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Abbas MA, Masry MAA, ALQusi SM, Hadhoud MM, Fouda EAM. The association between endoplasmic reticulum aminopeptidase 2 gene single nucleotide polymorphisms and the risk of psoriasis and psoriatic arthritis in Egyptians. Mol Biol Rep 2024; 51:847. [PMID: 39046539 DOI: 10.1007/s11033-024-09733-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Accepted: 06/17/2024] [Indexed: 07/25/2024]
Abstract
BACKGROUND Psoriasis (Ps) is a disorder attributed to the immune system that involves inflammation of the skin and joints. Psoriasis is a multifactorial disorder in which genetic factors represent about 70% of the disease risk. This study aims to establish the correlation between the ERAP2 gene's single nucleotide polymorphisms (SNPs) rs2910686 and rs2248374 with the susceptibility to Ps and/or psoriatic arthritis (PsA) among the Egyptian population. METHODS AND RESULTS Genotyping of ERAP2 gene SNPs (rs2910686 and rs2248374) in 120 psoriatic patients with and without arthritis and 100 controls was done using real-time PCR. The genotype frequency and distribution of the ERAP2 SNP (rs2910686 and rs2248374) were in Hardy-Weinberg equilibrium (HWE). For rs2910686, the TC and CC genotypes and C allele frequency were significant risk factors for PsA compared to the controls (OR = 5.708, OR = 10.165, and OR = 4.282, respectively). They also were significant risk factors for Ps compared to the controls (OR = 5.165, OR = 5.040, and OR = 3.258, respectively). For rs2248374, the AG genotype significantly increased the risk of PsA (OR = 2.605) and Ps (OR = 3.768) compared to controls. The AG genotype was significantly related to the risk of Ps (OR = 3.369) G allele with PsA (OR = 1.608) and Ps (OR = 1.965) compared to controls. CONCLUSION In Egyptian individuals, the ERAP2 gene polymorphisms (rs2248374 and rs2910686) may contribute genetically to the pathophysiology of psoriasis and PsA.
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Affiliation(s)
- Mona A Abbas
- Department of Medical Biochemistry and Molecular Biology, Faculty of Medicine, Menoufia University, Yassen Abd Al Ghafar Street, Shebin El-Kom City, Menoufia governorate, 32511, Egypt.
| | | | - Salah M ALQusi
- Department of Organic Chemistry, Faculty of Science, Menoufia University, Menoufia, Egypt
| | - Mahmoud M Hadhoud
- Department of Orthopedic Surgery, Faculty of Medicine, Menoufia University, Menoufia, Egypt
| | - Eman A M Fouda
- Department of Biochemistry, Faculty of Science, Menoufia University, Menoufia, Egypt
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2
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Niu X, Shen Y, Wen Y, Mi X, Xie J, Zhang Y, Ding Z. KTN1 mediated unfolded protein response protects keratinocytes from ionizing radiation-induced DNA damage. J Dermatol Sci 2024; 114:24-33. [PMID: 38448340 DOI: 10.1016/j.jdermsci.2024.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 02/11/2024] [Accepted: 02/22/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND The unfolded protein response (UPR) is one of the cytoprotective mechanisms against various stresses and essential for the normal function of skin. Skin injury caused by ionizing radiation (IR) is a common side effect of radiotherapy and it is unclear how UPR affects IR-induced skin injury. OBJECTIVES To verify the effect of UPR on IR-induced DNA damage in keratinocytes and the relation between an endoplasmic reticulum (ER) protein KTN1 and UPR. METHODS All experiments were performed on keratinocytes models: HaCaT and HEK-A. ER lumen and the expression levels of KTN1 and UPR pathway proteins (PERK, IRE1α and ATF6) were examined by transmission electron microscopy and immunoblotting, respectively. 4-PBA, an UPR inhibitor, was used to detected its effects on DNA damage and cell proliferation. Subsequently, the effects of KTN1 deletion on UPR, DNA damage and cell proliferation after IR were detected. Tunicamycin was used to reactivate UPR and then we examined its effects on DNA damage. RESULTS UPR was activated by IR in keratinocytes. Inhibition of UPR aggravated DNA damage and suppressed cell proliferation after IR. KTN1 expression was upregulated by IR and KTN1 depletion reduced ER expansion and the expression of UPR-related proteins. Moreover, KTN1 depletion aggravated DNA damage and suppressed cell proliferation after IR could reversed by reactivation of UPR. CONCLUSION KTN1 deletion aggravates IR-induced keratinocyte DNA damage via inhibiting UPR. Our findings provide new insights into the mechanisms of keratinocytes in response to IR-induced damage.
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Affiliation(s)
- Xinli Niu
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yi Shen
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China
| | - Yunhan Wen
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China
| | - Xing Mi
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China
| | - Jing Xie
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China
| | - Ying Zhang
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China
| | - Zhenhua Ding
- Department of Radiation Medicine, Guangdong Provincial Key Laboratory of Tropical Disease Research, NMPA Key Laboratory for Safety Evaluation of Cosmetics, School of Public Health, Southern Medical University, Guangzhou, China.
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Ettinger M, Burner T, Sharma A, Chang YT, Lackner A, Prompsy P, Deli IM, Traxler J, Wahl G, Altrichter S, Langer R, Tsai YC, Varkhande SR, Schoeftner LC, Iselin C, Gratz IK, Kimeswenger S, Guenova E, Hoetzenecker W. Th17-associated cytokines IL-17 and IL-23 in inflamed skin of Darier disease patients as potential therapeutic targets. Nat Commun 2023; 14:7470. [PMID: 37978298 PMCID: PMC10656568 DOI: 10.1038/s41467-023-43210-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023] Open
Abstract
Darier disease (DD) is a rare, inherited multi-organ disorder associated with mutations in the ATP2A2 gene. DD patients often have skin involvement characterized by malodorous, inflamed skin and recurrent, severe infections. Therapeutic options are limited and inadequate for the long-term management of this chronic disease. The aim of this study was to characterize the cutaneous immune infiltrate in DD skin lesions in detail and to identify new therapeutic targets. Using gene and protein expression profiling assays including scRNA sequencing, we demonstrate enhanced expression of Th17-related genes and cytokines and increased numbers of Th17 cells in six DD patients. We provide evidence that targeting the IL-17/IL-23 axis in a case series of three DD patients with monoclonal antibodies is efficacious with significant clinical improvement. As DD is a chronic, relapsing disease, our findings might pave the way toward additional options for the long-term management of skin inflammation in patients with DD.
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Affiliation(s)
- Monika Ettinger
- Department of Dermatology and Venereology, Kepler University Hospital Linz, Linz, Austria
- Department of Dermatology and Venereology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Teresa Burner
- Department of Dermatology and Venereology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Anshu Sharma
- Department of Biosciences and Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Yun-Tsan Chang
- Department of Dermatology, University of Lausanne and Faculty of Biology and Medicine, Lausanne, Switzerland
| | - Angelika Lackner
- Department of Dermatology and Venereology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Pacôme Prompsy
- Department of Dermatology, University of Lausanne and Faculty of Biology and Medicine, Lausanne, Switzerland
| | - Isabella M Deli
- Department of Dermatology and Venereology, Kepler University Hospital Linz, Linz, Austria
| | - Judith Traxler
- Department of Dermatology and Venereology, Kepler University Hospital Linz, Linz, Austria
| | - Gerald Wahl
- Department of Dermatology and Venereology, Kepler University Hospital Linz, Linz, Austria
| | - Sabine Altrichter
- Department of Dermatology and Venereology, Kepler University Hospital Linz, Linz, Austria
- Department of Dermatology and Venereology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Rupert Langer
- Institute of Pathology and Molecular Pathology, Kepler University Hospital Linz, Linz, Austria
- Institute of Pathology and Molecular Pathology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Yi-Chien Tsai
- Department of Dermatology, University of Lausanne and Faculty of Biology and Medicine, Lausanne, Switzerland
| | - Suraj R Varkhande
- Department of Biosciences and Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Leonie C Schoeftner
- Department of Biosciences and Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Christoph Iselin
- Department of Dermatology, University of Lausanne and Faculty of Biology and Medicine, Lausanne, Switzerland
| | - Iris K Gratz
- Department of Biosciences and Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Susanne Kimeswenger
- Department of Dermatology and Venereology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria
| | - Emmanuella Guenova
- Department of Dermatology, University of Lausanne and Faculty of Biology and Medicine, Lausanne, Switzerland
- Department of Dermatology, Hospital 12 de octubre, Medical school, University Complutense, Madrid, Spain
| | - Wolfram Hoetzenecker
- Department of Dermatology and Venereology, Kepler University Hospital Linz, Linz, Austria.
- Department of Dermatology and Venereology, Medical Faculty, Johannes Kepler University Linz, Linz, Austria.
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Lee YB, Hwang HJ, Kim E, Lim SH, Chung CH, Choi EH. Hyperglycemia-activated 11β-hydroxysteroid dehydrogenase type 1 increases endoplasmic reticulum stress and skin barrier dysfunction. Sci Rep 2023; 13:9206. [PMID: 37280272 PMCID: PMC10244460 DOI: 10.1038/s41598-023-36294-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 05/31/2023] [Indexed: 06/08/2023] Open
Abstract
The diabetes mellitus (DM) skin shows skin barrier dysfunction and skin lipid abnormality, similar to conditions induced by systemic or local glucocorticoid excess and aged skin. Inactive glucocorticoid (GC) is converted into active glucocorticoid by 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1). Hyperglycemia in DM and excessive GC are known to increase endoplasmic reticulum (ER) stress. We hypothesized that hyperglycemia affects systemic GC homeostasis and that the action of skin 11β-HSD1 and GC contributes to increased ER stress and barrier defects in DM. We compared 11β-HSD1, active GC, and ER stress between hyperglycemic and normoglycemic conditions in normal human keratinocytes and db/db mice. 11β-HSD1 and cortisol increased with time in keratinocyte culture under hyperglycemic conditions. 11β-HSD1 siRNA-transfected cells did not induce cortisol elevation in hyperglycemic condition. The production of 11β-HSD1 and cortisol was suppressed in cell culture treated with an ER stress-inhibitor. The 14-week-old db/db mice showed higher stratum corneum (SC) corticosterone, and skin 11β-HSD1 levels than 8-week-old db/db mice. Topical 11β-HSD1 inhibitor application in db/db mice decreased SC corticosterone levels and improved skin barrier function. Hyperglycemia in DM may affect systemic GC homeostasis, activate skin 11β-HSD1, and induce local GC excess, which increases ER stress and adversely affects skin barrier function.
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Affiliation(s)
- Young Bin Lee
- Department of Dermatology, Yonsei University Wonju College of Medicine, 20 Ilsan-ro, Wonju, 26426, Republic of Korea
| | - Hyun Jee Hwang
- Department of Dermatology, Yonsei University Wonju College of Medicine, 20 Ilsan-ro, Wonju, 26426, Republic of Korea
| | - Eunjung Kim
- Department of Dermatology, Yonsei University Wonju College of Medicine, 20 Ilsan-ro, Wonju, 26426, Republic of Korea
| | - Sung Ha Lim
- Department of Dermatology, Yonsei University Wonju College of Medicine, 20 Ilsan-ro, Wonju, 26426, Republic of Korea
| | - Choon Hee Chung
- Department of Endocrinology and Metabolism, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
- Research Institute of Metabolism and Inflammation, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - Eung Ho Choi
- Department of Dermatology, Yonsei University Wonju College of Medicine, 20 Ilsan-ro, Wonju, 26426, Republic of Korea.
- Research Institute of Metabolism and Inflammation, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea.
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Hulme J. Staphylococcus Infection: Relapsing Atopic Dermatitis and Microbial Restoration. Antibiotics (Basel) 2023; 12:antibiotics12020222. [PMID: 36830133 PMCID: PMC9952585 DOI: 10.3390/antibiotics12020222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 01/15/2023] [Accepted: 01/18/2023] [Indexed: 01/22/2023] Open
Abstract
Atopic Dermatitis (AD) skin is susceptible to Staphylococcus aureus (SA) infection, potentially exposing it to a plethora of toxins and virulent determinants, including Panton-Valentine leukocidin (PVL) (α-hemolysin (Hla) and phenol-soluble modulins (PSMs)), and superantigens. Depending on the degree of infection (superficial or invasive), clinical treatments may encompass permanganate (aq) and bleach solutions coupled with intravenous/oral antibiotics such as amoxicillin, vancomycin, doxycycline, clindamycin, daptomycin, telavancin, linezolid, or tigecycline. However, when the skin is significantly traumatized (sheathing of epidermal sections), an SA infection can rapidly ensue, impairing the immune system, and inducing local and systemic AD presentations in susceptible areas. Furthermore, when AD presents systemically, desensitization can be long (years) and intertwined with periods of relapse. In such circumstances, the identification of triggers (stress or infection) and severity of the flare need careful monitoring (preferably in real-time) so that tailored treatments targeting the underlying pathological mechanisms (SA toxins, elevated immunoglobulins, impaired healing) can be modified, permitting rapid resolution of symptoms.
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Affiliation(s)
- John Hulme
- Gachon Bio-Nano Institute, Gachon University, Seongnam-si 461-701, Republic of Korea
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6
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Karami H, Nomiri S, Ghasemigol M, Mehrvarzian N, Derakhshani A, Fereidouni M, Mirimoghaddam M, Safarpour H. CHAC1 as a novel biomarker for distinguishing alopecia from other dermatological diseases and determining its severity. IET Syst Biol 2022; 16:173-185. [PMID: 35983595 PMCID: PMC9469792 DOI: 10.1049/syb2.12048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 06/11/2022] [Accepted: 07/20/2022] [Indexed: 11/20/2022] Open
Abstract
Alopecia Areata (AA) is characterised by an autoimmune response to hair follicles (HFs) and its exact pathobiology remains unclear. The current study aims to look into the molecular changes in the skin of AA patients as well as the potential underlying molecular mechanisms of AA in order to identify potential candidates for early detection and treatment of AA. We applied Weighted Gene Co-expression Network Analysis (WGCNA) to identify key modules, hub genes, and mRNA-miRNA regulatory networks associated with AA. Furthermore, Chi2 as a machine-learning algorithm was used to compute the gene importance in AA. Finally, drug-target construction revealed the potential of repositioning drugs for the treatment of AA. Our analysis using four AA data sets established a network strongly correlated to AA pathogenicity based on GZMA, OXCT2, HOXC13, KRT40, COMP, CHAC1, and KRT83 hub genes. Interestingly, machine learning introduced these genes as important in AA pathogenicity. Besides that, using another ten data sets, we showed that CHAC1 could clearly distinguish AA from similar clinical phenotypes, such as scarring alopecia due to psoriasis. Also, two FDA-approved drug candidates and 30 experimentally validated miRNAs were identified that affected the co-expression network. Using transcriptome analysis, suggested CHAC1 as a potential diagnostic predictor to diagnose AA.
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Affiliation(s)
- Hassan Karami
- Student Research CommitteeFaculty of MedicineBirjand University of Medical SciencesBirjandIran
| | - Samira Nomiri
- Department of BiochemistryFaculty of MedicineBirjand University of Medical SciencesBirjandIran
| | | | - Niloufar Mehrvarzian
- Department of Pharmaceutical NanotechnologyFaculty of PharmacyMashhad University of Medical SciencesMashhadIran
| | - Afshin Derakhshani
- McCaig Institute, Hotchkiss Brain InstituteSnyder Institute for Chronic DiseasesUniversity of CalgaryCalgary, AlbertaCanada,Department of Biochemistry and Molecular BiologyUniversity of CalgaryCalgaryAlbertaCanada
| | - Mohammad Fereidouni
- Cellular and Molecular Research CenterBirjand University of Medical SciencesBirjandIran
| | | | - Hossein Safarpour
- Cellular and Molecular Research CenterBirjand University of Medical SciencesBirjandIran
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Mallick P, Maity S, Chakrabarti O, Chakrabarti S. Role of systems biology and multi-omics analyses in delineating spatial interconnectivity and temporal dynamicity of ER stress mediated cellular responses. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2022; 1869:119210. [PMID: 35032474 DOI: 10.1016/j.bbamcr.2022.119210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/01/2021] [Accepted: 12/30/2021] [Indexed: 06/14/2023]
Abstract
The endoplasmic reticulum (ER) is a membranous organelle involved in calcium storage, lipid biosynthesis, protein folding and processing. Many patho-physiological conditions and pharmacological agents are known to perturb normal ER function and can lead to ER stress, which severely compromise protein folding mechanism and hence poses high risk of proteotoxicity. Upon sensing ER stress, the different stress signaling pathways interconnect with each other and work together to preserve cellular homeostasis. ER stress response is a part of the integrative stress response (ISR) and might play an important role in the pathogenesis of chronic neurodegenerative diseases, where misfolded protein accumulation and cell death are common. The initiation, manifestation and progression of ER stress mediated unfolded protein response (UPR) is a complex procedure involving multiple proteins, pathways and cellular organelles. To understand the cause and consequences of such complex processes, implementation of an integrative holistic approach is required to identify novel players and regulators of ER stress. As multi-omics data-based systems analyses have shown potential to unravel the underneath molecular mechanism of complex biological systems, it is important to emphasize the utility of this approach in understanding the ER stress biology. In this review we first discuss the ER stress signaling pathways and regulatory players, along with their inter-connectivity. We next highlight the importance of systems and network biology approaches using multi-omics data in understanding ER stress mediated cellular responses. This report would help advance our current understanding of the multivariate spatial interconnectivity and temporal dynamicity of ER stress.
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Affiliation(s)
- Priyanka Mallick
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, IICB TRUE Campus, CN-6, Sector 5, Salt Lake, Kolkata Pin 700091, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Sebabrata Maity
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, India
| | - Oishee Chakrabarti
- Biophysics & Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India; Homi Bhabha National Institute, India.
| | - Saikat Chakrabarti
- Structural Biology and Bioinformatics Division, CSIR-Indian Institute of Chemical Biology, IICB TRUE Campus, CN-6, Sector 5, Salt Lake, Kolkata Pin 700091, WB, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India.
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Evtushenko NA, Beilin AK, Kosykh AV, Vorotelyak EA, Gurskaya NG. Keratins as an Inflammation Trigger Point in Epidermolysis Bullosa Simplex. Int J Mol Sci 2021; 22:ijms222212446. [PMID: 34830328 PMCID: PMC8624175 DOI: 10.3390/ijms222212446] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 11/11/2021] [Accepted: 11/12/2021] [Indexed: 12/21/2022] Open
Abstract
Epidermolysis bullosa simplex (EBS) is a group of inherited keratinopathies that, in most cases, arise due to mutations in keratins and lead to intraepidermal ruptures. The cellular pathology of most EBS subtypes is associated with the fragility of the intermediate filament network, cytolysis of the basal layer of the epidermis, or attenuation of hemidesmosomal/desmosomal components. Mutations in keratins 5/14 or in other genes that encode associated proteins induce structural disarrangements of different strengths depending on their locations in the genes. Keratin aggregates display impaired dynamics of assembly and diminished solubility and appear to be the trigger for endoplasmic reticulum (ER) stress upon being phosphorylated by MAPKs. Global changes in cellular signaling mainly occur in cases of severe dominant EBS mutations. The spectrum of changes initiated by phosphorylation includes the inhibition of proteasome degradation, TNF-α signaling activation, deregulated proliferation, abnormal cell migration, and impaired adherence of keratinocytes. ER stress also leads to the release of proinflammatory danger-associated molecular pattern (DAMP) molecules, which enhance avalanche-like inflammation. Many instances of positive feedback in the course of cellular stress and the development of sterile inflammation led to systemic chronic inflammation in EBS. This highlights the role of keratin in the maintenance of epidermal and immune homeostasis.
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Affiliation(s)
- Nadezhda A. Evtushenko
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Ostrovityanova 1, 117997 Moscow, Russia; (N.A.E.); (A.K.B.); (A.V.K.)
| | - Arkadii K. Beilin
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Ostrovityanova 1, 117997 Moscow, Russia; (N.A.E.); (A.K.B.); (A.V.K.)
- Koltzov Institute of Developmental Biology of Russian Academy of Sciences, Vavilova 26, 119334 Moscow, Russia;
| | - Anastasiya V. Kosykh
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Ostrovityanova 1, 117997 Moscow, Russia; (N.A.E.); (A.K.B.); (A.V.K.)
| | - Ekaterina A. Vorotelyak
- Koltzov Institute of Developmental Biology of Russian Academy of Sciences, Vavilova 26, 119334 Moscow, Russia;
| | - Nadya G. Gurskaya
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Pirogov Russian National Research Medical University, Ostrovityanova 1, 117997 Moscow, Russia; (N.A.E.); (A.K.B.); (A.V.K.)
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Miklukho-Maklaya 16/10, 117997 Moscow, Russia
- Correspondence:
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Vildanova M, Vishnyakova P, Saidova A, Konduktorova V, Onishchenko G, Smirnova E. Gibberellic Acid Initiates ER Stress and Activation of Differentiation in Cultured Human Immortalized Keratinocytes HaCaT and Epidermoid Carcinoma Cells A431. Pharmaceutics 2021; 13:pharmaceutics13111813. [PMID: 34834228 PMCID: PMC8622727 DOI: 10.3390/pharmaceutics13111813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 12/30/2022] Open
Abstract
Diterpenoid plant hormone gibberellic acid (GA) plays an important role in regulation of plant growth and development and is commonly used in agriculture for activation of plant growth and food production. It is known that many plant-derived compounds have miscellaneous biological effects on animals and humans, influencing specific cellular functions and metabolic pathways. However, the effect of GA on animal and human cells remains controversial. We investigated the effect of GA on cultured human cell lines of epidermoid origin-immortalized non-tumorigenic keratinocytes HaCaT and carcinoma A431 cells. We found that at a non-toxic dose, GA upregulated the expression of genes associated with the ER stress response-CHOP, sXBP1, GRP87 in both cell lines, and ATF4 predominantly in A431 cells. We also showed that GA was more effective in upregulating the production of ER stress marker GRP78, autophagy marker LC3B-II, and differentiation markers involucrin and filaggrin in A431 cells than in HaCaT. We conclude that GA induces mild ER stress in both cell lines, followed by the activation of differentiation via upregulation of autophagy. However, in comparison with immortalized keratinocytes HaCaT, GA is more effective in inducing differentiation of carcinoma A431 cells, probably due to the inherently lower differentiation status of A431 cells. The activation of differentiation in poorly differentiated and highly malignant A431 cells by GA may lower the level of malignancy of these cells and decrease their tumorigenic potential.
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Affiliation(s)
- Mariya Vildanova
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 12, 119234 Moscow, Russia; (A.S.); (V.K.); (G.O.); (E.S.)
- Correspondence: or
| | - Polina Vishnyakova
- National Medical Research Center for Obstetrics, Laboratory of Regenerative Medicine, Gynecology and Perinatology Named after Academician V.I. Kulakov of Ministry of Healthcare of Russian Federation, 4 Oparina Street, 117997 Moscow, Russia;
- Histology Department, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
| | - Aleena Saidova
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 12, 119234 Moscow, Russia; (A.S.); (V.K.); (G.O.); (E.S.)
| | - Victoria Konduktorova
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 12, 119234 Moscow, Russia; (A.S.); (V.K.); (G.O.); (E.S.)
| | - Galina Onishchenko
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 12, 119234 Moscow, Russia; (A.S.); (V.K.); (G.O.); (E.S.)
| | - Elena Smirnova
- Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory, 1, Bld. 12, 119234 Moscow, Russia; (A.S.); (V.K.); (G.O.); (E.S.)
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10
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Takeichi T, Akiyama M. KLICK Syndrome Linked to a POMP Mutation Has Features Suggestive of an Autoinflammatory Keratinization Disease. Front Immunol 2020; 11:641. [PMID: 32425927 PMCID: PMC7203212 DOI: 10.3389/fimmu.2020.00641] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 03/20/2020] [Indexed: 12/17/2022] Open
Abstract
Keratosis linearis with ichthyosis congenita and sclerosing keratoderma (KLICK) syndrome is a rare autosomal recessive skin disorder characterized by palmoplantar keratoderma, linear hyperkeratotic plaques, ichthyosiform scaling, circular constrictions around the fingers, and numerous papules distributed linearly in the arm folds and on the wrists. Histologically, the affected skin shows hypertrophy and hyperplasia of the spinous, granular, and horny epidermal layers with mild infiltration of inflammatory cells in the upper dermis. There are 14 patients with KLICK syndrome described in the literature, and they all carry the same nucleotide deletion. Proteasome maturation protein (POMP), encoded by POMP, is an ubiquitously expressed protein that functions as a chaperone for proteasome maturation. KLICK syndrome is caused by a reduction in POMP levels that leads to proteasome insufficiency in differentiating keratinocytes. It is noteworthy that POMP is also known to be the causative gene for proteasome-associated autoinflammatory syndrome-2 (PRAAS2). It is considered that the disrupted proteasome assembly caused by the POMP mutation might lead to both skin inflammation and then hyperkeratosis in KLICK syndrome. Inflammation caused by the hyperactivation of innate immunity occasionally leads to inflammatory diseases of the skin, recently denoted as autoinflammatory keratinization diseases (AiKDs). We propose that KLICK syndrome caused by the specific 1-bp nucleotide deletion mutation in the regulatory region of POMP might be in a spectrum of proteasome-associated phenotypes.
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Affiliation(s)
- Takuya Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Vildanova MS, Saidova AA, Fokin AI, Potashnikova DM, Onishchenko GE, Smirnova EA. Jasmonic Acid Induces Endoplasmic Reticulum Stress with Different Outcome in Cultured Normal and Tumor Epidermal Cells. BIOCHEMISTRY (MOSCOW) 2019; 84:1047-1056. [PMID: 31693464 DOI: 10.1134/s0006297919090074] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Plant hormones produce cytotoxic effect on human cells and can trigger the processes unrelated to cell death, e.g., biosynthetic system stress. The goal of this study was to investigate activation of the endoplasmic reticulum (ER) stress by jasmonic acid (JA) and to distinguish between the responses of cultured immortalized non-tumorigenic HaCaT cells and epidermoid carcinoma A431 cells to this plant hormone. JA was used in the concentration of 2 mM, as it suppressed cell proliferation in both cell lines. We analyzed expression of genes associated with the activation of ER stress (GRP78, ATF4, CHOP), the structure of the ER and Golgi complex, and synthetic processes in the HaCaT and A431 cell lines. JA induced expression of genes responsible for the activation of ER stress and caused hypertrophic changes in the Golgi complex in both cell lines. However, the patterns of gene expression in the HaCaT and A431 cells were different, and higher levels of involucrin synthesis were observed in A431 but not in HaCaT cells, suggesting that JA activated differentiation of the tumor A431 cells only. Therefore, JA induced ER stress in both cell lines, but the consequences of ER stress were different for the epidermal immortalized non-tumorigenic and tumor cells.
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Affiliation(s)
- M S Vildanova
- Lomonosov Moscow State University, Faculty of Biology, Moscow, 119991, Russia.
| | - A A Saidova
- Lomonosov Moscow State University, Faculty of Biology, Moscow, 119991, Russia
| | - A I Fokin
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
| | - D M Potashnikova
- Lomonosov Moscow State University, Faculty of Biology, Moscow, 119991, Russia
| | - G E Onishchenko
- Lomonosov Moscow State University, Faculty of Biology, Moscow, 119991, Russia
| | - E A Smirnova
- Lomonosov Moscow State University, Faculty of Biology, Moscow, 119991, Russia
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Michaletti A, Mancini M, Smirnov A, Candi E, Melino G, Zolla L. Multi-omics profiling of calcium-induced human keratinocytes differentiation reveals modulation of unfolded protein response signaling pathways. Cell Cycle 2019; 18:2124-2140. [PMID: 31291818 DOI: 10.1080/15384101.2019.1642066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
By proteomic, metabolomic and transcriptomic approaches we shed light on the molecular mechanism by which human keratinocytes undergo to terminal differentiation upon in vitro calcium treatment. Proteomic analysis revealed a selective induction of the ribosomal proteins RSSA, an inhibitor of cell proliferation and inducer of differentiation, HSP 60, a protein folding chaperone and GRP78, an unfolding protein response signal. Additionally, we observed an induction of EF1D, a transcription factor for genes that contain heat-shock responsive elements. Conversely, RAD23, a protein involved in regulating ER-associated protein degradation was down-regulated. All these modifications indicated an ER stress response, which in turn activated the unfolded protein response signaling pathway through ATF4, as confirmed both by the modulation of amino acids metabolism genes, such as XBP1, PDI and GPR78, and by the metabolomic analysis. Finally, we detected a reduction of PDI protein, as confirmed by the increase of oxidized glutathione. Metabolome analysis indicated that glycolysis failed to fuel the Krebs cycle, which continued to decrease during differentiation, at glance with the PPP pathway, allowing NADH production and glutathione reduction. Since unfolded protein response is linked to keratinization, these results may be useful for studying pathological mechanisms as well as potential treatments for different pathological conditions. Abbreviation: UPR, unfolded protein response; HEK, human epidermal keratinocytes; HKGS, human keratinocytes growth factor.
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Affiliation(s)
- Anna Michaletti
- a Department of Ecological and Biological Sciences (DEB), University of Tuscia , Viterbo , Italy
| | - Mara Mancini
- b Biochemistry Laboratory, Istituto Dermopatico dell'Immacolata, IDI-IRCCS , Rome , Italy
| | - Artem Smirnov
- c Department of Experimental Medicine, University of Rome "Tor Vergata" , Rome , Italy
| | - Eleonora Candi
- b Biochemistry Laboratory, Istituto Dermopatico dell'Immacolata, IDI-IRCCS , Rome , Italy.,c Department of Experimental Medicine, University of Rome "Tor Vergata" , Rome , Italy
| | - Gerry Melino
- c Department of Experimental Medicine, University of Rome "Tor Vergata" , Rome , Italy.,d MRC Toxicology Unit, Cambridge University , Leicester , UK
| | - Lello Zolla
- e Agriculture and Forest Sciences (DAFNE), University of Tuscia , Viterbo , Italy
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Easton JA, Albuloushi AK, Kamps MAF, Brouns GHMR, Broers JLV, Coull BJ, Oji V, van Geel M, van Steensel MAM, Martin PE. A rare missense mutation in GJB3
(Cx31G45E) is associated with a unique cellular phenotype resulting in necrotic cell death. Exp Dermatol 2018; 28:1106-1113. [DOI: 10.1111/exd.13542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Jennifer A. Easton
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
- GROW School for Oncology and Developmental Biology; Maastricht University; Maastricht The Netherlands
| | - Ahmad K. Albuloushi
- Department of Life Sciences; School of Health and Life Sciences; Glasgow Caledonian University; Glasgow UK
| | - Miriam A. F. Kamps
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
- GROW School for Oncology and Developmental Biology; Maastricht University; Maastricht The Netherlands
- Department of Genetics and Cell Biology; Maastricht University; Maastricht The Netherlands
| | - Gladys H. M. R. Brouns
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
| | - Jos L. V. Broers
- GROW School for Oncology and Developmental Biology; Maastricht University; Maastricht The Netherlands
- Department of Genetics and Cell Biology; Maastricht University; Maastricht The Netherlands
| | - Barry J. Coull
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
- Division of Biological Chemistry and Drug Discovery; College of Life Sciences; University of Dundee; Dundee UK
| | - Vincent Oji
- Department of Dermatology; University Hospital Münster; Münster Germany
| | - Michel van Geel
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
- GROW School for Oncology and Developmental Biology; Maastricht University; Maastricht The Netherlands
| | - Maurice A. M. van Steensel
- Department of Dermatology; Maastricht University Medical Centre; Maastricht The Netherlands
- GROW School for Oncology and Developmental Biology; Maastricht University; Maastricht The Netherlands
- Skin Research Institute of Singapore; Institute of Medical Biology, Immunos; Singapore
| | - Patricia E. Martin
- Department of Life Sciences; School of Health and Life Sciences; Glasgow Caledonian University; Glasgow UK
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Voegeli R, Monneuse JM, Schoop R, Summers B, Rawlings AV. The effect of photodamage on the female Caucasian facial stratum corneum corneome using mass spectrometry-based proteomics. Int J Cosmet Sci 2017; 39:637-652. [PMID: 28865110 DOI: 10.1111/ics.12426] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 08/29/2017] [Indexed: 12/23/2022]
Abstract
BACKGROUND The effect of photodamage on facial stratum corneum (SC) is still poorly understood. OBJECTIVE To describe the SC proteome from tape strippings of Caucasian SC from photoexposed cheek and photoprotected post-auricular (PA) site, a global analysis of photodamage on the skin will be developed leading to a better understanding of keratinocyte signalling pathways and identification of new molecular targets for the treatment of photoaged skin. METHODS Female Caucasian subjects had nine consecutive tape strippings taken from their cheeks and PA site. Proteins were extracted and the trypsin-digested peptides were analysed by nanochromatography coupled to a high-resolution mass spectrometer. Data-dependent acquisition allowed protein identification that was processed by Paragon algorithm of Protein Pilot software. RESULTS Changes in the levels of epidermal differentiation proteins were apparent indicating poor epidermal differentiation and SC maturation (keratins, cornified envelope (CE) proteins) on photoexposed cheeks. Differences in protease-anti-protease balance were observed for corneodesmolysis (favouring desquamation) and filaggrinolysis (favouring reduced filaggrin processing). 12R-LOX, a CE maturation enzyme, was reduced in photodamaged skin but not transglutaminases. Changes in signal keratinocyte transduction pathway markers were demonstrated especially by reduced levels of downstream signalling markers such as calreticulin (unfolded protein response; UPR) and increased level of stratifin (target of rapamycin; mTOR). Evidence for impaired proteostasis was apparent by reduced levels of a key proteasomal subunit (subunit beta type-6). Finally, key antioxidant proteins were upregulated except catalase. CONCLUSION Clear examples of poor keratinocyte differentiation and associated metabolic and signalling pathways together with reduced SC maturation were identified in photodamaged facial SC. Corneocyte immaturity was evident with changes in CE proteins. Particularly, the reduction in 12R-LOX is a novel finding in photodamaged skin and supports the lack of SC maturation. Moreover, filaggrinolysis was reduced, whereas corneodesmolysis was enhanced. From our results, we propose that there is a poor cross-talk between the keratinocyte endoplasmic reticulum UPR, proteasome network and autophagy machinery that possibly leads to impaired keratinocyte proteostasis. Superimposed on these aberrations is an apparently enhanced mTOR pathway that also contributes to reduced SC formation and maturation. Our results clearly indicate a corneocyte scaffold disorder in photodamaged cheek SC.
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Affiliation(s)
- R Voegeli
- DSM Nutritional Products Ltd., Wurmisweg 571, 4303, Kaiseraugst, Switzerland
| | - J-M Monneuse
- Phylogene S.A., 62, Route Nationale 113, 30620, Bernis, France
| | - R Schoop
- DSM Nutritional Products Ltd., Wurmisweg 571, 4303, Kaiseraugst, Switzerland
| | - B Summers
- Photobiology Laboratory, Sefako Makgatho Health Sciences University, Molotlegi St, Medunsa 0204, Pretoria, South Africa
| | - A V Rawlings
- AVR Consulting Ltd., 26 Shavington Way, Northwich, Cheshire CW9 8FH, UK
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Li S, Zhu G, Yang Y, Jian Z, Guo S, Dai W, Shi Q, Ge R, Ma J, Liu L, Li K, Luan Q, Wang G, Gao T, Li C. Oxidative stress drives CD8 + T-cell skin trafficking in patients with vitiligo through CXCL16 upregulation by activating the unfolded protein response in keratinocytes. J Allergy Clin Immunol 2016; 140:177-189.e9. [PMID: 27826097 DOI: 10.1016/j.jaci.2016.10.013] [Citation(s) in RCA: 116] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 08/17/2016] [Accepted: 10/03/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND In patients with vitiligo, an increased reactive oxygen species (ROS) level has been proved to be a key player during disease initiation and progression in melanocytes. Nevertheless, little is known about the effects of ROS on other cells involved in the aberrant microenvironment, such as keratinocytes and the following immune events. CXCL16 is constitutively expressed in keratinocytes and was recently found to mediate homing of CD8+ T cells in human skin. OBJECTIVE We sought to explicate the effect of oxidative stress on human keratinocytes and its capacity to drive CD8+ T-cell trafficking through CXCL16 regulation. METHODS We first detected putative T-cell skin-homing chemokines and ROS in serum and lesions of patients with vitiligo. The production of candidate chemokines was detected by using quantitative real-time PCR and ELISA in keratinocytes exposed to H2O2. Furthermore, the involved mediators were analyzed by using quantitative real-time PCR, Western blotting, ELISA, and immunofluorescence. Next, we tested the chemotactic migration of CD8+ T cells from patients with vitiligo mediated by the CXCL16-CXCR6 pair using the transwell assay. RESULTS CXCL16 expression increased and showed a positive correlation with oxidative stress levels in serum and lesions of patients with vitiligo. The H2O2-induced CXCL16 expression was due to the activation of 2 unfolded protein response pathways: kinase RNA (PKR)-like ER kinase-eukaryotic initiation factor 2α and inositol-requiring enzyme 1α-X-box binding protein 1. CXCL16 produced by stressed keratinocytes induced migration of CXCR6+CD8+ T cells derived from patients with vitiligo. CXCR6+CD8+ T-cell skin infiltration is accompanied by melanocyte loss in lesions of patients with vitiligo. CONCLUSION Our study demonstrated that CXCL16-CXCR6 mediates CD8+ T-cell skin trafficking under oxidative stress in patients with vitiligo. The CXCL16 expression in human keratinocytes induced by ROS is, at least in part, caused by unfolded protein response activation.
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Affiliation(s)
- Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Guannan Zhu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Yuqi Yang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Zhe Jian
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Sen Guo
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Wei Dai
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Qiong Shi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Rui Ge
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Jingjing Ma
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Ling Liu
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Kai Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Qi Luan
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Gang Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Tianwen Gao
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Shaanxi, China.
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16
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Imiquimod induces ER stress and Ca(2+) influx independently of TLR7 and TLR8. Biochem Biophys Res Commun 2016; 473:789-794. [PMID: 27003259 DOI: 10.1016/j.bbrc.2016.03.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Accepted: 03/18/2016] [Indexed: 10/22/2022]
Abstract
Endoplasmic reticulum (ER) stress is a physiological response to protein overload or misfolded proteins in the ER. Certain anti-cancer drugs, e.g. bortezomib and nelfinavir, induce ER stress implying that this could be a successful therapeutic strategy against several forms of cancer. To find novel ER-stress inducers we screened a panel of natural and synthetic Toll-like receptor (TLR) agonists against human keratinocytes and identified the anti-cancer drug imiquimod (IMQ) as a potent inducer of ER stress. Other TLR7 and TLR8 agonists, including resiquimod and gardiquimod, did not induce ER stress, demonstrating that IMQ induces ER stress independently of TLR7 and TLR8. We further confirmed this by showing that IMQ could still induce ER stress in mouse Tlr7(-/-) cells. IMQ also induced a rapid and transient influx of extracellular Ca(2+) together with the release of Ca(2+) from internal stores. Depletion of Ca(2+) from the ER is a known cause of ER stress suggesting that IMQ induces ER stress via depletion of ER Ca(2+). The ER-stress inducing property of IMQ is possibly of importance for its efficacy in treating basal cell carcinoma, in situ melanoma, and squamous cell carcinoma. Our data could potentially be harnessed for rational design of even more potent ER-stress inducers and new anti-cancer drugs.
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17
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Sugiura K, Akiyama M. Update on autosomal recessive congenital ichthyosis: mRNA analysis using hair samples is a powerful tool for genetic diagnosis. J Dermatol Sci 2015; 79:4-9. [DOI: 10.1016/j.jdermsci.2015.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 04/20/2015] [Indexed: 01/06/2023]
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Li CX, Wen J, Zeng K, Tian X, Li XM, Zhang XB. Ultrastructural study of symmetrical acral keratoderma. Ultrastruct Pathol 2014; 38:420-4. [PMID: 24956169 DOI: 10.3109/01913123.2014.930080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Symmetrical acral keratoderma is characterized by symmetrical brown hyperkeratotic patches on the acral extremities. However, no studies about its electron microscopic examination have been documented. OBJECTIVE Our study was performed to further characterize the histopathology of symmetrical acral keratoderma. METHODS A biopsy was taken from brown hyperkeratotic patches on the wrists. Investigative studies included light and electron microscopy. RESULTS Light microscopy showed epidermal basket-weave hyperkeratosis and acanthosis. Ultrastructurally, the epidermis was thickened by acanthosis and compact stratum corneum. The horny cell layers were remarkably thicker in clinical affected skin than in adjacent clinically unaffected and healthy skin. The keratin filaments were remarkably clumped or aggregated and irregularly distributed in the horny, spinous, granular and basal cell layers. The tonofilaments formed tight clumps or aggregated at the perinuclear cytoplasm. CONCLUSION The main ultrastructural features of symmetrical acral keratoderma were epidermal hyperkeratosis and abnormalities of the keratin filaments and tonofilaments.
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Affiliation(s)
- Chang-Xing Li
- Department of Dermatology, Nanfang Hospital, South Medical University , Guangzhou, Guangdong Province , People's Republic of China
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Pavli M, Farmaki E, Merkourea S, Vastardis H, Sklavounou A, Tzerbos F, Chatzistamou I. Endoplasmic Reticulum Stress-Associated Chaperones, Bip/GRP78 and Calnexin are Overexpressed in Keratocystic Odontogenic Tumours. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2014; 5:e3. [PMID: 24800053 PMCID: PMC4007369 DOI: 10.5037/jomr.2014.5103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 03/28/2014] [Indexed: 12/18/2022]
Abstract
Objectives Odontogenic keratocysts (OKCs) are developmental
cysts that have been reclassified according World Health Organization
(WHO), to keratocystic odontogenic tumours (KCOTs), a term that better
reflects their neoplastic nature. The aim of present study is to
evaluate the induction of stress of the endoplasmic reticulum and
execution of the resulting unfolded protein response in keratinocystic
odontogenic tumours. Material and Methods We analyzed by
immunohistochemistry the expression of the chaperones BiP/GRP78 and calnexin in
24 cases of KCOTs. As controls, we have used 9 cases of periapical or radicular
cysts (PACs) and 5 cases of Fibromas (FBs). The PACs and the FBs were included
in the analysis, as PACs are the most common type of inflammatory odontogenic
cysts of and FBs, as lesions of the connective tissue with unaffected
epithelium. Results Analysis revealed a strong association between
both BiP/GRP78 and calnexin expression and KCOTs: 18 out of 24 (75%) KCOTs
expressed BiP/GRP78 as opposed to 1 out of 9 (13%) PACs, and none of 5 FBs
evaluated (P < 0.001, x2-test). Calnexin was expressed in 11 out of
24 KCOTs (46%) but only one out of 9 (13%) PACs, and none of the 5 FBs analyzed
(P < 0.001, x2-test). Conclusions Study results imply
that induction of endoplasmic reticulum stress maybe of diagnostic value in
keratocystic odontogenic tumours characterization. In addition to recent
findings suggesting that endoplasmic reticulum stress plays a causative role in
keratinization of epithelia, pharmacological interference with the execution of
the unfolded protein response should be considered for the management of
keratocystic odontogenic tumours.
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Affiliation(s)
- Maria Pavli
- Clinic of Oral and Maxillofacial Surgery, Dental School, National and Kapodistrian University of Athens Greece
| | - Elena Farmaki
- Department of Biochemistry, Medical School, National and Kapodistrian University of Athens Greece
| | - Stavroula Merkourea
- Department of Oral Medicine and Pathology, Dental School, National and Kapodistrian University of Athens Greece
| | - Helen Vastardis
- Department of Basic Sciences, Dental School, National and Kapodistrian University of Athens Greece
| | - Alexandra Sklavounou
- Department of Biochemistry, Medical School, National and Kapodistrian University of Athens Greece
| | - Fotios Tzerbos
- Clinic of Oral and Maxillofacial Surgery, Dental School, National and Kapodistrian University of Athens Greece
| | - Ioulia Chatzistamou
- Department of Basic Sciences, Dental School, National and Kapodistrian University of Athens Greece
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