Secretion of chondroitin sulfate from embryonic epidermal cells in Xenopus laevis.

Secretion of chondroitin sulfate from embryonic epidermal cells in Xenopus laevis.
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非洲爪蟾胚胎表皮细胞分泌硫酸软骨素。

DOI:
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发表时间:
1993
影响因子:
3.2
通讯作者:
F. Sasaki
F. Sasaki
中科院分区:
生物学3区
文献类型:
--
作者:
S. Nishikawa;F. Sasaki

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我们用免疫荧光显微镜检测了两栖动物表皮细胞中的蛋白多糖(PG)。用包埋前后的免疫电子显微镜结合HRP或金标记的二抗,揭示了糖胺聚糖(GAG)的超微结构定位。非洲爪哇胚胎表皮分泌颗粒含有6-硫酸软骨素和未硫酸软骨素。未成熟的分泌物颗粒还用抗软骨素、6-硫酸软骨素和抗软骨素标记。对软骨素酶ABC的分步消化实验表明,分泌物颗粒中的细丝为硫酸软骨素链。灯盏花素A的抑制实验表明,分泌颗粒的寿命为5-10小时,这表明胚胎表皮的GAG分泌是通过调节的途径进行的。
We examined proteoglycans (PGs) in amphibian epidermal cells by immunofluorescence microscopy. Immunoelectron microscopy with pre- and post-embedding methods, combined with HRP- or gold-conjugated secondary antibody, revealed ultrastructural localization of glycosaminoglycans (GAGs). Embryonic epidermis secretion granules in Xenopus laevis contained chondroitin 6-sulfate and unsulfated chondroitin. Immature secretion granules were also labeled with anti-chondroitin 6-sulfate and anti-chondroitin. A step-wise digestion experiment on chondroitinase ABC revealed that fine filaments in the secretion granules were chondroitin sulfate chains. Inhibition experiments with brefeldin A revealed that the life of a secretion granule was 5-10 hr, suggesting that GAG secretion from embryonic epidermis is routed through a regulated pathway.
DOI: --
发表时间: 1991
期刊: The Journal of biological chemistry
影响因子: --
作者:
Sugumaran,G;Silbert,JE
通讯作者: Silbert,JE
DOI: --
发表时间: 1985
期刊: Federation proceedings
影响因子: --
作者:
Caterson,B;Christner,JE;Baker,JR;Couchman,JR
通讯作者: Couchman,JR