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过氧化物酶体缺乏症患者培养成纤维细胞中过氧化物酶体的超微结构和细胞化学显示

Ultrastructural and cytochemical demonstration of peroxisomes in cultured fibroblasts from patients with peroxisomal deficiency disorders.

作者信息

Arias J A, Moser A B, Goldfischer S L

出版信息

J Cell Biol. 1985 May;100(5):1789-92. doi: 10.1083/jcb.100.5.1789.

Abstract

The oxidation of very long chain fatty acids and synthesis of ether glycerolipids (plasmalogens) occurs mainly in peroxisomes. Zellweger's cerebrohepatorenal syndrome (CHRS) is a rare, inherited metabolic disease characterized by an apparent absence of peroxisomes, an accumulation of very long chain fatty acids, and a decrease of plasmalogens in tissues and cultured fibroblasts from these patients. As peroxisomes are ubiquitous in mammalian cells, we examined normal and CHRS-cultured fibroblasts for their presence, using an electron microscopic histochemical procedure for the subcellular localization of catalase, a peroxisomal marker enzyme. Small (0.08-0.20 micron) round or slightly oval peroxisomes were seen in both normal and CHRS fibroblasts. The number of peroxisomes was analyzed morphometrically and found to be significantly reduced in all CHRS cell lines. These results are discussed in relation to the underlying defect in peroxisomal function and biogenesis in this disease.

摘要

极长链脂肪酸的氧化和醚甘油脂质(缩醛磷脂)的合成主要发生在过氧化物酶体中。泽尔韦格脑肝肾综合征(CHRS)是一种罕见的遗传性代谢疾病,其特征是明显缺乏过氧化物酶体、极长链脂肪酸积累以及这些患者的组织和培养成纤维细胞中缩醛磷脂减少。由于过氧化物酶体在哺乳动物细胞中普遍存在,我们使用一种用于过氧化氢酶(一种过氧化物酶体标记酶)亚细胞定位的电子显微镜组织化学方法,检查了正常和成纤维细胞培养的CHRS细胞中过氧化物酶体的存在情况。在正常和成纤维细胞培养的CHRS细胞中均可见小(0.08 - 0.20微米)的圆形或略椭圆形过氧化物酶体。通过形态计量学分析过氧化物酶体的数量,发现所有CHRS细胞系中的过氧化物酶体数量均显著减少。本文结合该疾病过氧化物酶体功能和生物发生的潜在缺陷对这些结果进行了讨论。

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