Key Highlights
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A new study shows that cancer treatments can cause lasting genetic changes in a patient’s healthy tissues, and these changes can be shaped by natural selection. This is important because it reveals a hidden, long-term effect of therapy that could influence a patient’s future health risks, including the development of new cancers.
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Researchers used a new technique to silence specific copies of chromosome 21 in cells from a person with Down syndrome, revealing that small genetic differences (polymorphisms) can control whether a gene is turned on or off. This finding is significant because it shows that simply having an extra copy of a gene doesn’t always mean it’s more active, which changes our understanding of genetic disorders and how genes are regulated in everyone.
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Scientists have developed a new tool called TRAMPO that uses the 3D structure of mitochondrial proteins to build better evolutionary family trees. This matters because it provides a clearer picture of how species are related by accounting for the fact that different parts of a protein evolve at different rates, leading to more accurate reconstructions of life’s history.
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A CRISPR screen identified a specific protein, NLRX1, as a critical switch that triggers a deadly process in mitochondria called the permeability transition. This discovery is crucial for understanding heart attacks and strokes, where this mitochondrial process causes cell death, and could lead to new drugs to protect cells from damage.
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