Key Highlights
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A protein called HES1, which naturally rises and falls in level over time, is required for dormant breast cancer cells to wake up and start dividing again. This finding is crucial because it identifies a potential target for preventing cancer relapse years after initial treatment.
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Inflammation in the gut recruits immune cells that rewire the intestinal nervous system, leading to long-lasting digestive problems even after the inflammation is gone. This discovery explains why some patients with inflammatory bowel disease continue to have motility issues and suggests new therapeutic strategies to protect gut nerves.
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Natural Killer (NK) immune cells use specific surface proteins, NKG2D and NKp30, to recognize and kill B cells infected with Epstein-Barr virus (EBV). This is significant because blocking a related “brake” protein (NKG2A) on these NK cells enhanced their killing power, pointing to a promising immunotherapy approach for EBV-linked cancers.
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Major viral epidemics like COVID-19 were not preceded by detectable natural selection for adaptation in the animal hosts they came from, challenging the common assumption that pandemics require prior viral evolution in a reservoir. In contrast, the 1977 re-emergence of H1N1 flu showed signs of selection linked to lab passage, highlighting different origins for major outbreaks.
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The ability of a fish’s muscle cells to produce energy (measured by mitochondrial function) predicts its social dominance and success in contests over food. This links cellular energy production directly to animal behavior and social hierarchy, showing how basic biochemistry can influence an individual’s place in the world.
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