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骨肉瘤和骨纤维发育不良中单个胶原链的组成及翻译后修饰

Composition and posttranslational modification of individual collagen chains from osteosarcomas and osteofibrous dysplasias.

作者信息

Lehmann H W, Wolf E, Röser K, Bodo M, Delling G, Müller P K

机构信息

Institut of Medical Molecularbiology, University of Lübeck, Germany.

出版信息

J Cancer Res Clin Oncol. 1995;121(7):413-8. doi: 10.1007/BF01212948.

Abstract

The composition of collagen was analyzed and the degree of lysyl hydroxylation of individual collagen chains was determined in four osteosarcomas and two osteofibrous dysplasias. In addition, the tumor proliferation (number of mitoses, proliferating-nuclear-antigen-positive cells, MIB) as well as the response to chemotherapy (morphological regression grade) were checked. All tumors contained a high proportion of collagen III and, in all but one osteosarcoma, pepsin-extracted collagens I and III were overmodified. Furthermore, the proportion of diglycosides in collagen I was about four times higher than in controls. The collagen composition and modification resembled those of bones at early stages of human development. One osteosarcoma and both osteofibrous dysplasias were in the normal range of lysyl hydroxylation. There was no correlation between the collagen properties and the histopathological marker of tumor proliferation.

摘要

对4例骨肉瘤和2例骨纤维发育不良进行了胶原蛋白组成分析,并测定了各条胶原蛋白链的赖氨酰羟化程度。此外,还检查了肿瘤增殖情况(有丝分裂数、增殖细胞核抗原阳性细胞、MIB)以及对化疗的反应(形态学消退分级)。所有肿瘤均含有高比例的Ⅲ型胶原蛋白,除1例骨肉瘤外,其余所有肿瘤经胃蛋白酶提取的Ⅰ型和Ⅲ型胶原蛋白均过度修饰。此外,Ⅰ型胶原蛋白中二糖苷的比例比对照组高约四倍。胶原蛋白的组成和修饰类似于人类发育早期骨骼的情况。1例骨肉瘤和2例骨纤维发育不良的赖氨酰羟化处于正常范围内。胶原蛋白特性与肿瘤增殖的组织病理学标志物之间无相关性。

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