Multi-target siRNA based on DNMT3A/B homologous conserved region influences cell cycle and apoptosis of human prostate cancer cell line TSU-PR1.

Multi-target siRNA based on DNMT3A/B homologous conserved region influences cell cycle and apoptosis of human prostate cancer cell line TSU-PR1.
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基于DNMT3A/B同源保守区的多靶点siRNA影响人前列腺癌细胞系TSU-PR1的细胞周期和凋亡

DOI:
10.1590/s1415-47572012005000021
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发表时间:
2012-01
影响因子:
2.1
通讯作者:
He DL
He DL
中科院分区:
生物学4区
文献类型:
--
作者:
Du YF;Liang L;Shi Y;Long QZ;Zeng J;Wang XY;He DL

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基因组异常高甲基化参与前列腺癌的发生和发展。前列腺癌细胞高度表达 DNA 甲基转移酶 3 (DMNT3) 家族基因,这对于维持基因组甲基化至关重要。本研究基于DNMT3家族同源区域设计多靶点siRNA,用于体外研究其对TSU-PR1前列腺癌细胞增殖、迁移和侵袭的影响。通过 DNMT3A/B 或仅沉默 DNMT3B 造成的细胞周期紊乱是部分有效的,且不影响细胞凋亡。 DNMT3A 沉默对改变 TSU-PR1 细胞生物学行为完全没有影响。因此,DNMT3B 显然在维持前列腺癌细胞的不利行为中发挥着关键作用,从而暗示其作为有希望的治疗靶点的潜在意义,而 DNMT3A 只是起到辅助作用。
Abnormal genome hypermethylation participates in the tumorigenesis and development of prostate cancer. Prostate cancer cells highly express DNA methyltransferase 3 (DMNT3) family genes, essential for maintaining genome methylation. In the present study, multi-target siRNA, based on the homologous region of the DNMT3 family, was designed for the in vitro investigation of its effects on the proliferation, migration, and invasion of TSU-PR1 prostate cancer cells. The consequential cell-cycle derangement, through DNMT3A/B or only DNMT3B silencing, was partially efficient, without affecting apoptosis. DNMT3A silencing had absolutely no effect on changing TSU-PR1 cell biological behavior. Hence, DNMT3B alone apparently plays a key role in maintaining the unfavorable behavior of prostate-cancer cells, thereby implying its potential significance as a promising therapeutic target, with DNMT3A simply in the role of helper.
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