Mice carrying paternal knockout of imprinted Grb10 do not show compulsive behaviour

Mice carrying paternal knockout of imprinted Grb10 do not show compulsive behaviour
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携带父亲印记 Grb10 基因敲除的小鼠不会表现出强迫行为

DOI:
10.1101/2020.04.03.016014
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发表时间:
2020
期刊:
--
影响因子:
--
通讯作者:
Rienecker K
Rienecker K
中科院分区:
--
文献类型:
--
作者:
Rienecker K

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缺乏父本表达imprintedGrb 10的小鼠表现出许多社会行为缺陷,包括增强的同种理毛表型。然而,这也可能是强迫行为的指标,Grb 10 +/p小鼠胡须生长的增加被认为是一种强迫性行为的指标。在这里,我们测试是否强迫行为是一个更普遍的表型在Grb 10 +/p小鼠通过检查大理石埋在三个不同的成年年龄(2,6和10个月)。我们还使用高架十字迷宫(elevated plus maze,EFL)检查了小鼠的潜在混淆焦虑表型。Grb 10 +/p小鼠在任何年龄的大理石掩埋测试中的任何测量结果与野生型同窝对照小鼠均无差异。尽管Grb 10 +/p小鼠比野生型小鼠表现出更多的冒险行为,但在标准焦虑指标上也没有差异。这些数据表明Grb 10 +/p小鼠通常没有更强的强迫性,并且增强的同种理毛可能指示改变的社会行为。此外,研究人员发现的行为改变与其他已发表的研究结果相结合,表明Grb 10和更普遍的印记基因在介导冒险行为方面发挥了作用。
Mice lacking paternal expression of imprintedGrb10show a number of social behaviour deficits, including an enhanced allogrooming phenotype. However, this could also index compulsive behaviour, and the increased whisker barbering seen inGrb10+/pmice has been suggested to be indicative of a trichotillomania-type behaviour. Here we test whether compulsive behaviour is a more general phenotype inGrb10+/pmice by examining marble burying at three different adult ages (2, 6 and 10 months). We also examined the mice for potentially confounding anxiety phenotypes using the elevated plus maze (EPM).Grb10+/pmice showed no difference from wild-type littermate controls on any measure in the marble burying test at any age. There was no difference in standard anxiety measures either, althoughGrb10+/pmice displayed more risk-taking behaviours on the EPM than wild-type mice. These data suggest thatGrb10+/pmice are not generally more compulsive, and that the enhanced allogrooming is probably indicative of altered social behaviour. Furthermore, the altered behaviours seen on the EPM adds to other published findings suggesting thatGrb10, and imprinted genes more generally, have a role in mediating risk-taking behaviour.
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