News Neuroscience

Mitochondria can sneak DNA into the nuclei of brain cells

What these insertions mean for health is unclear

small transluscent orange tubular mitochondria are shown floating on a dark blue background

DNA from mitochondria (illustrated) has turned up in the nuclear genomes of brain cells. The implication for health is still unclear, but the insertions might be associated with life span, scientists say.

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By Claudia López Lloreda

Scientists have found DNA in the nucleus of brain cells, where it shouldn’t be. Bits of genes that typically reside in mitochondria insert themselves at unexpectedly high rates into brain cells’ nuclear genomes.