Identification of mRNAs that show modulated expression during colon carcinoma cell differentiation.

Identification of mRNAs that show modulated expression during colon carcinoma cell differentiation.
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鉴定在结肠癌细胞分化过程中表现出调节表达的 mRNA。

DOI:
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发表时间:
1995
期刊:
European Journal of Biochemistry
影响因子:
--
通讯作者:
Fred T. Bosman
Fred T. Bosman
中科院分区:
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文献类型:
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作者:
Nico Belzen;Michael P. G. Diesveld;Angelique C. J. Der Made;Yoshihiro Nozawa;W. Dinjens;R. Vlietstra;J. Trapman;Fred T. Bosman

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为了研究干细胞或其早期后代是肿瘤转化的主要靶标以及肿瘤保留未成熟表型的程度是肿瘤侵袭性的重要决定因素的工作假设,我们鉴定了几种在 HT29-D4 结肠癌细胞体外分化过程中下调的 mRNA。这些基因包括热休克同源蛋白 Hsc70、腺苷酸琥珀酸裂解酶、B23/核磷蛋白、α-微管蛋白和名为 DS-1 的新基因。 DS-1 mRNA 的长度约为 0.9 kb,分化时下调 4.7 倍。从DS-1 cDNA可以推导出206个氨基酸、分子量为24kDa、等电点为10.9的蛋白质。针对合成肽的抗血清在蛋白质印迹中检测到预期大小的次要带,以及可能代表蛋白质加工形式的较小大小的主要带。
To investigate the working hypotheses that stem cells or their early descendants are prime targets for neoplastic transformation, and that the degree to which a neoplasm retains the immature phenotype is an important determinant of tumor aggressiveness, we have identified several mRNAs that are downregulated during the in vitro differentiation of HT29-D4 colon carcinoma cells. These genes include heat-shock cognate protein Hsc70, adenylosuccinate lyase, B23/nucleophosmin, alpha-tubulin, and a novel gene designated DS-1. The DS-1 mRNA has a length of approximately 0.9 kb and is downregulated 4.7-fold upon differentiation. From the DS-1 cDNA, a protein of 206 amino acids with a molecular mass of 24 kDa and an isoelectric point of 10.9 can be deduced. An antiserum directed against a synthetic peptide detected a minor band of the expected size in Western blots, as well as a major band of lower size that may represent a processed form of the protein.
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