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R Virgen-Slane JM Rozovics KD Fitzgerald T Ngo W Chou GJ van der Heden van Noort DV Filippov PD Gershon BL Semler 《Proceedings of the National Academy of Sciences of the United States of America》2012,109(36):14634-14639
A previously described mammalian cell activity, called VPg unlinkase, specifically cleaves a unique protein-RNA covalent linkage generated during the viral genomic RNA replication steps of a picornavirus infection. For over three decades, the identity of this cellular activity and its normal role in the uninfected cell had remained elusive. Here we report the purification and identification of VPg unlinkase as the DNA repair enzyme, 5'-tyrosyl-DNA phosphodiesterase-2 (TDP2). Our data show that VPg unlinkase activity in different mammalian cell lines correlates with their differential expression of TDP2. Furthermore, we show that recombinant TDP2 can cleave the protein-RNA linkage generated by different picornaviruses without impairing the integrity of viral RNA. Our results reveal a unique RNA repair-like function for TDP2 and suggest an unusual role in host-pathogen interactions for this cellular enzyme. On the basis of the identification of TDP2 as a potential antiviral target, our findings may lead to the development of universal therapeutics to treat the millions of individuals afflicted annually with diseases caused by picornaviruses, including myocarditis, aseptic meningitis, encephalitis, hepatitis, and the common cold. 相似文献
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Anneke T. Vulto-van Silfhout Conny M.A. van Ravenswaaij Jayne Y. Hehir-Kwa Eugène T.P. Verwiel Rita Dirks Steven van Vooren Albert Schinzel Bert B.A. de Vries Nicole de Leeuw 《European journal of medical genetics》2013,56(9):471-474
The European Cytogeneticists Association Register of Unbalanced Chromosome Aberrations (ECARUCA, www.ecaruca.net) is an online database initiated in 2003 that collects and provides detailed, curated clinical and molecular information on rare unbalanced chromosome aberrations. ECARUCA now contains over 4800 cases with a total of more than 6600 genetic aberrations and has over 3000 account holders worldwide. Recently, the ECARUCA web site was renewed, including the presentation of interesting case reports in collaboration with the European Journal of Medical Genetics. This article gives an overview of the current status and future plans of the online ECARUCA database. 相似文献
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Joyce M.G. Florisson Irene M.J. Mathijssen Belinda Dumee Jeannette A.M. Hoogeboom Pino J. Poddighe Ben A. Oostra Jean Pierre Frijns Linda Koster Annelies de Klein Bert Eussen Bert B.A. de Vries Sigrid Swagemakers Peter J. van der Spek Annemieke J.M.H. Verkerk PhD 《American journal of medical genetics. Part A》2013,161(2):244-253
In a screening project of patients with (complex) craniosynostosis using genomic arrays, we identified two patients with craniosynostosis and microcephaly with a deletion in the 2p15p16.1 chromosomal region. This region has been associated with a new microdeletion syndrome, for which patients have various features in common, including microcephaly and intellectual disability. Deletions were identified using Affymetrix 250K SNP array and further characterized by fluorescence in situ hybridization (FISH) analysis and qPCR. The deletions in our two patients overlapped within the 2p15p16.1 microdeletion syndrome area and were 6.8 and 6.9 Mb in size, respectively. FISH and qPCR confirmed the presence of only one copy in this region. Finemapping of the breakpoints indicated precise borders in our patients and were further finemapped in two other previously reported patients. Clinical features of patients with deletions in the 2p15p16.1 region vary. Including data from our patients, now eight out of nine reported patients have microcephaly, one of the major features, and all had intellectual disability. The current reported two patients add different forms of craniosynostosis to the clinical spectrum of this recently recognized microdeletion syndrome. © 2013 Wiley Periodicals, Inc. 相似文献
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Andrea Grosso Gitana Scozzari Fabrizio Bert Maria Antonietta Mabilia Roberta Siliquini Mario Morino 《Surgical endoscopy》2013,27(9):3370-3376