Effects of sequence of thioated oligonucleotides on cultured human mammary epithelial cells.

Effects of sequence of thioated oligonucleotides on cultured human mammary epithelial cells.
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硫代寡核苷酸序列对培养的人乳腺上皮细胞的影响。

DOI:
10.1089/ard.1993.3.67
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发表时间:
1993
期刊:
Antisense research and development
影响因子:
--
通讯作者:
Cohen,JS
Cohen,JS
中科院分区:
--
文献类型:
--
作者:
Yaswen,P;Stampfer,MR;Ghosh,K;Cohen,JS

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我们比较了许多不同的寡核苷酸对正常有限寿命和永生转化的人类乳腺上皮细胞的生长和形态的影响。最初选择用于研究的寡核苷酸序列是基于 NB-1 基因的寡核苷酸序列,该基因编码一种功能未知的钙调蛋白样蛋白。我们发现某些长度为15-20个残基的硫代寡核苷酸以浓度依赖性方式改变了正常细胞的形态并降低了生长速率。这些作用是快速的,在添加寡核苷酸后 24-48 小时内发生。这种效应在正常上皮细胞中最明显,在永生化上皮细胞中不太明显,在正常乳腺成纤维细胞中未观察到,但在没有伴随可检测到的 NB-1 mRNA 或蛋白质水平下降的情况下发生。具有混合的磷酸二酯和硫代磷酸酯主链或单独的磷酸二酯主链的相同序列对正常上皮细胞形态或生长几乎没有影响或没有影响。七分之二的硫代寡核苷酸与 NB-1 mRNA 不互补,在相似浓度 (10 μM) 下使用时也会影响正常上皮细胞形态和生长。总而言之,观察到的对正常上皮细胞的影响表明某些硫代寡核苷酸可能具有不依赖于其序列与已知mRNA的严格互补性的药理学后果。
We have compared the effects of a number of different oligonucleotides on the growth and morphology of normal finite life span and immortally transformed human mammary epithelial cells. The oligonucleotide sequences chosen initially for study were based on that of the NB-1 gene, which encodes a calmodulin-like protein of unknown function. We found that certain thioated oligonucleotides 15-20 residues in length altered the morphology and decreased the growth rate of the normal cells in a concentration-dependent manner. These effects were rapid, occurring within 24-48 h of oligonucleotide addition. The effects, which occurred without an accompanying detectable decrease in the levels of NB-1 mRNA or protein, were most pronounced in the normal epithelial cells, less apparent in the immortalized epithelial cells, and unobserved in normal breast fibroblasts. Identical sequences having mixed phosphodiester and phosphorothioate backbones, or phosphodiester backbones alone, had little or no effect on normal epithelial cell morphology or growth. Two out of seven additional thioated oligonucleotides which were not complementary to NB-1 mRNA, also affected normal epithelial cell morphology and growth when used at similar concentrations (10 μM). Taken together, the observed effects on normal epithelial cells indicate that certain thioated oligonucleotides may have pharmacological consequences that do not depend on strict complementarity of their sequences to known mRNAs.
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DOI: 10.1089/aid.1989.5.639
发表时间: 1989
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