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Minimal Phenotype of Mice Homozygous for a Null Mutation in the Forkhead/Winged Helix Gene, Mf2

机译:小鼠的叉头/翅螺旋基因,Mf2中的空突变的纯合子的最小表型。

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Mf2 (mesoderm/mesenchyme forkhead 2) encodes a forkhead/winged helix transcription factor expressed in numerous tissues of the mouse embryo, including paraxial mesoderm, somites, branchial arches, vibrissae, developing central nervous system, and developing kidney. We have generated mice homozygous for a null mutation in the Mf2 gene (Mf2lacZ ) to examine its role during embryonic development. The lacZallele also allows monitoring of Mf2 gene expression. Homozygous null mutants are viable and fertile and have no major developmental defects. Some mutants show renal abnormalities, including kidney hypoplasia and hydroureter, but the penetrance of this phenotype is only 40% or lower, depending on the genetic background. These data suggest that Mf2 can play a unique role in kidney development, but there is functional redundancy in this organ and other tissues with other forkhead/winged helix genes.
机译: Mf2 (中胚层/间质分叉头2)编码在小鼠胚胎的许多组织中表达的前叉/有翅螺旋转录因子,包括近轴中胚层,体节、,弓,触毛,中枢神经系统的发育和发育肾。我们已经产生了纯合子,它们在 Mf2 基因( Mf2 lacZ )中具有无效突变,以检查其在胚胎发育中的作用。 lacZ 等位基因还可以监控 Mf2 基因表达。纯合无效突变体是活的和可育的,并且没有主要的发育缺陷。一些突变体表现出肾脏异常,包括肾发育不全和输尿管积水,但是根据遗传背景,该表型的渗透率仅为40%或更低。这些数据表明, Mf2 在肾脏发育中可以发挥独特的作用,但是在该器官和其他组织中,具有其他叉头状或翅状螺旋基因,具有功能冗余。

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