corneum after the challenge were not correlated. A weak correlation was observed when the changes were corrected to water-only treatment. TEWL values can be influenced by environmental conditions as well as the skin temperature and water content. CONCLUSIONS Measuring TEWL rates is not always representative of the outside-in barrier. TEWL may be useful in differentiating large changes in skin barrier function (e.g., between healthy and compromised skin) but is less sensitive to small variations following topical application of mild cleansers.
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Affiliation(s)
- Fanny Alsamad
- Essential Health Translational ScienceJohnson & Johnson Santé Beauté FranceIssy‐Les‐MoulineauxFrance
| | - Georgios N. Stamatas
- Essential Health Translational ScienceJohnson & Johnson Santé Beauté FranceIssy‐Les‐MoulineauxFrance
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Llorente X, Esteruelas G, Bonilla L, Agudelo MG, Filgaira I, Lopez-Ramajo D, Gong RC, Soler C, Espina M, García ML, Manils J, Pujol M, Sánchez-López E. Riluzole-Loaded Nanostructured Lipid Carriers for Hyperproliferative Skin Diseases. Int J Mol Sci 2023; 24:ijms24098053. [PMID: 37175765 PMCID: PMC10179084 DOI: 10.3390/ijms24098053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/12/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Nanocarriers, and especially nanostructured lipid carriers (NLC), represent one of the most effective systems for topical drug administration. NLCs are biodegradable, biocompatible and provide a prolonged drug release. The glutamate release inhibitor Riluzole (RLZ) is a drug currently used for amyotrophic lateral sclerosis (ALS), with anti-proliferative effects potentially beneficial for diseases with excessive cell turnover. However, RLZ possesses low water solubility and high light-sensibility. We present here optimized NLCs loaded with RLZ (RLZ-NLCs) as a potential topical treatment. RLZ-NLCs were prepared by the hot-pressure homogenization method using active essential oils as liquid lipids, and optimized using the design of experiments approach. RLZ-NLCs were developed obtaining optimal properties for dermal application (mean size below 200 nm, negative surface charge and high RLZ entrapment efficacy). In vitro release study demonstrates that RLZ-NLCs allow the successful delivery of RLZ in a sustained manner. Moreover, RLZ-NLCs are not angiogenic and are able to inhibit keratinocyte cell proliferation. Hence, a NLCs delivery system loading RLZ in combination with natural essential oils constitutes a promising strategy against keratinocyte hyperproliferative conditions.
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Affiliation(s)
- Xavier Llorente
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
| | - Gerard Esteruelas
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Lorena Bonilla
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Mariana Garnica Agudelo
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
| | - Ingrid Filgaira
- Departament de Patologia i Terapèutica Experimental and Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, 08907 Barcelona, Spain
| | - Daniel Lopez-Ramajo
- Departament de Patologia i Terapèutica Experimental and Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, 08907 Barcelona, Spain
| | - Ruoyi C Gong
- Departament de Patologia i Terapèutica Experimental and Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, 08907 Barcelona, Spain
| | - Concepció Soler
- Departament de Patologia i Terapèutica Experimental and Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, 08907 Barcelona, Spain
| | - Marta Espina
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Maria Luisa García
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Joan Manils
- Departament de Patologia i Terapèutica Experimental and Hospital Universitari de Bellvitge-Bellvitge Institute for Biomedical Research, 08907 Barcelona, Spain
- Serra Húnter Programme, Immunology Unit, Department of Pathology and Experimental Therapy, School of Medicine, Universitat de Barcelona, Feixa Llarga s/n, 08907 L'Hospitalet de Llobregat, Spain
| | - Montserrat Pujol
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
| | - Elena Sánchez-López
- Department of Pharmacy, Pharmaceutical Technology and Physical Chemistry, Faculty of Pharmacy, University of Barcelona, 08028 Barcelona, Spain
- Institute of Nanoscience and Nanotechnology (IN2UB), University of Barcelona, 08028 Barcelona, Spain
- Unit of Synthesis and Biomedical Applications of Peptides, IQAC-CSIC, 08034 Barcelona, Spain
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Mai Y, Ouyang Y, Yu M, Qin Y, Girardi M, Saltzman WM, Cocco E, Zhao C, Yu L, Jia Y, Xiao L, Dou L, Deng W, Liu Y, Xie J, Deng Y. Topical formulation based on disease-specific nanoparticles for single-dose cure of psoriasis. J Control Release 2022; 349:354-366. [PMID: 35817278 DOI: 10.1016/j.jconrel.2022.07.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/09/2022] [Accepted: 07/05/2022] [Indexed: 10/17/2022]
Abstract
First-line treatments for mild to moderate psoriasis are typically topical formulations containing corticosteroids, however, the therapeutic efficacy of these formulations is compromised by limited penetration and skin retention. Even more challenging, off-target corticosteroids are known to adversely affect healthy skin, including induction of epidermal and dermal atrophy. Here, we report a nanoparticle-based topical formulation that cures psoriasis in a single dose, but leaves healthy skin intact. Specifically, we developed tris(hydroxymethyl)aminomethane-modified bioadhesive nanoparticles (Tris-BNPs) that exploit the high permeability characteristic of psoriasis to penetrate only psoriatic skin but not the healthy skin. Furthermore, as Tris-BNPs diffuse and penetrate into the epidermis, the Tris molecules slowly diffuse away, exposing the aldehyde groups of BNPs, which can bind to amine groups present within lesional skin, leading to long local retention of BNPs in lesions of psoriatic skin. The accumulated BNPs within lesions release corticosteroids over a ~ 3 day period to maintain local drug concentration above the therapeutic level. In addition to deeper penetration and longer retention compared with commercial psoriasis treatments, the topical applied Tris-BNPs were not affected by sweating, humidity, or active wiping due to their preferential accumulation between the stratum corneum and the basal cells of the epidermis. Overall, Tris-BNP as a topical formulation hold promise to overcome the limitations of current psoriasis treatment.
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Affiliation(s)
- Yang Mai
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yaqi Ouyang
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Mian Yu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yujia Qin
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Michael Girardi
- Department of Dermatology, Yale University, 333 Cedar Street, New Haven, CT 06520, USA
| | - W Mark Saltzman
- Department of Biomedical Engineering, Yale University, 55 Prospect Street, New Haven, CT 06511, USA
| | - Emiliano Cocco
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL 33136, USA
| | - Chao Zhao
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL 35487, USA
| | - Liu Yu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yizhen Jia
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Lingyun Xiao
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Liu Dou
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Wenbin Deng
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China
| | - Yang Liu
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.
| | - Julin Xie
- Department of Burns, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China.
| | - Yang Deng
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou 510275, China.
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