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Bai R, Wu S, Liu X, Xing Z, Luo R, Zhang W, Liu M, Ma X, Lei H, Wang N, Zheng Y. Bioinformatic Analysis to Identify and Cellular Experiments to Validate Autophagy-related Genes in Psoriasis. Comb Chem High Throughput Screen 2024; 27:1318-1328. [PMID: 37881076 DOI: 10.2174/0113862073238968230920054712] [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: 11/28/2022] [Revised: 05/24/2023] [Accepted: 06/05/2023] [Indexed: 10/27/2023]
Abstract
PURPOSE To explore differentially expressed genes (DEGs) associated with autophagy in psoriasis using bioinformatics analysis and verify them in an M5-induced psoriatic cell model. METHODS We obtained gene expression microarray data from patients with psoriasis and normal skin tissues from the dataset GSE78097 of the NCBI Gene Expression Omnibus (GEO) database. R software was used to identify DEGs associated with autophagy in psoriasis. Proteinprotein interaction (PPI) and correlation analyses were used to show interactions between certain genes. Their potential biological roles were determined using Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. Finally, all the DEGs associated with autophagy in psoriasis were validated in a psoriatic cell model by RT-qPCR. RESULTS 28 DEGs associated with autophagy were identified. These genes were linked to one another, and the most connected hub gene was VEGFA, according to PPI analysis. GO and KEGG enrichment analyses revealed various biological pathways associated with autophagy. The RT-qPCR findings of the expression of 18 genes in the psoriatic cell model confirmed the bioinformatics analysis results. The five genes with the most significant differences were IL24, CCL2, NAMPT, PPP1R15A, and SPHK1. CONCLUSION We identified DEGs associated with autophagy in patients with psoriasis. IL24, CCL2, NAMPT, PPP1R15A, and SPHK1 were identified as important genes that may influence psoriasis development through the regulation of autophagy.
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Affiliation(s)
- Ruimin Bai
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Shaobo Wu
- Department of Medicine, Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Xinyi Liu
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Zixuan Xing
- Department of Medicine, Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Ruiting Luo
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Wen Zhang
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Meng Liu
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Xinyu Ma
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Hao Lei
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Ning Wang
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
| | - Yan Zheng
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, No.277 Yanta West Road, Xi'an, Shaanxi, 710061, China
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Zhan YP, Chen BS. Drug Target Identification and Drug Repurposing in Psoriasis through Systems Biology Approach, DNN-Based DTI Model and Genome-Wide Microarray Data. Int J Mol Sci 2023; 24:10033. [PMID: 37373186 DOI: 10.3390/ijms241210033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/08/2023] [Accepted: 06/10/2023] [Indexed: 06/29/2023] Open
Abstract
Psoriasis is a chronic skin disease that affects millions of people worldwide. In 2014, psoriasis was recognized by the World Health Organization (WHO) as a serious non-communicable disease. In this study, a systems biology approach was used to investigate the underlying pathogenic mechanism of psoriasis and identify the potential drug targets for therapeutic treatment. The study involved the construction of a candidate genome-wide genetic and epigenetic network (GWGEN) through big data mining, followed by the identification of real GWGENs of psoriatic and non-psoriatic using system identification and system order detection methods. Core GWGENs were extracted from real GWGENs using the Principal Network Projection (PNP) method, and the corresponding core signaling pathways were annotated using the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Comparing core signaling pathways of psoriasis and non-psoriasis and their downstream cellular dysfunctions, STAT3, CEBPB, NF-κB, and FOXO1 are identified as significant biomarkers of pathogenic mechanism and considered as drug targets for the therapeutic treatment of psoriasis. Then, a deep neural network (DNN)-based drug-target interaction (DTI) model was trained by the DTI dataset to predict candidate molecular drugs. By considering adequate regulatory ability, toxicity, and sensitivity as drug design specifications, Naringin, Butein, and Betulinic acid were selected from the candidate molecular drugs and combined into potential multi-molecule drugs for the treatment of psoriasis.
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Affiliation(s)
- Yu-Ping Zhan
- Laboratory of Automatic Control, Signal Processing and Systems Biology, Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Bor-Sen Chen
- Laboratory of Automatic Control, Signal Processing and Systems Biology, Department of Electrical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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Akpinar U, Gur Aksoy G, Hayran Y, Firat Oguz E, Yalcın B. Serum levels of survivin in patients with psoriasis and their relation to disease characteristics. J Cosmet Dermatol 2021; 21:1721-1726. [PMID: 34197671 DOI: 10.1111/jocd.14318] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/22/2021] [Accepted: 06/29/2021] [Indexed: 12/22/2022]
Abstract
BACKGROUND Psoriasis is a chronic inflammatory disease in which T helper 1 (Th1) and Th17 cells play a major role in its pathogenesis. Studies have shown that keratinocytes in psoriatic tissue are resistant to apoptosis and have a high proliferation rate. Survivin is a multifunctional protein belonging to an apoptosis inhibitor family, which has significant effects on the immune system, such as activation of dendritic cells and T cells and immunomodulation. OBJECTIVES To investigate a possible relationship between serum survivin levels and psoriasis disease characteristics and severity. MATERIALS AND METHODS The present study included 84 patients with psoriasis who did not receive any systemic treatment for psoriasis in the last three months and 84 volunteers without psoriasis. Demographic data, smoking status, and alcohol consumption of the participants were questioned, and body mass index (BMI) was calculated. In the patient group, disease duration, family history, accompanying arthritis, and nail involvement were questioned and psoriasis area severity index (PASI) scores were calculated. Serum survivin levels were measured in all subjects. RESULTS Serum survivin level was significantly higher in the patients compared to the controls (p = 0.008). There was no relationship between serum survivin level and disease duration, family history, joint involvement, nail involvement, BMI, and PASI score (all p-values > 0.05). Serum survivin levels were significantly higher in smokers than non-smokers and in alcohol consumers than patients that did not drink alcohol in the psoriasis group (p = 0.034 and p = 0.006, respectively). CONCLUSION Serum survivin levels were higher in psoriasis patients than the control group. This finding suggests that this molecule, which is both immunomodulatory and an apoptosis inhibitor, may play a role in the pathogenesis of psoriasis. Significantly high serum survivin level in psoriasis patients who smoke suggests that smoking may act through survivin. More comprehensive studies are needed to evaluate the role of survivin in the pathogenesis of psoriasis and its relationship with smoking.
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Affiliation(s)
- Umit Akpinar
- Department of Dermatology, Ankara City Hospital, Ankara, Turkey
| | - Gunes Gur Aksoy
- Department of Dermatology, Ankara City Hospital, Ankara, Turkey
| | - Yildiz Hayran
- Department of Dermatology, Ankara City Hospital, Ankara, Turkey
| | - Esra Firat Oguz
- Department of Medical Biochemistry, Ankara City Hospital, Ankara, Turkey
| | - Basak Yalcın
- Department of Dermatology, Ankara City Hospital, Ankara, Turkey
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4
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Ozturk M, Ozaydın Yavuz G, Yavuz İH, Erten R, Gunes Bilgili S, An I. Immunohistochemical evaluation of the effect of acitretin and systemic steroid treatments on Ki‐67, Bcl‐2, and COX‐2 levels in cutaneous lichen planus patients. Int J Dermatol 2019; 58:1444-1450. [DOI: 10.1111/ijd.14543] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 04/30/2019] [Accepted: 05/20/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Murat Ozturk
- Department of Dermatology Health Sciences Universty, Van Training and Research Hospital Van Turkey
| | | | - İbrahim H. Yavuz
- Department of Dermatology, Faculty of Medicine Yuzuncu Yil Universty Van Turkey
| | - Remzi Erten
- Department of Pathology, Faculty of Medicine Yuzuncu Yil Universty Van Turkey
| | - Serap Gunes Bilgili
- Department of Dermatology, Faculty of Medicine Yuzuncu Yil Universty Van Turkey
| | - Isa An
- Department of Dermatology Sanliurfa Education and Research Hospital Sanliurfa Turkey
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Ding W, Cao Y, Xing F, Tao M, Fu H, Luo H, Yang X. A Preliminary Study of the Effect of Semaphorin 3A and Acitretin on the Proliferation, Migration, and Apoptosis of HaCaT Cells. Indian J Dermatol 2019; 64:250. [PMID: 31148871 PMCID: PMC6537688 DOI: 10.4103/ijd.ijd_179_18] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Background: Vascular endothelial growth factor (VEGF) is significantly elevated in psoriatic patients and is associated with the severity of the psoriasis. Due to the effect of inhibiting production of VEGF, acitretin can effectively treat psoriasis. Semaphorin 3A (Sema3A) restrain tumor growth and angiogenesis by partially reversing VEGF effects on tumor. However, the role of Sema3A in the pathogenesis of psoriasis is unclear. Aims and Objectives: This study aimed to investigate the effect of VEGF, Sema3A, and acitretin on HaCaT cells, to see whether Sema3A could be a beneficial factor in psoriasis, as well as acitretin. Materials and Methods: Functional analysis of VEGF, Sema3A, and acitretin was carried out using HaCaT cells cultured under different treatments. Cell counting kit-8 method, colony formation assay, flow cytometry, transwell migration, reverse transcription-polymerase chain reaction, and Western blot test were performed to measure proliferation, colony formation, migration, apoptosis, and the expression of Bcl2, Bax, Caspase 3, and Caspase 9 of HaCaT cells. Results: Sema3A and acitretin inhibited the proliferation, colony formation, and migration of HaCaT cells, while induced the apoptosis of HaCaT cells by inhibiting the expression of Bcl2, and promoting the expression of Bax, Caspase 3, and Caspase 9, which were opposite to VEGF. Sema3A and acitretin partially reversed the function of VEGF. Conclusions: Like acitretin, exogenous supplement of Sema3A may correct the abnormal proliferation and apoptosis procedure of HaCaT cells, and partially reverse the function of VEGF.
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Affiliation(s)
- Wei Ding
- Department of Dermatology, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Yi Cao
- Department of Dermatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Fengling Xing
- Department of Dermatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Maocan Tao
- Department of Dermatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hongyang Fu
- Department of Dermatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hongbin Luo
- Department of Dermatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Xiaohong Yang
- Department of Dermatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
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6
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Genetic signature to provide robust risk assessment of psoriatic arthritis development in psoriasis patients. Nat Commun 2018; 9:4178. [PMID: 30301895 PMCID: PMC6177414 DOI: 10.1038/s41467-018-06672-6] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Accepted: 09/14/2018] [Indexed: 01/13/2023] Open
Abstract
Psoriatic arthritis (PsA) is a complex chronic musculoskeletal condition that occurs in ~30% of psoriasis patients. Currently, no systematic strategy is available that utilizes the differences in genetic architecture between PsA and cutaneous-only psoriasis (PsC) to assess PsA risk before symptoms appear. Here, we introduce a computational pipeline for predicting PsA among psoriasis patients using data from six cohorts with >7000 genotyped PsA and PsC patients. We identify 9 new loci for psoriasis or its subtypes and achieve 0.82 area under the receiver operator curve in distinguishing PsA vs. PsC when using 200 genetic markers. Among the top 5% of our PsA prediction we achieve >90% precision with 100% specificity and 16% recall for predicting PsA among psoriatic patients, using conditional inference forest or shrinkage discriminant analysis. Combining statistical and machine-learning techniques, we show that the underlying genetic differences between psoriasis subtypes can be used for individualized subtype risk assessment. Approximately 30% of psoriasis patients develop psoriatic arthritis (PsA) and early diagnosis is crucial for the management of PsA. Here, Patrick et al. develop a computational pipeline involving statistical and machine-learning methods that can assess the risk of progression to PsA based on genetic markers.
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The Pathophysiological Mechanisms and the Quest for Biomarkers in Psoriasis, a Stress-Related Skin Disease. DISEASE MARKERS 2018; 2018:5823684. [PMID: 29619128 PMCID: PMC5829341 DOI: 10.1155/2018/5823684] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Revised: 12/20/2017] [Accepted: 12/28/2017] [Indexed: 12/24/2022]
Abstract
Psoriasis is a physically, emotionally, and socially invalidating multifactorial disorder, with a significant impact on the patients' quality of life. Stress is one of the leading triggers for psoriasis and has been associated with disease onset and subsequent flare-ups, while the flare-ups by themselves often lead to psychological discomfort. The treatment of psoriasis is individualized, depending on the patients' measurable severity of illness, as well as the impact the skin condition has on patients' quality of life, as assessed by standardized questionnaires. The clinical scales used nowadays for measuring the severity of psoriasis are characterized by low reproducibility and high variability between examiners. Hence, there is a real need to identify objectively measurable biomarkers to standardize the assessment of the severity of psoriasis. We aim to review the pathophysiological mechanisms involved in psoriasis, focusing on the most critical advances in psoriasis biomarker discovery, pointing out those biomarkers which have also been studied in other stress-related conditions, thus emphasizing the relationship between psoriasis and stress.
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8
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Abdel-Mawla MY, El-Kasheshy KA, Ghonemy S, Al Balat W, Elsayed AA. Role of Osteopontin in Psoriasis: An Immunohistochemical Study. Indian J Dermatol 2016; 61:301-7. [PMID: 27293251 PMCID: PMC4885183 DOI: 10.4103/0019-5154.182434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Background: Osteopontin (OPN) has been postulated to have a role in several T-helper (Th) 1 and Th 17-mediated diseases including psoriasis (PS), through multiple mechanisms sharing in the onset and worsening of PS, OPN shares in induction of keratinocyte proliferation through inhibiting keratinocyte apoptosis, OPN acts as a proinflammatory agent that participates in the upregulation of Th cell lineages, among which are the Th 1 and Th 17 cells. Aims and Objectives: The aim of this study was to explore the possible role of OPN in the pathogenesis of PS. Materials and Methods: This case–control study was carried out on 18 patients of chronic plaque PS (mean age 37.61 ± 14.48) and a control group of 18 apparently healthy volunteers (mean age 41.11 ± 11.02 years). Severity of PS was assessed using the PS area and severity index score. Two skin biopsies were taken from psoriatic patients. The first was taken from the lesional skin and the other from a counter apparently healthy site. Results: Our results showed statistically significant differences in the expression of OPN, between lesional and nonlesional skin as well as between nonlesional skin and control group (P ≤ 0.001). In addition, there was a significant difference in the expression of OPN, between control and lesional group. Conclusions: OPN involvement in PS enlarges the list of cytokines able to stimulate the inflammatory response in this disease, anti-OPN antibodies, may eventually become a useful therapeutic approach in PS.
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Affiliation(s)
- M Yousry Abdel-Mawla
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | | | - Soheir Ghonemy
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Walid Al Balat
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Amira Ahmed Elsayed
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Zeng X, Zhao J, Wu X, Shi H, Liu W, Cui B, Yang L, Ding X, Song P. PageRank analysis reveals topologically expressed genes correspond to psoriasis and their functions are associated with apoptosis resistance. Mol Med Rep 2016; 13:3969-76. [PMID: 27035208 DOI: 10.3892/mmr.2016.4999] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 02/19/2016] [Indexed: 11/06/2022] Open
Abstract
Psoriasis is an inflammatory skin disease. Deceleration in keratinocyte apoptosis is the most significant pathological change observed in psoriasis. To detect a meaningful correlation between the genes and gene functions associated with the mechanism underlying psoriasis, 927 differentially expressed genes (DEGs) were identified using the Gene Expression Omnibus database, GSE13355 [false discovery rate (FDR) <0.01; |log fold change >1] with the package in R langue. The selected DEGs were further constructed using the search tool for the retrieval of interacting genes, in order to analyze the interaction network between the DEGs. Subsequent to PageRank analysis, 14 topological hub genes were identified, and the functions and pathways in the hub genes network were analyzed. The top‑ranked hub gene, estrogen receptor‑1 (ESR1) is downregulated in psoriasis, exhibited binding sites enriched with genes possessing anti‑apoptotic functions. The ESR1 gene encodes estrogen receptor α (ERα); a reduced level of ERα expression provides a crucial foundation in response to the anti‑apoptotic activity of psoriatic keratinocytes by activating the expression of anti‑apoptotic genes. Furthermore, it was detected that the pathway that is associated most significantly with psoriasis is the pathways in cancer. Pathways in cancer may protect psoriatic cells from apoptosis by inhibition of ESR1 expression. The present study provides support towards the investigation of ESR1 gene function and elucidates that the interaction with anti‑apoptotic genes is involved in the underlying biological mechanisms of resistance to apoptosis in psoriasis. However, further investigation is required to confirm the present results.
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Affiliation(s)
- Xue Zeng
- Department of Dermatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
| | - Jingjing Zhao
- Key Laboratory of Advanced Control and Optimization for Chemical Processes of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Xiaohong Wu
- Department of Dermatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
| | - Hongbo Shi
- Key Laboratory of Advanced Control and Optimization for Chemical Processes of the Ministry of Education, East China University of Science and Technology, Shanghai 200237, P.R. China
| | - Wali Liu
- Department of Dermatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
| | - Bingnan Cui
- Department of Dermatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
| | - Li Yang
- Department of Otorhinolaryngology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
| | - Xu Ding
- Department of Dermatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
| | - Ping Song
- Department of Dermatology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing 201203, P.R. China
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Jiang S, Hinchliffe TE, Wu T. Biomarkers of An Autoimmune Skin Disease--Psoriasis. GENOMICS, PROTEOMICS & BIOINFORMATICS 2015; 13:224-33. [PMID: 26362816 PMCID: PMC4610974 DOI: 10.1016/j.gpb.2015.04.002] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 04/06/2015] [Accepted: 04/22/2015] [Indexed: 02/08/2023]
Abstract
Psoriasis is one of the most prevalent autoimmune skin diseases. However, its etiology and pathogenesis are still unclear. Over the last decade, omics-based technologies have been extensively utilized for biomarker discovery. As a result, some promising markers for psoriasis have been identified at the genome, transcriptome, proteome, and metabolome level. These discoveries have provided new insights into the underlying molecular mechanisms and signaling pathways in psoriasis pathogenesis. More importantly, some of these markers may prove useful in the diagnosis of psoriasis and in the prediction of disease progression once they have been validated. In this review, we summarize the most recent findings in psoriasis biomarker discovery. In addition, we will discuss several emerging technologies and their potential for novel biomarker discovery and diagnostics for psoriasis.
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Affiliation(s)
- Shan Jiang
- Department of Dermatology, Renmin Hospital of Wuhan University, Wuhan 430060, China; Department of Biomedical Engineering, University of Houston, Houston, TX 77204, USA
| | - Taylor E Hinchliffe
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204, USA
| | - Tianfu Wu
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204, USA.
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11
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May BH, Deng S, Zhang AL, Lu C, Xue CCL. In silico database screening of potential targets and pathways of compounds contained in plants used for psoriasis vulgaris. Arch Dermatol Res 2015; 307:645-57. [PMID: 26142738 DOI: 10.1007/s00403-015-1577-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 03/11/2015] [Accepted: 05/14/2015] [Indexed: 11/24/2022]
Abstract
Reviews and meta-analyses of clinical trials identified plants used as traditional medicines (TMs) that show promise for psoriasis. These include Rehmannia glutinosa, Camptotheca acuminata, Indigo naturalis and Salvia miltiorrhiza. Compounds contained in these TMs have shown activities of relevance to psoriasis in experimental models. To further investigate the likely mechanisms of action of the multiple compounds in these TMs, we undertook a computer-based in silico investigation of the proteins known to be regulated by these compounds and their associated biological pathways. The proteins reportedly regulated by compounds in these four TMs were identified using the HIT (Herbal Ingredients' Targets) database. The resultant data were entered into the PANTHER (Protein ANnotation THrough Evolutionary Relationship) database to identify the pathways in which the proteins could be involved. The study identified 237 compounds in the TMs and these retrieved 287 proteins from HIT. These proteins identified 59 pathways in PANTHER with most proteins being located in the Apoptosis, Angiogenesis, Inflammation mediated by chemokine and cytokine, Gonadotropin releasing hormone receptor, and/or Interleukin signaling pathways. All four TMs contained compounds that had regulating effects on Apoptosis regulator BAX, Apoptosis regulator Bcl-2, Caspase-3, Tumor necrosis factor (TNF) or Prostaglandin G/H synthase 2 (COX2). The main proteins and pathways are primarily related to inflammation, proliferation and angiogenesis which are all processes involved in psoriasis. Experimental studies have reported that certain compounds from these TMs can regulate the expression of proteins involved in each of these pathways.
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Affiliation(s)
- Brian H May
- School of Health Sciences, and Traditional and Complementary Medicine Research Program, Health Innovations Research Institute, RMIT University, Bundoora, VIC, 3083, Australia
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12
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Gabr SA, Berika MY, Alghadir AH. Apoptosis and clinical severity in patients with psoriasis and HCV infection. Indian J Dermatol 2014; 59:230-6. [PMID: 24891650 PMCID: PMC4037940 DOI: 10.4103/0019-5154.131377] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND It has been proposed that hepatitis C virus (HCV) antigens are involved in the pathogenesis of psoriasis and may contribute to severity of the disease. Increased expression of the apoptosis-regulating proteins p53 and tTG and decreased levels of bcl-2 in the keratinocytes of the skin of psoriatic patients have been reported. AIM This study aims to identify the serum levels of apoptosis-regulating proteins in patients with psoriasis and without HCV infection and to study the relation between clinical severity of psoriasis and the presence of HCV infection. MATERIALS AND METHODS Disease severity was assessed by psoriasis area severity index score (PASI) of 90 patients with psoriasis grouped as mild (n = 30), moderate (n = 30) and severe (n = 30); 20 healthy individuals were used as controls. All groups were subjected for complete history taking, clinical examination, and tests for liver function and HCV infection. The serum levels of apoptosis related proteins: p53, tTG and bcl-2 were estimated by enzyme linked immune sorbent assay (ELISA). RESULTS There was a statistically significant (P < 0.001) correlation between clinical severity of psoriasis and presence of HCV antibodies and HCV-mRNA. In addition, significantly (P < 0.001) raised serum p53 and tTG, and reduced bcl-2 were observed among HCV-positive patients as compared to HCV-negative patients and control patients. CONCLUSION These results conclude that clinical severity of psoriasis is affected by the presence of HCV antibodies and overexpression of apoptotic related proteins. In addition, altered serum levels of apoptosis-regulating proteins could be useful prognostic markers and therapeutic targets of psoriatic disease.
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Affiliation(s)
- Sami A Gabr
- Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt ; Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyad, Saudi Arabia
| | - Mohamed Y Berika
- Department of Anatomy, Faculty of Medicine, Mansoura University, Mansoura, Egypt ; Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyad, Saudi Arabia ; Rehabilitation Science Department, College of Applied Medical Sciences, King Saud University, Riyad, Saudi Arabia ; Medical Experimental Research Center, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Ahmad H Alghadir
- Rehabilitation Research Chair, College of Applied Medical Sciences, King Saud University, Riyad, Saudi Arabia ; Rehabilitation Science Department, College of Applied Medical Sciences, King Saud University, Riyad, Saudi Arabia
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13
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Deng S, May BH, Zhang AL, Lu C, Xue CCL. Phytotherapy in the management of psoriasis: a review of the efficacy and safety of oral interventions and the pharmacological actions of the main plants. Arch Dermatol Res 2013; 306:211-29. [DOI: 10.1007/s00403-013-1428-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 10/14/2013] [Accepted: 10/31/2013] [Indexed: 01/11/2023]
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14
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El-Domyati M, Moftah NH, Nasif GA, Abdel-Wahab HM, Barakat MT, Abdel-Aziz RT. Evaluation of apoptosis regulatory proteins in response to PUVA therapy for psoriasis. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2013; 29:18-26. [DOI: 10.1111/phpp.12012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/26/2012] [Indexed: 11/30/2022]
Affiliation(s)
- Moetaz El-Domyati
- Department of Dermatology, STD's and Andrology; Al-Minya University; Al-Minya; Egypt
| | - Noha H. Moftah
- Department of Dermatology, STD's and Andrology; Al-Minya University; Al-Minya; Egypt
| | - Ghada A. Nasif
- Department of Dermatology, STD's and Andrology; Al-Minya University; Al-Minya; Egypt
| | - Hossam M. Abdel-Wahab
- Department of Dermatology, STD's and Andrology; Al-Minya University; Al-Minya; Egypt
| | - Manal T. Barakat
- Department of Dermatology, STD's and Andrology; Al-Minya University; Al-Minya; Egypt
| | - Rasha T. Abdel-Aziz
- Department of Dermatology, STD's and Andrology; Al-Minya University; Al-Minya; Egypt
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15
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Immunohistochemical evaluation of VEGF, survivin, bcl-2 protein and iNOS in the pathogenesis of psoriasis. ACTA ACUST UNITED AC 2012. [DOI: 10.1097/01.xej.0000417556.36570.93] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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16
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Litvinov IV, Bizet AA, Binamer Y, Jones DA, Sasseville D, Philip A. CD109 release from the cell surface in human keratinocytes regulates TGF-β receptor expression, TGF-β signalling and STAT3 activation: relevance to psoriasis. Exp Dermatol 2011; 20:627-32. [PMID: 21539622 DOI: 10.1111/j.1600-0625.2011.01288.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Transforming growth factor (TGF)-β is an important cytokine that negatively regulates keratinocyte proliferation. Deregulation of TGF-β signalling has been reported in psoriasis, where despite increased expression of TGF-β, psoriatic keratinocytes continue to hyperproliferate. Recently, we have identified CD109, a glycosyl phosphatidylinositol (GPI)-anchored protein, as a novel co-receptor and negative regulator of TGF-β signalling. In the current work, we demonstrate that release of CD109 from the cell surface or the addition of CD109 protein results in downregulation of TGF-β signalling and TGF-β receptor expression in human keratinocytes. Moreover, these effects are associated with an increase in phospho-STAT3 levels, enhanced total STAT3 and Bcl-2 expression and an increase in cell growth and survival, suggesting that released/soluble CD109 is able to induce molecular changes that are known to occur in psoriasis. Analysis of CD109 expression in psoriasis patients reveals that CD109 protein expression is markedly decreased in psoriatic epidermis as compared to adjacent uninvolved skin. In contrast, CD109 mRNA expression is unchanged in psoriatic plaques in comparison with normal skin. This raises a possibility that CD109 protein release is enhanced in psoriatic keratinocytes. Furthermore, psoriatic epidermis displays decreased expression of TGF-β receptors, consistent with the results obtained in vitro in keratinocytes with CD109 release or addition of CD109 recombinant protein. Together our findings suggest that aberrant CD109 release from the cell surface in human keratinocytes may induce molecular changes that are usually observed in psoriasis and may explain TGF-β receptor downregulation and decrease in TGF-β signalling in psoriasis.
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Affiliation(s)
- Ivan V Litvinov
- Department of Plastic Surgery, McGill University Health Centre, Montreal, QC, Canada
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17
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Tiberio R, Bozzo C, Pertusi G, Graziola F, Gattoni M, Griffanti P, Boggio P, Colombo E, Leigheb G. Calcipotriol induces apoptosis in psoriatic keratinocytes. Clin Exp Dermatol 2009; 34:e972-4. [DOI: 10.1111/j.1365-2230.2009.03518.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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18
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Zuliani T, Obriot H, Tual M, Lachman-Weber N, Dumas M, Formstecher P, Polakowska R, Ratinaud MH. Variable Bax antigenicity is linked to keratinocyte position within epidermal strata and UV-induced apoptosis. Exp Dermatol 2007; 17:125-32. [PMID: 18177350 DOI: 10.1111/j.1600-0625.2007.00660.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Pro- and anti-apoptotic members of the Bcl-2 family are fundamental in the control of apoptosis. Among them, Bax plays a key role in apoptosis induction by mediating the release of apoptogenic factors from mitochondria to the cytosol. In this report, we investigated, by immunohistofluorescence, the in vivo distribution of Bax in normal human epidermis before and 24 h after exposure to solar-simulated radiation. Bax expression was evaluated with three different, Western blot pretested, anti-Bax antibodies (Ab) and correlated with markers of keratinocyte differentiation and apoptosis using anti-beta(1) integrin and anti-active caspase-3 Abs respectively. Using anti-Bax N20 and A-3533 polyclonal Ab, we found that, whereas undifferentiated keratinocytes of the basal proliferative compartment contained Bax in the cytosol, the differentiated suprabasal cells had Bax mainly in the nucleus. This immunoreactivity pattern was not modified by skin irradiation. Interestingly, the well known apoptosis-related Bax redistribution to mitochondria in response to a cell death signal, could be detected only with yet another, the 2D2 monoclonal Ab. This relocalization occurred specifically in apoptotic, active caspase-3 positive cells of irradiated epidermis. Our data highlight the differentiation- and apoptosis-associated changes in the pattern of Bax subcellular and cellular distribution as uncovered by different anti-Bax Abs and suggest that Bax undergoes successive activation that progresses in parallel with keratinocyte differentiation and apoptosis.
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Affiliation(s)
- Thomas Zuliani
- Homéostasie Cellulaire & Pathologies, Laboratoire de Physiologie Mitochondriale, Faculté de Médecine, Limoges Cedex, France.
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19
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Kim SY, Kim Y, Hwang HY, Kim TY. Altered expression of prohibitin in psoriatic lesions and its cellular implication. Biochem Biophys Res Commun 2007; 360:653-8. [PMID: 17618601 DOI: 10.1016/j.bbrc.2007.06.118] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2007] [Accepted: 06/20/2007] [Indexed: 10/23/2022]
Abstract
Psoriasis is characterized by excessive proliferation of keratinocytes accompanying acanthosis and incomplete differentiation. Prohibitin was investigated by examining its function of HaCaT as well as psoriasis. Psoriatic involved skin revealed high level of prohibitin in the basal layer. Prohibitin was analyzed by applying RNAi (PHBi) with HaCaT, which demonstrated increased S-phase. PHBi showed enhanced sensitivity to anthralin-mediated cell death due to enhanced loss of mitochondrial membrane potential, suggesting a protective role of prohibitin against apoptosis. Collectively, prohibitin plays a role both in cell cycle regulation and in maintaining mitochondrial integrity, implying its association with pathogenesis of psoriasis.
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Affiliation(s)
- Soon Young Kim
- Department of Dermato-Immunology, College of Medicine, The Catholic University of Korea, 505 Banpo-dong, Seocho-gu, Seoul 130-701, South Korea
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20
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Doger FK, Dikicioglu E, Ergin F, Unal E, Sendur N, Uslu M. Nature of cell kinetics in psoriatic epidermis. J Cutan Pathol 2007; 34:257-63. [PMID: 17302610 DOI: 10.1111/j.1600-0560.2006.00719.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Psoriasis vulgaris is a common chronic inflammatory dermatosis. Disorders in keratinocyte proliferation, differentiation, inflammation and immune dysregulation are the major factors implicated in the pathogenesis of psoriasis vulgaris. METHODS The study was performed in skin specimens of 25 patients with psoriasis vulgaris and a control group of 10 individuals without a skin disease. Biopsy specimens from lesional and normal skin were analyzed by immunohistochemical method for expressions of Ki-67, Bcl-2, terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick-end labeling (TUNEL), tumor necrosis factor alpha (TNF-alpha) and nuclear factor kappa B (NF-kappaB). In addition, densities of mast cell infiltration were also investigated. RESULTS Ki-67 and TUNEL indexes and TNF-alpha and NF-kappaB expressions were significantly higher in psoriatic epidermis than in normal epidermis (p < 0.05). There was no significant difference at Bcl-2 reactivity between the normal and the psoriatic epidermis (p > 0.05); however, Bcl-2 staining intensity of lymphocytes was higher in psoriatic lesions than in normal dermis (p < 0.05). Additionally, the number of mast cells was significantly higher in psoriatic dermis than in normal skin (p < 0.05). CONCLUSIONS There were several complex factors involved in the pathogenesis of psoriasis. We conclude that cellular damage and apoptosis temporarily coincide with epidermal proliferation during the course of psoriatic hyperplasia.
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Affiliation(s)
- Furuzan K Doger
- Department of Pathology, School of Medicine, Adnan Menderes University, Aydin, Turkey.
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21
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Tovar-Castillo LE, Cancino-Díaz JC, García-Vázquez F, Cancino-Gómez FG, León-Dorantes G, Blancas-González F, Jiménez-Zamudio L, García-Latorre E, Cancino-Díaz ME. Under-expression of VHL and over-expression of HDAC-1, HIF-1?, LL-37, and IAP-2 in affected skin biopsies of patients with psoriasis. Int J Dermatol 2007; 46:239-46. [PMID: 17343577 DOI: 10.1111/j.1365-4632.2006.02962.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND A feature of psoriasis is the rapid proliferation of keratinocytes, during which apoptosis is blocked and angiogenesis starts. It is known that tumor hypoxic cells produce histone deacetylase-1 (HDAC-1), which up-regulates hypoxia-inducible factor-1alpha (HIF-1alpha) and down-regulates von Hippel-Lindau (VHL) protein by up-regulating vascular endothelial growth factor (VEGF) expression. It has been reported recently that the porcine peptide PR39 (homologous to human LL-37) has angiogenic and antiapoptotic activity. Thus, LL-37, induced by insulin-like growth factor-1 (IGF-1), could help in the production of VEGF. PR39 also induces the expression of inhibitor of apoptosis protein-2 (IAP-2), which blocks apoptosis. The purpose of this work was to analyze whether these genes and their proteins are expressed in psoriatic biopsies. METHODS Using semiquantitative reverse transcriptase-polymerase chain reaction (RT-PCR) messenger RNA (mRNA) expression and immunohistochemical staining, we studied VHL, IAP-2, and related genes in skin biopsies from psoriatic patients and healthy subjects. RESULTS An over-expression of the mRNA for HDAC-1, HIF-1alpha, LL-37, and IGF-1 in psoriatic skin, in comparison with skin from healthy subjects, was found. The antiangiogenic VHL mRNA and protein were under-expressed in psoriatic skin and highly expressed in healthy skin. The antiapoptotic IAP-2 was over-expressed in dermal endothelial cells from psoriatic skin. The pro-apoptotic Bax, Fas, and FasL mRNAs were expressed. CONCLUSIONS These findings suggest that there could be an association of HDAC-1, HIF-1alpha, LL-37, VHL, and IAP-2 with angiogenic and apoptotic mechanisms in psoriasis.
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Affiliation(s)
- Laura E Tovar-Castillo
- Departamentos de Inmunologia and Microbiologia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Servicio de Dermatología, Hospital General de México, Mexico
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22
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Gündüz K, Demireli P, Vatansever S, Inanir I. Examination of bcl-2 and p53 expressions and apoptotic index by TUNEL method in psoriasis. J Cutan Pathol 2007; 33:788-92. [PMID: 17177938 DOI: 10.1111/j.1600-0560.2006.00564.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Psoriasis is characterised by hyperproliferation and by aberrant differentiation. Blockage of the normal apoptotic process is one of the factors implicated in the pathogenesis. OBJECTIVE To determine the apoptotic features by using TUNEL method and also bcl-2 and p53 expressions in psoriatic epidermis. MATERIALS AND METHODS Biopsies of 35 patients with psoriasis vulgaris and 14 normal skin were evaluated. Apoptotic cells were detected using the dUTP nick-end labelling assay; bc1-2 and p53 expressions were assessed by using immunohistochemical techniques. A semi-quantitative grading system (HSCORE) was used for comparison. RESULTS Bcl-2 was strongly expressed in basal keratinocytes of normal skin, while no expression was observed in 13 (37.2%) of the psoriatic samples and it was weakly expressed in the spinous cell layer of 22 (62.8%) samples. Moderate p53 expression was observed in the psoriasis group, while it was weak in the control. The percentage of TUNEL positive cells were significantly increased in the psoriasis group (65+/-2.30) when compared with the control (32.84+/-7.16). CONCLUSION Apoptotic index besides bc1-2 and p53 expressions in psoriasis differ from normal epidermis. Down-regulation of bc1-2 is consistent with the dynamics of psoriasis but increased TUNEL positive cells and p53 expression has not been fully elucidated yet. Gündüz K, Demireli P, Vatansever S, Inanir I. Examination of bcl-2 and p53 expressions and apoptotic index by TUNEL method in psoriasis.
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Affiliation(s)
- Kamer Gündüz
- School of Medicine, Celal Bayar University, Turkey.
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23
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Oztaş P, Lortlar N, Oztaş MO, Omeroglu S, Gürer MA, Alli N. Caspase 9 is decreased in psoriatic epidermis. Acta Histochem 2006; 108:497-9. [PMID: 17034836 DOI: 10.1016/j.acthis.2006.09.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2006] [Revised: 08/08/2006] [Accepted: 09/01/2006] [Indexed: 01/19/2023]
Abstract
Psoriasis is a proliferative and inflammatory disease of the skin. Caspase 9 is responsible for initiating the caspase activation cascade during apoptosis. Apoptosis is a physiological mechanism of homeostasis and development, and caspases are the executioners of apoptosis. This study reports the immunohistochemical localisation of caspase 9 in psoriatic skin and compares it with that seen in normal, healthy control skin. Skin biopsy specimens of lesions were obtained from 15 patients with plaque type psoriasis vulgaris. The specimens were labelled immunohistochemically for binding of an anti-caspase 9 primary antibody. Biopsies of healthy skin from 10 age-matched and sex-matched healthy control individuals were also analysed. The caspase 9 positive cell fraction was calculated for both epidermal and dermal cells in psoriatic lesions and healthy control skin. Counts of caspase 9 positive cells from the epidermis of psoriatic skin lesions were significantly lower than those seen in healthy skin (p<0.05). The caspase 9 immunolabelled perivascular cell counts in the dermis were not statistically significantly different in psoriatic lesions versus normal skin (p>0.05). Psoriatic epidermis contains little of the apoptotic marker, caspase 9. The results of this study are indicative of decreased apoptosis in psoriatic epidermis, and no change in the perivascular area in psoriatic lesions. These findings support the idea that decreased apoptosis is seen in psoriatic epidermal cells. Greater understanding of the nature of the disease may open new avenues for further therapeutic modalities.
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Affiliation(s)
- Pinar Oztaş
- 1st Dermatology Department, Ankara Numune Education and Research Hospital, 44 Cadde 27/9 Cukurambar, 06520 Ankara, Turkey.
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24
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Adişen E, Gülekon A, Erdem O, Dursun A, Gürer MA. The effects of calcipotriol and methylprednisolone aseponate on bcl-2, p53 and ki-67 expression in psoriasis. J Eur Acad Dermatol Venereol 2006; 20:527-33. [PMID: 16684279 DOI: 10.1111/j.1468-3083.2006.01508.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE The decrease of physiological apoptosis in the psoriatic lesions is thought to be involved in the pathogenesis of psoriasis, and induction of apoptosis was shown to contribute to the regression of psoriatic hyperplasia. In the present study, we compared the effects of calcipotriol and methylprednisolone aseponate (MPA) treatments on bcl-2, p53 and ki-67 expressions in psoriatic patients in order to define a relationship between regulation of apoptosis and healing process in psoriasis. METHODS Thirty psoriatic patients with stable and moderate chronic plaque psoriasis applied either calcipotriol or MPA ointment for 6 weeks twice daily. Evaluation of bcl-2, p53 and ki-67 positivity was performed at baseline and was repeated at sixth week for each therapy. RESULTS The mean percentage of positive keratinocytes was 8.63 +/- 7.15% for p53, 20.66 +/- 14.45% for ki-67, and 3.74 +/- 2.83% for bcl-2 in psoriatic skin at baseline. Normal skin values were 3.27 +/- 3.21% for p53, 4.93 +/- 4.77% for ki-67, and 1.80 +/- 0.41% for bcl-2. The psoriatic skin showed higher ki-67 (P < 0.05) and bcl-2 (P < 0.05) expression rates when compared to normal skin. The p53 positivity observed in psoriatic skin and normal skin was not significantly different (P > 0.05). Following calcipotriol and MPA treatments, there was a significant reduction in p53 and ki-67 positivity accompanied by an increase in bcl-2 positivity (P < 0.05 each). No significant differences were found at sixth week between calcipotriol and MPA groups with respect to p53, ki-67 and bcl-2 positivity (P > 0.05). The post-treatment psoriatic skin showed lower expression of p53, higher expressions of ki-67 and bcl-2 when compared to normal skin (P < 0.05 each). CONCLUSION The results of this study provide evidence that both calcipotriol and MPA decrease the p53 and ki-67 expression and increase bcl-2 expression. However, it should further be elucidated if these changes were the common behaviour of psoriatic keratinocytes to any antipsoriatic medication.
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Affiliation(s)
- E Adişen
- Department of Dermatology, Gazi University Faculty of Medicine, Ankara, Turkey
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25
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Batinac T, Zamolo G, Coklo M, Hadzisejdic I, Stemberger C, Zauhar G. Expression of cell cycle and apoptosis regulatory proteins in keratoacanthoma and squamous cell carcinoma. Pathol Res Pract 2006; 202:599-607. [PMID: 16781827 DOI: 10.1016/j.prp.2006.04.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Accepted: 04/11/2006] [Indexed: 11/20/2022]
Abstract
Some authors view keratoacanthoma (KA) as a variant of squamous cell carcinoma (SCC), while others consider it a separate entity that must be distinguished from SCC. Involution displayed by KA is an important difference between these two entities. It has been suggested that apoptosis plays a role in the involution process of KA, although the exact trigger for it remains unclear. A hundred and fifty specimens were included in this study, 30 cases for each of the following groups: normal skin (NS), proliferative keratoacanthoma (pKA), regressing keratoacanthoma (rKA), well-differentiated squamous cell carcinoma (wdSCC), and poorly differentiated squamous cell carcinoma (pdSCC). They were immunohistochemically examined for the expression of p53, Ki-67, bak, and bcl-2. Significantly higher p53 and Ki-67 expressions were observed in all tumor lesions examined as compared with NS. There was higher bak expression in KAs compared to NS and a significant reduction of bak expression in pdSCC together with a significant reduction of bak expression in SCCs compared to pKA. Bcl-2 expression was similar in NS and SCCs, but was lower in rKA. We found a significant positive correlation between p53 and Ki-67, p53 and Bak in NS and examined skin tumors. Lower bcl-2 expression in conjunction with higher bak expression in rKA suggests a possible role of these apoptosis-regulating proteins in tumor regression. In contrast to this finding, a steady level of bcl-2 expression in pdSCC combined with lower bak expression levels and a high proliferation rate could contribute to progression and aggressiveness in these tumors. Bak and p53 expression is a sun-related and age-dependent process in NS and skin tumors.
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Affiliation(s)
- Tanja Batinac
- Department of Dermatovenerology, Rijeka University Hospital, Rijeka, Croatia
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26
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Dodou K, Anderson RJ, Small DAP, Groundwater PW. Investigations on gossypol: past and present developments. Expert Opin Investig Drugs 2005; 14:1419-34. [PMID: 16255680 DOI: 10.1517/13543784.14.11.1419] [Citation(s) in RCA: 108] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Gossypol has received significant attention as a result of its potential therapeutic application as a male antifertility agent. Furthermore, recent research examining the biological activity of gossypol has revealed a number of other promising lines of enquiry. These have focused on the antitumour, antiviral and antioxidant actions of the compound in various disease states. This article provides an overview of the studies on the biological activity of gossypol, with particular attention paid to the mechanisms of its activity and its prospect as a medicinal product.
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Affiliation(s)
- Kalliopi Dodou
- Sunderland Pharmacy School, University of Sunderland, Sunderland SR1 3SD, UK.
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27
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Schön M, Kähne T, Gollnick H, Schön MP. Expression of gp130 in Tumors and Inflammatory Disorders of the Skin: Formal Proof of its Identity as CD146 (MUC18, Mel-CAM). J Invest Dermatol 2005; 125:353-63. [PMID: 16098047 DOI: 10.1111/j.0022-202x.2005.23808.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two antibodies, BT14 and L101, detect a tumor-associated cell surface glycoprotein (gp130) whose properties in normal and diseased skin were assessed, and whose molecular identity was determined in this study. In normal skin, gp130 was constitutively expressed on dermal blood vessels and epidermal appendages, but not in interfollicular epidermis. Marked induction was detected within benign and malignant tumors of various origins including viral warts, basal cell carcinomas, squamous cell carcinomas, metastatic melanomas, and cutaneous T cell lymphomas. In vitro studies confirmed the general upregulation of gp130 expression in malignantly transformed cells. Surprisingly, gp130 was also induced in inflammatory skin diseases including psoriasis and allergic contact dermatitis. Halting proliferation of transformed keratinocytes through cytostatic drugs or increasing the Ca2+ concentration in the medium resulted in increased gp130 expression. In addition, overexpression of Bcl-2 led to upregulation of gp130. When the protein was purified and analyzed by peptide mass fingerprinting, we could demonstrate that it is MUC18 (Mel-CAM, CD146). Sequential immunoprecipitations and western blot analyses confirmed the identity of the antigen. Thus, both expression pattern and regulation characteristics of the now-known glycoprotein gp130 extended beyond previously published data regarding MUC18, thus shedding some new light on a supposedly well-known antigen.
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Affiliation(s)
- Margarete Schön
- Rudolf Virchow Center, DFG Research Center for Experimental Biomedicine and Department of Dermatology, Julius Maximilians University, Würzburg, Germany
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28
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Elias AN. Anti-thyroid thioureylenes in the treatment of psoriasis. Med Hypotheses 2004; 62:431-7. [PMID: 14975517 DOI: 10.1016/j.mehy.2003.12.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2003] [Accepted: 12/03/2003] [Indexed: 01/10/2023]
Abstract
Psoriasis is a common skin disorder associated with significant morbidity. Many agents are used in the medical management of this debilitating condition with the newer anti-cytokine agents being the most recent addition to the pharmacological armamentarium to battle the disorder. Cost concerns are very important with the newer "biologic" treatments costing in excess of 10,000 US dollars annually. The need for cheaper, orally administered agents is therefore imperative. This paper addresses the potential role of anti-thyroid thioureylenes, propylthiouracil and methimazole, in the treatment of psoriasis and reviews the possible mechanism of action of these drugs in this disorder. It is hypothesized that the beneficial effect of anti-thyroid thioureylenes in psoriasis is linked to their effect as anti-proliferative agents as reflected by significant decrease in markers of cellular proliferation such as proliferative cell nuclear antigen in biopsy specimens after treatment with these drugs. Propylthiouracil has been shown to bind to the hepatic T 3 receptor and it is possible that propylthiouracil (6-n-propyl-2-thiouracil) binding to the ligand-binding site normally occupied by T 3 impairs transcription by inactivating the effect of T 3 as well as by squelching retinoic X receptor heterodimer formation with other receptors of the steroid receptor superfamily such as the peroxisome proliferator-activated receptor, retinoic acid receptor and vitamin D receptors.
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Affiliation(s)
- Alan N Elias
- Division of Endocrinology, Department of Medicine, Diabetes & Metabolism, University of California, Irvine UCI Medical Center, 101 City Drive South, Bldg. 53, Rm. 218C, Orange, CA 92868, USA.
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