1
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Huang Y, Urban C, Hubel P, Stukalov A, Pichlmair A. Protein turnover regulation is critical for influenza A virus infection. Cell Syst 2024:S2405-4712(24)00268-0. [PMID: 39368468 DOI: 10.1016/j.cels.2024.09.004] [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: 12/19/2023] [Revised: 08/16/2024] [Accepted: 09/13/2024] [Indexed: 10/07/2024]
Abstract
The abundance of a protein is defined by its continuous synthesis and degradation, a process known as protein turnover. Here, we systematically profiled the turnover of proteins in influenza A virus (IAV)-infected cells using a pulse-chase stable isotope labeling by amino acids in cell culture (SILAC)-based approach combined with downstream statistical modeling. We identified 1,798 virus-affected proteins with turnover changes (tVAPs) out of 7,739 detected proteins (data available at pulsechase.innatelab.org). In particular, the affected proteins were involved in RNA transcription, splicing and nuclear transport, protein translation and stability, and energy metabolism. Many tVAPs appeared to be known IAV-interacting proteins that regulate virus propagation, such as KPNA6, PPP6C, and POLR2A. Notably, our analysis identified additional IAV host and restriction factors, such as the splicing factor GPKOW, that exhibit significant turnover rate changes while their total abundance is minimally affected. Overall, we show that protein turnover is a critical factor both for virus replication and antiviral defense.
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Affiliation(s)
- Yiqi Huang
- Institute of Virology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Christian Urban
- Institute of Virology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Philipp Hubel
- Core Facility Hohenheim, Universität Hohenheim, Stuttgart, Germany
| | - Alexey Stukalov
- Institute of Virology, Technical University of Munich, School of Medicine, Munich, Germany
| | - Andreas Pichlmair
- Institute of Virology, Technical University of Munich, School of Medicine, Munich, Germany; Institute of Virology, Helmholtz Munich, Munich, Germany; German Centre for Infection Research (DZIF), Partner Site, Munich, Germany.
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2
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Zhou L, Zhai G, Tian G. CRIF1 attenuates doxorubicin-mediated mitochondrial dysfunction and myocardial senescence via regulating PXDN. Aging (Albany NY) 2024; 16:5567-5580. [PMID: 38517371 PMCID: PMC11006484 DOI: 10.18632/aging.205664] [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: 10/13/2023] [Accepted: 01/03/2024] [Indexed: 03/23/2024]
Abstract
BACKGROUND CR6-interacting factor 1 (CRIF1), a multifunctional protein that affects mitochondrial function and cell senescence, plays a regulatory role in heart-related diseases. However, whether CRIF1 participates in myocardial senescence by regulating mitochondrial function remains unclear. METHODS Doxorubicin (DOX)-induced C57BL/6 mice to construct mouse myocardial senescence model, and the myocardial function indicators including lactate dehydrogenase (LDH) and Creatine kinase isoform MB (CK-MB) were assessed. The expression of CRIF1 was detected by western blot. Myocardial pathological changes were examined by transthoracic echocardiography and haematoxylin and eosin (H&E) staining. Cell senescence was detected by SA-β-gal staining. JC-1 staining was used to detect mitochondrial membrane potential. Biochemical kits were used to examine oxidative stress-related factors. Additionally, AC16 cardiomyocytes were treated with DOX to mimic the cellular senescence model in vitro. Cell activity was detected by cell counting kit-8 (CCK-8) assay. Co-immunoprecipitation (CO-IP) was used to verify the relationship between CRIF1 and peroxidasin (PXDN). RESULTS The CRIF1 expression was significantly decreased in DOX-induced senescent mice and AC16 cells. Overexpression of CRIF1 significantly ameliorated DOX-induced myocardial dysfunction and myocardial senescence. Additionally, CRIF1 overexpression attenuated DOX-induced oxidative stress and myocardial mitochondrial dysfunction. Consistently, CRIF1 overexpression also inhibited DOX-induced oxidative stress and senescence in AC16 cells. Moreover, CRIF1 was verified to bind to PXDN and inhibited PXDN expression. The inhibitory effects of CRIF1 overexpression on DOX-induced oxidative stress and senescence in AC16 cells were partly abolished by PXDN expression. CONCLUSIONS CRIF1 plays a protective role against DOX-caused mitochondrial dysfunction and myocardial senescence partly through downregulating PXDN.
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Affiliation(s)
- Lina Zhou
- Department of Geriatrics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121000, Liaoning, China
| | - Guilan Zhai
- Department of Geriatrics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121000, Liaoning, China
| | - Ge Tian
- Department of Cardiology, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121000, Liaoning, China
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3
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Xie Q, Tong C, Xiong X. An overview of the co-transcription factor NACC1: Beyond its pro-tumor effects. Life Sci 2024; 336:122314. [PMID: 38030057 DOI: 10.1016/j.lfs.2023.122314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/20/2023] [Accepted: 11/26/2023] [Indexed: 12/01/2023]
Abstract
Nucleus accumbens-associated protein 1 (NACC1) is a member of the broad complex, tramtrack, bric-a-brac/poxvirus and zinc finger (BTB/POZ) protein families, mainly exerting its biological functions as a transcription co-regulator. NACC1 forms homo- or hetero-dimers through the BTB/POZ or BANP, E5R, and NACC1 (BEN) domain with other transcriptional regulators to regulate downstream signals. Recently, the overexpression of NACC1 has been observed in various tumors and is positively associated with tumor progression, high recurrence rate, indicating poor prognosis. NACC1 also regulates biological processes such as embryonic development, stem cell pluripotency, innate immunity, and related diseases. Our review combines recent research to summarize advancements in the structure, biological functions, and relative molecular mechanisms of NACC1. The future development of NACC1 clinical appliances is also discussed.
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Affiliation(s)
- Qing Xie
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China; School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China
| | - Chang Tong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China
| | - Xiangyang Xiong
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China; Province Key Laboratory of Tumor Pathogens and Molecular Pathology, Nanchang University, Nanchang 330006, China.
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4
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Xiang L, Li F, Xiang Y, Zhang W, Shi D, Zhang X, Chen L, Ran Q, Li Z. CR6-Interacting Factor-1 Promotes Osteoclastogenesis Through the NF-κB Signaling Pathway after Irradiation. Radiat Res 2023; 200:489-502. [PMID: 37815199 DOI: 10.1667/rade-22-00066.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 09/11/2023] [Indexed: 10/11/2023]
Abstract
Radiation exposure arising from radiotherapy may induce rapid bone loss and an increase in the extent of bone resorption. Reactive oxygen species (ROS) caused by radiation exposure play a crucial role during the process of osteoclastogenesis. However, the pathological mechanisms underlying radiation-induced osteoclastogenesis have yet to be fully elucidated. CR6-interacting factor-1 (Crif1) as a multifunctional protein is involved in regulating multiple biological functions in cells. Here, we investigated the role of Crif1 in radiation-induced osteoclastogenesis and found that radiation exposure induced an increase in the expression level of Crif1 and enhanced osteoclastogenesis in osteoclast progenitors. Crif1 and NF-κB p65 co-localized in the cytoplasm after radiation exposure. Crif1 knockdown did not affect the phosphorylation and total protein levels of extracellular signal-regulated kinases (ERK), c-Jun amino (N)-terminal kinases (JNK), p38, and IκB-α before and after irradiation. However, Crif1 knockdown did lead to the reduced phosphorylation and nuclear translocation of NF-κB p65 after irradiation and resulted in a reduced level of osteoclastogenesis in RAW264.7 cells after irradiation. In vivo studies involving Lyz2Cre;Crif1fl/fl mice possessing the myeloid-specific deletion of Crif1 demonstrated the alleviation of bone loss after irradiation when compared with Crif1fl/fl mice. Our findings demonstrate that Crif1 mediated the phosphorylation and nuclear translocation of NF-κB p65 and promoted osteoclastogenesis via the NF-κB signaling pathway after radiation exposure. Thus, our analysis revealed a specific role for Crif1 in the mediation of radiation-induced bone loss and may provide new insight into potential therapeutic strategies for radiation-induced bone loss.
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Affiliation(s)
- Lixin Xiang
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Fengjie Li
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Yang Xiang
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Weiwei Zhang
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Dongling Shi
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Xiaomei Zhang
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Li Chen
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Qian Ran
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
| | - Zhongjun Li
- Basic Research Innovation Center for Acute Radiation Syndrome, Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Army Military Medical University, Chongqing, 400037, China
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5
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González-Arzola K, Díaz-Quintana A. Mitochondrial Factors in the Cell Nucleus. Int J Mol Sci 2023; 24:13656. [PMID: 37686461 PMCID: PMC10563088 DOI: 10.3390/ijms241713656] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/10/2023] Open
Abstract
The origin of eukaryotic organisms involved the integration of mitochondria into the ancestor cell, with a massive gene transfer from the original proteobacterium to the host nucleus. Thus, mitochondrial performance relies on a mosaic of nuclear gene products from a variety of genomes. The concerted regulation of their synthesis is necessary for metabolic housekeeping and stress response. This governance involves crosstalk between mitochondrial, cytoplasmic, and nuclear factors. While anterograde and retrograde regulation preserve mitochondrial homeostasis, the mitochondria can modulate a wide set of nuclear genes in response to an extensive variety of conditions, whose response mechanisms often merge. In this review, we summarise how mitochondrial metabolites and proteins-encoded either in the nucleus or in the organelle-target the cell nucleus and exert different actions modulating gene expression and the chromatin state, or even causing DNA fragmentation in response to common stress conditions, such as hypoxia, oxidative stress, unfolded protein stress, and DNA damage.
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Affiliation(s)
- Katiuska González-Arzola
- Centro Andaluz de Biología Molecular y Medicina Regenerativa—CABIMER, Consejo Superior de Investigaciones Científicas—Universidad de Sevilla—Universidad Pablo de Olavide, 41092 Seville, Spain
- Departamento de Bioquímica Vegetal y Biología Molecular, Universidad de Sevilla, 41012 Seville, Spain
| | - Antonio Díaz-Quintana
- Departamento de Bioquímica Vegetal y Biología Molecular, Universidad de Sevilla, 41012 Seville, Spain
- Instituto de Investigaciones Químicas—cicCartuja, Universidad de Sevilla—C.S.I.C, 41092 Seville, Spain
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6
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Jiang Y, Xiang Y, Lin C, Zhang W, Yang Z, Xiang L, Xiao Y, Chen L, Ran Q, Li Z. Multifunctions of CRIF1 in cancers and mitochondrial dysfunction. Front Oncol 2022; 12:1009948. [PMID: 36263222 PMCID: PMC9574215 DOI: 10.3389/fonc.2022.1009948] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 09/14/2022] [Indexed: 11/23/2022] Open
Abstract
Sustaining proliferative signaling and enabling replicative immortality are two important hallmarks of cancer. The complex of cyclin-dependent kinase (CDK) and its cyclin plays a decisive role in the transformation of the cell cycle and is also critical in the initiation and progression of cancer. CRIF1, a multifunctional factor, plays a pivotal role in a series of cell biological progresses such as cell cycle, cell proliferation, and energy metabolism. CRIF1 is best known as a negative regulator of the cell cycle, on account of directly binding to Gadd45 family proteins or CDK2. In addition, CRIF1 acts as a regulator of several transcription factors such as Nur77 and STAT3 and partly determines the proliferation of cancer cells. Many studies showed that the expression of CRIF1 is significantly altered in cancers and potentially regarded as a tumor suppressor. This suggests that targeting CRIF1 would enhance the selectivity and sensitivity of cancer treatment. Moreover, CRIF1 might be an indispensable part of mitoribosome and is involved in the regulation of OXPHOS capacity. Further, CRIF1 is thought to be a novel target for the underlying mechanism of diseases with mitochondrial dysfunctions. In summary, this review would conclude the latest aspects of studies about CRIF1 in cancers and mitochondria-related diseases, shed new light on targeted therapy, and provide a more comprehensive holistic view.
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Affiliation(s)
- Yangzhou Jiang
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Yang Xiang
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Chuanchuan Lin
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Weiwei Zhang
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Zhenxing Yang
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Lixin Xiang
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Yanni Xiao
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Li Chen
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Qian Ran
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
| | - Zhongjun Li
- Laboratory of Radiation Biology, Laboratory Medicine Center, Department of Blood Transfusion, The Second Affiliated Hospital, Army Military Medical University, Chongqing, China
- State Key Laboratory of Trauma, Burn and Combined Injuries, The Second Affiliated Hospital, Army Medical University, Chongqing, China
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7
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Wang Q, Xie Z, Li C, Xu C, Ding C, Ju S, Chen J, Cui Z, Chen C, Gu B, Wei T, Zhao J. CRIF1 promotes the progression of non-small-cell lung cancer by SIRT3- mediated deacetylation of PYCR1. J Mol Histol 2022; 53:657-667. [PMID: 35716330 DOI: 10.1007/s10735-022-10075-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Abstract
Lung cancer is the cancer with the highest mortality in the world. So further exploration of the pathogenesis of lung cancer is of great significance. In this study, the specific role and related mechanism of CRIF1 in non-small cell lung cancer (NSCLC) were explored in this research. TheRT-PCR, western blot and IHC assays were used to examine the expression level of CRIF1 in NSCLC tissue, tissue adjacent to carcinoma, NSCLC cell lines and human normal lung epithelial cells. Next, colony formation assay, Alamar blue Kit and EdU assays were employed to examine the proliferation of transfected A549 and NCI-H2009 cells. Measurement of mitochondrial permeability transition pore opening, ATP production and cellular oxygen consumption were used to evaluate the mitochondrial apoptosis of transfected NSCLC cells. Enzymatic activity assays for PYCR1, western blot and flow cytometry assays were used to explore the relationship between PYCR1 and CRIF1. The subcutaneous xenograft tumor mice model was established to explore the role of CRIF1 in vivo. Collectively, results revealed that CRIF1 was upregulated in NSCLC cells and tissues (p < 0.001). CRIF1 promoted proliferation of NSCLC cells (p < 0.001). CRIF1 inhibited mitochondrial apoptosis in NSCLC cells (p < 0.05). Moreover, CRIF1 promoted PYCR1 deacetylation and increased its activity through SIRT3 (p < 0.05). Deacetylation of PYCR1 reversed the antitumor effect of CRIF1 knockdown (p < 0.05). Finally, knockdown of CRIF1 inhibited the tumor growth of NSCLC in vivo (p < 0.05).This research found that CRIF1 promoted the progression of non-small-cell lung cancer by SIRT3- mediated deacetylation of PYCR1.
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Affiliation(s)
- Qi Wang
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
- Department of Thoracic Surgery, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, 223300, Jiangsu, China
| | - Zhuolin Xie
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Chang Li
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Chun Xu
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Cheng Ding
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Sheng Ju
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Jun Chen
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Zihan Cui
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
| | - Chen Chen
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
- Department of Thoracic Surgery, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, 223300, Jiangsu, China
| | - Biao Gu
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
- Department of Thoracic Surgery, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, 223300, Jiangsu, China
| | - Tengteng Wei
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China
- Department of Thoracic Surgery, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, 215000, Jiangsu, China
| | - Jun Zhao
- Department of Thoracic Surgery, The First Affiliated Hospital of Soochow University, No. 899, Ping Hai Road, Suzhou, 215006, Jiangsu, China.
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8
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Desai HS, Yan T, Yu F, Sun AW, Villanueva M, Nesvizhskii AI, Backus KM. SP3-Enabled Rapid and High Coverage Chemoproteomic Identification of Cell-State-Dependent Redox-Sensitive Cysteines. Mol Cell Proteomics 2022; 21:100218. [PMID: 35219905 PMCID: PMC9010637 DOI: 10.1016/j.mcpro.2022.100218] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/17/2022] [Accepted: 02/22/2022] [Indexed: 02/07/2023] Open
Abstract
Proteinaceous cysteine residues act as privileged sensors of oxidative stress. As reactive oxygen and nitrogen species have been implicated in numerous pathophysiological processes, deciphering which cysteines are sensitive to oxidative modification and the specific nature of these modifications is essential to understanding protein and cellular function in health and disease. While established mass spectrometry-based proteomic platforms have improved our understanding of the redox proteome, the widespread adoption of these methods is often hindered by complex sample preparation workflows, prohibitive cost of isotopic labeling reagents, and requirements for custom data analysis workflows. Here, we present the SP3-Rox redox proteomics method that combines tailored low cost isotopically labeled capture reagents with SP3 sample cleanup to achieve high throughput and high coverage proteome-wide identification of redox-sensitive cysteines. By implementing a customized workflow in the free FragPipe computational pipeline, we achieve accurate MS1-based quantitation, including for peptides containing multiple cysteine residues. Application of the SP3-Rox method to cellular proteomes identified cysteines sensitive to the oxidative stressor GSNO and cysteine oxidation state changes that occur during T cell activation. High-coverage Cys oxidation state quantification using custom isotopic probes. FragPipe-IonQuant accurately quantifies Cys labeling comparably to Skyline. PTMProphet enables site-of-labeling localization for multi-Cys–containing peptides. SP3-Rox identifies changes in Cys oxidation during T cell activation.
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Affiliation(s)
- Heta S Desai
- Biological Chemistry Department, David Geffen School of Medicine, UCLA, Los Angeles, California, USA; Molecular Biology Institute, UCLA, Los Angeles, California, USA
| | - Tianyang Yan
- Biological Chemistry Department, David Geffen School of Medicine, UCLA, Los Angeles, California, USA; Department of Chemistry and Biochemistry, UCLA, Los Angeles, California, USA
| | - Fengchao Yu
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Alexander W Sun
- Biological Chemistry Department, David Geffen School of Medicine, UCLA, Los Angeles, California, USA
| | - Miranda Villanueva
- Biological Chemistry Department, David Geffen School of Medicine, UCLA, Los Angeles, California, USA; Molecular Biology Institute, UCLA, Los Angeles, California, USA
| | - Alexey I Nesvizhskii
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, Michigan, USA; Department of Pathology, University of Michigan, Ann Arbor, Michigan, USA
| | - Keriann M Backus
- Biological Chemistry Department, David Geffen School of Medicine, UCLA, Los Angeles, California, USA; Department of Chemistry and Biochemistry, UCLA, Los Angeles, California, USA; Molecular Biology Institute, UCLA, Los Angeles, California, USA; DOE Institute for Genomics and Proteomics, UCLA, Los Angeles, California, USA; Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California, USA; Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California, USA.
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9
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Jeong JY, Na KR, Shin JA, Suh KS, Kim JJ, Lee KW, Choi DE. Collecting Duct-Specific CR6-Interacting Factor-1-Deletion Aggravates Renal Inflammation and Fibrosis Induced by Unilateral Ureteral Obstruction. Int J Mol Sci 2021; 22:11699. [PMID: 34769136 PMCID: PMC8584192 DOI: 10.3390/ijms222111699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 01/17/2023] Open
Abstract
Although inflammation and fibrosis, which are key mechanisms of chronic kidney disease, are associated with mitochondrial damage, little is known about the effects of mitochondrial damage on the collecting duct in renal inflammation and fibrosis. To generate collecting duct-specific mitochondrial injury mouse models, CR6-interacting factor-1 (CRIF1) flox/flox mice were bred with Hoxb7-Cre mice. We evaluated the phenotype of these mice. To evaluate the effects on unilateral ureteral obstruction (UUO)-induced renal injury, we divided the mice into the following four groups: a CRIF1flox/flox (wild-type (WT)) group, a CRIF1flox/flox-Hob7 Cre (CRIF1-KO) group, a WT-UUO group, and a CRIF1-KO UUO group. We evaluated the blood and urine chemistries, inflammatory and fibrosis markers, light microscopy, and electron microscopy of the kidneys. The inhibition of Crif1 mRNA in mIMCD cells reduced oxygen consumption and membrane potential. No significant differences in blood and urine chemistries were observed between WT and CRIF1-KO mice. In UUO mice, monocyte chemoattractant protein-1 and osteopontin expression, number of F4/80 positive cells, transforming growth factor-β and α-smooth muscle actin staining, and Masson's trichrome staining were significantly higher in the kidneys of CRIF1-KO mice compared with the kidneys of WT mice. In sham mice, urinary 8-hydroxydeoxyguanosine (8-OHDG) was higher in CRIF1-KO mice than in WT mice. Moreover, CRIF1-KO sham mice had increased 8-OHDG-positive cell recruitment compared with WT-sham mice. CRIF1-KO-UUO kidneys had increased recruitment of 8-OHDG-positive cells compared with WT-UUO kidneys. In conclusion, collecting duct-specific mitochondrial injury increased oxidative stress. Oxidative stress associated with mitochondrial damage may aggravate UUO-induced renal injury.
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Affiliation(s)
- Jin Young Jeong
- Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea; (J.Y.J.); (K.R.N.); (J.-J.K.); (K.W.L.)
| | - Ki Ryang Na
- Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea; (J.Y.J.); (K.R.N.); (J.-J.K.); (K.W.L.)
| | - Jin Ah Shin
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
| | - Kwang-Sun Suh
- Department of Pathology, Chungnam National University School of Medicine, Daejeon 35015, Korea;
| | - Jwa-Jin Kim
- Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea; (J.Y.J.); (K.R.N.); (J.-J.K.); (K.W.L.)
| | - Kang Wook Lee
- Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea; (J.Y.J.); (K.R.N.); (J.-J.K.); (K.W.L.)
| | - Dae Eun Choi
- Department of Nephrology, Chungnam National University School of Medicine, Daejeon 35015, Korea; (J.Y.J.); (K.R.N.); (J.-J.K.); (K.W.L.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
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10
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Nagar H, Kim S, Lee I, Choi SJ, Piao S, Jeon BH, Shong M, Kim CS. CRIF1 deficiency suppresses endothelial cell migration via upregulation of RhoGDI2. PLoS One 2021; 16:e0256646. [PMID: 34437633 PMCID: PMC8389428 DOI: 10.1371/journal.pone.0256646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 08/11/2021] [Indexed: 11/22/2022] Open
Abstract
Rho GDP-dissociation inhibitor (RhoGDI), a downregulator of Rho family GTPases, prevents nucleotide exchange and membrane association. It is responsible for the activation of Rho GTPases, which regulate a variety of cellular processes, such as migration. Although RhoGDI2 has been identified as a tumor suppressor gene involved in cellular migration and invasion, little is known about its role in vascular endothelial cell (EC) migration. CR6-interacting factor 1 (CRIF1) is a CR6/GADD45-interacting protein with important mitochondrial functions and regulation of cell growth. We examined the expression of RhoGDI2 in CRIF1-deficient human umbilical vein endothelial cells (HUVECs) and its role in cell migration. Expression of RhoGDI2 was found to be considerably higher in CRIF1-deficient HUVECs along with suppression of cell migration. Moreover, the phosphorylation levels of Akt and CREB were decreased in CRIF1-silenced cells. The Akt-CREB signaling pathway was implicated in the changes in endothelial cell migration caused by CRIF1 downregulation. In addition to RhoGDI2, we identified another factor that promotes migration and invasion of ECs. Adrenomedullin2 (ADM2) is an autocrine/paracrine factor that regulates vascular tone and other vascular functions. Endogenous ADM2 levels were elevated in CRIF1-silenced HUVECs with no effect on cell migration. However, siRNA-mediated depletion of RhoGDI2 or exogenous ADM2 administration significantly restored cell migration via the Akt-CREB signaling pathway. In conclusion, RhoGDI2 and ADM2 play important roles in the migration of CRIF1-deficient endothelial cells.
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Affiliation(s)
- Harsha Nagar
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Seonhee Kim
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
- Department of BK21 Plus CNU Integrative Biomedical Education Initiative, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Ikjun Lee
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
- Department of BK21 Plus CNU Integrative Biomedical Education Initiative, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Su-Jeong Choi
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Shuyu Piao
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Byeong Hwa Jeon
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Cuk-Seong Kim
- Department of Physiology and Medical Science, School of Medicine, Chungnam National University, Daejeon, Republic of Korea
- * E-mail:
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11
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Gonçalves AM, Pereira-Santos AR, Esteves AR, Cardoso SM, Empadinhas N. The Mitochondrial Ribosome: A World of Opportunities for Mitochondrial Dysfunction Toward Parkinson's Disease. Antioxid Redox Signal 2021; 34:694-711. [PMID: 32098485 DOI: 10.1089/ars.2019.7997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Significance: Mitochondrial ribosomes (mitoribosomes) are organelles that translate mitochondrial messenger RNA in the matrix and, in mammals, have evolved to translate 13 polypeptides of the pathway that performs oxidative phosphorylation (OXPHOS). Although a number of devastating diseases result from defects in this mitochondrial translation apparatus, most are associated with genetic mutations and little is known about allelopathic defects caused by antibiotics, toxins, or nonproteinogenic amino acids. Recent Advances: The levels of mitochondrial ribosomal subunits 12S and 16S ribosomal RNA (rRNA) in cells/tissues from patients carrying mutations in these genes have been associated with alterations in mitochondrial translation efficiency and with impaired OXPHOS activities, as well as with the severity of clinical phenotypes. In recent decades, important studies revealed a prominent role of mitochondrial dysfunction in Parkinson's disease (PD); however, the involvement of mitoribosomes remains largely unknown. Critical Issues: Considering that mitoribosomal structure and function can determine the efficiency of OXPHOS and that an impaired mitochondrial respiratory chain is a common finding in PD, we argue that the mitoribosome may be key to disease onset and progression. With this review, we comprehensively integrate the available knowledge on the composition, assembly, and role of the mitoribosome in mitochondrial efficiency, reflecting on its possible involvement in the etiopathogenesis of this epidemic disease as an appealing research avenue. Future Directions: If a direct correlation between mitoribosome failure and PD pathology is demonstrated, these mitochondrial organelles will provide valuable early clinical markers and potentially attractive targets for the development of innovative PD-directed therapeutic agents.
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Affiliation(s)
- Ana Mafalda Gonçalves
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Ana Raquel Pereira-Santos
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Ana Raquel Esteves
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Sandra M Cardoso
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Nuno Empadinhas
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,IIIUC-Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
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12
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Nagar H, Kim S, Lee I, Kim S, Choi SJ, Piao S, Jeon BH, Oh SH, Kim CS. Downregulation of CR6-interacting factor 1 suppresses keloid fibroblast growth via the TGF-β/Smad signaling pathway. Sci Rep 2021; 11:500. [PMID: 33436666 PMCID: PMC7804403 DOI: 10.1038/s41598-020-79785-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 12/01/2020] [Indexed: 12/29/2022] Open
Abstract
Keloids are a type of aberrant skin scarring characterized by excessive accumulation of collagen and extracellular matrix (ECM), arising from uncontrolled wound healing responses. While typically non-pathogenic, keloids are occasionally regarded as a form of benign tumor. CR6-interacting factor 1 (CRIF1) is a well-known CR6/GADD45-interacting protein, that has both nuclear and mitochondrial functions, and also exerts regulatory effects on cell growth and apoptosis. In this study, cell proliferation, cell migration, collagen production and TGF-β signaling was compared between normal fibroblasts (NFs) and keloid fibroblasts (KFs). Subsequently, the effects of CRIF1 deficiency were investigated in both NFs and KFs. Cell proliferation, cell migration, collagen production and protein expressions of TGF-β, phosphorylation of Smad2 and Smad3 were all found to be higher in KFs compared to NFs. CRIF1 deficiency in NFs and KFs inhibited cell proliferation, migration, and collagen production. In addition, phosphorylation of Smad2 and Smad3, which are transcription factors of collagen, was decreased. In contrast, mRNA expression levels of Smad7 and SMURF2, two important inhibitory proteins of Smad2/3, were increased, suggesting that CRIF1 may regulate collagen production. CRIF1 deficiency decreases the proliferation and migration of KFs, thereby inhibiting their overgrowth via the transforming growth factor-β (TGF-β)/Smad pathway. CRIF1 may therefore represent a potential therapeutic target in keloid pathogenesis.
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Affiliation(s)
- Harsha Nagar
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea
| | - Sungmin Kim
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea.,Department of BK21 Plus CNU Integrative Biomedical Education Initiative, Chungnam National University, Daejeon, Republic of Korea
| | - Ikjun Lee
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea
| | - Seonhee Kim
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea.,Department of BK21 Plus CNU Integrative Biomedical Education Initiative, Chungnam National University, Daejeon, Republic of Korea
| | - Su-Jeong Choi
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea
| | - Shuyu Piao
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea
| | - Byeong Hwa Jeon
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea
| | - Sang-Ha Oh
- Department of Plastic and Reconstructive Surgery, School of Medicine, Chungnam National University, 282 Munhwa-ro, Jung-Gu, Daejeon, 35015, Republic of Korea. .,Brain Research Institute, School of Medicine, Chungnam National University, Daejeon, Republic of Korea.
| | - Cuk-Seong Kim
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea. .,Department of Physiology, School of Medicine, Chungnam National University, 55 Munhwa-ro, Jung-Gu, Daejeon, 301-131, Republic of Korea. .,Department of BK21 Plus CNU Integrative Biomedical Education Initiative, Chungnam National University, Daejeon, Republic of Korea.
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13
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Yang F, Liu WW, Chen H, Zhu J, Huang AH, Zhou F, Gan Y, Zhang YH, Ma L. Carfilzomib inhibits the growth of lung adenocarcinoma via upregulation of Gadd45a expression. J Zhejiang Univ Sci B 2020; 21:64-76. [PMID: 31898443 DOI: 10.1631/jzus.b1900551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Proteasome inhibitors have shown remarkable success in the treatment of hematologic neoplasm. There has been a lot of attention to applying these drugs for solid tumor treatment. Recent preclinical study has signified the effectiveness on cell proliferation inhibition in lung adenocarcinoma treated by carfilzomib (CFZ), a second generation proteasome inhibitor. However, no insight has been gained regarding the mechanism. In this study, we have systematically investigated the CFZ functions in cell proliferation and growth, cell cycle arrest, and apoptosis in lung adenocarcinoma cells. Flow cytometry experiments showed that CFZ significantly induced G2/M cell cycle arrest and apoptosis in lung adenocarcinoma. MTS and colony formation assays revealed that CFZ substantially inhibited survival of lung adenocarcinoma cells. All results were consistently correlated to the upregulation expression of Gadd45a, which is an important gene in modulating cell cycle arrest and apoptosis in response to physiologic and environmental stresses. Here, upregulation of Gadd45a expression was observed after CFZ treatment. Knocking down Gadd45a expression suppressed G2/M arrest and apoptosis in CFZ-treated cells, and reduced cytotoxicity of this drug. The protein expression analysis has further identified that the AKT/FOXO3a pathway is involved in Gadd45a upregulation after CFZ treatment. These findings unveil a novel mechanism of proteasome inhibitor in anti-solid tumor activity, and shed light on novel preferable therapeutic strategy for lung adenocarcinoma. We believe that Gadd45a expression can be a highly promising candidate predictor in evaluating the efficacy of proteasome inhibitors in solid tumor therapy.
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Affiliation(s)
- Fang Yang
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Wang-Wang Liu
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Hui Chen
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Jia Zhu
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Ai-Hua Huang
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Fei Zhou
- Department of Radiology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Yi Gan
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Yan-Hua Zhang
- Department of Pathology, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
| | - Li Ma
- Department of Neurosurgery, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310006, China
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14
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Kim S, Piao S, Lee I, Nagar H, Choi SJ, Shin N, Kim DW, Shong M, Jeon BH, Kim CS. CR6 interacting factor 1 deficiency induces premature senescence via SIRT3 inhibition in endothelial cells. Free Radic Biol Med 2020; 150:161-171. [PMID: 32109515 DOI: 10.1016/j.freeradbiomed.2020.02.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 12/13/2022]
Abstract
Vascular endothelial cell senescence is an important cause of cardiac-related diseases. Mitochondrial reactive oxygen species (mtROS) have been implicated in cellular senescence and multiple cardiovascular disorders. CR6 interacting factor 1 (CRIF1) deficiency has been shown to increase mtROS via the inhibition of mitochondrial oxidative phosphorylation; however, the mechanisms by which mtROS regulates vascular endothelial senescence have not been thoroughly explored. The goal of this study was to investigate the effects of CRIF1 deficiency on endothelial senescence and to elucidate the underlying mechanisms. CRIF1 deficiency was shown to increase the activity of senescence-associated β-galactosidase along with increased expression of phosphorylated p53, p21, and p16 proteins. Cell cycle arrested in the G0/G1 phase were identified in CRIF1-deficient cells using the flow cytometry. Furthermore, CRIF1 deficiency was also shown to increase cellular senescence by reducing the expression of Sirtuin 3 (SIRT3) via ubiquitin-mediated degradation of transcription factors PGC1α and NRF2. Downregulation of CRIF1 also attenuated the function of mitochondrial antioxidant enzymes including manganese superoxide dismutase (MnSOD), Foxo3a, nicotinamide-adenine dinucleotide phosphate, and glutathione via the suppression of SIRT3. Interestingly, overexpression of SIRT3 in CRIF1-deficient endothelial cells not only reduced mtROS levels by elevating expression of the antioxidant enzyme MnSOD but also decreased the expression of cell senescence markers. Taken together, these results suggest that CRIF1 deficiency induces vascular endothelial cell senescence via ubiquitin-mediated degradation of the transcription coactivators PGC1α and NRF2, resulting in decreased expression of SIRT3.
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Affiliation(s)
- Seonhee Kim
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Shuyu Piao
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Ikjun Lee
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Harsha Nagar
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Su-Jeong Choi
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Nara Shin
- Department of Anatomy & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Dong Woon Kim
- Department of Anatomy & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Minho Shong
- Department of Endocrinology, Chungnam National University Hospital, Daejeon, 301-721, Republic of Korea
| | - Byeong Hwa Jeon
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea
| | - Cuk-Seong Kim
- Department of Physiology & Medical Science, Chungnam National University College of Medicine, Daejeon, 301-747, Republic of Korea.
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15
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Xiang LX, Ran Q, Chen L, Xiang Y, Li FJ, Zhang XM, Xiao YN, Zou LY, Zhong JF, Li SC, Li ZJ. CR6-interacting factor-1 contributes to osteoclastogenesis by inducing receptor activator of nuclear factor κB ligand after radiation. World J Stem Cells 2020; 12:222-240. [PMID: 32266053 PMCID: PMC7118287 DOI: 10.4252/wjsc.v12.i3.222] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 02/29/2020] [Accepted: 03/15/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Radiation induces rapid bone loss and enhances bone resorption and adipogenesis, leading to an increased risk of bone fracture. There is still a lack of effective preventive or therapeutic method for irradiation-induced bone injury. Receptor activator of nuclear factor κB ligand (RANKL) provides the crucial signal to induce osteoclast differentiation and plays an important role in bone resorption. However, the mechanisms of radiation-induced osteoporosis are not fully understood.
AIM To investigate the role of CR6-interacting factor-1 (Crif1) in osteoclastogenesis after radiation and its possible mechanism.
METHODS C57BL/6 mice were exposed to Co-60 gamma rays and received 5 Gy of whole-body sublethal irradiation at a rate of 0.69 Gy/min. For in vitro study, mouse bone marrow mesenchymal stem/stromal cells (BM-MSCs) were irradiated with Co-60 at a single dose of 9 Gy. For osteoclast induction, monocyte-macrophage RAW264.7 cells were cocultured with mouse BM-MSCs for 7 d. ClusPro and InterProSurf were used to investigate the interaction interface in Crif1 and protein kinase cyclic adenosine monophosphate (cAMP)-activited catalytic subunit alpha complex. Virtual screening using 462608 compounds from the Life Chemicals database around His120 of Crif1 was carried out using the program Autodock_vina. A tetrazolium salt (WST-8) assay was carried out to study the toxicity of compounds to different cells, including human BM-MSCs, mouse BM-MSCs, and Vero cells.
RESULTS Crif1 expression increased in bone marrow cells after radiation in mice. Overexpression of Crif1 in mouse BM-MSCs and radiation exposure could increase RANKL secretion and promote osteoclastogenesis in vitro. Deletion of Crif1 in BM-MSCs could reduce both adipogenesis and RANKL expression, resulting in the inhibition of osteoclastogenesis. Deletion of Crif1 in RAW264.7 cells did not affect the receptor activator of nuclear factor κB expression or osteoclast differentiation. Following treatment with protein kinase A (PKA) agonist (forskolin) and inhibitor (H-89) in mouse BM-MSCs, Crif1 induced RANKL secretion via the cAMP/PKA pathway. Moreover, we identified the Crif1-protein kinase cyclic adenosine monophosphate-activited catalytic subunit alpha interaction interface by in silico studies and shortlisted interface inhibitors through virtual screening on Crif1. Five compounds dramatically suppressed RANKL secretion and adipogenesis by inhibiting the cAMP/PKA pathway.
CONCLUSION Crif1 promotes RANKL expression via the cAMP/PKA pathway, which induces osteoclastogenesis by binding to receptor activator of nuclear factor κB on monocytes-macrophages in the mouse model. These results suggest a role for Crif1 in modulating osteoclastogenesis and provide insights into potential therapeutic strategies targeting the balance between osteogenesis and adipogenesis for radiation-induced bone injury.
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Affiliation(s)
- Li-Xin Xiang
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Qian Ran
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
- Department of Otolaryngology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States
| | - Li Chen
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Yang Xiang
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
- Department of Otolaryngology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States
| | - Feng-Jie Li
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Xiao-Mei Zhang
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Yan-Ni Xiao
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
| | - Ling-Yun Zou
- Bioinformatics Center, College of Basic Medical Sciences, Third Military Medical University, Chongqing 400038, China
| | - Jiang F Zhong
- Department of Otolaryngology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, United States
| | - Shengwen Calvin Li
- CHOC Children’s Research Institute, Children’s Hospital of Orange County, University of California, Irvine, CA 92868, United States
| | - Zhong-Jun Li
- Laboratory Medicine Center, Department of Blood Transfusion, Lab of Radiation Biology, The Second Affiliated Hospital, Third Military Medical University, Chongqing, 400037, China
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16
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Qiao J, Li H, Li Y. Dietary Clostridium butyricum supplementation modifies significantly the liver transcriptomic profile in weaned piglets. J Anim Physiol Anim Nutr (Berl) 2020; 104:1410-1423. [PMID: 32207194 DOI: 10.1111/jpn.13326] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/20/2019] [Accepted: 01/20/2020] [Indexed: 12/12/2022]
Abstract
The addition of probiotics in swine nutrition is known to positively influence both health and growth. The current study investigates differences in the hepatic transcriptome profiles between weaned piglets supplemented with Clostridium butyricum (C. butyricum) and control animals that received no probiotic. The liver is an important metabolic organ that plays a critical role in oxidizing triglycerides for energy production, lipid synthesis and degradation, as well as immune regulation in animals. RNA-Seq analysis was carried out on total RNA harvested from the liver of piglets fed with (n = 3) or without (n = 3) 5 × 105 C. butyricum CFU/g. Compared to the control piglets, 588 of the genes examined (352 up-regulated and 236 down-regulated) were significantly differentially expressed at a fold change > 2 and p < .05 in animals fed with C. butyricum. Quantitative real-time reverse transcription PCR (qRT-PCR) analysis was further used to validate the microarray expression results for 28 genes tested. The functional annotation analyses revealed several genes, processes and pathways with putative involvement in piglet growth and performance. Feeding swine with 5 × 105 C. butyricum CFU/g appears to reinforce their immune status as well as foster the cell cycle and improve the metabolism of carbohydrates, lipids and amino acids. This study provides valuable information about the expression profiles of mRNAs in piglet liver and in-depth functional investigations of these mRNAs that could provide new insights into the molecular networks of growth, immune responses and nutrient metabolism in the porcine liver.
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Affiliation(s)
- Jiayun Qiao
- Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, China
| | - Haihua Li
- Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Husbandry, College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin, China
| | - Yupeng Li
- Tianjin Institute of Animal Husbandry and Veterinary Medicine, Tianjin, China
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17
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CRIF1 as a potential target to improve the radiosensitivity of osteosarcoma. Proc Natl Acad Sci U S A 2019; 116:20511-20516. [PMID: 31548420 DOI: 10.1073/pnas.1906578116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Resistance to ionizing radiation (IR), which is a conventional treatment for osteosarcoma that cannot be resected, undermines the efficacy of this therapy. However, the mechanism by which IR induces radioresistance in osteosarcoma is not defined. Here, we report that CR6-interacting factor-1 (CRIF1) is highly expressed in osteosarcoma and undergoes nuclear-cytoplasmic shuttling of cyclin-dependent kinase 2 (CDK2) after IR. Osteosarcoma cells lacking CRIF1 show increased sensitivity to IR, which is associated with delayed DNA damage repair, inactivated G1/S checkpoint, and mitochondrial dysfunction. CRIF1 interacts with the DNA damage checkpoint regulator CDK2, and CRIF1 and CDK2 colocalize in the nucleus after IR. Nuclear localization of CDK2 is associated with phosphorylation changes that promote DNA repair and activation of the G1/S checkpoint. CRIF1 knockdown synergized with IR in an in vivo osteosarcoma model, leading to tumor regression. Based on these findings, we identify CRIF1 as a potential therapeutic target in osteosarcoma that can increase the efficacy of radiotherapy. More broadly, our findings may provide insights into the mechanism for other types of radioresistant cancers and be exploited for therapeutic ends.
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18
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Park J, Choi S, Hwang S, Kim S, Choi J, Jung K, Kwon JY, Kong Y, Cho M, Park S. CR6-interacting factor 1 controls autoimmune arthritis by regulation of signal transducer and activator of transcription 3 pathway and T helper type 17 cells. Immunology 2019; 156:413-421. [PMID: 30585643 PMCID: PMC6418438 DOI: 10.1111/imm.13042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 10/31/2018] [Accepted: 12/11/2018] [Indexed: 12/17/2022] Open
Abstract
CR6-interacting factor 1 (CRIF1) is a nuclear protein that interacts with other nuclear factors and androgen receptors, and is implicated in the regulation of cell cycle progression and cell growth. In this study, we examined whether CRIF1 exerts an immunoregulatory effect by modulating the differentiation and function of pathogenic T cells. To this end, the role of CRIF1 in rheumatoid arthritis, a systemic autoimmune disease characterized by hyperplasia of synovial tissue and progressive destruction of articular cartilage structure by pathogenic immune cells [such as T helper type 17 (Th17) cells], was investigated. p3XFLAG-CMV-10-CRIF1 was administered to mice with collagen-induced arthritis 8 days after collagen type II immunization and the disease severity and histologic evaluation, and osteoclastogenesis were assessed. CRIF1 over-expression in mice with collagen-induced arthritis attenuated the clinical and histological signs of inflammatory arthritis. Furthermore, over-expression of CRIF1 in mice with arthritis significantly reduced the number of signal transducer and activator of transcription 3-mediated Th17 cells in the spleen as well as osteoclast differentiation from bone marrow cells. To investigate the impact of loss of CRIF1 in T cells, we generated a conditional CRIF1 gene ablation model using CD4-cre transgenic mice and examined the frequency of Th17 cells and regulatory T cells. Deficiency of CRIF1 in CD4+ cells promoted the production of interleukin-17 and reduced the frequency of regulatory T cells. These results suggest a role for CRIF1 in modulating the activities of Th17 cells and osteoclasts in rheumatoid arthritis.
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Affiliation(s)
- Jin‐Sil Park
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - Si‐Young Choi
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - Sun‐Hee Hwang
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - Sung‐Min Kim
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - JeongWon Choi
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - Kyung‐Ah Jung
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - Ji Ye Kwon
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
| | - Young‐Yun Kong
- School of Biological SciencesSeoul National UniversitySeoulSouth Korea
| | - Mi‐La Cho
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
- Department of Medical Life ScienceCollege of MedicineThe Catholic University of KoreaSeoulKorea
- Department of Biomedicine & Health Sciences, College of MedicineThe Catholic University of KoreaSeoulKorea
| | - Sung‐Hwan Park
- The Rheumatism Research CenterCatholic Research Institute of Medical ScienceThe Catholic University of KoreaSeoulSouth Korea
- Divison of RheumatologyDepartment of Internal MedicineThe Catholic University of KoreaSeoulSouth Korea
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Li L, Zhang J, Zhang Q, Huang Y, Hu J. Cardiac proteomics reveals the potential mechanism of microtubule associated protein 4 phosphorylation-induced mitochondrial dysfunction. BURNS & TRAUMA 2019; 7:8. [PMID: 30906793 PMCID: PMC6410511 DOI: 10.1186/s41038-019-0146-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 02/12/2019] [Indexed: 01/26/2023]
Abstract
Background Our previous work suggested that microtubule associated protein 4 (MAP4) phosphorylation led to mitochondrial dysfunction in MAP4 phosphorylation mutant mice with cardiomyopathy, but the detailed mechanism was still unknown. Thus, the aim of this study was to investigate the potential mechanism involved in mitochondrial dysfunction responsible for cardiomyopathy. Methods The present study was conducted to explore the potential mechanism underlying the mitochondrial dysfunction driven by MAP4 phosphorylation. Strain of mouse that mimicked constant MAP4 phosphorylation (S737 and S760) was generated. The isobaric tag for relative and absolute quantitation (iTRAQ) analysis was applied to the heart tissue. Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), and protein-protein interaction (PPI) were all analyzed on the basis of differential expressed proteins (DEPs). Results Among the 72 cardiac DEPs detected between the two genotypes of mice, 12 were upregulated and 60 were downregulated. GO analysis showed the biological process, molecular function, and cellular component of DEPs, and KEGG enrichment analysis linked DEPs to 96 different biochemical pathways. In addition, the PPI network was also extended on the basis of DEPs as the seed proteins. Three proteins, including mitochondrial ubiquitin ligase activator of NF-κB 1, reduced form of nicotinamide adenine dinucleotide (NADH)-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial and growth arrest, and DNA-damage-inducible proteins-interacting protein 1, which play an important role in the regulation of mitochondrial function, may correlate with MAP4 phosphorylation-induced mitochondrial dysfunction. Western blot was used to validate the expression of the three proteins, which was consistent with iTRAQ experiments. Conclusions These findings revealed that the DEPs caused by MAP4 phosphorylation in heart tissue using iTRAQ technique and may provide clues to uncover the potential mechanism of MAP4 phosphorylation-induced mitochondrial dysfunction. Electronic supplementary material The online version of this article (10.1186/s41038-019-0146-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lingfei Li
- 1Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street, Shapingba District, Chongqing, 400038 China
| | - Junhui Zhang
- 1Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street, Shapingba District, Chongqing, 400038 China
| | - Qiong Zhang
- 1Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street, Shapingba District, Chongqing, 400038 China
| | - Yuesheng Huang
- 1Institute of Burn Research, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street, Shapingba District, Chongqing, 400038 China
| | - Jiongyu Hu
- 2Endocrinology Department, State Key Laboratory of Trauma, Burns and Combined Injury, Southwest Hospital, Third Military Medical University (Army Medical University), Gaotanyan Street, Shapingba District, Chongqing, 400038 China
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20
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Ran Q, Xiang Y, Stephen P, Wu C, Li T, Lin SX, Li Z. CRIF1-CDK2 Interface Inhibitors: An Unprecedented Strategy for Modulation of Cell Radiosensitivity. J Am Chem Soc 2019; 141:1420-1424. [PMID: 30653304 DOI: 10.1021/jacs.8b10207] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cyclin-dependent kinases (CDKs) are historic therapeutic targets implicated in tumorigenic events due to their critical involvement in the cell cycle phase. However, selectivity has proven to be a bottleneck, causing repeated failures. Previously, we reported CR6-interacting factor 1 (CRIF1), acting as a cell cycle negative regulator through interaction with CDK2. In the current report, we identified the CRIF1-CDK2 interaction interface by in silico studies and shortlisted interface inhibitors through virtual screening on CRIF1 using 40 678 drug-like compounds. These compounds were tested by cell proliferation assay, and four of these molecules were found to selectively inhibit the proliferation of osteosarcoma (OS) cell lines, but do not affect normal bone mesenchymal stem cells (BMSC). A binding study reveals significant affinities of the inhibitors on CRIF1. More importantly, treatment of the OS cells with a combination of ionizing radiation (IR) and the best-performing inhibitors remarkably increased IR inhibition potential from 19.9% to 59.6%. This occurred by selectively promoting G2/M arrest and apoptosis related to CDK2 overactivation in OS cells but not in BMSC and was supported by significant CDK2 phosphorylation modifications. Knocking down of CRIF1 by siRNA treatment showed similar effects to the interface inhibitors. Together we substantiate the identification of novel lead molecules, which may provide a new treatment to overcome selectivity issues and enhance the radiosensitivity of tumor cells, opening a conceptually novel strategy of CDK-targeting for different cancer types.
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Affiliation(s)
- Qian Ran
- Department of Blood Transfusion, Irradiation Biology Laboratory , Xinqiao Hospital , Chongqing , 400037 , China
| | - Yang Xiang
- Department of Blood Transfusion, Irradiation Biology Laboratory , Xinqiao Hospital , Chongqing , 400037 , China
| | - Preyesh Stephen
- Axe Molecular Endocrinology and Nephrology , CHU Research Center and Laval University , Québec City , Québec G1V 4G2 , Canada
| | - Chun Wu
- Department of Blood Transfusion, Irradiation Biology Laboratory , Xinqiao Hospital , Chongqing , 400037 , China
| | - Tang Li
- Axe Molecular Endocrinology and Nephrology , CHU Research Center and Laval University , Québec City , Québec G1V 4G2 , Canada
| | - Sheng-Xiang Lin
- Axe Molecular Endocrinology and Nephrology , CHU Research Center and Laval University , Québec City , Québec G1V 4G2 , Canada
| | - Zhongjun Li
- Department of Blood Transfusion, Irradiation Biology Laboratory , Xinqiao Hospital , Chongqing , 400037 , China
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STAT3 Interactors as Potential Therapeutic Targets for Cancer Treatment. Int J Mol Sci 2018; 19:ijms19061787. [PMID: 29914167 PMCID: PMC6032216 DOI: 10.3390/ijms19061787] [Citation(s) in RCA: 87] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/13/2018] [Accepted: 06/14/2018] [Indexed: 02/07/2023] Open
Abstract
Signal transducers and activators of transcription (STATs) mediate essential signaling pathways in different biological processes, including immune responses, hematopoiesis, and neurogenesis. Among the STAT members, STAT3 plays crucial roles in cell proliferation, survival, and differentiation. While STAT3 activation is transient in physiological conditions, STAT3 becomes persistently activated in a high percentage of solid and hematopoietic malignancies (e.g., melanoma, multiple myeloma, breast, prostate, ovarian, and colon cancers), thus contributing to malignant transformation and progression. This makes STAT3 an attractive therapeutic target for cancers. Initial strategies aimed at inhibiting STAT3 functions have focused on blocking the action of its activating kinases or sequestering its DNA binding ability. More recently, the diffusion of proteomic-based techniques, which have allowed for the identification and characterization of novel STAT3-interacting proteins able to modulate STAT3 activity via its subcellular localization, interact with upstream kinases, and recruit transcriptional machinery, has raised the possibility to target such cofactors to specifically restrain STAT3 oncogenic functions. In this article, we summarize the available data about the function of STAT3 interactors in malignant cells and discuss their role as potential therapeutic targets for cancer treatment.
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22
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Kim BJ, Chan DW, Jung SY, Chen Y, Qin J, Wang Y. The Histone Variant MacroH2A1 Is a BRCA1 Ubiquitin Ligase Substrate. Cell Rep 2018; 19:1758-1766. [PMID: 28564596 DOI: 10.1016/j.celrep.2017.05.027] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 04/03/2017] [Accepted: 05/08/2017] [Indexed: 12/16/2022] Open
Abstract
The breast- and ovarian-cancer-specific tumor suppressor BRCA1 and its heterodimeric partner BARD1 contain RING domains that implicate them as E3 ubiquitin ligases. Despite extensive efforts, the bona fide substrates of BRCA1/BARD1 remain elusive. Here, we used recombinant GST fused to four UBA domains to enrich ubiquitinated proteins followed by a Lys-ε-Gly-Gly (diGly) antibody to enrich ubiquitinated tryptic peptides. This tandem affinity purification method coupled with mass spectrometry identified 101 putative BRCA1/BARD1 E3 substrates. We identified the histone variant macroH2A1 from the screen and showed that BRCA1/BARD1 ubiquitinates macroH2A1 at lysine 123 in vitro and in vivo. Primary human fibroblasts stably expressing a ubiquitination-deficient macroH2A1 mutant were defective in cellular senescence compared to their wild-type counterpart. Our study demonstrates that BRCA1/BARD1 is a macroH2A1 E3 ligase and implicates a role for macroH2A1 K123 ubiquitination in cellular senescence.
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Affiliation(s)
- Beom-Jun Kim
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Doug W Chan
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Sung Yun Jung
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yue Chen
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jun Qin
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA; National Center for Protein Sciences and Beijing Proteome Research Center, Beijing 102206, China.
| | - Yi Wang
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
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CR6-interacting factor 1 inhibits invasiveness by suppressing TGF-β-mediated epithelial-mesenchymal transition in hepatocellular carcinoma. Oncotarget 2017; 8:94759-94768. [PMID: 29212264 PMCID: PMC5706910 DOI: 10.18632/oncotarget.21925] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 08/09/2017] [Indexed: 02/07/2023] Open
Abstract
CR6-interacting factor 1 (CRIF1) regulates cell cycle progression and the DNA damage response. Here, we show that CRIF1 expression is decreased in hepatocellular carcinoma (HCC) tissues and positively correlates with patients’ survival. In vitro, down-regulation of CRIF1 promotes HCC cell proliferation and invasiveness, while over-expression has the opposite effect. in vivo, CRIF1 knockdown enhances growth of HCC xenografts. Analysis of mRNA microarrays showed that CRIF1 knockdown activates genes involved in TGF-β RI/Smad2/3 signaling, leading to epithelial-mesenchymal transition (EMT) and increased matrix metalloproteinase-3 (MMP3) expression. However, cell invasion and EMT are abrogated in HCC cells treated with SB525334, a specific TGF-β RI inhibitor, which indicates the inhibitory effect of CRIF1 on HCC tumor growth is mediated by TGF-β signaling. These results demonstrate that CRIF1 benefits patient survival by inhibiting HCC cell invasiveness through suppression of TGF-β-mediated EMT and MMP3 expression. This suggests CRIF1 may serve as a novel target for inhibiting HCC metastasis.
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Nagar H, Jung SB, Ryu MJ, Choi SJ, Piao S, Song HJ, Kang SK, Shin N, Kim DW, Jin SA, Jeong JO, Irani K, Jeon BH, Shong M, Kweon GR, Kim CS. CR6-Interacting Factor 1 Deficiency Impairs Vascular Function by Inhibiting the Sirt1-Endothelial Nitric Oxide Synthase Pathway. Antioxid Redox Signal 2017; 27:234-249. [PMID: 28117598 DOI: 10.1089/ars.2016.6719] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIMS Mitochondrial dysfunction has emerged as a major contributing factor to endothelial dysfunction and vascular disease, but the key mechanisms underlying mitochondrial dysfunction-induced endothelial dysfunction remain to be elucidated. In this study, we aim at determining whether mitochondrial dysfunction in endothelial cells plays a key role in vascular disease, by examining the phenotype of endothelial-specific CR6-interacting factor 1 (CRIF1) knockout mice. We also used siRNA-mediated downregulation of CRIF1 gene in the endothelial cells to study about the in vitro pathophysiological underlying mechanisms. RESULTS Downregulation of CRIF1 in endothelial cells caused disturbances of mitochondrial oxidative phosphorylation complexes and membrane potential, leading to enhanced mitochondrial reactive oxygen species production. Gene silencing of CRIF1 results in decreased SIRT1 expression along with increased endothelial nitric oxide synthase (eNOS) acetylation, leading to reduced nitric oxide production both in vitro and in vivo. Endothelium-dependent vasorelaxation of aortic rings from CRIF1 knockout (KO) mice was considerably less than in wild-type mice, and it was partially recovered by Sirt1 overexpression in CRIF1 KO mice. INNOVATION Our results show for the first time a relationship between mitochondrial dysfunction and impaired vascular function induced in CRIF1 deficiency conditions and also the possible underlying pathway involved. CONCLUSION These findings indicate that CRIF1 plays an important role in maintaining mitochondrial and endothelial function through its effects on the SIRT1-eNOS pathway. Antioxid. Redox Signal. 27, 234-249.
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Affiliation(s)
- Harsha Nagar
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Saet-Byel Jung
- 3 Department of Endocrinology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Min Jeong Ryu
- 4 Department of Biochemistry, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Su-Jung Choi
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Shuyu Piao
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Hee-Jung Song
- 5 Department of Neurology, Chungnam National University Hospital , Daejeon, Republic of Korea
| | - Shin Kwang Kang
- 6 Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital , Daejeon, Republic of Korea
| | - Nara Shin
- 2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,7 Department of Anatomy, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Dong Woon Kim
- 2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,7 Department of Anatomy, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Seon-Ah Jin
- 8 Division of Cardiology, Department of Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine , Daejeon, Republic of Korea
| | - Jin-Ok Jeong
- 8 Division of Cardiology, Department of Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine , Daejeon, Republic of Korea
| | - Kaikobad Irani
- 9 Division of Cardiovascular Medicine, Department of Internal Medicine, University of Iowa Carver College of Medicine , Iowa City, Iowa
| | - Byeong Hwa Jeon
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Minho Shong
- 3 Department of Endocrinology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Gi Ryang Kweon
- 2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,4 Department of Biochemistry, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Cuk-Seong Kim
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
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Chen L, Ran Q, Xiang Y, Xiang L, Chen L, Li F, Wu J, Wu C, Li Z. Co-Activation of PKC-δ by CRIF1 Modulates Oxidative Stress in Bone Marrow Multipotent Mesenchymal Stromal Cells after Irradiation by Phosphorylating NRF2 Ser40. Theranostics 2017; 7:2634-2648. [PMID: 28819452 PMCID: PMC5558558 DOI: 10.7150/thno.17853] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 04/19/2017] [Indexed: 12/26/2022] Open
Abstract
The high mortality associated with pancytopenia and multi-organ failure resulting from hematopoietic disorders of acute radiation syndrome (h-ARS) creates an urgent need for developing more effective treatment strategies. Here, we showed that bone marrow multipotent mesenchymal stromal cells (BMMSCs) effectively regulate oxidative stress following radiative injury, which might be on account of irradiation-induced elevation of protein levels of CR6-interacting factor 1(CRIF1) and nuclear factor E2-related factor 2(NRF2). Crif1-knockdown BMMSCs presented increased oxidative stress and apoptosis after irradiation, which were partially due to a suppressed antioxidant response mediated by decreased NRF2 nuclear translocation. Co-immunoprecipitation (Co-IP) experiments indicated that CRIF1 interacted with protein kinase C-δ (PKC-δ). NRF2 Ser40 phosphorylation was inhibited in Crif1-deficient BMMSCs even in the presence of three kinds of PKC agonists, suggesting that CRIF1 might co-activate PKC-δ to phosphorylate NRF2 Ser40. After radiative injury, the supporting effect of BMMSCs for the colony forming ability of HSCs in vitro was reduced, and the deficiency of CRIF1 aggravated such damage. Thus, CRIF1 plays an essential role in PKC-δ/NRF2 pathway modulation to alleviate oxidative stress in BMMSCs after irradiative injury, and at some level it may maintain the HSCs-supporting effect of BMMSCs after radiative injuries.
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Nakayama K, Rahman M, Rahman MT, Nakamura K, Sato E, Katagiri H, Ishibashi T, Ishikawa M, Iida K, Razia S, Ishikawa N, Kyo S. Nucleus accumbens-1/GADD45GIP1 axis mediates cisplatin resistance through cellular senescence in ovarian cancer. Oncol Lett 2017; 13:4713-4719. [PMID: 28599472 PMCID: PMC5453174 DOI: 10.3892/ol.2017.6099] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 01/04/2017] [Indexed: 01/25/2023] Open
Abstract
Nucleus accumbens-1 (NAC1), a nuclear factor belonging to the bric-a-brac-tramtrack-broad complex/pox virus and zinc finger gene family, is known to serve important roles in the proliferation and growth of tumor cells, and in chemotherapy resistance. However, the underlying molecular mechanisms through which NAC1 contributes to drug resistance remain unclear. In the present study, the role of NAC1 in drug resistance in ovarian cancer was investigated. NAC1 expression was markedly negatively associated with growth arrest and DNA-damage-inducible 45γ-interacting protein 1 (GADD45GIP1) expression in ovarian cancer. Increased NAC1 expression or decreased GADD45GIP1 expression was significantly associated with decreased progression-free survival (P=0.0041). Multivariate analysis demonstrated that NAC1/GADD45GIP1 expression was an independent prognostic factor of progression-free survival (P=0.0405). It was investigated whether cellular senescence was involved in NAC1-mediated resistance to cisplatin, a commonly used chemotherapeutic drug in the treatment of ovarian cancer. Treatment with cisplatin activated cellular senescence in ovarian cancer cell lines (SKOV3 and TOV-21G cells). Furthermore, knockdown of NAC1 by RNA interference significantly increased GADD45GIP1 expression and inhibited cisplatin-induced cellular senescence, resulting in increased cisplatin cytotoxicity in SKOV3 cells, which express increased levels of NAC1. To investigate whether the sensitizing effect of NAC1 inhibition on cisplatin-induced cytotoxicity may be attributed to the suppression of cellular senescence, the effects of NAC1 overexpression were assessed in TOV-21G cells, which do not express endogenous NAC1. Transfection with NAC1 in TOV-21G cells reduced the sensitivity of TOV-21G cells to cisplatin, indicating that suppression of cellular senescence was induced by GADD45GP1 activation. The results of the present study suggest that NAC1 is a negative regulator of cellular senescence and that NAC1-dependent suppression of senescence, mediated through GADD45GIP1, serves an important role in promoting cisplatin resistance. Therefore, the NAC1/GADD45GIP1 axis may be a potential target for the treatment of ovarian cancer, particularly in platinum-resistant cancers.
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Affiliation(s)
- Kentaro Nakayama
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Munmun Rahman
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Mohammed Tanjimur Rahman
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Kohei Nakamura
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Emi Sato
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Hiroshi Katagiri
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Tomoka Ishibashi
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Masako Ishikawa
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Kouji Iida
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Sultana Razia
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Noriyuki Ishikawa
- Department of Organ Pathology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
| | - Satoru Kyo
- Department of Obstetrics and Gynecology, Shimane University School of Medicine, Izumo, Shimane 6938501, Japan
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Abstract
Mitochondria play fundamental roles in the regulation of life and death of eukaryotic cells. They mediate aerobic energy conversion through the oxidative phosphorylation (OXPHOS) system, and harbor and control the intrinsic pathway of apoptosis. As a descendant of a bacterial endosymbiont, mitochondria retain a vestige of their original genome (mtDNA), and its corresponding full gene expression machinery. Proteins encoded in the mtDNA, all components of the multimeric OXPHOS enzymes, are synthesized in specialized mitochondrial ribosomes (mitoribosomes). Mitoribosomes are therefore essential in the regulation of cellular respiration. Additionally, an increasing body of literature has been reporting an alternative role for several mitochondrial ribosomal proteins as apoptosis-inducing factors. No surprisingly, the expression of genes encoding for mitoribosomal proteins, mitoribosome assembly factors and mitochondrial translation factors is modified in numerous cancers, a trait that has been linked to tumorigenesis and metastasis. In this article, we will review the current knowledge regarding the dual function of mitoribosome components in protein synthesis and apoptosis and their association with cancer susceptibility and development. We will also highlight recent developments in targeting mitochondrial ribosomes for the treatment of cancer.
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28
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Yan HX, Zhang YJ, Zhang Y, Ren X, Shen YF, Cheng MB, Zhang Y. CRIF1 enhances p53 activity via the chromatin remodeler SNF5 in the HCT116 colon cancer cell lines. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2017; 1860:516-522. [DOI: 10.1016/j.bbagrm.2017.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 02/17/2017] [Accepted: 02/18/2017] [Indexed: 12/28/2022]
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Targeted deletion of Crif1 in mouse epidermis impairs skin homeostasis and hair morphogenesis. Sci Rep 2017; 7:44828. [PMID: 28317864 PMCID: PMC5357846 DOI: 10.1038/srep44828] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 02/14/2017] [Indexed: 12/27/2022] Open
Abstract
The epidermis, which consists mainly of keratinocytes, acts as a physical barrier to infections by regulating keratinocyte proliferation and differentiation. Hair follicles undergo continuous cycling to produce new one. Therefore, optimum supply of energy from the mitochondria is essential for maintaining skin homeostasis and hair growth. CRIF1 is a mitochondrial protein that regulates mitoribosome-mediated synthesis and insertion of mitochondrial oxidative phosphorylation polypeptides into the mitochondrial membrane in mammals. Recent studies reveal that conditional knockout (cKO) of Crif1 in specific tissues of mice induced mitochondrial dysfunction. To determine whether the mitochondrial function of keratinocytes affects skin homeostasis and hair morphogenesis, we generated epidermis-specific Crif1 cKO mice. Deletion of Crif1 in epidermis resulted in impaired mitochondrial function and Crif1 cKO mice died within a week. Keratinocyte proliferation and differentiation were markedly inhibited in Crif1 cKO mice. Furthermore, hair follicle morphogenesis of Crif1 cKO mice was disrupted by down-regulation of Wnt/β-catenin signaling. These results demonstrate that mitochondrial function in keratinocytes is essential for maintaining epidermal homeostasis and hair follicle morphogenesis.
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30
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Zhang X, Xiang L, Ran Q, Liu Y, Xiang Y, Xiao Y, Chen L, Li F, Zhong JF, Li Z. Crif1 Promotes Adipogenic Differentiation of Bone Marrow Mesenchymal Stem Cells After Irradiation by Modulating the PKA/CREB Signaling Pathway. Stem Cells 2016; 33:1915-26. [PMID: 25847389 DOI: 10.1002/stem.2019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Revised: 02/12/2015] [Accepted: 02/28/2015] [Indexed: 12/22/2022]
Abstract
Dysfunction of the hematopoietic microenvironment is the main obstacle encountered during hematopoiesis reconstruction in patients with acute hematopoietic radiation syndrome. Bone marrow mesenchymal stem cells (BM-MSCs) play a crucial supporting role in hematopoiesis by maintaining the balance between adipogenic and osteogenic differentiation. In this study, we found that irradiation decreased the colony-forming efficiency of BM-MSCs and impaired the balance between adipogenic and osteogenic differentiation. Following irradiation, BM-MCSs became strongly predisposed to adipogenesis, as evidenced by increased oil red O staining and elevated mRNA and protein levels of the adipogenic markers and transcription factors PPARγ and AP2. Overexpression of the essential adipogenesis regulator Crif1 in BM-MSCs promoted adipogenesis after irradiation exposure by upregulating adipogenesis-related genes, including C/EBPβ, PPARγ, and AP2. We found that Crif1 promoted the phosphorylation of cAMP response element binding protein (CREB) through direct interaction with protein kinase A (PKA)-α. Phosphorylation of CREB was inhibited in Crif1-knockdown BM-MSCs even in the presence of a PKA agonist (db-cAMP) and could be suppressed in Crif1-overexpressing BM-MSCs by a PKAα inhibitor (H-89). These results suggest that Crif1 is an indispensable regulator of PKAα cat that modulates the PKA/CREB signaling pathway to promote adipogenic differentiation of BM-MSCs after irradiation.
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Affiliation(s)
- Xi Zhang
- Department of Hematology and, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Lixin Xiang
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Qian Ran
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Yao Liu
- Department of Hematology and, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Yang Xiang
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Yanni Xiao
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Li Chen
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Fengjie Li
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Jiang F Zhong
- Department of Pathology, University of Southern California, Keck School of Medicine, California, USA
| | - Zhongjun Li
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
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Lim SJ, Scott A, Xiong XP, Vahidpour S, Karijolich J, Guo D, Pei S, Yu YT, Zhou R, Li WX. Requirement for CRIF1 in RNA interference and Dicer-2 stability. RNA Biol 2015; 11:1171-9. [PMID: 25483042 DOI: 10.4161/rna.34381] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
RNA interference (RNAi) is a eukaryotic gene-silencing system. Although the biochemistry of RNAi is relatively well defined, how this pathway is regulated remains incompletely understood. To identify genes involved in regulating the RNAi pathway, we screened for genetic mutations in Drosophila that alter the efficiency of RNAi. We identified the Drosophila homolog of the mammalian CR6-interacting factor 1 (CRIF1), also known as growth arrest and DNA-damage-inducible 45-gamma interacting protein (Gadd45GIP1), as a potential new regulator of the RNAi pathway. Loss-of-function mutants of Drosophila CRIF1 (dCRIF) are deficient in RNAi-mediated target gene knock-down, in the biogenesis of small interfering RNA (siRNA) molecules, and in antiviral immunity. Moreover, we show that dCRIF may function by interacting with, and stabilizing, the RNase III enzyme Dicer-2. Our results suggest that dCRIF may play an important role in regulating the RNAi pathway.
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Affiliation(s)
- Su Jun Lim
- a Department of Medicine ; University of California San Diego ; La Jolla , CA USA
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Vahedi S, Chueh FY, Dutta S, Chandran B, Yu CL. Nuclear lymphocyte-specific protein tyrosine kinase and its interaction with CR6-interacting factor 1 promote the survival of human leukemic T cells. Oncol Rep 2015; 34:43-50. [PMID: 25997448 PMCID: PMC4484609 DOI: 10.3892/or.2015.3990] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Accepted: 05/06/2015] [Indexed: 11/28/2022] Open
Abstract
Overexpression and hyperactivation of lymphocyte-specific protein tyrosine kinase (Lck) have been associated with leukemia development. We previously showed that, other than its known function as a cytoplasmic signal transducer, Lck also acts as a nuclear transcription factor in mouse leukemic cells. In the present study, we demonstrated the presence of nuclear Lck in human leukemic T cells and in primary cells. We further established a positive correlation between Lck nuclear localization and its kinase activity. Proteomic analysis identified CR6-interacting factor 1 (CRIF1) as one of the Lck-interacting proteins. CRIF1 and Lck association in the nucleus was confirmed both by immunofluorescence microscopy and co-immunoprecipitation in human leukemic T cells. Close-range interaction between Lck and CRIF1 was validated by in situ proximity ligation assay (PLA). Consistent with the role of nuclear CRIF1 as a tumor suppressor, CRIF1 silencing promotes leukemic T cell survival in the absence of growth factors. This protective effect can be recapitulated by endogenous Lck or reconstituted Lck in leukemic T cells. All together, our results support a novel function of nuclear Lck in promoting human leukemic T cell survival through interaction with a tumor suppressor. It has important implications in defining a paradigm shift of non-canonical protein tyrosine kinase signaling.
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Affiliation(s)
- Shahrooz Vahedi
- Department of Microbiology and Immunology, H.M. Bligh Cancer Research Laboratories, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - Fu-Yu Chueh
- Department of Microbiology and Immunology, H.M. Bligh Cancer Research Laboratories, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - Sujoy Dutta
- Department of Microbiology and Immunology, H.M. Bligh Cancer Research Laboratories, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - Bala Chandran
- Department of Microbiology and Immunology, H.M. Bligh Cancer Research Laboratories, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
| | - Chao-Lan Yu
- Department of Microbiology and Immunology, H.M. Bligh Cancer Research Laboratories, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL 60064, USA
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Brown A, Amunts A, Bai XC, Sugimoto Y, Edwards PC, Murshudov G, Scheres SHW, Ramakrishnan V. Structure of the large ribosomal subunit from human mitochondria. Science 2014; 346:718-722. [PMID: 25278503 DOI: 10.1126/science.1258026] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Human mitochondrial ribosomes are highly divergent from all other known ribosomes and are specialized to exclusively translate membrane proteins. They are linked with hereditary mitochondrial diseases and are often the unintended targets of various clinically useful antibiotics. Using single-particle cryogenic electron microscopy, we have determined the structure of its large subunit to 3.4 angstrom resolution, revealing 48 proteins, 21 of which are specific to mitochondria. The structure unveils an adaptation of the exit tunnel for hydrophobic nascent peptides, extensive remodeling of the central protuberance, including recruitment of mitochondrial valine transfer RNA (tRNA(Val)) to play an integral structural role, and changes in the tRNA binding sites related to the unusual characteristics of mitochondrial tRNAs.
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Affiliation(s)
- Alan Brown
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Alexey Amunts
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Xiao-Chen Bai
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Yoichiro Sugimoto
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Patricia C Edwards
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Garib Murshudov
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Sjors H W Scheres
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - V Ramakrishnan
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
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Wang W, Nag S, Zhang X, Wang MH, Wang H, Zhou J, Zhang R. Ribosomal proteins and human diseases: pathogenesis, molecular mechanisms, and therapeutic implications. Med Res Rev 2014; 35:225-85. [PMID: 25164622 DOI: 10.1002/med.21327] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Ribosomes are essential components of the protein synthesis machinery. The process of ribosome biogenesis is well organized and tightly regulated. Recent studies have shown that ribosomal proteins (RPs) have extraribosomal functions that are involved in cell proliferation, differentiation, apoptosis, DNA repair, and other cellular processes. The dysfunction of RPs has been linked to the development and progression of hematological, metabolic, and cardiovascular diseases and cancer. Perturbation of ribosome biogenesis results in ribosomal stress, which triggers activation of the p53 signaling pathway through RPs-MDM2 interactions, resulting in p53-dependent cell cycle arrest and apoptosis. RPs also regulate cellular functions through p53-independent mechanisms. We herein review the recent advances in several forefronts of RP research, including the understanding of their biological features and roles in regulating cellular functions, maintaining cell homeostasis, and their involvement in the pathogenesis of human diseases. We also highlight the translational potential of this research for the identification of molecular biomarkers, and in the discovery and development of novel treatments for human diseases.
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Affiliation(s)
- Wei Wang
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas, 79106; Cancer Biology Center, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, Texas, 79106
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Sidhu PS, Teske K, Feleke B, Yuan NY, Guthrie ML, Fernstrum GB, Vyas ND, Han L, Preston J, Bogart JW, Silvaggi NR, Cook JM, Singh RK, Bikle DD, Arnold LA. Anticancer activity of VDR-coregulator inhibitor PS121912. Cancer Chemother Pharmacol 2014; 74:787-98. [PMID: 25107568 DOI: 10.1007/s00280-014-2549-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 07/25/2014] [Indexed: 12/13/2022]
Abstract
PURPOSE PS121912 has been developed as selective vitamin D receptor (VDR)-coregulator inhibitor starting from a high throughput screening campaign to identify new agents that modulate VDR without causing hypercalcemia. Initial antiproliferative effects of PS121912 were observed that are characterized herein to enable future in vivo investigation with this molecule. METHODS Antiproliferation and apoptosis were determined using four different cancer cell lines (DU145, Caco2, HL-60 and SKOV3) in the presence of PS121912, 1,25-(OH)₂D₃, or a combination of 1,25-(OH)₂D₃ and PS121912. VDR si-RNA was used to identify the role of VDR during this process. The application of ChIP enabled us to determine the involvement of coregulator recruitment during transcription, which was investigated by RT-PCR with VDR target genes and those affiliated with cell cycle progression. Translational changes of apoptotic proteins were determined with an antibody array. The preclinical characterization of PS121912 includes the determination of metabolic stability and CYP3A4 inhibition. RESULTS PS121912 induced apoptosis in all four cancer cells, with HL-60 cells being the most sensitive. At sub-micromolar concentrations, PS121912 amplified the growth inhibition of cancer cells caused by 1,25-(OH)₂D₃ without being antiproliferative by itself. A knockout study with VDR si-RNA confirmed the mediating role of VDR. VDR target genes induced by 1,25-(OH)₂D₃ were down-regulated with the co-treatment of PS121912. This process was highly dependent on the recruitment of coregulators that in case of CYP24A1 was SRC2. The combination of PS121912 and 1,25-(OH)₂D₃ reduced the presence of SRC2 and enriched the occupancy of corepressor NCoR at the promoter site. E2F transcription factors 1 and 4 were down-regulated in the presence of PS121912 and 1,25-(OH)₂D₃ that in turn reduced the transcription levels of cyclin A and D, thus arresting HL-60 cells in the S or G2/M phase. In addition, proteins with hematopoietic functions such as cyclin-dependent kinase 6, histone deacetylase 9 and transforming growth factor beta 2 and 3 were down-regulated as well. Elevated levels of P21 and GADD45, in concert with cyclin D1, also mediated the antiproliferative response of HL-60 in the presence of 1,25-(OH)₂D₃ and PS121912. Studies at higher concentration of P121912 identified a VDR-independent pathway of antiproliferation that included the enzymatic and transcriptional activation of caspase 3/7. CONCLUSION Overall, we conclude that PS121912 behaves like a VDR antagonist at low concentrations but interacts with more targets at higher concentrations leading to apoptosis mediated by caspase 3/7 activation. In addition, PS121912 showed an acceptable metabolic stability to enable in vivo cancer studies.
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Affiliation(s)
- Preetpal S Sidhu
- Department of Chemistry and Biochemistry, University of Wisconsin-Milwaukee, Milwaukee, WI, 53211, USA
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Al-Furoukh N, Kardon JR, Krüger M, Szibor M, Baker TA, Braun T. NOA1, a novel ClpXP substrate, takes an unexpected nuclear detour prior to mitochondrial import. PLoS One 2014; 9:e103141. [PMID: 25072814 PMCID: PMC4114565 DOI: 10.1371/journal.pone.0103141] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/26/2014] [Indexed: 11/25/2022] Open
Abstract
The mitochondrial matrix GTPase NOA1 is a nuclear encoded protein, essential for mitochondrial protein synthesis, oxidative phosphorylation and ATP production. Here, we demonstrate that newly translated NOA1 protein is imported into the nucleus, where it localizes to the nucleolus and interacts with UBF1 before nuclear export and import into mitochondria. Mutation of the nuclear localization signal (NLS) prevented both nuclear and mitochondrial import while deletion of the N-terminal mitochondrial targeting sequence (MTS) or the C-terminal RNA binding domain of NOA1 impaired mitochondrial import. Absence of the MTS resulted in accumulation of NOA1 in the nucleus and increased caspase-dependent apoptosis. We also found that export of NOA1 from the nucleus requires a leptomycin-B sensitive, Crm1-dependent nuclear export signal (NES). Finally, we show that NOA1 is a new substrate of the mitochondrial matrix protease complex ClpXP. Our results uncovered an unexpected, mandatory detour of NOA1 through the nucleolus before uptake into mitochondria. We propose that nucleo-mitochondrial translocation of proteins is more widespread than previously anticipated providing additional means to control protein bioavailability as well as cellular communication between both compartments.
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Affiliation(s)
- Natalie Al-Furoukh
- Department of Cardiac Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Julia R. Kardon
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Boston, Massachusetts, United States of America
| | - Marcus Krüger
- Department of Cardiac Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Marten Szibor
- Department of Cardiac Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Tania A. Baker
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Boston, Massachusetts, United States of America
| | - Thomas Braun
- Department of Cardiac Development and Remodeling, Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
- * E-mail:
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Zhou Y, Zhang X, Klibanski A. Genetic and epigenetic mutations of tumor suppressive genes in sporadic pituitary adenoma. Mol Cell Endocrinol 2014; 386:16-33. [PMID: 24035864 PMCID: PMC3943596 DOI: 10.1016/j.mce.2013.09.006] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 09/03/2013] [Indexed: 12/28/2022]
Abstract
Human pituitary adenomas are the most common intracranial neoplasms. Approximately 5% of them are familial adenomas. Patients with familial tumors carry germline mutations in predisposition genes, including AIP, MEN1 and PRKAR1A. These mutations are extremely rare in sporadic pituitary adenomas, which therefore are caused by different mechanisms. Multiple tumor suppressive genes linked to sporadic tumors have been identified. Their inactivation is caused by epigenetic mechanisms, mainly promoter hypermethylation, and can be placed into two groups based on their functional interaction with tumor suppressors RB or p53. The RB group includes CDKN2A, CDKN2B, CDKN2C, RB1, BMP4, CDH1, CDH13, GADD45B and GADD45G; AIP and MEN1 genes also belong to this group. The p53 group includes MEG3, MGMT, PLAGL1, RASSF1, RASSF3 and SOCS1. We propose that the tumor suppression function of these genes is mainly mediated by the RB and p53 pathways. We also discuss possible tumor suppression mechanisms for individual genes.
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Affiliation(s)
- Yunli Zhou
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Xun Zhang
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States
| | - Anne Klibanski
- Neuroendocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, United States.
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Ran Q, Hao P, Xiao Y, Xiang L, Ye X, Deng X, Zhao J, Li Z. CRIF1 interacting with CDK2 regulates bone marrow microenvironment-induced G0/G1 arrest of leukemia cells. PLoS One 2014; 9:e85328. [PMID: 24520316 PMCID: PMC3919709 DOI: 10.1371/journal.pone.0085328] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 11/26/2013] [Indexed: 01/10/2023] Open
Abstract
Background To assess the level of CR6-interacting factor 1 (CRIF1), a cell cycle negative regulator, in patients with leukemia and investigate the role of CRIF1 in regulating leukemia cell cycle. Methods We compared the CRIF1 level in bone marrow (BM) samples from healthy and acute myeloid leukemia (AML), iron deficiency anemia (IDA) and AML-complete remission (AML-CR) subjects. We also manipulated CRIF1 level in the Jurkat cells using lentivirus-mediated overexpression or siRNA-mediated depletion. Co-culture with the BM stromal cells (BMSCs) was used to induce leukemia cell cycle arrest and mimic the BM microenvironment. Results We found significant decreases of CRIF1 mRNA and protein in the AML group. CRIF1 overexpression increased the proportion of Jurkat cells arrested in G0/G1, while depletion of endogenous CRIF1 decreased cell cycle arrest. Depletion of CRIF1 reversed BMSCs induced cell cycle arrest in leukemia cells. Co-immunoprecipitation showed a specific binding of CDK2 to CRIF1 in Jurkat cells during cell cycle arrest. Co-localization of two proteins in both nucleus and cytoplasm was also observed with immunofluorescent staining. Conclusion CRIF1 may play a regulatory role in the BM microenvironment-induced leukemia cell cycle arrest possibly through interacting with CDK2 and acting as a cyclin-dependent kinase inhibitor.
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Affiliation(s)
- Qian Ran
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Ping Hao
- Oncologic Center, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Yanni Xiao
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Lixing Xiang
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Xingde Ye
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Xiaojun Deng
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Jiang Zhao
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
| | - Zhongjun Li
- Department of Blood Transfusion, The Second Affiliated Hospital, Third Military Medical University, Chongqing, China
- * E-mail:
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Tan JA, Bai S, Grossman G, Titus MA, Harris Ford O, Pop EA, Smith GJ, Mohler JL, Wilson EM, French FS. Mechanism of androgen receptor corepression by CKβBP2/CRIF1, a multifunctional transcription factor coregulator expressed in prostate cancer. Mol Cell Endocrinol 2014; 382:302-313. [PMID: 24103312 PMCID: PMC3880566 DOI: 10.1016/j.mce.2013.09.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Accepted: 09/27/2013] [Indexed: 01/12/2023]
Abstract
The transcription factor coregulator Casein kinase IIβ-binding protein 2 or CR6-interacting factor 1 (CKβBP2/CRIF1) binds the androgen receptor (AR) in prostate cancer cells and in response to dihydrotestosterone localizes with AR on the prostate-specific antigen gene enhancer, but does not bind DNA suggesting CKβBP2/CRIF1 localization in chromatin is determined by AR. In this study we show also that CKβBP2/CRIF1 inhibits wild-type AR and AR N-terminal transcriptional activity, binds to the AR C-terminal region, inhibits interaction of the AR N- and C-terminal domains (N/C interaction) and competes with p160 coactivator binding to the AR C-terminal domain, suggesting CKβBP2/CRIF1 interferes with AR activation functions 1 and 2. CKβBP2/CRIF1 is expressed mainly in stromal cells of benign prostatic hyperplasia and in stroma and epithelium of prostate cancer. CKβBP2/CRIF1 protein is increased in epithelium of androgen-dependent prostate cancer compared to benign prostatic hyperplasia and decreased slightly in castration recurrent epithelium compared to androgen-dependent prostate cancer. The multifunctional CKβBP2/CRIF1 is a STAT3 interacting protein and reported to be a coactivator of STAT3. CKβBP2/CRIF1 is expressed with STAT3 in prostate cancer where STAT3 may help to offset the AR repressor effect of CKβBP2/CRIF1 and allow AR regulation of prostate cancer growth.
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Affiliation(s)
- Jiann-An Tan
- Laboratories for Reproductive Biology, Department of Pediatrics, University of North Carolina, School of Medicine, Chapel Hill, NC, United States
| | - Suxia Bai
- Laboratories for Reproductive Biology, Department of Pediatrics, University of North Carolina, School of Medicine, Chapel Hill, NC, United States
| | - Gail Grossman
- Laboratories for Reproductive Biology, Department of Pediatrics, University of North Carolina, School of Medicine, Chapel Hill, NC, United States
| | - Mark A Titus
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY, United States
| | - O Harris Ford
- Lineberger Comprehensive Cancer Center, University of North Carolina, School of Medicine, Chapel Hill, NC, United States
| | - Elena A Pop
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY, United States
| | - Gary J Smith
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY, United States
| | - James L Mohler
- Department of Urology, Roswell Park Cancer Institute, Buffalo, NY, United States; Lineberger Comprehensive Cancer Center, University of North Carolina, School of Medicine, Chapel Hill, NC, United States; Department of Urology, University of Buffalo, School of Medicine and Biotechnology, Buffalo, NY, United States
| | - Elizabeth M Wilson
- Laboratories for Reproductive Biology, Department of Pediatrics, University of North Carolina, School of Medicine, Chapel Hill, NC, United States; Lineberger Comprehensive Cancer Center, University of North Carolina, School of Medicine, Chapel Hill, NC, United States; Department of Biochemistry and Biophysics, University of North Carolina, School of Medicine, Chapel Hill, NC, United States
| | - Frank S French
- Laboratories for Reproductive Biology, Department of Pediatrics, University of North Carolina, School of Medicine, Chapel Hill, NC, United States; Lineberger Comprehensive Cancer Center, University of North Carolina, School of Medicine, Chapel Hill, NC, United States.
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Koc EC, Cimen H, Kumcuoglu B, Abu N, Akpinar G, Haque ME, Spremulli LL, Koc H. Identification and characterization of CHCHD1, AURKAIP1, and CRIF1 as new members of the mammalian mitochondrial ribosome. Front Physiol 2013; 4:183. [PMID: 23908630 PMCID: PMC3726836 DOI: 10.3389/fphys.2013.00183] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 06/26/2013] [Indexed: 11/17/2022] Open
Abstract
Defects in mitochondrial ribosomal proteins (MRPs) cause various diseases in humans. Because of the essential role of MRPs in synthesizing the essential subunits of oxidative phosphorylation (OXPHOS) complexes, identifying all of the protein components involved in the mitochondrial translational machinery is critical. Initially, we identified 79 MRPs; however, identifying MRPs with no clear homologs in bacteria and yeast mitochondria was challenging, due to limited availability of expressed sequence tags (ESTs) in the databases available at that time. With the improvement in genome sequencing and increased sensitivity of mass spectrometry (MS)-based technologies, we have established four previously known proteins as MRPs and have confirmed the identification of ICT1 (MRP58) as a ribosomal protein. The newly identified MRPs are MRPS37 (Coiled-coil-helix-coiled-coil-helix domain containing protein 1-CHCHD1), MRPS38 (Aurora kinase A interacting protein1, AURKAIP1), MRPS39 (Pentatricopeptide repeat-containing protein 3, PTCD3), in the small subunit and MRPL59 (CR-6 interacting factor 1, CRIF1) in the large subunit. Furthermore, we have demonstrated the essential roles of CHCHD1, AURKAIP1, and CRIF1in mitochondrial protein synthesis by siRNA knock-down studies, which had significant effects on the expression of mitochondrially encoded proteins.
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Affiliation(s)
- Emine C Koc
- Department of Biochemistry and Microbiology, Joan C. Edwards School of Medicine, Marshall University Huntington, WV, USA
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Impact of natural genetic variation on gene expression dynamics. PLoS Genet 2013; 9:e1003514. [PMID: 23754949 PMCID: PMC3674999 DOI: 10.1371/journal.pgen.1003514] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Accepted: 04/04/2013] [Indexed: 01/03/2023] Open
Abstract
DNA sequence variation causes changes in gene expression, which in turn has profound effects on cellular states. These variations affect tissue development and may ultimately lead to pathological phenotypes. A genetic locus containing a sequence variation that affects gene expression is called an “expression quantitative trait locus” (eQTL). Whereas the impact of cellular context on expression levels in general is well established, a lot less is known about the cell-state specificity of eQTL. Previous studies differed with respect to how “dynamic eQTL” were defined. Here, we propose a unified framework distinguishing static, conditional and dynamic eQTL and suggest strategies for mapping these eQTL classes. Further, we introduce a new approach to simultaneously infer eQTL from different cell types. By using murine mRNA expression data from four stages of hematopoiesis and 14 related cellular traits, we demonstrate that static, conditional and dynamic eQTL, although derived from the same expression data, represent functionally distinct types of eQTL. While static eQTL affect generic cellular processes, non-static eQTL are more often involved in hematopoiesis and immune response. Our analysis revealed substantial effects of individual genetic variation on cell type-specific expression regulation. Among a total number of 3,941 eQTL we detected 2,729 static eQTL, 1,187 eQTL were conditionally active in one or several cell types, and 70 eQTL affected expression changes during cell type transitions. We also found evidence for feedback control mechanisms reverting the effect of an eQTL specifically in certain cell types. Loci correlated with hematological traits were enriched for conditional eQTL, thus, demonstrating the importance of conditional eQTL for understanding molecular mechanisms underlying physiological trait variation. The classification proposed here has the potential to streamline and unify future analysis of conditional and dynamic eQTL as well as many other kinds of QTL data. Complex physiological traits are affected through subtle changes of molecular traits like gene expression in the relevant tissues, which in turn are caused by genetic variation. A genetic locus containing a sequence variation affecting gene expression is called an expression quantitative trait locus (eQTL). Understanding the tissue and cell type specificity of eQTL effects is essential for revealing the molecular mechanisms underlying disease phenotypes. However, so far the cell-state dependence of eQTL is poorly understood. In order to systematically assess the importance of cell state-specific eQTL, we propose to distinguish static, conditional and dynamic eQTL and suggest strategies for mapping these eQTL classes. We applied our framework to mouse gene expression data from four hematopoietic stages and related cellular traits. The different eQTL classes, although derived from the same expression data, represent functionally distinct types of eQTL. Importantly, conditional eQTL are well correlated with relevant hematological traits. These findings emphasize the condition specificity of many regulatory relationships, even if the conditions under study are related. This calls for due caution when transferring conclusions about regulatory mechanisms across cell types or tissues. The proposed classification will also help to unravel dynamic behaviors in many other kinds of QTL data.
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Johnen H, González-Silva L, Carramolino L, Flores JM, Torres M, Salvador JM. Gadd45g is essential for primary sex determination, male fertility and testis development. PLoS One 2013; 8:e58751. [PMID: 23516551 PMCID: PMC3596291 DOI: 10.1371/journal.pone.0058751] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 02/05/2013] [Indexed: 11/18/2022] Open
Abstract
In humans and most mammals, differentiation of the embryonic gonad into ovaries or testes is controlled by the Y-linked gene SRY. Here we show a role for the Gadd45g protein in this primary sex differentiation. We characterized mice deficient in Gadd45a, Gadd45b and Gadd45g, as well as double-knockout mice for Gadd45ab, Gadd45ag and Gadd45bg, and found a specific role for Gadd45g in male fertility and testis development. Gadd45g-deficient XY mice on a mixed 129/C57BL/6 background showed varying degrees of disorders of sexual development (DSD), ranging from male infertility to an intersex phenotype or complete gonadal dysgenesis (CGD). On a pure C57BL/6 (B6) background, all Gadd45g(-/-) XY mice were born as completely sex-reversed XY-females, whereas lack of Gadd45a and/or Gadd45b did not affect primary sex determination or testis development. Gadd45g expression was similar in female and male embryonic gonads, and peaked around the time of sex differentiation at 11.5 days post-coitum (dpc). The molecular cause of the sex reversal was the failure of Gadd45g(-/-) XY gonads to achieve the SRY expression threshold necessary for testes differentiation, resulting in ovary and Müllerian duct development. These results identify Gadd45g as a candidate gene for male infertility and 46,XY sex reversal in humans.
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Affiliation(s)
- Heiko Johnen
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain
| | - Laura González-Silva
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain
| | - Laura Carramolino
- Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Juana Maria Flores
- Animal Surgery and Medicine Department, Veterinary School, Universidad Complutense de Madrid, Madrid, Spain
| | - Miguel Torres
- Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Jesús M. Salvador
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/Consejo Superior de Investigaciones Científicas, Campus Cantoblanco, Madrid, Spain
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Tadi S, Kim SJ, Ryu MJ, Park T, Jeong JS, Kim YH, Kweon GR, Shong M, Yim YH. Metabolic Rebalancing of CR6 Interaction Factor 1-Deficient Mouse Embryonic Fibroblasts: A Mass Spectrometry-Based Metabolic Analysis. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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45
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Shin J, Lee SH, Kwon MC, Yang DK, Seo HR, Kim J, Kim YY, Im SK, Abel ED, Kim KT, Park WJ, Kong YY. Cardiomyocyte specific deletion of Crif1 causes mitochondrial cardiomyopathy in mice. PLoS One 2013; 8:e53577. [PMID: 23308255 PMCID: PMC3537664 DOI: 10.1371/journal.pone.0053577] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 12/03/2012] [Indexed: 11/25/2022] Open
Abstract
Mitochondria are key organelles dedicated to energy production. Crif1, which interacts with the large subunit of the mitochondrial ribosome, is indispensable for the mitochondrial translation and membrane insertion of respiratory subunits. To explore the physiological function of Crif1 in the heart, Crif1(f/f) mice were crossed with Myh6-cre/Esr1 transgenic mice, which harbor cardiomyocyte-specific Cre activity in a tamoxifen-dependent manner. The tamoxifen injections were given at six weeks postnatal, and the mutant mice survived only five months due to hypertrophic heart failure. In the mutant cardiac muscles, mitochondrial mass dramatically increased, while the inner structure was altered with lack of cristae. Mutant cardiac muscles showed decreased rates of oxygen consumption and ATP production, suggesting that Crif1 plays a critical role in the maintenance of both mitochondrial structure and respiration in cardiac muscles.
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Affiliation(s)
- Juhee Shin
- Department of Biological Sciences, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk, Republic of Korea
| | - Seok Hong Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Dongjak-gu, Seoul, Republic of Korea
| | - Min-Chul Kwon
- Department of Biological Sciences, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
| | - Dong Kwon Yang
- Global Research Laboratory and Department of Life Science, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Ha-Rim Seo
- Department of Biological Sciences, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
| | - Jaetaek Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, Chung-Ang University, Dongjak-gu, Seoul, Republic of Korea
| | - Yoon-Young Kim
- Department of Biological Sciences, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk, Republic of Korea
| | - Sun-Kyoung Im
- Department of Biological Sciences, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk, Republic of Korea
| | - Evan Dale Abel
- Program in Molecular Medicine, University of Utah School of Medicine, Salt Lake City, Utah, United States of America
| | - Kyong-Tai Kim
- Department of Life Sciences, Pohang University of Science and Technology, Pohang, Kyungbuk, Republic of Korea
| | - Woo Jin Park
- Global Research Laboratory and Department of Life Science, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea
| | - Young-Yun Kong
- Department of Biological Sciences, Seoul National University, Gwanak-gu, Seoul, Republic of Korea
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46
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Kim SJ, Kwon MC, Ryu MJ, Chung HK, Tadi S, Kim YK, Kim JM, Lee SH, Park JH, Kweon GR, Ryu SW, Jo YS, Lee CH, Hatakeyama H, Goto YI, Yim YH, Chung J, Kong YY, Shong M. CRIF1 is essential for the synthesis and insertion of oxidative phosphorylation polypeptides in the mammalian mitochondrial membrane. Cell Metab 2012; 16:274-83. [PMID: 22819524 DOI: 10.1016/j.cmet.2012.06.012] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 02/10/2012] [Accepted: 06/22/2012] [Indexed: 11/27/2022]
Abstract
Although substantial progress has been made in understanding the mechanisms underlying the expression of mtDNA-encoded polypeptides, the regulatory factors involved in mitoribosome-mediated synthesis and simultaneous insertion of mitochondrial oxidative phosphorylation (OXPHOS) polypeptides into the inner membrane of mitochondria are still unclear. In the present study, disruption of the mouse Crif1 gene, which encodes a mitochondrial protein, resulted in a profound deficiency in OXPHOS caused by the disappearance of OXPHOS subunits and complexes in vivo. CRIF1 was associated with large mitoribosomal subunits that were located close to the polypeptide exit tunnel, and the elimination of CRIF1 led to both aberrant synthesis and defective insertion of mtDNA-encoded nascent OXPHOS polypeptides into the inner membrane. CRIF1 interacted with nascent OXPHOS polypeptides and molecular chaperones, e.g., Tid1. Taken together, these results suggest that CRIF1 plays a critical role in the integration of OXPHOS polypeptides into the mitochondrial membrane in mammals.
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Affiliation(s)
- Soung Jung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, Korea
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47
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Tamura RE, de Vasconcellos JF, Sarkar D, Libermann TA, Fisher PB, Zerbini LF. GADD45 proteins: central players in tumorigenesis. Curr Mol Med 2012; 12:634-51. [PMID: 22515981 PMCID: PMC3797964 DOI: 10.2174/156652412800619978] [Citation(s) in RCA: 236] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 11/23/2011] [Accepted: 12/15/2011] [Indexed: 12/18/2022]
Abstract
The Growth Arrest and DNA Damage-inducible 45 (GADD45) proteins have been implicated in regulation of many cellular functions including DNA repair, cell cycle control, senescence and genotoxic stress. However, the pro-apoptotic activities have also positioned GADD45 as an essential player in oncogenesis. Emerging functional evidence implies that GADD45 proteins serve as tumor suppressors in response to diverse stimuli, connecting multiple cell signaling modules. Defects in the GADD45 pathway can be related to the initiation and progression of malignancies. Moreover, induction of GADD45 expression is an essential step for mediating anti-cancer activity of multiple chemotherapeutic drugs and the absence of GADD45 might abrogate their effects in cancer cells. In this review, we present a comprehensive discussion of the functions of GADD45 proteins, linking their regulation to effectors of cell cycle arrest, DNA repair and apoptosis. The ramifications regarding their roles as essential and central players in tumor growth suppression are also examined. We also extensively review recent literature to clarify how different chemotherapeutic drugs induce GADD45 gene expression and how its up-regulation and interaction with different molecular partners may benefit cancer chemotherapy and facilitate novel drug discovery.
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Affiliation(s)
- Rodrigo Esaki Tamura
- International Centre for Genetic Engineering and Biotechnology, and Medical Biochemistry Division, University of Cape Town, Cape Town, South Africa
| | - Jaíra Ferreira de Vasconcellos
- Centro Infantil Boldrini, Molecular Biology Laboratory, Campinas, Brazil
- State University of Campinas, Faculty of Medical Sciences, Department of Medical Genetics, Campinas, Brazil
| | - Devanand Sarkar
- Department of Human and Molecular Genetics, VCU Institute of Molecular Medicine, VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA
| | - Towia A Libermann
- BIDMC Genomics and Proteomics Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | - Paul B Fisher
- Department of Human and Molecular Genetics, VCU Institute of Molecular Medicine, VCU Massey Cancer Center, Virginia Commonwealth University, School of Medicine, Richmond, VA
| | - Luiz Fernando Zerbini
- International Centre for Genetic Engineering and Biotechnology, and Medical Biochemistry Division, University of Cape Town, Cape Town, South Africa
- BIDMC Genomics and Proteomics Center, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
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48
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He J, Cooper HM, Reyes A, Di Re M, Sembongi H, Litwin TR, Gao J, Neuman KC, Fearnley IM, Spinazzola A, Walker JE, Holt IJ. Mitochondrial nucleoid interacting proteins support mitochondrial protein synthesis. Nucleic Acids Res 2012; 40:6109-21. [PMID: 22453275 PMCID: PMC3401451 DOI: 10.1093/nar/gks266] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Mitochondrial ribosomes and translation factors co-purify with mitochondrial nucleoids of human cells, based on affinity protein purification of tagged mitochondrial DNA binding proteins. Among the most frequently identified proteins were ATAD3 and prohibitin, which have been identified previously as nucleoid components, using a variety of methods. Both proteins are demonstrated to be required for mitochondrial protein synthesis in human cultured cells, and the major binding partner of ATAD3 is the mitochondrial ribosome. Altered ATAD3 expression also perturbs mtDNA maintenance and replication. These findings suggest an intimate association between nucleoids and the machinery of protein synthesis in mitochondria. ATAD3 and prohibitin are tightly associated with the mitochondrial membranes and so we propose that they support nucleic acid complexes at the inner membrane of the mitochondrion.
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Affiliation(s)
- J He
- MRC-Mitochondrial Biology Unit, Wellcome Trust-MRC Building, Hills Road Cambridge, CB2 0XY, UK
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49
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Zhang X, Ran Q, Li Z, Liu Y, Liang X, Chen X. Cell cycle arrest of Jurkat cells by leukemic bone marrow stromal cells: possible mechanisms and involvement of CRIF1. Transplant Proc 2012; 43:2770-3. [PMID: 21911160 DOI: 10.1016/j.transproceed.2011.05.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 02/06/2011] [Accepted: 05/24/2011] [Indexed: 11/17/2022]
Abstract
Bone marrow hemopoietic microenvironment plays an important role in the incidence and development of leukemia. Studies using normal bone marrow stromal cells (BMSCs) and an established stromal cell line, have shown that the leukemic cell cycle can be arrested in the G0/G1 phase in BMSCs, although the mechanism is still unclear. We performed this study to determine the effect of primary cultured leukemic BMSCs on the cell cycle distribution of Jurkat cells. Normal and leukemic BMSCs were isolated for culture to create a hematopoietic microenvironment simulating bone marrow in vitro. The normal and leukemic BMSCs induced cell cycle arrest of Jurkat cells in the G0/G1 phase. Suppression subtractive hybridization revealed differential gene expression after the co-culture of cells with normal and leukemic BMSCs. Jurkat cells showed upregulated expression of genes involved in cell cycle control CR6 interacting factor 1 (CRIF1). Reverse transcriptase polymerase chain reaction results also showed increased CRIF1 mRNA levels in Jurkat cells co-cultured with either normal BMSCs or leukemic BMSCs compared with a suspension culture group: 5.16 ± 0.75, 6.13 ± 0.63 versus 3.02 ± 0.32, respectively (P < .05). These results indicated cell cycle arrest of Jurkat cells in the G0/G1 phase to be induced by primary cultured leukemic BMSCs associated with increased expression of CRIF1 by leukemic cells.
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Affiliation(s)
- X Zhang
- Department of Hematology, Xinqiao Affiliated Hospital of the Third Military Medical University of Chinese PLA, Chongqing, China
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50
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Zhang W, Fu S, Liu X, Zhao X, Zhang W, Peng W, Wu C, Li Y, Li X, Bartlam M, Zeng ZH, Zhan Q, Rao Z. Crystal structure of human Gadd45γ [corrected] reveals an active dimer. Protein Cell 2011; 2:814-26. [PMID: 22058036 PMCID: PMC4875293 DOI: 10.1007/s13238-011-1090-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Accepted: 09/19/2011] [Indexed: 01/07/2023] Open
Abstract
The human Gadd45 protein family plays critical roles in DNA repair, negative growth control, genomic stability, cell cycle checkpoints and apoptosis. Here we report the crystal structure of human Gadd45γ [corrected], revealing a unique dimer formed via a bundle of four parallel helices, involving the most conserved residues among the Gadd45 isoforms. Mutational analysis of human Gadd45γ [corrected] identified a conserved, highly acidic patch in the central region of the dimer for interaction with the proliferating cell nuclear antigen (PCNA), p21 and cdc2, suggesting that the parallel dimer is the active form for the interaction. Cellular assays indicate that: (1) dimerization of Gadd45γ [corrected] is necessary for apoptosis as well as growth inhibition, and that cell growth inhibition is caused by both cell cycle arrest and apoptosis; (2) a conserved and highly acidic patch on the dimer surface, including the important residues Glu87 and Asp89, is a putative interface for binding proteins related to the cell cycle, DNA repair and apoptosis. These results reveal the mechanism of self-association by Gadd45 proteins and the importance of this self-association for their biological function.
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Affiliation(s)
- Wenzheng Zhang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China ,Tianjin Key Laboratory of Protein Science, College of Life Sciences, Nankai University, Tianjin, 300071 China ,Laboratory of Structural Biology, Tsinghua University, Beijing, 100084 China
| | - Sheng Fu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Xuefeng Liu
- State Key Laboratory of Molecular Oncology, Cancer Institute, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021 China
| | - Xuelian Zhao
- State Key Laboratory of Molecular Oncology, Cancer Institute, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021 China
| | - Wenchi Zhang
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Wei Peng
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Congying Wu
- Laboratory of Structural Biology, Tsinghua University, Beijing, 100084 China
| | - Yuanyuan Li
- Laboratory of Structural Biology, Tsinghua University, Beijing, 100084 China
| | - Xuemei Li
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Mark Bartlam
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China ,Tianjin Key Laboratory of Protein Science, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Zong-Hao Zeng
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China
| | - Qimin Zhan
- State Key Laboratory of Molecular Oncology, Cancer Institute, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021 China
| | - Zihe Rao
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, 100101 China ,Tianjin Key Laboratory of Protein Science, College of Life Sciences, Nankai University, Tianjin, 300071 China ,Laboratory of Structural Biology, Tsinghua University, Beijing, 100084 China
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