1
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Xu F, Gao W, Zhang M, Zhang F, Sun X, Wu B, Liu Y, Li X, Li H. Diagnostic implications of ubiquitination-related gene signatures in Alzheimer's disease. Sci Rep 2024; 14:10728. [PMID: 38730027 PMCID: PMC11087467 DOI: 10.1038/s41598-024-61363-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 05/06/2024] [Indexed: 05/12/2024] Open
Abstract
The purpose of this study was to explore the diagnostic implications of ubiquitination-related gene signatures in Alzheimer's disease. In this study, we first collected 161 samples from the GEO database (including 87 in the AD group and 74 in the normal group). Subsequently, through differential expression analysis and the iUUCD 2.0 database, we obtained 3450 Differentially Expressed Genes (DEGs) and 806 Ubiquitin-related genes (UbRGs). After taking the intersection, we obtained 128 UbR-DEGs. Secondly, by conducting GO and KEGG enrichment analysis on these 128 UbR-DEGs, we identified the main molecular functions and biological pathways related to AD. Furthermore, through the utilization of GSEA analysis, we have gained insight into the enrichment of functions and pathways within both the AD and normal groups. Further, using lasso regression analysis and cross-validation techniques, we identified 22 characteristic genes associated with AD. Subsequently, we constructed a logistic regression model and optimized it, resulting in the identification of 6 RUbR-DEGs: KLHL21, WDR82, DTX3L, UBTD2, CISH, and ATXN3L. In addition, the ROC result showed that the diagnostic model we built has excellent accuracy and reliability in identifying AD patients. Finally, we constructed a lncRNA-miRNA-mRNA (competing endogenous RNA, ceRNA) regulatory network for AD based on six RUbR-DEGs, further elucidating the interaction between UbRGs and lncRNA, miRNA. In conclusion, our findings will contribute to further understanding of the molecular pathogenesis of AD and provide a new perspective for AD risk prediction, early diagnosis and targeted therapy in the population.
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Affiliation(s)
- Fei Xu
- Heilongjiang Provincial Administration of Traditional Chinese Medicine, Harbin, 150036, Heilongjiang, China
| | - Wei Gao
- Jiangsu College of Nursing, Huaian, 223003, Jiangsu, China
- Heilongjiang University of Chinese Medicine, Harbin, 150040, Heilongjiang, China
| | - Miao Zhang
- Heilongjiang University of Chinese Medicine, Harbin, 150040, Heilongjiang, China.
| | - Fuyue Zhang
- Heilongjiang University of Chinese Medicine, Harbin, 150040, Heilongjiang, China
| | - XiaoFei Sun
- Jiangsu College of Nursing, Huaian, 223003, Jiangsu, China
| | - Bao Wu
- Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, Fujiang, China
| | - Yali Liu
- Shanghai University of Sport, Shanghai, 200438, China
| | - Xue Li
- Heilongjiang University of Chinese Medicine, Harbin, 150040, Heilongjiang, China
| | - Honglin Li
- Heilongjiang University of Chinese Medicine, Harbin, 150040, Heilongjiang, China.
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2
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Wu DD, Lau ATY, Xu YM, Reinders-Luinge M, Koncz M, Kiss A, Timens W, Rots MG, Hylkema MN. Targeted epigenetic silencing of UCHL1 expression suppresses collagen-1 production in human lung epithelial cells. Epigenetics 2023; 18:2175522. [PMID: 38016026 PMCID: PMC9980648 DOI: 10.1080/15592294.2023.2175522] [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: 09/02/2022] [Revised: 12/17/2022] [Accepted: 01/11/2023] [Indexed: 02/24/2023] Open
Abstract
Ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) is highly expressed in smokers, but little is known about the molecular mechanism of UCHL1 in airway epithelium and its possible role in affecting extracellular matrix (ECM) remodelling in the underlying submucosa. Since cigarette smoking is a major cause of lung diseases, we studied its effect on UCHL1 expression and DNA methylation patterns in human bronchial epithelial cells, obtained after laser capture micro-dissection (LCM) or isolated from residual tracheal/main stem bronchial tissue. Targeted regulation of UCHL1 expression via CRISPR/dCas9 based-epigenetic editing was used to explore the function of UCHL1 in lung epithelium. Our results show that cigarette smoke extract (CSE) stimulated the expression of UCHL1 in vitro. The methylation status of the UCHL1 gene was negatively associated with UCHL1 transcription in LCM-obtained airway epithelium at specific sites. Treatment with a UCHL1 inhibitor showed that the TGF-β1-induced upregulation of the ECM gene COL1A1 can be prevented by the inhibition of UCHL1 activity in cell lines. Furthermore, upon downregulation of UCHL1 by epigenetic editing using CRISPR/dCas-EZH2, mRNA expression of COL1A1 and fibronectin was reduced. In conclusion, we confirmed higher UCHL1 expression in current smokers compared to non- and ex-smokers, and induced downregulation of UCHL1 by epigenetic editing. The subsequent repression of genes encoding ECM proteins suggest a role for UCHL1 as a therapeutic target in fibrosis-related disease.
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Affiliation(s)
- Dan-Dan Wu
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, P. R. China
| | - Andy T. Y. Lau
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, P. R. China
| | - Yan-Ming Xu
- Laboratory of Cancer Biology and Epigenetics, Department of Cell Biology and Genetics, Shantou University Medical College, Shantou, P. R. China
| | - Marjan Reinders-Luinge
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mihaly Koncz
- Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network (ELKH), Szeged, Hungary
- Doctoral School of Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Antal Kiss
- Institute of Biochemistry, Biological Research Centre, Eötvös Loránd Research Network (ELKH), Szeged, Hungary
| | - Wim Timens
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Marianne G. Rots
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Machteld N. Hylkema
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- GRIAC Research Institute, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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3
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Cai F, Song B, Yang Y, Liao H, Li R, Wang Z, Cao R, Chen H, Wang J, Wu Y, Zhang Y, Song W. USP25 contributes to defective neurogenesis and cognitive impairments. FASEB J 2023; 37:e22971. [PMID: 37171286 DOI: 10.1096/fj.202300057r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 03/25/2023] [Accepted: 05/01/2023] [Indexed: 05/13/2023]
Abstract
Both Down syndrome (DS) individuals and animal models exhibit hypo-cellularity in hippocampus and neocortex indicated by enhanced neuronal death and compromised neurogenesis. Ubiquitin-specific peptidase 25 (USP25), a human chromosome 21 (HSA21) gene, encodes for a deubiquitinating enzyme overexpressed in DS patients. Dysregulation of USP25 has been associated with Alzheimer's phenotypes in DS, but its role in defective neurogenesis in DS has not been defined. In this study, we found that USP25 upregulation impaired cell cycle regulation during embryonic neurogenesis and cortical development. Overexpression of USP25 in hippocampus promoted the neural stem cells to glial cell fates and suppressed neuronal cell fate by altering the balance between cyclin D1 and cyclin D2, thus reducing neurogenesis in the hippocampus. USP25-Tg mice showed increased anxiety/depression-like behaviors and learning and memory deficits. These results suggested that USP25 overexpression resulted in defective neurogenesis and cognitive impairments, which could contribute to the pathogenesis of DS. USP25 may be a potential pharmaceutical target for DS.
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Affiliation(s)
- Fang Cai
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Townsend Family Laboratories, Department of Psychiatry, Graduate Program in Neuroscience, Djavad Mowafaghian Centre for Brain Health, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Beibei Song
- Townsend Family Laboratories, Department of Psychiatry, Graduate Program in Neuroscience, Djavad Mowafaghian Centre for Brain Health, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Yi Yang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Haikang Liao
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ran Li
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Zhao Wang
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Ruixue Cao
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Huaqiu Chen
- National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Juelu Wang
- Townsend Family Laboratories, Department of Psychiatry, Graduate Program in Neuroscience, Djavad Mowafaghian Centre for Brain Health, The University of British Columbia, Vancouver, British Columbia, Canada
| | - Yili Wu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Yun Zhang
- National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Weihong Song
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, Institute of Aging, School of Mental Health, Affiliated Kangning Hospital, The Second Affiliated Hospital, Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
- Townsend Family Laboratories, Department of Psychiatry, Graduate Program in Neuroscience, Djavad Mowafaghian Centre for Brain Health, The University of British Columbia, Vancouver, British Columbia, Canada
- National Clinical Research Center for Geriatric Disorders, Xuanwu Hospital, Capital Medical University, Beijing, China
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4
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Fan H, Ren Z, Xu C, Wang H, Wu Z, Rehman ZU, Wu S, Sun MA, Bao W. Chromatin Accessibility and Transcriptomic Alterations in Murine Ovarian Granulosa Cells upon Deoxynivalenol Exposure. Cells 2021; 10:2818. [PMID: 34831041 PMCID: PMC8616273 DOI: 10.3390/cells10112818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/12/2021] [Accepted: 10/19/2021] [Indexed: 11/26/2022] Open
Abstract
Deoxynivalenol (DON) is a common environmental toxin that is secreted by fusarium fungi that frequently contaminates feedstuff and food. While the detrimental effects of DON on human and animal reproductive systems have been well recognized, the underlying mechanism remains poorly understood. Ovarian granulosa cells (GCs), which surround oocytes, are crucial for regulating oocyte development, mainly through the secretion of hormones such as estrogen and progesterone. Using an in vitro model of murine GCs, we characterized the cytotoxic effects of DON and profiled genome-wide chromatin accessibility and transcriptomic alterations after DON exposure. Our results suggest that DON can induce decreased viability and growth, increased apoptosis rate, and disrupted hormone secretion. In total, 2533 differentially accessible loci and 2675 differentially expressed genes were identified that were associated with Hippo, Wnt, steroid biosynthesis, sulfur metabolism, and inflammation-related pathways. DON-induced genes usually have a concurrently increased occupancy of active histone modifications H3K4me3 and H3K27ac in their promoters. Integrative analyses identified 35 putative directly affected genes including Adrb2 and Fshr, which are key regulators of follicular growth, and revealed that regions with increased chromatin accessibility are enriched with the binding motifs for NR5A1 and NR5A2, which are important for GCs. Moreover, DON-induced inflammatory response is due to the activation of the NF-κB and MAPK signaling pathways. Overall, our results provide novel insights into the regulatory elements, genes, and key pathways underlying the response of ovarian GCs to DON cytotoxicity.
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Affiliation(s)
- Hairui Fan
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
| | - Zhanshi Ren
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
| | - Chao Xu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
| | - Haifei Wang
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Zhengchang Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
| | - Zia ur Rehman
- Faculty of Animal Husbandry and Veterinary Sciences, College of Veterinary Sciences, The University of Agriculture Peshawar, Peshawar 25000, Pakistan;
| | - Shenglong Wu
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
| | - Ming-an Sun
- Institute of Comparative Medicine, College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China
| | - Wenbin Bao
- Key Laboratory for Animal Genetics, Breeding, Reproduction and Molecular Design, College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China; (H.F.); (Z.R.); (C.X.); (H.W.); (Z.W.); (S.W.)
- Joint International Research Laboratory of Agriculture & Agri-Product Safety, The Ministry of Education of China, Yangzhou University, Yangzhou 225009, China
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5
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Sun L, Zou LX, Han YC, Zhu DD, Chen T, Wang J. Role of A20/TNFAIP3 deficiency in lupus nephritis in MRL/lpr mice. Clin Exp Nephrol 2019; 24:107-118. [PMID: 31811410 DOI: 10.1007/s10157-019-01826-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 11/20/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND The activation of the nuclear factor-κB (NF-κB) signaling pathway gives rise to inflammation in the pathogenesis of lupus nephritis (LN), with A20 serving as a negative feedback regulator and ubiquitin C‑terminal hydrolase L1 (UCH-L1) acting as a downstream target protein. However, their roles in the mechanism of LN remain undetermined. METHODS In the present study, the expression of A20 and UCH-L1, the activity of NF-κB and ubiquitin-proteasome system (UPS) were measured in MRL/lpr mice and A20 gene silenced podocytes. The severity of podocyte injury and immune complex deposits were detected by transmission electron microscopy. RESULTS The in vivo experiments revealed that A20 failed to terminate the activation of NF-κB, which was accompanied by UCH-L1 overexpression, ubiquitin accumulation, and glomerular injury in LN mice. Immunosuppression therapy did improve LN progression by attenuating A20 deficiency. In vitro experiments confirmed that tumor necrosis factor-α induced NF-κB activation, which led to UCH-L1 overexpression, UPS impairment, the upregulation of desmin and the downregulation of synaptopodin in A20 gene silenced podocytes. CONCLUSION Thus, the results of the present study suggest that A20 regulates UCH-L1 expression via the NF-κB signaling pathway and A20 deficiency might play an important role in LN pathogenesis. Therefore, the A20 protein may serve as a promising therapeutic target for LN.
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Affiliation(s)
- Ling Sun
- Department of Nephrology, Xuzhou Central Hospital, Medical College of Southeast University, Xuzhou, Jiangsu, People's Republic of China.
| | - Lu-Xi Zou
- Zhejiang University, Hangzhou, Zhejiang, People's Republic of China.
| | - Yu-Chen Han
- Institute of Nephrology, Zhongda Hospital, Medical College of Southeast University, Jiangsu, People's Republic of China
| | - Dong-Dong Zhu
- Institute of Nephrology, Zhongda Hospital, Medical College of Southeast University, Jiangsu, People's Republic of China
| | - Ting Chen
- Department of Nephrology, Xuzhou Central Hospital, Medical College of Southeast University, Xuzhou, Jiangsu, People's Republic of China
| | - Jie Wang
- Department of Pathology, Xuzhou Central Hospital, Medical College of Southeast University, Xuzhou, Jiangsu, People's Republic of China
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6
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Guglielmotto M, Repetto IE, Monteleone D, Vasciaveo V, Franchino C, Rinaldi S, Tabaton M, Tamagno E. Stroke and Amyloid-β Downregulate TREM-2 and Uch-L1 Expression that Synergistically Promote the Inflammatory Response. J Alzheimers Dis 2019; 71:907-920. [PMID: 31450501 DOI: 10.3233/jad-190494] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Neuroinflammation is involved in the pathogenesis of Alzheimer's disease, and the transcription factor NF-κB is a player in this event. We found here that the ischemic damage alone or in association with Aβ1-42 activates the NF-κB pathway, induces an increase of BACE1 and a parallel inhibition of Uch-L1 and TREM2, both in vitro and in vivo, in Tg 5XFAD and in human brains of sporadic AD. This mechanism creates a synergistic loop that fosters inflammation. We also demonstrated a significant protection exerted by the restoration of Uch-L1 activity. The rescue of the enzyme is able to abolish the decrease of TREM2 and the parameters of neuroinflammation.
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Affiliation(s)
- Michela Guglielmotto
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | | | - Debora Monteleone
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Valeria Vasciaveo
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Claudio Franchino
- Department of Drug Science and Technology, University of Torino, Torino, Italy
| | - Sara Rinaldi
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Massimo Tabaton
- Department of Internal Medicine and Medical Specialties (DIMI), Unit of Geriatric Medicine, University of Genova, Genova, Italy
| | - Elena Tamagno
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
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7
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Bardin P, Marchal-Duval E, Sonneville F, Blouquit-Laye S, Rousselet N, Le Rouzic P, Corvol H, Tabary O. Small RNA and transcriptome sequencing reveal the role of miR-199a-3p in inflammatory processes in cystic fibrosis airways. J Pathol 2018; 245:410-420. [DOI: 10.1002/path.5095] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 04/11/2018] [Accepted: 04/26/2018] [Indexed: 01/11/2023]
Affiliation(s)
- Pauline Bardin
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
| | - Emmeline Marchal-Duval
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
| | - Florence Sonneville
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
| | - Sabine Blouquit-Laye
- Université de Versailles Saint Quentin en Yvelines; UFR des Sciences de la Santé, UMR 1173; Montigny-Le-Bretonneux France
| | - Nathalie Rousselet
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
| | - Philippe Le Rouzic
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
| | - Harriet Corvol
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
- Hôpital Trousseau; Paediatric Respiratory Department, AP-HP; Paris France
| | - Olivier Tabary
- Sorbonne Université, UPMC Univ Paris 06, INSERM, Centre de Recherche Saint Antoine (CRSA); Paris France
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8
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Matuszczak E, Weremijewicz A, Komarowska M, Sankiewicz A, Markowska D, Debek W, Gorodkiewicz E, Milewski R, Hermanowicz A. Immunoproteasome in the Plasma of Pediatric Patients With Moderate and Major Burns, and Its Correlation With Proteasome and UCHL1 Measured by SPR Imaging Biosensors. J Burn Care Res 2018. [DOI: 10.1093/jbcr/iry011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ewa Matuszczak
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | - Artur Weremijewicz
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | - Marta Komarowska
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | - Anna Sankiewicz
- Department of Electrochemistry, University of Bialystok, Poland
| | - Diana Markowska
- Department of Electrochemistry, University of Bialystok, Poland
| | - Wojciech Debek
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
| | | | - Robert Milewski
- Department of Statistics, Medical University of Bialystok, Poland
| | - Adam Hermanowicz
- Department of Pediatric Surgery, Medical University of Bialystok, Poland
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9
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Shi Y, Li J, Chen C, Xia Y, Li Y, Zhang P, Xu Y, Li T, Zhou W, Song W. Ketamine Modulates Zic5 Expression via the Notch Signaling Pathway in Neural Crest Induction. Front Mol Neurosci 2018; 11:9. [PMID: 29472839 PMCID: PMC5810301 DOI: 10.3389/fnmol.2018.00009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/08/2018] [Indexed: 12/23/2022] Open
Abstract
Ketamine is a potent dissociative anesthetic and the most commonly used illicit drug. Many addicts are women at childbearing age. Although ketamine has been extensively studied as a clinical anesthetic, its effects on embryonic development are poorly understood. Here, we applied the Xenopus model to study the effects of ketamine on development. We found that exposure to ketamine from pre-gastrulation (stage 7) to early neural plate (stage 13.5) resulted in disruption of neural crest (NC) derivatives. Ketamine exposure did not affect mesoderm development as indicated by the normal expression of Chordin, Xbra, Wnt8, and Fgf8. However, ketamine treatment significantly inhibited Zic5 and Slug expression at early neural plate stage. Overexpression of Zic5 rescued ketamine-induced Slug inhibition, suggesting the blockage of NC induction was mediated by Zic5. Furthermore, we found Notch signaling was altered by ketamine. Ketamine inhibited the expression of Notch targeted genes including Hes5.2a, Hes5.2b, and ESR1 and ketamine-treated embryos exhibited Notch-deficient somite phenotypes. A 15 bp core binding element upstream of Zic5 was induced by Notch signaling and caused transcriptional activation. These results demonstrated that Zic5 works as a downstream target gene of Notch signaling in Xenopus NC induction. Our study provides a novel teratogenic mechanism whereby ketamine disrupts NC induction via targeting a Notch-Zic5 signaling pathway.
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Affiliation(s)
- Yu Shi
- Department of Clinical Laboratory, Children's Hospital of Chongqing Medical University, Chongqing, China.,Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Jiejing Li
- Department of Clinical Laboratory, The Affiliated Hospital of KMUST, Medical School, Kunming University of Science and Technology, Kunming, China
| | - Chunjiang Chen
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yongwu Xia
- Department of Clinical Laboratory, Children's Hospital of Chongqing Medical University, Chongqing, China.,Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yanxi Li
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Pan Zhang
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,Department of Anesthesiology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Ying Xu
- Department of Anesthesiology, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Tingyu Li
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Weihui Zhou
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Weihong Song
- Chongqing City Key Lab of Translational Medical Research in Cognitive Development and Learning and Memory Disorders and Ministry of Education Key Lab of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,Townsend Family Laboratories, Department of Psychiatry, The University of British Columbia, Vancouver, BC, Canada
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10
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Guglielmotto M, Monteleone D, Vasciaveo V, Repetto IE, Manassero G, Tabaton M, Tamagno E. The Decrease of Uch-L1 Activity Is a Common Mechanism Responsible for Aβ 42 Accumulation in Alzheimer's and Vascular Disease. Front Aging Neurosci 2017; 9:320. [PMID: 29033830 PMCID: PMC5627155 DOI: 10.3389/fnagi.2017.00320] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 09/19/2017] [Indexed: 01/06/2023] Open
Abstract
Alzheimer’s disease (AD) is a multifactorial pathology causing common brain spectrum disorders in affected patients. These mixed neurological disorders not only include structural AD brain changes but also cerebrovascular lesions. The main aim of the present issue is to find the factors shared by the two pathologies. The decrease of ubiquitin C-terminal hydrolase L1 (Uch-L1), a major neuronal enzyme involved in the elimination of misfolded proteins, was observed in ischemic injury as well as in AD, but its role in the pathogenesis of AD is far to be clear. In this study we demonstrated that Uch-L1 inhibition induces BACE1 up-regulation and increases neuronal and apoptotic cell death in control as well as in transgenic AD mouse model subjected to Bengal Rose, a light-sensitive dye inducing that induces a cortical infarction through photo-activation. Under the same conditions we also found a significant activation of NF-κB. Thus, the restoration of Uch-L1 was able to completely prevent both the increase in BACE1 protein levels and the amount of cell death. Our data suggest that the Uch-L1-mediated BACE1 up-regulation could be an important mechanism responsible for Aβ peptides accumulation in vascular injury and indicate that the modulation of the activity of this enzyme could provide new therapeutic strategies in AD.
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Affiliation(s)
- Michela Guglielmotto
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute of Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Debora Monteleone
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute of Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Valeria Vasciaveo
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute of Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Ivan Enrico Repetto
- Neuroscience Institute of Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy.,Department of Neuroscience, Université de Lausanne, Lausanne, Switzerland
| | - Giusi Manassero
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute of Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
| | - Massimo Tabaton
- Department of Internal Medicine and Medical Specialties (DIMI), Unit of Geriatric Medicine, University of Genova, Genova, Italy
| | - Elena Tamagno
- Department of Neuroscience, University of Torino, Torino, Italy.,Neuroscience Institute of Cavalieri Ottolenghi Foundation (NICO), University of Torino, Torino, Italy
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11
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Zhang D, Han S, Wang S, Luo Y, Zhao L, Li J. cPKCγ-mediated down-regulation of UCHL1 alleviates ischaemic neuronal injuries by decreasing autophagy via ERK-mTOR pathway. J Cell Mol Med 2017; 21:3641-3657. [PMID: 28726275 PMCID: PMC5706506 DOI: 10.1111/jcmm.13275] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 05/14/2017] [Indexed: 02/06/2023] Open
Abstract
Stroke is one of the leading causes of death in the world, but its underlying mechanisms remain unclear. Both conventional protein kinase C (cPKC)γ and ubiquitin C-terminal hydrolase L1 (UCHL1) are neuron-specific proteins. In the models of 1-hr middle cerebral artery occlusion (MCAO)/24-hr reperfusion in mice and 1-hr oxygen-glucose deprivation (OGD)/24-hr reoxygenation in cortical neurons, we found that cPKCγ gene knockout remarkably aggravated ischaemic injuries and simultaneously increased the levels of cleaved (Cl)-caspase-3 and LC3-I proteolysis product LC3-II, and the ratio of TUNEL-positive cells to total neurons. Moreover, cPKCγ gene knockout could increase UCHL1 protein expression via elevating its mRNA level regulated by the nuclear factor κB inhibitor alpha (IκB-α)/nuclear factor κB (NF-κB) pathway in cortical neurons. Both inhibitor and shRNA of UCHL1 significantly reduced the ratio of LC3-II/total LC3, which contributed to neuronal survival after ischaemic stroke, but did not alter the level of Cl-caspase-3. In addition, UCHL1 shRNA reversed the effect of cPKCγ on the phosphorylation levels of mTOR and ERK rather than that of AMPK and GSK-3β. In conclusion, our results suggest that cPKCγ activation alleviates ischaemic injuries of mice and cortical neurons through inhibiting UCHL1 expression, which may negatively regulate autophagy through ERK-mTOR pathway.
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Affiliation(s)
- Dan Zhang
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Song Han
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Shizun Wang
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Yanlin Luo
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Li Zhao
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
| | - Junfa Li
- Department of Neurobiology and Center of Stroke, Beijing Institute for Brain Disorders, Capital Medical University, Beijing, China
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12
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Baghel MS, Thakur MK. Differential proteome profiling in the hippocampus of amnesic mice. Hippocampus 2017; 27:845-859. [PMID: 28449397 DOI: 10.1002/hipo.22735] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 04/06/2017] [Accepted: 04/12/2017] [Indexed: 12/20/2022]
Abstract
Amnesia or memory loss is associated with brain aging and several neurodegenerative pathologies including Alzheimer's disease (AD). This can be induced by a cholinergic antagonist scopolamine but the underlying molecular mechanism is poorly understood. This study of proteome profiling in the hippocampus could provide conceptual insights into the molecular mechanisms involved in amnesia. To reveal this, mice were administered scopolamine to induce amnesia and memory impairment was validated by novel object recognition test. Using two-dimensional gel electrophoresis coupled with MALDI-MS/MS, we have analyzed the hippocampal proteome and identified 18 proteins which were differentially expressed. Out of these proteins, 11 were downregulated and 7 were upregulated in scopolamine-treated mice as compared to control. In silico analysis showed that the majority of identified proteins are involved in metabolism, catalytic activity, and cytoskeleton architectural functions. STRING interaction network analysis revealed that majority of identified proteins exhibit common association with Actg1 cytoskeleton and Vdac1 energy transporter protein. Furthermore, interaction map analysis showed that Fascin1 and Coronin 1b individually interact with Actg1 and regulate the actin filament dynamics. Vdac1 was significantly downregulated in amnesic mice and showed interaction with other proteins in interaction network. Therefore, we silenced Vdac1 in the hippocampus of normal young mice and found similar impairment in recognition memory of Vdac1 silenced and scopolamine-treated mice. Thus, these findings suggest that Vdac1-mediated disruption of energy metabolism and cytoskeleton architecture might be involved in scopolamine-induced amnesia.
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Affiliation(s)
- Meghraj Singh Baghel
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Centre of Advanced Study, Banaras Hindu University, Varanasi, 221005, India
| | - Mahendra Kumar Thakur
- Department of Zoology, Biochemistry and Molecular Biology Laboratory, Centre of Advanced Study, Banaras Hindu University, Varanasi, 221005, India
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13
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Shi Z, Chen T, Yao Q, Zheng L, Zhang Z, Wang J, Hu Z, Cui H, Han Y, Han X, Zhang K, Hong W. The circular RNA ciRS-7 promotes APP and BACE1 degradation in an NF-κB-dependent manner. FEBS J 2017; 284:1096-1109. [PMID: 28296235 DOI: 10.1111/febs.14045] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/18/2017] [Accepted: 02/16/2017] [Indexed: 12/15/2022]
Abstract
The aberrant accumulation of β-amyloid peptide (Aβ) in the brain is a key feature of Alzheimer's disease (AD), and enhanced cleavage of β-amyloid precursor protein (APP) by β-site APP-cleaving enzyme 1 (BACE1) has a major causative role in AD. Despite their prominence in AD pathogenesis, the regulation of BACE1 and APP is incompletely understood. In this study, we report that the circular RNA circular RNA sponge for miR-7 (ciRS-7) has an important role in regulating BACE1 and APP protein levels. Previous studies have shown that ciRS-7, which is highly expressed in the human brain, is down-regulated in the brain of people with AD but the relevance of this finding was not clear. We have found that ciRS-7 is not involved in the regulation of APP and BACE1 gene expression, but instead reduces the protein levels of APP and BACE1 by promoting their degradation via the proteasome and lysosome. Consequently, overexpression of ciRS-7 reduces the generation of Aβ, indicating a potential neuroprotective role of ciRS-7. Our data also suggest that ciRS-7 modulates APP and BACE1 levels in a nuclear factor-κB (NF-κB)-dependent manner: ciRS-7 expression inhibits translation of NF-κB and induces its cytoplasmic localization, thus derepressing expression of UCHL1, which promotes APP and BACE1 degradation. Additionally, we demonstrated that APP reduces the level of ciRS-7, revealing a mutual regulation of ciRS-7 and APP. Taken together, our data provide a molecular mechanism implicating reduced ciRS-7 expression in AD, suggesting that ciRS-7 may represent a useful target in the development of therapeutic strategies for AD.
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Affiliation(s)
- Zhemin Shi
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Ting Chen
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Qingbin Yao
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Lina Zheng
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Zhen Zhang
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Jingzhao Wang
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Zhimei Hu
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Hongmei Cui
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Yawei Han
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Xiaohui Han
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Kun Zhang
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
| | - Wei Hong
- Department of Histology and Embryology, School of Basic Medical Sciences, Tianjin Medical University, China
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14
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Matuszczak E, Tylicka M, Dębek W, Sankiewicz A, Gorodkiewicz E, Hermanowicz A. Overexpression of ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) in serum of children after thermal injury. Adv Med Sci 2017; 62:83-86. [PMID: 28193576 DOI: 10.1016/j.advms.2016.07.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 06/21/2016] [Accepted: 07/26/2016] [Indexed: 02/04/2023]
Abstract
PURPOSE The study aims to determinate concentrations of ubiquitin C-terminal hydrolase 1 (UCHL1), which hydrolyzes amino acids from ubiquitin and cleave di-ubiquitins, in serum of children after thermal injury. PATIENTS/METHODS 42 children scalded by hot water, managed at the Department of Pediatric Surgery, with burns in 4-20% TBSA were included into the study (age 9 months up to 14 years, mean age 2.5±1 years). Blood plasma UCHL1 concentration was assessed in 2-6h, 12-16h, 3d, 5d, and 7d after injury using surface plasmon resonance imaging biosensor. 18 healthy subjects admitted for planned surgeries served as controls. RESULTS The UCHL1 concentration in the blood plasma of patients with thermal injuries reached its peak 12-16h after thermal injury and slowly decreased over time, and still did not reach the normal range on the 7th day after thermal injury. Mean concentrations of UCHL1 after thermal injury were above the range measured in controls (0.12ng/ml): 2-6h after injury - 5.59ng/dl, 12-16h after injury - 9.16ng/dl, 3 days after injury - 6.94ng/dl, 5 days after 5.41ng/dl, 7 days after injury - 4.09ng/dl. CONCLUSIONS We observed sudden increase in the concentration of UCHL1 2-16h after thermal injury with the slow decrease in the UCHL1 concentration over the time. UCHL1 concentration was proportional to the severity of the burn. Further studies are needed to determine the mechanisms by which UCHL1 contributes to metabolic response following thermal injury.
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Affiliation(s)
- Ewa Matuszczak
- Department of Pediatric Surgery, Medical University of Bialystok, Bialystok, Poland.
| | - Marzena Tylicka
- Department of Biophysics, Medical University of Bialystok, Bialystok, Poland
| | - Wojciech Dębek
- Department of Pediatric Surgery, Medical University of Bialystok, Bialystok, Poland
| | - Anna Sankiewicz
- Department of Electrochemistry, Institute of Chemistry, University of Bialystok, Bialystok, Poland
| | - Ewa Gorodkiewicz
- Department of Electrochemistry, Institute of Chemistry, University of Bialystok, Bialystok, Poland
| | - Adam Hermanowicz
- Department of Pediatric Surgery, Medical University of Bialystok, Bialystok, Poland
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15
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Matuszczak E, Tylicka M, Dębek W, Tokarzewicz A, Gorodkiewicz E, Hermanowicz A. Concentration of UHCL1 in the Serum of Children with Acute Appendicitis, Before and After Surgery, and Its Correlation with CRP and Prealbumin. J INVEST SURG 2017. [PMID: 28635516 DOI: 10.1080/08941939.2017.1282559] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ewa Matuszczak
- Pediatric Surgery Department, Medical University of Bialystok, Poland
| | - Marzena Tylicka
- Biophysics Department, Medical University of Bialystok, Poland
| | - Wojciech Dębek
- Pediatric Surgery Department, Medical University of Bialystok, Poland
| | | | | | - Adam Hermanowicz
- Pediatric Surgery Department, Medical University of Bialystok, Poland
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16
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Abstract
SET is elevated and mislocalized in the neuronal cytoplasm in brains of Alzheimer's disease (AD) and Down syndrome (DS) patients. Cytoplasm SET leads to inhibition of protein phosphatase 2A and is involved in the tau pathology. However, the regulation of SET gene expression remains elusive. In the present study, we cloned a 1399-bp segment of the 5' flanking region of the human SET gene and identified that the transcription start site (TSS) of SET transcript 1 is located at 123 bp upstream of the translation start site ATG in exon 1. Sequence analysis reveals several putative regulatory elements including NFkB, Sp1, and HSE. Luciferase assay and electrophoretic mobility shift assay (EMSA) identified a functional cis-acting NFkB-responsive element in the SET gene promoter. Overexpression and activation of NFkB upregulate transcription of SET isoform 1 but not isoform 2, indicating that the expression of these two isoforms is differentially regulated. The results demonstrate that NFkB plays an important role in regulation of the human SET gene expression. Our findings suggest that oxidative stress and inflammatory responses could result in abnormal SET gene expression, contributing to the tauopathy in AD pathogenesis.
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17
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Liu XR, Wang YY, Dan XG, Kumar A, Ye TZ, Yu YY, Yang LG. Anti-inflammatory potential of β-cryptoxanthin against LPS-induced inflammation in mouse Sertoli cells. Reprod Toxicol 2015; 60:148-55. [PMID: 26686910 DOI: 10.1016/j.reprotox.2015.11.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Revised: 11/04/2015] [Accepted: 11/10/2015] [Indexed: 10/22/2022]
Abstract
β-cryptoxanthin (CX), a major carotenoid pigment, can inhibit inflammatory gene expression in mice with nonalcoholic steatohepatitis. In the present study, we examined the anti-inflammatory effects of CX on lipopolysaccharide (LPS)-induced inflammation in mouse primary Sertoli cells and the possible molecular mechanisms behind its effects. The results showed that CX significantly inhibited LPS-induced decreases in cell viability and in the percentage of apoptotic cells. Moreover, CX inhibited the LPS-induced up-regulation of tumor necrosis factor α (TNF-α), interleukin-10 (IL-10), interleukin-6 (IL-6) and interleukin-1β (IL-1β) in Sertoli cells. In addition, CX significantly limited the LPS-induced down-regulation of AR, HSF2, CREB, FSHR, INHBB and ABP in Sertoli cells. Western blot analysis showed that CX significantly suppressed NF-κB (p65) activation as well as MAPK phosphorylation. All the results suggested that CX suppressed inflammation, possibly associated with the NF-κB activation and MAPK of phosphorylation. Thus, CX may possess therapeutic potential against inflammation-related diseases.
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Affiliation(s)
- Xiao-Ran Liu
- Key Laboratory of China Education Ministry in Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China, 430070
| | - Yue-Ying Wang
- Key Laboratory of China Education Ministry in Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China, 430070
| | - Xin-Gang Dan
- Key Laboratory of China Education Ministry in Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China, 430070
| | - Ashok Kumar
- College of Life Science and Technology, State Key laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, P.R. China, 430070
| | - Ting-Zhu Ye
- Key Laboratory of China Education Ministry in Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China, 430070
| | - Yao-Yao Yu
- Key Laboratory of China Education Ministry in Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China, 430070
| | - Li-Guo Yang
- Key Laboratory of China Education Ministry in Agricultural Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, P.R. China, 430070.
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18
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Park SH, Choi HJ, Lee SY, Han JS. TLR4-mediated IRAK1 activation induces TNF-α expression via JNK-dependent NF-κB activation in human bronchial epithelial cells. EUR J INFLAMM 2015. [DOI: 10.1177/1721727x15619185] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The purpose of this study was to identify the mechanism of lipopolysaccharide (LPS)-induced expression of tumor necrosis factor (TNF)-α in BEAS-2B. Toll-like receptor (TLR)4-specific siRNA was found to completely abolish the LPS-induced expression of MyD88 and TNF-α. There was enhanced binding of MyD88 with IRAK1 following LPS treatment, and MyD88- or IRAK1-specific siRNAs decreased the expression of TNF-α. In addition, IRAK1 siRNA downregulated the phosphorylation of PKCα, demonstrating that PKCα is a downstream effector of IRAK1. Inhibition of PKCα completely blocked the activation of AKT, whereas inhibition of AKT with a PI3K inhibitor prevented the LPS-induced expression of TNF-α. We found that AKT activated JNK, which then stimulated phosphorylation of Iκ-Bα, resulting in NF-κB activation. As expected, inhibition of NF-κB completely inhibited the expression of TNF-α. Taken together, our results suggest that LPS induces TNF-α expression by activating NF-κB via the PKCα/PI3K/AKT/JNK pathway, which is in turn dependent on MyD88/IRAK1.
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Affiliation(s)
- Sae Hoon Park
- Department of Emergency Medicine, Soon Chun Hyang University, Cheonan Hospital, Cheonan, Republic of Korea
| | - Hye-Jin Choi
- Biomedical Research Institute and Department of Biochemistry and Molecular Biology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - So Young Lee
- Biomedical Research Institute and Department of Biochemistry and Molecular Biology, College of Medicine, Hanyang University, Seoul, Republic of Korea
| | - Joong-Soo Han
- Biomedical Research Institute and Department of Biochemistry and Molecular Biology, College of Medicine, Hanyang University, Seoul, Republic of Korea
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19
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Overexpression of ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) delays Alzheimer's progression in vivo. Sci Rep 2014; 4:7298. [PMID: 25466238 PMCID: PMC4252905 DOI: 10.1038/srep07298] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Accepted: 11/14/2014] [Indexed: 11/16/2022] Open
Abstract
Deposition of amyloid β protein (Aβ) to form neuritic plaques in the brain is the pathological hallmark of Alzheimer's disease (AD). Aβ is produced by β- and γ-cleavages of amyloid β precursor protein (APP). Ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) is a de-ubiquitinating enzyme that cleaves ubiquitin at its carboxyl terminal. Dysfunction of UCHL1 has been reported in neurodegenerative diseases. However, whether UCHL1 affects Aβ production and AD progression remains unknown. Here we report that UCHL1 interacts with APP and regulates Aβ production. UCHL1 increases free ubiquitin level and accelerates the lysosomal degradation of APP by promoting its ubiquitination. Furthermore, we demonstrate that overexpression of UCHL1 by intracranial injection of UCHL1-expressing rAAV reduces Aβ production, inhibits neuritic plaque formation and improves memory deficits in AD transgenic model mice. Our study suggests that UCHL1 may delay Alzheimer's progression by regulating APP degradation in a long-term fashion, and that overexpression of UCHL1 may be a safe and effective disease-modifying strategy to treat AD.
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20
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Duan X, Tong J, Xu Q, Wu Y, Cai F, Li T, Song W. Upregulation of human PINK1 gene expression by NFκB signalling. Mol Brain 2014; 7:57. [PMID: 25108683 PMCID: PMC4237968 DOI: 10.1186/s13041-014-0057-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Accepted: 07/29/2014] [Indexed: 11/26/2022] Open
Abstract
Parkinson’s disease (PD) is one of the major neurodegenerative disorders. Mitochondrial malfunction is implicated in PD pathogenesis. Phosphatase and tensin homolog deleted on chromosome 10 (PTEN)-induced putative kinase 1 (PINK1), a serine/threonine kinase, plays an important role in the quality control of mitochondria and more than 70 PINK1 mutations have been identified to cause early-onset PD. However, the regulation of PINK1 gene expression remains elusive. In the present study, we identified the transcription start site (TSS) of the human PINK1 gene using switching mechanism at 5’end of RNA transcription (SMART RACE) assay. The TSS is located at 91 bp upstream of the translation start site ATG. The region with 104 bp was identified as the minimal promoter region by deletion analysis followed by dual luciferase assay. Four functional cis-acting nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB)-binding sites within the PINK1 promoter were identified. NFκB overexpression led to the up-regulation of PINK1 expression in both HEK293 cells and SH-SY5Y cells. Consistently, lipopolysaccharide (LPS), a strong activator of NFκB, significantly increased PINK1 expression in SH-SY5Y cells. Taken together, our results clearly suggested that PINK1 expression is tightly regulated at its transcription level and NFκB is a positive regulator for PINK1 expression.
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21
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Alpinetin inhibits LPS-induced inflammatory mediator response by activating PPAR-γ in THP-1-derived macrophages. Eur J Pharmacol 2013; 721:96-102. [DOI: 10.1016/j.ejphar.2013.09.049] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Revised: 09/19/2013] [Accepted: 09/26/2013] [Indexed: 01/30/2023]
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22
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Zhang H, Sun Y, Hu R, Luo W, Mao X, Zhao Z, Chen Q, Zhang Z. The regulation of the UCH-L1 gene by transcription factor NF-κB in podocytes. Cell Signal 2013; 25:1574-85. [PMID: 23567262 DOI: 10.1016/j.cellsig.2013.03.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 03/23/2013] [Accepted: 03/28/2013] [Indexed: 11/19/2022]
Abstract
In kidney, the ubiquitin carboxy-terminal hydrolase 1 (UCH-L1) is involved in podocyte injury and proteinuria but details of the mechanism underlying its regulation are not known. Activation of NF-κB is thought to be the predominant risk factor for kidney disease; therefore, it is postulated that UCH-L1 may be one of the NF-κB target genes. In this study, we investigated the involvement of NF-κB activation in the regulation of UCH-L1 expression and the function of murine podocytes. Stimulation of podocytes with the cytokines TNF-α and IL-1β up-regulated UCH-L1 expression rapidly at the mRNA and protein levels and the NF-κB-specific inhibitor pyrrolidine dithiocarbamate resulted in down-regulation. NF-κB up-regulates UCH-L1 via binding the --300 bp and --109 bp sites of its promoter, which was confirmed by the electrophoretic mobility shift assay of DNA-nuclear protein binding. In the renal biopsy from lupus nephritis patients, the expressions of NF-κB and UCH-L1 increased in immunohistochestry staining and were positively correlated. Activation of NF-κB up-regulates UCH-L1 expression following changing of other podocytes molecules, such as nephrin and snail. These results suggest that activation of the NF-κB signaling pathway could be the major pathogenesis to up-regulate UCH-L1 in podocyte injury, followed by the turnover of other molecules, which might result in morphological changes and dysfunction of podocytes. This work help us to understand the effect of NF-κB on specific target molecules of podocytes, and suggest that targeting the NF-κB-UCH-L1 interaction could be a novel therapeutic strategy for the treatment of podocyte lesions and proteinuria.
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Affiliation(s)
- Hongxia Zhang
- Department of Pathology and Key Laboratory of Molecular Medicine, School of Basic Medical Sciences, Fudan University, Shanghai, People's Republic of China.
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23
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Magnolol Inhibits LPS-Induced Inflammatory Response in Uterine Epithelial Cells. Inflammation 2013; 36:997-1003. [DOI: 10.1007/s10753-013-9631-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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24
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Ly PTT, Wu Y, Zou H, Wang R, Zhou W, Kinoshita A, Zhang M, Yang Y, Cai F, Woodgett J, Song W. Inhibition of GSK3β-mediated BACE1 expression reduces Alzheimer-associated phenotypes. J Clin Invest 2012. [PMID: 23202730 DOI: 10.1172/jci64516] [Citation(s) in RCA: 296] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Deposition of amyloid β protein (Aβ) to form neuritic plaques in the brain is the pathological hallmark of Alzheimer's disease (AD). Aβ is generated from sequential cleavages of the β-amyloid precursor protein (APP) by the β- and γ-secretases, and β-site APP-cleaving enzyme 1 (BACE1) is the β-secretase essential for Aβ generation. Previous studies have indicated that glycogen synthase kinase 3 (GSK3) may play a role in APP processing by modulating γ-secretase activity, thereby facilitating Aβ production. There are two highly conserved isoforms of GSK3: GSK3α and GSK3β. We now report that specific inhibition of GSK3β, but not GSK3α, reduced BACE1-mediated cleavage of APP and Aβ production by decreasing BACE1 gene transcription and expression. The regulation of BACE1 gene expression by GSK3β was dependent on NF-κB signaling. Inhibition of GSK3 signaling markedly reduced Aβ deposition and neuritic plaque formation, and rescued memory deficits in the double transgenic AD model mice. These data provide evidence for regulation of BACE1 expression and AD pathogenesis by GSK3β and that inhibition of GSK3 signaling can reduce Aβ neuropathology and alleviate memory deficits in AD model mice. Our study suggests that interventions that specifically target the β-isoform of GSK3 may be a safe and effective approach for treating AD.
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Affiliation(s)
- Philip T T Ly
- Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, Graduate Program in Neuroscience, The University of British Columbia, Vancouver, British Columbia, Canada
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Tamagno E, Guglielmotto M, Monteleone D, Vercelli A, Tabaton M. Transcriptional and post-transcriptional regulation of β-secretase. IUBMB Life 2012. [DOI: 10.1002/iub.1099] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Guglielmotto M, Monteleone D, Boido M, Piras A, Giliberto L, Borghi R, Vercelli A, Fornaro M, Tabaton M, Tamagno E. Aβ1-42-mediated down-regulation of Uch-L1 is dependent on NF-κB activation and impaired BACE1 lysosomal degradation. Aging Cell 2012; 11:834-44. [PMID: 22726800 DOI: 10.1111/j.1474-9726.2012.00854.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Amyloid-β 1-42 accumulation is the major pathogenetic event in Alzheimer's disease (AD), believed to be responsible for synaptic dysfunction and neuronal cell death. However, the physiologic activity of Aβ peptides remains elusive: Aβ might not only play a toxic role, but also act as a functional signaling intermediate. We recently reported that Aβ1-42 promotes BACE1 transcription through the activation of the JNK-c-jun pathway. Here, we show that the Aβ1-42-mediated increase in BACE1 expression is accompanied by a decrease in ubiquitin C-terminal hydrolase L1 (Uch-L1) expression and activity in different cellular models such as neuroblastoma SH-SY5Y as well as NT(2) neuronal cells. We also found that the increase in BACE1 and the decrease in Uch-L1 are related events and depend on NF-κB pathway; thus, Aβ1-42 is able to activate NF-κB pathway and the pretreatment with a pharmacological inhibitor, able to block the nuclear translocation of the transactivating unit p65, almost completely prevents both the decrease in Uch-L1 and the increase in BACE1 expression. In addition, the decrease in Uch-L1 activity interferes with the lysosomal degradation of BACE1, as demonstrated by the decrease in Cathepsin D activity and the partial accumulation of BACE1 in lysosomes after Aβ1-42 treatment as well after Uch-L1 inhibition. In support of the in vitro data, we observed low protein levels of Uch-L1 associated with high protein levels of BACE1 in sporadic AD brains. Our data suggest that Uch-L1 could be an attractive target for the development of new therapeutic approaches for AD.
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Affiliation(s)
- Michela Guglielmotto
- Department of Experimental Medicine and Oncology, University of Torino, Torino, Italy
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Sp1 Regulates Human Huntingtin Gene Expression. J Mol Neurosci 2012; 47:311-21. [DOI: 10.1007/s12031-012-9739-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Accepted: 02/27/2012] [Indexed: 01/01/2023]
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Zhang M, Deng Y, Luo Y, Zhang S, Zou H, Cai F, Wada K, Song W. Control of BACE1 degradation and APP processing by ubiquitin carboxyl-terminal hydrolase L1. J Neurochem 2012; 120:1129-38. [PMID: 22212137 DOI: 10.1111/j.1471-4159.2011.07644.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Deposition of amyloid β protein (Aβ) in the brain is the hallmark of Alzheimer's disease (AD) pathogenesis. Beta-site amyloid precursor protein (APP) cleaving enzyme 1 (BACE1) is the β-secretase in vivo essential for generation of Aβ. Previously we demonstrated that BACE1 is ubiquitinated and the degradation of BACE1 is mediated by the ubiquitin-proteasome pathway (UPP). However the mechanism underlying regulation of BACE1 degradation by UPP remains elusive. Ubiquitin carboxyl-terminal hydrolase L1 (UCHL1) is a deubiquitinating enzyme highly specific to neuron, catalyzing the hydrolysis of ubiquitin conjugates from ubiquitinated substrates. UCHL1 regulates ubiquitin-dependent protein degradation. However, whether UCHL1 is particularly involved in the proteasomal degradation of BACE1 and what is the role of UCHL1 in AD pathogenesis remain elusive. To investigate the effect of UCHL1 on BACE1 degradation, HUCH cells, a UCHL1 stably over-expressed HEK293 cell line, was established. We found that inhibition of UCHL1 significantly increased BACE1 protein level in a time-dependent manner. Half life of BACE1 was reduced in HUCH cells compared with HEK. Over-expression of UCHL1 decreased APP C-terminal fragment C99 and Aβ levels in HUCH cells. Moreover, disruption of Uchl1 gene significantly elevated levels of endogenous BACE1, C99 and Aβ in the Uchl1-null gad mice. These results demonstrated that UCHL1 accelerates BACE1 degradation and affects APP processing and Aβ production. This study suggests that potentiation of UCHL1 might be able to reduce the level of BACE1 and Aβ in brain, which makes it a novel target for AD drug development.
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Affiliation(s)
- Mingming Zhang
- Townsend Family Laboratories, Department of Psychiatry, Brain Research Center, Graduate Program in Neuroscience, The University of British Columbia, Vancouver, Canada
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