Mice lacking Wnt2b are viable and display a postnatal olfactory bulb phenotype.

Mice lacking Wnt2b are viable and display a postnatal olfactory bulb phenotype.
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DOI:
10.1016/j.neulet.2012.01.062
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发表时间:
2012-03-14
影响因子:
2.5
通讯作者:
Yamaguchi TP
Yamaguchi TP
中科院分区:
医学4区
文献类型:
--
作者:
Tsukiyama T;Yamaguchi TP

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Wnt是一种分泌型糖蛋白,在胚胎发育过程中起重要作用。Wnt2b在原肠胚形成期间在原条(PS)中瞬时表达,在器官发生期间在几个器官中瞬时表达。为了确定Wnt2b在小鼠发育过程中的生物学功能,我们建立了Wnt2b的条件无效等位基因。缺乏Wnt2b的小鼠是可行的,可生育的,并显示出正常的寿命,然而,成年Wnt2b突变小鼠的嗅球长度显着减少。我们的研究结果表明,Wnt2b主要在原肠胚形成和器官发生中起支持作用,在许多组织中与典型的Wnt(如Wnt2)冗余地发挥作用。
Wnts are secreted glycoproteins that play important roles in embryonic development. Wnt2b is transiently expressed in the primitive streak (PS) during gastrulation and in several organs during organogenesis. To determine the biological function of Wnt2b during mouse development, we established a conditional null allele of Wnt2b. Mice lacking Wnt2b were viable, fertile, and displayed a normal life span, however, the olfactory bulb in adult Wnt2b mutant mice was significantly reduced in length. Our results suggest that Wnt2b primarily plays a supportive role in gastrulation and organogenesis, functioning redundantly with canonical Wnts, such as Wnt2, in numerous tissues.
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