Aberrant expression of the PHF14 gene in biliary tract cancer cells.

Aberrant expression of the PHF14 gene in biliary tract cancer cells.
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DOI:
10.3892/ol.2013.1278
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发表时间:
2013-06
期刊:
影响因子:
2.9
通讯作者:
Yoshikawa T
Yoshikawa T
中科院分区:
医学4区
文献类型:
--
作者:
Akazawa T;Yasui K;Gen Y;Yamada N;Tomie A;Dohi O;Mitsuyoshi H;Yagi N;Itoh Y;Naito Y;Yoshikawa T

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使用高密度寡核苷酸微阵列研究人胆道癌 (BTC) 细胞系中的 DNA 拷贝数畸变。在 OZ 细胞系的染色体区域 7p21.3 处检测到新的纯合缺失。使用基因组 PCR 进行的进一步验证实验揭示了单个基因——植物同源域 (PHD) 指蛋白 14 (PHF14) 的纯合缺失。未检测到 PHF14 mRNA 或蛋白表达,从而证明 OZ 细胞系中不存在 PHF14 表达。尽管 PHD 指蛋白被认为参与染色质介导的转录调控,但人们对 PHF14 在癌症中的功能知之甚少。本研究观察到,使用小干扰 RNA (siRNA) 敲除 PHF14 可增强 BTC 细胞的生长。这些观察结果表明异常的 PHF14 表达可能在 BTC 的肿瘤发生中发挥作用。
DNA copy number aberrations in human biliary tract cancer (BTC) cell lines were investigated using a high-density oligonucleotide microarray. A novel homozygous deletion was detected at chromosomal region 7p21.3 in the OZ cell line. Further validation experiments using genomic PCR revealed a homozygous deletion of a single gene, plant homeodomain (PHD) finger protein 14 (PHF14). No PHF14 mRNA or protein expression was detected, thus demonstrating the absence of PHF14 expression in the OZ cell line. Although the PHD finger protein is considered to be involved in chromatin-mediated transcriptional regulation, little is known about the function of PHF14 in cancer. The present study observed that the knock down of PHF14 using small interfering RNA (siRNA) enhanced the growth of the BTC cells. These observations suggest that aberrant PHF14 expression may have a role in the tumorigenesis of BTC.
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