Mitochondria are the power plants of cells, and they contain their own genetic material and RNA molecules. Scientists have now discovered that certain modifications in mitochondrial RNA boost the invasive spread of cancer cells by supporting protein synthesis in mitochondria. They have established that a specific gene expression signature correlating with high levels of mitochondrial RNA modifications is associated with metastasis and poor prognosis in patients with head and neck cancer. When the researchers blocked the responsible RNA modifying enzyme in cancer cells, the number of metastases was reduced. Certain antibiotics that suppress protein synthesis in mitochondria were also able to prevent the invasive spread of cancer cells in laboratory experiments.
RNA modifications in mitochondria promote invasive spread of cancer
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The president faces pressure to shoot down the craft, but China denies it is being used to spy on the US.
The US president’s remark comes after China called for ‘calm’ over the balloon flying across the US.
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