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有朋友给我发来了新消息，大意是这样：弗罗里达的一个研究机构发表了一项最新的研究，注射一种蛋白质，可以把细胞代谢过程中因缺少最后一步而导致细胞分裂变成癌细胞的细胞停止分裂，目前只是在实验室里测试在人类细胞中，应用于乳癌，膀胱癌和肺癌。原文是英文：For the first time, scientists have turned aggressive breast, bladder and lung cancer cells into harmless, benign cells with a simple intervention.

The breakthrough technique published by researchers at the Mayo Clinic in Florida can program cancer cells to grow normally—instead of multiplying excessively and forming dangerous growths.

Quartz explains how it works: Most cells in your body are slowly replaced by new cells through the process of cell division. Hundreds of things need to go just right for this process to work. The final step is to instruct the cell to stop dividing.

In cancer cells, the final step is missed, and that is what results in a tumor. The Mayo Clinic researchers found that the final step is regulated by biological processors called microRNAs. These instruct the cell to make a protein which, in just the right amount, stops cell division.

In cancer cells, the protein amount isn't right. When the researchers injected microRNAs into cancer cells, the levels of the protein were restored and abnormal growth stopped.

The Florida researchers said it was like applying the brakes to a speeding car.

So far it has only been tested on human cells in the lab, but the technique could one day be used to target tumours so that cancer could be “switched off” without the need for harsh chemotherapy.

Cancer cells turned normal again