1
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Hatfield D, Rodriguez W, Mehrmann T, Muller M. The antiviral protein Shiftless blocks p-body formation during KSHV infection. bioRxiv 2023:2023.11.16.567185. [PMID: 38014318 PMCID: PMC10680731 DOI: 10.1101/2023.11.16.567185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
P-bodies (PB) are non-membranous foci involved in determining mRNA fate by affecting translation and mRNA decay. In this study, we identify the anti-viral factor SHFL as a potent disassembly factor of PB. We show that PBs remain sparse in the presence of SHFL even in the context of oxidative stress, a major trigger for PB induction. Mutational approaches revealed that SHFL RNA binding activity is not required for its PB disassembly function. However, we have identified a new region of SHFL which bridges two distant domains as responsible for PB disassembly. Furthermore, we show that SHFL ability to disrupt PB formation is directly linked to its anti-viral activity during KSHV infection. While WT SHFL efficiently restricts KSHV lytic cycle, PB disruption defective mutants no longer lead to reactivation defects. SHFL-mediated PB disassembly also leads to increased expression of key anti-viral cytokines, further expanding SHFL dependent anti-viral state. Taken together, our observations suggest a role of SHFL in PB disassembly, which could have important anti-viral consequences during infection.
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Zhao X, Xia Z, Wang Z, Zhou M, Qiu X, Wang C, Xu T, Fang Q, Ming Z, Dong H. miR-182-5p attenuates Schistosoma japonicum-induced hepatic fibrosis by targeting tristetraprolin. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1421-30. [PMID: 36148947 DOI: 10.3724/abbs.2022130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Egg granuloma formation in the liver is the main pathological lesion caused by Schistosoma japonicum infection, which generally results in liver fibrosis and may lead to death in advanced patients. MicroRNAs (miRNAs) regulate the process of liver fibrosis, but the putative function of miRNAs in liver fibrosis induced by S. japonicum infection is largely unclear. Here, we detect a new miRNA, miR-182-5p, which shows significantly decreased expression in mouse livers after stimulation by soluble egg antigen (SEA) of S. japonicum or S. japonicum infection. Knockdown or overexpression of miR-182-5p in vitro causes the increased or decreased expression of tristetraprolin (TTP), an important immunosuppressive protein in the process of liver fibrosis. Furthermore, knockdown of miR-182-5p in vivo upregulates TTP expression and significantly alleviates S. japonicum-induced hepatic fibrosis. Our data demonstrate that downregulation of miR-182-5p increases the expression of TTP in mouse livers following schistosome infection, which leads to destabilization of inflammatory factor mRNAs and attenuates liver fibrosis. Our results uncover fine-tuning of liver inflammatory reactions related to liver fibrosis caused by S. japonicum infection and provide new insights into the regulation of schistosomiasis-induced hepatic fibrosis.
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3
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Liu G, Li D, Zhang L, Xu Q, Zhuang D, Liu P, Hu L, Deng H, Sun J, Wang S, Zheng B, Guo J, Wu X. Phenformin Down-Regulates c-Myc Expression to Suppress the Expression of Pro-Inflammatory Cytokines in Keratinocytes. Cells 2022; 11:cells11152429. [PMID: 35954273 PMCID: PMC9368166 DOI: 10.3390/cells11152429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/27/2022] [Accepted: 08/02/2022] [Indexed: 11/16/2022] Open
Abstract
The treatment of many skin inflammation diseases, such as psoriasis and atopic dermatitis, is still a challenge and inflammation plays important roles in multiple stages of skin tumor development, including initiation, promotion and metastasis. Phenformin, a biguanide drug, has been shown to play a more efficient anti-tumor function than another well-known biguanide drug, metformin, which has been reported to control the expression of pro-inflammatory cytokines; however, little is known about the effects of phenformin on skin inflammation. This study used a mouse acute inflammation model, ex vivo skin organ cultures and in vitro human primary keratinocyte cultures to demonstrate that phenformin can suppress acute skin inflammatory responses induced by 12-O-tetradecanoylphorbol-13-acetate (TPA) in vivo and significantly suppresses the pro-inflammatory cytokines IL-1β, IL-6 and IL-8 in human primary keratinocytes in vitro. The suppression of pro-inflammatory cytokine expression by phenformin was not directly through regulation of the MAPK or NF-κB pathways, but by controlling the expression of c-Myc in human keratinocytes. We demonstrated that the overexpression of c-Myc can induce pro-inflammatory cytokine expression and counteract the suppressive effect of phenformin on cytokine expression in keratinocytes. In contrast, the down-regulation of c-Myc produces effects similar to phenformin, both in cytokine expression by keratinocytes in vitro and in skin inflammation in vivo. Finally, we showed that phenformin, as an AMPK activator, down-regulates the expression of c-Myc through regulation of the AMPK/mTOR pathways. In summary, phenformin inhibits the expression of pro-inflammatory cytokines in keratinocytes through the down-regulation of c-Myc expression to play an anti-inflammation function in the skin.
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Affiliation(s)
- Guanyi Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Dingyang Li
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Liwei Zhang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Qiuping Xu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Dexuan Zhuang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Panpan Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Pediatrics Dentistry, Department of Preventive Dentistry, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Ling Hu
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Huiting Deng
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Jianfeng Sun
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
| | - Shuangshuang Wang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
| | - Bin Zheng
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02129, USA
| | - Jing Guo
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
- Correspondence: (J.G.); (X.W.)
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road West, Jinan 250012, China
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, Savaid Stomatology School, Hangzhou Medical College, Ningbo 315000, China
- Correspondence: (J.G.); (X.W.)
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4
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Li C, Cai Q, Wu X, Tan Z, Yao L, Huang S, Zhang W, Hong Z, Chen Z, Zhang L. Anti-inflammatory Study on the Constituents of Angelica sinensis (Oliv.) Diels, Angelica dahurica (Hoffm.) Benth. & Hook.f. ex Franch. & Sav., Angelica pubescence Maxim and Foeniculum vulgare Mill. Essential Oils. J Oleo Sci 2022; 71:1207-1219. [PMID: 35793972 DOI: 10.5650/jos.ess22031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Umbelliferae plants, which are widely used as traditional Chinese medicine because of their characteristics of relieving rheumatism, alleviating fever, circulating blood and easing pain. This experimental study was based on ear edema model caused by 12-O-tetracycline-propylphenol-13-acetic acid (TPA) in mice and compared with the Ibuprofen (Ib) group. Gas chromatography-mass spectrometry (GC-MS) was used to analyse the composition of the essential oils from the four studied Umbelliferae plants (Angelica sinensis (Oliv.) Diels, A. dahurica (Hoffm.) Benth. & Hook.f. ex Franch. & Sav., A. pubescens Maxim and Foeniculum vulgare Mill.). Biologically active components in volatile oils from the four studied Umbelliferae plants were evaluated. The expression levels of inflammatory cytokines Tumor Necrosis Factor-α (TNF-α), Cyclooxygenase-2 (COX-2), Interleukin-6 (IL-6) and RelA (p65) in mouse skin were determined by immunohistochemical method. The refractive index of the four essential oils was calculated. A total of 239 compounds were identified by GC-MS from the four studied plants, and the main constituents were osthole (44.61%, APEOs), obepin (0.59%, APEOs & 86.58%, FVEOs), undecanol (8.58%, ADEOs), α-muurolene (7.95%, ADEOs) and cis-anethol (9.11%, ADEOs). E-ligustilide (0.14%, APEOs & 81.14%, ASEOs), (-)-spathulenol (0.08%, FVEOs & 1.21%, ASEOs), (-)-terpinen-4-ol (4.91%, FVEOs), 2-butylthiolane (5.76%, APEOs) and α-bisabolol (3.80%, APEOs). This study showed that all the essential oils from the four studied Umbelliferae plants contained various lactones, including ligustrongolactone, trans-anisol and imperatorin. According to the results of the TPA induction test in the mouse ear edema model, the essential oils of four Umbelliferae plants reduced the levels of inflammatory cytokines TNF-α, COX-2, IL-6 and p65. All of them showed extraordinary biological activity in anti-inflammatory, so they have potential application value for biomedical products, pharmaceutical preparations, natural functional nutrients and cosmetic additives.
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Affiliation(s)
- Chunlian Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Qiuyang Cai
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Xianyi Wu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Zekai Tan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Lewen Yao
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Shiyuan Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Weicheng Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Zhengyi Hong
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Zhuoyu Chen
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology
| | - Lanyue Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology.,Guangdong Provincial Key Laboratory of Plant Resources Biorefinery
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5
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Blue ED, Freeman SC, Lobl MB, Clarey DD, Fredrick RL, Wysong A, Whitley MJ. Cutaneous squamous cell carcinoma arising in immunosuppressed patients: a systematic review of tumor profiling studies. JID Innovations 2022. [PMID: 35620703 PMCID: PMC9127418 DOI: 10.1016/j.xjidi.2022.100126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 02/08/2022] [Accepted: 03/04/2022] [Indexed: 12/01/2022] Open
Abstract
As solid organ transplantation becomes more prevalent, more individuals are living as members of the immunosuppressed population with an elevated risk for cutaneous squamous cell carcinoma (cSCC). Although great progress has been made in understanding the pathogenesis of cSCC in general, little is known about the drivers of tumorigenesis in immunosuppressed patients and organ-transplant recipients, specifically. This systematic review sought to synthesize information regarding the genetic and epigenetic alterations as well as changes in protein and mRNA expression that place this growing population at risk for cSCC, influence treatment response, and promote tumor aggressiveness. This review will provide investigators with a framework to identify future areas of investigation and clinicians with additional insight into how to best manage these patients.
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6
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Wang S, Qian H, Zhang L, Liu P, Zhuang D, Zhang Q, Bai F, Wang Z, Yan Y, Guo J, Huang J, Wu X. Inhibition of Calcineurin/NFAT Signaling Blocks Oncogenic H-Ras Induced Autophagy in Primary Human Keratinocytes. Front Cell Dev Biol 2021; 9:720111. [PMID: 34350189 PMCID: PMC8328491 DOI: 10.3389/fcell.2021.720111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 06/28/2021] [Indexed: 12/12/2022] Open
Abstract
Mutations of H-Ras, a member of the RAS family, are preferentially found in cutaneous squamous cell carcinomas (SCCs). H-Ras has been reported to induce autophagy, which plays an essential role in tissue homeostasis in multiple types of cancer cells and in fibroblasts, however, the potential role of H-Ras in regulating autophagy in human keratinocytes has not been reported. In this study, we found that the stable expression of the G12V mutant of H-RAS (H-Ras G12V ) induced autophagy in human keratinocytes, and interestingly, the induction of autophagy was strongly blocked by inhibiting the calcineurin/nuclear factor of activated T cells (NFAT) pathway with either a calcineurin inhibitor (Cyclosporin A) or a NFAT inhibitor (VIVIT), or by the small interfering RNA (siRNA) mediated knockdown of calcineurin B1 or NFATc1 in vitro, as well as in vivo. To characterize the role of the calcineurin/NFAT pathway in H-Ras induced autophagy, we found that H-Ras G12V promoted the nuclear translocation of NFATc1, an indication of the activation of the calcineurin/NFAT pathway, in human keratinocytes. However, activation of NFATc1 either by the forced expression of NFATc1 or by treatment with phenformin, an AMPK activator, did not increase the formation of autophagy in human keratinocytes. Further study revealed that inhibiting the calcineurin/NFAT pathway actually suppressed H-Ras expression in H-Ras G12V overexpressing cells. Finally, chromatin immunoprecipitation (ChIP) assays showed that NFATc1 potentially binds the promoter region of H-Ras and the binding efficiency was significantly enhanced by the overexpression of H-Ras G12V , which was abolished by treatment with the calcineurin/NFAT pathway inhibitors cyclosporine A (CsA) or VIVIT. Taking these data together, the present study demonstrates that the calcineurin/NFAT signaling pathway controls H-Ras expression and interacts with the H-Ras pathway, involving the regulation of H-Ras induced autophagy in human keratinocytes.
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Affiliation(s)
- Shuangshuang Wang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Hua Qian
- Department of Stomatology, The Second Hospital of Shandong University, Jinan, China
| | - Liwei Zhang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Panpan Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Department of Pediatric Dentistry, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Dexuan Zhuang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Qun Zhang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Fuxiang Bai
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Zhihong Wang
- Qilu Children's Hospital of Shandong University, Jinan, China
| | - Yonggan Yan
- Center for Advanced Jet Engineering Technologies, Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan, China
| | - Jing Guo
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Savaid Stomatology School of Hangzhou Medical College, Ningbo Stomatology Hospital, Ningbo, China
| | - Jun Huang
- Center for Advanced Jet Engineering Technologies, Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education, School of Mechanical Engineering, Shandong University, Jinan, China
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
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7
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Zhang D, Zhou Z, Yang R, Zhang S, Zhang B, Tan Y, Chen L, Li T, Tu J. Tristetraprolin, a Potential Safeguard Against Carcinoma: Role in the Tumor Microenvironment. Front Oncol 2021; 11:632189. [PMID: 34026612 PMCID: PMC8138596 DOI: 10.3389/fonc.2021.632189] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 04/14/2021] [Indexed: 12/15/2022] Open
Abstract
Tristetraprolin (TTP), a well-known RNA-binding protein, primarily affects the expression of inflammation-related proteins by binding to the targeted AU-rich element in the 3' untranslated region after transcription and subsequently mediates messenger RNA decay. Recent studies have focused on the role of TTP in tumors and their related microenvironments, most of which have referred to TTP as a potential tumor suppressor involved in regulating cell proliferation, apoptosis, and metastasis of various cancers, as well as tumor immunity, inflammation, and metabolism of the microenvironment. Elevated TTP expression levels could aid the diagnosis and treatment of different cancers, improving the prognosis of patients. The aim of this review is to describe the role of TTP as a potential safeguard against carcinoma.
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Affiliation(s)
- Diwen Zhang
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China.,Department of Biomedical Sciences, City University of Hong Kong, Hong Kong, China
| | - Zhigang Zhou
- The Second Affiliated Hospital of Guilin Medical University, Guilin, China
| | - Ruixia Yang
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Sujun Zhang
- Department of Experimental Animals, University of South China, Hengyang, China
| | - Bin Zhang
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Yanxuan Tan
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Lingyao Chen
- Pharmacy School of Guilin Medical University, Guilin, China
| | - Tao Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agriculture Science, Shanghai, China
| | - Jian Tu
- Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China.,Pharmacy School of Guilin Medical University, Guilin, China
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8
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Zu T, Wang D, Xu S, Lee CAA, Zhen E, Yoon CH, Abarzua P, Wang S, Frank NY, Wu X, Lian CG, Murphy GF. ATF-3 expression inhibits melanoma growth by downregulating ERK and AKT pathways. J Transl Med 2021; 101:636-647. [PMID: 33299127 PMCID: PMC8091967 DOI: 10.1038/s41374-020-00516-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 11/02/2020] [Accepted: 11/03/2020] [Indexed: 11/09/2022] Open
Abstract
Activating transcription factor 3 (ATF-3), a cyclic AMP-dependent transcription factor, has been shown to play a regulatory role in melanoma, although its function during tumor progression remains unclear. Here, we demonstrate that ATF-3 exhibits tumor suppressive function in melanoma. Specifically, ATF-3 nuclear expression was significantly diminished with melanoma progression from nevi to primary to metastatic patient melanomas, correlating low expression with poor prognosis. Significantly low expression of ATF-3 was also found in cultured human metastatic melanoma cell lines. Importantly, overexpression of ATF-3 in metastatic melanoma cell lines significantly inhibited cell growth, migration, and invasion in vitro; as well as abrogated tumor growth in a human melanoma xenograft mouse model in vivo. RNA sequencing analysis revealed downregulation of ERK and AKT pathways and upregulation in apoptotic-related genes in ATF-3 overexpressed melanoma cell lines, which was further validated by Western-blot analysis. In summary, this study demonstrated that diminished ATF-3 expression is associated with melanoma virulence and thus provides a potential target for novel therapies and prognostic biomarker applications.
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Affiliation(s)
- Tingjian Zu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shangdong, China
- School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, Shangdong, China
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Diana Wang
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, MA, USA
| | - Shuyun Xu
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Catherine A A Lee
- Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Ellen Zhen
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Charles H Yoon
- Department of Surgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Phammela Abarzua
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Shuangshuang Wang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shangdong, China
| | - Natasha Y Frank
- Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
- Department of Medicine, VA Boston Healthcare System, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shangdong, China.
- Cutaneous Biology Research Center, Massachusetts General Hospital, Boston, MA, USA.
| | - Christine G Lian
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA.
| | - George F Murphy
- Department of Pathology, Program in Dermatopathology, Brigham and Women's Hospital, Boston, MA, USA.
- Harvard Stem Cell Institute, Harvard University, Cambridge, MA, USA.
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9
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Assabban A, Dubois-Vedrenne I, Van Maele L, Salcedo R, Snyder BL, Zhou L, Azouz A, de Toeuf B, Lapouge G, La C, Melchior M, Nguyen M, Thomas S, Wu SF, Hu W, Kruys V, Blanpain C, Trinchieri G, Gueydan C, Blackshear PJ, Goriely S. Tristetraprolin expression by keratinocytes protects against skin carcinogenesis. JCI Insight 2021; 6:140669. [PMID: 33497366 PMCID: PMC8021119 DOI: 10.1172/jci.insight.140669] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 01/20/2021] [Indexed: 01/27/2023] Open
Abstract
Cancer is caused primarily by genomic alterations resulting in deregulation of gene regulatory circuits in key growth, apoptosis, or DNA repair pathways. Multiple genes associated with the initiation and development of tumors are also regulated at the level of mRNA decay, through the recruitment of RNA-binding proteins to AU-rich elements (AREs) located in their 3'-untranslated regions. One of these ARE-binding proteins, tristetraprolin (TTP; encoded by Zfp36), is consistently dysregulated in many human malignancies. Herein, using regulated overexpression or conditional ablation in the context of cutaneous chemical carcinogenesis, we show that TTP represents a critical regulator of skin tumorigenesis. We provide evidence that TTP controlled both tumor-associated inflammation and key oncogenic pathways in neoplastic epidermal cells. We identify Areg as a direct target of TTP in keratinocytes and show that EGFR signaling potentially contributed to exacerbated tumor formation. Finally, single-cell RNA-Seq analysis indicated that ZFP36 was downregulated in human malignant keratinocytes. We conclude that TTP expression by epidermal cells played a major role in the control of skin tumorigenesis.
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Affiliation(s)
- Assiya Assabban
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Ingrid Dubois-Vedrenne
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Laurye Van Maele
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Rosalba Salcedo
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | | | - Lecong Zhou
- Integrative Bioinformatics Support Group, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, USA
| | - Abdulkader Azouz
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Bérengère de Toeuf
- Laboratoire de Biologie Moléculaire du Gène, ULB Center for Research in Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Gaëlle Lapouge
- Laboratory of Stem Cells and Cancer, WELBIO, and ULB Cancer Research Center, Université Libre de Bruxelles, Brussels, Belgium
| | - Caroline La
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Maxime Melchior
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Muriel Nguyen
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Séverine Thomas
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
| | - Si Fan Wu
- Laboratoire de Biologie Moléculaire du Gène, ULB Center for Research in Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Wenqian Hu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, New York, USA
| | - Véronique Kruys
- Laboratoire de Biologie Moléculaire du Gène, ULB Center for Research in Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Cédric Blanpain
- Laboratory of Stem Cells and Cancer, WELBIO, and ULB Cancer Research Center, Université Libre de Bruxelles, Brussels, Belgium
| | - Giorgio Trinchieri
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, Maryland, USA
| | - Cyril Gueydan
- Laboratoire de Biologie Moléculaire du Gène, ULB Center for Research in Immunology, Université Libre de Bruxelles, Gosselies, Belgium
| | - Perry J. Blackshear
- Signal Transduction Laboratory and
- Departments of Medicine and Biochemistry, Duke University Medical Center, Durham, North Carolina, USA
| | - Stanislas Goriely
- Institute for Medical Immunology, ULB Center for Research in Immunology, and ULB Center for Cancer Research, Université Libre de Bruxelles, Gosselies, Belgium
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Xu L, Zu T, Li T, Li M, Mi J, Bai F, Liu G, Wen J, Li H, Brakebusch C, Wang X, Wu X. ATF3 downmodulates its new targets IFI6 and IFI27 to suppress the growth and migration of tongue squamous cell carcinoma cells. PLoS Genet 2021; 17:e1009283. [PMID: 33539340 PMCID: PMC7888615 DOI: 10.1371/journal.pgen.1009283] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 02/17/2021] [Accepted: 11/18/2020] [Indexed: 01/16/2023] Open
Abstract
Activating transcription factor 3 (ATF3) is a key transcription factor involved in regulating cellular stress responses, with different expression levels and functions in different tissues. ATF3 has also been shown to play crucial roles in regulating tumor development and progression, however its potential role in oral squamous cell carcinomas has not been fully explored. In this study, we examined biopsies of tongue squamous cell carcinomas (TSCCs) and found that the nuclear expression level of ATF3 correlated negatively with the differentiation status of TSCCs, which was validated by analysis of the ATGC database. By using gain- or loss- of function analyses of ATF3 in four different TSCC cell lines, we demonstrated that ATF3 negatively regulates the growth and migration of human TSCC cells in vitro. RNA-seq analysis identified two new downstream targets of ATF3, interferon alpha inducible proteins 6 (IFI6) and 27 (IFI27), which were upregulated in ATF3-deleted cells and were downregulated in ATF3-overexpressing cells. Chromatin immunoprecipitation assays showed that ATF3 binds the promoter regions of the IFI6 and IFI27 genes. Both IFI6 and IFI27 were highly expressed in TSCC biopsies and knockdown of either IFI6 or IFI27 in TSCC cells blocked the cell growth and migration induced by the deletion of ATF3. Conversely, overexpression of either IFI6 or IFI27 counteracted the inhibition of TSCC cell growth and migration induced by the overexpression of ATF3. Finally, an in vivo study in mice confirmed those in vitro findings. Our study suggests that ATF3 plays an anti-tumor function in TSCCs through the negative regulation of its downstream targets, IFI6 and IFI27. Activating transcription factor 3 (ATF3), a stress response gene, has been shown to play either tumor promoting or tumor suppressing functions depending on the type of tumor cell and the stromal context. Here we discovered that ATF3 plays an anti-tumor role in tongue squamous cell carcinoma (TSCC) cells through the transcriptional suppression of its new downstream targets interferon alpha inducible proteins 6 (IFI6) and 27 (IFI27). This finding contributes to understanding how ATF3, a transcriptional repressor, can target specific downstream genes in different tumor cells to play anti-tumor or pro-tumor functions. A thorough understanding of ATF3 functions and its downstream signaling pathways provides a potential approach to develop new therapeutics for the treatment of tumors such as TSCCs.
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Affiliation(s)
- Lin Xu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong, China
- Department of Orthodontics, Liaocheng People’s Hospital, Liaocheng, Shandong, China
- Precision Biomedical Key Laboratory, Liaocheng People’s Hospital, Liaocheng, Shandong, China
| | - Tingjian Zu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
- School of Stomatology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai’an, Shandong, China
| | - Tao Li
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong, China
| | - Min Li
- Precision Biomedical Key Laboratory, Liaocheng People’s Hospital, Liaocheng, Shandong, China
| | - Jun Mi
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Fuxiang Bai
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Guanyi Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Jie Wen
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - Hui Li
- Department of Hematology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Cord Brakebusch
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, Copenhagen, Denmark
| | - Xuxia Wang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong, China
- * E-mail: (XW); (XW)
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
- * E-mail: (XW); (XW)
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11
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Joe Y, Chen Y, Park J, Kim HJ, Rah SY, Ryu J, Cho GJ, Choi HS, Ryter SW, Park JW, Kim UH, Chung HT. Cross-talk between CD38 and TTP Is Essential for Resolution of Inflammation during Microbial Sepsis. Cell Rep 2020; 30:1063-1076.e5. [PMID: 31995750 DOI: 10.1016/j.celrep.2019.12.090] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 10/12/2019] [Accepted: 12/24/2019] [Indexed: 12/11/2022] Open
Abstract
The resolution phase of acute inflammation is essential for tissue homeostasis, yet the underlying mechanisms remain unclear. We demonstrate that resolution of inflammation involves interactions between CD38 and tristetraprolin (TTP). During the onset of acute inflammation, CD38 levels are increased, leading to the production of Ca2+-signaling messengers, nicotinic acid adenine dinucleotide phosphate (NAADP), ADP ribose (ADPR), and cyclic ADPR (cADPR) from NAD(P)+. To initiate the onset of resolution, TTP expression is increased by the second messengers, NAADP and cADPR, which downregulate CD38 expression. The activation of TTP by Sirt1-dependent deacetylation, in response to increased NAD+ levels, suppresses the acute inflammatory response and decreases Rheb expression, inhibits mTORC1, and induces autophagolysosomes for bacterial clearance. TTP may represent a mechanistic target of anti-inflammatory agents, such as carbon monoxide. TTP mediates crosstalk between acute inflammation and autophagic clearance of bacteria from damaged tissue in the resolution of inflammation during sepsis.
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Affiliation(s)
- Yeonsoo Joe
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Yingqing Chen
- National Creative Research Laboratory for Ca(2+) signaling Network, Chonbuk National University Medical School, Jeonju 54907, Korea; Dalian University Medical College, Dalian 116622, China
| | - Jeongmin Park
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Hyo Jeong Kim
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - So-Young Rah
- National Creative Research Laboratory for Ca(2+) signaling Network, Chonbuk National University Medical School, Jeonju 54907, Korea
| | - Jinhyun Ryu
- Department of Anatomy, School of Medicine and Institute of Health Sciences, Gyeongsang National University, Jinju 52728, Korea
| | - Gyeong Jae Cho
- Department of Anatomy, School of Medicine and Institute of Health Sciences, Gyeongsang National University, Jinju 52728, Korea
| | - Hye-Seon Choi
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Stefan W Ryter
- Joan and Sanford I. Weill Department of Medicine, Division of Pulmonary and Critical Care Medicine, Weill Cornell Medical Center, New York, NY 10065, USA
| | - Jeong Woo Park
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea
| | - Uh-Hyun Kim
- National Creative Research Laboratory for Ca(2+) signaling Network, Chonbuk National University Medical School, Jeonju 54907, Korea.
| | - Hun Taeg Chung
- School of Biological Sciences, University of Ulsan, Ulsan 44610, Korea.
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12
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Zhang Q, Wen J, Liu C, Ma C, Bai F, Leng X, Chen Z, Xie Z, Mi J, Wu X. Early-stage bilayer tissue-engineered skin substitute formed by adult skin progenitor cells produces an improved skin structure in vivo. Stem Cell Res Ther 2020; 11:407. [PMID: 32948249 PMCID: PMC7501683 DOI: 10.1186/s13287-020-01924-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/27/2020] [Accepted: 09/03/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND In recent years, significant progress has been made in developing highly complex tissue-engineered skin substitutes (TESSs) for wound healing. However, the lack of skin appendages, such as hair follicles and sweat glands, and the time required, are two major limitations that hinder its broad application in the clinic. Therefore, it is necessary to develop a competent TESS in a short time to meet the needs for clinical applications. METHODS Adult scalp dermal progenitor cells and epidermal stem cells together with type I collagen as a scaffold material were used to reconstitute bilayer TESSs in vitro. TESSs at 4 different culture times (5, 9, 14, and 21 days) were collected and then grafted onto full-thickness wounds created in the dorsal skin of athymic nude/nude mice. The skin specimens formed from grafted TESSs were collected 4 and 8 weeks later and then evaluated for their structure, cell organization, differentiation status, vascularization, and formation of appendages by histological analysis, immunohistochemistry, and immunofluorescent staining. RESULTS Early-stage bilayer TESSs after transplantation had a better efficiency of grafting. A normal structure of stratified epidermis containing multiple differentiated layers of keratinocytes was formed in all grafts from both early-stage and late-stage TESSs, but higher levels of the proliferation marker Ki-67 and the epidermal progenitor marker p63 were found in the epidermis formed from early-stage TESSs. Interestingly, the transplantation of early-stage TESSs produced a thicker dermis that contained more vimentin- and CD31-positive cells, and importantly, hair follicle formation was only observed in the skin grafted from early-stage TESSs. Finally, early-stage TESSs expressed high levels of p63 but had low expression levels of genes involved in the activation of the apoptotic pathway compared to the late-stage TESSs in vitro. CONCLUSIONS Early-stage bilayer TESSs reconstituted from skin progenitor cells contained more competent cells with less activation of the apoptotic pathway and produced a better skin structure, including hair follicles associated with sebaceous glands, after transplantation, which should potentially provide better wound healing when applied in the clinic in the future.
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Affiliation(s)
- Qun Zhang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
| | - Jie Wen
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, China
| | - Chang Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
| | - Chuan Ma
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
| | - Fuxiang Bai
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
| | - Xue Leng
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
| | - Zhihong Chen
- Qilu Children's Hospital of Shandong University, Jinan, China
| | - Zhiwei Xie
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
- Department of Stomatology, Shengli Oilfield Center Hospital, Dongying, Shandong, China
| | - Jun Mi
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No.44-1 Wenhua Road West, Jinan, Shandong, China.
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13
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Li X, Zhou Q, Wang S, Wang P, Li J, Xie Z, Liu C, Wen J, Wu X. Prolonged treatment with Y-27632 promotes the senescence of primary human dermal fibroblasts by increasing the expression of IGFBP-5 and transforming them into a CAF-like phenotype. Aging (Albany NY) 2020; 12:16621-16646. [PMID: 32843583 PMCID: PMC7485707 DOI: 10.18632/aging.103910] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/21/2020] [Indexed: 12/21/2022]
Abstract
The Rho-kinases (ROCK) inhibitor Y-27632 has been shown to promote the growth of epidermal cells, however, its potential effects on human dermal fibroblasts (HDFs) need to be clarified. Here we show that prolonged treatment of HDFs with Y-27632 decreased their growth by inducing senescence, which was associated with induction of the senescence markers p16 and p21, and downmodulation of the ERK pathways. The senescent HDFs induced by Y-27632 acquired a cancer-associated-fibroblast (CAF)-like phenotype to promote squamous cell carcinoma (SCC) cell growth in vitro. Expression of a newly identified target of Y-27632 by RNA-seq, insulin growth factor binding protein 5 (IGFBP-5), was dramatically increased after 24 h of treatment with Y-27632. Adding recombinant IGFBP-5 protein to the culture medium produced similar phenotypes of HDFs as did treatment with Y-27632, and knockdown of IGFBP-5 blocked the Y-27632-induced senescence. Furthermore, Y-27632 induced the expression of an IGFBP-5 upstream gene, GATA4, and knockdown of GATA4 also reduced the Y-27632-induced senescence. In summary, these results demonstrate for the first time that Y-27632 promotes cellular senescence in primary HDFs by inducing the expression of IGFBP-5 and that prolonged treatment with Y-27632 potentially transforms primary HDFs into CAF-like cells.
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Affiliation(s)
- Xiangyong Li
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Key Laboratory of Biotechnology and Biological Resource Utilization in Universities of Shandong and College of Life Science, Dezhou University, Dezhou, China
| | - Qian Zhou
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Shuangshuang Wang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Ping Wang
- Department of Outpatient Surgery, Qilu Hospital, Shandong University, Jinan, Shandong, China
| | - Juan Li
- Key Laboratory of Biotechnology and Biological Resource Utilization in Universities of Shandong and College of Life Science, Dezhou University, Dezhou, China
| | - Zhiwei Xie
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Department of Stomatology, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Chang Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Jie Wen
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
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14
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Zhou Q, Kim SH, Pérez-Lorenzo R, Liu C, Huang M, Dotto GP, Zheng B, Wu X. Phenformin Promotes Keratinocyte Differentiation via the Calcineurin/NFAT Pathway. J Invest Dermatol 2020; 141:152-163. [PMID: 32619504 DOI: 10.1016/j.jid.2020.05.114] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 03/30/2020] [Accepted: 05/01/2020] [Indexed: 12/19/2022]
Abstract
Phenformin is a drug in the biguanide class that was previously used to treat type 2 diabetes. We have reported the antitumor activities of phenformin to enhance the efficacy of BRAF-MAPK kinase-extracellular signal-regulated kinase pathway inhibition and to inhibit myeloid-derived suppressor cells in various melanoma models. Here we demonstrate that phenformin suppresses tumor growth and promotes keratinocyte differentiation in the 7,12-dimethylbenz[a]anthracene/12-O-tetradecanoylphorbol-13-acetate two-stage skin carcinogenesis mouse model. Moreover, phenformin enhances the suspension-induced differentiation of mouse and human keratinocytes. Mechanistically, phenformin induces the nuclear translocation of NFATc1 in keratinocytes in an AMPK-dependent manner. Pharmacologic or genetic inhibition of calcineurin and NFAT signaling reverses the effects of phenformin on keratinocyte differentiation. Taken together, our study reveals an antitumor activity of phenformin to promote keratinocyte differentiation that warrants future translational efforts to repurpose phenformin for the treatment of cutaneous squamous cell carcinomas.
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Affiliation(s)
- Qian Zhou
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China; Shandong Key Laboratory of Oral Tissue Regeneration, Jinan, China; Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China; Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Sun Hye Kim
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Rolando Pérez-Lorenzo
- Department of Dermatology, Columbia University Medical Center, New York, New York, USA
| | - Chang Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China; Shandong Key Laboratory of Oral Tissue Regeneration, Jinan, China; Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Man Huang
- Department of Mathematics and Statistics, Boston University, Boston, Massachusetts, USA
| | - Gian Paolo Dotto
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA; Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Bin Zheng
- Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China; Shandong Key Laboratory of Oral Tissue Regeneration, Jinan, China; Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China; Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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15
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Zhang Z, Guo M, Li Y, Shen M, Kong D, Shao J, Ding H, Tan S, Chen A, Zhang F, Zheng S. RNA-binding protein ZFP36/TTP protects against ferroptosis by regulating autophagy signaling pathway in hepatic stellate cells. Autophagy 2019; 16:1482-1505. [PMID: 31679460 DOI: 10.1080/15548627.2019.1687985] [Citation(s) in RCA: 230] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ferroptosis is a recently discovered form of programmed cell death, but its regulatory mechanisms remain poorly understood. Here, we show that the RNA-binding protein ZFP36/TTP (ZFP36 ring finger protein) plays a crucial role in regulating ferroptosis in hepatic stellate cells (HSCs). Upon exposure to ferroptosis-inducing compounds, the ubiquitin ligase FBXW7/CDC4 (F-box and WD repeat domain containing 7) decreased ZFP36 protein expression by recognizing SFSGLPS motif. FBXW7 plasmid contributed to classical ferroptotic events, whereas ZFP36 plasmid impaired FBXW7 plasmid-induced HSC ferroptosis. Interestingly, ZFP36 plasmid inhibited macroautophagy/autophagy activation by destabilizing ATG16L1 (autophagy related 16 like 1) mRNA. ATG16L1 plasmid eliminated the inhibitory action of ZFP36 plasmid on ferroptosis, and FBXW7 plasmid enhanced the effect of ATG16L1 plasmid on autophagy. Importantly, ZFP36 plasmid promoted ATG16L1 mRNA decay via binding to the AU-rich elements (AREs) within the 3'-untranslated region. The internal mutation of the ARE region abrogated the ZFP36-mediated ATG16L1 mRNA instability, and prevented ZFP36 plasmid-mediated ferroptosis resistance. In mice, treatment with erastin and sorafenib alleviated murine liver fibrosis by inducing HSC ferroptosis. HSC-specific overexpression of Zfp36 impaired erastin- or sorafenib-induced HSC ferroptosis. Noteworthy, we analyzed the effect of sorafenib on HSC ferroptosis in fibrotic patients with hepatocellular carcinoma receiving sorafenib monotherapy. Attractively, sorafenib monotherapy led to ZFP36 downregulation, ferritinophagy activation, and ferroptosis induction in human HSCs. Overall, these results revealed novel molecular mechanisms and signaling pathways of ferroptosis, and also identified ZFP36-autophagy-dependent ferroptosis as a potential target for the treatment of liver fibrosis. ABBREVIATIONS ARE: AU-rich elements; ATG: autophagy related; BECN1: beclin 1; CHX: cycloheximide; COL1A1: collagen type I alpha 1 chain; ELAVL1/HuR: ELAV like RNA binding protein 1; FBXW7/CDC4: F-box and WD repeat domain containing 7; FN1: fibronectin 1; FTH1: ferritin heavy chain 1; GPX4/PHGPx: glutathione peroxidase 4; GSH: glutathione; HCC: hepatocellular carcinoma; HSC: hepatic stellate cell; LSEC: liver sinusoidal endothelial cell; MAP1LC3A: microtubule associated protein 1 light chain 3 alpha; MDA: malondialdehyde; NCOA4: nuclear receptor coactivator 4; PTGS2/COX2: prostaglandin-endoperoxide synthase 2; RBP: RNA-binding protein; ROS: reactive oxygen species; SLC7A11/xCT: solute carrier family 7 member 11; SQSTM1/p62: sequestosome 1; TNF: tumor necrosis factor; TP53/p53: tumor protein p53; UTR: untranslated region; ZFP36/TTP: ZFP36 ring finger protein.
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Affiliation(s)
- Zili Zhang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China
| | - Mei Guo
- Department of Pathogenic biology and Immunology, Medical School, Southeast University , Nanjing, China
| | - Yujia Li
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China
| | - Min Shen
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China
| | - Desong Kong
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China
| | - Jiangjuan Shao
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China
| | - Hai Ding
- Department of Integrated TCM and Western Medicine, Nanjing Hospital Affiliated to Nanjing University of Chinese Medicine , Nanjing, China
| | - Shanzhong Tan
- Department of Integrated TCM and Western Medicine, Nanjing Hospital Affiliated to Nanjing University of Chinese Medicine , Nanjing, China
| | - Anping Chen
- Department of Pathology, School of Medicine, Saint Louis University , St Louis, USA
| | - Feng Zhang
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine , Nanjing, China
| | - Shizhong Zheng
- Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, Nanjing University of Chinese Medicine , Nanjing, China.,Jiangsu Key Laboratory of Therapeutic Material of Chinese Medicine, Nanjing University of Chinese Medicine , Nanjing, China
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Zhang X, Qin J, Xie Z, Liu C, Su Y, Chen Z, Zhou Q, Ma C, Liu G, Paus R, Guo J, Wu X. Y-27632 preserves epidermal integrity in a human skin organ-culture (hSOC) system by regulating AKT and ERK signaling pathways. J Dermatol Sci 2019; 96:99-109. [PMID: 31718896 DOI: 10.1016/j.jdermsci.2019.10.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND The human skin organ culture (hSOC) developed a century ago has been widely used to study various aspects of human skin development, differentiation, function, disease as well as skin appendages biology, however, maintaining the integrity of epidermal structure in long-term culture, has remained a challenge. OBJECTIVES Here we tried to establish a culture system using supplemented William's E medium in the presence of a ROCK inhibitor Y-27632 to maintain epidermal architecture in the long-term hSOC and to investigate the underlying mechanisms. METHODS Human breast skins, cut into 5 mm × 5 mm pieces, were cultured in supplemented William's E medium in the presence of 30μM Y-27632. The cultured skin tissues were collected at different time points for analysis of epidermal cell proliferation and differentiation by real time qRT-PCR and immunofluorescence (IF) staining. The keratinocyte suspension assay and in vivo treatment of Y-27632 on mouse were also carried out to study that the regulation of Y-27632 on keratinocyte proliferation and differentiation. RESULTS We found Y-27632 not only enhanced both basal cell proliferation and expression of suprabasal cell differentiation markers, but also maintained the balance of keratinocyte proliferation and differentiation through activation of AKT pathways on one hand and inhibition of ERK pathways on the other hand. The AKT inhibitor MK-2206 blocked the epidermal preservation effect of Y-27632, while the MEK/ERK inhibitor U0126 enhanced the preservation of epidermal structure in the hSOC. CONCLUSIONS Y-227632 can maintain skin epidermal integrity through regulation of AKT and ERK activity in the hSOC.
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Affiliation(s)
- Xuan Zhang
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China; Department of Stomatology, The Second Hospital of Shandong University, Jinan, China
| | - Jing Qin
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Zhiwei Xie
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China; Department of Stomatology, Shengli Oilfield Central Hospital, Dongying, Shandong, China
| | - Chang Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Yiqun Su
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Zhihong Chen
- Department of Urinary Surgery, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Qian Zhou
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Chuan Ma
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Guanyi Liu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Ralf Paus
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL, USA; Centre for Dermatology Research, University of Manchester and NIHR Biomedical Research Centre, Manchester, UK
| | - Jing Guo
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.
| | - Xunwei Wu
- Department of Tissue Engineering and Regeneration, School and Hospital of Stomatology, Shandong University & Shandong Provincial Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.
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