1
|
Zhang J, Yao Y, Tan Y, Hu HY, Zeng LX, Zhang GQ. Genetic analysis of seven patients with inherited ichthyosis and Nagashima‑type palmoplantar keratoderma. Mol Med Rep 2024; 30:111. [PMID: 38695247 PMCID: PMC11094583 DOI: 10.3892/mmr.2024.13235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/22/2024] [Indexed: 05/18/2024] Open
Abstract
Inherited ichthyosis comprises a series of heterogeneous dermal conditions; it mainly manifests as widespread hyperkeratosis, xerosis and scaling of the skin. At times, overlapping symptoms require differential diagnosis between ichthyosis and several other similar disorders. The present study reports seven patients with confirmed or suspected to be associated with ichthyosis by conducting a thorough clinical and genetic investigation. Genetic testing was conducted using whole‑exome sequencing, with Sanger sequencing as the validation method. The MEGA7 program was used to analyze the conservation of amino acid residues affected by the detected missense variants. The enrolled patients exhibited ichthyosis‑like but distinct clinical manifestations. Genetic analysis identified diagnostic variations in the FLG, STS, KRT10 and SERPINB7 genes and clarified the carrying status of each variant in the respective family members. The two residues affected by the detected missense variants remained conserved across multiple species. Of note, the two variants, namely STS: c.452C>T(p.P151L) and c.647_650del(p.L216fs) are novel. In conclusion, a clear genetic differential diagnosis was made for the enrolled ichthyosis‑associated patients; the study findings also extended the mutation spectrum of ichthyosis and provided solid evidence for the counseling of the affected families.
Collapse
Affiliation(s)
- Jing Zhang
- Department of Gynecology and Obstetrics, Beijing Jishuitan Hospital, Capital Medical University, Beijing 102208, P.R. China
| | - Yue Yao
- Department of Dermatology, The First Hospital of Hebei Medical University, Candidate Branch of National Clinical Research Center for Skin Diseases, Hebei Provincial Innovation Center of Dermatology and Medical Cosmetology Technology, Shijiazhuang, Hebei 050030, P.R. China
| | - Ya Tan
- Department of Obstetrics and Gynecology, Peking University International Hospital, Beijing 102206, P.R. China
| | - Hua-Ying Hu
- Jiaen Genetics Laboratory, Beijing Jiaen Hospital, Beijing 100191, P.R. China
| | - Lin-Xi Zeng
- Department of Dermatology, The First Hospital of Hebei Medical University, Candidate Branch of National Clinical Research Center for Skin Diseases, Hebei Provincial Innovation Center of Dermatology and Medical Cosmetology Technology, Shijiazhuang, Hebei 050030, P.R. China
| | - Guo-Qiang Zhang
- Department of Dermatology, The First Hospital of Hebei Medical University, Candidate Branch of National Clinical Research Center for Skin Diseases, Hebei Provincial Innovation Center of Dermatology and Medical Cosmetology Technology, Shijiazhuang, Hebei 050030, P.R. China
| |
Collapse
|
2
|
Shen G, Zou L, Li W, Tang K, Zhang Y, Ding Z, Shen X. [Analysis of the results for genetic disease screening among 1 000 newborns from Huzhou]. Zhonghua Yi Xue Yi Chuan Xue Za Zhi 2024; 41:551-555. [PMID: 38684299 DOI: 10.3760/cma.j.cn511374-20230703-00407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
OBJECTIVE To analyze the types and distribution of pathogenic variants for neonatal genetic diseases in Huzhou, Zhejiang Province. METHODS One thousand neonates (48 ~ 42 h after birth) born to Huzhou region were selected as the study subjects. Dry blood spot samples were collected from the newborns, and targeted capture high-throughput sequencing was carried out for pathogenic genes underlying 542 inherited diseases. Candidate variants were verified by Sanger sequencing. RESULTS Among the 1 000 newborns, the male to female ratio was 1.02 : 1.00. No pathogenic variants were detected in 253 cases, whilst 747 cases were found to carry at least one pathogenic variant, which yielded a carrier rate of 74.7%. The most frequently involved pathogenic gene was FLG, followed by GJB2, UGT1A1, USH2A and DUOX2. The variants were classified as homozygous, compound heterozygous, and hemizygous variants. Based on the guidelines from the American College of Medical Genetics and Genomics (ACMG), 213 neonates were verified to have carried pathogenic and/or likely pathogenic variants, with a positive rate of 21.3%. The most commonly involved genes had included UGT1A1, FLG, GJB2, MEFV and G6PD. CONCLUSION Newborn screening based on high-throughput sequencing technology can expand the scope of screening and improve the positive predictive value. Genetic counseling based on the results can improve the patients' medical care and reduce neonatal mortality and childhood morbidity, while provide assistance to family members' health management and reproductive decisions.
Collapse
Affiliation(s)
- Guosong Shen
- Medical Laboratory Center of Huzhou Maternal and Child Health Care Hospital, Huzhou, Zhejiang 313002, China.
| | | | | | | | | | | | | |
Collapse
|
3
|
Sahara S, Ueno A, Wakita N, Iwai M, Uda J, Nakaoji K, Hamada K, Maeda A, Kaneda Y, Fujimoto M. (S)-(-)-blebbistatin O-benzoate has the potential to improve atopic dermatitis symptoms in NC/Nga mice by upregulating epidermal barrier function and inhibiting type 2 alarmin cytokine induction. PLoS One 2024; 19:e0302781. [PMID: 38713650 DOI: 10.1371/journal.pone.0302781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 04/11/2024] [Indexed: 05/09/2024] Open
Abstract
Atopic dermatitis is a multi-pathogenic disease characterized by chronic skin inflammation and barrier dysfunction. Therefore, improving the skin's ability to form an epidermal barrier and suppressing the production of cytokines that induce type 2 inflammatory responses are important for controlling atopic dermatitis symptoms. (-)-Blebbistatin, a non-muscle myosin II inhibitor, has been suggested to improve pulmonary endothelial barrier function and control inflammation by suppressing immune cell migration; however, its efficacy in atopic dermatitis is unknown. In this study, we investigated whether (S)-(-)-blebbistatin O-benzoate, a derivative of (-)-blebbistatin, improves dermatitis symptoms in a mite antigen-induced atopic dermatitis model using NC/Nga mice. The efficacy of the compound was confirmed using dermatitis scores, ear thickness measurements, serum IgE levels, histological analysis of lesions, and filaggrin expression analysis, which is important for barrier function. (S)-(-)-Blebbistatin O-benzoate treatment significantly reduced the dermatitis score and serum IgE levels compared to those in the vehicle group (p < 0.05). Furthermore, the histological analysis revealed enhanced filaggrin production and a decreased number of mast cells (p < 0.05), indicating that (S)-(-)-blebbistatin O-benzoate improved atopic dermatitis symptoms in a pathological model. In vitro analysis using cultured keratinocytes revealed increased expression of filaggrin, loricrin, involucrin, and ceramide production pathway-related genes, suggesting that (S)-(-)-blebbistatin O-benzoate promotes epidermal barrier formation. Furthermore, the effect of (S)-(-)-blebbistatin O-benzoate on type 2 alarmin cytokines, which are secreted from epidermal cells upon scratching or allergen stimulation and are involved in the pathogenesis of atopic dermatitis, was evaluated using antigens derived from mite feces. The results showed that (S)-(-)-blebbistatin O-benzoate inhibited the upregulation of these cytokines. Based on the above, (S)-(-)-blebbistatin O-benzoate has the potential to be developed as an atopic dermatitis treatment option that controls dermatitis symptoms by suppressing inflammation and improving barrier function by acting on multiple aspects of the pathogenesis of atopic dermatitis.
Collapse
Affiliation(s)
- Shunya Sahara
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Ayumi Ueno
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Natsuki Wakita
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Miki Iwai
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Junki Uda
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Koich Nakaoji
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Kazuhiko Hamada
- Research and Development Division, PIAS Corporation, Kobe, Hyogo, Japan
| | - Akito Maeda
- Office of Management and Planning, Osaka University, Suita, Osaka, Japan
| | - Yasufumi Kaneda
- Vice President Office, Osaka University, Suita, Osaka, Japan
| | - Manabu Fujimoto
- Department of Dermatology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| |
Collapse
|
4
|
Wu J, Namkoong J, Goswami S, Cohen JL, Soliman N. Ultraviolet Protection From a Patented Amino Acid Complex Technology. J Drugs Dermatol 2024; 23:366-375. [PMID: 38709706 DOI: 10.36849/jdd.7916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
OBJECTIVE This study aimed to investigate the ultraviolet (UV) protection/repair benefits of a patented Amino Acid Complex (AAComplex). METHODS I) AAComplex was incubated with dermal fibroblasts, with/without UVA, and collagen I was measured with a GlasBoxPlus device. II) A lotion, with/without AAComplex (1%) was applied topically to skin explants, following UVA irradiation, and quantified for health-related biomarkers (TNFalpha, histamine, and MMP-1). III) A broad spectrum sunscreen with SPF 46 and a skincare serum containing AAComplex (2%) were assessed using epidermal equivalents, in the presence of UV irradiation, for effects on IL-1alpha, thymine dimers, Ki-67, filaggrin and Nrf2. RESULTS I) Collagen I synthesis in dermal fibroblasts was significantly decreased after UVA compared to without UV. The presence of AAComplex prevented this decrease. II) UVA irradiation of skin explants increased histamine, TNFα, and MMP-1. Hydrocortisone aceponate cream significantly decreases all 3 biomarkers. AAComplex contained lotion also significantly decreased all 3 biomarkers, the no AAComplex control lotion only reduced histamine. III) With the regimen of sunscreen + AAComplex contained skincare serum, the significant reduction in IL-1alpha was observed along with a complete recovery of Ki-67 and stimulation of filaggrin and Nrf2T. No thymine dimer positive cell was observed indicating the most positive skin impact from the regiment. Conclusion: This research using different human skin models demonstrated that AAComplex can provide protection and damage repair caused by UV, at the ingredient level also when formulated in a serum or lotion formula. Skin may be best protected from UV damage when the regimen is used. J Drugs Dermatol. 2024;23(5):366-375. doi:10.36849/JDD.7916.
Collapse
|
5
|
Schuler CF, Tsoi LC, Billi AC, Harms PW, Weidinger S, Gudjonsson JE. Genetic and Immunological Pathogenesis of Atopic Dermatitis. J Invest Dermatol 2024; 144:954-968. [PMID: 38085213 PMCID: PMC11040454 DOI: 10.1016/j.jid.2023.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/05/2023] [Accepted: 10/25/2023] [Indexed: 02/03/2024]
Abstract
Type 2 immune-mediated diseases give a clear answer to the issue of nature (genetics) versus nurture (environment). Both genetics and environment play vital complementary roles in the development of atopic dermatitis (AD). As a key component of the atopic march, AD demonstrates the interactive nature of genetic and environmental contributions to atopy. From sequence variants in the epithelial barrier gene encoding FLG to the hygiene hypothesis, AD combines a broad array of contributions into a single syndrome. This review will focus on the genetic contribution to AD and where genetics facilitates the elicitation or enhancement of AD pathogenesis.
Collapse
Affiliation(s)
- Charles F Schuler
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA; Mary H. Weiser Food Allergy Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Lam C Tsoi
- Mary H. Weiser Food Allergy Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA; Department of Dermatology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Allison C Billi
- Department of Dermatology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Paul W Harms
- Department of Dermatology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA; Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Stephan Weidinger
- Department of Dermatology, Venereology, and Allergology, University Hospital Schleswig-Holstein, Kiel, Germany
| | - Johann E Gudjonsson
- Mary H. Weiser Food Allergy Center, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA; Department of Dermatology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA.
| |
Collapse
|
6
|
Mukhopadhyay S, Brown SJ. FLG Knockdown-Related Skin-Lung Crosstalk Biologically Underpins a Filaggrin-Related Childhood Asthma Subtype. J Invest Dermatol 2024; 144:921-923. [PMID: 38372679 DOI: 10.1016/j.jid.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Affiliation(s)
- Somnath Mukhopadhyay
- Department of Clinical and Experimental Medicine, Brighton and Sussex Medical School, Brighton, United Kingdom.
| | - Sara J Brown
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburg, United Kingdom
| |
Collapse
|
7
|
Celli A, Pitchford M, Lu N, Mayes AE, Evans RL, Mauro TM. Restoring Endoplasmic Reticulum Calcium Stores in Aged Epidermis Improves the Epidermal Calcium Gradient and Enhances FLG Expression. J Invest Dermatol 2024; 144:1169-1172.e1. [PMID: 38036290 DOI: 10.1016/j.jid.2023.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/12/2023] [Accepted: 10/10/2023] [Indexed: 12/02/2023]
Affiliation(s)
- Anna Celli
- Dermatology Service, San Francisco VA Health Care System, San Francisco, California, USA; Department of Dermatology, University of California San Francisco, San Francisco, California, USA; Northern California Institute for Research and Education, San Francisco, California, USA; Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California, USA
| | - Marquel Pitchford
- Dermatology Service, San Francisco VA Health Care System, San Francisco, California, USA; Department of Dermatology, University of California San Francisco, San Francisco, California, USA; Northern California Institute for Research and Education, San Francisco, California, USA
| | - Nandou Lu
- Unilever R&D, Trumbull, Connecticut, USA
| | | | - Richard L Evans
- Unilever R&D Port Sunlight Laboratory, Bebington, United Kingdom
| | - Theodora M Mauro
- Dermatology Service, San Francisco VA Health Care System, San Francisco, California, USA; Department of Dermatology, University of California San Francisco, San Francisco, California, USA; Northern California Institute for Research and Education, San Francisco, California, USA.
| |
Collapse
|
8
|
Chen M, Sun Y, Zhu L, Li L, Zhao Y. Study on the Skincare Effects of Red Rice Fermented by Aspergillus oryzae In Vitro. Molecules 2024; 29:2066. [PMID: 38731556 PMCID: PMC11085780 DOI: 10.3390/molecules29092066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/25/2024] [Accepted: 04/25/2024] [Indexed: 05/13/2024] Open
Abstract
Red rice, a variety of pigmented grain, serves dual purposes as both a food and medicinal resource. In recent years, we have witnessed an increasing interest in the dermatological benefits of fermented rice extracts, particularly their whitening and hydrating effects. However, data on the skincare advantages derived from fermenting red rice with Aspergillus oryzae remain sparse. This study utilized red rice as a substrate for fermentation by Aspergillus oryzae, producing a substance known as red rice Aspergillus oryzae fermentation (RRFA). We conducted a preliminary analysis of RRFA's composition followed by an evaluation of its skincare potential through various in vitro tests. Our objective was to develop a safe and highly effective skincare component for potential cosmetic applications. RRFA's constituents were assessed using high-performance liquid chromatography (HPLC), Kjeldahl nitrogen determination, the phenol-sulfuric acid method, and enzyme-linked immunosorbent assay (ELISA). We employed human dermal fibroblasts (FB) to assess RRFA's anti-aging and antioxidative properties, immortalized keratinocytes (HaCaT cells) and 3D epidermal models to examine its moisturizing and reparative capabilities, and human primary melanocytes (MCs) to study its effects on skin lightening. Our findings revealed that RRFA encompasses several bioactive compounds beneficial for skin health. RRFA can significantly promote the proliferation of FB cells. And it markedly enhances the mRNA expression of ECM-related anti-aging genes and reduces reactive oxygen species production. Furthermore, RRFA significantly boosts the expression of Aquaporin 3 (AQP3), Filaggrin (FLG), and Hyaluronan Synthase 1 (HAS1) mRNA, alongside elevating moisture levels in a 3D epidermal model. Increases were also observed in the mRNA expression of Claudin 1 (CLDN1), Involucrin (IVL), and Zonula Occludens-1 (ZO-1) in keratinocytes. Additionally, RRFA demonstrated an inhibitory effect on melanin synthesis. Collectively, RRFA contains diverse ingredients which are beneficial for skin health and showcases multifaceted skincare effects in terms of anti-aging, antioxidant, moisturizing, repairing, and whitening capabilities in vitro, highlighting its potential for future cosmetic applications.
Collapse
Affiliation(s)
| | | | | | | | - Ya Zhao
- Shanghai Jahwa United Co., Ltd., Shanghai 200082, China; (M.C.); (Y.S.); (L.Z.); (L.L.)
| |
Collapse
|
9
|
Kim SY, Lee JO, Lee S, Heo J, Cho KH, Bahuguna A, Yoo KH, Kim BJ. Ozonated Sunflower Oil (OSO) Alleviates Inflammatory Responses in Oxazolone-Induced Atopic Dermatitis (AD)-Like Mice and LPS-Treated RAW 264.7 Cells. J Microbiol Biotechnol 2024; 34:765-773. [PMID: 38247218 DOI: 10.4014/jmb.2310.10037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/21/2023] [Accepted: 01/03/2024] [Indexed: 01/23/2024]
Abstract
Ozone, a highly reactive oxidant molecule, is widely used as a complementary therapy for various skin diseases, including wound healing, pressure ulcers, diabetic foot, and infections. However, there is limited research on the effectiveness of ozone for atopic dermatitis (AD). Ozonated sunflower oil (OSO) is an active ingredient obtained from partially ozonated sunflower oil (SO). OSO markedly reduced the LPS-induced increase in IL-1β and nitric oxide (NO) levels in RAW 264.7 mouse macrophage cells. Oxazolone (OXZ) was applied to hairless mice to induce AD-like skin symptoms and immune response. OSO significantly alleviated the OXZ-induced increases in the number of infiltrating mast cells, epidermal thickness, AD symptoms, thymic stromal lymphopoietin (TSLP), and filaggrin, as well as the serum levels of NO, IgE, IL-1β, and TNF-α. Furthermore, OSO inhibited the IL-4/STAT3/MAPK pathway and the expression of NF-κB. Our results suggest that OSO treatment could relieve AD-mediated skin damage through its anti-inflammatory and antioxidant activities. Therefore, it can be used as a therapeutic agent against AD-related skin diseases.
Collapse
Affiliation(s)
- Su-Young Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06973, Republic of Korea
| | - Jung Ok Lee
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sue Lee
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06973, Republic of Korea
| | - Jihye Heo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06973, Republic of Korea
| | - Kyung-Hyun Cho
- Raydel Research Institute, Medical Innovation Complex, Daegu 41061, Republic of Korea
| | - Ashutosh Bahuguna
- Raydel Research Institute, Medical Innovation Complex, Daegu 41061, Republic of Korea
| | - Kwang-Ho Yoo
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Beom Joon Kim
- Department of Dermatology, College of Medicine, Chung-Ang University, Seoul 06974, Republic of Korea
- Department of Medicine, Graduate School, Chung-Ang University, Seoul 06973, Republic of Korea
| |
Collapse
|
10
|
Jang AY, Choi J, Rod-In W, Choi KY, Lee DH, Park WJ. In Vitro Anti-Inflammatory and Skin Protective Effects of Codium fragile Extract on Macrophages and Human Keratinocytes in Atopic Dermatitis. J Microbiol Biotechnol 2024; 34:940-948. [PMID: 38314445 DOI: 10.4014/jmb.2312.12002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/27/2023] [Accepted: 01/05/2024] [Indexed: 02/06/2024]
Abstract
Codium fragile has been traditionally used in oriental medicine to treat enterobiasis, dropsy, and dysuria, and it has been shown to possess many biological properties. Atopic dermatitis (AD) is one of the types of skin inflammation and barrier disruption, which leads to chronic inflammatory skin diseases. In the current investigation, the protective effects of C. fragile extract (CFE) on anti-inflammation and skin barrier improvement were investigated. In LPS-stimulated RAW 264.7 cells, nitric oxide generation and the expression levels of interleukin (IL)-1β, IL-4, IL-6, iNOS, COX-2, and tumor necrosis factor-alpha (TNF)-α were reduced by CFE. CFE also inhibited the phosphorylation of NF-κB-p65, ERK, p-38, and JNK. Additionally, CFE showed inhibitory activity on TSLP and IL-4 expression in HaCaT cells stimulated with TNF-α/interferon-gamma (IFN-γ). Enhanced expression of factors related to skin barrier function, FLG, IVL, and LOR, was confirmed. These findings implied that CFE may be used as a therapeutic agent against AD due to its skin barrier-strengthening and anti-inflammatory activities, which are derived from natural marine products.
Collapse
Affiliation(s)
- A-Yeong Jang
- Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - JeongUn Choi
- Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - Weerawan Rod-In
- Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
- Department of Agricultural Science, Faculty of Agriculture Natural Resources and Environment, Naresuan University, Phitsanulok 65000 Thailand
| | - Ki Young Choi
- Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - Dae-Hee Lee
- Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
- Nbios Inc., Gangneung, Gangwon 25457, Republic of Korea
| | - Woo Jung Park
- Department of Marine Bio Food Science, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| |
Collapse
|
11
|
Cheng W, Di F, Li L, Pu C, Wang C, Zhang J. Anti-Photodamage Effect of Agaricus blazei Murill Polysaccharide on UVB-Damaged HaCaT Cells. Int J Mol Sci 2024; 25:4676. [PMID: 38731895 PMCID: PMC11083510 DOI: 10.3390/ijms25094676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024] Open
Abstract
UVB radiation is known to induce photodamage to the skin, disrupt the skin barrier, elicit cutaneous inflammation, and accelerate the aging process. Agaricus blazei Murill (ABM) is an edible medicinal and nutritional fungus. One of its constituents, Agaricus blazei Murill polysaccharide (ABP), has been reported to exhibit antioxidant, anti-inflammatory, anti-tumor, and immunomodulatory effects, which suggests potential effects that protect against photodamage. In this study, a UVB-induced photodamage HaCaT model was established to investigate the potential reparative effects of ABP and its two constituents (A1 and A2). Firstly, two purified polysaccharides, A1 and A2, were obtained by DEAE-52 cellulose column chromatography, and their physical properties and chemical structures were studied. A1 and A2 exhibited a network-like microstructure, with molecular weights of 1.5 × 104 Da and 6.5 × 104 Da, respectively. The effects of A1 and A2 on cell proliferation, the mitochondrial membrane potential, and inflammatory factors were also explored. The results show that A1 and A2 significantly promoted cell proliferation, enhanced the mitochondrial membrane potential, suppressed the expression of inflammatory factors interleukin-1β (IL-1β), interleukin-8 (IL-8), interleukin-6 (IL-6), and tumor necrosis factor α (TNF-α), and increased the relative content of filaggrin (FLG) and aquaporin-3 (AQP3). The down-regulated JAK-STAT signaling pathway was found to play a role in the response to photodamage. These findings underscore the potential of ABP to ameliorate UVB-induced skin damage.
Collapse
Affiliation(s)
- Wenjing Cheng
- School of Light Industry Science and Engineering, Beijing Technology & Business University, Beijing 100048, China
- Beijing Key Lab of Plant Resource Research and Development, Beijing 100048, China
- Institute of Cosmetic Regulatory Science, Beijing 100048, China
| | - Feiqian Di
- School of Light Industry Science and Engineering, Beijing Technology & Business University, Beijing 100048, China
- Beijing Key Lab of Plant Resource Research and Development, Beijing 100048, China
- Institute of Cosmetic Regulatory Science, Beijing 100048, China
| | - Luyao Li
- School of Light Industry Science and Engineering, Beijing Technology & Business University, Beijing 100048, China
- Beijing Key Lab of Plant Resource Research and Development, Beijing 100048, China
- Institute of Cosmetic Regulatory Science, Beijing 100048, China
| | - Chunhong Pu
- School of Light Industry Science and Engineering, Beijing Technology & Business University, Beijing 100048, China
- Beijing Key Lab of Plant Resource Research and Development, Beijing 100048, China
- Institute of Cosmetic Regulatory Science, Beijing 100048, China
| | - Changtao Wang
- School of Light Industry Science and Engineering, Beijing Technology & Business University, Beijing 100048, China
- Beijing Key Lab of Plant Resource Research and Development, Beijing 100048, China
- Institute of Cosmetic Regulatory Science, Beijing 100048, China
| | - Jiachan Zhang
- School of Light Industry Science and Engineering, Beijing Technology & Business University, Beijing 100048, China
- Beijing Key Lab of Plant Resource Research and Development, Beijing 100048, China
- Institute of Cosmetic Regulatory Science, Beijing 100048, China
| |
Collapse
|
12
|
Zakiudin DP, Thyssen JP, Zachariae C, Videm V, Øien T, Simpson MR. Filaggrin Mutation Status and Prevention of Atopic Dermatitis with Maternal Probiotic Supplementation. Acta Derm Venereol 2024; 104:adv24360. [PMID: 38655655 PMCID: PMC11064679 DOI: 10.2340/actadv.v104.24360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/22/2024] [Indexed: 04/26/2024] Open
Abstract
The World Allergy Organization recommends probiotics in the prevention of atopic dermatitis in high-risk populations. Mutations in the filaggrin gene (FLG) result in an increased risk of atopic dermatitis through disruption of the skin keratin layer. This exploratory study investigated whether the preventive effect of maternal probiotics was evident in children with and without FLG mutations. DNA was collected from children (n = 228) from the Probiotic in the Prevention of Allergy among Children in Trondheim (ProPACT) study. Samples were analysed for 3 common FLG mutations (R501X, R2447X, and 2282del4). Overall, 7% of children had heterozygous FLG mutations; each child had only one of the 3 mutations. Mutation status had no association with atopic dermatitis (RR = 1.1; 95% CI 0.5 to 2.3). The risk ratio (RR) for having atopic dermatitis following maternal probiotics was 0.6 (95% CI 0.4 to 0.9) and RR was similar if the child expressed an FLG mutation (RR = 0.6; 95% CI 0.1 to 4.1) or wildtype FLG (RR = 0.6; 95% CI 0.4 to 0.9). The preventive effect of probiotics for atopic dermatitis was also evident in children without FLG mutation. Larger confirmatory studies are needed.
Collapse
Affiliation(s)
- Dinastry Pramadita Zakiudin
- Department of Public Health and Nursing, NTNU - Norwegian University of Science and Technology, Trondheim, Norway; Clinic for Laboratory Medicine, St Olavs Hospital, Trondheim, Norway.
| | - Jacob P Thyssen
- Department of Dermatology and Venereology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Claus Zachariae
- Department of Clinical Medicine, University Hospital of Copenhagen Gentofte, Hellerup, Denmark; Department of Dermatology and Allergy, University Hospital of Copenhagen Gentofte, Hellerup, Denmark
| | - Vibeke Videm
- Department of Clinical and Molecular Medicine, NTNU - Norwegian University of Science and Technology, Trondheim, Norway; St. Olavs Hospital, Trondheim University Hospital, Department of Immunology and Transfusion Medicine, Trondheim, Norway
| | - Torbjørn Øien
- Department of Public Health and Nursing, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
| | - Melanie Rae Simpson
- Department of Public Health and Nursing, NTNU - Norwegian University of Science and Technology, Trondheim, Norway
| |
Collapse
|
13
|
Williams SF, Wan H, Chittock J, Brown K, Wigley A, Cork MJ, Danby SG. Characterization of skin barrier defects using infrared spectroscopy in patients with atopic dermatitis. Clin Exp Dermatol 2024; 49:466-477. [PMID: 38011533 DOI: 10.1093/ced/llad416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/30/2023] [Accepted: 11/20/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND Atopic dermatitis (AD) is characterized by skin barrier defects that are often measured by biophysical tools that observe the functional properties of the stratum corneum (SC). OBJECTIVES To employ in vivo infrared spectroscopy alongside biophysical measurements to analyse changes in the chemical composition of the SC in relation to AD severity. METHODS We conducted an observational cross-sectional cohort study where attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy measurements were collected on the forearm alongside surface pH, capacitance, erythema and transepidermal water loss (TEWL), combined with tape stripping, in a cohort of 75 participants (55 patients with AD stratified by phenotypic severity and 20 healthy controls). Common FLG variant alleles were genotyped. RESULTS Reduced hydration, elevated TEWL and redness were all associated with greater AD severity. Spectral analysis showed a reduction in 1465 cm-1 (full width half maximum) and 1340 cm-1 peak areas, indicative of less orthorhombic lipid ordering and reduced carboxylate functional groups, which correlated with clinical severity (lipid structure r = -0.59, carboxylate peak area r = -0.50). CONCLUSIONS ATR-FTIR spectroscopy is a suitable tool for the characterization of structural skin barrier defects in AD and has potential as a clinical tool for directing individual treatment based on chemical structural deficiencies.
Collapse
Affiliation(s)
- Samuel F Williams
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Helen Wan
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - John Chittock
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Kirsty Brown
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Andrew Wigley
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| | - Michael J Cork
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
- Sheffield Children's NHS Foundation Trust, Sheffield Children's Hospital, Western Bank, Sheffield, UK
- Sheffield Teaching Hospitals NHS Foundation Trust, The Royal Hallamshire Hospital, Sheffield, UK
| | - Simon G Danby
- Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield Medical School, Sheffield, UK
| |
Collapse
|
14
|
Steinbinder J, Sachslehner AP, Holthaus KB, Eckhart L. Comparative genomics of sirenians reveals evolution of filaggrin and caspase-14 upon adaptation of the epidermis to aquatic life. Sci Rep 2024; 14:9278. [PMID: 38653760 PMCID: PMC11039687 DOI: 10.1038/s41598-024-60099-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Accepted: 04/18/2024] [Indexed: 04/25/2024] Open
Abstract
The mammalian epidermis has evolved to protect the body in a dry environment. Genes of the epidermal differentiation complex (EDC), such as FLG (filaggrin), are implicated in the barrier function of the epidermis. Here, we investigated the molecular evolution of the EDC in sirenians (manatees and dugong), which have adapted to fully aquatic life, in comparison to the EDC of terrestrial mammals and aquatic mammals of the clade Cetacea (whales and dolphins). We show that the main subtypes of EDC genes are conserved or even duplicated, like late cornified envelope (LCE) genes of the dugong, whereas specific EDC genes have undergone inactivating mutations in sirenians. FLG contains premature stop codons in the dugong, and the ortholog of human CASP14 (caspase-14), which proteolytically processes filaggrin, is pseudogenized in the same species. As FLG and CASP14 have also been lost in whales, these mutations represent convergent evolution of skin barrier genes in different lineages of aquatic mammals. In contrast to the dugong, the manatee has retained functional FLG and CASP14 genes. FLG2 (filaggrin 2) is truncated in both species of sirenians investigated. We conclude that the land-to-water transition of sirenians was associated with modifications of the epidermal barrier at the molecular level.
Collapse
Affiliation(s)
- Julia Steinbinder
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | | | | | - Leopold Eckhart
- Department of Dermatology, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
15
|
Virolainen SJ, Satish L, Biagini JM, Chaib H, Chang WC, Dexheimer PJ, Dixon MR, Dunn K, Fletcher D, Forney C, Granitto M, Hestand MS, Hurd M, Kauffman K, Lawson L, Martin LJ, Peña LD, Phelan KJ, Shook M, Weirauch MT, Khurana Hershey GK, Kottyan LC. Filaggrin loss-of-function variants are associated with atopic dermatitis phenotypes in a diverse, early-life prospective cohort. JCI Insight 2024; 9:e178258. [PMID: 38564302 DOI: 10.1172/jci.insight.178258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/22/2024] [Indexed: 04/04/2024] Open
Abstract
Loss-of-function (LoF) variants in the filaggrin (FLG) gene are the strongest known genetic risk factor for atopic dermatitis (AD), but the impact of these variants on AD outcomes is poorly understood. We comprehensively identified genetic variants through targeted region sequencing of FLG in children participating in the Mechanisms of Progression of Atopic Dermatitis to Asthma in Children cohort. Twenty FLG LoF variants were identified, including 1 novel variant and 9 variants not previously associated with AD. FLG LoF variants were found in the cohort. Among these children, the presence of 1 or more FLG LoF variants was associated with moderate/severe AD compared with those with mild AD. Children with FLG LoF variants had a higher SCORing for Atopic Dermatitis (SCORAD) and higher likelihood of food allergy within the first 2.5 years of life. LoF variants were associated with higher transepidermal water loss (TEWL) in both lesional and nonlesional skin. Collectively, our study identifies established and potentially novel AD-associated FLG LoF variants and associates FLG LoF variants with higher TEWL in lesional and nonlesional skin.
Collapse
Affiliation(s)
- Samuel J Virolainen
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
- Immunology Graduate Program and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Latha Satish
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Division of Asthma Research, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Jocelyn M Biagini
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Division of Asthma Research, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Hassan Chaib
- Division of Human Genetics and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Wan Chi Chang
- Division of Asthma Research, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Phillip J Dexheimer
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | | | - Katelyn Dunn
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | | | - Carmy Forney
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Marissa Granitto
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | | | - Makenna Hurd
- Division of Asthma Research, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Kenneth Kauffman
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Lucinda Lawson
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Lisa J Martin
- Division of Human Genetics and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Loren Dm Peña
- Division of Human Genetics and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Kieran J Phelan
- Division of Asthma Research, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
- Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Molly Shook
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Matthew T Weirauch
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
- Immunology Graduate Program and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Divisions of Developmental Biology and Bioinformatics and Allergy and Immunology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| | - Gurjit K Khurana Hershey
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Division of Asthma Research, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
- Medical Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Leah C Kottyan
- Division of Human Genetics and
- Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
- Immunology Graduate Program and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
- Divisions of Developmental Biology and Bioinformatics and Allergy and Immunology, Cincinnati Children's Hospital, Cincinnati, Ohio, USA
| |
Collapse
|
16
|
Clabbers J, Boesjes C, Spekhorst L, van Gisbergen MW, Maas E, Marshall J, Janssen R, Janssen M, Zuithoff N, Steijlen P, de Graaf M, van Geel M, de Bruin-Weller M, Gostyński A. Influence of pathogenic filaggrin variants on dupilumab treatment in atopic dermatitis. J Allergy Clin Immunol 2024; 153:1155-1161.e4. [PMID: 38272373 DOI: 10.1016/j.jaci.2023.12.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 10/22/2023] [Accepted: 12/01/2023] [Indexed: 01/27/2024]
Abstract
BACKGROUND Pathogenic variants in filaggrin (FLG) are associated with an increased risk of atopic dermatitis (AD). OBJECTIVE We evaluated the influence of FLG variants on the effectiveness of dupilumab treatment in AD. METHODS This prospective observational study included adult AD patients treated with dupilumab from the BioDay registry. FLG was analyzed with single-molecule molecular inversion probe-targeted sequencing. Novel mutations were confirmed by Sanger sequencing. Eczema Area and Severity Index (EASI), Investigator Global Assessment (IGA), numeric rating scale (NRS) pruritus, Dermatology Quality of Life Index (DLQI), and Patient-Oriented Eczema Measure (POEM) were assessed at baseline and at weeks 16 and 52. The study was registered at ClinicalTrials.gov as NCT03549416. RESULTS Genetic analysis of the 285 included patients showed biallelic pathogenic variants (FLG-/-) in 41 (14%), monoallelic pathogenic variants (FLG-/+) in 64 (23%), and wild-type alleles (FLG+/+) in 180 patients (63%). Three novel pathogenic variants were found. We observed no clinically relevant differences in EASI, IGA, NRS pruritus, DLQI, or total POEM scores for patients with and without pathogenic FLG variants at all time points. The FLG-/- group showed significantly higher POEM flaking and dryness scores at week 16 (P < .001 and P = .002, respectively) and week 52 (P < .001 and P = .016, respectively) compared to FLG+/+ as well as significant differences compared to FLG-/+, while differences in delta scores were nonsignificant. CONCLUSION The effectiveness of dupilumab treatment in AD patients was not influenced by pathogenic FLG variants. However, patients with biallelic pathogenic FLG variants tended to have drier skin before and during dupilumab treatment compared to patients with monoallelic pathogenic variants or wild-type alleles.
Collapse
Affiliation(s)
- Julia Clabbers
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands; GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands; Department of Dermatology, Haga Hospital, The Hague, The Netherlands
| | - Celeste Boesjes
- Department of Dermatology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Lotte Spekhorst
- Department of Dermatology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Marike W van Gisbergen
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands; GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Emmy Maas
- Department of Dermatology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Josephine Marshall
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands
| | - Renske Janssen
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands; GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Miranda Janssen
- Department of Methodology and Statistics, CAPHRI Care and Public Health Research Institute, Maastricht University, Maastricht, The Netherlands
| | - Nicolaas Zuithoff
- Julius Centre for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Peter Steijlen
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands; GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | - Marlies de Graaf
- Department of Dermatology, University Medical Centre Utrecht, Utrecht, The Netherlands
| | - Michel van Geel
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands; Department of Clinical Genetics, Maastricht University Medical Centre+, Maastricht, The Netherlands; GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands
| | | | - Antoni Gostyński
- Department of Dermatology, Maastricht University Medical Centre+, Maastricht, The Netherlands; GROW School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands.
| |
Collapse
|
17
|
Kojima R, Miyake K, Shinohara R, Kushima M, Yui H, Otawa S, Horiuchi S, Yokomichi H, Akiyama Y, Ooka T, Yamagata Z. Association between filaggrin gene mutations and the clinical features of molluscum contagiosum: The Yamanashi Adjunct Study of the Japan Environment and Children's Study. J Dermatol 2024; 51:484-490. [PMID: 38414183 DOI: 10.1111/1346-8138.17157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/23/2024] [Accepted: 02/02/2024] [Indexed: 02/29/2024]
Abstract
Previous studies have reported swimming, atopic dermatitis, and filaggrin (FLG) gene mutations as risk factors for molluscum contagiosum (MC) infection. FLG gene mutations impair skin barrier function. The aim of this study was to determine the impact of FLG mutations on the incidence and clinical features of MC. We used data from 2036 children who participated in the Yamanashi Adjunct Study of the Japan Environment and Children's Study, a prospective, birth cohort study. A questionnaire for caregivers (when children were 4 and 8 years of age) asked about clinical features including previous MC incidence and treatment, number of MC lesions at first visit, and time to resolution. Participants underwent genotyping to detect six FLG mutations that are common in the Japanese population. A logistic regression model was used to analyze the association between MC incidence and FLG mutations, adjusted for potential confounders. The cumulative incidence of MC at age 8 years was 47.1%. Among participants with a history of MC, 67.6% had undergone curettage. FLG mutation was a significant risk factor for MC incidence (adjusted odds ratio [aOR] 1.69, 95% confidence interval [CI] 1.18-2.42). Swimming and atopic dermatitis were also significant risk factors for MC. There was no significant association between FLG mutation and the number of MC lesions at the first visit or the time to resolution of lesions. FLG mutation is a risk factor for MC incidence; however, FLG mutations do not affect the number of MC lesions at presentation or the time to resolution.
Collapse
Affiliation(s)
- Reiji Kojima
- Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Kunio Miyake
- Department of Epidemiology and Environmental Medicine, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Ryoji Shinohara
- Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Megumi Kushima
- Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Hideki Yui
- Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Sanae Otawa
- Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Sayaka Horiuchi
- Department of Epidemiology and Environmental Medicine, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Hiroshi Yokomichi
- Department of Epidemiology and Environmental Medicine, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Yuka Akiyama
- Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Tadao Ooka
- Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
| | - Zentaro Yamagata
- Department of Health Sciences, School of Medicine, University of Yamanashi, Chuo, Yamanashi, Japan
- Center for Birth Cohort Studies, University of Yamanashi, Chuo, Yamanashi, Japan
| |
Collapse
|
18
|
Holden C, Soares P, Fidler K, Tavendale R, Felton J, Mukhopadhyay S. Children with asthma and eczema carrying filaggrin loss-of-function mutations have increased antibiotic use through to adulthood. Clin Exp Allergy 2024; 54:291-293. [PMID: 38100258 DOI: 10.1111/cea.14440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 12/01/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023]
Affiliation(s)
- Ciara Holden
- Brighton & Sussex Medical School, Sussex, UK
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, Brighton, UK
| | - Patrícia Soares
- NOVA National School of Public Health, Public Health Research Centre, Comprehensive Health Research Center, NOVA University Lisbon, Lisbon, Portugal
| | - Katy Fidler
- Brighton & Sussex Medical School, Sussex, UK
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, Brighton, UK
| | - Roger Tavendale
- Division of Population Health and Genomics, University of Dundee, Ninewells Hospital and Medical School, Dundee, UK
| | | | - Somnath Mukhopadhyay
- Brighton & Sussex Medical School, Sussex, UK
- Academic Department of Paediatrics, Royal Alexandra Children's Hospital, Brighton, UK
| |
Collapse
|
19
|
Riedl R, Kühn A, Hupfer Y, Hebecker B, Peltner LK, Jordan PM, Werz O, Lorkowski S, Wiegand C, Wallert M. Characterization of Different Inflammatory Skin Conditions in a Mouse Model of DNCB-Induced Atopic Dermatitis. Inflammation 2024; 47:771-788. [PMID: 38150167 DOI: 10.1007/s10753-023-01943-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 11/10/2023] [Accepted: 12/04/2023] [Indexed: 12/28/2023]
Abstract
The mouse model of 2,4-dinitrochlorbenzene (DNCB)-induced human-like atopic dermatitis (hlAD) has been widely used to test novel treatment strategies and compounds. However, the study designs and methods are highly diverse, presenting different hlAD disease patterns that occur after sensitization and repeated challenge with DNCB on dorsal skin. In addition, there is a lack of information about the progression of the disease during the experiment and the achieved pheno- and endotypes, especially at the timepoint when therapeutic treatment is initiated. We here examine hlAD in a DNCB-induced BALB/cJRj model at different timepoints: (i) before starting treatment with dexamethasone, representing a standard drug control (day 12) and (ii) at the end of the experiment (day 22). Both timepoints display typical AD-associated characteristics: skin thickening, spongiosis, hyper- and parakeratosis, altered cytokine and gene expression, increased lipid mediator formation, barrier protein and antimicrobial peptide abnormalities, as well as lymphoid organ hypertrophy. Increased mast cell infiltration into the skin and elevated immunoglobulin E plasma concentrations indicate a type I allergy response. The DNCB-treated skin showed an extrinsic moderate sub-acute hlAD lesion at day 12 and an extrinsic mild sub-acute to chronic pheno- and endotype at day 22 with a dominating Th2 response. A dependency of the filaggrin formation and expression in correlation to the disease severity in the DNCB-treated skin was found. In conclusion, our study reveals a detailed classification of a hlAD at two timepoints with different inflammatory skin conditions and pheno- and endotypes, thereby providing a better understanding of the DNCB-induced hlAD model in BALB/cJRj mice.
Collapse
Affiliation(s)
- Rebecca Riedl
- Department of Dermatology, Dermatological Research Laboratory, Jena University Hospital, 07747, Jena, Germany
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Science, Friedrich Schiller University, 07743, Jena, Germany
| | - Annika Kühn
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Science, Friedrich Schiller University, 07743, Jena, Germany
| | - Yvonne Hupfer
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Science, Friedrich Schiller University, 07743, Jena, Germany
| | - Betty Hebecker
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Science, Friedrich Schiller University, 07743, Jena, Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, 07743, Jena, Germany
| | - Lukas K Peltner
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743, Jena, Germany
| | - Paul M Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743, Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University, 07743, Jena, Germany
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University, 07743, Jena, Germany
- Jena Center for Soft Matter (JCSM), Friedrich Schiller University, 07743, Jena, Germany
| | - Stefan Lorkowski
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Science, Friedrich Schiller University, 07743, Jena, Germany
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, 07743, Jena, Germany
| | - Cornelia Wiegand
- Department of Dermatology, Dermatological Research Laboratory, Jena University Hospital, 07747, Jena, Germany
| | - Maria Wallert
- Department of Biochemistry and Physiology of Nutrition, Institute of Nutritional Science, Friedrich Schiller University, 07743, Jena, Germany.
- Competence Cluster for Nutrition and Cardiovascular Health (nutriCARD) Halle-Jena-Leipzig, 07743, Jena, Germany.
| |
Collapse
|
20
|
Kobiela A, Hewelt-Belka W, Frąckowiak JE, Kordulewska N, Hovhannisyan L, Bogucka A, Etherington R, Piróg A, Dapic I, Gabrielsson S, Brown SJ, Ogg GS, Gutowska-Owsiak D. Keratinocyte-derived small extracellular vesicles supply antigens for CD1a-resticted T cells and promote their type 2 bias in the context of filaggrin insufficiency. Front Immunol 2024; 15:1369238. [PMID: 38585273 PMCID: PMC10995404 DOI: 10.3389/fimmu.2024.1369238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 03/07/2024] [Indexed: 04/09/2024] Open
Abstract
Introduction Exosome-enriched small extracellular vesicles (sEVs) are nanosized organelles known to participate in long distance communication between cells, including in the skin. Atopic dermatitis (AD) is a chronic inflammatory skin disease for which filaggrin (FLG) gene mutations are the strongest genetic risk factor. Filaggrin insufficiency affects multiple cellular function, but it is unclear if sEV-mediated cellular communication originating from the affected keratinocytes is also altered, and if this influences peptide and lipid antigen presentation to T cells in the skin. Methods Available mRNA and protein expression datasets from filaggrin-insufficient keratinocytes (shFLG), organotypic models and AD skin were used for gene ontology analysis with FunRich tool. sEVs secreted by shFLG and control shC cells were isolated from conditioned media by differential centrifugation. Mass spectrometry was carried out for lipidomic and proteomic profiling of the cells and sEVs. T cell responses to protein, peptide, CD1a lipid antigens, as well as phospholipase A2-digested or intact sEVs were measured by ELISpot and ELISA. Results Data analysis revealed extensive remodeling of the sEV compartment in filaggrin insufficient keratinocytes, 3D models and the AD skin. Lipidomic profiles of shFLGsEV showed a reduction in the long chain (LCFAs) and polyunsaturated fatty acids (PUFAs; permissive CD1a ligands) and increased content of the bulky headgroup sphingolipids (non-permissive ligands). This resulted in a reduction of CD1a-mediated interferon-γ T cell responses to the lipids liberated from shFLG-generated sEVs in comparison to those induced by sEVs from control cells, and an increase in interleukin 13 secretion. The altered sEV lipidome reflected a generalized alteration in the cellular lipidome in filaggrin-insufficient cells and the skin of AD patients, resulting from a downregulation of key enzymes implicated in fatty acid elongation and desaturation, i.e., enzymes of the ACSL, ELOVL and FADS family. Discussion We determined that sEVs constitute a source of antigens suitable for CD1a-mediated presentation to T cells. Lipids enclosed within the sEVs secreted on the background of filaggrin insufficiency contribute to allergic inflammation by reducing type 1 responses and inducing a type 2 bias from CD1a-restricted T cells, thus likely perpetuating allergic inflammation in the skin.
Collapse
Affiliation(s)
- Adrian Kobiela
- Laboratory of Experimental and Translational Immunology, Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical University of Gdańsk, Gdańsk, Poland
| | - Weronika Hewelt-Belka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gdańsk, Poland
| | - Joanna E. Frąckowiak
- Laboratory of Experimental and Translational Immunology, Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical University of Gdańsk, Gdańsk, Poland
| | - Natalia Kordulewska
- Department of Biochemistry, Faculty of Biology and Biotechnology, University of Warmia and Mazury, Olsztyn, Poland
| | - Lilit Hovhannisyan
- Laboratory of Experimental and Translational Immunology, Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical University of Gdańsk, Gdańsk, Poland
| | - Aleksandra Bogucka
- The Mass Spectrometry Laboratory, Intercollegiate Faculty of Biotechnology of University of Gdańsk and Medical University of Gdańsk, Gdańsk, Poland
| | - Rachel Etherington
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Artur Piróg
- International Centre for Cancer Vaccine Science, University of Gdańsk, Gdańsk, Poland
| | - Irena Dapic
- International Centre for Cancer Vaccine Science, University of Gdańsk, Gdańsk, Poland
| | - Susanne Gabrielsson
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Sara J. Brown
- Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom
| | - Graham S. Ogg
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Danuta Gutowska-Owsiak
- Laboratory of Experimental and Translational Immunology, Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical University of Gdańsk, Gdańsk, Poland
- MRC Human Immunology Unit, NIHR Biomedical Research Centre, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| |
Collapse
|
21
|
Shao S, Sun Z, Chu M, Chen J, Cao T, Swindell WR, Bai Y, Li Q, Ma J, Zhu Z, Schuler A, Helfrich Y, Billi AC, Li Z, Hao J, Xiao C, Dang E, Gudjonsson JE, Wang G. Formylpeptide receptor 1 contributes to epidermal barrier dysfunction-induced skin inflammation through NOD-like receptor C4-dependent keratinocyte activation. Br J Dermatol 2024; 190:536-548. [PMID: 37979162 DOI: 10.1093/bjd/ljad455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/17/2023] [Accepted: 11/05/2023] [Indexed: 11/20/2023]
Abstract
BACKGROUND Skin barrier dysfunction may both initiate and aggravate skin inflammation. However, the mechanisms involved in the inflammation process remain largely unknown. OBJECTIVES We sought to determine how skin barrier dysfunction enhances skin inflammation and molecular mechanisms. METHODS Skin barrier defect mice were established by tape stripping or topical use of acetone on wildtype mice, or filaggrin deficiency. RNA-Seq was employed to analyse the differentially expressed genes in mice with skin barrier defects. Primary human keratinocytes were transfected with formylpeptide receptor (FPR)1 or protein kinase R-like endoplasmic reticulum (ER) kinase (PERK) small interfering RNA to examine the effects of these gene targets. The expressions of inflammasome NOD-like receptor (NLR)C4, epidermal barrier genes and inflammatory mediators were evaluated. RESULTS Mechanical (tape stripping), chemical (acetone) or genetic (filaggrin deficiency) barrier disruption in mice amplified the expression of proinflammatory genes, with transcriptomic profiling revealing overexpression of formylpeptide receptor (Fpr1) in the epidermis. Treatment with the FPR1 agonist fMLP in keratinocytes upregulated the expression of the NLRC4 inflammasome and increased interleukin-1β secretion through modulation of ER stress via the PERK-eIF2α-C/EBP homologous protein pathway. The activation of the FPR1-NLRC4 axis was also observed in skin specimens from old healthy individuals with skin barrier defect or elderly mice. Conversely, topical administration with a FPR1 antagonist, or Nlrc4 silencing, led to the normalization of barrier dysfunction and alleviation of inflammatory skin responses in vivo. CONCLUSIONS In summary, our findings show that the FPR1-NLRC4 inflammasome axis is activated upon skin barrier disruption and may explain exaggerated inflammatory responses that are observed in disease states characterized by epidermal dysfunction. Pharmacological inhibition of FPR1 or NLRC4 represents a potential therapeutic target.
Collapse
Affiliation(s)
- Shuai Shao
- Department of Dermatology, Xijing Hospital
| | | | | | | | - Tianyu Cao
- Department of Dermatology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shannxi, 710032, China
| | - William R Swindell
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yaxing Bai
- Department of Dermatology, Xijing Hospital
| | | | - Jingyi Ma
- Department of Dermatology, Xijing Hospital
| | | | - Andrew Schuler
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Yolanda Helfrich
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Allison C Billi
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Zhiguo Li
- Department of Dermatology, Xijing Hospital
| | | | | | - Erle Dang
- Department of Dermatology, Xijing Hospital
| | | | - Gang Wang
- Department of Dermatology, Xijing Hospital
| |
Collapse
|
22
|
Chittock J, Kay L, Brown K, Cooke A, Lavender T, Cork MJ, Danby SG. Association between skin barrier development and early-onset atopic dermatitis: A longitudinal birth cohort study. J Allergy Clin Immunol 2024; 153:732-741.e8. [PMID: 37926123 DOI: 10.1016/j.jaci.2023.10.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 10/16/2023] [Accepted: 10/25/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND A diagnosis of atopic dermatitis (AD) is common during infancy; however, it is unclear whether differential skin barrier development defines this period and signals disease onset in predisposed individuals. OBJECTIVE We sought to study (NCT03143504) and assess the feasibility of remote skin testing from birth to monitor skin barrier maturation and model association with an AD diagnosis by age 12 months. METHODS Biophysical testing and infrared spectroscopy were conducted at the maternity ward and family home. Tape stripping collected samples for desquamatory protease and natural moisturizing factor analysis. The 4 common European filaggrin risk alleles were screened. RESULTS A total of 128 infants completed the study, with 20% developing mild disease. Significant changes in permeability barrier function, desquamatory protease activity, and molecular composition assessed spectroscopically were observed longitudinally, but only subtle evidence of differential skin barrier development was noted between infant subgroups. Common filaggrin risk alleles were strongly associated with early-onset disease and conferred a significant reduction in natural moisturizing factor and water content by age 4 weeks. Accounting for a family history of atopy, these parameters alongside a greater lipid/protein ratio and reduced chymotrypsin-like activity at birth were associated with AD. Measured in ambient conditions, transepidermal water loss did not signal disease risk at any stage. CONCLUSIONS Skin barrier dysfunction lacked an acquired modality but was considered proportional to cohort severity and suggests that a portfolio of tests used in a community setting has the potential to improve current AD risk evaluations from birth.
Collapse
Affiliation(s)
- John Chittock
- Sheffield Dermatology Research, Division of Clinical Medicine, University of Sheffield Medical School, Sheffield, United Kingdom.
| | - Linda Kay
- Sheffield Dermatology Research, Division of Clinical Medicine, University of Sheffield Medical School, Sheffield, United Kingdom
| | - Kirsty Brown
- Sheffield Dermatology Research, Division of Clinical Medicine, University of Sheffield Medical School, Sheffield, United Kingdom
| | - Alison Cooke
- Centre for NMAHP Research and Education Excellence, University Hospitals of North Midlands NHS Trust, Royal Stoke University Hospital and School of Nursing and Midwifery, Keele University, Keele, United Kingdom
| | - Tina Lavender
- Centre for Childbirth, Women's and Newborn Health, Department of International Public Health, Liverpool School of Tropical Medicine, Liverpool, United Kingdom
| | - Michael J Cork
- Sheffield Dermatology Research, Division of Clinical Medicine, University of Sheffield Medical School, Sheffield, United Kingdom; Paediatric Dermatology Clinic, Sheffield Children's Hospital, Sheffield, United Kingdom
| | - Simon G Danby
- Sheffield Dermatology Research, Division of Clinical Medicine, University of Sheffield Medical School, Sheffield, United Kingdom
| |
Collapse
|
23
|
Zhang H, Jia T, Che D, Peng B, Chu Z, Song X, Zeng W, Geng S. Decreased TET2/5-hmC reduces the integrity of the epidermal barrier via epigenetic dysregulation of filaggrin in psoriatic lesions. J Dermatol Sci 2024; 113:103-112. [PMID: 38331641 DOI: 10.1016/j.jdermsci.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/30/2023] [Accepted: 01/18/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND TET2 participates in tumor progression and intrinsic immune homeostasis via epigenetic regulation. TET2 has been reported to be involved in maintaining epithelial barrier homeostasis and inflammation. Abnormal epidermal barrier function and TET2 expression have been detected in psoriatic lesions. However, the mechanisms underlying the role of TET2 in psoriasis have not yet been elucidated. OBJECTIVE To define the role of TET2 in maintaining epithelial barrier homeostasis and the exact epigenetic mechanism in the dysfunction of the epidermal barrier in psoriasis. METHODS We analyzed human psoriatic skin lesions and datasets from the GEO database, and detected the expression of TET2/5-hmC together with barrier molecules by immunohistochemistry. We constructed epidermal-specific TET2 knockout mice to observe the effect of TET2 deficiency on epidermal barrier function via toluidine blue penetration assay. Further, we analyzed changes in the expression of epidermal barrier molecules by immunofluorescence in TET2-specific knockout mice and psoriatic model mice. RESULTS We found that decreased expression of TET2/5-hmC correlated with dysregulated barrier molecules in human psoriatic lesions. Epidermal-specific TET2 knockout mice showed elevated transdermal water loss associated with abnormal epidermal barrier molecules. Furthermore, we observed that TET2 knockdown in keratinocytes reduced filaggrin expression via filaggrin promoter methylation. CONCLUSION Aberrant epidermal TET2 affects the integrity of the epidermal barrier through the epigenetic dysregulation of epidermal barrier molecules, particularly filaggrin. Reduced TET2 expression is a critical factor contributing to an abnormal epidermal barrier in psoriasis.
Collapse
Affiliation(s)
- Huan Zhang
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Tao Jia
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Delu Che
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Bin Peng
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Zhaowei Chu
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an, China
| | - Xiangjin Song
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China
| | - Weihui Zeng
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an, China.
| | - Songmei Geng
- Department of Dermatology, Northwest Hospital, The Second Hospital Affiliated to Xi'an Jiaotong University, Xi'an, Shaanxi, China; Center for Dermatology Disease, Precision Medical Institute, Xi'an, China.
| |
Collapse
|
24
|
Cabalín C, Dibarrart M, Núñez-Rosales JJ, Faunes M, Avaca M, Ávalos P, Fabres J, Álvarez-Figueroa MJ, Vera-Kellet C, Silva-Valenzuela S, Sáez CG, Borzutzky A. Vernix caseosa reveals mechanistic clues linking maternal obesity to atopic dermatitis pathogenesis. J Allergy Clin Immunol 2024; 153:860-867.e1. [PMID: 38048884 DOI: 10.1016/j.jaci.2023.09.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 08/22/2023] [Accepted: 09/28/2023] [Indexed: 12/06/2023]
Abstract
BACKGROUND Maternal overweight and obesity have been associated with an increased risk of atopic dermatitis (AD) in the offspring, but the underlying mechanisms are unclear. Vernix caseosa (VC) is a proteolipid material covering the fetus produced during skin development. However, whether maternal prepregnancy weight excess influences fetal skin development is unknown. Characterizing the VC of newborns from mothers with prepregnancy overweight and obesity might reveal AD-prone alterations during fetal skin development. OBJECTIVE We sought to explore AD biomarkers and staphylococcal loads in VC from the offspring of mothers who were overweight/obese (O/O) before pregnancy versus in those from offspring of normal weight mothers. METHODS The VC of newborns of 14 O/O and 12 normal weight mothers were collected immediately after birth. Biomarkers were determined by ELISA and staphylococcal species by quantitative PCR. RESULTS The VC from the O/O group showed decreased expression of skin barrier proteins (filaggrin and loricrin) and increased levels of proinflammatory biomarkers (IgA, thymic stromal lymphopoietin [TSLP], S100A8, IL-25, and IL-33). No differences in concentrations of antimicrobial peptides and enzymes were detected. The VC from the O/O group had a lower Staphylococcus epidermidis and Staphylococcus hominis commensal bacterial load, whereas Staphylococcus aureus bacterial load was not significantly different between the 2 groups. Maternal body mass index was negatively correlated with VC filaggrin expression and S epidermidis load and was positively associated with TSLP concentration. One-year follow-up established that the offspring of O/O mothers had a higher incidence of AD that was specifically linked with decreased VC filaggrin expression and lower S epidermidis load. CONCLUSIONS VC from neonates of mothers with prepregnancy overweight and obesity exhibit skin barrier molecular alterations and staphylococcal dysbiosis that suggest early mechanistic clues to this population's increased risk of AD.
Collapse
Affiliation(s)
- Carolina Cabalín
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Marisol Dibarrart
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan José Núñez-Rosales
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Miriam Faunes
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Mónica Avaca
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Patricia Ávalos
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jorge Fabres
- Department of Neonatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Cristian Vera-Kellet
- Department of Dermatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Sergio Silva-Valenzuela
- Department of Dermatology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia G Sáez
- Department of Hematology and Oncology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Arturo Borzutzky
- Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.
| |
Collapse
|
25
|
Yun JH, Hong Y, Hong MH, Kim G, Lee JS, Woo RS, Lee J, Yang EJ, Kim IS. Anti-inflammatory effects of neuregulin-1 in HaCaT keratinocytes and atopic dermatitis-like mice stimulated with Der p 38. Cytokine 2024; 174:156439. [PMID: 38134557 DOI: 10.1016/j.cyto.2023.156439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 12/24/2023]
Abstract
Neuregulin (NRG)-1 plays fundamental roles in several organ systems after binding to its receptors, ErbB2 and ErbB4. This study examines the role of NRG-1 in atopic dermatitis (AD), a chronic skin disease that causes dryness, pruritus, and inflammation. In mice administered Der p 38, the skin presents AD-like symptoms including filaggrin downregulation and infiltration of neutrophils and eosinophils. Noticeably, there is an increased expression of NRG-1, ErbB2, and ErbB4 in the skin. Upregulation of these proteins is significantly correlated to the clinical skin severity score. In human keratinocyte HaCaT cells, exposure to Der p 38 decreased filaggrin expression, and NRG-1 alone had no effect on the expression. However, co-treatment of Der p 38 with NRG-1 enhanced the filaggrin expression decreased by Der p 38. Pre-treatment with AG879 (an ErbB2 inhibitor) or ErbB4 siRNA blocked the recovery of filaggrin expression in the cells after co-treatment with Der p 38 and NRG-1. Der p 38 treatment enhanced the secretion of interleukin-6 (IL-6), IL-8, and monocyte chemoattractant protein-1 (MCP-1). Co-treatment of Der p 38 with NRG-1 lowered the cytokine secretion increased by Der p 38, although NRG-1 alone was not effective on cytokine alteration. Neutrophil apoptosis was not altered by NRG-1 or supernatants of cells treated with NRG-1, but the cell supernatants co-treated with Der p 38 and NRG-1 blocked the anti-apoptotic effects of Der p 38-treated supernatants on neutrophils, which was involved in the activation of caspase 9 and caspase 3. Taken together, we determined that NRG-1 has anti-inflammatory effects in AD triggered by Der p 38. These results will pave the way to understanding the functions of NRG-1 and in the future development of AD treatment.
Collapse
Affiliation(s)
- Jeong Hee Yun
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Uijeongbu 11759, Republic of Korea
| | - Yujin Hong
- Department of Senior Healthcare, Graduate School, Eulji University, Uijeongbu 11759, Republic of Korea
| | - Min Hwa Hong
- Department of Senior Healthcare, Graduate School, Eulji University, Uijeongbu 11759, Republic of Korea
| | - Geunyeong Kim
- Department of Senior Healthcare, Graduate School, Eulji University, Uijeongbu 11759, Republic of Korea
| | - Ji-Sook Lee
- Department of Clinical Laboratory Science, Wonkwang Health Science University, Iksan 54538, Republic of Korea
| | - Ran-Sook Woo
- Department of Anatomy and Neuroscience, Eulji University School of Medicine, Daejeon 34824, Republic of Korea
| | - Juram Lee
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Uijeongbu 11759, Republic of Korea
| | - Eun Ju Yang
- Department of Biomedical Laboratory Science, Daegu Haany University, Gyeongsan 38610, Republic of Korea.
| | - In Sik Kim
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Uijeongbu 11759, Republic of Korea; Department of Senior Healthcare, Graduate School, Eulji University, Uijeongbu 11759, Republic of Korea.
| |
Collapse
|
26
|
Stefanovic N, Irvine AD. Filaggrin and beyond: New insights into the skin barrier in atopic dermatitis and allergic diseases, from genetics to therapeutic perspectives. Ann Allergy Asthma Immunol 2024; 132:187-195. [PMID: 37758055 DOI: 10.1016/j.anai.2023.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/22/2023] [Accepted: 09/19/2023] [Indexed: 10/03/2023]
Abstract
Atopic dermatitis (AD) is the most common inflammatory skin disease worldwide, affecting 20% of children and 5% of adults. One critical component in the pathophysiology of AD is the epidermal skin barrier, with its outermost layer, the stratum corneum (SC), conferring biochemical properties that enable resilience against environmental threats and maintain homeostasis. The skin barrier may be conceptualized as a key facilitator of complex interactions between genetics, host immunity, the cutaneous microbiome, and environmental exposures. The key genetic risk factor for AD development and persistence is a loss-of-function mutation in FLG, with recent advances in genomics focusing on rare variant discovery, establishment of pathogenic mechanisms, and exploration of the role of other epidermal differentiation complex gene variants in AD. Aberrant type 2 inflammatory responses down-regulate the transcription of key epidermal barrier genes, alter the composition of SC lipids, and induce further injury through a neurocutaneous feedback loop and the itch-scratch cycle. The dysbiotic epidermis exhibits reduced bacterial diversity and enhanced colonization with Staphylococcus and Malassezia species, which contribute to both direct barrier injury through the action of bacterial toxins and perpetuation of the inflammatory cascades. Enhanced understanding of each of the pathogenic mechanisms underpinning barrier disruption has led to the development of novel topical and systemic molecules, including interleukin (IL)-4Ra, IL-13, PDE4, and Janus-associated kinase inhibitors, whose clinical effectiveness exceeds conventional treatment modalities. In this narrative review, we aim to summarize the current understanding of the above-mentioned pathophysiological and therapeutic mechanisms, with a focus on the genetic, cellular, and molecular mechanisms underpinning AD development.
Collapse
Affiliation(s)
| | - Alan D Irvine
- Clinical Medicine, Trinity College Dublin, Dublin, Ireland.
| |
Collapse
|
27
|
Zhong Y, Huang T, Li X, Luo P, Zhang B. GSDMD suppresses keratinocyte differentiation by inhibiting FLG expression and attenuating KCTD6-mediated HDAC1 degradation in atopic dermatitis. PeerJ 2024; 12:e16768. [PMID: 38250727 PMCID: PMC10798152 DOI: 10.7717/peerj.16768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/15/2023] [Indexed: 01/23/2024] Open
Abstract
Background Recent studies have shown that activated pyroptosis in atopic dermatitis (AD) switches inflammatory processes and causes abnormal cornification and epidermal barrier dysfunction. Little research has focused on the interaction mechanism between pyroptosis-related genes and human keratinocyte differentiation. Methods The AD dataset from the Gene Expression Omnibus (GEO) was used to identify differently expressed pyroptosis-related genes (DEPRGs). Hub genes were identified and an enrichment analysis was performed to select epithelial development-related genes. Lesions of AD patients were detected via immunohistochemistry (IHC) to verify the hub gene. Human keratinocytes cell lines, gasdermin D (GSDMD) overexpression, Caspase1 siRNA, Histone Deacetylase1 (HDAC1) siRNA, and HDAC1 overexpression vectors were used for gain-and-loss-of-function experiments. Regulation of cornification protein was determined by qPCR, western blot (WB), immunofluorescence (IF), dual-luciferase reporter assay, co-immunoprecipitation (Co-IP), and chromatin immunoprecipitation (ChIP). Results A total of 27 DEPRGs were identified between either atopic dermatitis non-lesional skin (ANL) and healthy control (HC) or atopic dermatitis lesional skin (AL) and HC. The enrichment analysis showed that these DEPRGs were primarily enriched in the inflammatory response and keratinocytes differentiation. Of the 10 hub genes identified via the protein-protein interaction network, only GSDMD was statistically and negatively associated with the expression of epithelial tight junction core genes. Furthermore, GSDMD was upregulated in AD lesions and inhibited human keratinocyte differentiation by reducing filaggrin (FLG) expression. Mechanistically, GSDMD activated by Caspase1 reduced FLG expression via HDAC1. HDAC1 decreased FLG expression by reducing histone acetylation at the FLG promoter. In addition, GSDMD blocked the interaction of Potassium Channel Tetramerization Domain Containing 6 (KCTD6) and HDAC1 to prohibit HDAC1 degradation. Conclusion This study revealed that GSDMD was upregulated in AD lesions and that GSDMD regulated keratinocytes via epigenetic modification, which might provide potential therapeutic targets for AD.
Collapse
Affiliation(s)
- Yi Zhong
- Department of Dermatology, Guangzhou Women and Children’s Medical Center, Guangzhou, China
| | - Taoyuan Huang
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Guangzhou, China
| | - Xiaoli Li
- Department of Dermatology, Guangzhou Women and Children’s Medical Center, Guangzhou, China
| | - Peiyi Luo
- Department of Dermatology, Guangzhou Women and Children’s Medical Center, Guangzhou, China
| | - Bingjun Zhang
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| |
Collapse
|
28
|
Steinbinder J, Sachslehner AP, Holthaus KB, Eckhart L. Comparative genomics of monotremes provides insights into the early evolution of mammalian epidermal differentiation genes. Sci Rep 2024; 14:1437. [PMID: 38228724 PMCID: PMC10791643 DOI: 10.1038/s41598-024-51926-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 01/11/2024] [Indexed: 01/18/2024] Open
Abstract
The function of the skin as a barrier against the environment depends on the differentiation of epidermal keratinocytes into highly resilient corneocytes that form the outermost skin layer. Many genes encoding structural components of corneocytes are clustered in the epidermal differentiation complex (EDC), which has been described in placental and marsupial mammals as well as non-mammalian tetrapods. Here, we analyzed the genomes of the platypus (Ornithorhynchus anatinus) and the echidna (Tachyglossus aculeatus) to determine the gene composition of the EDC in the basal clade of mammals, the monotremes. We report that mammal-specific subfamilies of EDC genes encoding small proline-rich proteins (SPRRs) and late cornified envelope proteins as well as single-copy EDC genes such as involucrin are conserved in monotremes, suggesting that they have originated in stem mammals. Monotremes have at least one gene homologous to the group of filaggrin (FLG), FLG2 and hornerin (HRNR) in placental mammals, but no clear one-to-one pairwise ortholog of either FLG, FLG2 or HRNR. Caspase-14, a keratinocyte differentiation-associated protease implicated in the processing of filaggrin, is encoded by at least 3 gene copies in the echidna. Our results reveal evolutionarily conserved and clade-specific features of the genetic regulation of epidermal differentiation in monotremes.
Collapse
Affiliation(s)
- Julia Steinbinder
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | | | | | - Leopold Eckhart
- Department of Dermatology, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
29
|
Li MWY, Burnett L, Dai P, Avery DT, Noori T, Voskoboinik I, Shah PR, Tatian A, Tangye SG, Gray PE, Ma CS. Filaggrin-Associated Atopic Skin, Eye, Airways, and Gut Disease, Modifying the Presentation of X-Linked Reticular Pigmentary Disorder (XLPDR). J Clin Immunol 2024; 44:38. [PMID: 38165470 DOI: 10.1007/s10875-023-01637-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND X-linked reticular pigmentary disorder (XLPDR) is a rare condition characterized by skin hyperpigmentation, ectodermal features, multiorgan inflammation, and recurrent infections. All probands identified to date share the same intronic hemizygous POLA1 hypomorphic variant (NM_001330360.2(POLA1):c.1393-354A > G) on the X chromosome. Previous studies have supported excessive type 1 interferon (IFN) inflammation and natural killer (NK) cell dysfunction in disease pathogenesis. Common null polymorphisms in filaggrin (FLG) gene underlie ichthyosis vulgaris and atopic predisposition. CASE A 9-year-old boy born to non-consanguineous parents developed eczema with reticular skin hyperpigmentation in early infancy. He suffered recurrent chest infections with chronic cough, clubbing, and asthma, moderate allergic rhinoconjunctivitis with keratitis, multiple food allergies, and vomiting with growth failure. Imaging demonstrated bronchiectasis, while gastroscopy identified chronic eosinophilic gastroduodenitis. Interestingly, growth failure and bronchiectasis improved over time without specific treatment. METHODS Whole-genome sequencing (WGS) using Illumina short-read sequencing was followed by both manual and orthogonal automated bioinformatic analyses for single-nucleotide variants, small insertions/deletions (indels), and larger copy number variations. NK cell cytotoxic function was assessed using 51Cr release and degranulation assays. The presence of an interferon signature was investigated using a panel of six interferon-stimulated genes (ISGs) by QPCR. RESULTS WGS identified a de novo hemizygous intronic variant in POLA1 (NM_001330360.2(POLA1):c.1393-354A > G) giving a diagnosis of XLPDR, as well as a heterozygous nonsense FLG variant (NM_002016.2(FLG):c.441del, NP_0020.1:p.(Arg151Glyfs*43)). Compared to healthy controls, the IFN signature was elevated although the degree moderated over time with the improvement in his chest disease. NK cell functional studies showed normal cytotoxicity and degranulation. CONCLUSION This patient had multiple atopic manifestations affecting eye, skin, chest, and gut, complicating the presentation of XLPDR. This highlights that common FLG polymorphisms should always be considered when assessing genotype-phenotype correlations of other genetic variation in patients with atopic symptoms. Additionally, while the patient exhibited an enhanced IFN signature, he does not have an NK cell defect, suggesting this may not be a constant feature of XLPDR.
Collapse
Affiliation(s)
- Margaret W Y Li
- Department of Allergy and Immunology, Sydney Children's Hospital, Sydney, Australia.
- School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia.
| | - Leslie Burnett
- Garvan Institute of Medical Research, Sydney, Australia
- Clinical Immunogenomics Research Consortium Australasia (CIRCA), Sydney, Australia
- School of Clinical Medicine, Faculty of Medicine and Health, St Vincent's Healthcare Clinical Campus, UNSW Sydney, Sydney, Australia
| | - Pei Dai
- Garvan Institute of Medical Research, Sydney, Australia
- Clinical Immunogenomics Research Consortium Australasia (CIRCA), Sydney, Australia
| | | | | | | | - Parth R Shah
- Department of Ophthalmology, Sydney Children's Hospital, Sydney, Australia
| | - Artiene Tatian
- School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Department of Dermatology, Sydney Children's Hospital, Sydney, Australia
| | - Stuart G Tangye
- School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Garvan Institute of Medical Research, Sydney, Australia
- Clinical Immunogenomics Research Consortium Australasia (CIRCA), Sydney, Australia
| | - Paul E Gray
- Department of Allergy and Immunology, Sydney Children's Hospital, Sydney, Australia.
- Clinical Immunogenomics Research Consortium Australasia (CIRCA), Sydney, Australia.
- School of Medicine, Western Sydney University, Sydney, Australia.
| | - Cindy S Ma
- School of Clinical Medicine, Faculty of Medicine and Health, UNSW Sydney, Sydney, Australia
- Garvan Institute of Medical Research, Sydney, Australia
- Clinical Immunogenomics Research Consortium Australasia (CIRCA), Sydney, Australia
| |
Collapse
|
30
|
Briot J, Arbey E, Goudounèche D, Bernard D, Simon M, Méchin MC. Human filaggrin monomer does not seem to be a proteasome target. Exp Dermatol 2024; 33:e14772. [PMID: 36807394 DOI: 10.1111/exd.14772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/31/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023]
Abstract
Absence of a functional proteasome in the suprabasal layers of the epidermis is responsible for keratosis linearis with ichthyosis congenital and sclerosing keratoderma syndrome. Patient epidermis shows hypergranulosis associated with abnormally shaped keratohyalin granules and abnormal distribution of filaggrin in the Stratum granulosum and Stratum corneum. This suggests that the proteasome is involved in the degradation of filaggrin. To test this hypothesis, the proteasome proteolytic activity was inhibited in 3D reconstructed human epidermis (RHE) with the specific clasto-lactacystin β-lactone inhibitor. Confirming the efficacy of inhibition, ubiquitinated proteins accumulated in treated RHEs as compared to controls. Levels of urocanic acid (UCA) and pyrrolidone carboxylic acid (PCA), the end products of filaggrin degradation, were reduced. However, neither filaggrin accumulation nor appearance of filaggrin-derived peptides were observed. On the contrary, the amount of filaggrin was shown to decrease, and a similar tendency was observed for profilaggrin, its precursor. Accumulation of small cytoplasmic vesicles associated with a significant increase in autophagy markers indicated activation of the autophagy process upon proteasome inhibition. Taken together, these results suggest that the perturbation of UCA and PCA production after proteasome inhibition was probably due to down-regulation of filaggrin expression rather than to blocking of filaggrin proteolysis.
Collapse
Affiliation(s)
- Julie Briot
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, UPS, Toulouse, France
| | - Eric Arbey
- L'Oréal Research and Innovation, Aulnay-sous-bois, Aulnay-sous-bois, France
| | - Dominique Goudounèche
- Centre de Microscopie Electronique Appliquée à la Biologie, Université de Toulouse, Toulouse, France
| | - Dominique Bernard
- L'Oréal Research and Innovation, Aulnay-sous-bois, Aulnay-sous-bois, France
| | - Michel Simon
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, UPS, Toulouse, France
| | - Marie-Claire Méchin
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, UPS, Toulouse, France
| |
Collapse
|
31
|
Liljedahl ER, Gliga A, de Paula HK, Engfeldt M, Julander A, Lidén C, Lindh C, Broberg K. Inflammation-related proteins in blood after dermal exposure to some common chemicals depend on the skin barrier gene filaggrin - a human experimental study. Environ Toxicol Pharmacol 2024; 105:104346. [PMID: 38135200 DOI: 10.1016/j.etap.2023.104346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 12/18/2023] [Indexed: 12/24/2023]
Abstract
Filaggrin (FLG), a skin barrier protein, is associated with higher dermal uptake of some chemicals in carriers of loss-of-function (null) mutations. This study investigates FLG mutations and systemic effects following dermal exposure to chemicals. Individuals (n = 23 FLG null, n = 31 FLG wt) were simultaneously exposed to pyrimethanil, pyrene, oxybenzone, and nickel ions for 4 h. Pre- and post-exposure, 25-hydroxyvitamin D3 (25(OH)D3, LC-MS/MS) and 92 inflammation-related proteins (proximity-extension assay) were measured. FLG null carriers exhibited significantly higher 25(OH)D3 concentrations than wt carriers, both pre- and post-exposure. Eleven proteins differed in abundance post- vs pre-exposure among FLG null carriers, and 22 proteins among wt carriers (three proteins overlapped). Twelve proteins showed median differences (post- vs pre-exposure) between FLG null and wt carriers. Overall, FLG null carriers showed an increase, while FLG wt carriers showed a decrease in inflammation-related proteins. These findings suggest FLG-dependent differences in susceptibility to systemic effects following simultaneous dermal chemical exposure.
Collapse
Affiliation(s)
- Emelie Rietz Liljedahl
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Anda Gliga
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Helena Korres de Paula
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Malin Engfeldt
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Department of Occupational and Environmental Medicine, Region Skåne, Lund, Sweden
| | - Anneli Julander
- Sustainable Working life, IVL Swedish Environmental Research Institute, Stockholm, Sweden; Unit of Integrative Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Carola Lidén
- Unit of Integrative Toxicology, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| |
Collapse
|
32
|
Jang YN, Lee JO, Lee JM, Park AY, Kim YJ, Kim SY, Seok J, Yoo KH, Kim BJ. Exosomes derived from human dermal fibroblasts (HDFn-Ex) alleviate DNCB-induced atopic dermatitis (AD) via PPARα. Exp Dermatol 2024; 33:e14970. [PMID: 37975541 DOI: 10.1111/exd.14970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/30/2023] [Accepted: 09/04/2023] [Indexed: 11/19/2023]
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disease. Skin barrier dysfunction is the initial step in the development of AD. Recently, exosomes have been considered as potential cell-free medicine for skin defects such as aging, psoriasis and wounds. The aim of this study was to investigate the effects of human dermal fibroblast-neonatal-derived exosome (HDFn-Ex) on AD. HDFn-Ex increased the expression of peroxisome proliferator activated receptor α (PPARα) and alleviated the 1-chloro-2,4-dinitrobenzene (DNCB)-mediated downregulation of filaggrin, involucrin, loricrin, hyaluronic acid synthase 1 (HAS1) and HAS2 in human keratinocyte HaCaT cells. However, these effects were inhibited by the PPARα antagonist GW6471. In the artificial skin model, HDFn-Ex significantly inhibited DNCB-induced epidermal hyperplasia and the decrease in filaggrin and HAS1 levels via a PPARα. In the DNCB-induced AD-like mouse model, HDFn-Ex administration reduced epidermis thickening and mast cell infiltration into the dermis compared to DNCB treatment. Moreover, the decreases in PPARα, filaggrin and HAS1 expression, as well as the increases in IgE and IL4 levels induced by DNCB treatment were reversed by HDFn-Ex. These effects were blocked by pre-treatment with GW6471. Furthermore, HDFn-Ex exhibited an anti-inflammatory effect by inhibiting the DNCB-induced increases in IκBα phosphorylation and TNF-α expression. Collectively, HDFn-Ex exhibited a protective effect on AD. Notably, these effects were regulated by PPARα. Based on our results, we suggest that HDFn-Ex is a potential candidate for treating AD by recovering skin barrier dysfunction and exhibiting anti-inflammatory activity.
Collapse
Affiliation(s)
- You Na Jang
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Jung Ok Lee
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - Jung Min Lee
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
| | - A Yeon Park
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Yu Jin Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Su Young Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Joon Seok
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Kwang Ho Yoo
- Department of Dermatology, Chung-Ang University Gwang-Myeong Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Beom Joon Kim
- Department of Medicine, Graduate School, Chung-Ang University, Seoul, South Korea
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, South Korea
| |
Collapse
|
33
|
Haider S, Granell R, Curtin JA, Holloway JW, Fontanella S, Hasan Arshad S, Murray CS, Cullinan P, Turner S, Roberts G, Simpson A, Custovic A. Identification of eczema clusters and their association with filaggrin and atopic comorbidities: analysis of five birth cohorts. Br J Dermatol 2023; 190:45-54. [PMID: 37935633 PMCID: PMC10733627 DOI: 10.1093/bjd/ljad326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/23/2023] [Indexed: 11/09/2023]
Abstract
BACKGROUND Longitudinal modelling of the presence/absence of current eczema through childhood has identified similar phenotypes, but their characteristics often differ between studies. OBJECTIVES To demonstrate that a more comprehensive description of longitudinal pattern of symptoms may better describe trajectories than binary information on eczema presence. METHODS We derived six multidimensional variables of eczema spells from birth to 18 years of age (including duration, temporal sequencing and the extent of persistence/recurrence). Spells were defined as consecutive observations of eczema separated by no eczema across 5 epochs in five birth cohorts: infancy (first year); early childhood (age 2-3 years); preschool/early school age (4-5 years); middle childhood (8-10 years); adolescence (14-18 years). We applied Partitioning Around Medoids clustering on these variables to derive clusters of the temporal patterns of eczema. We then investigated the stability of the clusters, within-cluster homogeneity and associated risk factors, including FLG mutations. RESULTS Analysis of 7464 participants with complete data identified five clusters: (i) no eczema (51.0%); (ii) early transient eczema (21.6%); (iii) late-onset eczema (LOE; 8.1%); (iv) intermittent eczema (INT; 7.5%); and (v) persistent eczema (PE; 11.8%). There was very-high agreement between the assignment of individual children into clusters when using complete or imputed (n = 15 848) data (adjusted Rand index = 0.99; i.e. the clusters were very stable). Within-individual symptom patterns across clusters confirmed within-cluster homogeneity, with consistent patterns of symptoms among participants within each cluster and no overlap between the clusters. Clusters were characterized by differences in associations with risk factors (e.g. parental eczema was associated with all clusters apart from LOE; sensitization to inhalant allergens was associated with all clusters, with the highest risk in the PE cluster). All clusters apart from LOE were associated with FLG mutations. Of note, the strongest association was for PE [relative risk ratio (RRR) 2.70, 95% confidence interval (CI) 2.24-3.26; P < 0.001] followed by INT (RRR 2.29, 95% CI 1.82-2.88; P < 0.001). CONCLUSIONS Clustering of multidimensional variables identified stable clusters with different genetic architectures. Using multidimensional variables may capture eczema development and derive stable and internally homogeneous clusters. However, deriving homogeneous symptom clusters does not necessarily mean that these are underpinned by completely unique mechanisms.
Collapse
Affiliation(s)
- Sadia Haider
- National Heart and Lung Institute, Imperial College London, UK
- NIHR Imperial Biomedical Research Centre (BRC), London, UK
| | - Raquel Granell
- MRC Integrative Epidemiology Unit, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK
| | - John A Curtin
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - John W Holloway
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University Hospitals Southampton NHS Foundation Trust, Southampton, UK
| | - Sara Fontanella
- National Heart and Lung Institute, Imperial College London, UK
- NIHR Imperial Biomedical Research Centre (BRC), London, UK
| | - Syed Hasan Arshad
- NIHR Southampton Biomedical Research Centre, University Hospitals Southampton NHS Foundation Trust, Southampton, UK
- David Hide Asthma and Allergy Research Centre, Newport, Isle of Wight, UK
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Clare S Murray
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - Paul Cullinan
- National Heart and Lung Institute, Imperial College London, UK
| | - Stephen Turner
- Royal Aberdeen Children’s Hospital, NHS Grampian, Aberdeen, UK
- Child Health, University of Aberdeen, Aberdeen, UK
| | - Graham Roberts
- Human Development and Health, Faculty of Medicine, University of Southampton, Southampton, UK
- NIHR Southampton Biomedical Research Centre, University Hospitals Southampton NHS Foundation Trust, Southampton, UK
- David Hide Asthma and Allergy Research Centre, Newport, Isle of Wight, UK
| | - Angela Simpson
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Unit, Manchester University NHS Foundation Trust, Manchester, UK
| | - Adnan Custovic
- National Heart and Lung Institute, Imperial College London, UK
- NIHR Imperial Biomedical Research Centre (BRC), London, UK
| |
Collapse
|
34
|
Greater understanding about differences in the long-term course of eczema and their risk factors in children. Br J Dermatol 2023; 190:e5. [PMID: 38124523 DOI: 10.1093/bjd/ljad464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
|
35
|
Ibáñez-Cortés M, Martín-Piedra MÁ, Blanco-Elices C, García-García ÓD, España-López A, Fernández-Valadés R, Sánchez-Quevedo MDC, Alaminos M, Chato-Astrain J, Garzón I. Histological characterization of the human masticatory oral mucosa. A histochemical and immunohistochemical study. Microsc Res Tech 2023; 86:1712-1724. [PMID: 37650503 DOI: 10.1002/jemt.24398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/19/2023] [Accepted: 08/06/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Histology of human oral mucosa is closely related with its function and anatomical location, and a proper characterization of the human masticatory oral mucosa could be very useful in periodontal pathology. OBJECTIVE In the present work, we have carried out a comprehensive study in order to determine the main histological features of parakeratinized (POM) and orthokeratinized (OOM) masticatory human oral mucosa using light and electron microscopy. METHODS To perform this, we have used several histological, histochemical and immunohistochemical methods to detect key markets at the epithelial, basement membrane and connective tissue levels. RESULTS Our results demonstrated that POM and OOM share many histological similarities, as expected. However, important differences were observed at the epithelial layer of POM, that was significantly thicker than the epithelial layer found in OOM, especially due to a higher number of cells at the stratum spinosum. The expression pattern of CK10 and filaggrin revealed intense signal expression in OOM as compared to POM. Collagen and proteoglycans were more abundant in OOM stroma than in POM. No differences were found for blood vessels and basement membrane. CONCLUSION These results may contribute to a better understanding of the pathological conditions affecting the human masticatory oral mucosa. In addition, these findings could be useful for the generation of different types of oral mucosa by tissue engineering techniques. RESEARCH HIGHLIGHTS Microscopical features of parakeratinized and orthokeratinized masticatory human oral mucosa showed important differences at both, epithelial and stromal levels. Parakeratinized masticatory human oral mucosa exert thicker epithelial layer, especially, at the stratum spinosum in comparison to orthokeratinized human oral mucosa. Cytokeratin 10 and filaggrin human epithelial markers were intensively expressed in orthokeratinized masticatory human oral mucosa in comparison to parakeratinized masticatory human oral mucosa. At the stromal level, orthokeratinized masticatory human oral mucosa exhibit higher levels of collagen and proteoglycans than parakeratinized masticatory oral mucosa. The deep knowledge of histological features of masticatory oral mucosa could lead to a better understanding of oral mucosa pathology and advanced treatments.
Collapse
Affiliation(s)
- Miguel Ibáñez-Cortés
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Doctoral Program in Biomedicine, University of Granada, Granada, Spain
| | - Miguel Ángel Martín-Piedra
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Cristina Blanco-Elices
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Óscar Darío García-García
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Antonio España-López
- Craniofacial Malformations and Cleft Lip and Palate Management Unit, University Hospital Virgen de las Nieves, Granada, Spain
| | - Ricardo Fernández-Valadés
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
- Division of Pediatric Surgery, University Hospital Virgen de las Nieves, Granada, Spain
| | - María Del Carmen Sánchez-Quevedo
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Miguel Alaminos
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Jesús Chato-Astrain
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| | - Ingrid Garzón
- Tissue Engineering Group, Department of Histology, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria ibs. GRANADA, Granada, Spain
| |
Collapse
|
36
|
Lester MR. Filaggrin Loss-of Function Mutations are Associated With Persistence of Egg and Milk Allergy. Pediatrics 2023; 152:S32. [PMID: 38038526 DOI: 10.1542/peds.2023-064344j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2023] Open
|
37
|
Makino T, Mizawa M, Takemoto K, Yamamoto S, Shimizu T. Altered expression of S100 fused-type proteins in an atopic dermatitis skin model. Exp Dermatol 2023; 32:2160-2165. [PMID: 36995036 DOI: 10.1111/exd.14797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 03/01/2023] [Accepted: 03/13/2023] [Indexed: 03/31/2023]
Abstract
Atopic dermatitis (AD) is a chronic inflammatory skin disorder with elevated interleukin (IL)-4 and IL-13 signatures and extensive barrier dysfunction, which is correlated with the downregulation of filaggrin (FLG). FLG is a member of the S100 fused-type protein family and this family also includes cornulin (CRNN), filaggrin-2 (FLG2), hornerin (HRNR) repetin (RPTN), trichohyalin (TCHH) and trichohyalin-like 1 (TCHHL1). The present study aimed to examine the effects of IL-4 and IL-13 and the downregulation of FLG on the expression of S100 fused-type proteins using a three-dimensional (3D) AD skin model by immunohistochemical study and quantitative polymerase chain reaction. In the 3D AD skin model, which was generated by a stimulation of recombinant IL-4 and IL-13, the expression of FLG, FLG2, HRNR and TCHH was decreased, while that of RPTN was increased in comparison to the 3D control skin. In the FLG knockdown (KD) 3D skin model, which was generated using FLG siRNA, the expression of HRNR was increased. The expression of the other proteins did not differ to a statistically significant extent. The expression of fused-S100 type protein family members may differ in AD skin. This suggests that these proteins play different roles in the pathogenesis of AD.
Collapse
Affiliation(s)
- Teruhiko Makino
- Department of Dermatology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Toyama, Japan
| | - Megumi Mizawa
- Department of Dermatology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Toyama, Japan
| | - Keita Takemoto
- Department of Dermatology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Toyama, Japan
| | - Seiji Yamamoto
- Department of Pathology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Toyama, Japan
| | - Tadamichi Shimizu
- Department of Dermatology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Toyama, Japan
| |
Collapse
|
38
|
Abstract
Peptidylarginine deiminases (PADs) transform a protein arginine residue into the non-standard amino acid citrulline. This calcium-dependent post-translational modification of proteins is called citrullination or deimination. As described in this special issue, PADs play a role in various physiological processes, and PAD deregulations are involved in many human diseases. Three PADs are expressed in the epidermis, where their roles begin to be deciphered. PAD1 and PAD3 are involved in keratinocyte differentiation, particularly in the epidermal barrier function, keratins, filaggrin and filaggrin-related proteins being the most abundant deiminated epidermal proteins. Reduced amounts of deiminated proteins and PAD1 expression may be involved in the pathogenesis of psoriasis and atopic dermatitis, two very frequent and chronic skin inflammatory diseases. The trichohyalin/PAD3/transglutaminase three pathway is important for hair shaft formation. Mutations of the PADI3 gene, leading to a decreased activity or abnormal localization of the corresponding isotype, are the cause of a rare hair disorder called uncombable hair syndrome, and are associated with the central centrifugal cicatricial alopecia, a frequent alopecia mainly affecting women of African ancestry. This article is part of the Theo Murphy meeting issue 'The virtues and vices of protein citrullination'.
Collapse
Affiliation(s)
- Marie-Claire Méchin
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, University Paul Sabatier, 31024 Toulouse, France
| | - Michel Simon
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), University of Toulouse, CNRS, INSERM, University Paul Sabatier, 31024 Toulouse, France
| |
Collapse
|
39
|
Flohr C, Rosala-Hallas A, Jones AP, Beattie P, Baron S, Browne F, Brown SJ, Gach JE, Greenblatt D, Hearn R, Hilger E, Esdaile B, Cork MJ, Howard E, Lovgren ML, August S, Ashoor F, Williamson PR, McPherson T, O'Kane D, Ravenscroft J, Shaw L, Sinha MD, Spowart C, Taams LS, Thomas BR, Wan M, Sach TH, Irvine AD. Efficacy and safety of ciclosporin versus methotrexate in the treatment of severe atopic dermatitis in children and young people (TREAT): a multicentre parallel group assessor-blinded clinical trial. Br J Dermatol 2023; 189:674-684. [PMID: 37722926 DOI: 10.1093/bjd/ljad281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 08/01/2023] [Accepted: 09/17/2023] [Indexed: 09/20/2023]
Abstract
BACKGROUND Conventional systemic drugs are used to treat children and young people (CYP) with severe atopic dermatitis (AD) worldwide, but no robust randomized controlled trial (RCT) evidence exists regarding their efficacy and safety in this population. While novel therapies have expanded therapeutic options, their high cost means traditional agents remain important, especially in lower-resource settings. OBJECTIVES To compare the safety and efficacy of ciclosporin (CyA) with methotrexate (MTX) in CYP with severe AD in the TREatment of severe Atopic Eczema Trial (TREAT) trial. METHODS We conducted a parallel group assessor-blinded RCT in 13 UK and Irish centres. Eligible participants aged 2-16 years and unresponsive to potent topical treatment were randomized to either oral CyA (4 mg kg-1 daily) or MTX (0.4 mg kg-1 weekly) for 36 weeks and followed-up for 24 weeks. Co-primary outcomes were change from baseline to 12 weeks in Objective Severity Scoring of Atopic Dermatitis (o-SCORAD) and time to first significant flare (relapse) after treatment cessation. Secondary outcomes included change in quality of life (QoL) from baseline to 60 weeks; number of participant-reported flares following treatment cessation; proportion of participants achieving ≥ 50% improvement in Eczema Area and Severity Index (EASI 50) and ≥ 75% improvement in EASI (EASI 75); and stratification of outcomes by filaggrin status. RESULTS In total, 103 participants were randomized (May 2016-February 2019): 52 to CyA and 51 to MTX. CyA showed greater improvement in disease severity by 12 weeks [mean difference in o-SCORAD -5.69, 97.5% confidence interval (CI) -10.81 to -0.57 (P = 0.01)]. More participants achieved ≥ 50% improvement in o-SCORAD (o-SCORAD 50) at 12 weeks in the CyA arm vs. the MTX arm [odds ratio (OR) 2.60, 95% CI 1.23-5.49; P = 0.01]. By 60 weeks MTX was superior (OR 0.33, 95% CI 0.13-0.85; P = 0.02), a trend also seen for ≥ 75% improvement in o-SCORAD (o-SCORAD 75), EASI 50 and EASI 75. Participant-reported flares post-treatment were higher in the CyA arm (OR 3.22, 95% CI 0.42-6.01; P = 0.02). QoL improved with both treatments and was sustained after treatment cessation. Filaggrin status did not affect outcomes. The frequency of adverse events (AEs) was comparable between both treatments. Five (10%) participants on CyA and seven (14%) on MTX experienced a serious AE. CONCLUSIONS Both CyA and MTX proved effective in CYP with severe AD over 36 weeks. Participants who received CyA showed a more rapid response to treatment, while MTX induced more sustained disease control after discontinuation.
Collapse
Affiliation(s)
- Carsten Flohr
- Department of Paediatric Dermatology, St John's Institute of Dermatology, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Anna Rosala-Hallas
- Liverpool Clinical Trials Centre, University of Liverpool, Liverpool, UK
| | - Ashley P Jones
- Liverpool Clinical Trials Centre, University of Liverpool, Liverpool, UK
| | | | - Susannah Baron
- Department of Paediatric Dermatology, St John's Institute of Dermatology, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Fiona Browne
- Paediatric Dermatology, Children's Health Ireland at Crumlin, Dublin, Ireland
| | - Sara J Brown
- Centre for Genomic and Experimental Medicine, University of Edinburgh, Edinburgh, UK
| | - Joanna E Gach
- University Hospitals Coventry and Warwickshire, Coventry, UK
| | - Danielle Greenblatt
- Department of Paediatric Dermatology, St John's Institute of Dermatology, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ross Hearn
- Ninewells Hospital and Medical School, Dundee, UK
| | - Eva Hilger
- Department of Paediatric Dermatology, St John's Institute of Dermatology, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Ben Esdaile
- Whittington Hospital, Whittington Health NHS Trust, London, UK
| | - Michael J Cork
- Sheffield Children's NHS Foundation Trust and Sheffield Dermatology Research, Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Emma Howard
- Department of Paediatric Dermatology, St John's Institute of Dermatology, King's College London and Guy's and St Thomas' NHS Foundation Trust, London, UK
| | - Marie-Louise Lovgren
- Birmingham Children's Hospital, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | | | - Farhiya Ashoor
- Liverpool Clinical Trials Centre, University of Liverpool, Liverpool, UK
| | - Paula R Williamson
- Liverpool Clinical Trials Centre, University of Liverpool, Liverpool, UK
| | - Tess McPherson
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Donal O'Kane
- Department of Dermatology, Belfast Health and Social Care Trust, Belfast, UK
| | | | - Lindsay Shaw
- Bristol Royal Hospital for Children, Bristol, UK
| | - Manish D Sinha
- Kings College London, Department of Paediatric Nephrology, Evelina London Children's Hospital, Guy's & St Thomas's Foundation Hospitals NHS Trust, London
| | - Catherine Spowart
- Liverpool Clinical Trials Centre, University of Liverpool, Liverpool, UK
| | - Leonie S Taams
- Centre for Inflammation Biology and Cancer Immunology, King's College London, UK
| | - Bjorn R Thomas
- Royal Free Hospital and Blizard Institute, Queen Mary University London, UK
| | - Mandy Wan
- Evelina London Children's Hospital, Guys' and St Thomas' NHS Foundation Trust, London, UK
- Institute of Pharmaceutical Science, King's College London, London, UK
| | - Tracey H Sach
- Health Economics Group, Norwich Medical School, University of East Anglia, Norwich, UK
| | - Alan D Irvine
- Paediatric Dermatology, Children's Health Ireland at Crumlin, Dublin, Ireland
- Clinical Medicine, Trinity College Dublin, Ireland
- National Children's Research Centre, Crumlin, Dublin, Ireland
| |
Collapse
|
40
|
Srinivas SM, Dhar S, Gowdra A, Saha A, Sundararajan L, Geetha TS, Banerjee R, Malakar R, Sil A, Lakshminarayana Shyam Prasad A. Filaggrin gene polymorphisms in Indian children with atopic dermatitis: A cross-sectional multicentre study. Indian J Dermatol Venereol Leprol 2023; 89:819-827. [PMID: 37067103 DOI: 10.25259/ijdvl_37_2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 10/15/2022] [Indexed: 04/18/2023]
Abstract
Background Filaggrin (FLG) gene encoding the protein filaggrin plays an important role in barrier function of the skin and its alteration is a predisposing factor for atopic dermatitis. FLG gene variants result in absent or decreased filaggrin protein. Worldwide, the prevalence of FLG variants ranges from 14 to 56%. FLG null variants are distinct in each population. Objectives To study the FLG gene polymorphisms in Indian children and attempt a genotype-phenotype correlation in atopic dermatitis. Methods This was a cross-sectional, multicentre study conducted on 75 Indian children. Demographic details, clinical features and identified FLG null variants were recorded. We performed a whole gene sequencing of the entire FLG coding region using next-generation sequencing technology. Results The prevalence of FLG null variants was 34.7%. A total of 20 different FLG loss of function variants in 26 children were documented. Sixteen (80%) variants were novel and four (20%) were previously reported in Asian and European populations. We found a statistically significant association between FLG variants with early age of onset of atopic dermatitis (P = 0.016) and elevated serum IgE levels (P = 0.051). There was no significant difference between atopic dermatitis phenotypes in children having one variant as compared to children harbouring two or more null variants. Limitation Small sample size. Conclusion Our study reports a unique set of FLG variants different from Asian and European populations, with these variants being significantly associated with an early age of onset of atopic dermatitis and elevated serum IgE levels.
Collapse
Affiliation(s)
- Sahana M Srinivas
- Department of Pediatric Dermatology, Indira Gandhi Institute of Child Health, Bengaluru, Karnataka, India
| | - Sandipan Dhar
- Department of Pediatric Dermatology, Institute of Child Health, Kolkata, West Bengal, India
| | - Aruna Gowdra
- Department of Microbiology, Indira Gandhi Institute of Child Health, Bengaluru, Karnataka, India
| | - Abhijit Saha
- Department of Pediatric Dermatology, Institute of Child Health, Kolkata, West Bengal, India
| | | | | | - Raghubir Banerjee
- Department of Pediatric Dermatology, Institute of Child Health, Kolkata, West Bengal, India
| | - Rajib Malakar
- Department of Pediatric Dermatology, Institute of Child Health, Kolkata, West Bengal, India
| | - Amrita Sil
- Department of Pharmacology, Rampurhat Government Medical College and Hospital, Birbhum, West Bengal, India
| | | |
Collapse
|
41
|
Bhatia R, Gupta V. Exploring filaggrin gene polymorphisms in Indian children with atopic dermatitis: Hitherto an unchartered territory. Indian J Dermatol Venereol Leprol 2023; 89:795-796. [PMID: 37933961 DOI: 10.25259/ijdvl_1055_2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 10/07/2023] [Indexed: 11/08/2023]
Affiliation(s)
- Riti Bhatia
- Department of Dermatology, AIIMS, New Delhi, India
| | - Vishal Gupta
- Department of Dermatology, AIIMS, New Delhi, India
| |
Collapse
|
42
|
Correa-Araujo L, Prieto-Abello L, Lara-Bertrand A, Medina-Solano M, Guerrero L, Camacho B, Silva-Cote I. Bioengineered skin constructs based on mesenchymal stromal cells and acellular dermal matrix exposed to inflammatory microenvironment releasing growth factors involved in skin repair. Stem Cell Res Ther 2023; 14:306. [PMID: 37880776 PMCID: PMC10601120 DOI: 10.1186/s13287-023-03535-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/11/2023] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Skin tissue engineering is a rapidly evolving field of research that effectively combines stem cells and biological scaffolds to replace damaged tissues. Human Wharton's jelly mesenchymal stromal cells (hWJ-MSCs) are essential to generate tissue constructs, due to their potent immunomodulatory effects and release of paracrine factors for tissue repair. Here, we investigated whether hWJ-MSC grown on human acellular dermal matrix (hADM) scaffolds and exposed to a proinflammatory environment maintain their ability to produce in vitro growth factors involved in skin injury repair and promote in vivo wound healing. METHODS We developed a novel method involving physicochemical and enzymatic treatment of cadaveric human skin to obtain hADM scaffold. Subsequently, skin bioengineered constructs were generated by seeding hWJ-MSCs on the hADM scaffold (construct 1) and coating it with human platelet lysate clot (hPL) (construct 2). Either construct 1 or 2 were then incubated with proinflammatory cytokines (IL-1α, IL-1β, IL-6, TNF-α) for 12, 24, 48, 72 and 96 h. Supernatants from treated and untreated constructs and hWJ-MSCs on tissue culture plate (TCP) were collected, and concentration of the following growth factors, bFGF, EGF, HGF, PDGF, VEGF and Angiopoietin-I, was determined by immunoassay. We also asked whether hWJ-MSCs in the construct 1 have potential toward epithelial differentiation after being cultured in an epithelial induction stimulus using an air-liquid system. Immunostaining was used to analyze the synthesis of epithelial markers such as filaggrin, involucrin, plakoglobin and the mesenchymal marker vimentin. Finally, we evaluated the in vivo potential of hADM and construct 1 in a porcine full-thickness excisional wound model. RESULTS We obtained and characterized the hADM and confirmed the viability of hWJ-MSCs on the scaffold. In both constructs without proinflammatory treatment, we reported high bFGF production. In contrast, the levels of other growth factors were similar to the control (hWJ-MSC/TCP) with or without proinflammatory treatment. Except for PDGF in the stimulated group. These results indicated that the hADM scaffold maintained or enhanced the production of these bioactive molecules by hWJ-MSCs. On the other hand, increased expression of filaggrin, involucrin, and plakoglobin and decreased expression of vimentin were observed in constructs cultured in an air-liquid system. In vivo experiments demonstrated the potential of both hADM and hADM/hWJ-MSCs constructs to repair skin wounds with the formation of stratified epithelium, basement membrane and dermal papillae, improving the appearance of the repaired tissue. CONCLUSIONS hADM is viable to fabricate a tissue construct with hWJ-MSCs able to promote the in vitro synthesis of growth factors and differentiation of these cells toward epithelial lineage, as well as, promote in a full-thickness skin injury the new tissue formation. These results indicate that hADM 3D architecture and its natural composition improved or maintained the cell function supporting the potential therapeutic use of this matrix or the construct for wound repair and providing an effective tissue engineering strategy for skin repair.
Collapse
Affiliation(s)
- Luz Correa-Araujo
- Tissue Engineering Unit, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Carrera 32 # 12-81, Secretaria Distrital de Salud, Bogotá, Colombia
| | - Leonardo Prieto-Abello
- Tissue Engineering Unit, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Carrera 32 # 12-81, Secretaria Distrital de Salud, Bogotá, Colombia
| | - Adriana Lara-Bertrand
- Tissue Engineering Unit, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Carrera 32 # 12-81, Secretaria Distrital de Salud, Bogotá, Colombia
| | - Martha Medina-Solano
- Tissue Engineering Unit, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Carrera 32 # 12-81, Secretaria Distrital de Salud, Bogotá, Colombia
| | - Linda Guerrero
- Tissue Bank, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Bogotá, Colombia
| | - Bernardo Camacho
- Tissue Engineering Unit, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Carrera 32 # 12-81, Secretaria Distrital de Salud, Bogotá, Colombia
- Tissue Bank, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Bogotá, Colombia
| | - Ingrid Silva-Cote
- Tissue Engineering Unit, Instituto Distrital de Ciencia Biotecnología e Innovación en Salud - IDCBIS, Carrera 32 # 12-81, Secretaria Distrital de Salud, Bogotá, Colombia.
| |
Collapse
|
43
|
Alakloby OM, Almuqarrab F, Zschocke J, Schmuth M, Abdulkareem A, Alnutaifi K, Borgio F, Gruber R, Hennies HC. Filaggrin gene variants among Saudi patients with ichthyosis vulgaris. BMC Med Genomics 2023; 16:256. [PMID: 37872553 PMCID: PMC10591457 DOI: 10.1186/s12920-023-01700-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/13/2023] [Indexed: 10/25/2023] Open
Abstract
Ichthyoses are a heterogeneous group of cornification disorders. The most common form of ichthyoses is ichthyosis vulgaris (IV) ([OMIM] #146,700), which can be inherited as autosomal semi-dominant mutation in the filaggrin gene (FLG). We present the findings of a study involving 35 Saudi patients with a clinical diagnosis of ichthyosis vulgaris. For identifying the pathogenic mutation of their disease, we used Sanger sequencing analysis of the extracted DNA samples. We also identified the underlying 22 FLG variants, which have been seen before. However, the detected mutations do not involve the common p.R501* c. 2282del4 mutations reported in European populations. Indeed, we did not identify any statistical influence of the homozygous or heterozygous genotypes on the phenotype severity of the disease.
Collapse
Affiliation(s)
- Omar Mohammed Alakloby
- Department of Dermatology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Fatimah Almuqarrab
- Department of Dermatology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
- Dermatology Department, King Saud University Medical City, Riyadh, Saudi Arabia.
| | - Johannes Zschocke
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Mathias Schmuth
- Department of Dermatology, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Kholood Alnutaifi
- Department of Dermatology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Francis Borgio
- Department of Genetic Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Robert Gruber
- Department of Dermatology, Medical University of Innsbruck, Innsbruck, Austria
| | - Hans Christian Hennies
- Institute of Human Genetics, Medical University of Innsbruck, Innsbruck, Austria
- Department of Biological and Geographical Sciences, University of Huddersfield, Huddersfield, UK
- Cologne Center for Genomics, University Hospital Cologne, Cologne, Germany
| |
Collapse
|
44
|
Kalafatis D, Joshua V, Hansson M, Mathsson-Alm L, Hensvold A, Sköld M. Presence of anti-modified protein antibodies in idiopathic pulmonary fibrosis. Respirology 2023; 28:925-933. [PMID: 37376768 DOI: 10.1111/resp.14543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 06/19/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND AND OBJECTIVE Studies of autoimmunity and anti-citrullinated protein antibodies (ACPA) in idiopathic pulmonary fibrosis (IPF) have been confined to investigations of anti-cyclic citrullinated peptide (anti-CCP) antibodies which utilize synthetic peptides as surrogate markers for in vivo citrullinated antigens. We studied immune activation by analysing the prevalence of in vivo anti-modified protein antibodies (AMPA) in IPF. METHODS We included patients with incident and prevalent IPF (N = 120), sex and smoking-matched healthy controls (HC) (N = 120) and patients with RA (N = 104). Serum (median time: 11 months [Q1-Q3: 1-28 months] from diagnosis) was analysed for presence of antibodies towards native and posttranslational modified (citrullinated [Cit, N = 25]; acetylated [Acet, N = 4] and homocitrullinated [Carb, N = 1]) peptides derived from tenascin (TNC, N = 9), fibrinogen (Fib, N = 11), filaggrin (Fil, N = 5), histone (N = 8), cathelicidin (LL37, N = 4) and vimentin (N = 5) using a custom-made peptide microarray. RESULTS AMPA were more frequent and in increased levels in IPF than in HC (44% vs. 27%, p < 0.01), but less than in RA (44% vs. 79%, p < 0.01). We specifically observed AMPA in IPF towards certain citrullinated, acetylated and carbamylated peptides versus HC: tenascin (Cit(2033) -TNC2025-2040 ; Cit(2197) -TNC2177-2200 ; Cit(2198) -TNC2177-2200 ), fibrinogen (Cit(38,42) -Fibα36-50 ; Cit(72) -Fibβ60-74 ) and filaggrin (Acet-Fil307-324 , Carb-Fil307-324 ). No differences in survival (p = 0.13) or disease progression (p = 0.19) between individuals with or without AMPA was observed in IPF. However, patients with incident IPF had better survival if AMPA were present (p = 0.009). CONCLUSION A significant proportion of IPF patients present with specific AMPA in serum. Our results suggest autoimmunity as a possible characteristic for a subgroup of IPF that may affect disease outcome.
Collapse
Affiliation(s)
- Dimitrios Kalafatis
- Respiratory Medicine Unit, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Vijay Joshua
- Division of Rheumatology, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Monika Hansson
- Division of Rheumatology, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | | | - Aase Hensvold
- Division of Rheumatology, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Rheumatology, Academic Specialist Center, Stockholm Health Region, Stockholm, Sweden
| | - Magnus Sköld
- Respiratory Medicine Unit, Department of Medicine Solna and Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital, Stockholm, Sweden
| |
Collapse
|
45
|
Inan S, Ward SJ, Baltazar CT, Peruggia GA, Javed E, Nayak AP. Epicutaneous Sensitization to the Phytocannabinoid β-Caryophyllene Induces Pruritic Inflammation. Int J Mol Sci 2023; 24:14328. [PMID: 37762646 PMCID: PMC10532273 DOI: 10.3390/ijms241814328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023] Open
Abstract
In recent years, there has been increased accessibility to cannabis for recreational and medicinal use. Incidentally, there has been an increase in reports describing allergic reactions to cannabis including exacerbation of underlying asthma. Recently, multiple protein allergens were discovered in cannabis, yet these fail to explain allergic sensitization in many patients, particularly urticaria and angioedema. Cannabis has a rich chemical profile including cannabinoids and terpenes that possess immunomodulatory potential. We examined whether major cannabinoids of cannabis such as cannabidiol (CBD) and the bicyclic sesquiterpene beta-caryophyllene (β-CP) act as contact sensitizers. The repeated topical application of mice skin with β-CP at 10 mg/mL (50 µL) induced an itch response and dermatitis at 2 weeks in mice, which were sustained for the period of study. Histopathological analysis of skin tissues revealed significant edema and desquamation for β-CP at 10 mg/mL. For CBD and β-CP, we observed a dose-dependent increase in epidermal thickening with profound thickening observed for β-CP at 10 mg/mL. Significant trafficking of CD11b cells was observed in various compartments of the skin in response to treatment with β-CP in a concentration-dependent manner. Mast cell trafficking was restricted to β-CP (10 mg/mL). Mouse proteome profiler cytokine/chemokine array revealed upregulation of complement C5/5a (anaphylatoxin), soluble intracellular adhesion molecule-1 (sICAM-1) and IL-1 receptor antagonist (IL-1RA) in animals dosed with β-CP (10 mg/mL). Moreover, we observed a dose-dependent increase in serum IgE in animals dosed with β-CP. Treatment with β-CP (10 mg/mL) significantly reduced filaggrin expression, an indicator of barrier disruption. In contrast, treatment with CBD at all concentrations failed to evoke scratching and dermatitis in mice and did not result in increased serum IgE. Further, skin tissues were devoid of any remarkable features, although at 10 mg/mL CBD we did observe the accumulation of dermal CD11b cells in skin tissue sections. We also observed increased filaggrin staining in mice repeatedly dosed with CBD (10 mg/mL). Collectively, our studies indicate that repeated exposure to high concentrations of β-CP can induce dermatitis-like pathological outcomes in mice.
Collapse
Affiliation(s)
- Saadet Inan
- Department of Neural Sciences, Center for Substance Abuse, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA; (S.I.); (S.J.W.); (C.T.B.)
| | - Sara J. Ward
- Department of Neural Sciences, Center for Substance Abuse, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA; (S.I.); (S.J.W.); (C.T.B.)
| | - Citlalli T. Baltazar
- Department of Neural Sciences, Center for Substance Abuse, Lewis Katz School of Medicine at Temple University, Philadelphia, PA 19140, USA; (S.I.); (S.J.W.); (C.T.B.)
| | - Gabrielle A. Peruggia
- Department of Medicine, Center for Translational Medicine & Division of Pulmonary, Allergy and Critical Care Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA 19107, USA (E.J.)
| | - Elham Javed
- Department of Medicine, Center for Translational Medicine & Division of Pulmonary, Allergy and Critical Care Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA 19107, USA (E.J.)
| | - Ajay P. Nayak
- Department of Medicine, Center for Translational Medicine & Division of Pulmonary, Allergy and Critical Care Medicine, Jane and Leonard Korman Lung Center, Thomas Jefferson University, Philadelphia, PA 19107, USA (E.J.)
| |
Collapse
|
46
|
Michaelidou M, Redhu D, Kumari V, Babina M, Worm M. IL-1α/β and IL-18 profiles and their impact on claudin-1, loricrin and filaggrin expression in patients with atopic dermatitis. J Eur Acad Dermatol Venereol 2023; 37:e1141-e1143. [PMID: 37114373 DOI: 10.1111/jdv.19153] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 04/18/2023] [Indexed: 04/29/2023]
Affiliation(s)
- M Michaelidou
- Division of Allergy and Immunology, Department of Dermatology and Allergy, Charité Universitätmedizin Berlin, Berlin, Germany
| | - D Redhu
- Division of Allergy and Immunology, Department of Dermatology and Allergy, Charité Universitätmedizin Berlin, Berlin, Germany
| | - V Kumari
- Division of Allergy and Immunology, Department of Dermatology and Allergy, Charité Universitätmedizin Berlin, Berlin, Germany
| | - M Babina
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, Berlin, Germany
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Institute of Allergology, Berlin, Germany
| | - M Worm
- Division of Allergy and Immunology, Department of Dermatology and Allergy, Charité Universitätmedizin Berlin, Berlin, Germany
| |
Collapse
|
47
|
Sakuraba K, Kojima Y, Terahara T, Kuma H, Tokudome Y. Non-invasive Microneedle Application Increases Ceramide and Natural Moisturizing Factors in a Reconstructed Human Skin Model. Biol Pharm Bull 2023; 46:1310-1315. [PMID: 37518093 DOI: 10.1248/bpb.b23-00294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Recently, microneedling as a cosmetic product has attracted attention as one way to improve skin barrier function and moisturizing function to reduce wrinkle formation. However, some cases of erythema and edema have been reported as side effects. In order to develop safer microneedle cosmetics, we investigated whether microneedles can improve skin barrier function and moisturizing function even when applied in a non-invasive manner that does not penetrate the stratum corneum. We established the condition of non-penetrating microneedle application on reconstructed human full-thickness skin models and examined the effect on the skin models when microneedles were applied under this condition. Microneedle application increased the gene expression of serine palmitoyltransferase long chain base subunit (SPTLC) 3, filaggrin, and transglutaminase 1. The amount of ceramide produced by SPTLC was also increased by microneedle application. Gene expression of filaggrin-degrading enzymes and the amount of free amino acids, a product of filaggrin degradation, were also increased by microneedling. These results suggest that non-invasive microneedle application can improve skin barrier function and moisturizing function by increasing the amount of ceramide and natural moisturizing factors.
Collapse
Affiliation(s)
- Kota Sakuraba
- Basic Research Laboratories, R&D Division, Hisamitsu Pharmaceutical Co., Inc
| | - Yukio Kojima
- Basic Research Laboratories, R&D Division, Hisamitsu Pharmaceutical Co., Inc
| | | | - Hidekazu Kuma
- Basic Research Laboratories, R&D Division, Hisamitsu Pharmaceutical Co., Inc
| | - Yoshihiro Tokudome
- Laboratory of Cosmetic Sciences, Regional Innovation Center, Saga University
- Laboratory of Cosmetic Sciences, Graduate School of Advanced Health Sciences, Saga University
| |
Collapse
|
48
|
Nasanbat B, Uchiyama A, Amalia SN, Inoue Y, Yokoyama Y, Ogino S, Torii R, Hosoi M, Motegi SI. Kaempferol therapy improved MC903 induced-atopic dermatitis in a mouse by suppressing TSLP, oxidative stress, and type 2 inflammation. J Dermatol Sci 2023; 111:93-100. [PMID: 37393173 DOI: 10.1016/j.jdermsci.2023.06.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 06/09/2023] [Accepted: 06/26/2023] [Indexed: 07/03/2023]
Abstract
BACKGROUND Atopic dermatitis is a common skin disease caused by genetic susceptibility, environmental factors, immune response, and skin barrier dysfunction. Kaempferol is a natural flavonoid widely found in tea, vegetables, and fruits and has been reported to have excellent anti-inflammation activity. However, the therapeutic effect of kaempferol on atopic dermatitis is unclear. OBJECTIVE This study aimed to elucidate the effect of kaempferol on skin inflammation in atopic dermatitis. METHODS The suppressive effect of kaempferol administration on skin inflammation was examined using MC903-induced atopic dermatitis-like skin inflammation mouse model. Quantification of skin dermatitis and transepidermal water loss was performed. A histopathological study was performed to examine thymic stromal lymphopoietin expression, cornified envelope proteins such as filaggrin, loricrin, and involucrin, and the numbers of infiltrating inflammatory cells, including lymphocytes, macrophages, and mast cells in the dermatitis area. The expressions of IL-4 and IL-13 were investigated by qPCR and flow cytometry analysis using skin tissues. The expression of HO-1 was investigated by western blot and qPCR. RESULTS Kaempferol therapy significantly suppressed MC903-induced dermatitis, TEWL, TSLP, and HO-1 expression, and infiltration of inflammatory cells. Kaempferol therapy improved the decreased expressions of filaggrin, loricrin, and involucrin in MC903-induced dermatitis skin site. The expressions of IL-4, and IL-13 were partially decreased in kaempferol-treated mice. CONCLUSION Kaempferol might improve MC903-induced dermatitis via suppression of type 2 inflammation and improvement of barrier dysfunction by inhibition of TSLP expression and oxidative stress. Kaempferol might have the potential to be a new treatment for atopic dermatitis.
Collapse
Affiliation(s)
- Bolor Nasanbat
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akihiko Uchiyama
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan.
| | - Syahla Nisaa Amalia
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yuta Inoue
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yoko Yokoyama
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sachiko Ogino
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Ryoko Torii
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Mari Hosoi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sei-Ichiro Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| |
Collapse
|
49
|
Yang MH, Hwang ST, Um JY, Ahn KS. Cycloastragenol exerts protective effects against UVB irradiation in human dermal fibroblasts and HaCaT keratinocytes. J Dermatol Sci 2023; 111:60-67. [PMID: 37474410 DOI: 10.1016/j.jdermsci.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 04/24/2023] [Accepted: 07/02/2023] [Indexed: 07/22/2023]
Abstract
BACKGROUND Cycloastragenol (CAG) is a triterpene aglycone of astragaloside IV that possesses various pharmacological actions including improving telomerase activity, inhibiting inflammation and cell proliferation, inducing apoptosis. OBJECTIVE CAG has also shown effect to significantly improve the appearance of aging skin but, its molecular mechanism of protective effect against UVB induced-damage have not been elucidated. We investigated the potential effect of CAG on UVB wrinkle promoting activities and skin-moisturizing effects in human dermal fibroblasts (HDF) and HaCaT keratinocytes. METHODS After UVB irradiation or H2O2 treatment, the levels of matrix metalloproteinases (MMPs) and ROS generation were measured in CAG-treated HDF cells. In addition, after UVB irradiation, hyaluronic acid and skin hydration factors (filaggrin and SPT) were also analyzed in CAG (0-0.5-1-2 µM)-treated HDF and HaCaT cells. RESULTS We found that CAG caused a significant decrease in the levels of UVB-induced MMP-1, MMP-9, MMP-13 and ROS generation, also increased UVB-damaged Collagen Ⅰ. We also noted that CAG increased cell viability and can regulate MMP-1, MMP-9, MMP-13and Collagen Ⅰ in H2O2-damaged HDF cells. Moreover, we noticed that CAG effectively enhanced levels of hyaluronic acid and expression of skin hydration factors (filaggrin and serine palmitoyltransferase (SPT)) in UVB-damaged HDF and HaCaT cells. CONCLUSION This is first report indicating that CAG can exhibit protective effect against UVB and H2O2-induced damages and can contribute in maintenance of healthy skin.
Collapse
Affiliation(s)
- Min Hee Yang
- KHU-KIST Department of Converging Science and Technology and Department of Science in Korean Medicine, Kyung Hee University, Seoul, Korea; Department of Science in Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Sun Tae Hwang
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Jae-Young Um
- Department of Science in Korean Medicine, Kyung Hee University, Seoul, Korea
| | - Kwang Seok Ahn
- KHU-KIST Department of Converging Science and Technology and Department of Science in Korean Medicine, Kyung Hee University, Seoul, Korea; Department of Science in Korean Medicine, Kyung Hee University, Seoul, Korea.
| |
Collapse
|
50
|
Liu C, Han C, Liang J, Yang C, Wang Y, Chen P, Chen H, Lu H, Cai Y, Wang Q, Zhang X, Zeng K, Li C. Variants in the Gene Encoding Filaggrin Cause Autosomal-Dominant Symmetrical Acral Keratoderma. J Invest Dermatol 2023; 143:1313-1317.e8. [PMID: 36716921 DOI: 10.1016/j.jid.2023.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 01/03/2023] [Accepted: 01/10/2023] [Indexed: 01/29/2023]
Affiliation(s)
- Chenmei Liu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Chunlei Han
- Department of Dermatology, the Sixth People's Hospital of Dongguan, Dongguan, China
| | - Jingyao Liang
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, China
| | - Chao Yang
- Department of Dermatology, Dermatology Hospital, Southern Medical University, Guangzhou, China
| | - Youyi Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Pingjiao Chen
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongyu Chen
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Hongyan Lu
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yan Cai
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qi Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xibao Zhang
- Department of Dermatology, Guangzhou Institute of Dermatology, Guangzhou, China
| | - Kang Zeng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Changxing Li
- Department of Dermatology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
| |
Collapse
|