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Guo J, Zhang X, Xu Y, Li B, Min M. BPOZ-2-deficient mice exhibit aggravated inflammation-associated tissue damage after acute dextran sodium sulfate or diethylnitrosamine exposure. Toxicol Lett 2024; 398:49-54. [PMID: 38866194 DOI: 10.1016/j.toxlet.2024.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 06/05/2024] [Accepted: 06/07/2024] [Indexed: 06/14/2024]
Abstract
An excessive inflammatory response plays an important role in pathological tissue damage associated with pathogen infection and tumorigenesis. Blood POZ-containing gene type 2 (BPOZ-2), an adaptor protein for the E3 ubiquitin ligase scaffold protein CUL3, is a negative regulator of the inflammatory response. In this study, we investigated the pathophysiological functions of BPOZ-2 in dextran sodium sulfate (DSS)-induced colon injury and diethylnitrosamine (DEN)-induced liver damage. Our results indicated that BPOZ-2 deficiency increased IL-1β induction after DSS and DEN treatment. In addition, BPOZ-2-deficient mice were more susceptible to DSS-induced colitis. Notably, BPOZ-2 deficiency aggravated DEN-induced acute liver injury. These results revealed that BPOZ-2 protected against pathological tissue damage with a dysregulated inflammatory response.
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Affiliation(s)
- Jiayi Guo
- Department of Basic Medical Sciences, Capital Medical University, Beijing 100069, PR China
| | - Xueting Zhang
- Department of Gastroenterology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, PR China
| | - Yang Xu
- Department of Gastroenterology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, PR China
| | - Bo Li
- Department of Clinical Laboratory, The Fifth Medical Centre of Chinese PLA General Hospital, Beijing 100071, PR China
| | - Min Min
- Department of Gastroenterology, The Fifth Medical Center of Chinese PLA General Hospital, Beijing 100071, PR China.
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2
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Chen J, Ning D, Du P, Liu Q, Mo J, Liang H, Zhang W, Zhang M, Jiang L, Zhang B, Chen X. USP11 potentiates HGF/AKT signaling and drives metastasis in hepatocellular carcinoma. Oncogene 2024; 43:123-135. [PMID: 37973952 DOI: 10.1038/s41388-023-02847-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 09/06/2023] [Accepted: 09/18/2023] [Indexed: 11/19/2023]
Abstract
USP11 is a member of the ubiquitin-specific protease family and plays a crucial role in tumor progression in various cancers. However, the precise mechanism by which USP11 promotes EMT and metastasis in hepatocellular carcinoma (HCC) is not fully understood. In this study, we demonstrated that the USP11 expression was dramatically upregulated in HCC tissues and cell lines. Increased USP11 expression was closely associated with tumor number, vascular invasion, and poor prognosis. Functional experiments demonstrated that USP11 markedly promoted metastasis and EMT in HCC via induction of the transcription factor Snail. Mechanistically, USP11 interacted with and deubiquitinated eEF1A1 on Lys439, thereby inhibiting its ubiquitin-mediated degradation. Subsequently, the elevated expression of eEF1A1 resulted in its binding to SP1, which in turn drove the binding of SP1 to its target HGF gene promoter to increase its transcription. This led to an enhanced expression of HGF and the activation of the downstream PI3K/AKT signaling pathway. We demonstrated that USP11 promotes EMT and metastasis in HCC via eEF1A1/SP1/HGF dependent-EMT. Our findings suggest that the USP11/ eEF1A1/SP1/HGF axis contributes to metastasis in HCC, and therefore, could be considered as a potential therapeutic target for the treatment of HCC.
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Affiliation(s)
- Jin Chen
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China
| | - Deng Ning
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China
- Department of Hepatobiliary Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, 430030, China
| | - Pengcheng Du
- Department of Biliary and Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China
| | - Qiumeng Liu
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China
| | - Jie Mo
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China
| | - Huifang Liang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China
| | - Wanguang Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China
| | - Mingzhi Zhang
- Department of Cancer Biology, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Li Jiang
- Department of Biliary and Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, PR China.
| | - Bixiang Zhang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China.
| | - Xiaoping Chen
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Clinical Medicine Research Center for Hepatic Surgery of Hubei Province; Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, 430030, PR China.
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3
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Shi W, Shan Z, Jiang L, Wang G, Wang X, Chang Y, Hu Y, Wang B, Li Q, Wang Y, Deng G, Shi J, Jiang Y, Zeng X, Tian G, Chen H, Li C. ABTB1 facilitates the replication of influenza A virus by counteracting TRIM4-mediated degradation of viral NP protein. Emerg Microbes Infect 2023; 12:2270073. [PMID: 37823597 PMCID: PMC10623896 DOI: 10.1080/22221751.2023.2270073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 10/06/2023] [Indexed: 10/13/2023]
Abstract
Influenza A viruses (IAVs) continue to cause tremendous economic losses to the global animal industry and respiratory diseases and deaths among humans. The nuclear import of the vRNP complex, composed of polymerase basic protein 1 (PB1), polymerase basic protein 2 (PB2), polymerase acidic protein (PA), nucleoprotein (NP), and viral RNA, is essential for the efficient replication of IAV. Host factors involved in this process can be targeted for the development of countermeasures against IAV infection. Here, we found that Ankyrin Repeat and BTB Domain Containing 1 (ABTB1) promotes the replication of IAV, and positively regulates the nuclear import of the vRNP complex. ABTB1 did not interact directly with NP, indicating that ABTB1 plays an indirect role in facilitating the nuclear import of the vRNP complex. Immunoprecipitation and mass spectrometry revealed that Tripartite Motif Containing 4 (TRIM4) interacts with ABTB1. We found that TRIM4 relies on its E3 ubiquitin ligase activity to inhibit the replication of IAV by targeting and degrading NP within the incoming vRNP complex as well as the newly synthesized NP. ABTB1 interacted with TRIM4, leading to TRIM4 degradation through the proteasome system. Notably, ABTB1-mediated degradation of TRIM4 blocked the effect of TRIM4 on NP stability, and largely counteracted the inhibitory effect of TRIM4 on IAV replication. Our findings define a novel role for ABTB1 in aiding the nuclear import of the vRNP complex of IAV by counteracting the destabilizing effect of TRIM4 on the viral NP protein.
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Affiliation(s)
- Wenjun Shi
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Zhibo Shan
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Li Jiang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Guangwen Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Xuyuan Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Yu Chang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Yuzhen Hu
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Bo Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Qibing Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Yihan Wang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Guohua Deng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Jianzhong Shi
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Yongping Jiang
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Xianying Zeng
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Guobin Tian
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Hualan Chen
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
| | - Chengjun Li
- State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, People's Republic of China
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CRL3s: The BTB-CUL3-RING E3 Ubiquitin Ligases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1217:211-223. [PMID: 31898230 DOI: 10.1007/978-981-15-1025-0_13] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The ubiquitin proteasome pathway is one of the major regulatory tools used by eukaryotic cells. The evolutionarily conserved cullin family proteins can assemble as many as >600 distinct E3 ubiquitin ligase complexes that regulate diverse cellular pathways. In most of Cullin-RING ubiquitin ligase (CRL) complexes, separate linker and adaptor proteins build the substrate recognition module. Differently, a single BTB-containing adaptor molecule utilizing two protein interaction sites can link the CUL3 scaffold to the substrate, forming as many as 188 CUL3-BTB E3 ligase complexes in mammals. Here, we review the most recent studies on CRL3 complexes, with a focus on the model for CUL3 assembly with its BTB-containing substrate receptors. Also, we summarize the current knowledge of CRL3 substrates and their relevant biological functions. Next, we discuss the mutual exclusivity of somatic mutations in KEAP1, NRF2, and CUL3 in human lung cancer. Finally, we highlight new strategies to expand CUL3 substrates and discuss outstanding questions remaining in the field.
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5
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Koizumi Y, Fukushima J, Kobayashi Y, Kadowaki A, Natsui M, Yamaguchi T, Imai Y, Sugiyama T, Kuba K. Genome-Scale CRISPR/Cas9 Screening Reveals Squalene Epoxidase as a Susceptibility Factor for Cytotoxicity of Malformin A1. Chembiochem 2019; 20:1563-1568. [PMID: 30734978 PMCID: PMC6618319 DOI: 10.1002/cbic.201800769] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/21/2019] [Indexed: 01/23/2023]
Abstract
Malformin A1 (MA1) is a fungus-produced cyclic pentapeptide. MA1 exhibits teratogenicity to plants, fibrinolysis-enhancing activity, and cytotoxicity to mammalian cells. To clarify the cytotoxic mechanism of MA1, we screened for the genes involved in the cytotoxicity of MA1 in monocytoid U937 cells by using a CRISPR/Cas9-based genome-wide knockout library. Screening was performed by positive selection for cells that were resistant to MA1 treatment, and single guide RNAs (sgRNAs) integrated into MA1-resistant cells were analyzed by high-throughput sequencing. As a result of the evaluation of sgRNAs that were enriched in MA1-resistant cells, SQLE, which encodes squalene epoxidase, was identified as a candidate gene. SQLE-depleted U937 cells were viable in the presence of MA1, and squalene epoxidase inhibitor conferred MA1 resistance to wild-type cells. These results indicate that squalene epoxidase is implicated in the cytotoxicity of MA1. This finding represents a new insight into applications of MA1 for treating ischemic diseases.
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Affiliation(s)
- Yukio Koizumi
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Jun Fukushima
- Department of BiotechnologyFaculty of Bioresource SciencesAkita Prefectural University241–438 Kaidobata-Nishi, Shimoshinjo-NakanoAkita010–0195Japan
| | - Yayoi Kobayashi
- Department of BiotechnologyFaculty of Bioresource SciencesAkita Prefectural University241–438 Kaidobata-Nishi, Shimoshinjo-NakanoAkita010–0195Japan
| | - Ayumi Kadowaki
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Miyuki Natsui
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Tomokazu Yamaguchi
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Yumiko Imai
- Laboratory of Regulation of Intractable Infectious DiseasesNational Institutes of Biomedical Innovation, Health and Nutrition7-6-8 Saito-AsagiIbaraki, Osaka567-0085Japan
| | - Toshihiro Sugiyama
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
| | - Keiji Kuba
- Department of Biochemistry and Metabolic ScienceAkita University Graduate School of Medicine1-1-1 HondoAkita 010-8543Japan
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6
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Zhang W, Xiang M, Zheng C, Chen L, Ge J, Yan C, Liu X. [Eukaryotic translation elongation factor 1A1 positively regulates NOB1 expression to promote invasion and metastasis of hepatocellular carcinoma cells in vitro]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:1195-1202. [PMID: 30377124 DOI: 10.3969/j.issn.1673-4254.2018.10.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To explore the role of eukaryotic translation elongation factor 1A1 (eEF1A1) in regulating the invasion and metastasis of hepatocellular carcinoma (HCC) cells and the possible mechanism. METHODS qRT-PCR and Western blotting were used to detect the mRNA and protein expression of eEF1A1 and NOB1 in different HCC cell lines and normal liver cells. The invasion and migration abilities of HCC cells with eEF1A1 knockdown or overexpression were examined using Transwell chamber assay and RTCA assay, and the changes in NOB1 mRNA and protein expressions in the cells were detected. The effects of increasing NOB1 expression in HCCLM3-sheEF1A1 cells and decreasing NOB1 expression in eEF1A1-overexpressing MHCC97h cells on eEF1A1 expression and cell invasion and migration abilities were analyzed using Western blotting, Transwell chamber assay and RTCA assay. RESULTS The expressions of eEF1A1 and NOB1 were significantly increased in positive correlation in HCC cells as compared with normal hepatocytes. Knockdown of eEF1A1 significantly decreased the invasion and migration of HCC cells and reduced the mRNA and protein expression of NOB1 (P < 0.01). Overexpression of eEF1A1 significantly enhanced invasion and migration of HCC cells and increased NOB1 mRNA and protein expressions (P < 0.01). Increasing NOB1 expression in HCCLM3-sheEF1A1 cells led to the restoration of NOB1 expression and cell invasion and migration abilities (P < 0.01), whereas decreasing NOB1 in MHCC97h-eEF1A1 cells resulted in inhibition of NOB1 expression and cell invasion and migration (P < 0.01). CONCLUSIONS eEF1A1 positively regulates the expression of NOB1 to promote the invasion and migration of HCC cells in vitro.
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Affiliation(s)
- Wenming Zhang
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China.,Jiangxi Key Laboratory of Molecular Medicine, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Mingfeng Xiang
- Department of Urology, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Chuqian Zheng
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China.,Jiangxi Key Laboratory of Molecular Medicine, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Leifeng Chen
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China.,Jiangxi Key Laboratory of Molecular Medicine, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Jin Ge
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China.,Jiangxi Key Laboratory of Molecular Medicine, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Chen Yan
- Department of Rheumatology, 4Jiangxi Key Laboratory of Molecular Medicine, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
| | - Xiuxia Liu
- Jiangxi Key Laboratory of Molecular Medicine, Second Affiliated Hospital of Nanchang University, Nanchang 330000, China
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Structural rationale for the cross-resistance of tumor cells bearing the A399V variant of elongation factor eEF1A1 to the structurally unrelated didemnin B, ternatin, nannocystin A and ansatrienin B. J Comput Aided Mol Des 2017; 31:915-928. [DOI: 10.1007/s10822-017-0066-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 09/08/2017] [Indexed: 01/24/2023]
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González-López L, Carballar-Lejarazú R, Arrevillaga Boni G, Cortés-Martínez L, Cázares-Raga FE, Trujillo-Ocampo A, Rodríguez MH, James AA, Hernández-Hernández FDLC. Lys48 ubiquitination during the intraerythrocytic cycle of the rodent malaria parasite, Plasmodium chabaudi. PLoS One 2017; 12:e0176533. [PMID: 28604779 PMCID: PMC5467854 DOI: 10.1371/journal.pone.0176533] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 04/12/2017] [Indexed: 12/26/2022] Open
Abstract
Ubiquitination tags proteins for different functions within the cell. One of the most abundant and studied ubiquitin modification is the Lys48 polyubiquitin chain that modifies proteins for their destruction by proteasome. In Plasmodium is proposed that post-translational regulation is fundamental for parasite development during its complex life-cycle; thus, the objective of this work was to analyze the ubiquitination during Plasmodium chabaudi intraerythrocytic stages. Ubiquitinated proteins were detected during intraerythrocytic stages of Plasmodium chabaudi by immunofluorescent microscopy, bidimensional electrophoresis (2-DE) combined with immunoblotting and mass spectrometry. All the studied stages presented protein ubiquitination and Lys48 polyubiquitination with more abundance during the schizont stage. Three ubiquitinated proteins were identified for rings, five for trophozoites and twenty for schizonts. Only proteins detected with a specific anti- Lys48 polyubiquitin antibody were selected for Mass Spectrometry analysis and two of these identified proteins were selected in order to detect the specific amino acid residues where ubiquitin is placed. Ubiquitinated proteins during the ring and trophozoite stages were related with the invasion process and in schizont proteins were related with nucleic acid metabolism, glycolysis and protein biosynthesis. Most of the ubiquitin detection was during the schizont stage and the Lys48 polyubiquitination during this stage was related to proteins that are expected to be abundant during the trophozoite stage. The evidence that these Lys48 polyubiquitinated proteins are tagged for destruction by the proteasome complex suggests that this type of post-translational modification is important in the regulation of protein abundance during the life-cycle and may also contribute to the parasite cell-cycle progression.
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Affiliation(s)
- Lorena González-López
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
| | - Rebeca Carballar-Lejarazú
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
- Departments of Molecular Biology & Biochemistry and Microbiology & Molecular Genetics, University of California, Irvine, California, United States of America
| | - Gerardo Arrevillaga Boni
- Departamento de Biomedicina Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
| | - Leticia Cortés-Martínez
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
| | - Febe Elena Cázares-Raga
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
| | - Abel Trujillo-Ocampo
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
| | - Mario H. Rodríguez
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, México
| | - Anthony A. James
- Departments of Molecular Biology & Biochemistry and Microbiology & Molecular Genetics, University of California, Irvine, California, United States of America
| | - Fidel de la Cruz Hernández-Hernández
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), México, D.F., México
- * E-mail:
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Liu X, Chen L, Ge J, Yan C, Huang Z, Hu J, Wen C, Li M, Huang D, Qiu Y, Hao H, Yuan R, Lei J, Yu X, Shao J. The Ubiquitin-like Protein FAT10 Stabilizes eEF1A1 Expression to Promote Tumor Proliferation in a Complex Manner. Cancer Res 2016; 76:4897-907. [PMID: 27312528 DOI: 10.1158/0008-5472.can-15-3118] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 06/04/2016] [Indexed: 11/16/2022]
Abstract
Human HLA-F adjacent transcript 10 (FAT10) is the only ubiquitin-like protein that can directly target substrates for degradation by proteasomes, but it can also stabilize the expression of certain substrates by antagonizing ubiquitination, through mechanisms as yet uncharacterized. In this study, we show how FAT10 stabilizes the translation elongation factor eEF1A1, which contributes to cancer cell proliferation. FAT10 overexpression increased expression of eEF1A1, which was sufficient to promote proliferation of cancer cells. Mechanistic investigations revealed that FAT10 competed with ubiquitin (Ub) for binding to the same lysines on eEF1A1 to form either FAT10-eEF1A1 or Ub-eEF1A1 complexes, respectively, such that FAT10 overexpression decreased Ub-eEF1A1 levels and increased FAT10-eEF1A1 levels. Overall, our work establishes a novel mechanism through which FAT10 stabilizes its substrates, advancing understanding of the biological function of FAT10 and its role in cancer. Cancer Res; 76(16); 4897-907. ©2016 AACR.
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Affiliation(s)
- Xiuxia Liu
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China
| | - Leifeng Chen
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Jin Ge
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Chen Yan
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Zixi Huang
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China
| | - Junwen Hu
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chongyu Wen
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Ming Li
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Da Huang
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Yumin Qiu
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Haibin Hao
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Rongfa Yuan
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Jun Lei
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Xin Yu
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China
| | - Jianghua Shao
- Department of General Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, China. Jiangxi Province Key Laboratory of Molecular Medicine, Nanchang, China. Jiangxi Province Engineering Research Center of Hepatobiliary Disease, Nanchang, China.
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Roy A, Rangasamy SB, Kundu M, Pahan K. BPOZ-2 Gene Delivery Ameliorates Alpha-Synucleinopathy in A53T Transgenic Mouse Model of Parkinson's Disease. Sci Rep 2016; 6:22067. [PMID: 26916519 PMCID: PMC4768134 DOI: 10.1038/srep22067] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 02/05/2016] [Indexed: 12/04/2022] Open
Abstract
Ankyrin-rich BTB/POZ domain containing protein-2 or BPOZ-2, a scaffold protein, has been recently shown to control the degradation of many biological proteins ranging from embryonic development to tumor progression. However, its role in the process of neuronal diseases has not been properly explored. Since, abnormal clearance of metabolic proteins contributes to the development of alpha-synuclein (α-syn) pathologies in Parkinson’s disease (PD), we are interested to explore if BPOZ-2 participates in the amelioration of α-syn in vivo in basal ganglia. Here we report that lentiviral administration of bpoz-2 gene indeed lowers the burden of α-syn in DA neurons in the nigra of A53T transgenic (A53T-Tg) mouse. Our detailed immunological analyses have shown that the overexpression of bpoz-2 dramatically improves both somatic and neuritic α-syn pathologies in the nigral DA neurons. Similarly, the specific ablation of bpoz-2 by lentiviral-shRNA stimulates the load of monomeric and polymeric forms of α-syn in the nigral DA neurons of A53T-Tg. While investigating the mechanism, we observed that BPOZ-2 was involved in a protein-protein association with PINK1 and therefore could stimulate PINK1-dependent autophagic clearance of α-syn. Our results have demonstrated that bpoz-2 gene delivery could have prospect in the amelioration of alpha-synucleinopathy in PD and other Lewy body diseases.
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Affiliation(s)
- Avik Roy
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA
| | - Suresh Babu Rangasamy
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA
| | - Madhuchhanda Kundu
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA
| | - Kalipada Pahan
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA.,Division of Research and Development, Jesse Brown Veterans Affairs Medical Center, 820 South Darnen Avenue, Chicago, IL, USA
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Proteasome modulates positive and negative translational regulators in long-term synaptic plasticity. J Neurosci 2014; 34:3171-82. [PMID: 24573276 DOI: 10.1523/jneurosci.3291-13.2014] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Proteolysis by the ubiquitin-proteasome pathway appears to have a complex role in synaptic plasticity, but its various functions remain to be elucidated. Using late phase long-term potentiation (L-LTP) in the hippocampus of the mouse as a model for long-term synaptic plasticity, we previously showed that inhibition of the proteasome enhances induction but blocks maintenance of L-LTP. In this study, we investigated the possible mechanisms by which proteasome inhibition has opposite effects on L-LTP induction and maintenance. Our results show that inhibiting phosphatidyl inositol-3 kinase or blocking the interaction between eukaryotic initiation factors 4E (eIF4E) and 4G (eIF4G) reduces the enhancement of L-LTP induction brought about by proteasome inhibition suggesting interplay between proteolysis and the signaling pathway mediated by mammalian target of rapamycin (mTOR). Also, proteasome inhibition leads to accumulation of translational activators in the mTOR pathway such as eIF4E and eukaryotic elongation factor 1A (eEF1A) early during L-LTP causing increased induction. Furthermore, inhibition of the proteasome causes a buildup of translational repressors, such as polyadenylate-binding protein interacting protein 2 (Paip2) and eukaryotic initiation factor 4E-binding protein 2 (4E-BP2), during late stages of L-LTP contributing to the blockade of L-LTP maintenance. Thus, the proteasome plays a critical role in regulating protein synthesis during L-LTP by tightly controlling translation. Our results provide novel mechanistic insights into the interplay between protein degradation and protein synthesis in long-term synaptic plasticity.
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12
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Roy A, Pahan K. Ankyrin repeat and BTB/POZ domain containing protein-2 inhibits the aggregation of alpha-synuclein: implications for Parkinson's disease. FEBS Lett 2013; 587:3567-74. [PMID: 24076025 DOI: 10.1016/j.febslet.2013.09.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/12/2013] [Accepted: 09/13/2013] [Indexed: 01/17/2023]
Abstract
Aggregation of α-synuclein is a pathological hallmark of sporadic or familial PD. However, the detailed molecular mechanism responsible for the aggregation of α-synuclein has not been properly explored. In the present study, we have identified a novel role of an anti-tumorigenic BTB/POZ domain containing protein-2 (BPOZ-2) in the regulation of α-synuclein accumulation in dopaminergic (DA) neurons. MPP(+), an etiological factor for PD, significantly downregulated the expression of BPOZ-2 ahead of α-synuclein upregulation. Moreover, siRNA knockdown of BPOZ-2 alone stimulated the aggregation of α-synuclein protein; the effect was further induced in presence of MPP(+) in mouse primary DA neurons. Finally, the absence of BPOZ-2 in α-synuclein expressing neuronal populations of MPTP-intoxicated mouse and primate nigra indicates that the suppression of BPOZ-2 could be involved in the accumulation of α-synuclein protein.
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Affiliation(s)
- Avik Roy
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL 60612, USA.
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13
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Niño CA, Chaparro J, Soffientini P, Polo S, Wasserman M. Ubiquitination dynamics in the early-branching eukaryote Giardia intestinalis. Microbiologyopen 2013; 2:525-39. [PMID: 23613346 PMCID: PMC3684764 DOI: 10.1002/mbo3.88] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 03/11/2013] [Accepted: 03/12/2013] [Indexed: 01/06/2023] Open
Abstract
Ubiquitination is a highly dynamic and versatile posttranslational modification that regulates protein function, stability, and interactions. To investigate the roles of ubiquitination in a primitive eukaryotic lineage, we utilized the early-branching eukaryote Giardia intestinalis. Using a combination of biochemical, immunofluorescence-based, and proteomics approaches, we assessed the ubiquitination status during the process of differentiation in Giardia. We observed that different types of ubiquitin modifications present specific cellular and temporal distribution throughout the Giardia life cycle from trophozoites to cyst maturation. Ubiquitin signal was detected in the wall of mature cysts, and enzymes implicated in cyst wall biogenesis were identified as substrates for ubiquitination. Interestingly, inhibition of proteasome activity did not affect trophozoite replication and differentiation, while it caused a decrease in cyst viability, arguing for proteasome involvement in cyst wall maturation. Using a proteomics approach, we identified around 200 high-confidence ubiquitinated candidates that vary their ubiquitination status during differentiation. Our results indicate that ubiquitination is critical for several cellular processes in this primitive eukaryote.
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Affiliation(s)
- Carlos A Niño
- Laboratorio de Investigaciones Básicas en Bioquímica - LIBBIQ, Departamento de Química, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, Colombia
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14
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Kjartansdóttir KR, Gabrielsen A, Reda A, Söder O, Bergström-Tengzelius R, Andersen CY, Hovatta O, Stukenborg JB, Fedder J. Differentiation of stem cells upon deprivation of exogenous FGF2: a general approach to study spontaneous differentiation of hESCs in vitro. Syst Biol Reprod Med 2012; 58:330-8. [PMID: 22708801 PMCID: PMC3507279 DOI: 10.3109/19396368.2012.694009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Establishing a model for in vitro differentiation of human embryonic stem cells (hESCs) towards the germ cell lineage could be used to identify molecular mechanisms behind germ cell differentiation that may help in understanding human infertility. Here, we evaluate whether a lack of exogenous fibroblast growth factor 2 (FGF2) is supporting spontaneous differentiation of hESCs cultured on human foreskin fibroblast (hFF) monolayers towards germ cell lineage. Additionally to depriving the hESCs of exogenous FGF2, cells were stimulated with all-trans retinoic acid (ATRA). To get a more comprehensive impression on effects of removal of FGF2 and stimulation with ATRA, we combined the results of three cell lines for each experimental setting. When combining gene expression profiles of three cell lines for 96 genes, only 6 genes showed a significant up-regulation in all cell lines, when no FGF2 was added to the media for 12 weeks. None of these genes are related to the germ lineage, whereas genes for neuronal cells (PAX6 and NR6A1) and endothelial cells (FLT-1 and PTF1A) were up-regulated. To induce and support the differentiation towards the germ lineage we stimulated hESCs with different concentrations of ATRA for 7 and 14 days. We observed no significant difference in gene expression on RNA level when combining all cell lines. Whereas, the overall outcome was negative, one of these cell lines demonstrated an up-regulation of DDX4 on RNA and protein level after 7 days of ATRA stimulation. In summary, our data showed that the lack of exogenous FGF2 results in up-regulation of genes crucial for neuronal and endothelial cell differentiation of hESCs, but not in the up-regulation of genes related to germ cell differentiation when cultured on hFFs. Additionally, we demonstrated that ATRA supplementation did not result in a general specific direction of hESCs towards the germ lineage.
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15
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Scaggiante B, Dapas B, Bonin S, Grassi M, Zennaro C, Farra R, Cristiano L, Siracusano S, Zanconati F, Giansante C, Grassi G. Dissecting the expression of EEF1A1/2 genes in human prostate cancer cells: the potential of EEF1A2 as a hallmark for prostate transformation and progression. Br J Cancer 2012; 106:166-73. [PMID: 22095224 PMCID: PMC3251850 DOI: 10.1038/bjc.2011.500] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND In prostate adenocarcinoma, the dissection of the expression behaviour of the eukaryotic elongation factors (eEF1A1/2) has not yet fully elucidated. METHODS The EEF1A1/A2 expressions were investigated by real-time PCR, western blotting (cytoplasmic and cytoskeletal/nuclear-enriched fractions) and immunofluorescence in the androgen-responsive LNCaP and the non-responsive DU-145 and PC-3 cells, displaying a low, moderate and high aggressive phenotype, respectively. Targeted experiments were also conducted in the androgen-responsive 22Rv1, a cell line marking the progression towards androgen-refractory tumour. The non-tumourigenic prostate PZHPV-7 cell line was the control. RESULTS Compared with PZHPV-7, cancer cells showed no major variations in EEF1A1 mRNA; eEF1A1 protein increased only in cytoskeletal/nuclear fraction. On the contrary, a significant rise of EEF1A2 mRNA and protein were found, with the highest levels detected in LNCaP. Eukaryotic elongation factor 1A2 immunostaining confirmed the western blotting results. Pilot evaluation in archive prostate tissues showed the presence of EEF1A2 mRNA in near all neoplastic and perineoplastic but not in normal samples or in benign adenoma; in contrast, EEF1A1 mRNA was everywhere detectable. CONCLUSION Eukaryotic elongation factor 1A2 switch-on, observed in cultured tumour prostate cells and in human prostate tumour samples, may represent a feature of prostate cancer; in contrast, a minor involvement is assigned to EEF1A1. These observations suggest to consider EEF1A2 as a marker for prostate cell transformation and/or possibly as a hallmark of cancer progression.
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Affiliation(s)
- B Scaggiante
- Molecular Biology Section, Department of Life Sciences, University of Trieste, Via Giorgieri, 1, Trieste 34127, Italy.
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Hayano T, Koiwai K, Ishii H, Maezawa S, Kouda K, Motoyama T, Kubota T, Koiwai O. TdT interacting factor 1 enhances TdT ubiquitylation through recruitment of BPOZ-2 into nucleus from cytoplasm. Genes Cells 2009; 14:1415-27. [PMID: 19930467 DOI: 10.1111/j.1365-2443.2009.01358.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Takahide Hayano
- Faculty of Science & Technology, Department of Applied Biological Science, Tokyo University of Science, Noda, Chiba 278-8510, Japan
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Zhang F, Shu R, Wu X, Zhao X, Feng D, Wang L, Lu S, Liu Q, Xiang Y, Fei J, Huang L, Wang Z. Delayed liver injury and impaired hepatocyte proliferation after carbon tetrachloride exposure in BPOZ2-deficient mice. Toxicol Lett 2009; 188:201-7. [PMID: 19393728 DOI: 10.1016/j.toxlet.2009.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2008] [Revised: 04/11/2009] [Accepted: 04/14/2009] [Indexed: 12/28/2022]
Abstract
BPOZ2 is a tumor suppressive mediator in PTEN signaling pathway and plays an important role in cell proliferation. In this study, we investigated the physiology functions of BPOZ2 in CCl(4)-induced liver injury and hepatocyte proliferation afterwards. After acute CCl(4) administration, BPOZ2 null mice exhibited delayed liver injury and impaired hepatocyte proliferation, which was accompanied by altered kinetics of CYP2E1 protein expression, compromised cyclin D1 expression and shortened duration of ERK activation. These results for the first time define that BPOZ2 is an important regulator involved in the injury and repair process induced by acute CC1(4) administration in mouse liver.
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Affiliation(s)
- Feng Zhang
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences of Chinese Academy of Sciences and Shanghai Jiao Tong University School of Medicine, Shanghai, China
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