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Wu X, Song J, Zhang Y, Kuai L, Liu C, Ma X, Li B, Zhang Z, Luo Y. Exploring the role of autophagy in psoriasis pathogenesis: Insights into sustained inflammation and dysfunctional keratinocyte differentiation. Int Immunopharmacol 2024; 135:112244. [PMID: 38776847 DOI: 10.1016/j.intimp.2024.112244] [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: 01/26/2024] [Revised: 04/08/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024]
Abstract
Psoriasis is a common and prevalent chronic papulosquamous cutaneous disorder characterized by sustained inflammation, uncontrolled keratinocyte proliferation, dysfunctional differentiation, and angiogenesis. Autophagy, an intracellular catabolic process, can be induced in response to nutrient stress. It entails the degradation of cellular constituents through the lysosomal machinery, and its association with psoriasis has been well-documented. Nevertheless, there remains a notable dearth of research concerning the involvement of autophagy in the pathogenesis of psoriasis within human skin. This review provides a comprehensive overview of autophagy in psoriasis pathogenesis, focusing on its involvement in two key pathological manifestations: sustained inflammation and uncontrolled keratinocyte proliferation and differentiation. Additionally, it discusses potential avenues for disease management.
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Affiliation(s)
- Xinxin Wu
- Shanghai Skin Disease Hospital, Institute of Dermatology, School of Medicine, Tongji University, Shanghai 200443, China
| | - Jiankun Song
- Shanghai Skin Disease Hospital, Institute of Dermatology, School of Medicine, Tongji University, Shanghai 200443, China
| | - Ying Zhang
- Shanghai Skin Disease Hospital, Institute of Dermatology, School of Medicine, Tongji University, Shanghai 200443, China
| | - Le Kuai
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai 201203, China
| | - Changya Liu
- Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai 200030, China
| | - Xin Ma
- Shanghai Skin Disease Hospital, Institute of Dermatology, School of Medicine, Tongji University, Shanghai 200443, China; Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Bin Li
- Shanghai Skin Disease Hospital, Institute of Dermatology, School of Medicine, Tongji University, Shanghai 200443, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhan Zhang
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Ying Luo
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai 201203, China.
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Hong X, Cai L, Li L, Zheng D, Lin J, Liang Z, Fu W, Liang D, Zeng T, Sun K, Wang W, Chen S, Ren M, Yan L. Keratinocyte-derived small extracellular vesicles delay diabetic wound healing by triggering fibroblasts autophagy. Arch Physiol Biochem 2024:1-13. [PMID: 38828847 DOI: 10.1080/13813455.2024.2358020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 05/16/2024] [Indexed: 06/05/2024]
Abstract
Keratinocyte and fibroblast dysfunctions contribute to delayed healing of diabetic wounds. Small extracellular vesicles (sEV) are key mediators of intercellular communication and are involved in the pathogenesis of several diseases. Recent findings suggest that sEV derived from high-glucose-treated keratinocyte (HaCaT-HG-sEV) can transport LINC01435 to inhibit tube formation and migration of HUVECs, thereby delaying wound healing. This study aimed to elucidate sEV-related communication mechanisms between keratinocytes and fibroblasts during diabetic wound healing. HaCaT-HG-sEV treatment and LINC01435 overexpression significantly decreased fibroblast collagen level and migration ability but significantly increased fibroblast autophagy. However, treatment with an autophagy inhibitor suppressed LINC01435 overexpression-induced decrease in collagen levels in fibroblasts. In diabetic mice, HaCaT-HG-sEV treatment decreased collagen levels and increased the expression of the autophagy-related proteins Beclin-1 and LC3 at the wound site, thereby delaying wound healing. Conclusively, LINC01435 in keratinocyte-derived sEV activates fibroblast autophagy and reduces fibroblast collagen synthesis, leading to impaired diabetic wound healing.
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Affiliation(s)
- Xiaosi Hong
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Leiqin Cai
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lanlan Li
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Dinghao Zheng
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jianghong Lin
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Zhuoxian Liang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wan Fu
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Diefei Liang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Tingting Zeng
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Kan Sun
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wei Wang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Department of Endocrinology, Shenshan Medical center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China
- Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Sifan Chen
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
- Nanhai Translational Innovation Center of Precision Immunology, Sun Yat-Sen Memorial Hospital, Foshan, China
| | - Meng Ren
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Li Yan
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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Lin Y, Wu X, Yang Y, Wu Y, Xiang L, Zhang C. The multifaceted role of autophagy in skin autoimmune disorders: a guardian or culprit? Front Immunol 2024; 15:1343987. [PMID: 38690268 PMCID: PMC11058840 DOI: 10.3389/fimmu.2024.1343987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 04/01/2024] [Indexed: 05/02/2024] Open
Abstract
Autophagy is a cellular process that functions to maintain intracellular homeostasis via the degradation and recycling of defective organelles or damaged proteins. This dynamic mechanism participates in various biological processes, such as the regulation of cellular differentiation, proliferation, survival, and the modulation of inflammation and immune responses. Recent evidence has demonstrated the involvement of polymorphisms in autophagy-related genes in various skin autoimmune diseases. In addition, autophagy, along with autophagy-related proteins, also contributes to homeostasis maintenance and immune regulation in the skin, which is associated with skin autoimmune disorders. This review aims to provide an overview of the multifaceted role of autophagy in skin autoimmune diseases and shed light on the potential of autophagy-targeting therapeutic strategies in dermatology.
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Affiliation(s)
| | | | | | | | | | - Chengfeng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
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Liu S, Liu F, Zhang Z, Zhuang Z, Chen Y. PTPN2 inhibits the proliferation of psoriatic keratinocytes by dephosphorylation of STAT3. Cell Biochem Funct 2024; 42:e3947. [PMID: 38379221 DOI: 10.1002/cbf.3947] [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: 08/21/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/22/2024]
Abstract
Psoriasis is a recurrent and protracted disease that severely impacts the patient's physical and mental health. Thus, there is an urgent need to explore its pathogenesis to identify therapeutic targets. The expression level of protein tyrosine phosphatase nonreceptor type 2 (PTPN2) was analyzed by immunohistochemistry techniques in psoriatic tissues and imiquimod-induced psoriatic mouse models. PTPN2 and signal transducer and activator of transcription 3 (STAT3) were overexpressed or silenced in human keratinocytes or an interleukin (IL)-6-induced psoriasis HaCaT cell model using overexpression plasmid transfection or small interfering RNA technology in vitro, and the effects of PTPN2 on STAT3, HaCaT cell function, and autophagy levels were investigated using reverse transcription-quantitative polymerase chain reaction, Western blot, Cell Counting Kit 8, 5-ethynyl-20-deoxyuridine, flow cytometry, and transmission electron microscopy. PTPN2 expression was found to be significantly downregulated in psoriatic tissues. Then, the in vitro antipsoriatic properties of PTPN2 were investigated in an IL-6-induced psoriasis-like cell model, and the results demonstrated that inhibition of keratinocyte proliferation by PTPN2 may be associated with elevated STAT3 dephosphorylation and autophagy levels. These findings provide novel insights into the mechanisms of autophagy in psoriatic keratinocytes and may be essential for developing new therapeutic strategies to improve inflammatory homeostasis in psoriatic patients.
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Affiliation(s)
- Shougang Liu
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Fanghua Liu
- Department of Dermatology, Guangdong Medical University, Zhanjiang, Guangdong, People's Republic of China
- Department of Dermatology, Ganzhou Municipal Hospital, Ganzhou, Jiangxi, People's Republic of China
| | - Zeqiao Zhang
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China
| | - Zhe Zhuang
- Department of Dermatology, Guangdong Medical University, Zhanjiang, Guangdong, People's Republic of China
| | - Yongfeng Chen
- Department of Dermatology, Dermatology Hospital of Southern Medical University, Guangzhou, Guangdong, People's Republic of China
- Department of Dermatology, Guangdong Medical University, Zhanjiang, Guangdong, People's Republic of China
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Wang M, Zheng H, Chen J, Tang Y, Feng M, Li L. ZnO nanoparticles impair autophagic flux and cell viability through the TRIM16-NRF2-p62 pathway in inflammatory keratinocytes. Food Chem Toxicol 2023; 182:114177. [PMID: 37977258 DOI: 10.1016/j.fct.2023.114177] [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: 08/21/2023] [Revised: 10/08/2023] [Accepted: 11/02/2023] [Indexed: 11/19/2023]
Abstract
PURPOSE Zinc oxide nanoparticles (ZnO NPs) are widely used in sunscreen, cosmetics, and topical drugs. Most previous studies have confirmed the safety of ZnO NPs applied to normal skin; however, little is known about the safety and potential toxicity of ZnO NPs applied to inflamed skin. This study aimed to evaluate the exposure risk of ZnO NPs in the treatment of inflammatory skin diseases. METHODS Normal human and tumor necrosis factor-α (TNF-α)-induced inflammatory keratinocytes were incubated with ZnO NPs to assess their toxic effects on cell viability and autophagy signaling pathway. Tandem mass tag (TMT)-based proteomics analysis was used to identify differentially expressed proteins following incubation of inflammatory keratinocytes with ZnO NPs. Protein expression was assessed by Western blot, and double fluorescent labeling and siRNA-knockdown further elucidated the role of the TRIM16-NRF2-p62 pathway in mediating the effects of ZnO NP. RESULTS In TNF-α-induced inflammatory keratinocytes, ZnO NPs activated cytoprotective autophagy and mediated p62-related autophagic flux block, thereby reducing the viability of inflammatory keratinocytes. Additionally, TRIM16-NRF2 was essential in ZnO NP-mediated autophagy flux block and cell viability reduction in inflammatory keratinocytes. Inhibition of the TRIM16-NRF2 pathway reduced p62 levels, alleviated autophagy flux blockade, and slightly restored the viability of inflammatory keratinocytes. CONCLUSION ZnO NPs activated protective cell autophagy. Blockade of autophagy flux mediated by the TRIM16-NRF2-p62 pathway led to decreased cell viability. This study provided a deeper understanding of the toxicity mechanism of ZnO NPs in inflammatory keratinocytes.
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Affiliation(s)
- Menglei Wang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, China
| | - Huanxin Zheng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, China
| | - Jiawen Chen
- Department of Dermatology, Nanfang Hospital, Southern Medical University, China
| | - Yingmei Tang
- Department of Dermatology, Nanfang Hospital, Southern Medical University, China
| | - Meixin Feng
- Department of Dermatology, Nanfang Hospital, Southern Medical University, China
| | - Li Li
- Department of Dermatology, Nanfang Hospital, Southern Medical University, China.
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Xiao T, Yu X, Yang L, Duan X. Palmatine treats urticaria by reducing inflammation and increasing autophagy. Front Immunol 2023; 14:1268467. [PMID: 38035098 PMCID: PMC10682667 DOI: 10.3389/fimmu.2023.1268467] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 10/31/2023] [Indexed: 12/02/2023] Open
Abstract
Introduction Chronic spontaneous urticaria (CSU) is mainly manifested as wheals and erythema on the skin accompanied by itching, which will cause emotional anxiety and seriously affect the quality of life in patients. Palmatine (PAL) is a main chemical component of Yajieshaba, which has been found to effectively alleviate the symptoms of food allergy. However, its role and mechanism in CSU remain unclear. The present study aimed to investigate the protective effect of PAL on CSU rats. Methods We replicated the CSU rat model by intraperitoneal injection of ovalbumin (OVA) in rats on days 0, 2, 4, and 14, with a double dose given on the last challenge. PAL, loratadine and saline were given by gavage from day 5 to day 14. We observed the skin pathologic changes, mast cell degranulation, immune factor levels, inflammatory response and autophagy-related protein expression in CSU rats. Results We found PAL treatment to be effective in alleviating CSU-like skin lesions and reducing itching and mast cell degranulation in rats. Compared with the OVA group, the levels of immune and inflammatory factors were significantly reduced, neutrophil recruitment was alleviated, suggesting a reduced inflammatory response. The autophagy results showed that PAL further increased the expression of LC3, Beclin-1 and p-LKB1, p-AMPK, Atg5, Atg12 and Atg5-Atg12, while P62 and p-p70S6K1 expression decreased. They collectively suggested that autophagic flux was activated after PAL treatment. However, there was an increase in the expression of LC3I, probably due to the fact that PAL induced its accumulation in order to provide substrate for the generation of more LC3II. Discussion Overall, PAL had a protective effect on CSU in normal rats, activated the expression of autophagy and improved the inflammatory response.
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Affiliation(s)
| | | | | | - Xiaohua Duan
- Yunnan Key Laboratory of Dai and Yi Medicines, Yunnan University of Chinese Medicine, Kunming, Yunnan, China
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Çomaklı S, Özdemir S, Küçükler S, Kandemir FM. Beneficial effects of quercetin on vincristine-induced liver injury in rats: Modulating the levels of Nrf2/HO-1, NF-kB/STAT3, and SIRT1/PGC-1α. J Biochem Mol Toxicol 2023; 37:e23326. [PMID: 36808657 DOI: 10.1002/jbt.23326] [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: 08/11/2022] [Revised: 12/05/2022] [Accepted: 02/08/2023] [Indexed: 02/22/2023]
Abstract
Our experimental objective was to investigate the hepatotoxic effect of vincristine (VCR) administration in rats and determined whether combined therapy with Quercetin (Quer) ensured protection. Five groups with seven rats each were used for this purpose, and experimental groups were formulated as follows: Control group; Quer group; VCR group; VCR plus Quer 25 group; VCR plus Quer 50 group. The results showed that VCR significantly increased the activity of alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) enzymes. Besides, VCR caused considerable increases in the malondialdehyde (MDA) contents, along with significant decreases in reduced glutathione levels, superoxide dismutase, catalase, and glutathione peroxidase enzyme activities in the rat livers. Quer treatment in VCR toxicity markedly decreased the activity of ALT, AST, ALP enzymes, and MDA contents and enhanced the activities of antioxidant enzymes. The results also showed that VCR significantly increased the levels of NF-kB, STAT3, and the expression of caspase 3, Bax, and MAP LC3 and decreased the expression of Bcl2 and levels of Nrf2, HO-1, SIRT1, and PGC-1α. Compared to the VCR group, Quer treatment exhibited significantly lower levels of NF-kB, STAT3, and the expression of caspase 3, Bax, and MAP LC3, and higher levels of Nrf2, HO-1, SIRT1, and PGC-1α. In conclusion, our study demonstrated that Quer could alleviate the harmful effects of VCR via activation of NRf2/HO-1 and SIRT1/PGC-1α pathways, and via attenuation of oxidative stress, apoptosis, autophagy, and NF-kB/STAT3 pathways.
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Affiliation(s)
- Selim Çomaklı
- Department of Pathology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Selçuk Özdemir
- Department of Genetics, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Sefa Küçükler
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Fatih M Kandemir
- Department of Biochemistry, Faculty of Medicine, Aksaray University, Aksaray, Turkey
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Klapan K, Simon D, Karaulov A, Gomzikova M, Rizvanov A, Yousefi S, Simon HU. Autophagy and Skin Diseases. Front Pharmacol 2022; 13:844756. [PMID: 35370701 PMCID: PMC8971629 DOI: 10.3389/fphar.2022.844756] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Accepted: 02/22/2022] [Indexed: 12/15/2022] Open
Abstract
Autophagy is a highly conserved lysosomal degradation system that involves the creation of autophagosomes, which eventually fuse with lysosomes and breakdown misfolded proteins and damaged organelles with their enzymes. Autophagy is widely known for its function in cellular homeostasis under physiological and pathological settings. Defects in autophagy have been implicated in the pathophysiology of a variety of human diseases. The new line of evidence suggests that autophagy is inextricably linked to skin disorders. This review summarizes the principles behind autophagy and highlights current findings of autophagy's role in skin disorders and strategies for therapeutic modulation.
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Affiliation(s)
- Kim Klapan
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Dagmar Simon
- Department of Dermatology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Alexander Karaulov
- Department of Clinical Immunology and Allergology, Sechenov University, Moscow, Russia
| | - Marina Gomzikova
- Laboratory of Molecular Immunology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Albert Rizvanov
- Laboratory of Molecular Immunology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Shida Yousefi
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - Hans-Uwe Simon
- Institute of Pharmacology, University of Bern, Bern, Switzerland.,Department of Clinical Immunology and Allergology, Sechenov University, Moscow, Russia.,Laboratory of Molecular Immunology, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia.,Institute of Biochemistry, Brandenburg Medical School, Neuruppin, Germany
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Song J, Jiang J, Kuai L, Luo Y, Xing M, Luo Y, Ru Y, Sun X, Zhang H, Liu T, Li X, Li B. TMT-based proteomics analysis reveals the protective effect of Jueyin granules on imiquimod-induced psoriasis mouse model by causing autophagy. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 96:153846. [PMID: 34785109 DOI: 10.1016/j.phymed.2021.153846] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/21/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Psoriasis is a chronic relapsing inflammatory skin disease that may markedly influence the patients' physical health and mental condition. According to animal models and clinical researches, it has been proved that Jueyin granules (JYG), a Chinese formula comprised of seven kinds of Traditional Chinese Medicine (TCM), is a therapeutic agent for treating psoriasis, while the specific mechanisms of the anti-inflammation effects of JYG have not been fully elucidated. OBJECTIVE To uncover the underlying mechanisms of the action of JYG on psoriasis by proteomics clues. MATERIALS AND METHODS Differentially expressed proteins (DEPs) were explored by tandem mass tag (TMT)-based quantitative proteomics analysis after JYG treatment (administered intragastrically for 12 days). Bioinformatics analysis of DEPs was conducted through hierarchical clustering, volcano plot, gene ontology (GO), and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. Major DEPs were further identified by enzyme-linked immunoassay (ELISA) and real-time quantitative polymerase chain reaction (qRT-PCR). RESULTS Ninety-five DEPs were identified, including 57 up-regulated and 38 down-regulated proteins, between imiquimod (IMQ) and IMQ+JYG groups. GO analysis indicated that DEPs were mainly associated with keratin filament, intermediate filament, extracellular exosome, extracellular space, innate immune response, keratinization, and keratinocyte differentiation. The KEGG pathway analysis manifested that estrogen signaling pathway, cholesterol metabolism, fat digestion, absorption, peroxisome proliferator-activated receptor (PPAR), and interleukin (IL)-17 signaling pathway might be the paramount pathways, through which JYG functioned on psoriasis. Furthermore, we determined that JYG could regulate macrophage and CD4+ T cell phenotypes by inducing autophagy. CONCLUSIONS JYG may induce autophagy by up-regulating ApoA1 and inhibit the infiltration of CD4+ T cells and macrophages, thereby alleviating IMQ-induced psoriatic inflammation.
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Affiliation(s)
- Jiankun Song
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Jingsi Jiang
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Le Kuai
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yue Luo
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China
| | - Meng Xing
- Department of Dermatology, Shaanxi Hospital of Traditional Chinese Medicine, Xi`an, 710003, China
| | - Ying Luo
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Yi Ru
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Xiaoying Sun
- Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Huiping Zhang
- Shanghai Applied Protein Technology Co., Ltd., Shanghai, 200233, China
| | - Taiyi Liu
- Shanghai Applied Protein Technology Co., Ltd., Shanghai, 200233, China
| | - Xin Li
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Bin Li
- Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, 200443, China; Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China; Department of Dermatology, Shaanxi Hospital of Traditional Chinese Medicine, Xi`an, 710003, China.
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Ripszky Totan A, Greabu M, Stanescu-Spinu II, Imre M, Spinu TC, Miricescu D, Ilinca R, Coculescu EC, Badoiu SC, Coculescu BI, Albu C. The Yin and Yang dualistic features of autophagy in thermal burn wound healing. Int J Immunopathol Pharmacol 2022; 36:3946320221125090. [PMID: 36121435 PMCID: PMC9490459 DOI: 10.1177/03946320221125090] [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] [Indexed: 12/09/2022] Open
Abstract
Burn healing should be regarded as a dynamic process consisting of two main, interrelated phases: (a) the inflammatory phase when neutrophils and monocytes infiltrate the injury site, through localized vasodilation and fluid extravasation, and (b) the proliferative-remodeling phase, which represents a key event in wound healing. In the skin, both canonical autophagy (induced by starvation, oxidative stress, and environmental aggressions) and non-canonical or selective autophagy have evolved to play a discrete, but, essential, “housekeeping” role, for homeostasis, immune tolerance, and survival. Experimental data supporting the pro-survival roles of autophagy, highlighting its Yang, luminous and positive feature of this complex but insufficient explored molecular pathway, have been reported. Autophagic cell death describes an “excessive” degradation of important cellular components that are necessary for normal cell function. This deadly molecular mechanism brings to light the darker, concealed, Yin feature of autophagy. Autophagy seems to perform dual, conflicting roles in the angiogenesis context, revealing once again, its Yin–Yang features. Autophagy with its Yin–Yang features remains the shadow player, able to decide quietly whether the cell survives or dies.
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Affiliation(s)
- Alexandra Ripszky Totan
- Department of Biochemistry, 367124Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Maria Greabu
- Department of Biochemistry, 367124Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Iulia-Ioana Stanescu-Spinu
- Department of Biochemistry, 367124Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Marina Imre
- Department of Complete Denture, Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Tudor-Claudiu Spinu
- Department of Fixed Prosthodontics and Occlusology, Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Daniela Miricescu
- Department of Biochemistry, 367124Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Radu Ilinca
- Department of Biophysics, Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Elena Claudia Coculescu
- Department of Oral Pathology, Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Romania
| | - Silviu Constantin Badoiu
- Department of Anatomy and Embryology, Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Bogdan-Ioan Coculescu
- Cantacuzino National Medico-Military Institute for Research and Development, Bucharest, Romania
| | - Crenguta Albu
- Department of Genetics, Carol Davila University of Medicine and Pharmacy, Faculty of Dental Medicine, Bucharest, Romania
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11
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Liang D, Lin WJ, Ren M, Qiu J, Yang C, Wang X, Li N, Zeng T, Sun K, You L, Yan L, Wang W. m 6A reader YTHDC1 modulates autophagy by targeting SQSTM1 in diabetic skin. Autophagy 2021; 18:1318-1337. [PMID: 34657574 PMCID: PMC9225222 DOI: 10.1080/15548627.2021.1974175] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Dysregulation of macroautophagy/autophagy contributes to the delay of wound healing in diabetic skin. N6-methyladenosine (m6A) RNA modification is known to play a critical role in regulating autophagy. In this study, it was found that SQSTM1/p62 (sequestosome 1), an autophagy receptor, was significantly downregulated in two human keratinocyte cells lines with short-term high-glucose treatment, as well as in the epidermis of diabetic patients and a db/db mouse model with long-term hyperglycemia. Knockdown of SQSTM1 led to the impairment of autophagic flux, which was consistent with the results of high-glucose treatment in keratinocytes. Moreover, the m6A reader protein YTHDC1 (YTH domain containing 1), which interacted with SQSTM1 mRNA, was downregulated in keratinocytes under both the acute and chronic effects of hyperglycemia. Knockdown of YTHDC1 affected biological functions of keratinocytes, which included increased apoptosis rates and impaired wound-healing capacity. In addition, knockdown of endogenous YTHDC1 resulted in a blockade of autophagic flux in keratinocytes, while overexpression of YTHDC1 rescued the blockade of autophagic flux induced by high glucose. In vivo, knockdown of endogenous Ythdc1 or Sqstm1 inhibited autophagy in the epidermis and delayed wound healing. Interestingly, we found that a decrease of YTHDC1 drove SQSTM1 mRNA degradation in the nucleus. Furthermore, the results revealed that YTHDC1 interacted and cooperated with ELAVL1/HuR (ELAV like RNA binding protein 1) in modulating the expression of SQSTM1. Collectively, this study uncovered a previously unrecognized function for YTHDC1 in modulating autophagy via regulating the stability of SQSTM1 nuclear mRNA in diabetic keratinocytes. Abbreviations: ACTB: actin beta; AGEs: glycation end products; AL: autolysosome; AP: autophagosome; ATG: autophagy related; AKT: AKT serine/threonine kinase; ANOVA: analysis of variance; BECN1: beclin 1; Co-IP: co-immunoprecipitation; DEGs: differentially expressed genes; DM: diabetes mellitus; ELAVL1: ELAV like RNA binding protein 1; FTO: FTO alpha-ketoglutarate dependent dioxygenase; G: glucose; HaCaT: human keratinocyte; GO: Gene Ontology; GSEA: Gene Set Enrichment Analysis; HE: hematoxylin-eosin; IHC: immunohistochemical; IRS: immunoreactive score; KEAP1: kelch like ECH associated protein 1; KEGG: Kyoto Encyclopedia of Genes and Genomes; m6A: N6-methyladenosine; M: mannitol; MANOVA: multivariate analysis of variance; MAP1LC3: microtubule associated protein 1 light chain 3; MAP1LC3B: microtubule associated protein 1 light chain 3 beta; MeRIP: methylated RNA immunoprecipitation; METTL3: methyltransferase 3, N6-adenosine-methytransferase complex catalytic subunit; MTOR: mechanistic target of rapamycin kinase; MTORC1: mechanistic target of rapamycin complex 1; NBR1: NBR1 autophagy cargo receptor; NFE2L2: nuclear factor, erythroid 2 like 2; NG: normal glucose; NHEK: normal human epithelial keratinocyte; OE: overexpressing; p-: phospho-; PI: propidium iodide; PPIN: Protein-Protein Interaction Network; RBPs: RNA binding proteins; RIP: RNA immunoprecipitation; RNA-seq: RNA-sequence; RNU6–1: RNA, U6 small nuclear 1; ROS: reactive oxygen species; siRNAs: small interfering RNAs; SQSTM1: sequestosome 1; SRSF: serine and arginine rich splicing factor; T2DM: type 2 diabetes mellitus; TEM: transmission electron microscopy; TUBB: tubulin beta class I; WT: wild-type; YTHDC1: YTH domain containing 1.
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Affiliation(s)
- Diefei Liang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei-Jye Lin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Medical Research Center of Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Meng Ren
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Junxiong Qiu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Department of Cardiovascular Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chuan Yang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaoyi Wang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Na Li
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Tingting Zeng
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Kan Sun
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lili You
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Li Yan
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wei Wang
- Department of Endocrinology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Guangdong-Hong Kong Joint Laboratory for RNA Medicine, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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12
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Chen X, Tong G, Fan J, Shen Y, Wang N, Gong W, Hu Z, Zhu K, Li X, Jin L, Cong W, Xiao J, Zhu Z. FGF21 promotes migration and differentiation of epidermal cells during wound healing via SIRT1-dependent autophagy. Br J Pharmacol 2021; 179:1102-1121. [PMID: 34608629 DOI: 10.1111/bph.15701] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND AND PURPOSE Migration and differentiation of epidermal cells are essential for epidermal regeneration during wound healing. Fibroblast growth factor 21 (FGF21) plays key roles in mediating a variety of biological activities. However, its role in skin wound healing remains unknown. EXPERIMENTAL APPROACH Fgf21 knockout (Fgf21 KO) mice were used to determine the effect of FGF21 on wound healing. The source of FGF21 and its target cells were determined by immunohistochemistry, immunoblotting, and ELISA assay. Moreover, Sirt1flox/flox and Atg7flox/flox mice were constructed and injected with the epidermal-specific Cre virus to elucidate the underlying mechanisms. Migration and differentiation of keratinocytes were evaluated in vitro by cell scratch assays, immunofluorescence, and qRT-RCR. The effects were further assessed when SIRT1, ATG7, ATG5, BECN1, and P53 were silenced. Interactions between SIRT1 and autophagy-related genes were assessed using immunoprecipitation assays. KEY RESULTS FGF21 was active in fibroblasts and promoted migration and differentiation of keratinocytes following injury. After wounding, SIRT1 expression and autophagosome synthesis were lower in Fgf21 KO mice. Depletion of ATG7 in keratinocytes counteracted the FGF21-induced increases in migration and differentiation, suggesting that autophagy is required for the FGF21-mediated pro-healing effects. Furthermore, epithelial-specific Sirt1 knockout abolished the FGF21-mediated improvements of autophagy and wound healing. Silencing of SIRT1 in keratinocytes, which decreased deacetylation of p53 and autophagy-related proteins, revealed that FGF21-induced autophagy during wound healing was SIRT1-dependent. CONCLUSIONS AND IMPLICATIONS FGF21 is a key regulator of keratinocyte migration and differentiation during wound healing. FGF21 may be a novel therapeutic target to accelerate would healing.
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Affiliation(s)
- Xixi Chen
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China.,Department of Pharmacy, Taizhou Central Hospital (Taizhou University Hospital), Taizhou, China
| | - Gaozan Tong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Junfu Fan
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Yingjie Shen
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Nan Wang
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Wenjie Gong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Zijing Hu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Kunxuan Zhu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Xiaokun Li
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Litai Jin
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Weitao Cong
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Jian Xiao
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
| | - Zhongxin Zhu
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou, China
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13
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Choi MS, Chae YJ, Choi JW, Chang JE. Potential Therapeutic Approaches through Modulating the Autophagy Process for Skin Barrier Dysfunction. Int J Mol Sci 2021; 22:7869. [PMID: 34360634 PMCID: PMC8345957 DOI: 10.3390/ijms22157869] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 12/17/2022] Open
Abstract
Autophagy is an attractive process to researchers who are seeking novel potential treatments for various diseases. Autophagy plays a critical role in degrading damaged cellular organelles, supporting normal cell development, and maintaining cellular homeostasis. Because of the various effects of autophagy, recent human genome research has focused on evaluating the relationship between autophagy and a wide variety of diseases, such as autoimmune diseases, cancers, and inflammatory diseases. The skin is the largest organ in the body and provides the first line of defense against environmental hazards, including UV damage, chemical toxins, injuries, oxidative stress, and microorganisms. Autophagy takes part in endogenous defense mechanisms by controlling skin homeostasis. In this manner, regulating autophagy might contribute to the treatment of skin barrier dysfunctions. Various studies are ongoing to elucidate the association between autophagy and skin-related diseases in order to find potential therapeutic approaches. However, little evidence has been gathered about the relationship between autophagy and the skin. In this review, we highlight the previous findings of autophagy and skin barrier disorders and suggest potential therapeutic strategies. The recent research regarding autophagy in acne and skin aging is also discussed.
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Affiliation(s)
- Min Sik Choi
- Lab of Pharmacology, College of Pharmacy, Dongduk Women’s University, Seoul 02748, Korea;
| | - Yoon-Jee Chae
- College of Pharmacy, Woosuk University, Wanju-gun 55338, Korea;
| | - Ji Woong Choi
- College of Pharmacy, Gachon University, Incheon 21936, Korea;
| | - Ji-Eun Chang
- Lab of Pharmaceutics, College of Pharmacy, Dongduk Women’s University, Seoul 02748, Korea
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14
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Amer AS, Samaka RM, Moftah NH. Beclin1 in psoriasis: an immunohistochemical study. Clin Exp Dermatol 2021; 46:851-860. [PMID: 33405299 DOI: 10.1111/ced.14554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/22/2020] [Accepted: 01/04/2021] [Indexed: 11/28/2022]
Abstract
BACKGROUND Abnormal autophagy is known to be associated with the pathogenesis of some skin disorders. The protein Beclin1 plays a central role in the machinery of autophagy. AIM To assess the expression of Beclin1 in psoriasis, using immunohistochemical study in lesional and perilesional skin in patients with psoriasis, and to compare the results with those of an apparently healthy control (HC) group. METHODS This case-control study enrolled a total of 40 participants: 20 patients with chronic plaque psoriasis and 20 age- and sex-matched, apparently HCs. Skin biopsies were taken from (i) lesional and (ii) perilesional skin of patients with psoriasis and from (iii) normal skin of HCs for immunohistochemical evaluation of Beclin1 expression. RESULTS Epidermal Beclin1 expression was positive in all three studied groups. There was a significant difference between the three studied groups regarding Beclin1 epidermal topographic distribution, epidermal staining intensity, H score and H-score category (P < 0.01 for all). Significant differences were found between the three studied groups regarding Beclin1 H score and H-score category for skin adnexal structures (P < 0.01 for both). For dermal inflammatory infiltrate, significant differences were found between lesional and perilesional skin regarding Beclin1 expression status, staining intensity, H score and H-score category (P < 0.01, P = 0.01, P < 0.01 and P < 0.03, respectively). CONCLUSION The increased expression of Beclin1 in psoriatic skin, both lesional and perilesional, reflects increased autophagy, which could be a consequence of the rapid keratinocyte proliferation in psoriasis, which would also ramp up all the cellular processes including autophagy. The cellular localization of Beclin1 was nucleocytoplasmic in psoriasis skin but cytoplasmic only in normal HC skin, which needs further study to allow its interpretation.
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Affiliation(s)
- A S Amer
- Dermatology and Venereology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
| | - R M Samaka
- Pathology Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Egypt
| | - N H Moftah
- Dermatology and Venereology Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt
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15
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Targeting TRPV1-mediated autophagy attenuates nitrogen mustard-induced dermal toxicity. Signal Transduct Target Ther 2021; 6:29. [PMID: 33487631 PMCID: PMC7829253 DOI: 10.1038/s41392-020-00389-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 01/30/2023] Open
Abstract
Nitrogen mustard (NM) causes severe vesicating skin injury, which lacks effective targeted therapies. The major limitation is that the specific mechanism of NM-induced skin injury is not well understood. Recently, autophagy has been found to play important roles in physical and chemical exposure-caused cutaneous injuries. However, whether autophagy contributes to NM-induced dermal toxicity is unclear. Herein, we initially confirmed that NM dose-dependently caused cell death and induced autophagy in keratinocytes. Suppression of autophagy by 3-methyladenine, chloroquine, and bafilomycin A1 or ATG5 siRNA attenuated NM-induced keratinocyte cell death. Furthermore, NM increased transient receptor potential vanilloid 1 (TRPV1) expression, intracellular Ca2+ content, and the activities of Ca2+/calmodulin-dependent kinase kinase β (CaMKKβ), AMP-activated protein kinase (AMPK), unc-51-like kinase 1 (ULK1), and mammalian target of rapamycin (mTOR). NM-induced autophagy in keratinocytes was abolished by treatment with inhibitors of TRPV1 (capsazepine), CaMKKβ (STO-609), AMPK (compound C), and ULK1 (SBI-0206965) as well as TRPV1, CaMKKβ, and AMPK siRNA transfection. In addition, an mTOR inhibitor (rapamycin) had no significant effect on NM-stimulated autophagy or cell death of keratinocytes. Finally, the results of the in vivo experiment in NM-treated skin tissues were consistent with the findings of the in vitro experiment. In conclusion, NM-caused dermal toxicity by overactivating autophagy partially through the activation of TRPV1-Ca2+-CaMKKβ-AMPK-ULK1 signaling pathway. These results suggest that blocking TRPV1-dependent autophagy could be a potential treatment strategy for NM-caused cutaneous injury.
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16
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Nada EA, Muhammad EMS, Ahmed SFM, Tamam AMS, Abdelhamed A. Assessment of the Effect of Metabolic Syndrome on the Autophagy Marker LC3 in Psoriasis Vulgaris Patients: A Cross-Sectional Study. Clin Cosmet Investig Dermatol 2020; 13:1005-1013. [PMID: 33376378 PMCID: PMC7764558 DOI: 10.2147/ccid.s284300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 11/17/2020] [Indexed: 12/19/2022]
Abstract
Purpose Psoriasis vulgaris, one of the most prevalent chronic inflammatory skin diseases, is associated with metabolic syndrome (MetS). Autophagy, an intracellular degradation system is essential for cell survival and differentiation, and its dysfunction may contribute to metabolic diseases. A cross-sectional study was conducted on 38 psoriasis vulgaris patients and 16 healthy control subjects to 1) Assess immunohistochemical (IHC) expression of microtubule-associated protein light chain 3 (LC3); 2) Evaluate the relationship between Psoriasis Area Severity Index (PASI) score, and LC3 expression. Patients and Methods PASI score was evaluated for all psoriasis patients. Lipid profile, blood sugar, and CRP were done for all patients and controls. A punch biopsy was taken from lesional and perilesional skin of psoriasis patients and normal skin of the controls. Tissue sections were prepared. IHC LC3 staining was done and evaluated. Results LC3 was nearly absent, in the epidermis of the lesional skin of psoriasis while it was strong among control (p=0.001). LC3 expression in the lesional skin of psoriasis vulgaris was lower than its expression in perilesional (p=0.001). However, LC3 expression was not significantly changed with PASI or the presence/absence of MetS. Conclusion A potential link between psoriasis vulgaris and autophagy as assessed by LC3 could be present. LC3 was down-regulated in psoriasis lesions than in normal skin. However, its expression did not change with PASI or MetS. An autophagy enhancer might be used as a possible therapeutic target in psoriasis vulgaris patients.
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Affiliation(s)
- Essam A Nada
- Dermatology, Venereology and Andrology Department, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Eman M S Muhammad
- Pathology Department, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Sheren F M Ahmed
- Pathology Department, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Asmaa M S Tamam
- Dermatology, Venereology and Andrology Department, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Amr Abdelhamed
- Dermatology, Venereology and Andrology Department, Faculty of Medicine, Sohag University, Sohag, Egypt
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17
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Autophagy-A Hidden but Important Actor on Oral Cancer Scene. Int J Mol Sci 2020; 21:ijms21239325. [PMID: 33297472 PMCID: PMC7729760 DOI: 10.3390/ijms21239325] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/26/2020] [Accepted: 12/03/2020] [Indexed: 12/12/2022] Open
Abstract
The duration of denture use, oral hygiene, smoking and male sex were identified as risk factors for oral mucosal lesions. As it is well known, all the oral mucosal lesions associated with risk factors have an important degree of malignity. Chronic mechanical irritation can be another cause of oral cancer and it is produced by the constant action of a deleterious agent from the oral cavity. Autophagy represents a complex evolutionary conserved catabolic process in which cells self-digest intracellular organelles in order to regulate their normal turnover and remove the damaged ones with compromised function to further maintain homeostasis. Autophagy is modulated by mTOR kinase and indirectly by PI3K/AKT survival pathway. Due to its dual capacity to either induce cell death or promote cell survival, important evidence pointed that autophagy has a two-faced role in response to chemotherapy in cancer. In conclusion, understanding how to overcome cytoprotective autophagy and how to take advantage of autophagic cell death is critical in order to enhance the cancer cells sensitivity to particular therapeutic agents.
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18
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Xu LY, Mu M, Wang ML, Liu JC, Zhou YJ, Wu J, Jiang BY, Chen MG, Hu D, Tao XR. Effects of the linoleic acid/docosahexaenoic acid ratio and concentration inducing autophagy in Raw264.7 cells against Staphylococcus aureus. J Clin Biochem Nutr 2020; 67:146-152. [PMID: 33041511 PMCID: PMC7533852 DOI: 10.3164/jcbn.19-95] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/25/2020] [Indexed: 11/22/2022] Open
Abstract
Our study was to understand the autophagy induce by different ratios and concentrations of LA/DHA on Raw264.7 cell, and then to investigate the effect of Raw264.7 autophagy on the clearance of Staphylococcus aureus. Raw264.7 cells was treated by LA/DHA in different concentrations (50/100 µmol/L) and ratios (4:1, 6:1, 8:1, 1:4, 1:6 and 1:8) for 6/12/24 h, cell viability assay was assessed by Cell Counting Kit-8, LC3B, p62, P-mTOR, P-Akt, P-PI3K and BECN 1 were detected by the Western blot. LA/DHA could induce autophagy of Raw264.7 cells through the PI3K-Akt-mTOR signaling pathway, the strong effect on autophagy by the concentration is 100 µmol/L, the ratio is 6:1 of LA/DHA, and the treatment time is 24 h. Compared with the images in the control group obtained by merging red and green fluorescence channels, the treatment of LA, DHA in a ratio of 6:1 at a concentration of 100 µmol/L for 24 h significantly lead to a substantial number of autophagosomes (yellow) as well as autolysosomes (red), enhancing autophagy flux. Autophagy induce by LA/DHA can devour and damage intracellular and extracellular Staphylococcus aureus. These results indicate that LA/DHA cloud induce autophagy and enhance the phagocytosis and killing ability of macrophages to intracellular parasitic bacteria.
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Affiliation(s)
- Li-Ying Xu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Min Mu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Man-Li Wang
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Jin-Cheng Liu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Yuan-Jie Zhou
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Jing Wu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Bing-You Jiang
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Ming-Gong Chen
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Dong Hu
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
| | - Xing-Rong Tao
- School of Medicine, Department of Medical Frontier Experimental Center, Anhui University of Science and Technology, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China.,Key Laboratory of Industrial Dust Deep Reduction and Occupational Health and Safety of Anhui Higher Education Institutes, 168 Taifeng Road, Huainan City, Anhui Province 232001, China
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19
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Autophagy Suppresses Toll-Like Receptor 3-Mediated Inflammatory Reaction in Human Epidermal Keratinocytes. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4584626. [PMID: 32461989 PMCID: PMC7222544 DOI: 10.1155/2020/4584626] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 03/25/2020] [Accepted: 04/08/2020] [Indexed: 02/08/2023]
Abstract
Autophagy, one mechanism of programmed cell death, is fundamental to cellular homeostasis. Previous studies have identified autophagy as a novel mechanism by which cytokines control the immune response. However, its precise role in immune-related inflammatory skin diseases such as psoriasis remains unclear. Thus, this study explored the functional role of autophagy in psoriatic inflammation of epidermal keratinocytes. Strong light chain 3 immunoreactivity was observed in epidermal keratinocytes of both human psoriatic lesions and imiquimod-induced mice psoriatic model, and it was readily induced by polycytidylic acid (poly (I:C)), which stimulates Toll-like receptor 3 (TLR3), in human epidermal keratinocytes in vitro. Rapamycin-induced activation of autophagy significantly reduced poly (I:C)-induced inflammatory reaction, whereas, inhibition of autophagy by 3-methyladeine increased that. Our results indicate that the induction of autophagy may attenuate TLR3-mediated immune responses in human epidermal keratinocytes, thus providing novel insights into the mechanisms underlying the development of inflammatory skin diseases including psoriasis.
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Yan L, Wang LZ, Xiao R, Cao R, Pan B, Lv XY, Jiao H, Zhuang Q, Sun XJ, Liu YB. Inhibition of microRNA-21-5p reduces keloid fibroblast autophagy and migration by targeting PTEN after electron beam irradiation. J Transl Med 2020; 100:387-399. [PMID: 31558773 DOI: 10.1038/s41374-019-0323-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 08/14/2019] [Accepted: 08/22/2019] [Indexed: 01/17/2023] Open
Abstract
Electron beam (EB) irradiation is useful to reduce the recurrence of keloids; however, the underlying mechanism remains unknown. MicroRNA-21 (miR-21), which regulates autophagy during cancer radiation therapy, was identified as a potential therapeutic target for keloids. Here, we investigate the regulatory mechanism(s) of miR-21-5p on keloid fibroblast autophagy and migration after EB irradiation. The microRNA expression profile of the keloid dermis was examined by performing a microRNA microarray. Levels of LC3B and Beclin-1 were detected by immunohistochemical and western blot analysis in the keloid dermis and fibroblasts. Autophagy and apoptosis were tested in keloid fibroblasts after EB irradiation or transfection with an miR-21-5p inhibitor using electron microscopy, a Cyto-ID Green Autophagy Detection Kit, and an Annexin V PE Apoptosis Detection Kit. Migration was analyzed by an in vitro scratch-wound healing assay. Mechanistic tests were performed using small interfering RNAs to phosphatase and tensin homolog (siPTEN). Levels of miR-21-5p, PTEN, programmed cell death 4 (PDCD4), p-AKT, and apoptosis- and autophagy-associated genes were examined by qRT-PCR and western blotting. LC3B expression and migration ability were enhanced in fibroblasts and the keloid margin dermis compared with those in the adjacent normal skin. Both EB irradiation and an miR-21-5p inhibitor reduced keloid fibroblast autophagy, which was accompanied by decreased expression of miR-21-5p, p-AKT, and LC3B-II and increased expression of PTEN, PDCD4, and apoptosis-related genes. MiR-21-5p downregulation inhibited migration and suppressed LC3B expression and this was reversed by PTEN reduction. In conclusion, with increasing apoptosis, EB irradiation inhibits autophagy in keloid fibroblasts by reducing miR-21-5p, which regulates migration and LC3B expression via PTEN/AKT signaling. These data suggest a potential mechanism wherein miR-21-5p inhibition regulates autophagy and migration in EB-irradiated keloid fibroblasts, effectively preventing local invasion and recurrence. Therefore, miR-21-5p could be a new therapeutic target, to replace EB irradiation, and control keloid relapse.
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Affiliation(s)
- Li Yan
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Lian-Zhao Wang
- Comprehensive Treatment Center of Scar, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Ran Xiao
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Rui Cao
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Bo Pan
- Auricular Plastic and Reconstructive Surgery Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Xiao-Yan Lv
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Hu Jiao
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Qiang Zhuang
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Xue-Jian Sun
- Research Center of Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China
| | - Yuan-Bo Liu
- Department of Plastic and Reconstructive Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Ba-Da-Chu Road 33#, 100144, Beijing, P.R. China.
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21
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Samaka RM, Basha MA, Mansour E. Does the Autophagy Related Gene 7 (ATG7) Have a Role in Non-Melanoma Skin Cancer? Clin Cosmet Investig Dermatol 2020; 13:49-58. [PMID: 32021368 PMCID: PMC6980838 DOI: 10.2147/ccid.s222051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 11/29/2019] [Indexed: 12/14/2022]
Abstract
Purpose To evaluate the role of autophagy related gene 7 (ATG7) in non-melanoma skin cancer. Subjects and Methods This retrospective and prospective case-control study was performed on 104 patients with non-melanoma skin cancer (NMSC) in addition to 20 apparently healthy subjects matched for age and sex as a control group. Multiple skin biopsies were taken for immunohistochemical evaluation of ATG7 expression. Results Both epithelial and stromal ATG7 were expressed in all participants while all patients showed nucleocytoplasmic localization and controls showed both cytoplasmic and nucleocytoplasmic expression. In addition, significantly higher H-scores of ATG7 in both epithelium and stroma were detected in patients compared to controls (P<0.001). Conclusion ATG7 nucleocytoplasmic topographic localization might be involved in the pathogenesis of NMSC, which can open the gate for new target therapy for this skin cancer.
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Affiliation(s)
- Rehab M Samaka
- Pathology Department, Faculty of Medicine, Menoufia University, Al Minufya, Egypt
| | - Mohammed A Basha
- Dermatology, Andrology and STDs Department, Faculty of Medicine, Menoufia University, Al Minufya, Egypt
| | - Eman Mansour
- Ministry of Health, El Menshawy General Hospital, Tanta, Egypt
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22
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Autophagy: Multiple Mechanisms to Protect Skin from Ultraviolet Radiation-Driven Photoaging. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:8135985. [PMID: 31915514 PMCID: PMC6930764 DOI: 10.1155/2019/8135985] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 11/26/2019] [Indexed: 01/07/2023]
Abstract
Autophagy is an essential cellular process that maintains balanced cell life. Restriction in autophagy may induce degenerative changes in humans. Natural or pathological aging of susceptible tissues has been linked with reduced autophagic activity. Skin photoaging is an example of such pathological condition caused by ambient solar UV radiation exposure. The UV-induced production of reaction oxygen species (ROS) has been linked to the promotion and progression of the photoaging process in exposed tissues. Accordingly, it has been suggested that autophagy is capable of delaying the skin photoaging process caused by solar ultraviolet (UV), although the underlying mechanism is still under debate. This review highlights several plausible mechanisms by which UV-induced ROS activates the cellular signaling pathways and modulates the autophagy. More specifically, the UV-mediated regulation of autophagy and age-related transcription factors is discussed to pinpoint the contribution of autophagy to antiphotoaging effects in the skin. The outcome of this review will provide insights into design intervention strategies for delaying the phenomenon of sunlight-induced photodamage, photoaging, and other aging-related chronic diseases based on factors that activate the autophagy process in the skin.
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Yue L, Ailin W, Jinwei Z, Leng L, Jianan W, Li L, Haiming C, Ling H, Chuanjian L. PSORI-CM02 ameliorates psoriasis in vivo and in vitro by inducing autophagy via inhibition of the PI3K/Akt/mTOR pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 64:153054. [PMID: 31401494 DOI: 10.1016/j.phymed.2019.153054] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/20/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Psoriasis is an inflammatory skin disease that affects an estimated 3% of the world's population. PSORI-CM02 is an empirically developed Chinese medicine formula optimised from Yin Xie Ling, summarised by national medical master Guo-Wei Xuan, that has been used for decades to treat psoriasis in the Guangdong Provincial Hospital of Chinese Medicine. However, its anti-psoriatic mechanisms are still poorly understood. In this study, we explored the effects of PSORI-CM02 on autophagy and the underlying mechanisms in TNF-α-stimulated HaCaT cells and in a mouse model of imiquimod-induced psoriasis. METHODS Cell viability was assessed by MTT assay. Apoptosis was detected by annexin V-FITC/PI double-staining and caspase-3 assays. Autophagy was detected by electron microscopy, RT-PCR and western blotting. The PI3K/Akt/mTOR pathway was analysed by western blotting and immunochemical analysis. RESULTS PSORI-CM02 induced autophagy and thus inhibited the proliferation of HaCaT cells via suppression of the PI3K/Akt/mTOR pathway. In mice with IMQ-induced psoriasis, PSORI-CM02 relieved psoriasis symptoms, induced autophagy and inhibited the phosphorylation of the PI3K/AKT/mTOR pathway in the skin. CONCLUSION These results suggest that PSORI-CM02 treats psoriasis by inducing autophagy via inhibition of the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Lu Yue
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China; Dermatology Department, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, Guangdong, China
| | - Wang Ailin
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China; Dermatology Department, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, Guangdong, China
| | - Zhang Jinwei
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China
| | - Li Leng
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China
| | - Wei Jianan
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China
| | - Li Li
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China
| | - Chen Haiming
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China
| | - Han Ling
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou 510120, Guangdong, China.
| | - Lu Chuanjian
- The Second Clinical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Hospital of Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Academy of Chinese Medical Sciences, Guangzhou 510120, Guangdong, China; Dermatology Department, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou 510120, Guangdong, China; Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, Guangzhou 510120, Guangdong, China.
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Lehmann SM, Leube RE, Schwarz N. Keratin 6a mutations lead to impaired mitochondrial quality control. Br J Dermatol 2019; 182:636-647. [PMID: 31004504 DOI: 10.1111/bjd.18014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND Epidermal differentiation is a multilevel process in which keratinocytes need to lose their organelles, including their mitochondria, by autophagy. Disturbed autophagy leads to thickening of the epidermis as seen in pachyonychia congenita (PC), a rare skin disease caused by mutations in keratins 6, 16 and 17. OBJECTIVES To ask if mitophagy, the selective degradation of mitochondria by autophagy, is disturbed in PC and, if so, at which stage. METHODS Immortalized keratinocytes derived from patients with PC were used in fluorescence-based and biochemical assays to dissect the different steps of mitophagy. RESULTS PC keratinocytes accumulated old mitochondria and displayed disturbed clearance of mitochondria after mitochondrial uncoupling. However, early mitophagy steps and autophagosome formation were not affected. We observed that autolysosomes accumulate in PC and are not sufficiently recycled. CONCLUSIONS We propose an influence of keratins on autolysosomal degradation and recycling. What's already known about this topic? Terminal epidermal differentiation is a multistep process that includes the elimination of cellular components by autophagy. Autophagy-impaired keratinocytes have been shown to result in thickening of epidermal layers. Hyperkeratosis also occurs in pachyonychia congenita (PC), a rare skin disease caused by mutations in keratins 6, 16 and 17. What does this study add? Keratins contribute to mitochondrial quality control as well as maintenance of mitochondria-endoplasmic reticulum contact sites. Keratins influence autolysosomal maturation or reformation. What is the translational message? Overaged mitochondria and autolysosomes accumulate in PC. Mutations in keratin 6a lead to severely impaired mitophagy, which might contribute to PC pathogenesis.
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Affiliation(s)
- S M Lehmann
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Aachen, Germany
| | - R E Leube
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Aachen, Germany
| | - N Schwarz
- Institute of Molecular and Cellular Anatomy, RWTH Aachen University, Aachen, Germany
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25
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Qomaladewi NP, Kim MY, Cho JY. Rottlerin Reduces cAMP/CREB-Mediated Melanogenesis via Regulation of Autophagy. Int J Mol Sci 2019; 20:E2081. [PMID: 31035588 PMCID: PMC6540014 DOI: 10.3390/ijms20092081] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 04/23/2019] [Accepted: 04/26/2019] [Indexed: 02/07/2023] Open
Abstract
Melanogenesis is the sequential process of melanin production by melanocytes in order to protect the skin from harmful stimuli. Melanogenesis is disrupted by radiation exposure, which results in the differentiation of melanocytes into melanoma. Recently, some methods have been developed to maintain the instability of melanogenesis in melanoma by activating cellular autophagy. However, there is still a lack of knowledge about how autophagy is involved in the regulation of melanogenesis in melanoma cells. Here, we used rottlerin as an autophagy inducer to investigate the role of the cyclic adenosine monophosphate (cAMP)/cAMP response element binding (CREB) signaling pathway in melanogenesis. We found that rottlerin can inhibit melanin production by targeting cAMP, which is initially activated by alpha-melanocyte stimulating hormone (α-MSH). Our findings suggest that rottlerin has a pivotal role as an autophagy inducer in the regulation of melanogenesis by targeting the cAMP/CREB signaling pathway.
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Affiliation(s)
| | - Mi-Yeon Kim
- School of Systems Biomedical Science, Soongsil University, Seoul 06978, Korea.
| | - Jae Youl Cho
- Department of Integrative Biotechnology, Sungkyunkwan University, Suwon 16419, Korea.
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26
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Raam L, Kaleviste E, Šunina M, Vaher H, Saare M, Prans E, Pihlap M, Abram K, Karelson M, Peterson P, Rebane A, Kisand K, Kingo K. Lymphoid Stress Surveillance Response Contributes to Vitiligo Pathogenesis. Front Immunol 2018; 9:2707. [PMID: 30515176 PMCID: PMC6255962 DOI: 10.3389/fimmu.2018.02707] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/01/2018] [Indexed: 11/13/2022] Open
Abstract
Vitiligo is a chronic multifactorial depigmentation disorder characterized by the destruction and functional loss of melanocytes. Although a direct cytotoxic T cell attack is thought to be responsible for melanocyte damage, the events leading to the loss of self-tolerance toward melanocytic antigens are not understood. This research aimed to identify novel cellular and molecular factors that participate in vitiligo pathogenesis through the application of gene expression and immunofluorescence analysis of skin biopsy samples along with immunophenotyping of circulating cells. Our study provides insights into the mechanisms involved in melanocyte destruction. The upregulation of stress-ligand MICA/MICB, recognized by activating receptors on innate and innate-like T cells, imply involvement of lymphoid stress surveillance responses in vitiligo lesions. A simultaneous increase in the expression of transcription factor EOMES that is characteristic for innate-like virtual memory T cells, suggest a similar scenario. Local lymphoid stress surveillance has been previously associated with the amplification of systemic humoral responses that were mirrored in our study by increased T follicular helper cells and switched memory B cell proportions in patients with active vitiligo. In addition, microtubule-associated protein light chain 3 staining was compatible with the activation of autophagy in keratinocytes and in the remaining melanocytes of vitiligo lesional skin.
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Affiliation(s)
- Liisi Raam
- Department of Dermatology, University of Tartu, Tartu, Estonia.,Dermatology Clinic, Tartu University Hospital, Tartu, Estonia
| | - Epp Kaleviste
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Marina Šunina
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Helen Vaher
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Mario Saare
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Ele Prans
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Maire Pihlap
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Kristi Abram
- Department of Dermatology, University of Tartu, Tartu, Estonia.,Dermatology Clinic, Tartu University Hospital, Tartu, Estonia
| | - Maire Karelson
- Department of Dermatology, University of Tartu, Tartu, Estonia.,Dermatology Clinic, Tartu University Hospital, Tartu, Estonia
| | - Pärt Peterson
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Ana Rebane
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Kai Kisand
- Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia
| | - Külli Kingo
- Department of Dermatology, University of Tartu, Tartu, Estonia.,Dermatology Clinic, Tartu University Hospital, Tartu, Estonia
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Roohbakhsh A, Shamsizadeh A, Hayes A, Reiter RJ, Karimi G. Melatonin as an endogenous regulator of diseases: The role of autophagy. Pharmacol Res 2018; 133:265-276. [DOI: 10.1016/j.phrs.2018.01.022] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 12/17/2017] [Accepted: 01/29/2018] [Indexed: 12/22/2022]
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28
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Sil P, Wong SW, Martinez J. More Than Skin Deep: Autophagy Is Vital for Skin Barrier Function. Front Immunol 2018; 9:1376. [PMID: 29988591 PMCID: PMC6026682 DOI: 10.3389/fimmu.2018.01376] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 06/04/2018] [Indexed: 12/30/2022] Open
Abstract
The skin is a highly organized first line of defense that stretches up to 1.8 m2 and is home to more than a million commensal bacteria. The microenvironment of skin is driven by factors such as pH, temperature, moisture, sebum level, oxidative stress, diet, resident immune cells, and infectious exposure. The skin has a high turnover of cells as it continually bares itself to environmental stresses. Notwithstanding these limitations, it has devised strategies to adapt as a nutrient-scarce site. To perform its protective function efficiently, it relies on mechanisms to continuously remove dead cells without alarming the immune system, actively purging the dying/senescent cells by immunotolerant efferocytosis. Both canonical (starvation-induced, reactive oxygen species, stress, and environmental insults) and non-canonical (selective) autophagy in the skin have evolved to perform astute due-diligence and housekeeping in a quiescent fashion for survival, cellular functioning, homeostasis, and immune tolerance. The autophagic “homeostatic rheostat” works tirelessly to uphold the delicate balance in immunoregulation and tolerance. If this equilibrium is upset, the immune system can wreak havoc and initiate pathogenesis. Out of all the organs, the skin remains under-studied in the context of autophagy. Here, we touch upon some of the salient features of autophagy active in the skin.
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Affiliation(s)
- Payel Sil
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
| | - Sing-Wai Wong
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States.,Oral and Craniofacial Biomedicine Curriculum, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jennifer Martinez
- Immunity, Inflammation, and Disease Laboratory, National Institute of Environmental Health Sciences, Durham, NC, United States
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Yanagihara M, Makino T, Shimizu T, Mochizuki T. Nerve alterations showing autophagy in 2 patients with lichen aureus. J Cutan Pathol 2018; 45:423-427. [DOI: 10.1111/cup.13131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 02/15/2018] [Accepted: 02/16/2018] [Indexed: 11/27/2022]
Affiliation(s)
- Makoto Yanagihara
- Department of Dermatology; Shinseikai Toyama Hospital; Imizu Toyama Japan
| | - Teruhiko Makino
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama Japan
| | - Tadamichi Shimizu
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences; University of Toyama; Toyama Japan
| | - Takashi Mochizuki
- Department of Dermatology; Kanazawa Medical University; Kahoku Ishikawa Japan
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30
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Varshney P, Saini N. PI3K/AKT/mTOR activation and autophagy inhibition plays a key role in increased cholesterol during IL-17A mediated inflammatory response in psoriasis. Biochim Biophys Acta Mol Basis Dis 2018; 1864:1795-1803. [PMID: 29432814 DOI: 10.1016/j.bbadis.2018.02.003] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/25/2018] [Accepted: 02/08/2018] [Indexed: 11/29/2022]
Abstract
Psoriasis is an immune-mediated inflammatory disease of the skin. Previous studies including ours have shown that IL-17A plays a major role in its pathogenesis; however, its precise molecular mechanism of action is not well understood. Cytokines like TNF α and IL-23 are also important in mediating the disease and some studies have also reported autophagy as a novel mechanism by which cytokines controls the immune response. Herein, we investigated the effect of IL-17A on autophagy and reveal crosstalk between autophagy and cholesterol signaling in keratinocytes. Our results suggest that IL-17A stimulated keratinocytes activated PI3K/AKT/mTOR signaling and inhibited autophagy by simultaneously inhibiting autophagosome formation and enhancing autophagic flux. Western blotting was utilized to detect the expression of autophagic markers (LC3 and p62), PI3K, mTOR and AKT. Induction of autophagy by mTOR inhibitor rapamycin and/or starvation also inhibited the levels of IL-17A secreted IL-8, CCL20 and S100A7 in keratinocytes. Herein, we also observed that inhibition of autophagy by IL-17A was accompanied by enhanced cellular cholesterol levels which in turn regulated the autophagic flux. To investigate crosstalk between autophagy and cellular cholesterol, we used methyl-β-cyclodextrin (MβCD), which disrupts detergent-insoluble microdomains (DIMs) by depleting cells of cholesterol and checked autophagy. Decreased expression of LC3-II in psoriatic lesional skin compared to non-lesional skin and induction of autophagy by anti-psoriatic drug methotrexate in keratinocytes further confirms the role of autophagy in psoriasis. Our findings suggest that modulators of autophagy and/or cholesterol levels may be developed, and also may lead to new therapeutic agents for psoriasis treatment.
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Affiliation(s)
- Pallavi Varshney
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India; Academy of Scientific & Innovative Research, CSIR-Institute of Genomics and Integrative Biology, Delhi 110007, India
| | - Neeru Saini
- Functional Genomics Unit, CSIR-Institute of Genomics and Integrative Biology, Mall Road, Delhi 110007, India; Academy of Scientific & Innovative Research, CSIR-Institute of Genomics and Integrative Biology, Delhi 110007, India.
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31
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Bullón P, Castejón-Vega B, Román-Malo L, Jimenez-Guerrero MP, Cotán D, Forbes-Hernandez TY, Varela-López A, Pérez-Pulido AJ, Giampieri F, Quiles JL, Battino M, Sánchez-Alcázar JA, Cordero MD. Autophagic dysfunction in patients with Papillon-Lefèvre syndrome is restored by recombinant cathepsin C treatment. J Allergy Clin Immunol 2018; 142:1131-1143.e7. [PMID: 29410039 DOI: 10.1016/j.jaci.2018.01.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 01/11/2018] [Accepted: 01/20/2018] [Indexed: 01/13/2023]
Abstract
BACKGROUND Cathepsin C (CatC) is a lysosomal enzyme involved in activation of serine proteases from immune and inflammatory cells. Several loss-of-function mutations in the CatC gene have been shown to be the genetic mark of Papillon-Lefèvre syndrome (PLS), a rare autosomal recessive disease characterized by severe early-onset periodontitis, palmoplantar hyperkeratosis, and increased susceptibility to infections. Deficiencies or dysfunction in other cathepsin family proteins, such as cathepsin B or D, have been associated with autophagic and lysosomal disorders. OBJECTIVES Here we characterized the basis for autophagic dysfunction in patients with PLS by analyzing skin fibroblasts derived from patients with several mutations in the CatC gene and reduced enzymatic activity. METHODS Skin fibroblasts were isolated from patients with PLS assessed by using genetic analysis. Authophagic flux dysfunction was evaluated by examining accumulation of p62/SQSTM1 and a bafilomycin assay. Ultrastructural analysis further confirmed abnormal accumulation of autophagic vesicles in mutant cells. A recombinant CatC protein was produced by a baculovirus system in insect cell cultures. RESULTS Mutant fibroblasts from patients with PLS showed alterations in oxidative/antioxidative status, reduced oxygen consumption, and a marked autophagic dysfunction associated with autophagosome accumulation. These alterations were accompanied by lysosomal permeabilization, cathepsin B release, and NLR family pyrin domain containing 3 (NLRP3) inflammasome activation. Treatment of mutant fibroblasts with recombinant CatC improved cell growth and autophagic flux and partially restored lysosomal permeabilization. CONCLUSIONS Our data provide a novel molecular mechanism underlying PLS. Impaired autophagy caused by insufficient lysosomal function might represent a new therapeutic target for PLS.
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Affiliation(s)
- Pedro Bullón
- Research Laboratory, Dental School, University of Sevilla, Seville, Spain; Department of Periodontology, Dental School, University of Sevilla, Seville, Spain
| | | | - Lourdes Román-Malo
- Research Laboratory, Dental School, University of Sevilla, Seville, Spain; Department of Periodontology, Dental School, University of Sevilla, Seville, Spain
| | - María Paz Jimenez-Guerrero
- Centro Andaluz de Biología del Desarrollo (CABD), and Centro de Investigación Biomédica en Red: Enfermedades Raras, Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas, Universidad Pablo de Olavide, Seville, Spain
| | - David Cotán
- Centro Andaluz de Biología del Desarrollo (CABD), and Centro de Investigación Biomédica en Red: Enfermedades Raras, Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas, Universidad Pablo de Olavide, Seville, Spain
| | - Tamara Y Forbes-Hernandez
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Università Politecnica delle Marche, Ancona, Italy
| | - Alfonso Varela-López
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center (CIBM), University of Granada, Armilla, Spain
| | - Antonio J Pérez-Pulido
- Centro Andaluz de Biología del Desarrollo (CABD), Universidad Pablo de Olavide-CSIC-Junta de Andalucía, Seville, Spain
| | - Francesca Giampieri
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Università Politecnica delle Marche, Ancona, Italy
| | - José L Quiles
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center (CIBM), University of Granada, Armilla, Spain
| | - Maurizio Battino
- Dipartimento di Scienze Cliniche Specialistiche ed Odontostomatologiche, Sez. Biochimica, Università Politecnica delle Marche, Ancona, Italy
| | - José A Sánchez-Alcázar
- Centro Andaluz de Biología del Desarrollo (CABD), and Centro de Investigación Biomédica en Red: Enfermedades Raras, Instituto de Salud Carlos III, Consejo Superior de Investigaciones Científicas, Universidad Pablo de Olavide, Seville, Spain
| | - Mario D Cordero
- Department of Physiology, Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center (CIBM), University of Granada, Armilla, Spain.
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PGRN Suppresses Inflammation and Promotes Autophagy in Keratinocytes Through the Wnt/β-Catenin Signaling Pathway. Inflammation 2017; 39:1387-94. [PMID: 27239673 DOI: 10.1007/s10753-016-0370-y] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Psoriasis is a chronic, immune-mediated inflammatory skin disease that has a major impact on patients' quality of life. Progranulin (PGRN) is highly expressed in skin diseases and plays an important role in inflammation response and autophagy. However, the function of PGRN in the immune system and autophagy in psoriasis has not been clearly identified and elaborated on. Thus, this study aimed to investigate the role of PGRN on the inflammatory and autophagy process underlying inflammation in HaCaT cells. We showed that PGRN was markedly highly expressed in psoriasis lesions and inflammatory HaCaT cells. Specific silencing of PGRN promoted the production of the inflammatory cytokines IL-1β, IL-6, COX-2, iNOs, and MCP-1. Furthermore, PGRN siRNA promoted autophagy-related gene p62 and suppressed LC3II and Atg7 in HaCaT cells, while overexpression of PGRN showed a contrary effect. Moreover, knockdown of PGRN upregulated the expression levels of β-catenin, cyclin D1, and c-myc proteins. Finally, we demonstrated that IWP-2, an inhibitor of the Wnt/β-catenin signaling pathway, stemmed the pro-inflammatory and anti-autophagy effect of PGRN siRNA in TNF-α-treated HaCaT cells. Collectively, our findings suggest that PGRN is upregulated in psoriasis lesions and that the overexpression of PGRN inhibits the inflammation in keratinocytes induced by TNF-α by negatively regulating the production of inflammatory factors and positively mediating autophagy through the Wnt/β-catenin signaling pathway; this indicated that overexpression of PGRN may be a potential therapeutic option in psoriasis.
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Chen RJ, Lee YH, Yeh YL, Wang YJ, Wang BJ. The Roles of Autophagy and the Inflammasome during Environmental Stress-Triggered Skin Inflammation. Int J Mol Sci 2016; 17:E2063. [PMID: 27941683 PMCID: PMC5187863 DOI: 10.3390/ijms17122063] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/29/2016] [Accepted: 12/05/2016] [Indexed: 02/07/2023] Open
Abstract
Inflammatory skin diseases are the most common problem in dermatology. The induction of skin inflammation by environmental stressors such as ultraviolet radiation (UVR), hexavalent chromium (Cr(VI)) and TiO₂/ZnO/Ag nanoparticles (NPs) has been demonstrated previously. Recent studies have indicated that the inflammasome is often wrongly activated by these environmental irritants, thus inducing massive inflammation and resulting in the development of inflammatory diseases. The regulation of the inflammasome with respect to skin inflammation is complex and is still not completely understood. Autophagy, an intracellular degradation system that is associated with the maintenance of cellular homeostasis, plays a key role in inflammasome inactivation. As a housekeeping pathway, cells utilize autophagy to maintain the homeostasis of the organ structure and function when exposed to environmental stressors. However, only a few studies have examined the effect of autophagy and/or the inflammasome on skin pathogenesis. Here we review recent findings regarding the involvement of autophagy and inflammasome activation during skin inflammation. We posit that autophagy induction is a novel mechanism inter-modulating environmental stressor-induced skin inflammation. We also attempt to highlight the role of the inflammasome and the possible underlying mechanisms and pathways reflecting the pathogenesis of skin inflammation induced by UVR, Cr(VI) and TiO₂/ZnO/Ag NPs. A more profound understanding about the crosstalk between autophagy and the inflammasome will contribute to the development of prevention and intervention strategies against human skin disease.
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Affiliation(s)
- Rong-Jane Chen
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Yu-Hsuan Lee
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Ya-Ling Yeh
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
| | - Ying-Jan Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
- Department of Biomedical Informatics, Asia University, Taichung 41354, Taiwan.
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan.
- Graduate Institute of Clinical Medicine, Taipei Medical University, Taipei 110, Taiwan.
| | - Bour-Jr Wang
- Department of Environmental and Occupational Health, College of Medicine, National Cheng Kung University, Tainan 70428, Taiwan.
- Department of Occupational and Environmental Medicine, National Cheng Kung University Hospital, Tainan 70428, Taiwan.
- Department of Cosmetic Science and Institute of Cosmetic Science, Chia Nan University of Pharmacy and Science, Tainan 71710, Taiwan.
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Delicaflavone induces autophagic cell death in lung cancer via Akt/mTOR/p70S6K signaling pathway. J Mol Med (Berl) 2016; 95:311-322. [DOI: 10.1007/s00109-016-1487-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Revised: 10/26/2016] [Accepted: 11/07/2016] [Indexed: 12/20/2022]
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Abstract
Macroautophagy/autophagy is a conserved lysosomal degradation process essential for cell physiology and human health. By regulating apoptosis, inflammation, pathogen clearance, immune response and other cellular processes, autophagy acts as a modulator of pathogenesis and is a potential therapeutic target in diverse diseases. With regard to oral disease, autophagy can be problematic either when it is activated or impaired, because this process is involved in diverse functions, depending on the specific disease and its level of progression. In particular, activated autophagy functions as a cytoprotective mechanism under environmental stress conditions, which regulates tumor growth and mediates resistance to anticancer treatment in established tumors. During infections and inflammation, activated autophagy selectively delivers microbial antigens to the immune systems, and is therefore connected to the elimination of intracellular pathogens. Impaired autophagy contributes to oxidative stress, genomic instability, chronic tissue damage, inflammation and tumorigenesis, and is involved in aberrant bacterial clearance and immune priming. Hence, substantial progress in the study of autophagy provides new insights into the pathogenesis of oral diseases. This review outlines the mechanisms of autophagy, and highlights the emerging roles of this process in oral cancer, periapical lesions, periodontal diseases, and oral candidiasis.
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Affiliation(s)
- Ya-Qin Tan
- a The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education , School and Hospital of Stomatology, Wuhan University , Wuhan , Hubei , China
| | - Jing Zhang
- a The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education , School and Hospital of Stomatology, Wuhan University , Wuhan , Hubei , China.,b Department of Oral Medicine , School and Hospital of Stomatology, Wuhan University , Wuhan , Hubei , China
| | - Gang Zhou
- a The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education , School and Hospital of Stomatology, Wuhan University , Wuhan , Hubei , China.,b Department of Oral Medicine , School and Hospital of Stomatology, Wuhan University , Wuhan , Hubei , China
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Esteban MÁ, Cuesta A, Chaves-Pozo E, Meseguer J. Phagocytosis in Teleosts. Implications of the New Cells Involved. BIOLOGY 2015; 4:907-22. [PMID: 26690236 PMCID: PMC4690022 DOI: 10.3390/biology4040907] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 11/24/2015] [Accepted: 11/27/2015] [Indexed: 02/07/2023]
Abstract
Phagocytosis is the process by which cells engulf some solid particles to form internal vesicles known as phagosomes. Phagocytosis is in fact a specific form of endocytosis involving the vesicular interiorization of particles. Phagocytosis is essentially a defensive reaction against infection and invasion of the body by foreign substances and, in the immune system, phagocytosis is a major mechanism used to remove pathogens and/or cell debris. For these reasons, phagocytosis in vertebrates has been recognized as a critical component of the innate and adaptive immune responses to pathogens. Furthermore, more recent studies have revealed that phagocytosis is also crucial for tissue homeostasis and remodeling. Professional phagocytes in teleosts are monocyte/macrophages, granulocytes and dendritic cells. Nevertheless, in recent years phagocytic properties have also been attributed to teleost lymphocytes and thrombocytes. The possible implications of such cells on this important biological process, new factors affecting phagocytosis, evasion of phagocytosis or new forms of phagocytosis will be considered and discussed.
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Affiliation(s)
- María Ángeles Esteban
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
| | - Alberto Cuesta
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
| | - Elena Chaves-Pozo
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
| | - José Meseguer
- Department of Cell Biology and Histology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
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Talero E, García-Mauriño S, Ávila-Román J, Rodríguez-Luna A, Alcaide A, Motilva V. Bioactive Compounds Isolated from Microalgae in Chronic Inflammation and Cancer. Mar Drugs 2015; 13:6152-209. [PMID: 26437418 PMCID: PMC4626684 DOI: 10.3390/md13106152] [Citation(s) in RCA: 108] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 09/09/2015] [Accepted: 09/15/2015] [Indexed: 12/12/2022] Open
Abstract
The risk of onset of cancer is influenced by poorly controlled chronic inflammatory processes. Inflammatory diseases related to cancer development include inflammatory bowel disease, which can lead to colon cancer, or actinic keratosis, associated with chronic exposure to ultraviolet light, which can progress to squamous cell carcinoma. Chronic inflammatory states expose these patients to a number of signals with tumorigenic effects, including nuclear factor kappa B (NF-κB) and mitogen-activated protein kinases (MAPK) activation, pro-inflammatory cytokines and prostaglandins release and ROS production. In addition, the participation of inflammasomes, autophagy and sirtuins has been demonstrated in pathological processes such as inflammation and cancer. Chemoprevention consists in the use of drugs, vitamins, or nutritional supplements to reduce the risk of developing or having a recurrence of cancer. Numerous in vitro and animal studies have established the potential colon and skin cancer chemopreventive properties of substances from marine environment, including microalgae species and their products (carotenoids, fatty acids, glycolipids, polysaccharides and proteins). This review summarizes the main mechanisms of actions of these compounds in the chemoprevention of these cancers. These actions include suppression of cell proliferation, induction of apoptosis, stimulation of antimetastatic and antiangiogenic responses and increased antioxidant and anti-inflammatory activity.
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Affiliation(s)
- Elena Talero
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Sofía García-Mauriño
- Department of Plant Biology and Ecology, Faculty of Biology, University of Seville, Seville 41012, Spain.
| | - Javier Ávila-Román
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Azahara Rodríguez-Luna
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Antonio Alcaide
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
| | - Virginia Motilva
- Department of Pharmacology, Faculty of Pharmacy, University of Seville, Seville 41012, Spain.
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Abstract
Gasdermin A3 (Gsdma3) was originally identified in association with hair-loss phenotype in mouse mutants. Our previous study found that AE mutant mice, with a Y344H substitution at the C-terminal domain of Gsdma3, display inflammation-dependent alopecia and excoriation [Zhou et al. (2012) Am. J. Pathol. 180, 763-774]. Interestingly, we found that the newly-generated null mutant of Gsdma3 mice did not display the skin dysmorphology, indicating that Gsdma3 is not essential for differentiation of epidermal cells and maintenance of the hair cycle in normal physiological conditions. Consistently, human embryonic kidney (HEK)293 and HaCaT cells transfected with wild-type (WT) Gsdma3 did not show abnormal morphology. However, Gsdma3 Y344H mutation induced autophagy. Gsdma3 N-terminal domain, but not the C-terminal domain, also displayed the similar pro-autophagic activity. The Gsdma3 Y344H mutant protein and N-terminal domain-induced autophagy was associated with mitochondria and ROS generation. Co-expression of C-terminal domain reversed the cell autophagy induced by N-terminal domain. Moreover, C-terminal domain could be co-precipitated with N-terminal domain. These data indicated that the potential pro-autophagic activity of WT Gsdma3 protein is suppressed through an intramolecular inhibition mechanism. Studies on other members of the GSDM family suggested this mechanism is conserved in several sub-families.
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