The genomes of four tapeworm species reveal adaptations to parasitism

Isheng J Tsai, Magdalena Zarowiecki, Nancy Holroyd, Alejandro Garciarrubio, Alejandro Sanchez-Flores, Karen L Brooks, Alan Tracey, Raúl J Bobes, Gladis Fragoso, Edda Sciutto, Martin Aslett, Helen Beasley, Hayley M Bennett, Jianping Cai, Federico Camicia, Richard Clark, Marcela Cucher, Nishadi De Silva, Tim A Day, Peter DeplazesKarel Estrada, Cecilia Fernández, Peter W H Holland, Junling Hou, Songnian Hu, Thomas Huckvale, Stacy S Hung, Laura Kamenetzky, Jacqueline A Keane, Ferenc Kiss, Uriel Koziol, Olivia Lambert, Kan Liu, Xuenong Luo, Yingfeng Luo, Natalia Macchiaroli, Sarah Nichol, Jordi Paps, John Parkinson, Natasha Pouchkina-Stantcheva, Nick Riddiford, Mara Rosenzvit, Gustavo Salinas, James D Wasmuth, Mostafa Zamanian, Yadong Zheng, Xuepeng Cai, Xavier Soberón, Peter D Olson, Juan P Laclette, Taenia solium Genome Consortium

    Research output: Contribution to journalArticlepeer-review

    562 Citations (Scopus)

    Abstract

    Tapeworms (Cestoda) cause neglected diseases that can be fatal and are difficult to treat, owing to inefficient drugs. Here we present an analysis of tapeworm genome sequences using the human-infective species Echinococcus multilocularis, E. granulosus, Taenia solium and the laboratory model Hymenolepis microstoma as examples. The 115- to 141-megabase genomes offer insights into the evolution of parasitism. Synteny is maintained with distantly related blood flukes but we find extreme losses of genes and pathways that are ubiquitous in other animals, including 34 homeobox families and several determinants of stem cell fate. Tapeworms have specialized detoxification pathways, metabolism that is finely tuned to rely on nutrients scavenged from their hosts, and species-specific expansions of non-canonical heat shock proteins and families of known antigens. We identify new potential drug targets, including some on which existing pharmaceuticals may act. The genomes provide a rich resource to underpin the development of urgently needed treatments and control.

    Original languageEnglish
    Pages (from-to)57-63
    Number of pages7
    JournalNATURE
    Volume496
    Issue number7443
    DOIs
    Publication statusPublished - 4 Apr 2013

    Keywords

    • Adaptation, Physiological
    • Animals
    • Biological Evolution
    • Cestoda
    • Cestode Infections
    • Conserved Sequence
    • Echinococcus granulosus
    • Echinococcus multilocularis
    • Genes, Helminth
    • Genes, Homeobox
    • Genome, Helminth
    • HSP70 Heat-Shock Proteins
    • Humans
    • Hymenolepis
    • Metabolic Networks and Pathways
    • Molecular Targeted Therapy
    • Parasites
    • Proteome
    • Stem Cells
    • Taenia solium

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