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Kasperczak M, Bromiński G, Kołodziejczak-Guglas I, Antczak A, Wiznerowicz M. Prognostic Significance of Elevated UCHL1, SNRNP200, and PAK4 Expression in High-Grade Clear Cell Renal Cell Carcinoma: Insights from LC-MS/MS Analysis and Immunohistochemical Validation. Cancers (Basel) 2024; 16:2844. [PMID: 39199615 PMCID: PMC11352290 DOI: 10.3390/cancers16162844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2024] [Revised: 08/07/2024] [Accepted: 08/10/2024] [Indexed: 09/01/2024] Open
Abstract
Recent advancements in proteomics have enhanced our understanding of clear cell renal cell carcinoma (CCRCC). Utilizing a combination of liquid chromatography-tandem mass spectrometry (LC-MS/MS) followed by immunohistochemical validation, we investigated the expression levels of UCHL1, PAK4, and SNRNP200 in high-grade CCRCC samples. Our analysis also integrated Reactome pathway enrichment to elucidate the roles of these proteins in cancer-related pathways. Our results revealed significant upregulation of UCHL1 and SNRNP200 and downregulation of PAK4 in high-grade CCRCC tissues compared to non-cancerous tissues. UCHL1, a member of the ubiquitin carboxy-terminal hydrolase family, showed variable expression across different tissues and was notably involved in the Akt signaling pathway, which plays a critical role in cellular survival in various cancers. SNRNP200, a key component of the RNA splicing machinery, was found to be essential for proper cell cycle progression and possibly linked to autosomal dominant retinitis pigmentosa. PAK4's role was noted as critical in RCC cell proliferation and invasion and its expression correlated significantly with poor progression-free survival in CCRCC. Additionally, the expression patterns of these proteins suggested potential as prognostic markers for aggressive disease phenotypes. This study confirms the upregulation of UCHL1, SNRNP200, and PAK4 as significant factors in the progression of high-grade CCRCC, linking their enhanced expression to poor clinical outcomes. These findings propose these proteins as potential prognostic markers and therapeutic targets in CCRCC, offering novel insights into the molecular landscape of this malignancy and highlighting the importance of targeted therapeutic interventions.
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Affiliation(s)
- Michał Kasperczak
- Department of Urology, Poznań University of Medical Sciences, 61-701 Poznań, Poland
| | - Gabriel Bromiński
- Department of Urology, Poznań University of Medical Sciences, 61-701 Poznań, Poland
| | | | - Andrzej Antczak
- Department of Urology, Poznań University of Medical Sciences, 61-701 Poznań, Poland
| | - Maciej Wiznerowicz
- Department of Urology, Poznań University of Medical Sciences, 61-701 Poznań, Poland
- International Institute for Molecular Oncology, 60-203 Poznań, Poland
- University Hospital of Lord’s Transfiguration, 61-848 Poznań, Poland
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Popescu GDA, Scheau C, Badarau IA, Dumitrache MD, Caruntu A, Scheau AE, Costache DO, Costache RS, Constantin C, Neagu M, Caruntu C. The Effects of Capsaicin on Gastrointestinal Cancers. Molecules 2020; 26:molecules26010094. [PMID: 33379302 PMCID: PMC7794743 DOI: 10.3390/molecules26010094] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/22/2020] [Accepted: 12/24/2020] [Indexed: 12/11/2022] Open
Abstract
Gastrointestinal (GI) cancers are a group of diseases with very high positions in the ranking of cancer incidence and mortality. While they show common features regarding the molecular mechanisms involved in cancer development, organ-specific pathophysiological processes may trigger distinct signaling pathways and intricate interactions with inflammatory cells from the tumoral milieu and mediators involved in tumorigenesis. The treatment of GI cancers is a topic of increasing interest due to the severity of these diseases, their impact on the patients' survivability and quality of life, and the burden they set on the healthcare system. As the efficiency of existing drugs is hindered by chemoresistance and adverse reactions when administered in high doses, new therapies are sought, and emerging drugs, formulations, and substance synergies are the focus of a growing number of studies. A class of chemicals with great potential through anti-inflammatory, anti-oxidant, and anti-tumoral effects is phytochemicals, and capsaicin in particular is the subject of intensive research looking to validate its position in complementing cancer treatment. Our paper thoroughly reviews the available scientific evidence concerning the effects of capsaicin on major GI cancers and its interactions with the molecular pathways involved in the course of these diseases.
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Affiliation(s)
| | - Cristian Scheau
- Department of Physiology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (I.A.B.); (C.C.)
- Correspondence:
| | - Ioana Anca Badarau
- Department of Physiology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (I.A.B.); (C.C.)
| | - Mihai-Daniel Dumitrache
- Departament of Pneumology IV, “Marius Nasta” Institute of Pneumophtysiology, 050159 Bucharest, Romania;
| | - Ana Caruntu
- Department of Oral and Maxillofacial Surgery, “Carol Davila” Central Military Emergency Hospital, 010825 Bucharest, Romania;
- Department of Preclinical Sciences, Faculty of Medicine, “Titu Maiorescu” University, 031593 Bucharest, Romania
| | - Andreea-Elena Scheau
- Department of Radiology and Medical Imaging, Fundeni Clinical Institute, 022328 Bucharest, Romania;
| | - Daniel Octavian Costache
- Department of Dermatology, “Carol Davila” Central Military Emergency Hospital, 010825 Bucharest, Romania;
| | - Raluca Simona Costache
- Gastroenterology and Internal Medicine Clinic, “Carol Davila” Central Military Emergency Hospital, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania;
| | - Carolina Constantin
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania; (C.C.); (M.N.)
- Department of Pathology, Colentina University Hospital, 020125 Bucharest, Romania
| | - Monica Neagu
- Immunology Department, Victor Babes National Institute of Pathology, 050096 Bucharest, Romania; (C.C.); (M.N.)
- Department of Pathology, Colentina University Hospital, 020125 Bucharest, Romania
- Faculty of Biology, University of Bucharest, 76201 Bucharest, Romania
| | - Constantin Caruntu
- Department of Physiology, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania; (I.A.B.); (C.C.)
- Department of Dermatology, Prof. N.C. Paulescu National Institute of Diabetes, Nutrition and Metabolic Diseases, 011233 Bucharest, Romania
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PSD-93 Interacts with SynGAP and Promotes SynGAP Ubiquitination and Ischemic Brain Injury in Mice. Transl Stroke Res 2020; 11:1137-1147. [DOI: 10.1007/s12975-020-00795-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/05/2020] [Accepted: 02/20/2020] [Indexed: 01/14/2023]
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Jin Y, Zhou H, Gong L, Xia J, Yu G, Chen Y. Prognostic potential and oncogenic effects of UCH-L1 expression in hilar cholangiocarcinoma. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:10802-10811. [PMID: 31966423 PMCID: PMC6965845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/20/2017] [Indexed: 06/10/2023]
Abstract
BACKGROUND UCH-L1 has been implicated to playing a potential role in cancer development and progression. However, UCH-L1's role in hilar cholangiocarcinoma remains unclear. METHODS The function of UCH-L1 in hilar cholangiocarcinoma was evaluated using human tissues, molecular and cell biology, and animal models, and its prognostic significance was determined according to its impact on patient survival. RESULTS In the present study, UCH-L1 was overexpressed in 62.1% of patients with primary hilar cholangiocarcinoma. Overexpression of UCH-L1 is associated with large tumor size, advanced tumor stage, lymph node metastasis, advanced TNM stage, and high CA19-9 levels, and is also correlated with poor survival rates. Silencing of UCH-L1 inhibited proliferation, colony formation of hilar cholangiocarcinoma cells in vitro and suppressed tumor growth of hilar cholangiocarcinoma cells in vivo. We also observed that silencing of UCH-L1 decreased the phosphorylation level of Akt and PCNA in the xenograft experiments. DISCUSSION Taken together, these findings suggest that UCH-L1 functions as an oncogene in the development and progression of hilar cholangiocarcinoma. UCH-L1 can serve as an independent prognostic factor and maybe a potential therapeutic target for patients with hilar cholangiocarcinoma.
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Affiliation(s)
- Yan Jin
- Department of Gastroenterology, Wuxi Second Hospital, Nanjing Medical UniversityJiangsu, People’s Republic of China
| | - Hong Zhou
- Department of General Surgery, Wuxi Second Hospital, Nanjing Medical UniversityJiangsu, People’s Republic of China
| | - Lei Gong
- Department of Gastroenterology, Wuxi Second Hospital, Nanjing Medical UniversityJiangsu, People’s Republic of China
| | - Jiazeng Xia
- Department of General Surgery, Wuxi Second Hospital, Nanjing Medical UniversityJiangsu, People’s Republic of China
| | - Guanzhen Yu
- Department of Medicine Oncology, Shanghai East Hospital, Tongji University School of MedicineShanghai, People’s Republic of China
| | - Yigang Chen
- Department of General Surgery, Wuxi Second Hospital, Nanjing Medical UniversityJiangsu, People’s Republic of China
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Nguyen Q, Tb Tran T, Chan LC, Nielsen LK, Reid S. In vitro production of baculoviruses: identifying host and virus genes associated with high productivity. Appl Microbiol Biotechnol 2016; 100:9239-9253. [PMID: 27613424 DOI: 10.1007/s00253-016-7774-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 07/25/2016] [Accepted: 08/01/2016] [Indexed: 01/22/2023]
Abstract
Baculoviruses are recognized as viral workhorses of biotechnology, being used for production of vaccines, complex recombinant proteins, gene delivery vectors' and safe biological pesticides. Improving production yields and understanding the interactions of the virus and its host cell are important aspects of ensuring baculovirus-based processes are commercially competitive. This study aims at potential optimization of host cells used in in vitro virus production by systemically investigating changes in host gene expression in response to virus replication and transcription inside host cells. The study focuses on in vitro interactions of the Helicoverpa armigera virus with Helicoverpa zea insect cells. We used 22 genome-wide microarrays to simultaneously measure both virus and host genes in infected cells in multiple batch suspension cultures, representing high- and low-producing infection conditions. Among 661 differentially expressed genes, we identified a core set of 59 host genes consistently overexpressed post infection, with strong overrepresentation of genes involved in retrotransposition, protein processing in the endoplasmic reticulum, and ubiquitin-mediated proteolysis. Applying a whole genome correlation network analysis to link gene expression to productivity, we revealed 18 key genes significantly associated to virus yield. In addition, this study is among the first to perform a genome-wide expression study for a major baculovirus group II strain, the H. armigera virus, extending current understanding of baculovirus-insect interactions, which mainly focuses on group I viruses.
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Affiliation(s)
- Quan Nguyen
- Livestock Genomics, CSIRO (The Commonwealth Scientific and Industrial Research Organisation) Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, QLD, 4067, Australia.
| | - Trinh Tb Tran
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Leslie Cl Chan
- Patheon Biologics, 37 Kent street, Brisbane, QLD, 4102, Australia
| | - Lars K Nielsen
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Steven Reid
- School of Chemistry & Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia.
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Manral C, Roy S, Singh M, Gautam S, Yadav RK, Rawat JK, Devi U, Ansari MN, Saeedan AS, Kaithwas G. Effect of β-sitosterol against methyl nitrosourea-induced mammary gland carcinoma in albino rats. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 16:260. [PMID: 27473871 PMCID: PMC4966711 DOI: 10.1186/s12906-016-1243-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 07/23/2016] [Indexed: 01/11/2023]
Abstract
BACKGROUND The present study was in quested to study the effects of β-sitosterol on methyl nitrosourea (MNU) induced mammary gland carcinoma in albino wistar rats. METHODS Animals were randomized and divided into four groups of eight animals each. Group I (sham control 1 % CMC in normal saline p.o.); Group II (toxic control, MNU 47 mg/kg, i.v); Group III (MNU 47 mg/kg, i.v + β-sitosterol, 10 mg/kg, p.o); Group IV (MNU 47 mg/kg, i.v + β-sitosterol, 20 mg/kg, p.o). Toxicity was induced by single i.v. injection of MNU followed by β-sitosterol supplementation therapy for 115 days at the dose mentioned above. RESULTS Treatment with β-sitosterol evidenced decrease in the alveolar bud and lobule score in the whole mount of the mammary gland. β-sitosterol exhibited diminishing effect on oxidative stress through synchronizing lipid and enzymatic antioxidant defense. A significant decrease in the saturated and unsaturated fatty acid was evident with the MNU treatment and β-sitosterol demonstrated a marked effect on it. Pgp 9.5 expression was dose dependently upregulated by β-sitosterol treatment in comparison to MNU treatment. On the contrary, downregulated NF-kB expression was perceived, when β-sitosterol was concomitantly administered with MNU. CONCLUSION β-sitosterol afforded significant protection against the deleterious effects of MNU.
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Affiliation(s)
- Chetan Manral
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India
| | - Subhadeep Roy
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India
| | - Manjari Singh
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India
| | - Swetlana Gautam
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India
| | - Rajnish K Yadav
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India
| | - Jitendra K Rawat
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India
| | - Uma Devi
- Department of Pharmaceutical Sciences, FHMSIASM SHIATS-Deemed University (Formerly Allahabad Agriculture Institute), Naini, Allahabad, 211007, (U.P.), India
| | - Md Nazam Ansari
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, KSA
| | - Abdulaziz S Saeedan
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj, KSA
| | - Gaurav Kaithwas
- Department of Pharmaceutical Sciences, School of Biosciences and Biotechnology, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya vihar, Raibareli road, Lucknow, 226025, (U.P.), India.
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8
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Vriend J, Ghavami S, Marzban H. The role of the ubiquitin proteasome system in cerebellar development and medulloblastoma. Mol Brain 2015; 8:64. [PMID: 26475605 PMCID: PMC4609148 DOI: 10.1186/s13041-015-0155-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 10/08/2015] [Indexed: 01/12/2023] Open
Abstract
Cerebellar granule cells precursors are derived from the upper rhombic lip and migrate tangentially independent of glia along the subpial stream pathway to form the external germinal zone. Postnatally, granule cells migrate from the external germinal zone radially through the Purkinje cell layer, guided by Bergmann glia fibers, to the internal granular cell layer. Medulloblastomas (MBs) are the most common malignant childhood brain tumor. Many of these tumors develop from precursor cells of the embryonic rhombic lips. Four main groups of MB are recognized. The WNT group of MBs arise primarily from the lower rhombic lip and embryonic brainstem. The SHH group of MBs originate from cerebellar granule cell precursors in the external germinal zone of the embryonic cerebellum. The cellular origins of type 3 and type 4 MBs are not clear. Several ubiquitin ligases are revealed to be significant factors in development of the cerebellum as well as in the initiation and maintenance of MBs. Proteasome dysfunction at a critical stage of development may be a major factor in determining whether progenitor cells which are destined to become granule cells differentiate normally or become MB cells. We propose the hypothesis that proteasomal activity is essential to regulate the critical transition between proliferating granule cells and differentiated granule cells and that proteasome dysfunction may lead to MB. Proteasome dysfunction could also account for various mutations in MBs resulting from deficiencies in DNA checkpoint and repair mechanisms prior to development of MBs. Data showing a role for the ubiquitin ligases β-TrCP, FBW7, Huwe1, and SKP2 in MBs suggest the possibility of a classification of MBs based on the expression (over expression or under expression) of specific ubiquitin ligases which function as oncogenes, tumor suppressors or cell cycle regulators.
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Affiliation(s)
- Jerry Vriend
- Department of Human Anatomy and Cell Science, Rm129, BMSB, 745 Bannatyne Avenue, Winnipeg, MB, Canada
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, Rm129, BMSB, 745 Bannatyne Avenue, Winnipeg, MB, Canada.,Children's Hospital Research Institute of Manitoba (CHRIM), College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, R3E 0J9, Canada
| | - Hassan Marzban
- Department of Human Anatomy and Cell Science, Rm129, BMSB, 745 Bannatyne Avenue, Winnipeg, MB, Canada. .,Children's Hospital Research Institute of Manitoba (CHRIM), College of Medicine, Faculty of Health Sciences, University of Manitoba, Winnipeg, MB, R3E 0J9, Canada.
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Deger JM, Gerson JE, Kayed R. The interrelationship of proteasome impairment and oligomeric intermediates in neurodegeneration. Aging Cell 2015; 14:715-24. [PMID: 26053162 PMCID: PMC4568959 DOI: 10.1111/acel.12359] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2015] [Indexed: 01/07/2023] Open
Abstract
Various neurodegenerative diseases are characterized by the accumulation of amyloidogenic proteins such as tau, α-synuclein, and amyloid-β. Prior to the formation of these stable aggregates, intermediate species of the respective proteins-oligomers-appear. Recently acquired data have shown that oligomers may be the most toxic and pathologically significant to neurodegenerative diseases such as Alzheimer's and Parkinson's. The covalent modification of these oligomers may be critically important for biological processes in disease. Ubiquitin and small ubiquitin-like modifiers are the commonly used tags for degradation. While the modification of large amyloid aggregates by ubiquitination is well established, very little is known about the role ubiquitin may play in oligomer processing and the importance of the more recently discovered sumoylation. Many proteins involved in neurodegeneration have been found to be sumoylated, notably tau protein in brains afflicted with Alzheimer's. This evidence suggests that while the cell may not have difficulty recognizing dangerous proteins, in brains afflicted with neurodegenerative disease, the proteasome may be unable to properly digest the tagged proteins. This would allow toxic aggregates to develop, leading to even more proteasome impairment in a snowball effect that could explain the exponential progression in most neurodegenerative diseases. A better understanding of the covalent modifications of oligomers could have a huge impact on the development of therapeutics for neurodegenerative diseases. This review will focus on the proteolysis of tau and other amyloidogenic proteins induced by covalent modification, and recent findings suggesting a relationship between tau oligomers and sumoylation.
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Affiliation(s)
- Jennifer M. Deger
- Departments of Neurology, Neuroscience and Cell Biology Mitchell Center for Neurodegenerative Diseases University of Texas Medical Branch 301 University Building, Medical Research Building Galveston TX 77555‐1045 USA
| | - Julia E. Gerson
- Departments of Neurology, Neuroscience and Cell Biology Mitchell Center for Neurodegenerative Diseases University of Texas Medical Branch 301 University Building, Medical Research Building Galveston TX 77555‐1045 USA
| | - Rakez Kayed
- Departments of Neurology, Neuroscience and Cell Biology Mitchell Center for Neurodegenerative Diseases University of Texas Medical Branch 301 University Building, Medical Research Building Galveston TX 77555‐1045 USA
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Corsetti V, Florenzano F, Atlante A, Bobba A, Ciotti MT, Natale F, Della Valle F, Borreca A, Manca A, Meli G, Ferraina C, Feligioni M, D'Aguanno S, Bussani R, Ammassari-Teule M, Nicolin V, Calissano P, Amadoro G. NH2-truncated human tau induces deregulated mitophagy in neurons by aberrant recruitment of Parkin and UCHL-1: implications in Alzheimer's disease. Hum Mol Genet 2015; 24:3058-81. [PMID: 25687137 DOI: 10.1093/hmg/ddv059] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 02/10/2015] [Indexed: 01/26/2023] Open
Abstract
Disarrangement in functions and quality control of mitochondria at synapses are early events in Alzheimer's disease (AD) pathobiology. We reported that a 20-22 kDa NH2-tau fragment mapping between 26 and 230 amino acids of the longest human tau isoform (aka NH2htau): (i) is detectable in cellular and animal AD models, as well in synaptic mitochondria and cerebrospinal fluids (CSF) from human AD subjects; (ii) is neurotoxic in primary hippocampal neurons; (iii) compromises the mitochondrial biology both directly, by inhibiting the ANT-1-dependent ADP/ATP exchange, and indirectly, by impairing their selective autophagic clearance (mitophagy). Here, we show that the extensive Parkin-dependent turnover of mitochondria occurring in NH2htau-expressing post-mitotic neurons plays a pro-death role and that UCHL-1, the cytosolic Ubiquitin-C-terminal hydrolase L1 which directs the physiological remodeling of synapses by controlling ubiquitin homeostasis, critically contributes to mitochondrial and synaptic failure in this in vitro AD model. Pharmacological or genetic suppression of improper mitophagy, either by inhibition of mitochondrial targeting to autophagosomes or by shRNA-mediated silencing of Parkin or UCHL-1 gene expression, restores synaptic and mitochondrial content providing partial but significant protection against the NH2htau-induced neuronal death. Moreover, in mitochondria from human AD synapses, the endogenous NH2htau is stably associated with Parkin and with UCHL-1. Taken together, our studies show a causative link between the excessive mitochondrial turnover and the NH2htau-induced in vitro neuronal death, suggesting that pathogenetic tau truncation may contribute to synaptic deterioration in AD by aberrant recruitment of Parkin and UCHL-1 to mitochondria making them more prone to detrimental autophagic clearance.
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Affiliation(s)
- V Corsetti
- Institute of Translational Pharmacology (IFT) - National Research Council (CNR), Via Fosso del Cavaliere 100-00133, Rome, Italy
| | - F Florenzano
- European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - A Atlante
- Institute of Biomembranes and Bioenergetics (IBBE)-CNR, Via Amendola 165/A, 70126 Bari, Italy
| | - A Bobba
- Institute of Biomembranes and Bioenergetics (IBBE)-CNR, Via Amendola 165/A, 70126 Bari, Italy
| | - M T Ciotti
- Institute of Cellular Biology and Neuroscience (IBCN)-CNR, IRCSS Santa Lucia Foundation Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - F Natale
- Institute of Cellular Biology and Neuroscience (IBCN)-CNR, IRCSS Santa Lucia Foundation Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - F Della Valle
- Institute of Cellular Biology and Neuroscience (IBCN)-CNR, IRCSS Santa Lucia Foundation Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - A Borreca
- Institute of Cellular Biology and Neuroscience (IBCN)-CNR, IRCSS Santa Lucia Foundation Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - A Manca
- European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - G Meli
- European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - C Ferraina
- European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - M Feligioni
- European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - S D'Aguanno
- Institute of Cellular Biology and Neuroscience (IBCN)-CNR, IRCSS Santa Lucia Foundation Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - R Bussani
- UCO Pathological Anatomy and Histopathology Unit, Cattinara Hospital Strada di Fiume 447, 34149 Trieste, Italy and
| | - M Ammassari-Teule
- Institute of Cellular Biology and Neuroscience (IBCN)-CNR, IRCSS Santa Lucia Foundation Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - V Nicolin
- Department of Medical, Surgical and Health Science, University of Trieste, Strada di Fiume 449, 34149 Trieste, Italy
| | - P Calissano
- European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
| | - G Amadoro
- Institute of Translational Pharmacology (IFT) - National Research Council (CNR), Via Fosso del Cavaliere 100-00133, Rome, Italy European Brain Research Institute (EBRI), Via del Fosso di Fiorano 64-65, 00143 Rome, Italy
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Zhang YP, Zhu YB, Duan DD, Fan XM, He Y, Su JW, Liu YL. Serum UCH-L1 as a Novel Biomarker to Predict Neuronal Apoptosis Following Deep Hypothermic Circulatory Arrest. Int J Med Sci 2015; 12:576-82. [PMID: 26180514 PMCID: PMC4502062 DOI: 10.7150/ijms.12111] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 06/09/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Deep hypothermic circulatory arrest (DHCA) has been used in cardiac surgery involving infant complex congenital heart disease and aortic dissection. DHCA carries a risk of neuronal apoptotic death in brain. Serum ubiquitin C-terminal hydrolase L1 (UCH-L1) level is elevated in a number of neurological diseases involving neuron injury and death. We studied the hypothesis that UCH-L1 may be a potential biomarker for DHCA-induced ischemic neuronal apoptosis. METHODS Anesthetized piglets were used to perform cardiopulmonary bypass (CPB). DHCA was induced for 1 hour followed by CPB rewarming. Blood samples were collected and serum UCH-L1 levels were measured. Neuron apoptosis and Bax and Bcl-2 proteins in hippocampus were examined. The relationship between neuron apoptosis and UCH-L1 level was determined by receiver operating characteristics (ROC) curves and correlation analysis. RESULTS DHCA resulted in marked neuronal apoptosis, significant increase in Bax:Bcl-2 ratio in hippocampus and UCH-L1 level elevations in serum (all P<0.05). Positive correlation was obtained between serum UCH-L1 level and the severity of neuron apoptosis (r= 0.78, P<0.01). By ROC, the area under the curve were 0.88 (95% CI: 0.74-0.99; P<0.01), 0.81 (95% CI: 0.81-0.96; P<0.05), 0.71 (95% CI: 0.47-0.92; P=0.11) for UCH-L1, Bax/Bcl-2 ratio and Bax, respectively. Using a cut-off point of 0.25, the UCH-L1 predicted neuronal apoptosis with a sensitivity of 85% and specificity of 57%. CONCLUSION Serum UCH-L1, as an easy and quick measurable biomarker, can predict neural apoptosis induced by DHCA. The elevation in UCH-L1 concentration is consistent with the severity of neural apoptosis following DHCA.
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Affiliation(s)
- Ya-Ping Zhang
- 1. Pediatric Heart Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 100029
| | - Yao-Bin Zhu
- 1. Pediatric Heart Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 100029
| | - Dayue Darrel Duan
- 2. Laboratory of Cardiovascular Phenomics, the Department of Pharmacology, University of Nevada School of Medicine, Reno, Nevada, USA 89557
| | - Xiang-Ming Fan
- 1. Pediatric Heart Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 100029
| | - Yan He
- 1. Pediatric Heart Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 100029
| | - Jun-Wu Su
- 1. Pediatric Heart Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 100029
| | - Ying-Long Liu
- 1. Pediatric Heart Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China 100029
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12
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Recent updates on drug abuse analyzed by neuroproteomics studies: Cocaine, Methamphetamine and MDMA. TRANSLATIONAL PROTEOMICS 2014. [DOI: 10.1016/j.trprot.2014.04.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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13
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Iqbal J, Li W, Hasan M, Liu K, Awan U, Saeed Y, Zhang Y, Muhammad Khan A, Shah A, Qing H, Deng Y. Differential expression of specific cellular defense proteins in rat hypothalamus under simulated microgravity induced conditions: comparative proteomics. Proteomics 2014; 14:1424-33. [PMID: 24648329 DOI: 10.1002/pmic.201400019] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Revised: 02/16/2014] [Accepted: 03/10/2014] [Indexed: 12/14/2022]
Abstract
Microgravity severely halts the structural and functional cerebral capacity of astronauts especially affecting their brains due to the stress produced by cephalic fluid shift. We employed a rat tail suspension model to substantiate simulated microgravity (SM) in brain. In this study, comparative mass spectrometry was applied in order to demonstrate the differential expression of 17 specific cellular defense proteins. Gamma-enolase, peptidyl-prolyl cis-trans isomerase A, glial fibrillary acidic protein, heat shock protein HSP 90-alpha, 10 kDa heat shock protein, mitochondrial, heat shock cognate 71 kDa protein, superoxide dismutase 1 and dihydropyrimidinase-related protein 2 were found to be upregulated by HPLC/ESI-TOF. Furthermore, five differentially expressed proteins including 60 kDa heat shock protein, mitochondrial, heat shock protein HSP 90-beta, peroxiredoxin-2, stress-induced-phosphoprotein, and UCHL-1 were found to be upregulated by HPLC/ESI-Q-TOF MS. In addition, downregulated proteins include cytochrome C, superoxide dismutase 2, somatic, and excitatory amino acid transporter 1 and protein DJ-1. Validity of MS results was successfully performed by Western blot analysis of DJ-1 protein. This study will not only help to understand the neurochemical responses produced under microgravity but also will give future direction to cure the proteomic losses and their after effects in astronauts.
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Affiliation(s)
- Javed Iqbal
- School of Life Sciences, Beijing Institute of Technology, Beijing, P. R. China
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14
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Shen H, Liao K, Zhang W, Wu H, Shen B, Xu Z. Differential expression of peroxiredoxin 6, annexin A5 and ubiquitin carboxyl-terminal hydrolase isozyme L1 in testis of rat fetuses after maternal exposure to di-n-butyl phthalate. Reprod Toxicol 2013; 39:76-84. [DOI: 10.1016/j.reprotox.2013.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Revised: 03/28/2013] [Accepted: 05/01/2013] [Indexed: 12/13/2022]
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15
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Iqbal J, Li W, Ullah K, Hasan M, Linna G, Awan U, Zhang Y, Batool S, Qing H, Deng Y. Study of rat hypothalamic proteome by HPLC/ESI ion trap and HPLC/ESI-Q-TOF MS. Proteomics 2013; 13:2455-68. [DOI: 10.1002/pmic.201300073] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 04/23/2013] [Accepted: 05/03/2013] [Indexed: 02/07/2023]
Affiliation(s)
- Javed Iqbal
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Wang Li
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Kaleem Ullah
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Murtaza Hasan
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Guo Linna
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Umer Awan
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Yongqian Zhang
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Sajida Batool
- Wolfson Centre for Stem cells; Tissue Engineering and Modelling (STEM), University of Nottingham; UK
| | - Hong Qing
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
| | - Yulin Deng
- School of Life Sciences; Beijing Institute of Technology; Beijing P. R. China
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16
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Campello L, Esteve-Rudd J, Cuenca N, Martín-Nieto J. The ubiquitin-proteasome system in retinal health and disease. Mol Neurobiol 2013; 47:790-810. [PMID: 23339020 DOI: 10.1007/s12035-012-8391-5] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Accepted: 12/18/2012] [Indexed: 10/27/2022]
Abstract
The ubiquitin-proteasome system (UPS) is the main intracellular pathway for modulated protein turnover, playing an important role in the maintenance of cellular homeostasis. It also exerts a protein quality control through degradation of oxidized, mutant, denatured, or misfolded proteins and is involved in many biological processes where protein level regulation is necessary. This system allows the cell to modulate its protein expression pattern in response to changing physiological conditions and provides a critical protective role in health and disease. Impairments of UPS function in the central nervous system (CNS) underlie an increasing number of genetic and idiopathic diseases, many of which affect the retina. Current knowledge on the UPS composition and function in this tissue, however, is scarce and dispersed. This review focuses on UPS elements reported in the retina, including ubiquitinating and deubiquitinating enzymes (DUBs), and alternative proteasome assemblies. Known and inferred roles of protein ubiquitination, and of the related, SUMO conjugation (SUMOylation) process, in normal retinal development and adult homeostasis are addressed, including modulation of the visual cycle and response to retinal stress and injury. Additionally, the relationship between UPS dysfunction and human neurodegenerative disorders affecting the retina, including Alzheimer's, Parkinson's, and Huntington's diseases, are dealt with, together with numerous instances of retina-specific illnesses with UPS involvement, such as retinitis pigmentosa, macular degenerations, glaucoma, diabetic retinopathy (DR), and aging-related impairments. This information, though still basic and limited, constitutes a suitable framework to be expanded in incoming years and should prove orientative toward future therapy design targeting sight-affecting diseases with a UPS underlying basis.
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Affiliation(s)
- Laura Campello
- Departamento de Fisiología, Genética y Microbiología, Facultad de Ciencias, Universidad de Alicante, 03080 Alicante, Spain
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17
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DNA promoter methylation as a diagnostic and therapeutic biomarker in gallbladder cancer. Clin Epigenetics 2012; 4:11. [PMID: 22794276 PMCID: PMC3465181 DOI: 10.1186/1868-7083-4-11] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Accepted: 06/08/2012] [Indexed: 12/13/2022] Open
Abstract
Gallbladder cancer is an infrequent neoplasia with noticeable geographical variations in its incidence around the world. In Chile, it is the main cause of death owing to cancer in women over 40 years old, with mortality rates up to 16.5 per 100,000 cases. The prognosis is poor with few therapeutic options; in advanced cases there is only a 10% survival at 5 years. Several studies mention the possible role of DNA methylation in gallbladder carcinogenesis. This epigenetic modification affects tumor suppressor genes involved in regulation pathways, cell cycle control, cell adhesion and extracellular matrix degradation, in a sequential and cumulative way. Determining DNA methylation patterns would allow them to be used as biomarkers for the early detection, diagnosis, prognosis and/or therapeutic selection in gallbladder cancer.
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18
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McGinn MJ, Colello RJ, Sun D. Age-related proteomic changes in the subventricular zone and their association with neural stem/progenitor cell proliferation. J Neurosci Res 2012; 90:1159-68. [PMID: 22344963 DOI: 10.1002/jnr.23012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2011] [Revised: 11/23/2011] [Accepted: 11/26/2011] [Indexed: 01/26/2023]
Abstract
In the mammalian central nervous system, generation of new neurons persists in the subventricular zone (SVZ) throughout life. However, the capacity for neurogenesis in this region declines with aging. Recent studies have examined the degree of these age-related neurogenic declines and the changes of cytoarchitecture of the SVZ with aging. However, little is known about the molecular changes in the SVZ with aging. In this study, we dissected the SVZs from rats aged postnatal day 28, 3 months, and 24 months. The SVZ tissues were processed for 2-D gel electrophoresis to identify protein changes following aging. Protein spots were subsequently subjected to mass spectrometry analysis to compare age-related alterations in the SVZ proteome. We also examined the level of cell proliferation in the SVZ in animals of these three age groups by using bromodeoxyuridine labeling. We found significant age-related changes in the expression of several proteins that play critical roles in the proliferation and survival of neural stem/progenitor cells in the SVZ. Among these proteins, glial fibrillary acidic protein, ubiquitin carboxy terminal hydrolase 1, glutathione S-transferase omega, and preproalbumin were increased with aging, whereas collapsin response-mediated protein 4 (CRMP-4), CRMP-5, and microsomal protease ER60 exhibited declines with aging. We have also observed a significant decline of neural stem/progenitor cell proliferation in the SVZ with aging. These alterations in protein expression in the SVZ with aging likely underlie the diminishing proliferative capacity of stem/progenitor cells in the aging brain.
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Affiliation(s)
- Melissa J McGinn
- Department of Anatomy and Neurobiology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia 23298, USA
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19
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Zong J, Guo C, Liu S, Sun MZ, Tang J. Proteomic research progress in lymphatic metastases of cancers. Clin Transl Oncol 2012; 14:21-30. [DOI: 10.1007/s12094-012-0757-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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20
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Xilouri M, Kyratzi E, Pitychoutis PM, Papadopoulou-Daifoti Z, Perier C, Vila M, Maniati M, Ulusoy A, Kirik D, Park DS, Wada K, Stefanis L. Selective neuroprotective effects of the S18Y polymorphic variant of UCH-L1 in the dopaminergic system. Hum Mol Genet 2011; 21:874-89. [DOI: 10.1093/hmg/ddr521] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Potential prognostic marker ubiquitin carboxyl-terminal hydrolase-L1 does not predict patient survival in non-small cell lung carcinoma. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2011; 30:79. [PMID: 21878121 PMCID: PMC3180428 DOI: 10.1186/1756-9966-30-79] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Accepted: 08/30/2011] [Indexed: 12/29/2022]
Abstract
Background Ubiquitin Carboxyl-Terminal Hydrolase-L1 (UCH-L1) is a deubiquitinating enzyme that is highly expressed throughout the central and peripheral nervous system and in cells of the diffuse neuroendocrine system. Aberrant function of UCH-L1 has been associated with neurological disorders such as Parkinson's disease and Alzheimer's disease. Moreover, UCH-L1 exhibits a variable expression pattern in cancer, acting either as a tumour suppressor or promoter, depending on the type of cancer. In non-small cell lung carcinoma primary tumour samples, UCH-L1 is highly expressed and is associated with an advanced tumour stage. This suggests UCH-L1 may be involved in oncogenic transformation and tumour invasion in NSCLC. However, the functional significance of UCH-L1 in the progression of NSCLC is unclear. The aim of this study was to investigate the role of UCH-L1 using NSCLC cell line models and to determine if it is clinically relevant as a prognostic marker for advanced stage disease. Methods UCH-L1 expression in NSCLC cell lines H838 and H157 was modulated by siRNA-knockdown, and the phenotypic changes were assessed by flow cytometry, haematoxylin & eosin (H&E) staining and poly (ADP-ribose) polymerase (PARP) cleavage. Metastatic potential was measured by the presence of phosphorylated myosin light chain (MLC2). Tumour microarrays were examined immunohistochemically for UCH-L1 expression. Kaplan-Meier curves were generated using UCH-L1 expression levels and patient survival data extracted from Gene Expression Omnibus data files. Results Expression of UCH-L1 was decreased by siRNA in both cell lines, resulting in increased cell death in H838 adenocarcinoma cells but not in the H157 squamous cell line. However, metastatic potential was reduced in H157 cells. Immunohistochemical staining of UCH-L1 in patient tumours confirmed it was preferentially expressed in squamous cell carcinoma rather than adenocarcinoma. However the Kaplan-Meier curves generated showed no correlation between UCH-L1 expression levels and patient outcome. Conclusions Although UCH-L1 appears to be involved in carcinogenic processes in NSCLC cell lines, the absence of correlation with patient survival indicates that caution is required in the use of UCH-L1 as a potential prognostic marker for advanced stage and metastasis in lung carcinoma.
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22
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Morphologic and Biochemical Characterization of Brain Injury in a Model of Controlled Blast Overpressure Exposure. ACTA ACUST UNITED AC 2010; 69:795-804. [DOI: 10.1097/ta.0b013e3181bbd885] [Citation(s) in RCA: 130] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Esteve-Rudd J, Campello L, Herrero MT, Cuenca N, Martín-Nieto J. Expression in the mammalian retina of parkin and UCH-L1, two components of the ubiquitin-proteasome system. Brain Res 2010; 1352:70-82. [PMID: 20638372 DOI: 10.1016/j.brainres.2010.07.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2010] [Revised: 06/30/2010] [Accepted: 07/07/2010] [Indexed: 10/19/2022]
Abstract
The ubiquitin-proteasome system (UPS) functions as a major degradation pathway for misfolded and damaged proteins with an important neuroprotective role in the CNS against a variety of cellular stresses. Parkin and ubiquitin C-terminal hydrolase L1 (UCH-L1) are two relevant components of the UPS associated with a number of neurodegenerative disorders. We here address the expression profile of parkin and UCH-L1 in the mammalian retina, with special emphasis on primates. We describe for the first time the presence of parkin in the retina of mammals, including humans. Parkin and UCH-L1 genes were expressed at the mRNA and protein levels in the retina of all species examined. The immunolocalization pattern of parkin was quite widespread, being expressed by most retinal neuronal types, including photoreceptors. UCH-L1 was localized to horizontal cells and specific subtypes of bipolar and amacrine cells, as well as to ganglion cells and their axons forming the nerve fiber layer. In rodents no UCH-L1 immunoreactivity was found in cone or rod photoreceptors, whereas this protein was present along the whole length of cones in all other mammals. Remarkably, UCH-L1 was expressed by dopaminergic amacrine cells of primates. The ample distribution of parkin and UCH-L1 in the mammalian retina, together with the crucial role played by the UPS in normal neuronal physiology in the brain, points to a participation of these two proteins in the ubiquitin-proteasomal pathway of protein degradation in most retinal cell types, where they could exert a protective function against neuronal stress.
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Affiliation(s)
- Julián Esteve-Rudd
- Departamento de Fisiología, Genética y Microbiología, Facultad de Ciencias, Universidad de Alicante, Alicante, Spain
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24
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Kawaguchi T, Yamagishi SI, Itou M, Okuda K, Sumie S, Kuromatsu R, Sakata M, Abe M, Taniguchi E, Koga H, Harada M, Ueno T, Sata M. Pigment epithelium-derived factor inhibits lysosomal degradation of Bcl-xL and apoptosis in HepG2 cells. THE AMERICAN JOURNAL OF PATHOLOGY 2009; 176:168-76. [PMID: 19948828 DOI: 10.2353/ajpath.2010.090242] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Pigment epithelium-derived factor (PEDF) has several biological actions on tumor cells, but its effects are cell-type dependent. The aim of this study was to examine the pathophysiological role of PEDF in hepatocellular carcinoma (HCC). PEDF expression was examined in various hepatoma cell lines and human HCC tissues, and was seen in various hepatoma cell lines including HepG2 cells. In human HCC tissues, PEDF expression was higher than in adjacent non-HCC tissues. In addition, serum PEDF levels were higher in HCC patients than in non-HCC patients, and curative treatment of HCC caused significant reductions in serum PEDF levels compared with pretreatment levels. In vitro experiments, camptothecin (CPT) was used to induce apoptosis and the effect of PEDF was investigated by knockdown of the PEDF gene in CPT-treated HepG2 cells. Knockdown of the PEDF gene enhanced CPT-induced apoptosis, simultaneously down-regulating Bcl-xL expression in HepG2 cells. Expression of apoptosis-related molecules and effects of bafilomycin A1 on CPT-induced apoptosis were also examined in PEDF gene knockdown HepG2 cells. Treatment with bafilomycin A1 suppressed CPT-induced decreases in Bcl-xL expression and increases in apoptosis in PEDF gene knockdown HepG2 cells. PEDF may, therefore, exert anti-apoptotic effects through inhibition of lysosomal degradation of Bcl-xL in CPT-treated HepG2 cells.
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Affiliation(s)
- Takumi Kawaguchi
- Department of Digestive Disease Information and Research, Division of Gastroenterology, Department of Medicine, Kurume University School of Medicine, 67 Asahi-machi, Kurume 830-0011, Japan.
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25
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Seliger B, Handke D, Schabel E, Bukur J, Lichtenfels R, Dammann R. Epigenetic control of the ubiquitin carboxyl terminal hydrolase 1 in renal cell carcinoma. J Transl Med 2009; 7:90. [PMID: 19857250 PMCID: PMC2775027 DOI: 10.1186/1479-5876-7-90] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Accepted: 10/26/2009] [Indexed: 12/12/2022] Open
Abstract
Background The ubiquitin carboxyl-terminal hydrolase 1 (UCHL1) gene involved in the regulation of cellular ubiquitin levels plays an important role in different cellular processes including cell growth and differentiation. Aberrant expression of UCHL1 has been found in a number of human solid tumors including renal cell carcinoma (RCC). In RCC, UCHL1 overexpression is associated with tumor progression and an altered von Hippel Lindau gene expression. Methods To determine the underlying mechanisms for the heterogeneous UCHL1 expression pattern in RCC the UCHL1 promoter DNA methylation status was determined in 17 RCC cell lines as well as in 32 RCC lesions and corresponding tumor adjacent kidney epithelium using combined bisulfite restriction analysis as well as bisulfite DNA sequencing. Results UCHL1 expression was found in all 32 tumor adjacent kidney epithelium samples. However, the lack of or reduced UCHL1 mRNA and/or protein expression was detected in 13/32 RCC biopsies and 7/17 RCC cell lines and due to either a total or partial methylation of the UCHL1 promoter DNA. Upon 2'-deoxy-5-azacytidine treatment an induction of UCHL1 mRNA and protein expression was found in 9/17 RCC cell lines, which was linked to the demethylation degree of the UCHL1 promoter DNA. Conclusion Promoter hypermethylation represents a mechanism for the silencing of the UCHL1 gene expression in RCC and supports the concept of an epigenetic control for the expression of UCHL1 during disease progression.
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Affiliation(s)
- Barbara Seliger
- Martin Luther University Halle-Wittenberg, Institute of Medical Immunology, Halle, Germany.
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A proteomic study on a human osteosarcoma cell line Saos-2 treated with diallyl trisulfide. Anticancer Drugs 2009; 20:702-12. [DOI: 10.1097/cad.0b013e32832e89c7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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27
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Setsuie R, Sakurai M, Sakaguchi Y, Wada K. Ubiquitin dimers control the hydrolase activity of UCH-L3. Neurochem Int 2009; 54:314-21. [DOI: 10.1016/j.neuint.2008.12.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 12/03/2008] [Accepted: 12/15/2008] [Indexed: 11/17/2022]
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28
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Sung JH, Cho EH, Kim MO, Koh PO. Identification of proteins differentially expressed by melatonin treatment in cerebral ischemic injury--a proteomics approach. J Pineal Res 2009; 46:300-6. [PMID: 19196433 DOI: 10.1111/j.1600-079x.2008.00661.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We previously reported that melatonin protects neuronal cells against ischemic brain damage. In this study, we identified proteins that were differentially expressed by melatonin treatment during ischemic brain injury. Rats were subjected to cerebral ischemia by middle cerebral artery occlusion (MCAO). Adult male rats were treated with melatonin (5 mg/kg) or vehicle prior to MCAO and brains were collected at 24 hr after MCAO. Proteins derived from the cerebral cortex were analyzed using two-dimensional gel electrophoresis. Protein spots with a greater than 2.5-fold change in intensity were identified by mass spectrometry. Among these proteins, gamma-enolase, stathmin, thioredoxin, peroxiredoxin-6, hippocalcin, protein phosphatase 2A, adenosylhomocysteinase, ubiquitin carboxy-terminal hydrolase L1, and NAD-specific isocitrate dehydrogenase subunit alpha were significantly decreased in the vehicle-treated group in comparison to the melatonin-treated group. The identified proteins consist of cell differentiation and stabilization proteins, as well as an antioxidant enzyme. In contrast, dehydroprimidinase-related protein 2 (DRP-2), a target of protein oxidation in neurodegeneration, was significantly increased in vehicle-treated animals, while melatonin prevented the injury-induced increase of DRP-2. Thus, the results of this study suggest that melatonin prevents cell death resulting from ischemic brain injury and that its neuroprotective effects are mediated by both the up- and down-regulation of various proteins.
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Affiliation(s)
- Jin-Hee Sung
- Department of Anatomy, College of Veterinary Medicine and Research Institute of Life Science, Gyeongsang National University, Jinju, South Korea
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Membrane-associated farnesylated UCH-L1 promotes alpha-synuclein neurotoxicity and is a therapeutic target for Parkinson's disease. Proc Natl Acad Sci U S A 2009; 106:4635-40. [PMID: 19261853 DOI: 10.1073/pnas.0806474106] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ubiquitin C-terminal hydrolase-L1 (UCH-L1) is linked to Parkinson's disease (PD) and memory and is selectively expressed in neurons at high levels. Its expression pattern suggests a function distinct from that of its widely expressed homolog UCH-L3. We report here that, in contrast to UCH-L3, UCH-L1 exists in a membrane-associated form (UCH-L1(M)) in addition to the commonly studied soluble form. C-terminal farnesylation promotes the association of UCH-L1 with cellular membranes, including the endoplasmic reticulum. The amount of UCH-L1(M) in transfected cells is shown to correlate with the intracellular level of alpha-synuclein, a protein whose accumulation is associated with neurotoxicity and the development of PD. Reduction of UCH-L1(M) in cell culture models of alpha-synuclein toxicity by treatment with a farnesyltransferase inhibitor (FTI-277) reduces alpha-synuclein levels and increases cell viability. Proteasome function is not affected by UCH-L1(M), suggesting that it may negatively regulate the lysosomal degradation of alpha-synuclein. Therefore, inhibition of UCH-L1 farnesylation may be a therapeutic strategy for slowing the progression of PD and related synucleinopathies.
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30
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Peng PH, Huang HS, Lee YJ, Chen YS, Ma MC. Novel role for the δ-opioid receptor in hypoxic preconditioning in rat retinas. J Neurochem 2009; 108:741-54. [DOI: 10.1111/j.1471-4159.2008.05807.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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31
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Yasuda T, Nihira T, Ren YR, Cao XQ, Wada K, Setsuie R, Kabuta T, Wada K, Hattori N, Mizuno Y, Mochizuki H. Effects of UCH-L1 on α-synuclein over-expression mouse model of Parkinson’s disease. J Neurochem 2009; 108:932-44. [DOI: 10.1111/j.1471-4159.2008.05827.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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32
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Meller R. The role of the ubiquitin proteasome system in ischemia and ischemic tolerance. Neuroscientist 2009; 15:243-60. [PMID: 19181875 DOI: 10.1177/1073858408327809] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Ubiquitin modification targets a protein for rapid degradation by the proteasome. However, polyubiquitination of proteins can result in multiple functions depending on the topology of the ubiquitin chain. Therefore, ubiquitin signaling offers a more complex and versatile biology compared with many other posttranslational modifications. One area of potential for the application of this knowledge is the field of ischemia-induced brain damage, as occurs following a stroke. The ubiquitin proteasome system may exert a dual role on neuronal outcome following ischemia. Harmful ischemia results in an overload of the ubiquitin proteasome system, and blocking the proteasome reduces brain infarction following ischemia. However, the rapid and selective degradation of proteins following brief ischemia results in endogenous protection against ischemia. Therefore, further understanding of the molecular signaling mechanisms that regulate the ubiquitin proteasome system may reveal novel therapeutic targets to reduce brain damage when ischemia is predicted or reduce the activation of the cell death mechanisms and the inflammatory response following stroke. The aim of this review is to discuss some of the recent advances in the understanding of protein ubiquitination and its implications for novel stroke therapies.
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Affiliation(s)
- Robert Meller
- Legacy Clinical Research and Technology Center, Portland, Oregon, USA.
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33
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Goto A, Wang YL, Kabuta T, Setsuie R, Osaka H, Sawa A, Ishiura S, Wada K. Proteomic and histochemical analysis of proteins involved in the dying-back-type of axonal degeneration in the gracile axonal dystrophy (gad) mouse. Neurochem Int 2008; 54:330-8. [PMID: 19154771 DOI: 10.1016/j.neuint.2008.12.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2008] [Revised: 12/12/2008] [Accepted: 12/17/2008] [Indexed: 11/25/2022]
Abstract
Local axonal degeneration is a common pathological feature of peripheral neuropathies and neurodegenerative disorders of the central nervous system, including Alzheimer's disease, Parkinson's disease, and stroke; however, the underlying molecular mechanism is not known. Here, we analyzed the gracile axonal dystrophy (gad) mouse, which displays the dying-back-type of axonal degeneration in sensory neurons, to find the molecules involved in the mechanism of axonal degeneration. The gad mouse is analogous to a null mutant of ubiquitin carboxyl-terminal hydrolase L1 (UCH-L1). UCH-L1 is a deubiquitinating enzyme expressed at high levels in neurons, as well as testis and ovary. In addition, we recently discovered a new function of UCH-L1-namely to bind to and stabilize mono-ubiquitin in neurons, and found that the level of mono-ubiquitin was decreased in neurons, especially in axons of the sciatic nerve, in gad mice. The low level of ubiquitin suggests that the target proteins of the ubiquitin proteasome system are not sufficiently ubiquitinated and thus degraded in the gad mouse; therefore, these proteins may be the key molecules involved in axonal degeneration. To identify molecules involved in axonal degeneration in gad mice, we compared protein expression in sciatic nerves between gad and wild-type mice at 2 and 12 weeks old, using two-dimensional difference gel electrophoresis. As a result, we found age-dependent accumulation of several proteins, including glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and 14-3-3, in gad mice compared with wild-type mice. Histochemical analyses demonstrated that GAPDH and 14-3-3 were localized throughout axons in both gad and wild-type mice, but GAPDH accumulated in the axons of gad mice. Recently, it has been suggested that a wide range of neurodegenerative diseases are characterized by the accumulation of intracellular and extracellular protein aggregates, and it has been reported that oxidative stress causes the aggregation of GAPDH. Furthermore, histochemical analysis demonstrated that sulfonated GAPDH, a sensor of oxidative stress that elicits cellular dysfunction, was expressed in the axons of gad mice, and 4-hydroxy-2-nonenal, a major marker of oxidative stress, was also only detected in gad mice. Our findings suggest that GAPDH may participate in a process of the dying-back-type of axonal degeneration in gad mice and may provide valuable insight into the mechanisms of axonal degeneration.
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Affiliation(s)
- Akiko Goto
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Ogawahigashi, Kodaira, Tokyo, Japan
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Wang WJ, Li QQ, Xu JD, Cao XX, Li HX, Tang F, Chen Q, Yang JM, Xu ZD, Liu XP. Over-expression of ubiquitin carboxy terminal hydrolase-L1 induces apoptosis in breast cancer cells. Int J Oncol 2008; 33:1037-45. [PMID: 18949367 DOI: 10.3892/ijo_00000092] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Ubiquitin carboxy terminal hydrolase-L1 (UCH-L1) belongs to the UCH proteases family that deubiquitinates ubiquitin-protein conjugates in the ubiquitin-proteasome system. Previous research showed that UCH-L1 was expressed in mouse retinal cells and testicular germ cells, and its function was associated with apoptosis. But it is still unclear whether UCH-L1 is concerned with apoptosis in tumor cells. In order to clarify the role of UCH-L1 in tumor cells, multi-drug resistance (MDR) human breast carcinoma cell line MCF7/Adr, that expresses relatively high UCH-L1, and its parental cell line MCF7, that expresses relatively low UCH-L1, were chosen for this study. We transfected pcDNA3.1-UCH-L1 plasmid and UCH-L1 siRNA into MCF7 and MCF7/Adr cells, respectively. Using 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) assay, western blot, Hoechst 33258 staining assay and flow cytometry, we found that over-expression of UCH-L1 in MCF7 cells induced apoptosis. On the other hand, silencing of UCH-L1 in MCF7/Adr cells led to the opposite effect. Moreover, to explore the mechanism underling these observations, we further investigated the expression of phospho-Akt and its downstream signal phospho-IkB-alpha and other signal molecules including Fas, Fas-L, Trail, DR4, DR5, Bax, cytochrome C, active caspase-3, phospho-p53, phospho-Mdm-2, Bcl-2, Bcl-xL, p21 and p27. The results indicated that the process of apoptosis triggered by UCH-L1 is, at least in part, probably through Phosphoinositide 3-kinase (PI3K)/Akt signal pathway. Our findings suggest that modulating the ubiquitination and deubiquitination pathway could be a novel method for tumor therapy.
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Affiliation(s)
- Wen-Juan Wang
- Department of Pathology, Shanghai Medical College, Fudan University, Shanghai 200032, PR China
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Tokumaru Y, Yamashita K, Kim MS, Park HL, Osada M, Mori M, Sidransky D. The role of PGP9.5 as a tumor suppressor gene in human cancer. Int J Cancer 2008; 123:753-9. [PMID: 18512240 DOI: 10.1002/ijc.23354] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
PGP9.5 is a controversial molecule from an oncologic point of view. We recently identified frequent methylation of PGP9.5 gene exclusively in primary head and neck squamous cell carcinoma (HNSCC), suggesting that it could be a tumor suppressor gene. On the other hand, PGP9.5 was reported to be overexpressed in a subset of human cancers presumably due to intrinsic oncogenic properties or as a result of transformation. To demonstrate that PGP9.5 possesses tumor suppressive activity, we examined forced expression by stable transfection of PGP9.5 in 4 HNSCC cell lines. Although all 4 cell lines demonstrated reduced log growth rates in culture after transfection, only 2 cell lines with wild type p53 (011, 022) demonstrated decreased growth in soft agar. In 2 cell lines with mutant p53 (013, 019), we observed no altered growth in soft agar and increased sensitivity to UV irradiation. We then tested for and found a high frequency of promoter methylation in a larger panel of primary tumors including HNSCC, esophageal SCC, gastric, lung, prostate and hepatocellular carcinoma. Our data support the notion that PGP9.5 is a tumor suppressor gene that is inactivated by promoter methylation or gene deletion in several types of human cancers.
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Affiliation(s)
- Yutaka Tokumaru
- Department of Otolaryngology, Head and Neck Cancer Research Institute, Johns Hopkins University, Baltimore, MD, USA
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SUKHTHANKAR MUGDHA, YAMAGUCHI KIYOSHI, LEE SEONGHO, MCENTEE MICHAELF, ELING THOMASE, HARA YUKIHIKO, BAEK SEUNGJOON. A green tea component suppresses posttranslational expression of basic fibroblast growth factor in colorectal cancer. Gastroenterology 2008; 134:1972-80. [PMID: 18549879 PMCID: PMC2562743 DOI: 10.1053/j.gastro.2008.02.095] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2007] [Revised: 02/19/2008] [Accepted: 02/28/2008] [Indexed: 12/14/2022]
Abstract
BACKGROUND & AIMS Green tea catechins are known to have anticarcinogenic effects. Epigallocatechin-3-gallate (EGCG) accounts for almost 50% of the total catechin content in green tea extract and has very potent antioxidant effects. EGCG also inhibits angiogenesis, possibly through the inhibition of proangiogenic factors including vascular endothelial growth factor (VEGF) and basic fibroblast growth factor (bFGF), which in turn, inhibits tumor growth and metastasis. However, the exact molecular mechanism by which EGCG suppresses bFGF expression is not known. Our objective was to elucidate the molecular mechanisms by which EGCG inhibits bFGF expression in colorectal cancer. METHODS We examined posttranslational regulation of bFGF by EGCG in human colorectal cancer cells. We also examined bFGF in intestinal tumor formation of APC(Min/+) mice with and without catechin treatment. RESULTS The bFGF protein was quickly degraded in the presence of EGCG, but a proteasome inhibitor suppressed this degradation. EGCG was also found to increase ubiquitination of bFGF and trypsin-like activity of the 20S proteasome, thereby resulting in the degradation of bFGF protein. Furthermore, EGCG suppressed tumor formation in APC(Min/+) mice, compared with vehicle-treated mice, in association with reduced bFGF expression. CONCLUSIONS The ubiquitin-proteasome degradation pathway contributes significantly to down-regulation of bFGF expression by EGCG. Catechin compounds have fewer adverse effects than chemotherapeutic agents and hence can be used as proof-of-concept in cancer therapeutics to suppress growth and metastasis by targeting proteins such as bFGF.
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Affiliation(s)
- MUGDHA SUKHTHANKAR
- Laboratory of Environmental Carcinogenesis, Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - KIYOSHI YAMAGUCHI
- Laboratory of Environmental Carcinogenesis, Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - SEONG-HO LEE
- Laboratory of Environmental Carcinogenesis, Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - MICHAEL F. MCENTEE
- Laboratory of Environmental Carcinogenesis, Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
| | - THOMAS E. ELING
- Laboratory of Molecular Carcinogenesis, NIEHS, Research Triangle Park, North Carolina
| | - YUKIHIKO HARA
- Mitsui Norin Co., Ltd, Food Research Lab, Miyabara, Fujieda City, Japan
| | - SEUNG JOON BAEK
- Laboratory of Environmental Carcinogenesis, Department of Pathobiology, College of Veterinary Medicine, University of Tennessee, Knoxville, Tennessee
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Sarkar P, Sarkar S, Ramesh V, Kim H, Barnes S, Kulkarni A, Hall JC, Wilson BL, Thomas RL, Pellis NR, Ramesh GT. Proteomic analysis of mouse hypothalamus under simulated microgravity. Neurochem Res 2008; 33:2335-41. [PMID: 18473167 DOI: 10.1007/s11064-008-9738-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2008] [Accepted: 04/25/2008] [Indexed: 01/23/2023]
Abstract
Exposure to altered microgravity during space travel induces changes in the brain and these are reflected in many of the physical behavior seen in the astronauts. The vulnerability of the brain to microgravity stress has been reviewed and reported. Identifying microgravity-induced changes in the brain proteome may aid in understanding the impact of the microgravity environment on brain function. In our previous study we have reported changes in specific proteins under simulated microgravity in the hippocampus using proteomics approach. In the present study the profiling of the hypothalamus region in the brain was studied as a step towards exploring the effect of microgravity in this region of the brain. Hypothalamus is the critical region in the brain that strictly controls the pituitary gland that in turn is responsible for the secretion of important hormones. Here we report a 2-dimensional gel electrophoretic analysis of the mouse hypothalamus in response to simulated microgravity. Lowered glutathione and differences in abundance expression of seven proteins were detected in the hypothalamus of mice exposed to microgravity. These changes included decreased superoxide dismutase-2 (SOD-2) and increased malate dehydrogenase and peroxiredoxin-6, reflecting reduction of the antioxidant system in the hypothalamus. Taken together the results reported here indicate that oxidative imbalance occurred in the hypothalamus in response to simulated microgravity.
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Affiliation(s)
- Poonam Sarkar
- Department of Pharmacology and Toxicology, University of Alabama, Birmingham, AL, 35294, USA
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Kobeissy FH, Warren MW, Ottens AK, Sadasivan S, Zhang Z, Gold MS, Wang KKW. Psychoproteomic analysis of rat cortex following acute methamphetamine exposure. J Proteome Res 2008; 7:1971-83. [PMID: 18452277 DOI: 10.1021/pr800029h] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Methamphetamine (METH) is recognized as one of the most abused psychostimulants in the United States. METH is an illicit drug that is known to exert neurotoxic effects on both dopaminergic and serotonergic neural systems both in vivo and in vitro. Our laboratory and others have been studying the biochemical mechanisms underlying METH-induced neurotoxicity. Here, we applied a novel psychoproteomic approach to evaluate METH-induced neurotoxicity following acute METH administration (4x10 mg/kg, ip injections every 1 h). Samples of cortical tissue collected 24 h post METH treatment were pooled, processed and analyzed via a selective psychoproteomic platform. Protein separation was performed using our previously established offline tandem cation-anion exchange chromatography-SDS-1D-PAGE platform (CAX-PAGE). Gel bands exhibiting 2 or more fold changes were extracted, trypsinized and subjected to reversed-phase liquid chromatography-tandem mass spectrometry (RPLC-MS/MS) analyses for protein identification. Differential changes of the selected proteins were further confirmed by quantitative immunoblotting. We identified 82 differentially expressed proteins, 40 of which were downregulated and 42 of which were upregulated following acute METH treatment. Proteins that decreased in abundance included collapsin response mediator protein-2 (CRMP-2), superoxide dismutase 1 (SOD 1), phosphatidylethanolamine-binding protein-1 (PEBP-1) and mitogen activated kinase kinase-1 (MKK-1). Proteins that increased in abundance included authophagy-linked microtubule-associated protein light chain 3 (LC3), synapsin-1, and Parkinsonism linked ubiquitin carboxy-terminal hydroxylase-L1 (UCH-L1). Lastly, we used these differentially expressed protein subsets to construct a "psychoproteomic" spectrum map in an effort to uncover potential protein interactions relevant to acute METH neurotoxicity.
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Affiliation(s)
- Firas H Kobeissy
- Center for Neuroproteomics and Biomarkers Research, Department of Psychiatry, College of Medicine, McKnight Brain Institute of the University of Florida, Gainesville, Florida 32610, USA.
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Kyratzi E, Pavlaki M, Stefanis L. The S18Y polymorphic variant of UCH-L1 confers an antioxidant function to neuronal cells. Hum Mol Genet 2008; 17:2160-71. [DOI: 10.1093/hmg/ddn115] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
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Yamauchi T, Sakurai M, Abe K, Matsumiya G, Sawa Y. Ubiquitin-mediated stress response in the spinal cord after transient ischemia. Stroke 2008; 39:1883-9. [PMID: 18388347 DOI: 10.1161/strokeaha.106.455832] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND AND PURPOSE Vulnerability of motor neurons in the spinal cord against ischemia is considered to play an important role in the development of delayed paraplegia after surgery of the thoracic aorta. However, the reasons for such vulnerability are not fully understood. Recently, the ubiquitin system has been reported to participate in neuronal cell death. In the present study, we investigated the expression of ubiquitin system molecules and discussed the relationship between the vulnerability and the ubiquitin system after transient ischemia in the spinal cord. METHODS Fifteen minutes of spinal cord ischemia in rabbits was applied with the use of a balloon catheter. In this model, the spinal motor neuron shows selectively delayed neuronal death, whereas other spinal neurons such as interneurons survive. Immunohistochemical analysis and Western blotting for ubiquitin system molecules, ubiquitin, deubiquitylating enzyme (ubiquitin carboxy-terminal hydrolase 1), and ubiquitin-ligase parkin were examined. RESULTS In cytoplasm, ubiquitin and ubiquitin carboxy-terminal hydrolase 1 were strongly induced both in interneuron and motor neuron at the early stage of reperfusion, but the sustained expression was observed only in motor neuron. Parkin was induced strongly at 3 hours after the reperfusion, but the immunoreactivity returned to the sham control level at 6 hours in both neurons. In the nuclei, ubiquitin, ubiquitin carboxy-terminal hydrolase 1, and parkin were strongly induced in interneuron, whereas no upregulation of these proteins was observed in motor neuron. CONCLUSIONS These results indicate that the vulnerability of motor neuron of the spinal cord might be partially attributed to the different response in ubiquitin-mediated stress response after transient ischemia.
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Affiliation(s)
- Takashi Yamauchi
- Department of Cardiovascular Surgery, Osaka University Graduate school of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.
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Sun J, Ying M, Li H, Shang X, He Y, Chen K, Cheng H, Zhou R. Role of UCH-L1/ubiquitin in acute testicular ischemia–reperfusion injury. Biochem Biophys Res Commun 2008; 366:539-44. [DOI: 10.1016/j.bbrc.2007.11.176] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2007] [Accepted: 11/30/2007] [Indexed: 11/15/2022]
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Molina L, Grimaldi M, Robert-Hebmann V, Espert L, Varbanov M, Devaux C, Granier C, Biard-Piechaczyk M. Proteomic analysis of the cellular responses induced in uninfected immune cells by cell-expressed X4 HIV-1 envelope. Proteomics 2007; 7:3116-30. [PMID: 17676665 DOI: 10.1002/pmic.200700306] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
HIV-1 envelope gp120 and gp41 glycoproteins (Env), expressed at the cell surface, induce uninfected CD4 T-cell death, but the molecular mechanisms leading to this demise are still largely unknown. To better understand these events, we analyzed by a proteomic approach the differential protein expression profile of two types of uninfected immune cells after their coculture for 1-3 days with cells that express, or not, Env. First, umbilical cord blood mononuclear cells (UCBMCs) were used to approach the in vivo situation, i.e., blood uninfected naive cells that encounter infected cells. Second, we used the A2.01/CD4.403 T-cell line expressing wild type CXCR4 and a truncated form of CD4 that still undergoes Env-mediated apoptosis, independently of CD4 signaling. After coculture with cells expressing Env, 35 and 39 proteins presenting an altered expression in UCBMCs and the A2.01/CD4.403 T-cell line, respectively, were identified by mass-spectrometry. Whatever the cell type analyzed, the majority of these proteins are involved in degradation processes, redox homeostasis, metabolism and cytoskeleton dynamics, and linked to mitochondrial functions. This study provides new insights into the events that sequentially occur in bystander T lymphocytes after contact with HIV-infected cells and leading, finally, to apoptotic cell death.
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Affiliation(s)
- Laurence Molina
- Centre National de la Recherche Scientifique (CNRS) FRE3009, Complex System Modelling and Engineering for Diagnostic, Faculté de Pharmacie, Montpellier, France
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Setsuie R, Wada K. The functions of UCH-L1 and its relation to neurodegenerative diseases. Neurochem Int 2007; 51:105-11. [PMID: 17586089 DOI: 10.1016/j.neuint.2007.05.007] [Citation(s) in RCA: 186] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2007] [Revised: 05/07/2007] [Accepted: 05/09/2007] [Indexed: 01/20/2023]
Abstract
Parkinson's disease (PD) and Alzheimer's disease (AD), the most common neurodegenerative diseases, are caused by both genetic and environmental factors. Ubiquitin carboxy-terminal hydrolase L1 (UCH-L1) is a deubiquitinating enzyme that is involved in the pathogenesis of both of these neurodegenerative diseases. Several functions of UCH-L1, other than as an ubiquitin hydrolase, have been proposed; these include acting as an ubiquitin ligase and stabilizing mono-ubiquitin. This review focuses on recent findings on the functions and the regulation of UCH-L1, in particular those that relate to PD and AD.
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Affiliation(s)
- Rieko Setsuie
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo 187-8502, Japan
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Meray RK, Lansbury PT. Reversible monoubiquitination regulates the Parkinson disease-associated ubiquitin hydrolase UCH-L1. J Biol Chem 2007; 282:10567-75. [PMID: 17259170 DOI: 10.1074/jbc.m611153200] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Deubiquitinating enzymes (DUBs) are negative regulators of protein ubiquitination and play an important role in ubiquitin-dependent processes. Recent studies have found that diverse cellular mechanisms are employed to control the activity of DUBs. Ubiquitin C-terminal hydrolase-L1 (UCH-L1) is a highly expressed neuronal DUB linked to Parkinson disease; however, little is known about its specific functions or modes of regulation. Here, we demonstrate that UCH-L1 is post-translationally modified by monoubiquitin in cells, at lysine residues near the active site. This modification restricts enzyme activity by preventing binding to ubiquitinated targets, and permanent monoubiquitination, as mimicked by a ubiquitin-UCH-L1 fusion, inhibits UCH-L1 in its capacity to increase free ubiquitin levels in cells. Interestingly, UCH-L1 catalyzes its own deubiquitination in an intramolecular manner, thereby regulating the lifetime of this modification. Our results illustrate monoubiquitination as a reversible regulatory mechanism for DUB activity involving auto-deubiquitination.
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Affiliation(s)
- Robin K Meray
- Department of Neurology, Harvard Medical School and Brigham and Women's Hospital, Cambridge, Massachusetts 02139, USA
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Kwon J. The New Function of Two Ubiquitin C-Terminal Hydrolase Isozymes as Reciprocal Modulators of Germ Cell Apoptosis. Exp Anim 2007; 56:71-7. [PMID: 17460351 DOI: 10.1538/expanim.56.71] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Ubiquitination is required throughout all developmental stages of mammalian spermatogenesis. The two ubiquitin C-terminal hydrolase (UCH) enzymes, UCH-L1 and UCH-L3, deubiquitinate ubiquitin-protein conjugates and control the cellular balance of ubiquitin. These two UCH isozymes have 52% amino acid identity and share significant structural similarity. A new function of these two closely related UCH enzymes during spermatogenesis which is associated with germ cell apoptosis has been analyzed. Apoptosis, in general, is thought to be partly regulated by the ubiquitin-proteasome system. During spermatogenesis, apoptosis controls germ cell numbers and eliminates defective germ cells to facilitate testicular homeostasis. In this paper, I review the distinct function of the two UCH isozymes in the testis of gad and Uchl3 knockout mice, which are strongly but reciprocally expressed during spermatogenesis. In addition, the importance of UCHL1-dependent apoptosis for normal spermatogenesis and sperm quality control is discussed.
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Affiliation(s)
- Jungkee Kwon
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Chonbuk National University, Duckjin-Gu, Jeonju, Jeonbuk, Korea
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Sekiguchi S, Kwon J, Yoshida E, Hamasaki H, Ichinose S, Hideshima M, Kuraoka M, Takahashi A, Ishii Y, Kyuwa S, Wada K, Yoshikawa Y. Localization of ubiquitin C-terminal hydrolase L1 in mouse ova and its function in the plasma membrane to block polyspermy. THE AMERICAN JOURNAL OF PATHOLOGY 2006; 169:1722-9. [PMID: 17071595 PMCID: PMC1780224 DOI: 10.2353/ajpath.2006.060301] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Protein degradation is essential for oogenesis and embryogenesis. The ubiquitin-proteasome system regulates many cellular processes via the rapid degradation of specific proteins. Ubiquitin carboxyl-terminal hydrolase L1 (UCH-L1) is exclusively expressed in neurons, testis, ovary, and placenta, each of which has unique biological activities. However, the functional role of UCH-L1 in mouse oocytes remains unknown. Here, we report the expression pattern of UCH-L1 and its isozyme UCH-L3 in mouse ovaries and embryos. Using immunocytochemistry, UCH-L1 was selectively detected on the plasma membrane, whereas UCH-L3 was mainly detected in the cytoplasm, suggesting that these isozymes have distinct functions in mouse eggs. To further investigate the functional role of UCH-L1 in mouse eggs, we analyzed the fertilization rate of UCH-L1-deficient ova of gad female mice. Female gad mice had a significantly increased rate of polyspermy in in vitro fertilization assays, although the rate of fertilization did not differ significantly from wild-type mice. In addition, the litter size of gad female mice was significantly reduced compared with wild-type mice. These results may identify UCH-L1 as a candidate for a sperm-oocyte interactive binding or fusion protein on the plasma membrane that functions during the block to polyspermy in mouse oocytes.
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Affiliation(s)
- Satoshi Sekiguchi
- Department of Biomedical Science, Graduate School of Agricultural and Life Sciences, University of Tokyo, 1-1-1 Yayoi, Tokyo 113-8657, Japan
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Carolan BJ, Heguy A, Harvey BG, Leopold PL, Ferris B, Crystal RG. Up-regulation of expression of the ubiquitin carboxyl-terminal hydrolase L1 gene in human airway epithelium of cigarette smokers. Cancer Res 2006; 66:10729-40. [PMID: 17108109 DOI: 10.1158/0008-5472.can-06-2224] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Neuroendocrine differentiation is a common feature of lung cancer and increased numbers of neuroendocrine cells and their peptides have been described in chronic smokers. To understand the effects of cigarette smoking on the gene expression profile of neuroendocrine cells, microarray analysis with TaqMan confirmation was used to assess airway epithelial samples obtained by fiberoptic bronchoscopy from 81 individuals [normal nonsmokers, normal smokers, smokers with early chronic obstructive lung disease (COPD), and smokers with established COPD]. Of 11 genes considered to be neuroendocrine cell specific, only ubiquitin carboxyl-terminal hydrolase L1 (UCHL1), a member of the ubiquitin proteasome pathway, was consistently up-regulated in smokers compared with nonsmokers. Up-regulation of UCHL1 at the protein level was observed with immunohistochemical analysis of bronchial biopsies of smokers compared with nonsmokers. UCHL1 expression was evident only in neuroendocrine cells of the airway epithelium in nonsmokers; however, UCHL1 was also expressed in ciliated epithelial cells in smokers. This observation may add further weight to recent observations that ciliated cells are capable of transdifferentiating to other airway epithelial cells. In the context that UCHL1 is involved in the degradation of unwanted, misfolded, or damaged proteins within the cell and is overexpressed in >50% of lung cancers, its overexpression in chronic smokers may represent an early event in the complex transformation from normal epithelium to overt malignancy.
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Affiliation(s)
- Brendan J Carolan
- Department of Genetic Medicine and Division of Pulmonary and Critical Care Medicine, Weill Medical College of Cornell University, New York, New York, USA
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Okochi-Takada E, Nakazawa K, Wakabayashi M, Mori A, Ichimura S, Yasugi T, Ushijima T. Silencing of the UCHL1 gene in human colorectal and ovarian cancers. Int J Cancer 2006; 119:1338-44. [PMID: 16642472 DOI: 10.1002/ijc.22025] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Aberrant DNA methylation is associated with many types of human cancers. To identify genes silenced in human colorectal cancers, we performed a microarray analysis for genes whose expression was induced by treatment of HCT116 human colon cancer cells with a demethylating agent, 5-aza-2'-deoxycitidine (5-aza-dC). Seven known genes were identified as being upregulated (> or =8-fold) and expressed at more than twice as high as the average level. Among these was the UCHL1 gene (also known as PGP9.5), which is involved in regulation of cellular ubiquitin levels. A dense CpG island in its promoter region was completely methylated in HCT116 cells, and no mRNA was detected. 5-Aza-dC treatment of HCT116 cells induced dose-dependent demethylation of the CpG island, and restored UCHL1 mRNA and protein expression. UCHL1 silencing was observed in 11 of 12 human colorectal cancer cell lines, and its methylation was detected in 8 of 17 primary colorectal cancers. Further, UCHL1 silencing was observed in 6 of 13 ovarian cancer cell lines, and its methylation was detected in 1 of 17 primary ovarian cancers. These results showed that UCHL1 is inactivated in human colorectal and ovarian cancers by its promoter methylation, and suggest that disturbance of cellular ubiquitin levels is present.
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Affiliation(s)
- Eriko Okochi-Takada
- Carcinogenesis Division, National Cancer Center Research Institute, Tokyo, Japan
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Sano Y, Furuta A, Setsuie R, Kikuchi H, Wang YL, Sakurai M, Kwon J, Noda M, Wada K. Photoreceptor cell apoptosis in the retinal degeneration of Uchl3-deficient mice. THE AMERICAN JOURNAL OF PATHOLOGY 2006; 169:132-41. [PMID: 16816367 PMCID: PMC1698765 DOI: 10.2353/ajpath.2006.060085] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
UCH-L3 belongs to the ubiquitin C-terminal hydrolase family that deubiquitinates ubiquitin-protein conjugates in the ubiquitin-proteasome system. A murine Uchl3 deletion mutant displays retinal degeneration, muscular degeneration, and mild growth retardation. To elucidate the function of UCH-L3, we investigated histopathological changes and expression of apoptosis- and oxidative stress-related proteins during retinal degeneration. In the normal retina, UCH-L3 was enriched in the photoreceptor inner segment that contains abundant mitochondria. Although the retina of Uchl3-deficient mice showed no significant morphological abnormalities during retinal development, prominent retinal degeneration became manifested after 3 weeks of age associated with photoreceptor cell apoptosis. Ultrastructurally, a decreased area of mitochondrial cristae and vacuolar changes were observed in the degenerated inner segment. Increased immunoreactivities for manganese superoxide dismutase, cytochrome c oxidase I, and apoptosis-inducing factor in the inner segment indicated mitochondrial oxidative stress. Expression of cytochrome c, caspase-1, and cleaved caspase-3 did not differ between wild-type and mutant mice; however, immunoreactivity for endonuclease G was found in the photoreceptor nuclei in the mutant retina. Hence, loss of UCH-L3 leads to mitochondrial oxidative stress-related photoreceptor cell apoptosis in a caspase-independent manner. Thus, Uchl3-deficient mice represent a model for adult-onset retinal degeneration associated with mitochondrial impairment.
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Affiliation(s)
- Yae Sano
- Department of Degenerative Neurological Diseases, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1, Ogawahigashi, Kodaira, Tokyo 187-8502, Japan
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Bifsha P, Landry K, Ashmarina L, Durand S, Seyrantepe V, Trudel S, Quiniou C, Chemtob S, Xu Y, Gravel RA, Sladek R, Pshezhetsky AV. Altered gene expression in cells from patients with lysosomal storage disorders suggests impairment of the ubiquitin pathway. Cell Death Differ 2006; 14:511-23. [PMID: 16888648 DOI: 10.1038/sj.cdd.4402013] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
By comparing mRNA profiles in cultured fibroblasts from patients affected with lysosomal storage diseases, we identified differentially expressed genes common to these conditions. These studies, confirmed by biochemical experiments, demonstrated that lysosomal storage is associated with downregulation of ubiquitin C-terminal hydrolase, UCH-L1 in the cells of eight different lysosomal disorders, as well as in the brain of a mouse model of Sandhoff disease. Induction of lysosomal storage by the cysteine protease inhibitor E-64 also reduced UCH-L1 mRNA, protein level and activity. All cells exhibiting lysosomal storage contained ubiquitinated protein aggregates and showed reduced levels of free ubiquitin and decreased proteasome activity. The caspase-mediated apoptosis in E-64-treated fibroblasts was reversed by transfection with a UCH-L1 plasmid, and increased after downregulation of UCH-L1 by siRNA, suggesting that UCH-L1 deficiency and impairment of the ubiquitin-dependent protein degradation pathway can contribute to the increased cell death observed in many lysosomal storage disorders.
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Affiliation(s)
- P Bifsha
- Sainte-Justine Hospital, Department of Pediatrics and Biochemistry, University of Montreal, Montreal, Canada
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