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Ye Z, Meng Q, Zhang W, He J, Zhao H, Yu C, Liang W, Li X, Wang H. Exploration of the Shared Gene and Molecular Mechanisms Between Endometriosis and Recurrent Pregnancy Loss. Front Vet Sci 2022; 9:867405. [PMID: 35601407 PMCID: PMC9120926 DOI: 10.3389/fvets.2022.867405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 03/14/2022] [Indexed: 12/14/2022] Open
Abstract
Endometriosis (EMs) is a common benign gynecological disease in women of childbearing age, which usually causes pelvic pain, secondary dysmenorrhea, and infertility. EMs has been linked to recurrent pregnancy loss (RPL) in epidemiological data. The relationship of both, however, remains unknown. The purpose of this study is to explore the underlying pathological mechanisms between EMs and RPL. We searched Gene Expression Omnibus (GEO) database to obtain omics data of EMs and RPL. Co-expression modules for EMs and RPL were investigated by using weighted gene co-expression network analysis (WGCNA). The intersections of gene modules with the strong correlation to EMs or RPL obtained by WGCNA analysis were considered as shared genes. MicroRNAs (miRNAs) and their corresponding target genes linked to EMs and RPL were found though the Human MicroRNA Disease Database (HMDD) and the miRTarbase database. Finally, we constructed miRNAs-mRNAs regulatory networks associated with the two disorders by using the intersection of previously obtained target genes and shared genes. We discovered as significant modules for EMs and RPL, respectively, by WGCNA. The energy metabolism might be the common pathogenic mechanism of EMs and RPL, according to the findings of a Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. We discovered several target genes that might be linked to these two disorders, as well as the potential mechanisms. RAB8B, GNAQ, H2AFZ, SUGT1, and LEO1 could be therapeutic candidates for RPL and EMs. The PI3K-Akt signaling pathway and platelet activation were potentially involved in the mechanisms of EM-induced RPL. Our findings for the first time revealed the underlying pathological mechanisms of EM-induced RPL and identified several useful biomarkers and potential therapeutic targets.
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Affiliation(s)
- Zhuang Ye
- Department of Rheumatology, The First Hospital of Jilin University, Changchun, China
| | - Qingxue Meng
- Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, China
| | - Weiwen Zhang
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
| | - Junli He
- Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, China
| | - Huanyi Zhao
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Chengwei Yu
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, China
- *Correspondence: Chengwei Yu
| | - Weizheng Liang
- Department of Pediatrics, Shenzhen University General Hospital, Shenzhen, China
- Weizheng Liang
| | - Xiushen Li
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, China
- Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen, China
- Xiushen Li
| | - Hao Wang
- Department of Obstetrics and Gynecology, Shenzhen University General Hospital, Shenzhen, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen, China
- Shenzhen Key Laboratory, Shenzhen University General Hospital, Shenzhen, China
- Hao Wang
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2
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Cao S, Huang S, Guo Y, Zhou L, Lu Y, Lai S. Proteomic-based identification of oocyte maturation-related proteins in mouse germinal vesicle oocytes. Reprod Domest Anim 2020; 55:1607-1618. [PMID: 32920902 DOI: 10.1111/rda.13819] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 09/02/2020] [Indexed: 12/25/2022]
Abstract
Oocyte proteins play an important role in oocyte maturation, fertilization and embryonic development. However, the protein composition of mouse germinal vesicle (GV) oocytes is still unclear. Using one-dimensional Sodium Dodecyl Sulphate Polyacrylamide Gel Electrophoresis (1D SDS-PAGE) and Reverse-phase liquid chromatography tandem mass spectrometry (RP-LC-MS/MS), we constructed a protein profile of mouse GV oocytes. First, our proteomics profile identified 1,405 different proteins from 11,000 mouse GV oocytes lacking zona pellucida. Second, with detailed bioinformatics analysis, a group of proteins that play an essential role in oocyte maturation was screened. In addition, the expression and localization of suppressor of G2 allele of skp1(SUGT1, also called SGT1), heterogeneous nuclear ribonucleoprotein K (Hnrpk), Seruin, Cullin1(Clu1) and nuclear distribution protein C (Nudc) in mouse ovaries and early embryos were also captured and investigated in this study. Moreover, the protein profile was submitted to the Proteomics Identifications Database (PRIDE) and is available via ProteomeXchange with the identifier PXD014314. Our research provides valuable resources for the study of oocyte proteins and oocyte maturation and helps to clarify the mechanisms of oocyte maturation.
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Affiliation(s)
- Senyang Cao
- Center of Reproductive Medicine, Huai'an Maternity and Child Health Care Center, Huai'an, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Shaoping Huang
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China.,Department of Histology and Embryology, Medical School, Southeast University, Nanjing, China
| | - Ying Guo
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Lin Zhou
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Ying Lu
- State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China
| | - Shanshan Lai
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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3
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Huang S, Huang Z, Ma C, Luo L, Li YF, Wu YL, Ren Y, Feng C. Acidic leucine-rich nuclear phosphoprotein-32A expression contributes to adverse outcome in acute myeloid leukemia. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:345. [PMID: 32355789 PMCID: PMC7186738 DOI: 10.21037/atm.2020.02.54] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Background Acidic leucine-rich nuclear phosphoprotein-32A (ANP32A) is a novel regulator of histone H3 acetylation and promotes leukemogenesis in acute myeloid leukemia (AML). However, its prognostic value in AML remains unclear. Methods In this study, we evaluated the prognostic significance of ANP32A expression using two independent large cohorts of cytogenetically normal AML (CN-AML) patients. Multivariable analysis in CN-AML group was also presented. Based on the ANP32A expression, its related genes, dysregulation of pathways, interaction network analysis between microRNAs and target genes, as well as methylation analysis were performed to unveil the complex functions behind ANP32A. Results Here we demonstrated overexpression of ANP32A was notably associated with unfavorable outcome in two independent cohorts of CN-AML patients (OS: P=0.012, EFS: P=0.005, n=185; OS: P=0.041, n=232), as well as in European Leukemia Net (ELN) Intermediate-I group (OS: P=0.018, EFS: P=0.045, n=115), National Comprehensive Cancer Network (NCCN) Intermediate Risk AML group (OS: P=0.048, EFS: P=0.039, n=225), and non-M3 AML group (OS: P=0.034, EFS: P=0.011, n=435). Multivariable analysis further validated ANP32A as a high-risk factor in CN-AML group. Multi-omics analysis presented overexpression of ANP32A was associated with aberrant expression of oncogenes and tumor suppressor, up/down-regulation of metabolic and immune-related pathways, dysregulation of microRNAs, and hypomethylation on CpG island and 1st Exon regions. Conclusions We proved ANP32A as a novel, potential unfavorable prognosticator and therapeutic target for AML.
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Affiliation(s)
- Sai Huang
- Department of Hematology, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhi Huang
- School of Electrical and Computer Engineering, Purdue University, West Lafayette, IN, USA
| | - Chao Ma
- Department of Hematology, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Lan Luo
- Department of Hematology, Peking University Third Hospital, Beijing 100191, China
| | - Yan-Fen Li
- Department of Hematology, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Yong-Li Wu
- Department of Hematology, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Yuan Ren
- Department of Hematology, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Cong Feng
- Department of Emergency, First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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4
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Costa-Martins AG, Lima L, Alves JMP, Serrano MG, Buck GA, Camargo EP, Teixeira MMG. Genome-wide identification of evolutionarily conserved Small Heat-Shock and eight other proteins bearing α-crystallin domain-like in kinetoplastid protists. PLoS One 2018; 13:e0206012. [PMID: 30346990 PMCID: PMC6197667 DOI: 10.1371/journal.pone.0206012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 10/04/2018] [Indexed: 11/18/2022] Open
Abstract
Small Heat-Shock Proteins (sHSPs) and other proteins bearing alpha-crystallin domains (ACD) participate in defense against heat and oxidative stress and play important roles in cell cycle, cytoskeleton dynamics, and immunological and pathological mechanisms in eukaryotes. However, little is known about these proteins in early-diverging lineages of protists such as the kinetoplastids. Here, ACD-like proteins (ACDp) were investigated in genomes of 61 species of 12 kinetoplastid genera, including Trypanosoma spp. (23 species of mammals, reptiles and frogs), Leishmania spp. (mammals and lizards), trypanosomatids of insects, Phytomonas spp. of plants, and bodonids. Comparison of ACDps based on domain architecture, predicted tertiary structure, phylogeny and genome organization reveals a kinetoplastid evolutionarily conserved repertoire, which diversified prior to trypanosomatid adaptation to parasitic life. We identified 9 ACDp orthologs classified in 8 families of TryACD: four previously recognized (HSP20, Tryp23A, Tryp23B and ATOM69), and four characterized for the first time in kinetoplastids (TryACDP, TrySGT1, TryDYX1C1 and TryNudC). A single copy of each ortholog was identified in each genome alongside TryNudC1/TrypNudC2 homologs and, overall, ACDPs were under strong selection pressures at main phylogenetic lineages. Transcripts of all ACDPs were identified across the life stages of T. cruzi, T. brucei and Leishmania spp., but proteomic profiles suggested that most ACDPs may be species- and stage-regulated. Our findings establish the basis for functional studies, and provided evolutionary and structural support for an underestimated repertoire of ACDps in the kinetoplastids.
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Affiliation(s)
- André G Costa-Martins
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Luciana Lima
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,INCT-EpiAmO-Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brazil
| | - João Marcelo P Alves
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
| | - Myrna G Serrano
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Gregory A Buck
- Department of Microbiology and Immunology, Virginia Commonwealth University, Richmond, VA, United States of America
| | - Erney P Camargo
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,INCT-EpiAmO-Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brazil
| | - Marta M G Teixeira
- Department of Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil.,INCT-EpiAmO-Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brazil
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5
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Plasma miR-324-3p and miR-1285 as diagnostic and prognostic biomarkers for early stage lung squamous cell carcinoma. Oncotarget 2018; 7:59664-59675. [PMID: 27517633 PMCID: PMC5312339 DOI: 10.18632/oncotarget.11198] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Accepted: 06/30/2016] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Specific biomarkers for early detection and outcome prediction of lung squamous cell carcinoma (LSCC) are still lacking. This study assessed the differentially expressed miRNAs as potential biomarkers for early stage LSCC. RESULTS Base on the results of multi-phase study, we found that miR-324-3p was significantly up-regulated, whereas mir-1285 was significantly down-regulated in plasma of stage I LSCC patients compared to healthy controls. ROC analysis showed that AUC of miR-324-3p and miR-1285 were 0.79 and 0.85, respectively. The combination of these two miRNAs could further improve the diagnostic accuracy (AUC = 0.89). The multivariate analysis revealed that plasma miR-324-3p level was an independent prognostic predictor for early stage LSCC. METHODS 395 patients and 195 healthy controls were enrolled in this study. We screened the differentially expressed plasma miRNAs using TaqMan Low Density Arrays (TLDA) followed by three-phase qRT-PCR validation. We also evaluated the association of candidate miRNAs with overall survival of early stage LSCC patients. Finally, the target genes of the candidate miRNAs were analyzed using public available databases and bioinformatics methods. CONCLUSIONS The current study suggests that plasma miR-324-3p and miR-1285 levels could serve as LSCC early detection markers while miR-324-3p may serve as a prognostic marker for LSCC patients.
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6
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Sahasrabudhe P, Rohrberg J, Biebl MM, Rutz DA, Buchner J. The Plasticity of the Hsp90 Co-chaperone System. Mol Cell 2017; 67:947-961.e5. [PMID: 28890336 DOI: 10.1016/j.molcel.2017.08.004] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/10/2017] [Accepted: 08/08/2017] [Indexed: 11/20/2022]
Abstract
The Hsp90 system in the eukaryotic cytosol is characterized by a cohort of co-chaperones that bind to Hsp90 and affect its function. Although progress has been made regarding the underlying biochemical mechanisms, how co-chaperones influence Hsp90 client proteins in vivo has remained elusive. By investigating the effect of 12 Hsp90 co-chaperones on the activity of different client proteins in yeast, we find that deletion of co-chaperones can have a neutral or negative effect on client activity but can also lead to more active clients. Only a few co-chaperones are active on all clients studied. Closely related clients and even point mutants can depend on different co-chaperones. These effects are direct because differences in client-co-chaperone interactions can be reconstituted in vitro. Interestingly, some co-chaperones affect client conformation in vivo. Thus, co-chaperones adapt the Hsp90 cycle to the requirements of the client proteins, ensuring optimal activation.
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Affiliation(s)
- Priyanka Sahasrabudhe
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, 85748 Garching, Germany
| | - Julia Rohrberg
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, 85748 Garching, Germany
| | - Maximillian M Biebl
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, 85748 Garching, Germany
| | - Daniel A Rutz
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, 85748 Garching, Germany
| | - Johannes Buchner
- Center for Integrated Protein Science at the Department of Chemistry, Technische Universität München, 85748 Garching, Germany.
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7
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Niikura Y, Kitagawa R, Ogi H, Kitagawa K. SGT1-HSP90 complex is required for CENP-A deposition at centromeres. Cell Cycle 2017; 16:1683-1694. [PMID: 28816574 PMCID: PMC5602426 DOI: 10.1080/15384101.2017.1325039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The centromere plays an essential role in accurate chromosome segregation, and defects in its function lead to aneuploidy and thus cancer. The centromere-specific histone H3 variant CENP-A is proposed to be the epigenetic mark of the centromere, as active centromeres require CENP-A–containing nucleosomes to direct the recruitment of multiple kinetochore proteins. CENP-A K124 ubiquitylation, mediated by CUL4A-RBX1-COPS8 E3 ligase activity, is required for CENP-A deposition at the centromere. However, the mechanism that controls the E3 ligase activity of the CUL4A-RBX1-COPS8 complex remains obscure. We have discovered that the SGT1-HSP90 complex is required for recognition of CENP-A by COPS8. Thus, the SGT1-HSP90 complex contributes to the E3 ligase activity of the CUL4A complex that is necessary for CENP-A ubiquitylation and CENP-A deposition at the centromere.
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Affiliation(s)
- Yohei Niikura
- a Greehey Children's Cancer Research Institute , Department of Molecular Medicine, UT Health Science Center San Antonio School of Medicine , San Antonio , TX , USA.,b The Research Institute at Nationwide Children's Hospital , Columbus , OH , USA
| | - Risa Kitagawa
- a Greehey Children's Cancer Research Institute , Department of Molecular Medicine, UT Health Science Center San Antonio School of Medicine , San Antonio , TX , USA.,b The Research Institute at Nationwide Children's Hospital , Columbus , OH , USA
| | - Hiroo Ogi
- b The Research Institute at Nationwide Children's Hospital , Columbus , OH , USA
| | - Katsumi Kitagawa
- a Greehey Children's Cancer Research Institute , Department of Molecular Medicine, UT Health Science Center San Antonio School of Medicine , San Antonio , TX , USA.,b The Research Institute at Nationwide Children's Hospital , Columbus , OH , USA
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8
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Willhoft O, Kerr R, Patel D, Zhang W, Al-Jassar C, Daviter T, Millson SH, Thalassinos K, Vaughan CK. The crystal structure of the Sgt1-Skp1 complex: the link between Hsp90 and both SCF E3 ubiquitin ligases and kinetochores. Sci Rep 2017; 7:41626. [PMID: 28139700 PMCID: PMC5282575 DOI: 10.1038/srep41626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Accepted: 12/21/2016] [Indexed: 12/05/2022] Open
Abstract
The essential cochaperone Sgt1 recruits Hsp90 chaperone activity to a range of cellular factors including SCF E3 ubiquitin ligases and the kinetochore in eukaryotes. In these pathways Sgt1 interacts with Skp1, a small protein that heterodimerizes with proteins containing the F-box motif. We have determined the crystal structure of the interacting domains of Saccharomyces cerevisiae Sgt1 and Skp1 at 2.8 Å resolution and validated the interface in the context of the full-length proteins in solution. The BTB/POZ domain of Skp1 associates with Sgt1 via the concave surface of its TPR domain using residues that are conserved in humans. Dimerization of yeast Sgt1 occurs via an insertion that is absent from monomeric human Sgt1. We identify point mutations that disrupt dimerization and Skp1 binding in vitro and find that the interaction with Skp1 is an essential function of Sgt1 in yeast. Our data provide a structural rationale for understanding the phenotypes of temperature-sensitive Sgt1 mutants and for linking Skp1-associated proteins to Hsp90-dependent pathways.
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Affiliation(s)
- Oliver Willhoft
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Biological Sciences, Malet Street, London, WC1E 7HX, UK
| | - Richard Kerr
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Division of Biosciences, Darwin Building, Gower Street, London, WC1E 6BT, UK
| | - Dipali Patel
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Biological Sciences, Malet Street, London, WC1E 7HX, UK
| | - Wenjuan Zhang
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Biological Sciences, Malet Street, London, WC1E 7HX, UK
| | - Caezar Al-Jassar
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Biological Sciences, Malet Street, London, WC1E 7HX, UK
| | - Tina Daviter
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Biological Sciences, Malet Street, London, WC1E 7HX, UK
| | - Stefan H Millson
- School of Life Sciences, Joseph Banks Laboratory, University of Lincoln, Lincoln, LN6 7TS, UK
| | - Konstantinos Thalassinos
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Division of Biosciences, Darwin Building, Gower Street, London, WC1E 6BT, UK
| | - Cara K Vaughan
- Institute of Structural and Molecular Biology, University College London and Birkbeck, Biological Sciences, Malet Street, London, WC1E 7HX, UK
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9
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Hong TJ, Hahn JS. Application of SGT1-Hsp90 chaperone complex for soluble expression of NOD1 LRR domain in E. coli. Biochem Biophys Res Commun 2016; 478:1647-52. [PMID: 27591899 DOI: 10.1016/j.bbrc.2016.08.174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 08/30/2016] [Indexed: 12/17/2022]
Abstract
NOD1 is an intracellular sensor of innate immunity which is related to a number of inflammatory diseases. NOD1 is known to be difficult to express and purify for structural and biochemical studies. Based on the fact that Hsp90 and its cochaperone SGT1 are necessary for the stabilization and activation of NOD1 in mammals, SGT1 was chosen as a fusion partner of the leucine-rich repeat (LRR) domain of NOD1 for its soluble expression in Escherichia coli. Fusion of human SGT1 (hSGT1) to NOD1 LRR significantly enhanced the solubility, and the fusion protein was stabilized by coexpression of mouse Hsp90α. The expression level of hSGT1-NOD1 LRR was further enhanced by supplementation of rare codon tRNAs and exchange of antibiotic marker genes.
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Affiliation(s)
- Tae-Joon Hong
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Ji-Sook Hahn
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
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10
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Roundhill E, Turnbull D, Burchill S. Localization of MRP-1 to the outer mitochondrial membrane by the chaperone protein HSP90β. FASEB J 2015; 30:1712-23. [PMID: 26722004 DOI: 10.1096/fj.15-283408] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 12/08/2015] [Indexed: 12/29/2022]
Abstract
Overexpression of plasma membrane multidrug resistance-associated protein 1 (MRP-1) in Ewing's sarcoma (ES) predicts poor outcome. MRP-1 is also expressed in mitochondria, and we have examined the submitochondrial localization of MRP-1 and investigated the mechanism of MRP-1 transport and role of this organelle in the response to doxorubicin. The mitochondrial localization of MRP-1 was examined in ES cell lines by differential centrifugation and membrane solubilization by digitonin. Whether MRP-1 is chaperoned by heat shock proteins (HSPs) was investigated by immunoprecipitation, immunofluorescence microscopy, and HSP knockout using small hairpin RNA and inhibitors (apoptozole, 17-AAG, and NVPAUY). The effect of disrupting mitochondrial MRP-1-dependent efflux activity on the cytotoxic effect of doxorubicin was investigated by counting viable cell number. Mitochondrial MRP-1 is glycosylated and localized to the outer mitochondrial membrane, where it is coexpressed with HSP90. MRP-1 binds to both HSP90 and HSP70, although only inhibition of HSP90β decreases expression of MRP-1 in the mitochondria. Disruption of mitochondrial MRP-1-dependent efflux significantly increases the cytotoxic effect of doxorubicin (combination index, <0.9). For the first time, we have demonstrated that mitochondrial MRP-1 is expressed in the outer mitochondrial membrane and is a client protein of HSP90β, where it may play a role in the doxorubicin-induced resistance of ES.-Roundhill, E., Turnbull, D., Burchill, S. Localization of MRP-1 to the outer mitochondrial membrane by the chaperone protein HSP90β.
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Affiliation(s)
- Elizabeth Roundhill
- Children's Cancer Research Group, Leeds Institute of Cancer and Pathology, St. James's University Hospital, Leeds, United Kingdom; and
| | - Doug Turnbull
- Wellcome Trust Centre for Mitochondrial Research, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Susan Burchill
- Children's Cancer Research Group, Leeds Institute of Cancer and Pathology, St. James's University Hospital, Leeds, United Kingdom; and
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11
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Kamien B, Digilio MC, Novelli A, O'Donnell S, Bain N, Meldrum C, Dudding-Byth T, Scott RJ, Goel H. Narrowing the critical region for overgrowth within 13q14.2-q14.3 microdeletions. Eur J Med Genet 2015; 58:629-33. [PMID: 26475974 DOI: 10.1016/j.ejmg.2015.10.006] [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] [Received: 06/25/2015] [Revised: 08/30/2015] [Accepted: 10/07/2015] [Indexed: 10/22/2022]
Abstract
Large chromosomal deletions from 13q13.3 to 13q21.3 have previously been associated with overgrowth. We present two patients with deletions at 13q14.2q14.3 who have macrocephaly, tall stature relative to their parents, cardiac phenotypes, and intellectual disability. This report narrows the critical region for tall stature, macrocephaly, and possibly cardiac disease.
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Affiliation(s)
- Benjamin Kamien
- Hunter Genetics, Newcastle, New South Wales, Australia; The University of Newcastle, School of Medicine and Public Health, Newcastle, New South Wales, Australia; The University of Newcastle, School of Biomedical Sciences and Pharmacy, Newcastle, New South Wales, Australia.
| | - M Cristina Digilio
- Department of Medical Genetics, Bambino Gesù Pediatric Hospital, IRCCS, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, Bambino Gesù Pediatric Hospital, IRCCS, Rome, Italy
| | | | - Nicole Bain
- Molecular Medicine, Pathology North, Newcastle, New South Wales, Australia
| | - Cliff Meldrum
- Molecular Medicine, Pathology North, Newcastle, New South Wales, Australia
| | - Tracy Dudding-Byth
- Hunter Genetics, Newcastle, New South Wales, Australia; The University of Newcastle, School of Medicine and Public Health, Newcastle, New South Wales, Australia
| | - Rodney J Scott
- The University of Newcastle, School of Biomedical Sciences and Pharmacy, Newcastle, New South Wales, Australia; Molecular Medicine, Pathology North, Newcastle, New South Wales, Australia
| | - Himanshu Goel
- Hunter Genetics, Newcastle, New South Wales, Australia; The University of Newcastle, School of Medicine and Public Health, Newcastle, New South Wales, Australia
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