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Regulation of parietal cell migration by gastrin in the mouse.

机译:胃泌素在小鼠中调节壁细胞的迁移。

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摘要

Recent studies suggest that gastrin regulates parietal cell maturation. We asked whether it also regulates parietal cell life span and migration along the gland. Dividing cells were labeled with 5'-bromo-2'-deoxyuridine (BrdU), and parietal cells were identified by staining with Dolichos biflorus lectin. Cells positive for D. biflorus lectin and BrdU were reliably identified 10-30 days after BrdU injection in mice in which the gastrin gene had been deleted by homologous recombination (Gas-KO) and wild-type (C57BL/6) mice. The time course of labeling was similar in the two groups. The distribution of BrdU-labeled parietal cells in wild-type mice was consistent with migration to the base of the gland, but in Gas-KO mice, a higher proportion of BrdU-labeled cells was found more superficially 20 and 30 days after BrdU injection. Conversely, in transgenic mice overexpressing gastrin, BrdU-labeled parietal cells accounted for a higher proportion of the labeled pool in the base of the gland 10 days after BrdUinjection. Gastrin, therefore, stimulates movement of parietal cells along the gland axis but does not influence their life span.
机译:最近的研究表明胃泌素调节壁细胞的成熟。我们询问它是否也调节壁细胞的寿命和沿腺体的迁移。用5'-bromo-2'-脱氧尿苷(BrdU)标记分裂细胞,并用Dolichos biflorus lectin染色鉴定壁细胞。在注射了BrdU的小鼠中,通过同源重组(Gas-KO)和野生型(C57BL / 6)删除了胃泌素基因的小鼠中,可靠地鉴定出双歧杆菌凝集素和BrdU阳性的细胞。两组的标记时间过程相似。 BrdU标记的壁细胞在野生型小鼠中的分布与向腺体的迁移一致,但在Gas-KO小鼠中,BrdU注射后20和30天的表面上发现更高比例的BrdU标记的细胞。相反,在过表达胃泌素的转基因小鼠中,BrdU注射后10天,BrdU标记的壁细胞在腺体底部占标记池中较高比例。因此,胃泌素刺激壁细胞沿腺轴运动,但不影响其寿命。

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