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Zhan Y, Zhang Z, Yin A, Su X, Tang N, Chen Y, Zhang Z, Chen W, Wang J, Wang W. RBBP4: A novel diagnostic and prognostic biomarker for non-small-cell lung cancer correlated with autophagic cell death. Cancer Med 2024; 13:e70090. [PMID: 39109577 PMCID: PMC11304277 DOI: 10.1002/cam4.70090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 06/07/2024] [Accepted: 07/24/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Non-small-cell lung cancer (NSCLC) often presents at later stages, typically associated with poor prognosis. Autophagy genes play a role in the progression of tumors. This study investigated the clinical relevance, prognostic value, and biological significance of RBBP4 in NSCLC. METHODS We assessed RBBP4 expression using the GSE30219 and TCGA NSCLC datasets and NSCLC cells, exploring its links with clinical outcomes, tumor immunity, and autophagy genes through bioinformatics analysis after transcriptome sequencing of RBBP4-knockdown and control PC9 cells. We identified differentially expressed genes (DEGs) and conducted Gene Ontology, Kyoto Encyclopedia of Genes and Genomes pathway enrichment, and protein-protein interaction network analyses. The significance of autophagy-related DEGs was evaluated for diagnosis and prognosis using the GSE30219 dataset. Experiments both in vivo and in vitro explored the biological mechanisms behind RBBP4-mediated autophagic cell death in NSCLC. RESULTS RBBP4 overexpression in NSCLC correlates with a poorer prognosis. Eighteen types of immune cell were significantly enriched in cultures that had low RBBP4 expression compared high expression. DEGs associated with RBBP4 are enriched in autophagy pathways. Transcriptomic profiling of the PC9 cell line identified autophagy-related DEGs associated with RBBP4 that exhibited differential expression in NSCLC, suggesting prognostic applications. In vitro experiments demonstrated that RBBP4 knockdown induced autophagy and apoptosis in PC9 cells, promoting cell death, which was inhibited by 3-MA. In vivo, targeted siRNA against RBBP4 significantly reduced tumor development in PC9 cell-injected nude mice, elevating autophagy-related protein levels and inducing apoptosis and necrosis in tumor tissues. CONCLUSION In NSCLC, RBBP4 upregulation correlates with poor prognosis and altered immunity. Its knockdown induces autophagic cell death in NSCLC cells. These results indicate RBBP4 as a potential NSCLC diagnostic marker and its autophagy modulation as a prospective therapeutic target.
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Affiliation(s)
- Yajing Zhan
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical UniversityHangzhouZhejiangChina
| | - Zhiqian Zhang
- Department of Clinical Laboratory CenterShaoxing People's Hospital (Shaoxing Hospital)ShaoxingZhejiangChina
| | - Ankang Yin
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical UniversityHangzhouZhejiangChina
| | - Xiyang Su
- Department of Laboratory MedicineThe Second Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhouZhejiangChina
| | - Nan Tang
- Department of Clinical LaboratoryPeople's Hospital of Wangcheng District ChangshaChangshaHunanChina
| | - Yi Chen
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical UniversityHangzhouZhejiangChina
| | - Zebin Zhang
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical UniversityHangzhouZhejiangChina
| | - Wei Chen
- Institute of Clinical Medicine Research, Zhejiang Provincial People's Hospital, Hangzhou Medical CollegeHangzhouZhejiangChina
- Cancer Institute of Integrated Tradition Chinese and Western Medicine, Zhejiang Academy of Traditional Chinese MedicineTongde Hospital of Zhejiang ProvinceHangzhouZhejiangChina
| | - Juan Wang
- Department of Clinical Laboratory, Key Laboratory of Cancer Prevention and Therapy Combining Traditional Chinese and Western Medicine of Zhejiang Province, Zhejiang Academy of Traditional Chinese MedicineTongde Hospital of Zhejiang ProvinceHangzhouZhejiangChina
| | - Wei Wang
- School of Medical Technology and Information Engineering, Zhejiang Chinese Medical UniversityHangzhouZhejiangChina
- Department of Clinical Laboratory, Key Laboratory of Cancer Prevention and Therapy Combining Traditional Chinese and Western Medicine of Zhejiang Province, Zhejiang Academy of Traditional Chinese MedicineTongde Hospital of Zhejiang ProvinceHangzhouZhejiangChina
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Lee J, Bao X. Comparative Review on Cancer Pathology from Aberrant Histone Chaperone Activity. Int J Mol Sci 2024; 25:6403. [PMID: 38928110 PMCID: PMC11203986 DOI: 10.3390/ijms25126403] [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: 04/24/2024] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Histone chaperones are integral to chromatin dynamics, facilitating the assembly and disassembly of nucleosomes, thereby playing a crucial role in regulating gene expression and maintaining genomic stability. Moreover, they prevent aberrant histone interactions prior to chromatin assembly. Disruption in histone chaperone function may result in genomic instability, which is implicated in pathogenesis. This review aims to elucidate the role of histone chaperones in cancer pathologies and explore their potential as therapeutic targets. Histone chaperones have been found to be dysregulated in various cancers, with alterations in expression levels, mutations, or aberrant interactions leading to tumorigenesis and cancer progression. In addition, this review intends to highlight the molecular mechanisms of interactions between histone chaperones and oncogenic factors, underscoring their roles in cancer cell survival and proliferation. The dysregulation of histone chaperones is significantly correlated with cancer development, establishing them as active contributors to cancer pathology and viable targets for therapeutic intervention. This review advocates for continued research into histone chaperone-targeted therapies, which hold potential for precision medicine in oncology. Future advancements in understanding chaperone functions and interactions are anticipated to lead to novel cancer treatments, enhancing patient care and outcomes.
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Affiliation(s)
| | - Xiucong Bao
- School of Biomedical Sciences, Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China;
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Hao H, Lian Y, Ren C, Yang S, Zhao M, Bo T, Xu J, Wang W. RebL1 is required for macronuclear structure stability and gametogenesis in Tetrahymena thermophila. MARINE LIFE SCIENCE & TECHNOLOGY 2024; 6:183-197. [PMID: 38827131 PMCID: PMC11136921 DOI: 10.1007/s42995-024-00219-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 03/01/2024] [Indexed: 06/04/2024]
Abstract
Histone modification and nucleosome assembly play important roles in chromatin-related processes. Histone chaperones form different complexes and coordinate histone transportation and assembly. Various histone chaperone complexes have been identified in different organisms. The ciliate protozoa (ciliates) have various chromatin structures and different nuclear morphology. However, histone chaperone components and functions of different subunits remain unclear in ciliates. Tetrahymema thermophila contains a transcriptionally active macronucleus (MAC) and a transcriptionally inactive micronucleus (MIC) which exhibit multiple replication and various chromatin remodeling progresses during vegetative growth and sexual developmental stages. Here, we found histone chaperone RebL1 not only localized evenly in the transcriptionally active MAC but also dynamically changed in the MIC during vegetative growth and sexual developmental stages. REBL1 knockdown inhibited cellular proliferation. The macronuclear morphology became bigger in growing mutants. The abnormal macronuclear structure also occurred in the starvation stage. Furthermore, micronuclear meiosis was disturbed during sexual development, leading to a failure to generate new gametic nuclei. RebL1 potentially interacted with various factors involved in histone-modifying complexes and chromatin remodeling complexes in different developmental stages. REBL1 knockdown affected expression levels of the genes involved in chromatin organization and transcription. Taken together, RebL1 plays a vital role in maintaining macronuclear structure stability and gametogenesis in T. thermophila. Supplementary Information The online version contains supplementary material available at 10.1007/s42995-024-00219-z.
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Affiliation(s)
- Huijuan Hao
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
| | - Yinjie Lian
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
| | - Chenhui Ren
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
| | - Sitong Yang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
| | - Min Zhao
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
| | - Tao Bo
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
| | - Jing Xu
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
- School of Life Science, Shanxi University, Taiyuan, 030006 China
| | - Wei Wang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, 030006 China
- Shanxi Key Laboratory of Biotechnology, Taiyuan, 030006 China
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4
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Chen H, Zhang W, Luo S, Li Y, Zhu Q, Xia Y, Tan H, Bian Y, Li Y, Ma J, Chen W, Luo X, Zhu G. Lead exposure induces neuronal apoptosis via NFκB p65/RBBP4/Survivin signaling pathway. Toxicology 2023; 499:153654. [PMID: 37866543 DOI: 10.1016/j.tox.2023.153654] [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: 08/19/2023] [Revised: 10/08/2023] [Accepted: 10/19/2023] [Indexed: 10/24/2023]
Abstract
Lead (Pb), as a heavy metal that is easily exposed in daily life, can cause damage to various systems of body. Apoptosis is an autonomous cell death process regulated by genes in order to maintain the stability of internal environment, which plays an important role in the development of nervous system. RB binding protein 4 (RBBP4) is one of the core histone binding subunits and is closely related to the apoptosis process of nervous system cells. However, it is not known whether RBBP4 can regulate neuronal apoptosis in lead-exposed environments. We exposed PC12 cells to 0 μM (control group), 1 μM, and 100 μM PbAc for 24 h to obtain cell samples. The female rats ingested drinking water containing 0, 0.5 g/L, and 2.0 g/L PbAc from the first day of pregnancy to three weeks after delivery to obtain hippocampal tissue samples from mammary rats. The results of TUNEL showed that lead exposure promoted the onset of apoptosis in cells and hippocampus. The mRNA and protein levels of the apoptosis-related protein Survivin were significantly reduced in the lead-exposed group compared to the control group. In addition, we found that lead exposure reduces the mRNA and protein levels of RBBP4 in PC12 cells and hippocampus, and increases the mRNA and protein levels of NFκB p65. Moreover, inhibiting NFκB p65 can reverse the decrease in RBBP4 expression in the lead exposure model. Overexpression of RBBP4 increased Survivin expression and reduced apoptosis induced by lead exposure. This suggests that lead exposure induces apoptosis through the NFκB p65/RBBP4/Survivin signaling pathway.
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Affiliation(s)
- Hui Chen
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Wei Zhang
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Song Luo
- Department of Orthopaedic Surgery, Nanchang Hongdu Hospital of Traditional Chinese Medicine, Diezihu Avenue Honggutan District, Nanchang 330006, PR China
| | - Yanshu Li
- Jiangxi Center of Medical Device Testing, Nanchang 330029, PR China
| | - Qian Zhu
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Yongli Xia
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Hong Tan
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Ying Bian
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Yaobing Li
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Jianmin Ma
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Wei Chen
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Xietian Luo
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China
| | - Gaochun Zhu
- Department of Anatomy, School of Medicine, Nanchang University, BaYi Road 461, Nanchang 330006, PR China.
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5
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Zhuo FF, Guo Q, Zheng YZ, Liu TT, Yang Z, Xu QH, Jiang Y, Liu D, Tu PF, Zeng KW. Photoaffinity labeling-based chemoproteomic strategy reveals RBBP4 as a cellular target of protopanaxadiol against colorectal cancer cells. Chembiochem 2022; 23:e202200038. [PMID: 35442561 DOI: 10.1002/cbic.202200038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 04/19/2022] [Indexed: 12/09/2022]
Abstract
ABSTRCT Protopanaxadiol (PPD), a main ginseng metabolite, exerts powerful anticancer effects against multiple types of cancer; however, its cellular targets remain elusive. Here, we synthesized a cell-permeable PPD probe via introducing a bifunctional alkyne-containing diazirine photo-crosslinker and performed a photoaffinity labeling-based chemoproteomic study. We identified retinoblastoma binding protein 4 (RBBP4), a chromatin remodeling factor, as an essential cellular target of PPD in HCT116 colorectal cancer cells. PPD significantly decreased RBBP4-dependent trimethylation at lysine 27 of histone H3 (H3K27me3), a crucial epigenetic marker that correlates with histologic signs of colorectal cancer aggressiveness, and PPD inhibition of proliferation and migration of HCT116 cells was antagonized by RBBP4 RNA silencing. Collectively, our study highlights a previously undisclosed anti-colorectal cancer cellular target of the ginseng metabolite and advances the fundamental understanding of RBBP4 functions via a chemical biology strategy.
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Affiliation(s)
- Fang-Fang Zhuo
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Qiang Guo
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Yong-Zhe Zheng
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Ting-Ting Liu
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Zhuo Yang
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Qi-He Xu
- King's College London, Renal Science and Integrative Chinese Medicine Laboratory, Department of Inflammation Biology, School of Immunology and Microbial Sciences,, UNITED KINGDOM
| | - Yong Jiang
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Dan Liu
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Peng-Fei Tu
- Peking University Health Science Center, Laboratory of Natural and Biomimetic Drugs, CHINA
| | - Ke-Wu Zeng
- Peking University, School of Pharmaceutical Sciences, Xueyuan Road, 100191, Beijing, CHINA
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6
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Cao X, Li F, Shao J, Lv J, Chang A, Dong W, Zhu F. Circular RNA hsa_circ_0102231 sponges miR-145 to promote non-small cell lung cancer cell proliferation by up-regulating the expression of RBBP4. J Biochem 2021; 169:65-73. [PMID: 33084863 DOI: 10.1093/jb/mvaa093] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 07/25/2020] [Indexed: 01/14/2023] Open
Abstract
Circular RNAs (circRNAs) are important regulators in various cancers. Previous studies have found that hsa_circ_0102231 is an oncogene in lung adenocarcinoma. Here, we investigated its mechanism in the development of non-small cell lung cancer (NSCLC). We detected the levels of hsa_circ_0102231 in five NSCLC cell lines and one normal bronchial epithelium cell line. The interaction between hsa_circ_0102231 and miR-145 was predicted and confirmed by pull-down and luciferase assays. The nuclear mass separation assay and fluorescence in situ hybridization were used to detect the distribution of hsa_circ_0102231. Cell Counting Kit-8 and Transwell assays were used to assess the cell proliferative and invasive ability. Western blot and RT-qPCR, respectively, detected the protein and mRNA levels of RBBP4. The RBBP4 promoter activity was detected with a luciferase assay. We found that hsa_circ_0102231 level was higher in NSCLC cells. hsa_circ_0102231 is mainly localized to the cytoplasm. hsa_circ_0102231 promotes NSCLC cell proliferation and invasion by sponge for miR-145. miR-145 significantly decreases the RBBP4 promoter activity, and its mRNA and protein levels. RBBP4 is an oncogene to promote proliferation and invasion ability. Our findings suggest that hsa_circ_0102231 promotes proliferation and invasion by mediating the miR-145/RBBP4 axis in NSCLC, indicating that it might be a potential target for NSCLC treatment.
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Affiliation(s)
- Xueru Cao
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
| | - Fengzhen Li
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
| | - Jianping Shao
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
| | - Jianmei Lv
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
| | - Ailan Chang
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
| | - Weiping Dong
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
| | - Fulian Zhu
- Department of Respiratory Medicine, Heze Municipal Hospital, 2888 Caozhou Road, Heze, Shandong, 274000, People's Republic of China
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7
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Challenging, Accurate and Feasible: CAF-1 as a Tumour Proliferation Marker of Diagnostic and Prognostic Value. Cancers (Basel) 2021; 13:cancers13112575. [PMID: 34073937 PMCID: PMC8197349 DOI: 10.3390/cancers13112575] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 01/14/2023] Open
Abstract
Simple Summary There is an emerging need for new weapons in the battle against cancer; therefore, the discovery of new biomarkers with diagnostic, prognostic, and therapeutic value is a priority of current cancer research. An important task is to identify how quickly a tumour proliferates. A tumour’s proliferation rate is critical for grading and clinical decision-making; hence, there is an imperative need for accurate proliferation markers. Here, we review evidence demonstrating that chromatin assembly factor 1 (CAF-1) is a proliferation marker of clinical value. CAF-1 is selectively expressed in proliferating cells and its expression can be evaluated by immunohistochemistry in cytology smears and biopsies. CAF-1 expression is increased in almost all cancers and correlates strongly with the expression of Ki-67, the current routine proliferation marker. Overexpression of CAF-1 is associated with poor clinical outcome (advanced cancer stage, recurrence, metastasis, and decreased survival). CAF-1 is a robust, reproducible, and feasible proliferation marker of prognostic importance and may represent an attractive alternative or complementary to Ki-67 for cancer stratification and clinical guidance. Abstract The discovery of novel biomarkers of diagnostic, prognostic, and therapeutic value is a major challenge of current cancer research. The assessment of tumour cell proliferative capacity is pivotal for grading and clinical decision-making, highlighting the importance of proliferation markers as diagnostic and prognostic tools. Currently, the immunohistochemical analysis of Ki-67 expression levels is routinely used in clinical settings to assess tumour proliferation. Inasmuch as the function of Ki-67 is not fully understood and its evaluation lacks standardization, there is interest in chromatin regulator proteins as alternative proliferation markers of clinical value. Here, we review recent evidence demonstrating that chromatin assembly factor 1 (CAF-1), a histone chaperone selectively expressed in cycling cells, is a proliferation marker of clinical value. CAF-1 expression, when evaluated by immunocytochemistry in breast cancer cytology smears and immunohistochemistry in cancer biopsies from several tissues, strongly correlates with the expression of Ki-67 and other proliferation markers. Notably, CAF-1 expression is upregulated in almost all cancers, and CAF-1 overexpression is significantly associated, in most cancer types, with high histological tumour grade, advanced stage, recurrence, metastasis, and decreased patient survival. These findings suggest that CAF-1 is a robust, reproducible, and feasible proliferation marker of prognostic importance. CAF-1 may represent an attractive alternative or complementary to Ki-67 for cancer stratification and clinical guidance.
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Hart P', Hommen P, Noisier A, Krzyzanowski A, Schüler D, Porfetye AT, Akbarzadeh M, Vetter IR, Adihou H, Waldmann H. Structure Based Design of Bicyclic Peptide Inhibitors of RbAp48. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202009749] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Peter 't Hart
- Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Chemical Genomics Centre of the Max Planck Society Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Pascal Hommen
- Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
- Chemical Genomics Centre of the Max Planck Society Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Anaïs Noisier
- Medicinal Chemistry, Research and Early Development Cardiovascular Renal and Metabolism, BioPharmaceutical R&D AstraZeneca Gothenburg Sweden
| | - Adrian Krzyzanowski
- Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Darijan Schüler
- Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Arthur T. Porfetye
- Department of Mechanistic Cell Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Mohammad Akbarzadeh
- Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Ingrid R. Vetter
- Department of Mechanistic Cell Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Hélène Adihou
- Medicinal Chemistry, Research and Early Development Cardiovascular Renal and Metabolism, BioPharmaceutical R&D AstraZeneca Gothenburg Sweden
- AstraZeneca MPI Satellite Unit Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
| | - Herbert Waldmann
- Department of Chemical Biology Max Planck Institute of Molecular Physiology Otto-Hahn-Strasse 11 44227 Dortmund Germany
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Hart P', Hommen P, Noisier A, Krzyzanowski A, Schüler D, Porfetye AT, Akbarzadeh M, Vetter IR, Adihou H, Waldmann H. Structure Based Design of Bicyclic Peptide Inhibitors of RbAp48. Angew Chem Int Ed Engl 2021; 60:1813-1820. [PMID: 33022847 PMCID: PMC7894522 DOI: 10.1002/anie.202009749] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Indexed: 12/11/2022]
Abstract
The scaffolding protein RbAp48 is part of several epigenetic regulation complexes and is overexpressed in a variety of cancers. In order to develop tool compounds for the study of RbAp48 function, we have developed peptide inhibitors targeting the protein-protein interaction interface between RbAp48 and the scaffold protein MTA1. Based on a MTA1-derived linear peptide with low micromolar affinity and informed by crystallographic analysis, a bicyclic peptide was developed that inhibits the RbAp48/MTA1 interaction with a very low nanomolar KD value of 8.56 nM, and which showed appreciable stability against cellular proteases. Design included exchange of a polar amide cyclization strategy to hydrophobic aromatic linkers enabling mono- and bicyclization by means of cysteine alkylation, which improved affinity by direct interaction of the linkers with a hydrophobic residue on RbAp48. Our results demonstrate that stepwise evolution of a structure-based design is a suitable strategy for inhibitor development targeting PPIs.
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Affiliation(s)
- Peter 't Hart
- Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
- Chemical Genomics Centre of the Max Planck SocietyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Pascal Hommen
- Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
- Chemical Genomics Centre of the Max Planck SocietyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Anaïs Noisier
- Medicinal Chemistry, Research and Early Development CardiovascularRenal and Metabolism, BioPharmaceutical R&DAstraZenecaGothenburgSweden
| | - Adrian Krzyzanowski
- Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Darijan Schüler
- Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Arthur T. Porfetye
- Department of Mechanistic Cell BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Mohammad Akbarzadeh
- Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Ingrid R. Vetter
- Department of Mechanistic Cell BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Hélène Adihou
- Medicinal Chemistry, Research and Early Development CardiovascularRenal and Metabolism, BioPharmaceutical R&DAstraZenecaGothenburgSweden
- AstraZeneca MPI Satellite UnitDepartment of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
| | - Herbert Waldmann
- Department of Chemical BiologyMax Planck Institute of Molecular PhysiologyOtto-Hahn-Strasse 1144227DortmundGermany
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10
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Li YD, Lv Z, Zhu WF. RBBP4 promotes colon cancer malignant progression via regulating Wnt/β-catenin pathway. World J Gastroenterol 2020; 26:5328-5342. [PMID: 32994691 PMCID: PMC7504250 DOI: 10.3748/wjg.v26.i35.5328] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/07/2020] [Accepted: 08/25/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Our previous study demonstrated that RBBP4 was upregulated in colon cancer and correlated with poor prognosis of colon cancer and hepatic metastasis. However, the potential biological function of RBBP4 in colon cancer is still unknown.
AIM To investigate the biological role and the potential mechanisms of RBBP4 in colon cancer progression.
METHODS Real-time polymerase chain reaction and western blot analysis were used to detect the expression of RBBP4 in colon cancer cell lines. The cell proliferation and viability of SW620 and HCT116 cells with RBBP4 knockdown was detected by Cell Counting Kit-8 and 5-ethynyl-2’-deoxyuridine staining. The transwell assay was used to detect the invasion and migration capabilities of colon cancer cells with RBBP4 knockdown. Flow cytometry apoptosis assay was used to detect the apoptosis of colon cancer cells. Western blotting analysis was used to detect the expression of epithelial-mesenchymal transition and apoptosis related markers in colon cancer. The nuclear translocation of β-catenin was examined by Western blotting analysis in colon cancer cells with RBBP4 knockdown. The TOPFlash luciferase assay was used to detect the effect of RBBP4 on Wnt/β-catenin activation. The rescue experiments were performed in colon cancer cells treated with Wnt/β-catenin activator LiCl and RBBP4 knockdown.
RESULTS We found that RBBP4 was highly expressed in colon cancer cell lines. The 5-ethynyl-2’-deoxyuridine assay showed that knockdown of RBBP4 significantly inhibited cell proliferation. RBBP4 inhibition reduced cell invasion and migration via regulating proteins related to epithelial-mesenchymal transition. Knockdown of RBBP4 significantly inhibited survivin-mediated apoptosis. Mechanistically, the TOPFlash assay showed that RBBP4 knockdown increased activity of the Wnt/β-catenin pathway. Meanwhile, RBBP4 knockdown suppressed nuclear translocation of β-catenin. With Wnt/β-catenin activator, rescue experiments suggested that the role of RBBP4 in colon cancer progression was dependent on Wnt/β-catenin pathway.
CONCLUSION RBBP4 promotes colon cancer development via increasing activity of the Wnt/β-catenin pathway. RBBP4 may serve as a novel therapeutic target in colon cancer.
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Affiliation(s)
- Yan-Dong Li
- Division of Colon and Rectal Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
| | - Zhen Lv
- Department of Surgery, Division of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
| | - Wei-Fang Zhu
- Division of Dermatology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, Zhejiang Province, China
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11
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Park JH, Lee TK, Kim DW, Park CW, Park YE, Kim B, Lee JC, Lee HA, Won MH, Ahn JH. RbAp48 expression and neuronal damage in the gerbil hippocampus following 5 min of transient ischemia. Lab Anim Res 2020; 35:12. [PMID: 32257900 PMCID: PMC7081550 DOI: 10.1186/s42826-019-0011-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 07/14/2019] [Indexed: 11/10/2022] Open
Abstract
Histone-binding protein RbAp48 has been known to be involved in histone acetylation, and epigenetic alterations of histone modifications are closely associated with the pathogenesis of ischemic reperfusion injury. In the current study, we investigated chronological change of RbAp48 expression in the hippocampus following 5 min of transient ischemia in gerbils. RbAp48 expression was examined 1, 2, 5, and 10 days after transient ischemia using immunohistochemistry. In sham operated gerbils, RbAp48 immunoreactivity was strong in pyramidal and non-pyramidal cells in the hippocampus. After transient ischemia, RbAp48 immunoreactivity was changed in the cornu ammonis 1 subfield (CA1), not in CA2/3. RbAp48 immunoreactivity in CA1 pyramidal neurons was gradually decreased and not detected at 5 and 10 days after ischemia. RbAp48 immunoreactivity in non-pyramidal cells was maintained until 2 days post-ischemia and significantly increased from 5 days post-ischemia. Double immunohistofluorescence staining revealed that RbAp48 immunoreactive non-pyramidal cells were astrocytes. At 5 days post-ischemia, death of pyramidal neurons occurred only in the CA1. These results showed that RbAp48 immunoreactivity was distinctively altered in pyramidal neurons and astrocytes in the hippocampal CA1 following 5 mins of transient ischemia. Ischemia-induced change in RbAp48 expression may be closely associated with neuronal death and astrocyte activation following 5 min of transient ischemia.
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Affiliation(s)
- Joon Ha Park
- 1Department of Biomedical Science, Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, Gangwon 24252 Republic of Korea
| | - Tae-Kyeong Lee
- 2Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Dae Won Kim
- Department of Biochemistry and Molecular Biology, and Research Institute of Oral Sciences, College of Dentistry, Gangnung-Wonju National University, Gangneung, Gangwon 25457 Republic of Korea
| | - Cheol Woo Park
- 2Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Young Eun Park
- 2Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Bora Kim
- 2Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Jae-Chul Lee
- 2Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Hyang-Ah Lee
- 4Department of Obstetrics and Gynecology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Moo-Ho Won
- 2Department of Neurobiology, School of Medicine, Kangwon National University, Chuncheon, Gangwon 24341 Republic of Korea
| | - Ji Hyeon Ahn
- 1Department of Biomedical Science, Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, Gangwon 24252 Republic of Korea
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12
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Li YD, Lv Z, Xie HY, Zheng SS. Retinoblastoma binding protein 4 up-regulation is correlated with hepatic metastasis and poor prognosis in colon cancer patients. Hepatobiliary Pancreat Dis Int 2019; 18:446-451. [PMID: 31501018 DOI: 10.1016/j.hbpd.2019.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Accepted: 08/20/2019] [Indexed: 02/05/2023]
Abstract
BACKGROUND Retinoblastoma binding protein 4 (RBBP4) plays an essential role in the development of multiple cancers. However, its relationship with prognosis in colon cancer and colon cancer hepatic metastasis has not been elucidated. The aim of this study was to explore the relationship between RBBP4 expression and prognosis of colon cancer patients and to evaluate RBBP4 as a new prognostic marker in these patients. METHODS Eighty colon cancer patients underwent surgical resection of the colon were enrolled. Among them, forty colon cancer patients suffered with hepatic metastasis. The colon cancer tissues, para-colon cancer tissues, and hepatic metastatic cancer tissues were collected from the pathological department for further analysis. The expression of RBBP4 proteins was examined by immunohistochemistry and correlated with clinicopathological parameters. The Cancer Genome Atlas (TCGA) database was used to validate the expression and explore its relationship with clinical characteristics. RESULTS RBBP4 was up-regulated in the colon cancer tissues compared with the para-colon cancer tissues. The analysis of TCGA database verified the upregulation of RBBP4 in the colon cancer tissues and RBBP4 overexpression was correlated with nerve invasion and poor outcomes of chemotherapy. Moreover, the positive rate of RBBP4 expression in 40 colon cancer patients with hepatic metastasis was higher in the hepatic metastatic cancer tissues (39/40, 97.5%) than in the colon cancer tissues (26/40, 65.0%). Our clinicopathological analysis showed that RBBP4 expression was significantly correlated with vascular invasion, hepatic metastasis, and lymph node involvement (all P < 0.05). Additionally, the survival analysis demonstrated that RBBP4 over-expression was correlated with poor prognosis. CONCLUSIONS RBBP4 was upregulated in the colon cancer. RBBP4 may be a novel predictor for poor prognosis of colon cancer and colon cancer hepatic metastasis.
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Affiliation(s)
- Yan-Dong Li
- Division of Colon & Rectal Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Zhen Lv
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Hai-Yang Xie
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Shu-Sen Zheng
- Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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Wang J, Yang Z, Cheng L, Lu L, Pan K, Yang J, Wu N. Retinoblastoma binding protein 4 represses HIV-1 long terminal repeat-mediated transcription by recruiting NR2F1 and histone deacetylase. Acta Biochim Biophys Sin (Shanghai) 2019; 51:934-944. [PMID: 31435636 DOI: 10.1093/abbs/gmz082] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Indexed: 01/22/2023] Open
Abstract
Human immunodeficiency virus (HIV) transcription is closely associated with chromatin remodeling. Retinoblastoma binding protein 4 (RBBP4) is a histone chaperone implicated in chromatin remodeling. However, the role of RBBP4 in HIV-1 infection and the underlying mechanism remain elusive. In the present study, we showed that RBBP4 plays a negative regulatory role during HIV-1 infection. RBBP4 expression was significantly increased in HIV-1-infected T cells. RBBP4 binds to the HIV-1 long terminal repeat (LTR), represses HIV-1 LTR-mediated transcription through recruiting nuclear receptor subfamily 2 group F member 1(NR2F1) and histone deacetylase 1 and 2 (HDAC1/2) to HIV-1 LTR, and further controls local histone 3 (H3) deacetylation and chromatin compaction. Furthermore, the occupancy of RBBP4, HDAC1/2, and NR2F1 on LTR in HIV-latent J-lat cells was significantly higher than that in HIV-1-activated cells. In conclusion, our results establish RBBP4 as a new potent antiretroviral factor, which may provide theoretical basis for the treatment of HIV in the future.
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Affiliation(s)
- Juan Wang
- Department of Clinical Laboratory, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Zongxing Yang
- The Second Department of Infectious Disease, Xixi Hospital of Hangzhou, Hangzhou, China
| | - Linfang Cheng
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
| | - Lingna Lu
- Department of Clinical Laboratory, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Kenv Pan
- Department of Clinical Laboratory, Xixi Hospital of Hangzhou, Hangzhou, China
| | - Jin Yang
- Center for Translational Medicine, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Nanping Wu
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, China
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14
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Li D, Song H, Mei H, Fang E, Wang X, Yang F, Li H, Chen Y, Huang K, Zheng L, Tong Q. Armadillo repeat containing 12 promotes neuroblastoma progression through interaction with retinoblastoma binding protein 4. Nat Commun 2018; 9:2829. [PMID: 30026490 PMCID: PMC6053364 DOI: 10.1038/s41467-018-05286-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 06/25/2018] [Indexed: 12/18/2022] Open
Abstract
Recent studies suggest the emerging roles of armadillo (ARM) family proteins in tumor progression. However, the functions and underlying mechanisms of ARM members in tumorigenesis and aggressiveness of neuroblastoma (NB) remain to be determined. Herein, we identify armadillo repeat containing 12 (ARMC12) as an ARM member associated with NB progression. ARMC12 promotes the growth and aggressiveness of NB cell lines. Mechanistically, ARMC12 physically interacts with retinoblastoma binding protein 4 (RBBP4) to facilitate the formation and activity of polycomb repressive complex 2, resulting in transcriptional repression of tumor suppressive genes. Blocking the interaction between ARMC12 and RBBP4 by cell-penetrating inhibitory peptide activates the downstream gene expression and suppresses the tumorigenesis and aggressiveness of NB cells. Both ARMC12 and RBBP4 are upregulated in NB tissues, and are associated with unfavorable outcome of patients. These findings suggest the crucial roles of ARMC12 in tumor progression and a potential therapeutic approach for NB. Armadillo (ARM) family proteins can act as oncogenes or tumor suppressors. Here, the authors show that a new ARM protein (ARMC12) is upregulated in neuroblastoma, binds the PRC2 component RBBP4, and inhibits transcription of tumor suppressive genes.
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Affiliation(s)
- Dan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Huajie Song
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Hong Mei
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Erhu Fang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Xiaojing Wang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Feng Yang
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Huanhuan Li
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Yajun Chen
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Kai Huang
- Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China
| | - Liduan Zheng
- Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China.
| | - Qiangsong Tong
- Department of Pediatric Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China. .,Clinical Center of Human Genomic Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022, Wuhan, Hubei Province, P.R. China.
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15
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Pacifico F, Lepore A, Mellone S, Sanguigno L, Federico G, Greco A, Brunetti A, Leonardi A. The chemokine scavenging receptor D6/ACKR2 is a target of miR-146a in thyroid cancer. Genes Cancer 2017; 8:577-588. [PMID: 28740576 PMCID: PMC5511891 DOI: 10.18632/genesandcancer.141] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
We have previously shown that miR-146a, a NF-κB-regulated microRNA, is strongly expressed in human specimens and cell lines derived from anaplastic thyroid carcinomas (ATC) where it mediates some of the NF-κB pro-tumorigenic functions. By using a bioinformatic analysis, we identified the chemokine scavenger receptor D6/ ACKR2 as a target of miR146a in human ATC. We found that the expression of D6/ ACKR2 was up-regulated in miR-146a-null ATC cell lines and that the 3’ UTR of D6/ ACKR2 mRNA was able to inhibit its expression in parental, but not in miR-146a-null ATC cells. Since human specimens from primary ATC showed a low expression of D6/ ACKR2 compared to normal thyroid tissues, we analyzed the effects of D6/ACKR2 over-expression in ATC cells. Different chemokines added to the conditioned medium of D6/ACKR2 over-expressing ATC cells partially failed to drive in vitro monocyte migration, and tumors derived from the injection of the same cells in nude mice showed a decreased number of infiltrating macrophages. Taken together, these results indicate that ATC cells down-regulate D6/ACKR2 expression through miR-146a activity to sustain leukocyte trafficking inside tumor microenvironment and shed light on a novel mechanism by which NF-κB indirectly inhibits the expression and the function of anti-tumorigenic gene in thyroid cancer.
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Affiliation(s)
| | - Alessio Lepore
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Federico II University, Naples, Italy
| | - Stefano Mellone
- Istituto di Endocrinologia e Oncologia Sperimentale, CNR, Naples, Italy
| | - Luca Sanguigno
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Federico II University, Naples, Italy
| | - Giorgia Federico
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Federico II University, Naples, Italy
| | - Adelaide Greco
- Dipartimento di Scienze Biomediche Avanzate, Federico II University, Naples, Italy.,CEINGE Biotecnologie Avanzate, scarl, Naples, Italy.,Istituto di Biostrutture e Bioimmagini, CNR, Naples, Italy
| | - Arturo Brunetti
- Dipartimento di Scienze Biomediche Avanzate, Federico II University, Naples, Italy.,CEINGE Biotecnologie Avanzate, scarl, Naples, Italy
| | - Antonio Leonardi
- Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Federico II University, Naples, Italy
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16
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Wang X, Yao F, Liang X, Zhu X, Zheng R, Jia B, Hou L, Zou X. Cloning and expression of retinoblastoma-binding protein 4 gene in embryo diapause termination and in response to salinity stress from brine shrimp Artemia sinica. Gene 2016; 591:351-61. [PMID: 27267406 DOI: 10.1016/j.gene.2016.06.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/17/2016] [Accepted: 06/03/2016] [Indexed: 11/30/2022]
Abstract
Retinoblastoma binding protein 4 (RBBP4) is a nuclear protein with four WD-repeat sequences and thus belongs to a highly conserved subfamily of proteins with such domains. This retinoblastoma-binding protein plays an important role in nucleosome assembly and histone modification, which influences gene transcription and regulates cell cycle and proliferation. Artemia sinica (brine shrimp) undergoes an unusual diapause process under stress conditions of high salinity and low temperature. However, the role of RBBP4 in diapause termination of embryo development in A. sinica remains unknown. Here, the full-length cDNA of the As-rbbp4 gene was obtained from A. sinica and found to contain 1411 nucleotides, including a 1281 bp open reading frame (ORF), 63 bp 5'-untranslated region (UTR) and a 67-bp 3'-UTR, which encodes a 427 amino acid (48 kDa) protein. Bioinformatic analysis indicated As-RBBP4 to be mainly located in the nucleus, with a theoretical isoelectric point of 4.79. Protein sequence domain analysis showed that As-RBBP4 is a conserved protein, especially in the WD40 domain. No specificity in expression of this gene was observed in tissues or organs by in situ hybridization. Real-time quantitative PCR and Western blot analyses of As-RBBP4 gene and protein expression, respectively, showed notably high levels at 10 h and a subsequent downward trend. Obvious trends in upregulation of As-RBBP4 were observed under conditions of low temperature and high salinity stress. As-E2F1 and As-CyclinE also presented similar trends as that of As-RBBP4 in Western blots. Analysis of the RBBP4 expression in early embryonic development of A. sinica indicated that this protein plays an important role in diapause termination and cell cycle regulation.
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Affiliation(s)
- Xiaolu Wang
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Feng Yao
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Xiaoyu Liang
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Xiaolin Zhu
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Ren Zheng
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Baolin Jia
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China
| | - Lin Hou
- College of Life Sciences, Liaoning Normal University, Dalian 116081, China.
| | - Xiangyang Zou
- Department of Biology, Dalian Medical University, Dalian 116044, China.
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17
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Bai X, Wang D, Ji H, Zheng L, Lu Y, Tang W, Zhang H, Xu W, Li J, Fei Z, Wang H. RbAp48 Is Critical for the Proliferation of Hypopharyngeal Carcinoma. ORL J Otorhinolaryngol Relat Spec 2015; 77:310-9. [DOI: 10.1159/000438761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Accepted: 07/14/2015] [Indexed: 11/19/2022]
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18
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Qi WL, Cao LL, Hu JJ, Xue JY, Sang TT, Zheng YJ, Chen T, Wang J, Zhao FK, Zhang SF. Involvement of RbAp48 in erythroid differentiation of murine erythroleukemia cells induced by sodium butyrate. Oncol Lett 2014; 7:1785-1789. [PMID: 24932233 PMCID: PMC4049757 DOI: 10.3892/ol.2014.2015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 02/18/2014] [Indexed: 11/22/2022] Open
Abstract
Normal mammalian terminal erythroid differentiation is a precisely regulated process during which the progenitor cells execute particular programs to form a mature erythrocytic phenotype. In the present study, it was found that RbAp48, a histone-binding protein associated with retinoblastoma protein, was upregulated during terminal erythroid maturation in vivo and in vitro. This indicated that RbAp48, at least in part, participated in the regulation of murine erythropoiesis. Following sodium butyrate (SB) induction, murine erythroleukemia (MEL) cells began to re-enter erythroid differentiation and the ratio of differentiated cells reached ~80% at 72 h. The erythroid maturation-related mRNA expression of α-globin, β-globin and glycophorin A (GPA) was increased markedly, which indicated that SB induced MEL differentiation. During MEL differentiation, the RbAp48 level showed a 1.5-fold increase at 72 h, and the globin transcription factor (GATA)-1 level was also upregulated in the early stage of differentiation. By contrast, the c-Myc level was gradually downregulated in MEL differentiation. Using an immunofluorescence assay, the results of the study directly showed that the average fluorescence intensity of RbAp48 in each cell reached an almost 1.7-fold increase at 72 and 96 h. This was consistent with the western blot results of RbAp48 during MEL differentiation. In addition, reduced expression of RbAp48 by RNA inference decreased SB-induced MEL differentiation by ~20%, indicating that a high level of RbAp48 was essential for MEL differentiation. Taken together, these results established a functional link between RbAp48 and erythroid differentiation.
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Affiliation(s)
- Wu-Lin Qi
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Ling-Ling Cao
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Jiang-Jiang Hu
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Jian-You Xue
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Ting-Ting Sang
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Ya-Juan Zheng
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Tao Chen
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Jie Wang
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Fu-Kun Zhao
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
| | - Shi-Fu Zhang
- College of Life Sciences, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, P.R. China
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Damante G, Scaloni A, Tell G. Thyroid tumors: novel insights from proteomic studies. Expert Rev Proteomics 2014; 6:363-76. [DOI: 10.1586/epr.09.51] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Niederberger E, Geisslinger G. Proteomics and NF-κB: an update. Expert Rev Proteomics 2013; 10:189-204. [PMID: 23573785 DOI: 10.1586/epr.13.5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The transcription factor NF-κB was discovered in 1986 and since then has been extensively studied in relation to cancer research and inflammatory or autoimmune diseases due to its important roles in the regulation of apoptosis and inflammation as well as innate and adaptive immunity. Although much is known about NF-κB signaling, novel NF-κB functions in different diseases are still being uncovered, together with its target proteins, interaction partners and regulators of its activation cascade. Proteomic approaches are particularly suited to the discovery of new proteins involved in distinct signal transduction cascades. This review provides an update on and extension of a recent review that summarized a number of proteomic approaches to NF-κB signaling. The studies discussed here utilized innovative techniques and offer several new hypotheses on the role of NF-κB in physiological and pathophysiological processes, which open new avenues for research on NF-κB in the future.
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Affiliation(s)
- Ellen Niederberger
- Pharmazentrum Frankfurt/ZAFES, Institut für Klinische Pharmakologie, Klinikum der Goethe-Universität Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany
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Pavlopoulos E, Jones S, Kosmidis S, Close M, Kim C, Kovalerchik O, Small SA, Kandel ER. Molecular mechanism for age-related memory loss: the histone-binding protein RbAp48. Sci Transl Med 2013; 5:200ra115. [PMID: 23986399 PMCID: PMC4940031 DOI: 10.1126/scitranslmed.3006373] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
To distinguish age-related memory loss more explicitly from Alzheimer's disease (AD), we have explored its molecular underpinning in the dentate gyrus (DG), a subregion of the hippocampal formation thought to be targeted by aging. We carried out a gene expression study in human postmortem tissue harvested from both DG and entorhinal cortex (EC), a neighboring subregion unaffected by aging and known to be the site of onset of AD. Using expression in the EC for normalization, we identified 17 genes that manifested reliable age-related changes in the DG. The most significant change was an age-related decline in RbAp48, a histone-binding protein that modifies histone acetylation. To test whether the RbAp48 decline could be responsible for age-related memory loss, we turned to mice and found that, consistent with humans, RbAp48 was less abundant in the DG of old than in young mice. We next generated a transgenic mouse that expressed a dominant-negative inhibitor of RbAp48 in the adult forebrain. Inhibition of RbAp48 in young mice caused hippocampus-dependent memory deficits similar to those associated with aging, as measured by novel object recognition and Morris water maze tests. Functional magnetic resonance imaging studies showed that within the hippocampal formation, dysfunction was selectively observed in the DG, and this corresponded to a regionally selective decrease in histone acetylation. Up-regulation of RbAp48 in the DG of aged wild-type mice ameliorated age-related hippocampus-based memory loss and age-related abnormalities in histone acetylation. Together, these findings show that the DG is a hippocampal subregion targeted by aging, and identify molecular mechanisms of cognitive aging that could serve as valid targets for therapeutic intervention.
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Affiliation(s)
- Elias Pavlopoulos
- Department of Neuroscience, Columbia University, New York, NY 10032, USA
- Kavli Institute for Brain Science, Columbia University, New York, NY 10032, USA
- Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA
| | - Sidonie Jones
- Department of Neurology, Columbia University, New York, NY 10032, USA
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Columbia University, New York, NY 10032, USA
| | - Stylianos Kosmidis
- Department of Neuroscience, Columbia University, New York, NY 10032, USA
- Kavli Institute for Brain Science, Columbia University, New York, NY 10032, USA
- Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA
| | - Maggie Close
- Department of Neuroscience, Columbia University, New York, NY 10032, USA
| | - Carla Kim
- Department of Neuroscience, Columbia University, New York, NY 10032, USA
| | - Olga Kovalerchik
- Department of Neuroscience, Columbia University, New York, NY 10032, USA
| | - Scott A. Small
- Department of Neurology, Columbia University, New York, NY 10032, USA
- Taub Institute for Research on Alzheimer’s Disease and the Aging Brain, Columbia University, New York, NY 10032, USA
| | - Eric R. Kandel
- Department of Neuroscience, Columbia University, New York, NY 10032, USA
- Kavli Institute for Brain Science, Columbia University, New York, NY 10032, USA
- Howard Hughes Medical Institute, Columbia University, New York, NY 10032, USA
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Selection of putative colorectal cancer markers by applying PCA on the soluble proteome of tumors: NDK A as a promising candidate. J Proteomics 2011; 74:874-86. [DOI: 10.1016/j.jprot.2011.02.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 02/22/2011] [Accepted: 02/28/2011] [Indexed: 12/27/2022]
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Fox AD, Hescott BJ, Blumer AC, Slonim DK. Connectedness of PPI network neighborhoods identifies regulatory hub proteins. Bioinformatics 2011; 27:1135-42. [PMID: 21367871 PMCID: PMC3072558 DOI: 10.1093/bioinformatics/btr099] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2010] [Revised: 02/01/2011] [Accepted: 02/17/2011] [Indexed: 02/02/2023] Open
Abstract
MOTIVATION With the growing availability of high-throughput protein-protein interaction (PPI) data, it has become possible to consider how a protein's local or global network characteristics predict its function. RESULTS We introduce a graph-theoretic approach that identifies key regulatory proteins in an organism by analyzing proteins' local PPI network structure. We apply the method to the yeast genome and describe several properties of the resulting set of regulatory hubs. Finally, we demonstrate how the identified hubs and putative target gene sets can be used to identify causative, functional regulators of differential gene expression linked to human disease. AVAILABILITY Code is available at http://bcb.cs.tufts.edu/hubcomps. CONTACT fox.andrew.d@gmail.com; slonim@cs.tufts.edu SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Andrew D Fox
- Department of Computer Science, Tufts University, Medford, MA 02155, USA.
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24
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Anderson AE, Karandikar UC, Pepple KL, Chen Z, Bergmann A, Mardon G. The enhancer of trithorax and polycomb gene Caf1/p55 is essential for cell survival and patterning in Drosophila development. Development 2011; 138:1957-66. [PMID: 21490066 DOI: 10.1242/dev.058461] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In vitro data suggest that the human RbAp46 and RbAp48 genes encode proteins involved in multiple chromatin remodeling complexes and are likely to play important roles in development and tumor suppression. However, to date, our understanding of the role of RbAp46/RbAp48 and its homologs in metazoan development and disease has been hampered by a lack of insect and mammalian mutant models, as well as redundancy due to multiple orthologs in most organisms studied. Here, we report the first mutations in the single Drosophila RbAp46/RbAp48 homolog Caf1, identified as strong suppressors of a senseless overexpression phenotype. Reduced levels of Caf1 expression result in flies with phenotypes reminiscent of Hox gene misregulation. Additionally, analysis of Caf1 mutant tissue suggests that Caf1 plays important roles in cell survival and segment identity, and loss of Caf1 is associated with a reduction in the Polycomb Repressive Complex 2 (PRC2)-specific histone methylation mark H3K27me3. Taken together, our results suggest suppression of senseless overexpression by mutations in Caf1 is mediated by participation of Caf1 in PRC2-mediated silencing. More importantly, our mutant phenotypes confirm that Caf1-mediated silencing is vital to Drosophila development. These studies underscore the importance of Caf1 and its mammalian homologs in development and disease.
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Affiliation(s)
- Aimée E Anderson
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
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25
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Mansfield RE, Musselman CA, Kwan AH, Oliver SS, Garske AL, Davrazou F, Denu JM, Kutateladze TG, Mackay JP. Plant homeodomain (PHD) fingers of CHD4 are histone H3-binding modules with preference for unmodified H3K4 and methylated H3K9. J Biol Chem 2011; 286:11779-91. [PMID: 21278251 DOI: 10.1074/jbc.m110.208207] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A major challenge in chromatin biology is to understand the mechanisms by which chromatin is remodeled into active or inactive states as required during development and cell differentiation. One complex implicated in these processes is the nucleosome remodeling and histone deacetylase (NuRD) complex, which contains both histone deacetylase and nucleosome remodeling activities and has been implicated in the silencing of subsets of genes involved in various stages of cellular development. Chromodomain-helicase-DNA-binding protein 4 (CHD4) is a core component of the NuRD complex and contains a nucleosome remodeling ATPase domain along with two chromodomains and two plant homeodomain (PHD) fingers. We have previously demonstrated that the second PHD finger of CHD4 binds peptides corresponding to the N terminus of histone H3 methylated at Lys(9). Here, we determine the solution structure of PHD2 in complex with H3K9me3, revealing the molecular basis of histone recognition, including a cation-π recognition mechanism for methylated Lys(9). Additionally, we demonstrate that the first PHD finger also exhibits binding to the N terminus of H3, and we establish the histone-binding surface of this domain. This is the first instance where histone binding ability has been demonstrated for two separate PHD modules within the one protein. These findings suggest that CHD4 could bind to two H3 N-terminal tails on the same nucleosome or on two separate nucleosomes simultaneously, presenting exciting implications for the mechanism by which CHD4 and the NuRD complex could direct chromatin remodeling.
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Affiliation(s)
- Robyn E Mansfield
- School of Molecular Bioscience, University of Sydney, Sydney, New South Wales, Australia
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26
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Dong H, Luo L, Hong S, Siu H, Xiao Y, Jin L, Chen R, Xiong M. Integrated analysis of mutations, miRNA and mRNA expression in glioblastoma. BMC SYSTEMS BIOLOGY 2010; 4:163. [PMID: 21114830 PMCID: PMC3002314 DOI: 10.1186/1752-0509-4-163] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Accepted: 11/29/2010] [Indexed: 11/10/2022]
Abstract
BACKGROUND Glioblastoma arises from complex interactions between a variety of genetic alterations and environmental perturbations. Little attention has been paid to understanding how genetic variations, altered gene expression and microRNA (miRNA) expression are integrated into networks which act together to alter regulation and finally lead to the emergence of complex phenotypes and glioblastoma. RESULTS We identified association of somatic mutations in 14 genes with glioblastoma, of which 8 genes are newly identified, and association of loss of heterozygosity (LOH) is identified in 11 genes with glioblastoma, of which 9 genes are newly discovered. By gene coexpression network analysis, we identified 15 genes essential to the function of the network, most of which are cancer related genes. We also constructed miRNA coexpression networks and found 19 important miRNAs of which 3 were significantly related to glioblastoma patients' survival. We identified 3,953 predicted miRNA-mRNA pairs, of which 14 were previously verified by experiments in other groups. Using pathway enrichment analysis we also found that the genes in the target network of the top 19 important miRNAs were mainly involved in cancer related signaling pathways, synaptic transmission and nervous systems processes. Finally, we developed new methods to decipher the pathway connecting mutations, expression information and glioblastoma. We identified 4 cis-expression quantitative trait locus (eQTL): TP53, EGFR, NF1 and PIK3C2G; 262 trans eQTL and 26 trans miRNA eQTL for somatic mutation; 2 cis-eQTL: NRAP and EGFR; 409 trans- eQTL and 27 trans- miRNA eQTL for lost of heterozygosity (LOH) mutation. CONCLUSIONS Our results demonstrate that integrated analysis of multi-dimensional data has the potential to unravel the mechanism of tumor initiation and progression.
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Affiliation(s)
- Hua Dong
- State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200433, China
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27
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Niederberger E, Geisslinger G. Analysis of NF-kappaB signaling pathways by proteomic approaches. Expert Rev Proteomics 2010; 7:189-203. [PMID: 20377387 DOI: 10.1586/epr.10.1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
NF-kappaB is a transcription factor that plays important roles in the regulation of apoptosis and inflammation as well as innate and adaptive immunity. Consequently, dysregulations in the NF-kappaB activation cascade have been associated with the pathogenesis of several diseases such as cancer, atherosclerosis and rheumatoid arthritis. Although NF-kappaB signaling pathways have been extensively investigated in this context, its varying components and targets are far from being completely elucidated. There is still an urgent need for the detection of novel NF-kappaB target proteins, novel interaction partners and novel regulators in the activation cascade, in particular with regard to its role in the aforementioned diseases. Therefore, several groups have performed different proteomic approaches to further investigate NF-kappaB signal transduction pathways. Most of these studies have been carried out in the area of cancer research; however, there are also several analyses in the field of inflammatory or autoimmune diseases. Furthermore, there have been a number of basic investigations that principally examined binding partners or so far unknown target proteins of NF-kappaB-related proteins. With these approaches, a number of novel and interesting proteins have been found that interfere with NF-kappaB signal transduction and might have an impact on NF-kappaB-related diseases. The results of these studies are summarized and discussed in this review.
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Affiliation(s)
- Ellen Niederberger
- Pharmazentrum Frankfurt/ZAFES, Institut für Klinische Pharmakologie, Klinikum der Goethe-Universität Frankfurt, Theodor Stern Kai 7, 60590 Frankfurt am Main, Germany.
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28
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Pacifico F, Leonardi A. Role of NF-kappaB in thyroid cancer. Mol Cell Endocrinol 2010; 321:29-35. [PMID: 19879919 DOI: 10.1016/j.mce.2009.10.010] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2009] [Revised: 09/21/2009] [Accepted: 10/20/2009] [Indexed: 12/15/2022]
Abstract
Thyroid cancer is the most common neoplasia of the endocrine system and accounts for approximately 1% of all newly diagnosed cancer cases. Its incidence has rapidly grown over the past few decades. Although most thyroid carcinomas are of the well-differentiated papillary histology, and respond well to treatment with surgical resection followed by radioactive iodine ablation, tumors with more aggressive phenotype, such as follicular, poorly differentiated, anaplastic, and medullary cancers, lead to almost 1500 patient deaths annually. Therefore, understanding molecular mechanisms that regulate the biology of these carcinomas could be helpful to identify new molecules acting as novel targets for therapeutic intervention. NF-kappaB has been recently shown to play an important role in thyroid cancer for its ability to control the proliferative and the anti-apoptotic signaling pathways of thyroid neoplastic cells. Oncogenic proteins RET/PTC, RAS and BRAF, that are involved in many aspects of thyroid carcinogenesis, can induce NF-kappaB activation in papillary, follicular, and medullary thyroid carcinomas, while constitutive de-regulated NF-kappaB activity has been found in anaplastic thyroid carcinomas. A number of NF-kappaB inhibitors have been demonstrated to induce anti-proliferative effects and/or massive apoptosis, especially in combination with radio- or chemo-therapy. The results obtained suggest that targeting NF-kappaB could be a promising strategy for advanced thyroid cancer treatment.
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Affiliation(s)
- Francesco Pacifico
- Istituto di Endocrinologia e Oncologia Sperimentale, CNR, Via Pansini 5, 80131 Naples, Italy
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Pacifico F, Crescenzi E, Mellone S, Iannetti A, Porrino N, Liguoro D, Moscato F, Grieco M, Formisano S, Leonardi A. Nuclear factor-{kappa}B contributes to anaplastic thyroid carcinomas through up-regulation of miR-146a. J Clin Endocrinol Metab 2010; 95:1421-30. [PMID: 20061417 DOI: 10.1210/jc.2009-1128] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
CONTEXT Micro-RNAs (miRNAs) have been recently involved in the modulation of several biological activities including cancer. Many human tumors show deregulated expression of miRNAs targeting oncogenes and/or tumor suppressors, thus identifying miRNAs as new molecular targets for cancer therapy. OBJECTIVES Nuclear factor (NF)-kappaB is strongly activated in human anaplastic thyroid carcinomas (ATCs). Because the regulation of miRNA expression is under control of RNA polymerase II-dependent transcription factors, we stably inactivated NF-kappaB in the ATC-derived FRO cell line and analyzed its miRNA profile in comparison with the parental counterpart by using a miRNA chip microarray. RESULTS The analysis revealed that a number of miRNAs were differentially expressed in the two cell lines. Among others, the miR-146a showed a strong down-regulation that was confirmed by quantitative real time RT-PCR. The expression of miR-146a was almost undetectable in mouse embryonic fibroblasts isolated from the RelA knockout mice and was restored after reexpression of RelA, thus indicating that miR-146a transcription was controlled by NF-kappaB. The inhibition of miR-146a expression in FRO cells decreased their oncogenic potential and increased the susceptibility to chemotherapeutic drug-induced apoptosis. No difference was found in the growth rate between untransfected and miR-146a-null FRO cells. Importantly, the miR-146a resulted in overexpression of human ATC specimens compared with the normal thyroid tissue. CONCLUSIONS Our results show that NF-kappaB contributes to anaplastic thyroid cancer up-regulating the expression of miR-146a.
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Affiliation(s)
- Francesco Pacifico
- Dipartimento di Biologia e Patologia Cellulare e Molecolare, "Federico II" University of Naples, Via S. Pansini 5, 80131 Naples, Italy
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Pisarev MA, Thomasz L, Juvenal GJ. Role of transforming growth factor beta in the regulation of thyroid function and growth. Thyroid 2009; 19:881-92. [PMID: 19645615 DOI: 10.1089/thy.2007.0303] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Transforming growth factor beta (TGF-beta) exists in nature as three isoforms. They exert their effects by binding to a type II receptor located at the cell membrane. The TGF-beta-type II receptor complex then recruits type I receptor, and this new complex stimulates the phosphorylation of Smads 2 and 3, which are subsequently transferred to the nucleus, where they regulate gene transcription. The thyroid gland expresses the TGF-beta1 gene mRNA and synthesizes the protein, which under physiologic conditions regulates thyroid growth and function. Different studies have demonstrated that TGF-beta1 inhibits cell proliferation and a number of functional parameters. These include cyclic adenosine monophosphate (AMP) formation, iodine uptake and organification, hormone secretion, and the expression of thyroglobulin, thyroid peroxidase, and Na(+)/I(-) symporter. The expression of the TGF-beta1 gene and protein may be stimulated by iodine under normal conditions. Since TGF-beta1 mimics some of the inhibitory actions of iodine, its participation in thyroid autoregulation has been proposed; however, this concept is still debated. In thyroid tumors, the inhibitory action of TGF-beta1 on cell proliferation is progressively lost as the tumor becomes more undifferentiated. The alterations in the signaling pathway of TGF-beta1 are not the same in tumors from different species. Even within the same species, such as the pig thyroid, the results may be different depending on whether monolayers or follicular suspensions are employed. The data suggest that it is not entirely possible to apply the results obtained in animal studies to normal or pathological human thyroid tissue. More studies are required to provide the information needed to develop treatments, based on targeting the signaling pathway of TGF-beta1, for undifferentiated thyroid cancer and other thyroid diseases.
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Affiliation(s)
- Mario A Pisarev
- Department of Radiobiology, University of Buenos Aires School of Medicine, Argentina.
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31
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Smallridge RC, Marlow LA, Copland JA. Anaplastic thyroid cancer: molecular pathogenesis and emerging therapies. Endocr Relat Cancer 2009; 16:17-44. [PMID: 18987168 PMCID: PMC2829440 DOI: 10.1677/erc-08-0154] [Citation(s) in RCA: 286] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Anaplastic thyroid cancer (ATC) is a rare malignancy. While external beam radiation therapy has improved locoregional control, the median survival of approximately 4 months has not changed in more than half a century due to uncontrolled systemic metastases. The objective of this study was to review the literature in order to identify potential new strategies for treating this highly lethal cancer. PubMed searches were the principal source of articles reviewed. The molecular pathogenesis of ATC includes mutations in BRAF, RAS, catenin (cadherin-associated protein), beta 1, PIK3CA, TP53, AXIN1, PTEN, and APC genes, and chromosomal abnormalities are common. Several microarray studies have identified genes and pathways preferentially affected, and dysregulated microRNA profiles differ from differentiated thyroid cancers. Numerous proteins involving transcription factors, signaling pathways, mitosis, proliferation, cell cycle, apoptosis, adhesion, migration, epigenetics, and protein degradation are affected. A variety of agents have been successful in controlling ATC cell growth both in vitro and in nude mice xenografts. While many of these new compounds are in cancer clinical trials, there are few studies being conducted in ATC. With the recent increased knowledge of the many critical genes and proteins affected in ATC, and the extensive array of targeted therapies being developed for cancer patients, there are new opportunities to design clinical trials based upon tumor molecular profiling and preclinical studies of potentially synergistic combinatorial novel therapies.
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Affiliation(s)
- Robert C Smallridge
- Department of Internal Medicine, Mayo Clinic, Jacksonville, Florida 32224, USA.
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Cecconi D, Zamò A, Bianchi E, Parisi A, Barbi S, Milli A, Rinalducci S, Rosenwald A, Hartmann E, Zolla L, Chilosi M. Signal transduction pathways of mantle cell lymphoma: A phosphoproteome-based study. Proteomics 2008; 8:4495-506. [DOI: 10.1002/pmic.200800080] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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