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Liu T, Liu Y, Zhao X, Zhang L, Wang W, Bai D, Liao Y, Wang Z, Wang M, Zhang J. Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application. Bioact Mater 2024; 32:502-513. [PMID: 38026438 PMCID: PMC10643103 DOI: 10.1016/j.bioactmat.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/09/2023] [Accepted: 10/01/2023] [Indexed: 12/01/2023] Open
Abstract
Copper peptides (GHK-Cu) are a powerful hair growth promoter with minimal side effects when compared with minoxidil and finasteride; however, challenges in delivering GHK-Cu topically limits their non-invasive applications. Using theoretical calculations and pseudo-ternary phase diagrams, we designed and constructed a thermodynamically stable ionic liquid (IL)-based microemulsion (IL-M), which integrates the high drug solubility of ILs and high skin permeability of microemulsions, thus improving the local delivery of copper peptides by approximately three-fold while retaining their biological function. Experiments in mice validated the effectiveness of our proposed IL-M system. Furthermore, the exact effects of the IL-M system on the expression of growth factors, such as vascular endothelial growth factor, were revealed, and it was found that microemulsion increased the activation of the Wnt/β-catenin signaling pathway, which includes factors involved in hair growth regulation. Overall, the safe and non-invasive IL microemulsion system developed in this study has great potential for the clinical treatment of hair loss.
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Affiliation(s)
- Tianqi Liu
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- Research Center of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Ying Liu
- Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Xiaoyu Zhao
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Liguo Zhang
- Harbin Voolga Technology Co., Ltd., Harbin, 150070, China
| | - Wei Wang
- Harbin Voolga Technology Co., Ltd., Harbin, 150070, China
| | - De Bai
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- Research Center of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Ya Liao
- Shenzhen Shinehigh Innovation Technology Co., Ltd., Shenzhen, 518055, China
| | - Zhenyuan Wang
- Shenzhen Shinehigh Innovation Technology Co., Ltd., Shenzhen, 518055, China
| | - Mi Wang
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- Research Center of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
| | - Jiaheng Zhang
- State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
- Research Center of Printed Flexible Electronics, School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, 518055, China
- Shenzhen Shinehigh Innovation Technology Co., Ltd., Shenzhen, 518055, China
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Costa C, Cavaco-Paulo A, Matamá T. Mapping hair follicle-targeted delivery by particle systems: What has science accomplished so far? Int J Pharm 2021; 610:121273. [PMID: 34763036 DOI: 10.1016/j.ijpharm.2021.121273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/21/2021] [Accepted: 11/02/2021] [Indexed: 12/18/2022]
Abstract
The importance of the hair follicle in the process of cutaneous drug penetration has been established since this skin appendage was recognized as an entry point for topically applied substances. A comprehensive review on the hair follicle as a target per se is here provided, exploring the current knowledge on both targeted regions and delivery systems that take advantage of this permeation route. The follicular penetration is a complex process, whose effectiveness and efficiency strongly depends on a diversity of different factors including follicular density and size, activity status of hair follicles and physicochemical properties of the topically applied substances. Nanocarriers represent a heterogeneous assembly of molecules organized into particles and they have revolutionized drug delivery in several areas of medicine, pharmacology and cosmetics. As they possess an inherent ability to use the follicular route, they are reviewed here having in perspective the hair follicle zones that they are able to reach as reported. In this way, a follicular road map for the different delivery systems was compiled to assist as a guiding tool for those that have interest in the development and/or application of such delivery systems for hair and skin treatment or care.
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Affiliation(s)
- Cristiana Costa
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - Artur Cavaco-Paulo
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Teresa Matamá
- CEB - Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
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Observation of the Expression of Vascular Endothelial Growth Factor and the Potential Effect of Promoting Hair Growth Treated with Chinese Herbal BeauTop. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6667011. [PMID: 33680060 PMCID: PMC7904352 DOI: 10.1155/2021/6667011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 01/13/2021] [Accepted: 02/05/2021] [Indexed: 11/18/2022]
Abstract
Despite minoxidil and finasteride already being approved by the Food and Drug Administration (FDA) for the treatment of hair loss, it is important to identify new and innovative treatments for hair loss, such as looking for a solution in Chinese herbal medicine. One such treatment to consider is BeauTop (BT), whose primary ingredients include Panax japonicus (T.Nees), C.A. Mey. (Araliaceae), Astragalus membranaceus (Fisch) Bunge (Fabaceae), Angelica sinensis (Oliv.) Diels (Apiaceae), Ligustrum lucidum W.T. Aiton (Oleaceae), Rehmannia glutinosa (Gaertn.) DC. (Plantaginaceae), and Eclipta prostrata (L.) L. (Compositae). The aim of this study was to evaluate whether BT can promote hair growth in C57BL/6 mice and to investigate hair coverage, the expression of vascular endothelial growth factor (VEFG), and the numbers of hair follicles in growth phase after oral administration. A total of 12 C57BL/6 mice were divided into two groups: control group and treatment group BT. BT was administered orally as an extract at a volume of 0.6 g/kg. The control group was treated with distilled water. Each group was treated once a day for 12 consecutive days. To observe the expression of VEGF distribution, the number of hair follicles and the hair coverage were examined on days 4, 8, and 12. By comparing the treatment group and control group, we found that VEGF in the BT group on day 8 presented with a higher area percentage than the control group (p value = 0.003). Hair follicle counting results showed that the BT group was significantly higher than the control group on day 8 (p value = 0.031). Furthermore, hair coverage was shown to be significantly increased in the treatment group BT on day 8 (p value = 0.013). Taken together, these results suggest that Chinese medicine (BT) possesses the potential effect of promoting hair growth through VEGF expression. VEGF is considered the most important mediator for the process of angiogenesis involved in hair growth development.
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Ahmadi-Ashtiani HR, Bishe P, Baldisserotto A, Buso P, Manfredini S, Vertuani S. Stem Cells as a Target for the Delivery of Active Molecules to Skin by Topical Administration. Int J Mol Sci 2020; 21:ijms21062251. [PMID: 32213974 PMCID: PMC7139485 DOI: 10.3390/ijms21062251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/22/2020] [Accepted: 03/23/2020] [Indexed: 12/14/2022] Open
Abstract
Cutaneous stem cells, gained great attention in the field of regenerative medicine as a potential therapeutic target for the treatment of skin and hair disorders and various types of skin cancers. Cutaneous stem cells play a key role in several processes like the renovation of skin structures in the condition of homeostasis and after injuries, the hair follicle growth and the reconstruction and production of melanocytes. Thus, gaining effective access to skin stem cells for therapeutic interventions that often involve active molecules with non-favorable characteristics for skin absorption is a valuable achievement. The topical route with high patient compliance and several other benefits is gaining increasing importance in basic and applied research. However, the major obstacle for topical drug delivery is the effective barrier provided by skin against penetration of the vast majority of exogenous molecules. The research in this field is focusing more and more on new strategies to circumvent and pass this barrier effectively. In this article the existing approaches are discussed considering physical and chemical methods along with utilization of novel drug delivery systems to enhance penetration of drugs to the skin. In particular, attention has been paid to studies finalized to the delivery of molecules to cutaneous stem cells with the aim of transferring signals, modulating their metabolic program, inducing physiological modifications and stem cell gene therapy.
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Affiliation(s)
- Hamid-Reza Ahmadi-Ashtiani
- Department of Basic Sciences, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran 194193311, Iran;
- Cosmetic, Hygienic and Detergent Sciences and Technology Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran 19419311, Iran
- Correspondence: (H.-R.A.-A.); (A.B.); Tel.: +39-21-226400515 (H.-R.A.-A.); +39-0532-455258 (A.B.)
| | - Parisa Bishe
- Department of Basic Sciences, Faculty of Pharmacy, Tehran Medical Sciences, Islamic Azad University, Tehran 194193311, Iran;
- Cosmetic, Hygienic and Detergent Sciences and Technology Research Center, Tehran Medical Sciences, Islamic Azad University, Tehran 19419311, Iran
| | - Anna Baldisserotto
- Department of Life Sciences and Biotechnology, Faculty of Medicine, Pharmacy and Prevention, Master Course in Cosmetic Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (P.B.); (S.M.); (S.V.)
- Correspondence: (H.-R.A.-A.); (A.B.); Tel.: +39-21-226400515 (H.-R.A.-A.); +39-0532-455258 (A.B.)
| | - Piergiacomo Buso
- Department of Life Sciences and Biotechnology, Faculty of Medicine, Pharmacy and Prevention, Master Course in Cosmetic Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (P.B.); (S.M.); (S.V.)
| | - Stefano Manfredini
- Department of Life Sciences and Biotechnology, Faculty of Medicine, Pharmacy and Prevention, Master Course in Cosmetic Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (P.B.); (S.M.); (S.V.)
| | - Silvia Vertuani
- Department of Life Sciences and Biotechnology, Faculty of Medicine, Pharmacy and Prevention, Master Course in Cosmetic Sciences, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (P.B.); (S.M.); (S.V.)
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Roberts MS, Mohammed Y, Pastore MN, Namjoshi S, Yousef S, Alinaghi A, Haridass IN, Abd E, Leite-Silva VR, Benson H, Grice JE. Topical and cutaneous delivery using nanosystems. J Control Release 2016; 247:86-105. [PMID: 28024914 DOI: 10.1016/j.jconrel.2016.12.022] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Accepted: 12/20/2016] [Indexed: 12/11/2022]
Abstract
The goal of topical and cutaneous delivery is to deliver therapeutic and other substances to a desired target site in the skin at appropriate doses to achieve a safe and efficacious outcome. Normally, however, when the stratum corneum is intact and the skin barrier is uncompromised, this is limited to molecules that are relatively lipophilic, small and uncharged, thereby excluding many potentially useful therapeutic peptides, proteins, vaccines, gene fragments or drug-carrying particles. In this review we will describe how nanosystems are being increasingly exploited for topical and cutaneous delivery, particularly for these previously difficult substances. This is also being driven by the development of novel technologies, which include minimally invasive delivery systems and more precise fabrication techniques. While there is a vast array of nanosystems under development and many undergoing advanced clinical trials, relatively few have achieved full translation to clinical practice. This slow uptake may be due, in part, to the need for a rigorous demonstration of safety in these new nanotechnologies. Some of the safety aspects associated with nanosystems will be considered in this review.
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Affiliation(s)
- M S Roberts
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia; School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia.
| | - Y Mohammed
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia
| | - M N Pastore
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - S Namjoshi
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia
| | - S Yousef
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia
| | - A Alinaghi
- School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, Australia
| | - I N Haridass
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia; School of Pharmacy, Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, WA, Australia
| | - E Abd
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia
| | - V R Leite-Silva
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia
| | - Hae Benson
- School of Pharmacy, Curtin Health Innovation Research Institute, Curtin University, GPO Box U1987, Perth, WA, Australia
| | - J E Grice
- Therapeutics Research Centre, School of Medicine, The University of Queensland, Translational Research Institute, QLD, 4102, Australia
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6
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Ashtikar M, Nagarsekar K, Fahr A. Transdermal delivery from liposomal formulations – Evolution of the technology over the last three decades. J Control Release 2016; 242:126-140. [DOI: 10.1016/j.jconrel.2016.09.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2016] [Revised: 08/25/2016] [Accepted: 09/08/2016] [Indexed: 12/11/2022]
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7
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Vogt A, Wischke C, Neffe AT, Ma N, Alexiev U, Lendlein A. Nanocarriers for drug delivery into and through the skin — Do existing technologies match clinical challenges? J Control Release 2016; 242:3-15. [DOI: 10.1016/j.jconrel.2016.07.027] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 07/13/2016] [Accepted: 07/17/2016] [Indexed: 12/31/2022]
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8
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Vij M, Natarajan P, Pattnaik BR, Alam S, Gupta N, Santhiya D, Sharma R, Singh A, Ansari KM, Gokhale RS, Natarajan VT, Ganguli M. Non-invasive topical delivery of plasmid DNA to the skin using a peptide carrier. J Control Release 2016; 222:159-68. [DOI: 10.1016/j.jconrel.2015.12.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 11/25/2015] [Accepted: 12/12/2015] [Indexed: 01/18/2023]
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9
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Sato Y, Nakamura T, Yamada Y, Akita H, Harashima H. Multifunctional enveloped nanodevices (MENDs). ADVANCES IN GENETICS 2015; 88:139-204. [PMID: 25409606 DOI: 10.1016/b978-0-12-800148-6.00006-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
It is anticipated that nucleic acid medicines will be in widespread use in the future, since they have the potential to cure diseases based on molecular mechanisms at the level of gene expression. However, intelligent delivery systems are required to achieve nucleic acid therapy, since they can perform their function only when they reach the intracellular site of action. We have been developing a multifunctional envelope-type nanodevice abbreviated as MEND, which consists of functional nucleic acids as a core and lipid envelope, and can control not only biodistribution but also the intracellular trafficking of nucleic acids. In this chapter, we review the development and evolution of the MEND by providing several successful examples, including the R8-MEND, the KALA-MEND, the MITO-Porter, the YSK-MEND, and the PALM.
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Affiliation(s)
- Yusuke Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo City, Hokkaido, Japan
| | - Takashi Nakamura
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo City, Hokkaido, Japan
| | - Yuma Yamada
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo City, Hokkaido, Japan
| | - Hidetaka Akita
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo City, Hokkaido, Japan
| | - Hideyoshi Harashima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo City, Hokkaido, Japan
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10
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Yu G, Jie K, Huang F. Supramolecular Amphiphiles Based on Host–Guest Molecular Recognition Motifs. Chem Rev 2015; 115:7240-303. [DOI: 10.1021/cr5005315] [Citation(s) in RCA: 766] [Impact Index Per Article: 85.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Guocan Yu
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Kecheng Jie
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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11
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Vogt A, Hadam S, Deckert I, Schmidt J, Stroux A, Afraz Z, Rancan F, Lademann J, Combadiere B, Blume-Peytavi U. Hair follicle targeting, penetration enhancement and Langerhans cell activation make cyanoacrylate skin surface stripping a promising delivery technique for transcutaneous immunization with large molecules and particle-based vaccines. Exp Dermatol 2014; 24:73-5. [DOI: 10.1111/exd.12589] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2014] [Indexed: 02/02/2023]
Affiliation(s)
- Annika Vogt
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
- UMR S CR7; Centre d¹Immunologie et de Maladies Infectieuses Paris (Cimi-Paris); UPMC University Paris 06; Sorbonne Universités; Paris France
- INSERM U1135; Cimi-Paris; Paris France
| | - Sabrina Hadam
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Iliane Deckert
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Julia Schmidt
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Andrea Stroux
- Institute for Biometry and Clinical Epidemiology; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Zahra Afraz
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Fiorenza Rancan
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Jürgen Lademann
- Department of Dermatology and Allergy; Center of Experimental and Applied Cutaneous Physiology; Charité-Universitätsmedizin Berlin; Berlin Germany
| | - Behazine Combadiere
- UMR S CR7; Centre d¹Immunologie et de Maladies Infectieuses Paris (Cimi-Paris); UPMC University Paris 06; Sorbonne Universités; Paris France
- INSERM U1135; Cimi-Paris; Paris France
| | - Ulrike Blume-Peytavi
- Department of Dermatology and Allergy; Clinical Research Center for Hair and Skin Science; Charité-Universitätsmedizin Berlin; Berlin Germany
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12
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Vogt A, Blume-Peytavi U. Selective hair therapy: bringing science to the fiction. Exp Dermatol 2014; 23:83-6. [PMID: 24387677 DOI: 10.1111/exd.12318] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2013] [Indexed: 01/17/2023]
Abstract
Investigations on carrier-based drug delivery systems for higher selectivity in hair therapy have clearly evolved from dye release and model studies to highly sophisticated approaches, many of which specifically tackle hair indications and the delivery of hair-relevant molecules. Here, we group recent hair disease-oriented work into efforts towards (i) improved delivery of conventional drugs, (ii) delivery of novel drug classes, for example biomolecules and (iii) targeted delivery on the cellular/molecular level. Considering the solid foundation of experimental work, it does not take a large step outside the current box of thinking to follow the idea of using large carriers (>500 nm, unlikely to penetrate as a whole) for follicular penetration, retention and protection of sensitive compounds. Yet, reports on particles <200 nm being internalized by keratinocytes and dendritic cells at sites of barrier disruption (e.g., hair follicles) combined with recent advances in nanodermatology add interesting new facets to the possibilities carrier technologies could offer, for example, unprecedented levels of selectivity. The authors provide thought-provoking ideas on how smart delivery technologies and advances in our molecular understanding of hair pathophysiology could result in a whole new era of hair therapeutics. As the field still largely remains in preclinical investigation, determined efforts towards production of medical grade material and truly translational work are needed to demonstrate surplus value of carrier systems for clinical applications.
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Affiliation(s)
- Annika Vogt
- Clinical Research Center for Hair and Skin Science, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Berlin, Germany
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13
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A novel nonviral gene delivery system: multifunctional envelope-type nano device. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2014; 119:197-230. [PMID: 19343308 DOI: 10.1007/10_2008_40] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
In this review we introduce a new concept for developing a nonviral gene delivery system which we call "Programmed Packaging." Based on this concept, we succeeded in developing a multifunctional envelope-type nano device (MEND), which exerts high transfection activities equivalent to those of an adenovirus in a dividing cell. The use of MEND has been extended to in vivo applications. PEG/peptide/DOPE ternary conjugate (PPD)-MEND, a new in vivo gene delivery system for the targeting of tumor cells that dissociates surface-modified PEG in tumor tissue by matrix metalloproteinase (MMP) and exerts significant transfection activities, was developed. In parallel with the development of MEND, a quantitative gene delivery system, Confocal Image-assisted 3-dimensionally integrated quantification (CIDIQ), also was developed. This method identified the rate-limiting step of the nonviral gene delivery system by comparing it with adenoviral-mediated gene delivery. The results of this analysis provide a new direction for the development of rational nonviral gene delivery systems.
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14
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Hair multiplication with dermal papilla like tissue containing human dermal papilla cells. BIOTECHNOL BIOPROC E 2014. [DOI: 10.1007/s12257-013-0632-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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15
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Dou C, Lay F, Ansari AM, Rees DJ, Ahmed AK, Kovbasnjuk O, Matsangos AE, Du J, Hosseini SM, Steenbergen C, Fox-Talbot K, Tabor AT, Williams JA, Liu L, Marti GP, Harmon JW. Strengthening the skin with topical delivery of keratinocyte growth factor-1 using a novel DNA plasmid. Mol Ther 2014; 22:752-61. [PMID: 24434934 PMCID: PMC3982499 DOI: 10.1038/mt.2014.2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 12/23/2013] [Indexed: 12/25/2022] Open
Abstract
Fragile skin, susceptible to decubitus ulcers and incidental trauma, is a problem particularly for the elderly and for those with spinal cord injury. Here, we present a simple approach to strengthen the skin by the topical delivery of keratinocyte growth factor-1 (KGF-1) DNA. In initial feasibility studies with the novel minimalized, antibiotic-free DNA expression vector, NTC8385-VA1, the reporter genes luciferase and enhanced green fluorescent protein were delivered. Transfection was documented when luciferase expression significantly increased after transfection. Microscopic imaging of enhanced green fluorescent protein-transfected skin showed green fluorescence in hair follicles, hair shafts, and dermal and superficial epithelial cells. With KGF-1 transfection, KGF-1 mRNA level and protein production were documented with quantitative reverse transcriptase-polymerase chain reaction and immunohistochemistry, respectively. Epithelial thickness of the transfected skin in the KGF group was significantly increased compared with the control vector group (26 ± 2 versus 16 ± 4 µm) at 48 hours (P = 0.045). Dermal thickness tended to be increased in the KGF group (255 ± 36 versus 162 ± 16 µm) at 120 hours (P = 0.057). Biomechanical assessment showed that the KGF-1-treated skin was significantly stronger than control vector-transfected skin. These findings indicate that topically delivered KGF-1 DNA plasmid can increase epithelial thickness and strength, demonstrating the potential of this approach to restore compromised skin.
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Affiliation(s)
- Chunqing Dou
- 1] Department of Hepatobiliary Surgery, The First Affiliated Hospital of Chinese PLA General Hospital, Beijing, China [2] Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Frank Lay
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Amir Mehdi Ansari
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Donald J Rees
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ali Karim Ahmed
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Olga Kovbasnjuk
- Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Aerielle E Matsangos
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Junkai Du
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Sayed Mohammad Hosseini
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Charles Steenbergen
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Karen Fox-Talbot
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | | | - Lixin Liu
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Guy P Marti
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - John W Harmon
- Department of Surgery and Hendrix Burn/Wound Laboratory, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Knorr F, Patzelt A, Richter H, Schanzer S, Sterry W, Lademann J. Approach towards developing a novel procedure to selectively quantify topically applied substances in the hair follicles of the model tissue porcine ear skin. Exp Dermatol 2013; 22:417-8. [DOI: 10.1111/exd.12113] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Fanny Knorr
- Department of Dermatology, Venerology and Allergology; Center of Experimental and Applied Cutaneous Physiology (CCP); Charité - Universitätsmedizin Berlin; Berlin; Germany
| | - Alexa Patzelt
- Department of Dermatology, Venerology and Allergology; Center of Experimental and Applied Cutaneous Physiology (CCP); Charité - Universitätsmedizin Berlin; Berlin; Germany
| | - Heike Richter
- Department of Dermatology, Venerology and Allergology; Center of Experimental and Applied Cutaneous Physiology (CCP); Charité - Universitätsmedizin Berlin; Berlin; Germany
| | - Sabine Schanzer
- Department of Dermatology, Venerology and Allergology; Center of Experimental and Applied Cutaneous Physiology (CCP); Charité - Universitätsmedizin Berlin; Berlin; Germany
| | - Wolfram Sterry
- Department of Dermatology, Venerology and Allergology; Center of Experimental and Applied Cutaneous Physiology (CCP); Charité - Universitätsmedizin Berlin; Berlin; Germany
| | - Juergen Lademann
- Department of Dermatology, Venerology and Allergology; Center of Experimental and Applied Cutaneous Physiology (CCP); Charité - Universitätsmedizin Berlin; Berlin; Germany
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Abstract
The application of RNA interference to treat disease is an important yet challenging concept in modern medicine. In particular, small interfering RNA (siRNA) have shown tremendous promise in the treatment of cancer. However, siRNA show poor pharmacological properties, which presents a major hurdle for effective disease treatment especially through intravenous delivery routes. In response to these shortcomings, a variety of nanoparticle carriers have emerged, which are designed to encapsulate, protect, and transport siRNA into diseased cells. To be effective as carrier vehicles, nanoparticles must overcome a series of biological hurdles throughout the course of delivery. As a result, one promising approach to siRNA carriers is dynamic, versatile nanoparticles that can perform several in vivo functions. Over the last several years, our research group has investigated hydrogel nanoparticles (nanogels) as candidate delivery vehicles for therapeutics, including siRNA. Throughout the course of our research, we have developed higher order architectures composed entirely of hydrogel components, where several different hydrogel chemistries may be isolated in unique compartments of a single construct. In this Account, we summarize a subset of our experiences in the design and application of nanogels in the context of drug delivery, summarizing the relevant characteristics for these materials as delivery vehicles for siRNA. Through the layering of multiple, orthogonal chemistries in a nanogel structure, we can impart multiple functions to the materials. We consider nanogels as a platform technology, where each functional element of the particle may be independently tuned to optimize the particle for the desired application. For instance, we can modify the shell compartment of a vehicle for cell-specific targeting or evasion of the innate immune system, whereas other compartments may incorporate fluorescent probes or regulate the encapsulation and release of macromolecular therapeutics. Proof-of-principle experiments have demonstrated the utility of multifunctional nanogels. For example, using a simple core/shell nanogel architecture, we have recently reported the delivery of siRNA to chemosensitize drug resistant ovarian cancer cells. Ongoing efforts have resulted in several advanced hydrogel structures, including biodegradable nanogels and multicompartment spheres. In parallel, our research group has studied other properties of the nanogels, including their behavior in confined environments and their ability to translocate through small pores.
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Affiliation(s)
- Michael H. Smith
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
| | - L. Andrew Lyon
- School of Chemistry and Biochemistry and the Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States
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Xiao G, Li X, Kumar A, Cui Z. Transcutaneous DNA immunization following waxing-based hair depilation elicits both humoral and cellular immune responses. Eur J Pharm Biopharm 2012; 82:212-7. [PMID: 22771558 DOI: 10.1016/j.ejpb.2012.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 06/21/2012] [Accepted: 06/25/2012] [Indexed: 12/11/2022]
Abstract
Previously, we showed that transcutaneous (TC) DNA immunization by applying plasmid DNA onto a mouse skin area wherein the hair follicles were induced into growth stage by plucking the hair using warm waxing induced strong and functional antigen-specific antibody responses. In the present study, using plasmids that encode β-galactosidase gene or ovalbumin (OVA) gene, we showed that this mode of TC DNA immunization not only induced specific antibody responses, but also induced antigen-specific cytotoxic T lymphocyte responses. In fact, TC DNA immunization using a plasmid that encodes OVA gene prevented the growth of OVA-expressing B16-OVA tumor cells in the immunized mice. Moreover, we provided additional evidence supporting that hair follicles are essential for this mode of TC DNA immunization.
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Affiliation(s)
- Gang Xiao
- The University of Texas at Austin, College of Pharmacy, Austin, TX 78723, USA
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Tong YC, Yu TY, Chang SF, Liaw J. Nanopolymeric micelle effect on the transdermal permeability, the bioavailability and gene expression of plasmid. Mol Pharm 2011; 9:111-20. [PMID: 22142416 DOI: 10.1021/mp200342h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study attempts to investigate the transdermal permeability, the bioavailability and gene expression of plasmid formulated with nonionic poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) (PEO-PPO-PEO) polymeric micelles (PM). Dynamic light scattering (DLS) and atomic force microscopy (AFM) were used to analyze the PM formulated pCMV-Lac Z (P/PM) containing the gene for β-galactosidase (β-Gal) driven by cytomegalovirus early promoter. Franz diffusion cell was used for in vitro transdermal permeability analysis. Real-time PCR was used to quantify the permeated plasmid in vitro and in vivo. β-Gal activity assay was performed to evaluate transgene expression in vivo. The size of P/PM was ~50 nm with round shape. PM significantly enhanced the in vitro transdermal permeability of plasmid in a direction- and temperature-dependent manner. Following transdermal application of P/PM, higher area under the curve (AUC(P/PM): 98.34 h·ng/mL) and longer half-life of plasmid were detected compared with that of plasmid alone (AUC(P): 10.12 h·ng/mL). Additionally, the β-Gal activity was significantly increased in skin, stomach, brain and spinal cord at both 48 and 72 h after P/PM application and in testis and spleen at 72 h postapplication. In conclusion, PM formulation enhanced the permeation of plasmid through skin into blood circulation, increasing its absorption and the transgene expression in various tissues.
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Affiliation(s)
- Yaw-Chong Tong
- College of Pharmacy, Taipei Medical University, Taipei, Taiwan
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Sloat BR, Kiguchi K, Xiao G, DiGiovanni J, Maury W, Cui Z. Transcutaneous DNA immunization following waxing-based hair depilation. J Control Release 2011; 157:94-102. [PMID: 21907253 DOI: 10.1016/j.jconrel.2011.08.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Accepted: 08/24/2011] [Indexed: 10/17/2022]
Abstract
Transcutaneous DNA immunization is an attractive immunization approach. Previously, we reported that transcutaneous immunization by applying plasmid DNA onto a skin area wherein the hair follicles had been induced into growth stage by 'cold' waxing-based hair plucking significantly enhanced the resultant immune responses. In the present study, using a plasmid that encodes the Bacillus anthracis protective antigen (PA63) gene fragment, it was shown that the anti-PA63 antibody responses induced by applying the plasmid onto a skin area where the hair was plucked by 'warm' waxing were significantly stronger than by 'cold' waxing, very likely because the 'warm' waxing-based hair depilation significantly i) enhanced the uptake (or retention) of the plasmid in the application area and ii) enhanced the expression of the transfected gene in the follicular and interfollicular epidermis in the skin. The antibody response induced by transcutaneous DNA immunization was hair cycle dependent, because the plasmid needed to be applied within 5days after the hair plucking to induce a strong antibody response. The antibody responses were not affected by whether the expressed PA63 protein, as an antigen, was secreted or cell surface bound. Finally, this strategy of enhancing the immune responses induced by transcutaneous DNA immunization following 'warm' waxing-based hair depilation was not limited to the PA63 as an antigen, because immunization with a plasmid that encodes the HIV-1 env gp160 gene induced a strong anti-gp160 response as well. Transcutaneous DNA immunization by modifying the hair follicle cycle may hold a great promise in inducing strong and functional immune responses.
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Affiliation(s)
- Brian R Sloat
- The University of Texas at Austin, College of Pharmacy, Pharmaceutics Division, Austin, Texas 78712, USA
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21
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Yu Z, Chung WG, Sloat BR, Löhr CV, Weiss R, Rodriguez BL, Li X, Cui Z. The extent of the uptake of plasmid into the skin determines the immune responses induced by a DNA vaccine applied topically onto the skin. J Pharm Pharmacol 2011; 63:199-205. [PMID: 21235583 DOI: 10.1111/j.2042-7158.2010.01219.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Non-invasive immunization by application of plasmid DNA topically onto the skin is an attractive immunization approach. However, the immune responses induced are generally weak. Previously, we showed that the antibody responses induced by topical DNA vaccine are significantly enhanced when hair follicles in the application area are induced into the anagen (growth) stage by hair plucking. In the present study, we further investigated the mechanism of immune enhancement. METHODS Three different methods--hair plucking or treatment with retinoic acid (RA) or O-tetradecanoylphorbol-13-acetate (TPA)--were used to induce mice hair follicles into the anagen stage before they were dosed with a β-galactosidase-encoding plasmid, and the specific antibody responses induced were evaluated. KEY FINDINGS The hair-plucking method was more effective at enhancing the resultant antibody responses. Treatment with RA or TPA caused more damage to the skin and induced more severe local inflammation than hair plucking. However, hair plucking was most effective at enhancing the uptake or retention of the DNA in the application area. CONCLUSIONS The uptake of plasmid DNA in the application area correlated with the antibody responses induced by a topically applied DNA.
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Affiliation(s)
- Zhen Yu
- Department of Pharmaceutical Sciences, College of Pharmacy Department of Biomedical Sciences, College of Veterinary Medicine, Oregon State University, Corvallis, OR, USA
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Mahdipour E, Mace KA. Hox transcription factor regulation of adult bone-marrow-derived cell behaviour during tissue repair and regeneration. Expert Opin Biol Ther 2011; 11:1079-90. [PMID: 21513461 DOI: 10.1517/14712598.2011.579096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Bone marrow offers a valuable source of stem/progenitor cells that contribute to the repair of injured tissues. Failure in the function of these cells results in delayed or reduced tissue repair. Identification of factors that can correct these defects is critical to treating the underlying dysfunction. Notably, homeobox (Hox) transcription factors have been identified as having significant effects on BMDC behaviour, including differentiation, migration and adhesion in injured tissue, and may provide a basis for future therapies. AREAS COVERED Hox protein regulation of bone-marrow-derived cell (BMDC) differentiation, factors that influence BMDC behaviour in response to injury, the effects of the diabetic environment on BMDCs, methods that can be used to reprogramme BMDCs, and the use of Hox transcription factors to correct BMDC behaviour. EXPERT OPINION Hox gene therapy has been successfully employed to change cell behaviour using ex vivo 'reprogramming' strategies overexpressing selected Hox genes in BMDCs to direct the fate of these cells to the desired cell type, promoting tissue repair.
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Affiliation(s)
- Elahe Mahdipour
- University of Manchester, Healing Foundation Centre, Faculty of Life Sciences, Oxford Road, Manchester M13 9PT, UK
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Özbaş-Turan S, Akbuğa J. Plasmid DNA-loaded chitosan/TPP nanoparticles for topical gene delivery. Drug Deliv 2011; 18:215-22. [DOI: 10.3109/10717544.2010.544688] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Chen X, Zhang Y, Liu C, Zhang Y, Zhou X, Zhou T, Mao Y, Kan B, Wei YQ, Li J. Retinoic acid and dimethyl sulfoxide promote efficient delivery of transgenes to mouse skin by topically transdermal penetration. Drug Deliv 2010; 17:385-90. [DOI: 10.3109/10717541003762862] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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25
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Optimization of the reconstruction of dermal papilla like tissues employing umbilical cord mesenchymal stem cells. BIOTECHNOL BIOPROC E 2010. [DOI: 10.1007/s12257-009-3050-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Trauer S, Patzelt A, Otberg N, Knorr F, Rozycki C, Balizs G, Büttemeyer R, Linscheid M, Liebsch M, Lademann J. Permeation of topically applied caffeine through human skin--a comparison of in vivo and in vitro data. Br J Clin Pharmacol 2010; 68:181-6. [PMID: 19694736 DOI: 10.1111/j.1365-2125.2009.03463.x] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIMS Due to ethical reasons, in vivo penetration studies are not applicable at all stages of development of new substances. Therefore, the development of appropriate in vitro methods is essential, as well as the comparison of the obtained in vivo and in vitro data, in order to identify their transferability. The aim of the present study was to investigate the follicular penetration of caffeine in vitro and to compare the data with the in vivo results determined previously under similar conditions. METHODS The Follicular Closing Technique (FCT) represents a method to investigate the follicular penetration selectively. In the present study, FCT was combined with the Franz diffusion cell in order to differentiate between follicular and intercellular penetration of caffeine into the receptor medium in vitro. Subsequently, the results were compared with the data obtained in an earlier study investigating follicular and intercellular penetration of caffeine in vivo. RESULTS The comparison of the data revealed that the in vitro experiments were valuable for the investigation of the follicular penetration pathway, which contributed in vivo as well as in vitro to approximately 50% of the total penetration, whereas the kinetics of caffeine penetration were shown to be significantly different. CONCLUSIONS The combination of FCT with the Franz diffusion cell represents a valuable method to investigate follicular penetration in vitro. Nevertheless, in vivo experiments should not be abandoned as in vitro, structural changes of skin occur and blood flow and metabolism are absent, probably accounting for reduced penetration rates in vitro.
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Affiliation(s)
- Sindy Trauer
- Department of Dermatology, Charité-Universitätsmedizin Berlin, Berlin 10117, Germany
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Yoo BY, Shin YH, Yoon HH, Seo YK, Park JK. Hair follicular cell/organ culture in tissue engineering and regenerative medicine. Biochem Eng J 2010. [DOI: 10.1016/j.bej.2009.09.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Wosicka H, Cal K. Targeting to the hair follicles: Current status and potential. J Dermatol Sci 2010; 57:83-9. [DOI: 10.1016/j.jdermsci.2009.12.005] [Citation(s) in RCA: 114] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 12/06/2009] [Accepted: 12/11/2009] [Indexed: 11/29/2022]
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LI L, TANG L, BARANOV E, YANG M, AMOH Y, KATSUOKA K, HOFFMAN RM. Selective induction of apoptosis in the hamster flank sebaceous gland organ by a topical liposome 5-α-reductase inhibitor: A treatment strategy for acne. J Dermatol 2010; 37:156-62. [DOI: 10.1111/j.1346-8138.2009.00778.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Abstract
Millions of people die each year from infectious disease, with a main stumbling block being our limited ability to deliver vaccines to optimal sites in the body. Specifically, effective methods to deliver vaccines into outer skin and mucosal layers--sites with immunological, physical and practical advantages that cannot be targeted via traditional delivery methods--are lacking. This chapter investigates the challenge for physical delivery approaches that are primarily needle-free. We examine the skin's structural and immunogenic properties in the context of the physical cell targeting requirements of the viable epidermis, and we review selected current physical cell targeting technologies engineered to meet these needs: needle and syringe, diffusion patches, liquid jet injectors, and microneedle arrays/patches. We then focus on biolistic particle delivery: we first analyze engineering these systems to meet demanding clinical needs, we then examine the interaction of biolistic devices with the skin, focusing on the mechanical interactions of ballistic impact and cell death, and finally we discuss the current clinical outcomes of one key application of engineered delivery devices--DNA vaccines.
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Affiliation(s)
- Mark A F Kendall
- Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Building 75-Cnr of College and Cooper Road The University of Queensland Brisbane, Brisbane, QLD4072, Australia.
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Mahe B, Vogt A, Liard C, Duffy D, Abadie V, Bonduelle O, Boissonnas A, Sterry W, Verrier B, Blume-Peytavi U, Combadiere B. Nanoparticle-Based Targeting of Vaccine Compounds to Skin Antigen-Presenting Cells By Hair Follicles and their Transport in Mice. J Invest Dermatol 2009; 129:1156-64. [DOI: 10.1038/jid.2008.356] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Wu X, Guy R. Applications of nanoparticles in topical drug delivery and in cosmetics. J Drug Deliv Sci Technol 2009. [DOI: 10.1016/s1773-2247(09)50080-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Richards JB, Yuan X, Geller F, Waterworth D, Bataille V, Glass D, Song K, Waeber G, Vollenweider P, Aben KKH, Kiemeney LA, Walters B, Soranzo N, Thorsteinsdottir U, Kong A, Rafnar T, Deloukas P, Sulem P, Stefansson H, Stefansson K, Spector TD, Mooser V. Male-pattern baldness susceptibility locus at 20p11. Nat Genet 2008; 40:1282-4. [PMID: 18849991 DOI: 10.1038/ng.255] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2008] [Accepted: 09/11/2008] [Indexed: 11/09/2022]
Abstract
We conducted a genome-wide association study for androgenic alopecia in 1,125 men and identified a newly associated locus at chromosome 20p11.22, confirmed in three independent cohorts (n = 1,650; OR = 1.60, P = 1.1 x 10(-14) for rs1160312). The one man in seven who harbors risk alleles at both 20p11.22 and AR (encoding the androgen receptor) has a sevenfold-increased odds of androgenic alopecia (OR = 7.12, P = 3.7 x 10(-15)).
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Affiliation(s)
- J Brent Richards
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
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Birchall J, Coulman S, Pearton M, Allender C, Brain K, Anstey A, Gateley C, Wilke N, Morrissey A. Cutaneous DNA delivery and gene expression in ex vivo human skin explants via wet-etch microfabricated microneedles. J Drug Target 2008; 13:415-21. [PMID: 16308210 DOI: 10.1080/10611860500383705] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Micro-needle arrays increase skin permeability by forming channels through the outer physical barrier, without stimulating pain receptors populating the underlying dermis. It was postulated that micro-needle arrays could facilitate transfer of DNA to human skin epidermis for cutaneous gene therapy applications. Platinum-coated "wet-etch" silicon micro-needles were shown to be of appropriate dimensions to create micro-conduits, approximately 50 microm in diameter, extending through the stratum corneum (SC) and viable epidermis. Following optimisation of skin explant culturing techniques and confirmation of tissue viability, the ability of the micro-needles to mediate gene expression was demonstrated using the beta-galactosidase reporter gene. Preliminary studies confirmed localised delivery, cellular internalisation and subsequent gene expression of pDNA following micro-needle disruption of skin. A combination of this innovative gene delivery platform and the ex vivo skin culture model will be further exploited to optimise cutaneous DNA delivery and address fundamental questions regarding gene expression in skin.
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Affiliation(s)
- James Birchall
- Welsh School of Pharmacy, Cardiff University, Gene Delivery Research Group, Cardiff CF10 3XF, UK.
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Jimenez JJ, Roberts SM, Mejia J, Mauro LM, Munson JW, Elgart GW, Connelly EA, Chen Q, Zou J, Goldenberg C, Voellmy R. Prevention of chemotherapy-induced alopecia in rodent models. Cell Stress Chaperones 2008; 13:31-8. [PMID: 18347939 PMCID: PMC2666212 DOI: 10.1007/s12192-007-0005-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Revised: 07/18/2007] [Accepted: 07/19/2007] [Indexed: 11/30/2022] Open
Abstract
Alopecia (hair loss) is experienced by thousands of cancer patients every year. Substantial-to-severe alopecia is induced by anthracyclines (e.g., adriamycin), taxanes (e.g., taxol), alkylating compounds (e.g., cyclophosphamide), and the topisomerase inhibitor etoposide, agents that are widely used in the treatment of leukemias and breast, lung, ovarian, and bladder cancers. Currently, no treatment appears to be generally effective in reliably preventing this secondary effect of chemotherapy. We observed in experiments using different rodent models that localized administration of heat or subcutaneous/intradermal injection of geldanamycin or 17-(allylamino)-17-demethoxygeldanamycin induced a stress protein response in hair follicles and effectively prevented alopecia from adriamycin, cyclophosphamide, taxol, and etoposide. Model tumor therapy experiments support the presumption that such localized hair-saving treatment does not negatively affect chemotherapy efficacy.
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Affiliation(s)
| | - Stephen M. Roberts
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, University of Florida, Gainesville, FL USA
| | - Jessica Mejia
- Department of Biochemistry and Molecular Biology, University of Miami, Miami, FL USA
| | - Lucia M. Mauro
- Department of Biochemistry and Molecular Biology, University of Miami, Miami, FL USA
| | - John W. Munson
- Center for Environmental and Human Toxicology, Department of Physiological Sciences, University of Florida, Gainesville, FL USA
| | - George W. Elgart
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL USA
| | - Elizabeth Alvarez Connelly
- Department of Dermatology and Cutaneous Surgery, University of Miami, Miami, FL USA
- Department of Pediatrics, University of Miami, Miami, FL USA
| | - Qingbin Chen
- School of Pharmaceutical Science, Zhongshan Medical College, Sun Yat-sen University, Guangzhou, People’s Republic of China
| | - Jiangying Zou
- Guangzhou Institute of Biomedicine and Health, Guangzhou, People’s Republic of China
| | | | - Richard Voellmy
- Department of Biochemistry and Molecular Biology, University of Miami, Miami, FL USA
- HSF Pharmaceuticals S.A., Av. des Cerisiers 39B, 1009 Pully, Switzerland
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Shaker DS, Sloat BR, Le UM, Löhr CV, Yanasarn N, Fischer KA, Cui Z. Immunization by Application of DNA Vaccine onto a Skin Area Wherein the Hair Follicles Have Been Induced into Anagen-onset Stage. Mol Ther 2007; 15:2037-43. [PMID: 17700542 DOI: 10.1038/sj.mt.6300286] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
An attractive approach to immunization is to apply DNA vaccine topically onto the skin. However, it is important to ensure that a strong immune response is induced without disrupting the skin stratum corneum. The hair follicles have been shown to be the major portal of entry for DNA applied onto the skin, and it has been reported that the transfection of hair follicle cells occurs mainly at the onset of a new growing stage of the hair cycle. Using an anthrax protective antigen (PA) protein-encoding plasmid in mice, we demonstrated that the anti-PA immune responses were significantly stronger when the hair follicles in the application area were induced into anagen-onset stage than when in telogen stage. The anti-PA antibodies enabled the immunized mice to survive a lethal dose of anthrax lethal toxin challenge. The enhanced immune responses can be partially attributed to the enhanced antigen gene expression and plasmid DNA uptake in the skin area wherein the hair follicles were induced into anagen-onset stage. Moreover, the moderate dermal inflammation associated with the anagen induction may also have contributed to the enhancement of the resultant immune response. This represents a novel approach to enhancing the immune response induced by a topically applied DNA vaccine.
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Affiliation(s)
- Dalia S Shaker
- Department of Pharmaceutical Sciences, College of Pharmacy, Oregon State University, Corvallis, Oregon 97331, USA
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37
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Kikuchi Y, Tamai K, Kaneda Y. Cutaneous gene delivery. J Dermatol Sci 2007; 50:87-98. [PMID: 17765482 DOI: 10.1016/j.jdermsci.2007.07.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2007] [Revised: 07/10/2007] [Accepted: 07/20/2007] [Indexed: 12/25/2022]
Abstract
Over the past decade, many approaches to transferring genes into the skin have been investigated. However, most such approaches have been specifically aimed against genodermatosis, and have not produced sufficient results. The goal of such research is to develop a method in which genes are transferred easily, efficiently and stably into keratinocytes, especially into keratinocyte stem cells, and in which the transgene expression persists without a reaction from the host immune response. Although accidental development of cancer has occurred in trials of gene therapy for X-linked severe combined immunodeficiency (X-SCID), resulting in slowing of the progress of this research, the lessons of these setbacks have been applied to further research. Moreover, combined with the techniques acquired from tissue engineering, recent developments in our knowledge about stem cells will lead to new treatments for genodermatoses. The present review summarizes the methods by which therapeutic genes can be transferred into keratinocytes, with discussion of how gene transfer efficiency can be improved, with particular emphasis on disruption of the skin barrier function. It concludes with discussion of the challenges and prospects of keratinocyte gene therapy, in terms of achieving efficient and long-lasting therapeutic effects.
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Affiliation(s)
- Yasushi Kikuchi
- Division of Gene Therapy Science, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka, Suita, Osaka 565-0871, Japan
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Khalil IA, Kogure K, Futaki S, Hama S, Akita H, Ueno M, Kishida H, Kudoh M, Mishina Y, Kataoka K, Yamada M, Harashima H. Octaarginine-modified multifunctional envelope-type nanoparticles for gene delivery. Gene Ther 2007; 14:682-9. [PMID: 17268535 PMCID: PMC1847622 DOI: 10.1038/sj.gt.3302910] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study describes a multifunctional envelope-type nano device (MEND) that mimics an envelope-type virus based on a novel packaging strategy. MEND particles contain a DNA core packaged into a lipid envelope modified with an octaarginine peptide. The peptide mediates internalization via macropinocytosis, which avoids lysosomal degradation. MEND-mediated transfection of a luciferase expression plasmid achieved comparable efficiency to adenovirus-mediated transfection, with lower associated cytotoxicity. Furthermore, topical application of MEND particles containing constitutively active bone morphogenetic protein (BMP) type IA receptor (caBmpr1a) gene had a significant impact on hair growth in vivo. These data demonstrate that MEND is a promising non-viral gene delivery system that may provide superior results to existing non-viral gene delivery technologies.
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Affiliation(s)
- IA Khalil
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
- The Core Research for Evolutional Science and Technology (CREST), Shibuya-ku, Tokyo, Japan
| | - K Kogure
- The Core Research for Evolutional Science and Technology (CREST), Shibuya-ku, Tokyo, Japan
| | - S Futaki
- Precursory Research for Embryonic Science and Technology, Japan Science and Technology Agency (JST), Shibuya, Shibuya-ku, Tokyo, Japan
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, Japan
| | - S Hama
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
- The Core Research for Evolutional Science and Technology (CREST), Shibuya-ku, Tokyo, Japan
| | - H Akita
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
- The Core Research for Evolutional Science and Technology (CREST), Shibuya-ku, Tokyo, Japan
| | - M Ueno
- Faculty of Pharmaceutical Sciences, Toyama Medical and Pharmaceutical University, Sugitani, Toyama, Japan
| | - H Kishida
- Yamada Research Unit, RIKEN Brain Science Institute, Saitama, Japan
| | - M Kudoh
- Yamada Research Unit, RIKEN Brain Science Institute, Saitama, Japan
| | - Y Mishina
- National Institute of Environmental Health, Research Triangle Park, NC, USA
| | - K Kataoka
- Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
| | - M Yamada
- Yamada Research Unit, RIKEN Brain Science Institute, Saitama, Japan
| | - H Harashima
- Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, Hokkaido, Japan
- The Core Research for Evolutional Science and Technology (CREST), Shibuya-ku, Tokyo, Japan
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39
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Intravital imaging of fluorescent markers and FRET probes by DNA tattooing. BMC Biotechnol 2007; 7:2. [PMID: 17201912 PMCID: PMC1779781 DOI: 10.1186/1472-6750-7-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Accepted: 01/03/2007] [Indexed: 11/13/2022] Open
Abstract
Background Advances in fluorescence microscopy and mouse transgenesis have made it possible to image molecular events in living animals. However, the generation of transgenic mice is a lengthy process and intravital imaging requires specialized knowledge and equipment. Here, we report a rapid and undemanding intravital imaging method using generally available equipment. Results By DNA tattooing we transfect keratinocytes of living mice with DNA encoding fluorescent biosensors. Subsequently, the behavior of individual cells expressing these biosensors can be visualized within hours and using conventional microscopy equipment. Using this "instant transgenic" model in combination with a corrected coordinate system, we followed the in vivo behavior of individual cells expressing either FRET- or location-based biosensors for several days. The utility of this approach was demonstrated by assessment of in vivo caspase-3 activation upon induction of apoptosis. Conclusion This "instant skin transgenic" model can be used to follow the in vivo behavior of individual cells expressing either FRET- or location-based probes for several days after tattooing and provides a rapid and inexpensive method for intravital imaging in murine skin.
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40
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Amoh Y, Li L, Katsuoka K, Hoffman RM. Chemotherapy Targets the Hair-Follicle Vascular Network but Not the Stem Cells. J Invest Dermatol 2007; 127:11-5. [PMID: 16841031 DOI: 10.1038/sj.jid.5700486] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Chemotherapy-induced alopecia is a major problem in clinical oncology. Doxorubicin, a widely used cancer chemotherapy drug, induces disruption of the hair cycle and subsequent alopecia. We show in this report that doxorubicin causes disruption of the hair-follicle-associated blood vessel network resulting in a greatly reduced density of these blood vessels. Dystrophic hair follicles were also observed with abnormal melanogenesis in the mice treated with doxorubicin. Visualization of the effect of doxorubicin on hair-follicle angiogenesis was made possible by the use of transgenic mice in which green fluorescent protein was driven by regulatory elements of the nestin gene (ND-GFP). In these transgenic mice, the hair-follicle stem cells and the follicle structure as well as the blood vessels associated with the hair follicles express ND-GFP. The hair-follicle stem cells did not appear to be affected by doxorubicin, which may explain why hair regrows after chemotherapy. These results suggest that inhibition of hair-follicle-associated angiogenesis by doxorubicin may be an important factor in hair-follicle dystrophy associated with chemotherapy-induced alopecia. The ND-GFP mouse model is thus useful for the study of the role of angiogenesis in the hair-follicle cycle and the effect of drugs on processes associated with chemotherapy-induced alopecia.
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41
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Abstract
Wound repair involves the sequential interaction of various cell types, extracellular matrix molecules, and soluble mediators. During the past 10 years, much new information on signals controlling wound cell behavior has emerged. This knowledge has led to a number of novel therapeutic strategies. In particular, the local delivery of pluripotent growth factor molecules to the injured tissue has been intensively investigated over the past decade. Limited success of clinical trails indicates that a crucial aspect of the growth factor wound healing strategy is the effective delivery of these polypeptides to the wound site. A molecular approach in which genetically modified cells synthesize and deliver the desired growth factor in regulated fashion has been used to overcome the limitations associated with the (topical) application of recombinant growth factor proteins. We have summarized the molecular and cellular basis of repair mechanisms and their failure, and we give an overview of techniques and studies applied to gene transfer in tissue repair.
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Affiliation(s)
- Sabine A Eming
- Department of Dermatology, University of Cologne, D-50937 Cologne, Germany
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42
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Branski LK, Pereira CT, Herndon DN, Jeschke MG. Gene therapy in wound healing: present status and future directions. Gene Ther 2006; 14:1-10. [PMID: 16929353 DOI: 10.1038/sj.gt.3302837] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gene therapy was traditionally considered a treatment modality for patients with congenital defects of key metabolic functions or late-stage malignancies. The realization that gene therapy applications were much vaster has opened up endless opportunities for therapeutic genetic manipulations, especially in the skin and external wounds. Cutaneous wound healing is a complicated, multistep process with numerous mediators that act in a network of activation and inhibition processes. Gene delivery in this environment poses a particular challenge. Numerous models of gene delivery have been developed, including naked DNA application, viral transfection, high-pressure injection, liposomal delivery, and more. Of the various methods for gene transfer, cationic cholesterol-containing liposomal constructs are emerging as a method with great potential for non-viral gene transfer in the wound. This article aims to review the research on gene therapy in wound healing and possible future directions in this exciting field.
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Affiliation(s)
- L K Branski
- Department of Surgery, The University of Texas Medical Branch, Shriners Hospitals for Children, Galveston, TX 77550, USA
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43
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Han A, Poulos GA, Mirmirani P. Expanding research and development of novel agents for the treatment and prevention of chemotherapy-induced alopecia. Expert Opin Ther Pat 2006. [DOI: 10.1517/13543776.16.6.773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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44
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Abstract
A challenge in epidermal DNA vaccination is the efficient and targeted delivery of polynucleotides to immunologically sensitive Langerhans cells. This paper investigates this particular challenge for physical delivery approaches. The skin immunology and material properties are examined in the context of the physical cell targeting requirements of the viable epidermis. Selected current physical cell targeting technologies engineered to meet these needs are examined: needle and syringe; diffusion patches; liquid jet injectors; microneedle arrays/patches; and biolistic particle injection. The operating methods and relative performance of these approaches are discussed, with a comment on potential future developments and technologies.
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Affiliation(s)
- Mark Kendall
- The PowderJect Centre for Gene and Drug Delivery Research, Department of Engineering Science, University of Oxford, 43 Banbury Road, Oxford OX2 6PE, United Kingdom.
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45
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Abstract
The hair follicle is a skin appendage with a complex structure containing many cell types that produce highly specialised proteins. The hair follicle is in a continuous cycle: anagen is the hair growth phase, catagen the involution phase and telogen is the resting phase. The follicle offers many potential therapeutic targets. Hoffman and colleagues have pioneered hair-follicle-specific targeting using liposomes to deliver small and large molecules, including genes. They have also pioneered ex vivo hair-follicle targeting with continued expression of the introduced gene following transplantation. Recently, it has been discovered that hair follicle stem cells are highly pluripotent and can form neurons, glial cells and other cell types, and this has suggested that hair follicle stem cells may serve as gene therapy targets for regenerative medicine.
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46
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Chen Y, Shen Y, Guo X, Zhang C, Yang W, Ma M, Liu S, Zhang M, Wen LP. Transdermal protein delivery by a coadministered peptide identified via phage display. Nat Biotechnol 2006; 24:455-60. [PMID: 16565728 DOI: 10.1038/nbt1193] [Citation(s) in RCA: 165] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2005] [Accepted: 01/03/2006] [Indexed: 11/09/2022]
Abstract
Efficient transdermal drug delivery of large hydrophilic drugs is challenging. Here we report that the short synthetic peptide, ACSSSPSKHCG, identified by in vivo phage display, facilitated efficient transdermal protein drug delivery through intact skin. Coadministration of the peptide and insulin to the abdominal skin of diabetic rats resulted in elevated systemic levels of insulin and suppressed serum glucose levels for at least 11 h. Significant systemic bioavailability of human growth hormone was also achieved when topically coadministered with the peptide. The transdermal-enhancing activity of the peptide was sequence specific and dose dependent, did not involve direct interaction with insulin and enabled penetration of insulin into hair follicles beyond a depth of 600 microm. Time-lapse studies suggested that the peptide creates a transient opening in the skin barrier to enable macromolecular drugs to reach systemic circulation.
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Affiliation(s)
- Yongping Chen
- Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science & Technology of China, Hefei, Anhui 230027, China
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47
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Lee H, Koehler DR, Pang CY, Levine RH, Ng P, Palmer DJ, Quinton PM, Hu J. Gene delivery to human sweat glands: a model for cystic fibrosis gene therapy. Gene Ther 2006; 12:1752-60. [PMID: 16034452 DOI: 10.1038/sj.gt.3302587] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gene therapy vectors are mostly studied in cultured cells, rodents, and sometimes in non-human primates, but it is useful to test them in human tissue prior to clinical trials. In this study, we investigated the possibility of using human sweat glands as a model for testing cystic fibrosis (CF) gene therapy vectors. Human sweat glands are relatively easy to obtain from skin biopsy, and can be tested for CFTR function. Using patients' sweat glands could provide a safe model to study the efficacy of CF gene therapy. As the first step to explore using sweat glands as a model for CF gene therapy, we examined various ex vivo gene delivery methods for a helper-dependent adenovirus (HD-Ad) vector. Gene delivery to sweat glands in skin organ culture was studied by topical application, intradermal injection or submerged culture. We found that transduction efficiency can be enhanced by pretreating isolated sweat glands with dispase, which suggests that the basement membrane is a critical barrier to gene delivery by adenoviral vectors. Using this approach, we showed that Cftr could be efficiently delivered to and expressed by the epithelial cells of sweat glands with our helper-dependent adenoviral vector containing cytokeratin 18 regulatory elements. Based on this study we propose that sweat glands might be used as an alternative model to study CF gene therapy in humans.
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Affiliation(s)
- H Lee
- Research Institute, The Hospital for Sick Children, Toronto, Canada
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48
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Sugiyama-Nakagiri Y, Akiyama M, Shimizu H. Hair follicle stem cell-targeted gene transfer and reconstitution system. Gene Ther 2006; 13:732-7. [PMID: 16397506 DOI: 10.1038/sj.gt.3302709] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Gene transfer to hair follicle (HF) epithelium is an attractive approach for not only treating skin diseases, but also many systemic disorders. In this study, we attempted to develop a gene transfer system for HF epithelial stem cells to maximize the beneficial therapeutic effects. For persistent and stable transgene expression in HF stem cells, we transferred retroviral vectors encoding reporter genes into cultured HF stem cells. In addition, these cells were mixed with cultured dermal papilla cells and transplanted on to immunodeficient mice. We succeeded in reconstituting HFs and their appendages in which these cells harbored a transgene reporter. The transgene expression was observed in all skin epithelial compartments including the HF epithelium, sebaceous gland and epidermis. In addition, transgene expression was observed for at least 6 months. This HF stem cell-targeted gene transfer and reconstitution system provides reliable gene-function analysis and gene therapy.
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Affiliation(s)
- Y Sugiyama-Nakagiri
- Department of Dermatology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
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Freyschmidt-Paul P, Happle R, Hoffman R. [Alopecia areata in animal models--new insights into pathogenesis and treatment of a T cell-mediated autoimmune disorder]. J Dtsch Dermatol Ges 2005; 2:260-73. [PMID: 16285322 DOI: 10.1046/j.1610-0387.2003.03553.x-i1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Alopecia areata is a common disease, but for ethical reasons it seems difficult to perform large-scale studies to elucidate the pathogenesis and to develop new therapeutic approaches in man. It is therefore helpful to develop appropriate animal models. The Dundee experimental bald rat (DEBR) and the C3H/HeJ mouse are well-established animal models for alopecia areata and can be used for the study of genetic aspects, pathogenesis and therapy of the disease. In C3H/HeJ mice alopecia areata can be experimentally induced by grafting lesional skin from an affected mouse to a histocompatible recipient which offers the possibility to study the influence of various factors on the development of the disease. Studies on the C3H/HeJ mouse and the DEBR have corroborated the concept that alopecia areata is a T-cell mediated autoimmune disease and various steps and aspects of the pathogenesis have been elucidated. Based on this knowledge new therapeutic options may be developed such as inhibition of lymphocyte-homing by an anti-CD44v10 antibody, or inhibition of costimulation by monoclonal antibodies. Therapeutic studies in the C3H/HeJ mouse and the DEBR suggest that alopecia areata can be treated by topical tacrolimus but treatment in humans may only be successful after development of an improved vehicle that facilitates penetration of tacrolimus down to the hair bulb. Current investigations in mice are designed to elucidate the mechanisms how contact sensitizers act in the treatment of alopecia areata, and this will hopefully lead to the development of more specific approaches based on the beneficial effect of contact sensitizers.
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50
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Abstract
Hair cosmetic agents are preparations intended for placing in contact with the hair and scalp, with the purpose of cleansing, promoting attractiveness, altering appearance, and/or protecting them in order to maintain them in good condition. Current shampoo formulations and styling products are tailored to the variations associated with age, gender, hair quality, hair care habit, and specific problems relating to the superficial condition of the scalp. The great amount of variables to be accounted for, some of them contradictory and hard to bring into accord, makes adequate product formulation a challenge and requires continuous research. Recent hair cosmetic developments include topical hair growth stimulants, photoprotectors, and anti-aging compounds. The advances in molecular technology have opened the avenue to the study of the molecular basis of hair growth and its deviations, as well as of the aging process. The discovery of potential pharmacological targets and the development of selective and effective delivery systems following topical application indicate further strategies for maintenance of healthy hair and scalp in the young and old.
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Affiliation(s)
- Ralph M Trüeb
- Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland.
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