Cyclin M2 (CNNM2) knockout mice show mild hypomagnesaemia and developmental defects.

Cyclin M2 (CNNM2) knockout mice show mild hypomagnesaemia and developmental defects.
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细胞周期蛋白M2 (CNNM2)敲除小鼠表现为轻度低镁血症和发育缺陷。

DOI:
10.1038/s41598-021-87548-6
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发表时间:
2021-04-15
期刊:
影响因子:
4.6
通讯作者:
de Baaij JHF
de Baaij JHF
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Franken GAC;Seker M;Bos C;Siemons LAH;van der Eerden BCJ;Christ A;Hoenderop JGJ;Bindels RJM;Müller D;Breiderhoff T;de Baaij JHF

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细胞周期蛋白M2(CNNM 2)突变的患者患有低镁血症,癫痫发作和智力残疾。虽然CNNM 2的分子功能仍有争议,但该蛋白质被认为是肾脏Mg 2+重吸收所必需的。在这里,我们使用通过CRISPR/Cas9技术产生的Cnnm2敲除小鼠模型来评估CNNM 2在Mg 2+稳态中的作用。Cnnm2 +/−小鼠在胚胎第18天出现孟德尔分布。然而,只有四只Cnnm2 −/−幼崽出生时是活着的。与野生型同窝仔相比,Cnnm2 −/−幼仔的血清Mg 2+浓度显著较低。随后,成年Cnnm2 +/−小鼠被喂食低、对照或高Mg2+饮食两周。与Cnnm2 +/+小鼠相比,成年Cnnm2 +/−小鼠表现出轻度低镁血症,血清Ca2+水平升高,与膳食Mg2+摄入量无关。粪便分析显示Cnnm2 +/−小鼠中Mg2+和Ca2+排泄增加。Trpm6,Trpm7和Slc41a1在肾脏和结肠中的转录谱没有显示基于基因型的影响。股骨的显微计算机断层扫描分析显示骨形态和密度相等。总之,CNNM 2对胚胎发育和Mg 2+稳态至关重要。我们的数据表明CNNM 2在肠道中的一种以前未描述的作用,这可能导致小鼠和患者的Mg 2+缺乏症。
Patients with mutations in Cyclin M2 (CNNM2) suffer from hypomagnesaemia, seizures, and intellectual disability. Although the molecular function of CNNM2 is under debate, the protein is considered essential for renal Mg2+ reabsorption. Here, we used a Cnnm2 knock out mouse model, generated by CRISPR/Cas9 technology, to assess the role of CNNM2 in Mg2+ homeostasis. Breeding Cnnm2+/− mice resulted in a Mendelian distribution at embryonic day 18. Nevertheless, only four Cnnm2−/− pups were born alive. The Cnnm2−/− pups had a significantly lower serum Mg2+ concentration compared to wildtype littermates. Subsequently, adult Cnnm2+/− mice were fed with low, control, or high Mg2+ diets for two weeks. Adult Cnnm2+/− mice showed mild hypomagnesaemia compared to Cnnm2+/+ mice and increased serum Ca2+ levels, independent of dietary Mg2+ intake. Faecal analysis displayed increased Mg2+ and Ca2+ excretion in the Cnnm2+/− mice. Transcriptional profiling of Trpm6, Trpm7, and Slc41a1 in kidneys and colon did not reveal effects based on genotype. Microcomputed tomography analysis of the femurs demonstrated equal bone morphology and density. In conclusion, CNNM2 is vital for embryonic development and Mg2+ homeostasis. Our data suggest a previously undescribed role of CNNM2 in the intestine, which may contribute to the Mg2+ deficiency in mice and patients.
DOI: 10.1085/jgp.200609502
发表时间: 2006-05
影响因子: 3.8
作者:
Li, Mingjiang;Jiang, Jianmin;Yue, Lixia
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DOI: 10.1016/j.ejmg.2018.07.014
发表时间: 2019-03-01
影响因子: 1.9
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通讯作者: Capra, Valeria
DOI: 10.1038/srep28565
发表时间: 2016-06-28
期刊: Scientific reports
影响因子: 4.6
作者:
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DOI: 10.1113/jp275705
发表时间: 2018-03-01
期刊: The Journal of physiology
影响因子: --
作者:
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通讯作者: de Baaij JHF
DOI: 10.1371/journal.pgen.1004267
发表时间: 2014-04
期刊: PLoS genetics
影响因子: 4.5
作者:
Arjona FJ;de Baaij JH;Schlingmann KP;Lameris AL;van Wijk E;Flik G;Regele S;Korenke GC;Neophytou B;Rust S;Reintjes N;Konrad M;Bindels RJ;Hoenderop JG
通讯作者: Hoenderop JG