Synthesis and degradation of basement membranes in benign and malignant salivary gland tumours. A study by in situ hybridization

Synthesis and degradation of basement membranes in benign and malignant salivary gland tumours. A study by in situ hybridization
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良性和恶性唾液腺肿瘤基底膜的合成和降解。

DOI:
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发表时间:
1993
影响因子:
7.3
通讯作者:
H. Autio–Harmainen
H. Autio–Harmainen
中科院分区:
医学1区
文献类型:
--
作者:
Y. Soini;H. Autio–Harmainen

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在本研究中,我们研究了一组恶性和良性唾液腺肿瘤中 72 kD 和 92 kD IV 型胶原酶、IV 型胶原的 al (IV) 链和层粘连蛋白 Bl 链 mRNA 的 mRNA 表达,并将结果与​​非肿瘤性唾液腺组织进行比较。虽然只有少数病例在肿瘤细胞中表达72 kD IV型胶原酶mRNA或IV型胶原mRNA的a1(IV)链,但在许多肿瘤的肿瘤细胞中可以看到92 kD IV型胶原酶和层粘连蛋白mRNA的合成。基质成纤维细胞或内皮细胞在不同程度上证明了所有这些蛋白质的 mRNA 合成,但沃辛肿瘤除外,在沃辛肿瘤中没有看到任何蛋白质的合成活性。由于在唾液腺的非肿瘤性上皮细胞中可以看到 92 kD IV 型胶原酶 mRNA 的信号,因此肿瘤细胞合成 92 kD IV 型胶原酶可以被视为唾液腺上皮细胞的固有特性。 72 kD 和 92 kD IV 型胶原酶的 mRNA 合成模式遵循在其他肿瘤中观察到的模式,其中基质细胞也主要合成 72 kD IV 型胶原酶,而上皮肿瘤细胞更容易表达 92 kD IV 型胶原酶 mRNA。恶性肿瘤合成 IV 型胶原酶已被认为对于侵袭和转移至关重要。两种胶原酶在良性肿瘤(例如多形性腺瘤)中的表达表明,唾液腺肿瘤的扩散和侵袭涉及更复杂的机制,例如酶活性调节的紊乱,而不仅仅是 72 kD 和 92 kD 胶原酶的合成。
In this study we investigated the mRNA expressions of 72 kD and 92 kD type IV collagenases, al (IV) chain of type IV collagen, and laminin Bl chain mRNAs in a set of malignant and benign salivary gland tumours and compared the results with non‐neoplastic salivary gland tissue. While only a few cases expressed 72 kD type IV collagenase mRNA or a1 (IV) chain of type IV collagen mRNA in tumour cells, 92 kD type IV collagenase and laminin mRNA synthesis could be seen in the neoplastic cells of many tumours. Stromal fibroblasts or endothelial cells demonstrated mRNA synthesis for all these proteins to a variable degree except for Warthin's tumours, in which no synthetic activity for any of the proteins could be seen. Since signals for 92 kD type IV collagenase mRNA could be seen in non‐neoplastic epithelial cells of the salivary gland, the synthesis of 92 kD type IV collagenase by tumour cells can be regarded as an intrinsic property of salivary gland epithelial cells. The pattern of mRNA synthesis for 72 kD and 92 kD type IV collagenases follows that observed in other tumours, in which the stromal cells also mainly synthesize 72 kD type IV collagenase while epithelial tumour cells more readily express 92 kD type IV collagenase mRNA. The synthesis of type IV collagenases by malignant tumours has been suggested to be of crucial importance for invasion and metastasis. The expression of both collagenases in benign tumours, such as pleomorphic adenomas, indicates that more complex mechanisms, such as disturbances in the regulation of enzyme activity, are involved in the spread and invasion of salivary gland tumours than merely the synthesis of 72 kD and 92 kD collagenases.
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DOI: --
发表时间: 1990
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影响因子: --
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发表时间: 1987-12-01
影响因子: 15.9
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DOI: --
发表时间: 1989
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影响因子: --
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