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  • Farnsworth, Bryn, et al. (författare)
  • Morpholino knockdown of qkib leads to disturbed neural development in the larval zebrafish.
  • Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
    • Quaking (QKI) is a member of the Signal Transduction and Activation of RNA (STAR) protein family and has been found to regulate the splicing, quantity, and translation of mRNA. Several studies have also found an association of QKI with a variety of human neurological disorders, such as schizophrenia, ataxia, and Alzheimer’s disease, amongst others. Mouse mutants show clear developmental defects in myelin formation. Critical periods for the investigation of myelin aberration have been precluded by the embryonic lethality of Qk null mice mutants. We have previously shown that the zebrafish is a suitable tool in which to interrogate qki function. Within this study we employ a gene-knockdown approach with the use of morpholinos and the Tg(olig2:DsRed2), and Tg(-4.9sox10:eGFP) transgenic zebrafish lines, and confocal imaging. We find a reduction in the number of oligodendrocytes, critical for the formation of myelin. We also find aberrations in the development and arborization of motor neurons across the spinal cord, and a complete absence of eurydendroid cells within the cerebellum. These findings have parallels to both neuroanatomical evidence from viable Qk mutant mice, and to aspects of related human neurological disease.
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