Key Highlights
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Immune cells can use gripping forces to move through tight spaces in 3D tissues, challenging the old idea that they only slide through without attachment. This discovery changes our understanding of how immune cells navigate the body to reach infection sites.
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A protein called Atg2 acts like a reversible bridge, transferring fats from the cell’s warehouse (the ER) to build the membrane of a recycling structure called an autophagosome. This shows how cells precisely control their internal fat supply to maintain health and respond to their environment.
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A detailed map of the aging mouse brain reveals that the 3D structure of DNA becomes more rigid and that “jumping genes” lose their chemical tags in a cell-specific way. This provides a crucial resource for understanding the molecular roots of brain aging and diseases like Alzheimer’s.
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Sponges evolved the ability to build glass skeletons by repurposing ancient transport proteins to handle high levels of silicon in ancient oceans. This evolutionary innovation, which happened multiple times independently, shows how life adapts to use available materials from the environment.
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Sea urchins can survive for decades in barren underwater deserts by dramatically slowing their metabolism, but can quickly ramp up eating and reproduction when food returns. This physiological resilience explains why these ecosystems can get stuck in a degraded state and struggle to recover.
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