1
|
Choi E, Song J, Lee Y, Jeong Y, Jang W. Prioritizing susceptibility genes for the prognosis of male-pattern baldness with transcriptome-wide association study. Hum Genomics 2024; 18:34. [PMID: 38566255 PMCID: PMC10985920 DOI: 10.1186/s40246-024-00591-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 02/27/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Male-pattern baldness (MPB) is the most common cause of hair loss in men. It can be categorized into three types: type 2 (T2), type 3 (T3), and type 4 (T4), with type 1 (T1) being considered normal. Although various MPB-associated genetic variants have been suggested, a comprehensive study for linking these variants to gene expression regulation has not been performed to the best of our knowledge. RESULTS In this study, we prioritized MPB-related tissue panels using tissue-specific enrichment analysis and utilized single-tissue panels from genotype-tissue expression version 8, as well as cross-tissue panels from context-specific genetics. Through a transcriptome-wide association study and colocalization analysis, we identified 52, 75, and 144 MPB associations for T2, T3, and T4, respectively. To assess the causality of MPB genes, we performed a conditional and joint analysis, which revealed 10, 11, and 54 putative causality genes for T2, T3, and T4, respectively. Finally, we conducted drug repositioning and identified potential drug candidates that are connected to MPB-associated genes. CONCLUSIONS Overall, through an integrative analysis of gene expression and genotype data, we have identified robust MPB susceptibility genes that may help uncover the underlying molecular mechanisms and the novel drug candidates that may alleviate MPB.
Collapse
Affiliation(s)
- Eunyoung Choi
- Department of Life Sciences, Dongguk University, Seoul, 04620, Republic of Korea
| | - Jaeseung Song
- Department of Life Sciences, Dongguk University, Seoul, 04620, Republic of Korea
| | - Yubin Lee
- Department of Life Sciences, Dongguk University, Seoul, 04620, Republic of Korea
| | - Yeonbin Jeong
- Department of Life Sciences, Dongguk University, Seoul, 04620, Republic of Korea
| | - Wonhee Jang
- Department of Life Sciences, Dongguk University, Seoul, 04620, Republic of Korea.
| |
Collapse
|
2
|
Lee S, Ohn J, Kang BM, Hwang ST, Kwon O. Activation of mitochondrial aldehyde dehydrogenase 2 promotes hair growth in human hair follicles. J Adv Res 2023:S2090-1232(23)00351-X. [PMID: 37972887 DOI: 10.1016/j.jare.2023.11.014] [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: 04/09/2023] [Revised: 11/06/2023] [Accepted: 11/12/2023] [Indexed: 11/19/2023] Open
Abstract
INTRODUCTION Hair loss is a common phenomenon associated with various environmental and genetic factors. Mitochondrial dysfunction-induced oxidative stress has been recognized as a crucial determinant of hair follicle (HF) biology. Aldehyde dehydrogenase 2 (ALDH2) mitigates oxidative stress by detoxifying acetaldehyde. This study investigated the potential role of ALDH2 modulation in HF function and hair growth promotion. OBJECTIVES To evaluate the effects of ALDH2 activation on oxidative stress in HFs and hair growth promotion. METHODS The modulatory role of ALDH2 on HFs was investigated using an ALDH2 activator. ALDH2 expression in human HFs was evaluated through in vitro immunofluorescence staining. Ex vivo HF organ culture was employed to assess hair shaft elongation, while the fluorescence probe 2',7'- dichlorodihydrofluorescein diacetate was utilized to detect reactive oxygen species (ROS). An in vivo mouse model was used to determine whether ALDH2 activation induces anagen. RESULTS During the anagen phase, ALDH2 showed significantly higher intensity than that in the telogen phase, and its expression was primarily localized along the outer layer of HFs. ALDH2 activation promoted anagen phase induction by reducing ROS levels and enhancing reactive aldehyde clearance, which indicated that ALDH2 functions as a ROS scavenger within HFs. Moreover, ALDH2 activation upregulated Akt/GSK 3β/β-catenin signaling in HFs. CONCLUSIONS Our findings highlight the hair growth promotion effects of ALDH2 activation in HFs and its potential as a promising therapeutic approach for promoting anagen induction.
Collapse
Affiliation(s)
- Seunghee Lee
- Department of Dermatology, Seoul National University College of Medicine, Seoul 03080, South Korea; Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, South Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul 03080, South Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, South Korea
| | - Jungyoon Ohn
- Department of Dermatology, Seoul National University College of Medicine, Seoul 03080, South Korea; Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, South Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul 03080, South Korea
| | - Bo Mi Kang
- Department of Dermatology, Seoul National University College of Medicine, Seoul 03080, South Korea; Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, South Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul 03080, South Korea
| | | | - Ohsang Kwon
- Department of Dermatology, Seoul National University College of Medicine, Seoul 03080, South Korea; Laboratory of Cutaneous Aging and Hair Research, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, South Korea; Institute of Human-Environment Interface Biology, Medical Research Center, Seoul National University, Seoul 03080, South Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, South Korea.
| |
Collapse
|
3
|
Palmer MA, Dias IHK, Smart E, Benatzy Y, Haslam IS. Cholesterol homeostasis in hair follicle keratinocytes is disrupted by impaired ABCA5 activity. Biochim Biophys Acta Mol Cell Biol Lipids 2023:159361. [PMID: 37348644 DOI: 10.1016/j.bbalip.2023.159361] [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: 09/30/2022] [Revised: 05/27/2023] [Accepted: 06/09/2023] [Indexed: 06/24/2023]
Abstract
The importance of cholesterol in hair follicle biology is underscored by its links to the pathogenesis of alopecias and hair growth disorders. Reports have associated defects in ABCA5, a membrane transporter, with altered keratinocyte cholesterol distribution in individuals with a form of congenital hypertrichosis, yet the biological basis for this defect in hair growth remains unknown. This study aimed to determine the impact of altered ABCA5 activity on hair follicle keratinocyte behaviour. Primary keratinocytes isolated from the outer root sheath of plucked human hair follicles were utilised as a relevant cell model. Following exogenous cholesterol loading, an increase in ABCA5 co-localisation to intracellular organelles was seen. Knockdown of ABCA5 revealed a dysregulation in cholesterol homeostasis, with LXR agonism leading to partial restoration of the homeostatic response. Filipin staining and live BODIPY cholesterol immunofluorescence microscopy revealed a reduction in endo-lysosomal cholesterol following ABCA5 knockdown. Analysis of oxysterols showed a significant increase in the fold change of 25-hydroxycholesterol and 7-β-hydroxycholesterol following cholesterol loading in ORS keratinocytes, after ABCA5 knockdown. These data suggest a role for ABCA5 in the intracellular compartmentalisation of free cholesterol in primary hair follicle keratinocytes. The loss of normal homeostatic response, following the delivery of excess cholesterol after ABCA5 knockdown, suggests an impact on LXR-mediated transcriptional activity. The loss of ABCA5 in the hair follicle could lead to impaired endo-lysosomal cholesterol transport, impacting pathways known to influence hair growth. This avenue warrants further investigation.
Collapse
Affiliation(s)
- Megan A Palmer
- School of Applied Sciences, University of Huddersfield, Huddersfield, UK; Faculty of Medicine, Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | | | - Eleanor Smart
- Centre for Dermatology Research, University of Manchester, UK
| | - Yvonne Benatzy
- Faculty of Medicine, Institute of Biochemistry I, Goethe-University Frankfurt, Frankfurt, Germany
| | - Iain S Haslam
- School of Applied Sciences, University of Huddersfield, Huddersfield, UK.
| |
Collapse
|
4
|
Ścieżyńska A, Łuszczyński K, Radziszewski M, Komorowski M, Soszyńska M, Krześniak N, Shevchenko K, Lutyńska A, Malejczyk J. Role of the ABCA4 Gene Expression in the Clearance of Toxic Vitamin A Derivatives in Human Hair Follicle Stem Cells and Keratinocytes. Int J Mol Sci 2023; 24:ijms24098275. [PMID: 37175983 PMCID: PMC10179012 DOI: 10.3390/ijms24098275] [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: 04/27/2023] [Accepted: 05/03/2023] [Indexed: 05/15/2023] Open
Abstract
The ABCA4 gene encodes an ATP-binding cassette transporter that is expressed specifically in the disc of photoreceptor outer segments. Mutations in the ABCA4 gene are the main cause of retinal degenerations known as "ABCA4-retinopathies." Recent research has revealed that ABCA4 is expressed in other cells as well, such as hair follicles and keratinocytes, although no information on its significance has been evidenced so far. In this study, we investigated the role of the ABCA4 gene in human keratinocytes and hair follicle stem cells for the first time. We have shown that silencing the ABCA4 gene increases the deleterious effect of all-trans-retinal on human hair follicle stem cells.
Collapse
Affiliation(s)
- Aneta Ścieżyńska
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
- Department of Medical Biology, National Institute of Cardiology, Stefan Cardinal Wyszyński State Research Institute, 04-628 Warsaw, Poland
| | - Krzysztof Łuszczyński
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
| | - Marcin Radziszewski
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
| | - Michał Komorowski
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
| | - Marta Soszyńska
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
| | - Natalia Krześniak
- Department of Plastic and Reconstructive Surgery, Medical Centre of Postgraduate Education, Prof. W. Orlowski Memorial Hospital, 00-416 Warsaw, Poland
| | - Kateryna Shevchenko
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
| | - Anna Lutyńska
- Department of Medical Biology, National Institute of Cardiology, Stefan Cardinal Wyszyński State Research Institute, 04-628 Warsaw, Poland
| | - Jacek Malejczyk
- Department of Histology and Embryology, Medical University of Warsaw, 02-004 Warsaw, Poland
| |
Collapse
|
5
|
Ohn J, Son HY, Yu DA, Kim MS, Kwon S, Park WS, Kim JI, Kwon O. Early onset female pattern hair loss: a case–control study for analyzing clinical features and genetic variants. J Dermatol Sci 2022; 106:21-28. [DOI: 10.1016/j.jdermsci.2022.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 02/13/2022] [Accepted: 02/27/2022] [Indexed: 11/26/2022]
|
6
|
Molday RS, Garces FA, Scortecci JF, Molday LL. Structure and function of ABCA4 and its role in the visual cycle and Stargardt macular degeneration. Prog Retin Eye Res 2021; 89:101036. [PMID: 34954332 DOI: 10.1016/j.preteyeres.2021.101036] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/07/2021] [Accepted: 12/13/2021] [Indexed: 12/17/2022]
Abstract
ABCA4 is a member of the superfamily of ATP-binding cassette (ABC) transporters that is preferentially localized along the rim region of rod and cone photoreceptor outer segment disc membranes. It uses the energy from ATP binding and hydrolysis to transport N-retinylidene-phosphatidylethanolamine (N-Ret-PE), the Schiff base adduct of retinal and phosphatidylethanolamine, from the lumen to the cytoplasmic leaflet of disc membranes. This ensures that all-trans-retinal and excess 11-cis-retinal are efficiently cleared from photoreceptor cells thereby preventing the accumulation of toxic retinoid compounds. Loss-of-function mutations in the gene encoding ABCA4 cause autosomal recessive Stargardt macular degeneration, also known as Stargardt disease (STGD1), and related autosomal recessive retinopathies characterized by impaired central vision and an accumulation of lipofuscin and bis-retinoid compounds. High resolution structures of ABCA4 in its substrate and nucleotide free state and containing bound N-Ret-PE or ATP have been determined by cryo-electron microscopy providing insight into the molecular architecture of ABCA4 and mechanisms underlying substrate recognition and conformational changes induced by ATP binding. The expression and functional characterization of a large number of disease-causing missense ABCA4 variants have been determined. These studies have shed light into the molecular mechanisms underlying Stargardt disease and a classification that reliably predicts the effect of a specific missense mutation on the severity of the disease. They also provide a framework for developing rational therapeutic treatments for ABCA4-associated diseases.
Collapse
Affiliation(s)
- Robert S Molday
- Department of Biochemistry & Molecular Biology, University of British Columbia, Vancouver, B.C., Canada; Department of Ophthalmology & Visual Sciences, University of British Columbia, Vancouver, B.C., Canada.
| | - Fabian A Garces
- Department of Biochemistry & Molecular Biology, University of British Columbia, Vancouver, B.C., Canada
| | | | - Laurie L Molday
- Department of Biochemistry & Molecular Biology, University of British Columbia, Vancouver, B.C., Canada
| |
Collapse
|
7
|
Roberts MS, Cheruvu HS, Mangion SE, Alinaghi A, Benson HA, Mohammed Y, Holmes A, van der Hoek J, Pastore M, Grice JE. Topical drug delivery: History, percutaneous absorption, and product development. Adv Drug Deliv Rev 2021; 177:113929. [PMID: 34403750 DOI: 10.1016/j.addr.2021.113929] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/05/2021] [Accepted: 08/11/2021] [Indexed: 02/07/2023]
Abstract
Topical products, widely used to manage skin conditions, have evolved from simple potions to sophisticated delivery systems. Their development has been facilitated by advances in percutaneous absorption and product design based on an increasingly mechanistic understanding of drug-product-skin interactions, associated experiments, and a quality-by-design framework. Topical drug delivery involves drug transport from a product on the skin to a local target site and then clearance by diffusion, metabolism, and the dermal circulation to the rest of the body and deeper tissues. Insights have been provided by Quantitative Structure Permeability Relationships (QSPR), molecular dynamics simulations, and dermal Physiologically Based PharmacoKinetics (PBPK). Currently, generic product equivalents of reference-listed products dominate the topical delivery market. There is an increasing regulatory interest in understanding topical product delivery behavior under 'in use' conditions and predicting in vivo response for population variations in skin barrier function and response using in silico and in vitro findings.
Collapse
|
8
|
Núñez-Torres R, Martín M, García-Sáenz JÁ, Rodrigo-Faus M, Del Monte-Millán M, Tejera-Pérez H, Pita G, de la Torre-Montero JC, Pinilla K, Herraez B, Peiró-Chova L, Bermejo B, Lluch A, González-Neira A. Association Between ABCB1 Genetic Variants and Persistent Chemotherapy-Induced Alopecia in Women With Breast Cancer. JAMA Dermatol 2021; 156:987-991. [PMID: 32756886 DOI: 10.1001/jamadermatol.2020.1867] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Importance Persistent chemotherapy-induced alopecia (pCIA) has been recently described in patients with breast cancer and in its most severe form occurs in up to 10% of these patients. Genetic risk factors associated with pCIA have not been adequately explored. Objective To identify genetic variants associated with pCIA. Design, Setting, and Participants In this genetic association study, 215 women with breast cancer treated with docetaxel-based chemotherapy with a follow-up of 1.5 to 10 years after the end of the treatment were recruited retrospectively through 3 hospital oncology units across Spain between 2005 and 2018. Severe pCIA was defined as lack of scalp hair recovery (Common Terminology Criteria for Adverse Events, version 3.0, grade 2) 18 months or more after the end of treatment. Patients with grade 2 pCIA were selected as cases, and those with no sign of residual alopecia 12 months after the end of docetaxel treatment were selected as controls. A genome-wide association study in a discovery phase was conducted, and logistic regression was used to identify variants associated with the risk to develop this adverse effect. The validity of the association was addressed through a replication phase. Exposures Docetaxel-based chemotherapy. Main Outcomes and Measures Genotypes of single-nucleotide variants associated with pCIA. Results In total, 215 women with breast cancer (median age, 51.6 years; interquartile range, 44-60 years) were recruited (173 patients for the discovery phase and 42 patients for the replication phase). In the discovery phase, ABCB1 genetic variants were associated with risk to develop pCIA. In particular, single-nucleotide variation rs1202179, a regulatory variant located in an enhancer element that interacts with the ABCB1 promoter, was associated with the occurrence of pCIA. This finding was validated in the replication cohort (combined odds ratio, 4.05; 95% CI, 2.46-6.67; P = 3.946 × 10-8). This variant is associated with ABCB1 mRNA expression, and the risk allele was associated with decreased ABCB1 expression levels (P = 1.64 × 10-20). Conclusions and Relevance This is the first study, to our knowledge, that identifies an association between a regulatory variant in the ABCB1 gene and the occurrence of pCIA in patients with breast cancer who were treated with docetaxel-based therapies. This finding suggests an important insight into the biological mechanisms underlying pCIA and opens the opportunity to explore personalized treatment of these patients.
Collapse
Affiliation(s)
- Rocío Núñez-Torres
- Human Genotyping Unit-CeGen (Spanish National Genotyping Centre), Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Miguel Martín
- Medical Oncology Department, Hospital Universitario Gregorio Marañón, Departamento de Medicina, Universidad Complutense CiberOnC, Madrid, Spain
| | - Jose Ángel García-Sáenz
- Hospital Clínico San Carlos, Medical Oncology Department, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, CIBERONC, Madrid, Spain
| | - María Rodrigo-Faus
- Human Genotyping Unit-CeGen (Spanish National Genotyping Centre), Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - María Del Monte-Millán
- Medical Oncology Department, Hospital Universitario Gregorio Marañón, Departamento de Medicina, Universidad Complutense CiberOnC, Madrid, Spain
| | - Hugo Tejera-Pérez
- Human Genotyping Unit-CeGen (Spanish National Genotyping Centre), Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | - Guillermo Pita
- Human Genotyping Unit-CeGen (Spanish National Genotyping Centre), Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | | | - Karen Pinilla
- Hematology and Oncology Department, Hospital Clínico Universitario, Valencia, Spain
| | - Belén Herraez
- Human Genotyping Unit-CeGen (Spanish National Genotyping Centre), Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| | | | - Begoña Bermejo
- Hematology and Oncology Department, Hospital Clínico Universitario, Valencia, Spain.,INCLIVA Biomedical Research Institute, Valencia, Spain.,University of Valencia, Spain.,Centro de Investigación Biomédica en Red de Oncología, CIBERONC-ISCIII
| | - Anna Lluch
- Hematology and Oncology Department, Hospital Clínico Universitario, Valencia, Spain.,INCLIVA Biomedical Research Institute, Valencia, Spain.,University of Valencia, Spain.,Centro de Investigación Biomédica en Red de Oncología, CIBERONC-ISCIII
| | - Anna González-Neira
- Human Genotyping Unit-CeGen (Spanish National Genotyping Centre), Human Cancer Genetics Programme, Spanish National Cancer Research Centre (CNIO), Madrid, Spain
| |
Collapse
|
9
|
Localisation and regulation of cholesterol transporters in the human hair follicle: mapping changes across the hair cycle. Histochem Cell Biol 2021; 155:529-545. [PMID: 33404706 PMCID: PMC8134313 DOI: 10.1007/s00418-020-01957-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2020] [Indexed: 02/06/2023]
Abstract
Cholesterol has long been suspected of influencing hair biology, with dysregulated homeostasis implicated in several disorders of hair growth and cycling. Cholesterol transport proteins play a vital role in the control of cellular cholesterol levels and compartmentalisation. This research aimed to determine the cellular localisation, transport capability and regulatory control of cholesterol transport proteins across the hair cycle. Immunofluorescence microscopy in human hair follicle sections revealed differential expression of ATP-binding cassette (ABC) transporters across the hair cycle. Cholesterol transporter expression (ABCA1, ABCG1, ABCA5 and SCARB1) reduced as hair follicles transitioned from growth to regression. Staining for free cholesterol (filipin) revealed prominent cholesterol striations within the basement membrane of the hair bulb. Liver X receptor agonism demonstrated active regulation of ABCA1 and ABCG1, but not ABCA5 or SCARB1 in human hair follicles and primary keratinocytes. These results demonstrate the capacity of human hair follicles for cholesterol transport and trafficking. Future studies examining the role of cholesterol transport across the hair cycle may shed light on the role of lipid homeostasis in human hair disorders.
Collapse
|
10
|
Weng HJ, Tsai TF. ABCB1 in dermatology: roles in skin diseases and their treatment. J Mol Med (Berl) 2021; 99:1527-1538. [PMID: 34370042 PMCID: PMC8350552 DOI: 10.1007/s00109-021-02105-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 05/26/2021] [Accepted: 06/14/2021] [Indexed: 02/07/2023]
Abstract
Adenosine triphosphate-binding cassette subfamily B member 1 (ABCB1), also known as permeability glycoprotein, multidrug-resistant protein 1, or cluster of differentiation 243 (CD243), is a crucial protein for purging foreign substances from cells. The functions of ABCB1 have been investigated extensively for their roles in cancer, stem cells, and drug resistance. Abundant pharmacogenetic studies have been conducted on ABCB1 and its association with treatment responsiveness to various agents, particularly chemotherapeutic and immunomodulatory agents. However, its functions in the skin and implications on dermatotherapeutics are far less reported. In this article, we reviewed the roles of ABCB1 in dermatology. ABCB1 is expressed in the skin and its appendages during drug delivery and transport. It is associated with treatment responsiveness to various agents, including topical steroids, methotrexate, cyclosporine, azathioprine, antihistamines, antifungal agents, colchicine, tacrolimus, ivermectin, tetracycline, retinoid acids, and biologic agents. Moreover, genetic variation in ABCB1 is associated with the pathogenesis of several dermatoses, including psoriasis, atopic dermatitis, melanoma, bullous pemphigoid, Behçet disease, and lichen planus. Further investigation is warranted to elucidate the roles of ABCB1 in dermatology and the possibility of enhancing therapeutic efficacy through ABCB1 manipulation.
Collapse
Affiliation(s)
- H. J. Weng
- Department of Dermatology, Taipei Medical University-Shuang Ho Hospital, New Taipei City, Taiwan ,Department of Dermatology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan ,Department of Dermatology, National Taiwan University Hospital, 7 Chung Shan S Rd, Taipei, 10048 Taiwan
| | - T. F. Tsai
- Department of Dermatology, National Taiwan University Hospital, 7 Chung Shan S Rd, Taipei, 10048 Taiwan
| |
Collapse
|
11
|
Bao X, Wang J, Zhou G, Aszodi A, Schönitzer V, Scherthan H, Atkinson MJ, Rosemann M. Extended in vitro culture of primary human mesenchymal stem cells downregulates Brca1-related genes and impairs DNA double-strand break recognition. FEBS Open Bio 2020; 10:1238-1250. [PMID: 32333827 PMCID: PMC7327915 DOI: 10.1002/2211-5463.12867] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/15/2020] [Accepted: 04/22/2020] [Indexed: 12/14/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are multilineage adult stem cells with considerable potential for cell‐based regenerative therapies. In vitro expansion changes their epigenetic and cellular properties, with a poorly understood impact on DNA damage response (DDR) and genome stability. We report here results of a transcriptome‐based pathway analysis of in vitro‐expanded human bone marrow‐derived mesenchymal stem cell (hBM‐MSCs), supplemented with cellular assays focusing on DNA double‐strand break (DSB) repair. Gene pathways affected by in vitro aging were mapped using gene ontology, KEGG, and GSEA, and were found to involve DNA repair, homologous recombination (HR), cell cycle control, and chromosomal replication. Assays for the recognition (γ‐H2AX + 53BP1 foci) and repair (pBRCA1 + γ‐H2AX foci) of X‐ray‐induced DNA DSBs in hBM‐MSCs show that over a period of 8 weeks of in vitro aging (i.e., about 10 doubling times), cells exhibit a reduced DDR and a higher fraction of residual DNA damage. Furthermore, a distinct subpopulation of cells with impaired DNA DSB recognition was observed. Several genes that participate in DNA repair by HR (e.g., Rad51, Rad54, BRCA1) show a 2.3‐ to fourfold reduction of their mRNA expression by qRT‐PCR. We conclude that the in vitro expansion of hMSCs can lead to aging‐related impairment of the recognition and repair of DNA breaks.
Collapse
Affiliation(s)
- Xuanwen Bao
- Institute of Radiation Biology, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany.,Medical Graduate School, Technical University of Munich, Germany
| | - Jing Wang
- Institute of Radiation Biology, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany.,Medical Graduate School, Technical University of Munich, Germany
| | - Guangming Zhou
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou, China
| | - Attila Aszodi
- Laboratory of Experimental Surgery and Regenerative Medicine, Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Veronika Schönitzer
- Laboratory of Experimental Surgery and Regenerative Medicine, Clinic for General, Trauma and Reconstructive Surgery, Ludwig-Maximilians-University, Munich, Germany
| | - Harry Scherthan
- Bundeswehr Institute of Radiobiology, Affiliated to the University of Ulm, Munich, Germany
| | - Michael J Atkinson
- Institute of Radiation Biology, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany.,Radiation Biology, Technical University of Munich, Germany
| | - Michael Rosemann
- Institute of Radiation Biology, Helmholtz Center Munich - German Research Center for Environmental Health, Neuherberg, Germany.,Medical Graduate School, Technical University of Munich, Germany
| |
Collapse
|
12
|
Molecular Analysis of the ABCA4 Gene Mutations in Patients with Stargardt Disease Using Human Hair Follicles. Int J Mol Sci 2020; 21:ijms21103430. [PMID: 32413971 PMCID: PMC7279462 DOI: 10.3390/ijms21103430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/05/2020] [Accepted: 05/10/2020] [Indexed: 12/17/2022] Open
Abstract
ABCA4 gene mutations are the cause of a spectrum of ABCA4 retinopathies, and the most common juvenile macular degeneration is called Stargardt disease. ABCA4 has previously been observed almost exclusively in the retina. Therefore, studying the functional consequences of ABCA4 variants has required advanced molecular analysis techniques. The aim of the present study was to evaluate whether human hair follicles may be used for molecular analysis of the ABCA4 gene splice-site variants in patients with ABCA4 retinopathies. We assessed ABCA4 expression in hair follicles and skin at mRNA and protein levels by means of real-time PCR and Western blot analyses, respectively. We performed cDNA sequencing to reveal the presence of full-length ABCA4 transcripts and analyzed ABCA4 transcripts from three patients with Stargardt disease carrying different splice-site ABCA4 variants: c.5312+1G>A, c.5312+2T>G and c.5836-3C>A. cDNA analysis revealed that c.5312+1G>A, c.5312+2T>G variants led to the skipping of exon 37, and the c.5836-3C>A variant resulted in the insertion of 30 nucleotides into the transcript. Our results strongly argue for the use of hair follicles as a model for the molecular analysis of the pathogenicity of ABCA4 variants in patients with ABCA4 retinopathies.
Collapse
|
13
|
Carré J, Suzuki T, Paus R. Do hair follicles operate as primitive, multifocal kidney‐like excretory (mini‐) organs? Exp Dermatol 2020; 29:357-365. [DOI: 10.1111/exd.14076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/20/2022]
Affiliation(s)
- Jean‐Luc Carré
- Département de Biochimie et Pharmaco‐Toxicologie Hôpital de la Cavale Blanche CHRU Brest France
- EA 4685 Laboratoire des Interactions Epithelium ‐ Neurones University of Brest Brest France
| | - Takahiro Suzuki
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery University of Miami Miller School of Medicine Miami FL USA
- Department of Dermatology Hamamatsu University School of Medicine Hamamatsu Japan
| | - Ralf Paus
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery University of Miami Miller School of Medicine Miami FL USA
- Centre for Dermatology Research University of Manchester Manchester UK
- Monasterium Laboratory Münster Germany
| |
Collapse
|
14
|
Palmer MA, Blakeborough L, Harries M, Haslam IS. Cholesterol homeostasis: Links to hair follicle biology and hair disorders. Exp Dermatol 2019; 29:299-311. [PMID: 31260136 DOI: 10.1111/exd.13993] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 05/24/2019] [Accepted: 06/19/2019] [Indexed: 01/10/2023]
Abstract
Lipids and lipid metabolism are critical factors in hair follicle (HF) biology, and cholesterol has long been suspected of influencing hair growth. Altered cholesterol homeostasis is involved in the pathogenesis of primary cicatricial alopecia, mutations in a cholesterol transporter are associated with congenital hypertrichosis, and dyslipidaemia has been linked to androgenic alopecia. The underlying molecular mechanisms by which cholesterol influences pathways involved in proliferation and differentiation within HF cell populations remain largely unknown. As such, expanding our knowledge of the role for cholesterol in regulating these processes is likely to provide new leads in the development of treatments for disorders of hair growth and cycling. This review describes the current state of knowledge with respect to cholesterol homeostasis in the HF along with known and putative links to hair pathologies.
Collapse
Affiliation(s)
- Megan A Palmer
- School of Applied Sciences, Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
| | - Liam Blakeborough
- School of Applied Sciences, Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
| | - Matthew Harries
- Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.,Musculoskeletal and Dermatological Sciences, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Iain S Haslam
- School of Applied Sciences, Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
| |
Collapse
|
15
|
Inhibition of ATP binding cassette transporter B1 sensitizes human hair follicles to chemotherapy-induced damage. J Dermatol Sci 2019; 95:44-47. [PMID: 31272852 DOI: 10.1016/j.jdermsci.2019.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 05/29/2019] [Accepted: 06/10/2019] [Indexed: 01/08/2023]
|
16
|
Haslam IS, Smart E. Chemotherapy-Induced Hair Loss: The Use of Biomarkers for Predicting Alopecic Severity and Treatment Efficacy. Biomark Insights 2019; 14:1177271919842180. [PMID: 31037027 PMCID: PMC6475836 DOI: 10.1177/1177271919842180] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/08/2019] [Indexed: 01/08/2023] Open
Abstract
Damage to hair follicles following exposure to toxic chemotherapeutics can cause substantial hair loss, commonly known as chemotherapy-induced alopecia (CIA). Preventive therapies remain limited; however, recent advances in the use of scalp cooling technologies have proved successful in preventing or reducing hair loss in some patients. Further improvements in scalp cooling efficacy and/or development of novel treatments to prevent chemotherapy-induced hair loss are required. To achieve this, post-chemotherapy assessment of hair follicle damage markers, with and without scalp cooling, would provide invaluable mechanistic and prognostic information. At present, the availability of such data is extremely limited. This article describes the potential utility of a combination of biomarkers in assessing drug-induced alopecia and the protective potential of existing or new treatments. A greater understanding of the precise mechanisms of anti-CIA therapies through biomarker analysis would enhance the rationale, use, and development of such treatments.
Collapse
Affiliation(s)
- Iain S Haslam
- School of Applied Sciences, University of Huddersfield, Huddersfield, UK
| | - Eleanor Smart
- Centre for Dermatology Research, University of Manchester, Manchester, UK
| |
Collapse
|
17
|
Liu Z, Liu W, Fan J, Liu L, Tian J, Gan C, Jiao H, Yang Z. Effect of Mechanical Tension on the circRNA Expression Profile of Human Skin Tissue. J Craniofac Surg 2019; 30:e474-e477. [DOI: 10.1097/scs.0000000000005592] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
|
18
|
Heyes N, Kapoor P, Kerr ID. Polymorphisms of the Multidrug Pump ABCG2: A Systematic Review of Their Effect on Protein Expression, Function, and Drug Pharmacokinetics. Drug Metab Dispos 2018; 46:1886-1899. [PMID: 30266733 DOI: 10.1124/dmd.118.083030] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 09/20/2018] [Indexed: 12/11/2022] Open
Abstract
The widespread expression and polyspecificity of the multidrug ABCG2 efflux transporter make it an important determinant of the pharmacokinetics of a variety of substrate drugs. Null ABCG2 expression has been linked to the Junior blood group. Polymorphisms affecting the expression or function of ABCG2 may have clinically important roles in drug disposition and efficacy. The most well-studied single nucleotide polymorphism (SNP), Q141K (421C>A), is shown to decrease ABCG2 expression and activity, resulting in increased total drug exposure and decreased resistance to various substrates. The effect of Q141K can be rationalized by inspection of the ABCG2 structure, and the effects of this SNP on protein processing may make it a target for pharmacological intervention. The V12M SNP (34G>A) appears to improve outcomes in cancer patients treated with tyrosine kinase inhibitors, but the reasons for this are yet to be established, and this residue's role in the mechanism of the protein is unexplored by current biochemical and structural approaches. Research into the less-common polymorphisms is confined to in vitro studies, with several polymorphisms shown to decrease resistance to anticancer agents such as SN-38 and mitoxantrone. In this review, we present a systematic analysis of the effects of ABCG2 polymorphisms on ABCG2 function and drug pharmacokinetics. Where possible, we use recent structural advances to present a molecular interpretation of the effects of SNPs and indicate where we need further in vitro experiments to fully resolve how SNPs impact ABCG2 function.
Collapse
Affiliation(s)
- Niall Heyes
- School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Parth Kapoor
- School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| | - Ian D Kerr
- School of Life Sciences, Queen's Medical Centre, University of Nottingham, Nottingham, United Kingdom
| |
Collapse
|
19
|
Parodi C, Hardman JA, Allavena G, Marotta R, Catelani T, Bertolini M, Paus R, Grimaldi B. Autophagy is essential for maintaining the growth of a human (mini-)organ: Evidence from scalp hair follicle organ culture. PLoS Biol 2018; 16:e2002864. [PMID: 29590104 PMCID: PMC5891029 DOI: 10.1371/journal.pbio.2002864] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 04/09/2018] [Accepted: 03/08/2018] [Indexed: 12/11/2022] Open
Abstract
Autophagy plays a crucial role in health and disease, regulating central cellular processes such as adaptive stress responses, differentiation, tissue development, and homeostasis. However, the role of autophagy in human physiology is poorly understood, highlighting a need for a model human organ system to assess the efficacy and safety of strategies to therapeutically modulate autophagy. As a complete, cyclically remodelled (mini-)organ, the organ culture of human scalp hair follicles (HFs), which, after massive growth (anagen), spontaneously enter into an apoptosis-driven organ involution (catagen) process, may provide such a model. Here, we reveal that in anagen, hair matrix keratinocytes (MKs) of organ-cultured HFs exhibit an active autophagic flux, as documented by evaluation of endogenous lipidated Light Chain 3B (LC3B) and sequestosome 1 (SQSTM1/p62) proteins and the ultrastructural visualization of autophagosomes at all stages of the autophagy process. This autophagic flux is altered during catagen, and genetic inhibition of autophagy promotes catagen development. Conversely, an anti-hair loss product markedly enhances intrafollicular autophagy, leading to anagen prolongation. Collectively, our data reveal a novel role of autophagy in human hair growth. Moreover, we show that organ-cultured scalp HFs are an excellent preclinical research model for exploring the role of autophagy in human tissue physiology and for evaluating the efficacy and tissue toxicity of candidate autophagy-modulatory agents in a living human (mini-)organ.
Collapse
Affiliation(s)
- Chiara Parodi
- Department of Drug Discovery and Development, Laboratory of Molecular Medicine, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| | - Jonathan A. Hardman
- The Centre for Dermatology Research, University of Manchester, MAHSC, and National Institutes of Health Biomedical Research Center, Manchester, United Kingdom
| | - Giulia Allavena
- Department of Drug Discovery and Development, Laboratory of Molecular Medicine, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| | - Roberto Marotta
- Department of Drug Discovery and Development, Laboratory of Molecular Medicine, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| | - Tiziano Catelani
- Department of Drug Discovery and Development, Laboratory of Molecular Medicine, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| | - Marta Bertolini
- Monasterium Laboratory, Münster, Germany
- Department of Dermatology, University of Münster, Münster, Germany
| | - Ralf Paus
- The Centre for Dermatology Research, University of Manchester, MAHSC, and National Institutes of Health Biomedical Research Center, Manchester, United Kingdom
- Monasterium Laboratory, Münster, Germany
- Department of Dermatology and Cutaneous Medicine, University of Miami Miller School of Medicine, Miami, Florida, United States of America
| | - Benedetto Grimaldi
- Department of Drug Discovery and Development, Laboratory of Molecular Medicine, Fondazione Istituto Italiano di Tecnologia (IIT), Genoa, Italy
| |
Collapse
|
20
|
Dunnill CJ, Al-Tameemi W, Collett A, Haslam IS, Georgopoulos NT. A Clinical and Biological Guide for Understanding Chemotherapy-Induced Alopecia and Its Prevention. Oncologist 2017; 23:84-96. [PMID: 28951499 DOI: 10.1634/theoncologist.2017-0263] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 08/17/2017] [Indexed: 12/11/2022] Open
Abstract
Chemotherapy-induced alopecia (CIA) is the most visibly distressing side effect of commonly administered chemotherapeutic agents. Because psychological health has huge relevance to lifestyle, diet, and self-esteem, it is important for clinicians to fully appreciate the psychological burden that CIA can place on patients. Here, for the first time to our knowledge, we provide a comprehensive review encompassing the molecular characteristics of the human hair follicle (HF), how different anticancer agents damage the HF to cause CIA, and subsequent HF pathophysiology, and we assess known and emerging prevention modalities that have aimed to reduce or prevent CIA. We argue that, at present, scalp cooling is the only safe and U.S. Food and Drug Administration-cleared modality available, and we highlight the extensive available clinical and experimental (biological) evidence for its efficacy. The likelihood of a patient that uses scalp cooling during chemotherapy maintaining enough hair to not require a wig is approximately 50%. This is despite different types of chemotherapy regimens, patient-specific differences, and possible lack of staff experience in effectively delivering scalp cooling. The increased use of scalp cooling and an understanding of how to deliver it most effectively to patients has enormous potential to ease the psychological burden of CIA, until other, more efficacious, equally safe treatments become available. IMPLICATIONS FOR PRACTICE Chemotherapy-induced alopecia (CIA) represents perhaps the most distressing side effect of chemotherapeutic agents and is of huge concern to the majority of patients. Scalp cooling is currently the only safe option to combat CIA. Clinical and biological evidence suggests improvements can be made, including efficacy in delivering adequately low temperature to the scalp and patient-specific cap design. The increased use of scalp cooling, an understanding of how to deliver it most effectively, and biological evidence-based approaches to improve its efficacy have enormous potential to ease the psychological burden of CIA, as this could lead to improvements in treatment and patient quality-of-life.
Collapse
Affiliation(s)
- Christopher John Dunnill
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
- Institute of Skin Integrity and Infection Prevention, University of Huddersfield, Huddersfield, United Kingdom
| | - Wafaa Al-Tameemi
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
| | - Andrew Collett
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
- Institute of Skin Integrity and Infection Prevention, University of Huddersfield, Huddersfield, United Kingdom
| | - Iain Stuart Haslam
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
- Institute of Skin Integrity and Infection Prevention, University of Huddersfield, Huddersfield, United Kingdom
| | - Nikolaos Theodoros Georgopoulos
- Department of Biological Sciences, School of Applied Sciences, University of Huddersfield, Huddersfield, United Kingdom
- Institute of Skin Integrity and Infection Prevention, University of Huddersfield, Huddersfield, United Kingdom
| |
Collapse
|
21
|
Mizuno K, Akimoto N, Kawamura M, Nakase K, Noguchi N, Sato T. Involvement of adenosine triphosphate-binding cassette subfamily B member 1 in the augmentation of triacylglycerol excretion by Propionibacterium acnes in differentiated hamster sebocytes. J Dermatol 2017; 44:1404-1407. [PMID: 28714181 DOI: 10.1111/1346-8138.13963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 06/05/2017] [Indexed: 01/12/2023]
Abstract
An onset of acne, a common inflammatory skin disease, is associated with excess sebum production and secretion in sebaceous glands. Because Propionibacterium acnes has been reported to augment intracellular sebum accumulation in sebaceous glands in hamsters, it remains unclear whether P. acnes influences sebum secretion from differentiated sebocytes. Both P. acnes culture media (Acnes73-CM) and formalin-killed P. acnes (F-Acnes73) dose-dependently increased the extracellular levels of triacylglycerol (TG), a major sebum component, and Rhodamine 123, a substrate of adenosine triphosphate-binding cassette (ABC) transporter, from differentiated hamster sebocytes (DHS). In addition, the gene expression of the ABC subfamily B member 1 (ABCB1) was dose-dependently augmented by adding Acnes73-CM and F-Acnes73 into DHS. Furthermore, the F-Acnes73-induced increase of TG excretion was suppressed by PSC833, a selective ABCB1 inhibitor. On the other hand, peptidoglycan (PGN), which is a Toll-like receptor 2 (TLR2) ligand in P. acnes, increased extracellular TG levels, transporter activity and ABCB1 mRNA expression in DHS. The PGN-augmented TG excretion was suppressed by PSC833. Thus, these results provide novel evidence that P. acnes facilitates sebum secretion due to the activation of ABCB1 concomitantly with the increased ABCB1 expression, which may result from the activation of the TLR2 pathway in DHS. Therefore, the ABCB1 inhibitor is likely to become a candidate as a possible therapeutic for the treatment of acne.
Collapse
Affiliation(s)
- Koji Mizuno
- Department of Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Noriko Akimoto
- Department of Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Mina Kawamura
- Department of Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Keisuke Nakase
- Department of, Microbiology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Norihisa Noguchi
- Department of, Microbiology, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| | - Takashi Sato
- Department of Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Tokyo, Japan
| |
Collapse
|
22
|
Cellular Models and In Vitro Assays for the Screening of modulators of P-gp, MRP1 and BCRP. Molecules 2017; 22:molecules22040600. [PMID: 28397762 PMCID: PMC6153761 DOI: 10.3390/molecules22040600] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 03/24/2017] [Accepted: 03/28/2017] [Indexed: 12/12/2022] Open
Abstract
Adenosine triphosphate (ATP)-binding cassette (ABC) transporters are highly expressed in tumor cells, as well as in organs involved in absorption and secretion processes, mediating the ATP-dependent efflux of compounds, both endogenous substances and xenobiotics, including drugs. Their expression and activity levels are modulated by the presence of inhibitors, inducers and/or activators. In vitro, ex vivo and in vivo studies with both known and newly synthesized P-glycoprotein (P-gp) inducers and/or activators have shown the usefulness of these transport mechanisms in reducing the systemic exposure and specific tissue access of potentially harmful compounds. This article focuses on the main ABC transporters involved in multidrug resistance [P-gp, multidrug resistance-associated protein 1 (MRP1) and breast cancer resistance protein (BCRP)] expressed in tissues of toxicological relevance, such as the blood-brain barrier, cardiovascular system, liver, kidney and intestine. Moreover, it provides a review of the available cellular models, in vitro and ex vivo assays for the screening and selection of safe and specific inducers and activators of these membrane transporters. The available cellular models and in vitro assays have been proposed as high throughput and low-cost alternatives to excessive animal testing, allowing the evaluation of a large number of compounds.
Collapse
|
23
|
What happens in the skin? Integrating skin permeation kinetics into studies of developmental and reproductive toxicity following topical exposure. Reprod Toxicol 2015; 58:252-81. [DOI: 10.1016/j.reprotox.2015.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 08/31/2015] [Accepted: 10/07/2015] [Indexed: 02/07/2023]
|
24
|
Ohyama M. Pump up the hair follicle. Br J Dermatol 2015; 172:1479-1480. [DOI: 10.1111/bjd.13724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Ohyama
- Department of Dermatology; Keio University School of Medicine; 35 Shinanomachi Shinjuku-ku Tokyo Japan
| |
Collapse
|