國家衛生研究院 NHRI:Item 3990099045/8420
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    Please use this identifier to cite or link to this item: http://ir.nhri.org.tw/handle/3990099045/8420


    Title: Novel synthetic medea selfish genetic elements drive population replacement in drosophila;A theoretical exploration of medea -dependent population suppression
    Authors: Akbari, OS;Chen, CH;Marshall, JM;Huang, H;Antoshechkin, I;Hay, BA
    Contributors: Institute of Molecular and Genomic Medicine
    Abstract: Insects act as vectors for diseases of plants, animals, and humans. Replacement of wild insect populations with genetically modified individuals unable to transmit disease provides a potentially self-perpetuating method of disease prevention. Population replacement requires a gene drive mechanism in order to spread linked genes mediating disease refractoriness through wild populations. We previously reported the creation of synthetic Medea selfish genetic elements able to drive population replacement in Drosophila. These elements use microRNA-mediated silencing of myd88, a maternally expressed gene required for embryonic dorso-ventral pattern formation, coupled with early zygotic expression of a rescuing transgene, to bring about gene drive. Medea elements that work through additional mechanisms are needed in order to be able to carry out cycles of population replacement and/or remove existing transgenes from the population, using second-generation elements that spread while driving first-generation elements out of the population. Here we report the synthesis and population genetic behavior of two new synthetic Medea elements that drive population replacement through manipulation of signaling pathways involved in cellular blastoderm formation or Notch signaling, demonstrating that in Drosophila Medea elements can be generated through manipulation of diverse signaling pathways. We also describe the mRNA and small RNA changes in ovaries and early embryos associated from Medea-bearing females. Finally, we use modeling to illustrate how Medea elements carrying genes that result in diapause-dependent female lethality could be used to bring about population suppression.
    Date: 2014-11
    Relation: ACS Synthetic Biology. 2014 Nov;3(12):915-928.
    Link to: http://dx.doi.org/10.1021/sb300079h
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2161-5063&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000347140300009
    Cited Times(Scopus): http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84919639905
    Appears in Collections:[Chun-Hong Chen] Periodical Articles

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