RNA interference can be used to disrupt gene function in tardigrades

How morphological diversity arises is a key question in evolutionary developmental biology. As a long-term approach to address this question, we are developing the water bear Hypsibius dujardini (Phylum Tardigrada) as a model system. We expect that using a close relative of two well-studied models,...

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Vydané v:	Development Genes and Evolution Ročník 223; číslo 3; s. 171 - 181
Hlavní autori:	Tenlen, Jennifer R., McCaskill, Shaina, Goldstein, Bob
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Berlin/Heidelberg Springer-Verlag 01.05.2013 Springer Nature B.V
Predmet:	Animal Genetics and Genomics Animals Arthropoda Biomedical and Life Sciences Caenorhabditis elegans Cell Biology classification Cloning, Molecular Developmental Biology Double-stranded RNA Drosophila Embryogenesis evolution Evolutionary Biology Evolutionary genetics gene targeting Genes Genes, Lethal genetics Green fluorescent protein Hypsibius dujardini Lethality Life Sciences messenger RNA mRNA Nematoda Original Article phenotype Phenotypes Phylogeny Plant Genetics and Genomics reverse transcriptase polymerase chain reaction RNA Interference RNA-mediated interference Tardigrada Tardigrada - classification Tardigrada - genetics Zoology Evo-devo RNA interference Tardigrade Extreme environments
ISSN:	0949-944X, 3059-3239, 1432-041X, 1432-041X, 3059-3247
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Popis
Shrnutí:	How morphological diversity arises is a key question in evolutionary developmental biology. As a long-term approach to address this question, we are developing the water bear Hypsibius dujardini (Phylum Tardigrada) as a model system. We expect that using a close relative of two well-studied models, Drosophila (Phylum Arthropoda) and Caenorhabditis elegans (Phylum Nematoda), will facilitate identifying genetic pathways relevant to understanding the evolution of development. Tardigrades are also valuable research subjects for investigating how organisms and biological materials can survive extreme conditions. Methods to disrupt gene activity are essential to each of these efforts, but no such method yet exists for the Phylum Tardigrada. We developed a protocol to disrupt tardigrade gene functions by double-stranded RNA-mediated RNA interference (RNAi). We showed that targeting tardigrade homologs of essential developmental genes by RNAi produced embryonic lethality, whereas targeting green fluorescent protein did not. Disruption of gene functions appears to be relatively specific by two criteria: targeting distinct genes resulted in distinct phenotypes that were consistent with predicted gene functions and by RT-PCR, RNAi reduced the level of a target mRNA and not a control mRNA. These studies represent the first evidence that gene functions can be disrupted by RNAi in the phylum Tardigrada. Our results form a platform for dissecting tardigrade gene functions for understanding the evolution of developmental mechanisms and survival in extreme environments.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 Present address: Dept. of Biology, Seattle Pacific University, 3307 3rd Ave W., Suite 205, Seattle, WA 98119, USA
ISSN:	0949-944X 3059-3239 1432-041X 1432-041X 3059-3247
DOI:	10.1007/s00427-012-0432-6