期刊论文详细信息
PLoS Pathogens
HIV-1 Integrates Widely throughout the Genome of the Human Blood Fluke Schistosoma mansoni
Nancy Holroyd1  Gabriel Rinaldi2  Thomas Huckvale3  Caroline Durrant3  Anna V. Protasio3  Victoria H. Mann3  Sutas Suttiprapa3  Isheng J. Tsai4  Tatiana Pushkarsky5  Matthew Berriman6  Larisa Dubrovsky6  Hong-bin Yan6  Sergey Iordanskiy6  Paul J. Brindley6  Michael I. Bukrinsky6 
[1] Biodiversity Research Center, Academia Sinica, Taipei, Taiwan;Department of Microbiology, Faculty of Science, Mahidol University, Phyathai, Rachthewee, Bangkok;Department of Microbiology, Immunology & Tropical Medicine, and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, The George Washington University, Washington, DC, United States of America;Department of Pathology, Faculty of Medicine, Khon Kaen University, Muang Khon Kaen, Thailand;Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Xujiaping 1, Lanzhou, Gansu, The People's Republic of China;Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, United Kingdom
关键词: HIV-1;    Schistosoma;    Genomic libraries;    Virions;    Invertebrate genomics;    Schistosoma mansoni;    Genomic library construction;    Sequence alignment;   
DOI  :  10.1371/journal.ppat.1005931
学科分类:生物科学(综合)
来源: Public Library of Science
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【 摘 要 】

Schistosomiasis is the most important helminthic disease of humanity in terms of morbidity and mortality. Facile manipulation of schistosomes using lentiviruses would enable advances in functional genomics in these and related neglected tropical diseases pathogens including tapeworms, and including their non-dividing cells. Such approaches have hitherto been unavailable. Blood stream forms of the human blood fluke, Schistosoma mansoni, the causative agent of the hepatointestinal schistosomiasis, were infected with the human HIV-1 isolate NL4-3 pseudotyped with vesicular stomatitis virus glycoprotein. The appearance of strong stop and positive strand cDNAs indicated that virions fused to schistosome cells, the nucleocapsid internalized and the RNA genome reverse transcribed. Anchored PCR analysis, sequencing HIV-1-specific anchored Illumina libraries and Whole Genome Sequencing (WGS) of schistosomes confirmed chromosomal integration; >8,000 integrations were mapped, distributed throughout the eight pairs of chromosomes including the sex chromosomes. The rate of integrations in the genome exceeded five per 1,000 kb and HIV-1 integrated into protein-encoding loci and elsewhere with integration bias dissimilar to that of human T cells. We estimated ~ 2,100 integrations per schistosomulum based on WGS, i.e. about two or three events per cell, comparable to integration rates in human cells. Accomplishment in schistosomes of post-entry processes essential for HIV-1replication, including integrase-catalyzed integration, was remarkable given the phylogenetic distance between schistosomes and primates, the natural hosts of the genus Lentivirus. These enigmatic findings revealed that HIV-1 was active within cells of S. mansoni, and provided the first demonstration that HIV-1 can integrate into the genome of an invertebrate.

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