Transformation of catecholaminergic precursors into glucagon (A) cells in mouse embryonic pancreas.

Transformation of catecholaminergic precursors into glucagon (A) cells in mouse embryonic pancreas.
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儿茶酚胺能前体转化为小鼠胚胎胰腺中的胰高血糖素 (A) 细胞。

DOI:
10.1073/pnas.78.8.5225
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发表时间:
1981
影响因子:
11.1
通讯作者:
Reis,DJ
Reis,DJ
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Teitelman,G;Joh,TH;Reis,DJ

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在胚胎小鼠中,儿茶酚胺生物合成酶酪氨酸羟化酶[L-酪氨酸,四氢蝶啶:氧氧化还原酶(3-羟基化),EC 1.14.16.2]可以在发育中的胰腺上皮索中的细胞群中进行免疫细胞化学可视化。这些胚胎的儿茶酚胺细胞,第一次看到的第11天,是大的,空泡化,并有一个折叠的核膜。一天后,在第12天,胰高血糖素首先在位置和形态与胚胎儿茶酚胺细胞相似的胰腺细胞中被免疫细胞化学检测到。通过使用用于检测同一细胞中的两种抗原的方法,在第12天和第14天之间,可以在10-40%的染色细胞中观察到羟化酶和胰高血糖素。从第14天开始,羟化酶染色的细胞数量减少;在第18天后无法检测到。相反,含有胰高血糖素的细胞在发育过程中增加,并在整个生命过程中持续存在。胚胎胰腺的内分泌细胞也含有多巴脱羧酶,但不含多巴胺-β-羟化酶或苯乙醇胺-N-甲基转移酶。在成年小鼠中,在胰岛中观察到含有酪氨酸羟化酶但在位置和形态上与胚胎儿茶酚胺能细胞不同的小细胞。成年的儿茶酚胺能细胞从不储存胰高血糖素。我们认为,成人胰高血糖素(A)的细胞产生的转化原位细胞,瞬时表达的儿茶酚胺能(可能是多巴胺能)表型。这些结果表明,一类肽能细胞可能产生的胺能前体的转化。
In embryonic mice, the catecholamine biosynthetic enzyme tyrosine hydroxylase [L-tyrosine, tetrahydropteridine:oxygen oxidoreductase (3-hydroxylating), EC 1.14.16.2] can be visualized immunocytochemically in a population of cells in epithelial cords of the developing pancreas. These embryonic catecholamine cells, first seen by day 11, are large and vacuolated and have a folded nuclear membrane. One day later, at day 12, glucagon is first detected immunocytochemically in pancreatic cells similar in location and morphology to the embryonic catecholamine cells. By use of a method for detecting both antigens in the same cell, both the hydroxylase and glucagon can be visualized between day 12 and day 14 in 10-40% of stained cells. From day 14, the number of cells stained for hydroxylase decreases; they cannot be detected after day 18. In contrast, the cells containing glucagon increase during development and persist throughout life. Endocrine cells of the embryonic pancreas also contain dopa decarboxylase but not dopamine-beta-hydroxylase or phenylethanolamine-N-methyl transferase. In adult mice, small cells containing tyrosine hydroxylase but differing in location and morphology from the embryonic catecholaminergic cells are seen in pancreatic islets. The adult catecholaminergic cells never store glucagon. We suggest that adult glucagon (A)-containing cells arise from transformation in situ of cells that transiently express a catecholaminergic (probably dopaminergic) phenotype. These results suggest that one class of peptidergic cells may arise from transformation of an aminergic precursor.
大脑和肠道中的肽
DOI: 10.1038/262092a0
发表时间: 1976
期刊: Nature
影响因子: 64.8
作者:
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通讯作者: A. Pearse
鸡胚内分泌胰腺和肠道中的 APUD 细胞。
DOI: 10.1016/0016-6480(75)90171-9
发表时间: 1975
影响因子: 2.7
作者:
A. Andrew
通讯作者: A. Andrew
肽和假定的递质在神经元中共存。
DOI: --
发表时间: 1980
期刊: Advances in biochemical psychopharmacology
影响因子: --
作者:
T. Hökfelt;Lundberg Jm;M. Schultzberg;O. Johansson;Å. Ljungdahl;J. Rehfeld
通讯作者: J. Rehfeld
DOI: --
发表时间: 1977
影响因子: 2.7
作者:
J. Fontaine;C. L. Le Lièvre;N. L. Le Douarin
通讯作者: N. L. Le Douarin