Once the defense mechanism is shut off, mRNA carrying the genes for cell reprogramming can be safely delivered.

只要关闭了这种自卫机制，能够重新编码细胞且携带遗传基因的信使RNA就能安全导入了。

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In 1998, scientists identified RNAi, a mechanism that primitive organisms use to detect and destroy virus's double-stranded RNA and any viral mRNA.

1998年，科学家发现了RNAi，这是一种原始生物用来检测和摧毁病毒的双链rna和任何携带病毒的mRNA的机制。

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It makes single-stranded copies of DNA’s genes, called mRNA, which tell the cell to produce proteins.

它可促使DNA基因单链复制，这被称作信使RNA（mRNA），它会传递信息给细胞产生蛋白质。

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Researchers from Washington University School of Medicine in St Louis looked at how a protein CUGBP2 interacted with the mRNA for Cox-2 in eight types of human cancer cells.

BBC: Protein 'makes cancer cells self-destruct'

But when the protein was attached to the mRNA for the Cox-2 enzyme, cancer cells could no longer make Cox-2, and they died, suggesting it plays a key role in tumour cell survival or death.

BBC: Protein 'makes cancer cells self-destruct'

These trigger the degradation of another type of RNA molecule known as messenger RNA (mRNA), "down-regulating" the gene.

BBC: NEWS | Science/Nature | Salvage prospect for 'junk' DNA