Postnatal loss of the insulin receptor in osteoprogenitor cells does not impart a metabolic phenotype.

Postnatal loss of the insulin receptor in osteoprogenitor cells does not impart a metabolic phenotype.
复制标题

出生后骨祖细胞中胰岛素受体的丧失不会赋予代谢表型。

DOI:
10.1038/s41598-020-65717-3
复制
发表时间:
2020
期刊:
影响因子:
4.6
通讯作者:
Thrailkill,KathrynM
Thrailkill,KathrynM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Fowlkes,JohnL;ClayBunn,R;Kalaitzoglou,Evangelia;Ray,Phil;Popescu,Iuliana;Thrailkill,KathrynM

文献摘要

参考文献

相似文献

成骨细胞特异性胰岛素信号传导、骨钙素激活和葡萄糖代谢稳态之间的关系已被证明是复杂的,并且在动物模型系统和人类中可能不一致。此外,出生后获得的成骨细胞特异性胰岛素缺乏对胰腺-胰腺-胰腺回路的影响尚未研究。为了探索这种关系,我们建立了一个模型,出生后消除胰岛素信号在骨祖细胞。在IRl°x/lox/Osx-Cre+/−基因型雄性和雌性小鼠(命名为出生后OIRKO)中,在约10周龄后诱导胰岛素受体的骨祖细胞选择性消融。在约21周龄时,然后对小鼠进行表型和代谢表征。出生后OIRKO小鼠表现出显着降低低羧化骨钙素(ucOC)的循环浓度,在男性和女性相比,控制同窝出生。然而,在出生后OIRKO和对照小鼠之间没有观察到差异:(瘦体重或脂肪量);空腹血清胰岛素; HbA 1c;葡萄糖耐量试验期间的葡萄糖动力学;或在胰岛区域或胰岛形态中,这表明虽然ucOC受到骨祖细胞中胰岛素信号传导的影响,但骨钙素或其衍生物(ucOC),和葡萄糖体内平衡。
The relationship between osteoblast-specific insulin signaling, osteocalcin activation and gluco-metabolic homeostasis has proven to be complex and potentially inconsistent across animal-model systems and in humans. Moreover, the impact of postnatally acquired, osteoblast-specific insulin deficiency on the pancreas-to-skeleton-to-pancreas circuit has not been studied. To explore this relationship, we created a model of postnatal elimination of insulin signaling in osteoprogenitors. Osteoprogenitor-selective ablation of the insulin receptor was induced after ~10 weeks of age in IRl°x/lox/Osx-Cre+/−genotypic male and female mice (designated postnatal-OIRKO). At ~21 weeks of age, mice were then phenotypically and metabolically characterized. Postnatal-OIRKO mice demonstrated a significant reduction in circulating concentrations of undercarboxylated osteocalcin (ucOC), in both males and females compared with control littermates. However, no differences were observed between postnatal-OIRKO and control mice in: body composition (lean or fat mass); fasting serum insulin; HbA1c; glucose dynamics during glucose tolerance testing; or in pancreatic islet area or islet morphology, demonstrating that while ucOC is impacted by insulin signaling in osteoprogenitors, there appears to be little to no relationship between osteocalcin, or its derivative (ucOC), and glucose homeostasis in this model.
通过准弹性光散射确定囊泡药物制剂的尺寸,并与电子显微镜和超速离心进行比较。
DOI: --
发表时间: 1987
期刊: Journal of Pharmacy and Science
影响因子: --
作者:
M. S. McCracken;M. Sammons
通讯作者: M. Sammons
DOI: 10.1016/0003-2697(86)90316-7
发表时间: 1986-11-15
影响因子: 2.9
作者:
GOORMAGHTIGH, E;SCARBOROUGH, GA
通讯作者: SCARBOROUGH, GA
蒽环类药物与中性和酸性磷脂单独和二元混合物相互作用的扫描量热研究。
DOI: --
发表时间: 1986
期刊: The Journal of biological chemistry
影响因子: --
作者:
Constantinides,PP;Inouchi,N;Tritton,TR;Sartorelli,AC;Sturtevant,JM
通讯作者: Sturtevant,JM
DOI: --
发表时间: 1980
期刊:
影响因子: --
作者:
J. J. Kirkland;W. Yau;W. A. Doerner;J. W. Grant
通讯作者: J. W. Grant
脂质双层囊泡结构缺陷的形成和退火。
DOI: --
发表时间: 1976
期刊: Biochimica et Biophysica Acta
影响因子: --
作者:
R. Lawaczeck;M. Kainosho;S. Chan
通讯作者: S. Chan