The Shisa3 knockout mouse exhibits normal bone phenotype

The Shisa3 knockout mouse exhibits normal bone phenotype
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Shisa3基因敲除小鼠表现出正常的骨表型

DOI:
10.1007/s00774-019-01014-y
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发表时间:
2019
影响因子:
3.3
通讯作者:
Yukio Nakamura
Yukio Nakamura
中科院分区:
医学3区
文献类型:
--
作者:
Kohei Murakami;He Zhifeng;Takako Suzuki;Yasuhiro Kobayashi;Yukio Nakamura

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WNT信号在骨骼发育和骨骼疾病中都起着重要作用,其中WNT抑制因子在骨代谢中起着关键作用。SHISA3阻断Frizzled型受体的成熟和向细胞表面的转运,从而抑制肺癌中的Wnt/β-连环蛋白信号通路。然而,Shisa3在骨生物学中的作用尚不清楚。这项研究发现Shisa3在小鼠的头盖骨中有强烈的表达,尤其是在成骨细胞中。此外,腺病毒介导的小鼠Shisa3基因转移显著抑制了WNT3a诱导的β-连环蛋白的核转位和WNT靶基因Axin2mRNA的表达。在Shisa3基因敲除(Shisa3KO)小鼠的骨表型评估中,微型计算机断层扫描、成骨细胞标志物的mRNA表达和骨骼准备与Shisa3野生型小鼠相比都没有显著差异。对典型的Wnt信号靶基因(Axin2、Lef1、Dkk1和Tnfrsf11b)在P0.5的颅骨中的mRNA表达分析也没有发现显著的结果。在Axin2Cre/ERT2敲入小鼠中,Shisa3KO组小鼠头盖骨中Axin2表达的细胞数与对照组相当。因此,Shisa3在骨骼发育中的功能似乎是多余的,可能与Shisa家族的其他成员一样。
Wnt signaling is important for both skeletal development and bone disease, with Wnt inhibitory factors playing critical roles in bone metabolism. SHISA3 blocks the maturation and transportation of Frizzled receptors to the cell surface, thereby inhibiting the Wnt/β-catenin signaling pathway in lung cancer. However, the function of Shisa3 in bone biology remains uninvestigated. This study found that Shisa3 was strongly expressed in the calvarial bones of mice, especially in osteoblasts. In addition, adenovirus-mediated gene transfer of murine Shisa3 significantly inhibited Wnt3a-induced nuclear translocation ofβ-catenin and mRNA expression of the Wnt target geneAxin2. In bone phenotype assessments ofShisa3knockout (Shisa3KO) mice, micro-computed tomography, mRNA expressions of osteoblast markers, and skeletal preparations all displayed no significant differences compared withShisa3wild-type mice. mRNA expression analysis of canonical Wnt signaling target genes (Axin2,Lef1,Dkk1, andTnfrsf11b) in calvarial bones at P0.5 also revealed no significant findings. InAxin2Cre/ERT2knock-in mice, the number ofAxin2-expressing cells in the calvariae ofShisa3KO and control mice were comparable. Thus, there appears to be a redundancy in the function of Shisa3 in bone development, likely with other Shisa family members.
Katsuhiko Nishimori:“通过在哺乳动物细胞中的表达来表征鸡 P450c17 cDNA。”
DOI: --
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DOI: 10.1016/j.ydbio.2007.03.028
发表时间: 2007-06-15
影响因子: 2.7
作者:
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通讯作者: Aizawa, Shinichi
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发表时间: 2008-02-01
影响因子: 2.5
作者:
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DOI: 10.1016/j.cell.2004.11.051
发表时间: 2005-01-28
期刊: CELL
影响因子: 64.5
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