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Cui J, Wen D, Wang L, Meng C, Wang Y, Zhao Z, Wu C. CRISPR/Cas9-induced asap1a and asap1b co-knockout mutant zebrafish displayed abnormal embryonic development and impaired neutrophil migration. Gene Expr Patterns 2023; 49:119331. [PMID: 37390886 DOI: 10.1016/j.gep.2023.119331] [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: 04/13/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/02/2023]
Abstract
ASAP1 (Arf-GAP with SH3 domain, the ankyrin repeat and the PH domain) is the GTPase activating protein of the small G protein Arf. To understand more about the physiological functions of ASAP1 in vivo, we chose to use the zebrafish as an animal model, and analyzed the characterization of asap1 using loss-of-function studies. Here, two isoforms in zebrafish, asap1a and asap1b, were found to be homologous to human ASAP1, and the gene knockout zebrafish lines for asap1a and asap1b were established using the CRISPR/Cas9 technique with different insertions and deletions of bases. Zebrafish with asap1a and asap1b co-knockout showed a significant reduction in survival and hatching rates, as well as an increase in malformation rates during the early stages of development, while the asap1a or asap1b single knockout mutants did not affect the growth and development of individual zebrafish. Exploring the gene expression compensation between asap1a and asap1b using qRT-PCR, we found that asap1b had increased expression when asap1a was knocked out, showing a clear compensatory effect against asap1a knockout; In turn, asap1a did not have detectable compensating expression after asap1b knockout. Furthermore, the co-knockout homozygous mutants displayed impaired neutrophil migration to Mycobacterium marinum infection, and showed an increased bacterial load. Together, these are the first inherited asap1a and/or asap1b mutant zebrafish lines by the CRISPR/Cas9 gene editing approach, and by serving as useful models, they can significantly contribute to better annotation and follow-up physiological studies of human ASAP1.
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Affiliation(s)
- Jia Cui
- Department of Microbiology, Changzhi Medical College, Changzhi, 046000, PR China; Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, PR China
| | - Da Wen
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, PR China
| | - Liqing Wang
- School of Basic Medical Sciences, Shanxi Medical University, Taiyuan, 030012, PR China
| | - Chaoqun Meng
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, PR China
| | - Yuhuan Wang
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, PR China
| | - Zhonghua Zhao
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, PR China.
| | - Changxin Wu
- Institutes of Biomedical Sciences, Shanxi University, Taiyuan, 030006, PR China.
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2
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Wu X, Shen F, Jiang G, Xue G, Philips S, Gardner L, Cunningham G, Bales C, Cantor E, Schneider BP. A non-coding GWAS variant impacts anthracycline-induced cardiotoxic phenotypes in human iPSC-derived cardiomyocytes. Nat Commun 2022; 13:7171. [PMID: 36418322 PMCID: PMC9684507 DOI: 10.1038/s41467-022-34917-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 11/11/2022] [Indexed: 11/24/2022] Open
Abstract
Anthracyclines, widely used to treat breast cancer, have the potential for cardiotoxicity. We have previously identified and validated a germline single nucleotide polymorphism, rs28714259, associated with an increased risk of anthracycline-induced heart failure. We now provide insights into the mechanism by which rs28714259 might confer increased risk of cardiac damage. Using hiPSC-derived cardiomyocyte cell lines with either intrinsic polymorphism or CRISPR-Cas9-mediated deletion of rs28714259 locus, we demonstrate that glucocorticoid receptor signaling activated by dexamethasone pretreatment prior to doxorubicin exposure preserves cardiomyocyte viability and contractility in cardiomyocytes containing the major allele. Homozygous loss of the rs28714259 major allele diminishes dexamethasone's protective effect. We further demonstrate that the risk allele of rs28714259 disrupts glucocorticoid receptor and rs28714259 binding affinity. Finally, we highlight the activation of genes and pathways involved in cardiac hypertrophy signaling that are blocked by the risk allele, suggesting a decreased adaptive survival response to doxorubicin-related stress.
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Affiliation(s)
- Xi Wu
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Fei Shen
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Guanglong Jiang
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Gloria Xue
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Santosh Philips
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Laura Gardner
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Geneva Cunningham
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Casey Bales
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Erica Cantor
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Bryan Paul Schneider
- Department of Hematology and Oncology, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
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3
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Gasilina A, Yoon HY, Jian X, Luo R, Randazzo PA. A lysine-rich cluster in the N-BAR domain of ARF GTPase-activating protein ASAP1 is necessary for binding and bundling actin filaments. J Biol Chem 2022; 298:101700. [PMID: 35143843 PMCID: PMC8902617 DOI: 10.1016/j.jbc.2022.101700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 12/05/2022] Open
Abstract
Actin filament maintenance is critical for both normal cell homeostasis and events associated with malignant transformation. The ADP-ribosylation factor GTPase-activating protein ASAP1 regulates the dynamics of filamentous actin-based structures, including stress fibers, focal adhesions, and circular dorsal ruffles. Here, we have examined the molecular basis for ASAP1 association with actin. Using a combination of structural modeling, mutagenesis, and in vitro and cell-based assays, we identify a putative-binding interface between the N-Bin-Amphiphysin-Rvs (BAR) domain of ASAP1 and actin filaments. We found that neutralization of charges and charge reversal at positions 75, 76, and 79 of ASAP1 reduced the binding of ASAP1 BAR-pleckstrin homology tandem to actin filaments and abrogated actin bundle formation in vitro. In addition, overexpression of actin-binding defective ASAP1 BAR-pleckstrin homology [K75, K76, K79] mutants prevented cellular actin remodeling in U2OS cells. Exogenous expression of [K75E, K76E, K79E] mutant of full-length ASAP1 did not rescue the reduction of cellular actin fibers consequent to knockdown of endogenous ASAP1. Taken together, our results support the hypothesis that the lysine-rich cluster in the N-BAR domain of ASAP1 is important for regulating actin filament organization.
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Affiliation(s)
- Anjelika Gasilina
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA; Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, Washington, District of Columbia, USA
| | - Hye-Young Yoon
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Xiaoying Jian
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Ruibai Luo
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Paul A Randazzo
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA.
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4
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Schreiber C, Gruber A, Roßwag S, Saraswati S, Harkins S, Thiele W, Foroushani ZH, Munding N, Schmaus A, Rothley M, Dimmler A, Tanaka M, Garvalov BK, Sleeman JP. Loss of ASAP1 in the MMTV-PyMT model of luminal breast cancer activates AKT, accelerates tumorigenesis, and promotes metastasis. Cancer Lett 2022; 533:215600. [PMID: 35181478 DOI: 10.1016/j.canlet.2022.215600] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/10/2022] [Accepted: 02/11/2022] [Indexed: 12/31/2022]
Abstract
ASAP1 is a multi-domain adaptor protein that regulates cytoskeletal dynamics, receptor recycling and intracellular vesicle trafficking. Its expression is associated with poor prognosis in a variety of cancers, and can promote cell migration, invasion and metastasis. Although amplification and expression of ASAP1 has been associated with poor survival in breast cancer, we found that in the autochthonous MMTV-PyMT model of luminal breast cancer, ablation of ASAP1 resulted in an earlier onset of tumor initiation and increased metastasis. This was due to tumor cell-intrinsic effects of ASAP1 deletion, as ASAP1 deficiency in tumor, but not in stromal cells was sufficient to replicate the enhanced tumorigenicity and metastasis observed in the ASAP1-null MMTV-PyMT mice. Loss of ASAP1 in MMTV-PyMT mice had no effect on proliferation, apoptosis, angiogenesis or immune cell infiltration, but enhanced mammary gland hyperplasia and tumor cell invasion, indicating that ASAP1 can accelerate tumor initiation and promote dissemination. Mechanistically, these effects were associated with a potent activation of AKT. Importantly, lower ASAP1 levels correlated with poor prognosis and enhanced AKT activation in human ER+/luminal breast tumors, validating our findings in the MMTV-PyMT mouse model for this subtype of breast cancer. Taken together, our findings reveal that ASAP1 can have distinct functions in different tumor types and demonstrate a tumor suppressive activity for ASAP1 in luminal breast cancer.
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Affiliation(s)
- Caroline Schreiber
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Annette Gruber
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Sven Roßwag
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Supriya Saraswati
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Shannon Harkins
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany
| | - Wilko Thiele
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany; Institute for Biological and Chemical Systems - Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT) Campus North, D-76344 Karlsruhe, Germany
| | - Zahra Hajian Foroushani
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Natalie Munding
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany
| | - Anja Schmaus
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany; Institute for Biological and Chemical Systems - Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT) Campus North, D-76344 Karlsruhe, Germany
| | - Melanie Rothley
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany; Institute for Biological and Chemical Systems - Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT) Campus North, D-76344 Karlsruhe, Germany
| | - Arno Dimmler
- Vincentius-Diakonissen-Kliniken, 76135, Karlsruhe, Germany
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry, Heidelberg University, 69120, Heidelberg, Germany; Center for Integrative Medicine and Physics, Institute for Advanced Study, Kyoto University, 606-8501, Kyoto, Japan
| | - Boyan K Garvalov
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany.
| | - Jonathan P Sleeman
- European Center for Angioscience (ECAS), Medical Faculty Mannheim, Heidelberg University, 68167, Mannheim, Germany; Institute for Biological and Chemical Systems - Biological Information Processing (IBCS-BIP), Karlsruhe Institute of Technology (KIT) Campus North, D-76344 Karlsruhe, Germany.
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5
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Gadahi JA, Ehsan M, Wang S, Zhang Z, Yan R, Song X, Xu L, Li X. Recombinant protein of Haemonchus contortus small GTPase ADP-ribosylation factor 1 (HcARF1) modulate the cell mediated immune response in vitro. Oncotarget 2017; 8:112211-112221. [PMID: 29348819 PMCID: PMC5762504 DOI: 10.18632/oncotarget.22662] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 11/03/2017] [Indexed: 01/08/2023] Open
Abstract
ADP-ribosylation factors (ARFs) are members of the Ras-related small GTPase family involved in the vesicular trafficking regulation. Immunomodulatory effects of these proteinson host cell arenot being addressed yet. H. contortus small GTPase ADP-ribosylation 1 gene (HcARF1) was cloned and recombinant protein of HcARF1 (rHcARF1) was successfully expressed in Escherichia coli. Binding activity of rHcARF1 to goat PBMCs was confirmed by immunofluorescence assay (IFA) and its immunomudulatory effects on cytokine secretion, cell proliferation, cell migration and nitric oxide production (NO) were observed by co-incubation of rHcARF1. IFA results revealed that rHcARF1 could bind to the PBMCs. The interaction of rHcARF1 modulated the cytokine production, the production of IL-4, IL-10 and IL-17 was increased in a dose dependent manner, however, the IFN-γ production was significantly decreased. Cell migration and NO production were significantly increased by rHcARF1, whereas, rHcARF1 treatment significantly suppressed the proliferation of the PBMC in a dose dependent manner. Our findings showed that the rHcARF1 play important roles on the goat PBMCs.
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Affiliation(s)
- Javaid Ali Gadahi
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China.,Department of Veterinary Parasitology, Sindh Agriculture University, Tando Jam, Pakistan
| | - Muhammad Ehsan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Shuai Wang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Zhenchao Zhang
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Ruofeng Yan
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Xiaokai Song
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Lixin Xu
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
| | - Xiangrui Li
- College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, PR China
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6
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Dubois S, Viailly PJ, Bohers E, Bertrand P, Ruminy P, Marchand V, Maingonnat C, Mareschal S, Picquenot JM, Penther D, Jais JP, Tesson B, Peyrouze P, Figeac M, Desmots F, Fest T, Haioun C, Lamy T, Copie-Bergman C, Fabiani B, Delarue R, Peyrade F, André M, Ketterer N, Leroy K, Salles G, Molina TJ, Tilly H, Jardin F. Biological and Clinical Relevance of Associated Genomic Alterations in MYD88 L265P and non-L265P-Mutated Diffuse Large B-Cell Lymphoma: Analysis of 361 Cases. Clin Cancer Res 2016; 23:2232-2244. [PMID: 27923841 DOI: 10.1158/1078-0432.ccr-16-1922] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 11/01/2016] [Accepted: 11/17/2016] [Indexed: 01/01/2023]
Abstract
Purpose:MYD88 mutations, notably the recurrent gain-of-function L265P variant, are a distinguishing feature of activated B-cell like (ABC) diffuse large B-cell lymphoma (DLBCL), leading to constitutive NFκB pathway activation. The aim of this study was to examine the distinct genomic profiles of MYD88-mutant DLBCL, notably according to the presence of the L265P or other non-L265P MYD88 variants.Experimental Design: A cohort of 361 DLBCL cases (94 MYD88 mutant and 267 MYD88 wild-type) was submitted to next-generation sequencing (NGS) focusing on 34 genes to analyze associated mutations and copy number variations, as well as gene expression profiling, and clinical and prognostic analyses.Results: Importantly, we highlighted different genomic profiles for MYD88 L265P and MYD88 non-L265P-mutant DLBCL, shedding light on their divergent backgrounds. Clustering analysis also segregated subgroups according to associated genetic alterations among patients with the same MYD88 mutation. We showed that associated CD79B and MYD88 L265P mutations act synergistically to increase NFκB pathway activation, although the majority of MYD88 L265P-mutant cases harbors downstream NFκB alterations, which can predict BTK inhibitor resistance. Finally, although the MYD88 L265P variant was not an independent prognostic factor in ABC DLBCL, associated CD79B mutations significantly improved the survival of MYD88 L265P-mutant ABC DLBCL in our cohort.Conclusions: This study highlights the relative heterogeneity of MYD88-mutant DLBCL, adding to the field's knowledge of the theranostic importance of MYD88 mutations, but also of associated alterations, emphasizing the usefulness of genomic profiling to best stratify patients for targeted therapy. Clin Cancer Res; 23(9); 2232-44. ©2016 AACR.
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Affiliation(s)
- Sydney Dubois
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | - Pierre-Julien Viailly
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France.,LITIS EA 4108, Normandie Université, Rouen, France
| | - Elodie Bohers
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | - Philippe Bertrand
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | - Philippe Ruminy
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | - Vinciane Marchand
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | | | - Sylvain Mareschal
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | | | - Dominique Penther
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | | | | | | | | | | | | | - Corinne Haioun
- Unité Hémopathies Lymphoïdes, AP-HP Hôpital Henri Mondor, Créteil, France
| | | | | | - Bettina Fabiani
- Laboratoire de Pathologie, AP-HP Hôpital Saint Antoine, Paris, France
| | - Richard Delarue
- Department of Hematology, AP-HP Hôpital Necker, Paris, France
| | | | - Marc André
- CHU Dinant Godinne, UcL Namur, Yvoir, Belgium
| | | | - Karen Leroy
- Inserm U955 Team 09, AP-HP Hôpital Henri Mondor, Créteil, France
| | | | - Thierry J Molina
- Pathology, AP-HP Hôpital Necker, Université Paris Descartes, Paris, France
| | - Hervé Tilly
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France
| | - Fabrice Jardin
- Inserm U918, Centre Henri Becquerel, Université de Rouen, IRIB, Rouen, France.
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7
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Hu X, Peng W, Chen X, Zhao Z, Zhang J, Zhou J, Cai B, Chen J, Zhou Y, Lu X, Ying B. No Significant Effect of ASAP1 Gene Variants on the Susceptibility to Tuberculosis in Chinese Population. Medicine (Baltimore) 2016; 95:e3703. [PMID: 27227929 PMCID: PMC4902353 DOI: 10.1097/md.0000000000003703] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Recent studies have proposed that the ASAP1 gene participates in regulating the adaptive immune response to Mycobacterium tuberculosis infection. A GWAS study has reported that ASAP1 polymorphisms (rs4733781 and rs10956514) were associated with the risk of tuberculosis (TB) in Russians. But due to population heterogeneity, different races would have different causative polymorphisms, and the aim of this study was to investigate the association between single nucleotide polymorphisms (SNPs) of the ASAP1 gene and TB risk in Chinese population.A total of 7 SNPs in the ASAP1 gene were genotyped in 1115 Western Chinese Han and 914 Tibetan population using an improved multiplex ligation detection reaction (iMLDR) method. The associations of SNPs with TB risk and clinical phenotypes were determined based on the distributions of allelic frequencies and different genetic models. A meta-analysis was carried out to further assess the relationship between ASAP1 polymorphism and TB risk.Statistical comparisons of cases and controls after correction for multiple testing did not yield any significant associations with the risk of TB via analyses of a single locus, haplotype, and subgroup differences. Meta-analysis showed no evidence supporting association between rs10956514 and overall risk for TB. Subsequent analysis referring to the genotypes of SNPs in relationship to clinical phenotypes identified that rs4236749 was associated with different serum C-reactive protein levels, suggesting a role of this locus in influencing the inflammatory state of Western Chinese Han patients with TB.Our present data revealed that ASAP1 polymorphisms are unlikely to confer susceptibility to TB in the Western Chinese Han and Tibetan populations, which challenges the promising roles of the ASAP1 gene in the development of TB and highlights the importance of validating the association findings across ethnicities.
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Affiliation(s)
- Xuejiao Hu
- From the Department of Laboratory Medicine (XH, WP, ZZ, JZhang, JZhou, BC, JC, YZ, XL, BY) and Division of Tuberculosis (XC), West China Hospital, Sichuan University, Chengdu, P.R. China
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8
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Tien DN, Kishihata M, Yoshikawa A, Hashimoto A, Sabe H, Nishi E, Kamei K, Arai H, Kita T, Kimura T, Yokode M, Ashida N. AMAP1 as a negative-feedback regulator of nuclear factor-κB under inflammatory conditions. Sci Rep 2014; 4:5094. [PMID: 24865276 PMCID: PMC4035583 DOI: 10.1038/srep05094] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 05/07/2014] [Indexed: 12/24/2022] Open
Abstract
NF-κB is a major transcriptional factor regulating many cellular functions including inflammation; therefore, its appropriate control is of high importance. The detailed mechanism of its activation has been well characterized, but that of negative regulation is poorly understood. In this study, we showed AMAP1, an Arf-GTPase activating protein, as a negative feedback regulator for NF-κB by binding with IKKβ, an essential kinase in NF-κB signaling. Proteomics analysis identified AMAP1 as a binding protein with IKKβ. Overexpression of AMAP1 suppressed NF-κB activity by interfering the binding of IKKβ and NEMO, and deletion of AMAP1 augmented NF-κB activity. The activation of NF-κB induced translocation of AMAP1 to cytoplasm from cell membrane and nucleus, which resulted in augmented interaction of AMAP1 and IKKβ. These results demonstrated a novel role of AMAP1 as a negative feedback regulator of NF-κB, and presented it as a possible target for anti-inflammatory treatments.
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Affiliation(s)
- Dat Nguyen Tien
- 1] Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan [2] Department of Clinical Innovative Medicine, Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan [3] Department of Biomolecular Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - Masako Kishihata
- 1] Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan [2] Department of Clinical Innovative Medicine, Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan
| | - Ayumu Yoshikawa
- Department of Molecular Biology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Ari Hashimoto
- Department of Molecular Biology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Hisataka Sabe
- Department of Molecular Biology, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Eiichiro Nishi
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Kaeko Kamei
- Department of Biomolecular Engineering, Kyoto Institute of Technology, Kyoto, Japan
| | - Hidenori Arai
- Department of Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Toru Kita
- Kobe City Medical Center General Hospital, Kobe, Japan
| | - Takeshi Kimura
- Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Masayuki Yokode
- Department of Clinical Innovative Medicine, Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan
| | - Noboru Ashida
- 1] Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan [2] Department of Clinical Innovative Medicine, Institute for Advancement of Clinical and Translational Science, Kyoto University Hospital, Kyoto, Japan
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9
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Haque A, Koide N, Odkhuu E, Tsolmongyn B, Naiki Y, Komatsu T, Yoshida T, Yokochi T. Mouse pyrin and HIN domain family member 1 (pyhin1) protein positively regulates LPS-induced IFN-β and NO production in macrophages. Innate Immun 2013; 20:40-8. [DOI: 10.1177/1753425913481636] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The pyrin and HIN-domain (PYHIN) family member1 (pyhin1) is a member of PYHIN proteins and involved in transcriptional regulation of genes important for cell cycle control, differentiation and apoptosis. The regulatory action of mouse pyhin1 on LPS-induced inflammatory response was examined. LPS augmented the pyhin1 mRNA expression in murine RAW 264.7 macrophage cells and peritoneal macrophages. The augmentation of pyhin1 mRNA expression was abolished by parthenolide, a NF-κB inhibitor. Silencing of pyhin1 with small interfering RNA reduced the production of IFN‐β and NO. However, pyhin1 silencing did not affect the production of TNF-α, IL-6, IL-10 and prostaglandin E2. Reduced IFN-β production by pyhin1 silencing caused inactivation of STAT1 and reduced expression of IRF1. Pyhin1 silencing inhibited the expression of TRAF6, TBK1 and TRIF, which trigger IFN-β production in the MyD88-independent pathway. However, pyhin1 silencing did not affect the expression of MyD88, IRAK4 and several mitogen-activated protein kinases in the MyD88-dependent pathway. Taken together, mouse pyhin1 was suggested to be a NF-κB-responsible gene in response to LPS and positively regulate LPS-induced IFN-β and NO production through up-regulating the MyD88-independent signaling pathway.
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Affiliation(s)
- Abedul Haque
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Naoki Koide
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Erdenezaya Odkhuu
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Bilegtsaikhan Tsolmongyn
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Yoshikazu Naiki
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Takayuki Komatsu
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Tomoaki Yoshida
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
| | - Takashi Yokochi
- Department of Microbiology and Immunology, Aichi Medical University School of Medicine, Aichi, Japan
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