Researchers found that a key fat-absorption protein (FATP4) drops by over 50% in the intestines of aging mice, which correlates with a 4% decline in fat digestibility. This molecular change may explain why older adults …
Researchers discovered that muscle stem cells age by boosting a survival gene (NDRG1) that extends their lifespan but cripples their ability to repair muscle after injury. This represents a cellular trade-off: living longer at the …
Researchers discovered that oxygen-starved endometrial cancer cells produce excess lactate, which they feed to immune cells (macrophages) to reprogram them into cancer-promoting phenotypes. This happens via a molecular switch involving DNA methyltransferase and pH regulation, …
Researchers discovered that telomerase doesn't just work on the finished ends of chromosomes—it also repairs breaks that happen *during* DNA replication at chromosome tips, and does so much more frequently than previously thought. This challenges …
This study reveals how a fungus (Neurospora crassa) uses two cellular signaling pathways to coordinate cell fusion—one pathway activates the machinery for building cellular structures, while the other aims that machinery at the right location. …
This study maps where cannabinoid type-1 receptors are located in the mouse visual cortex and found they're distributed differently in adolescence versus adulthood, particularly among specific types of inhibitory brain cells. The findings suggest the …
Researchers used advanced imaging and mass spectrometry to map how insulin receptors behave in muscle cells, discovering they travel via two different cellular pathways—one involving caveolin and one involving clathrin. This fundamental understanding of insulin …
Researchers discovered that a protein called LHX1 silences STING, a cellular alarm system that triggers senescence (aging) and tumor suppression in head and neck cancer cells. Disrupting LHX1 reactivates this alarm, causing cancer cells to …
Researchers found that a protein called TFAM, which manages mitochondria in regulatory T cells (immune cells that calm inflammation), is critical for preventing age-related systemic inflammation and physical decline. When mitochondrial function deteriorates in these …
This is a ornithological ecology study about where Black Woodpeckers excavate cavities in French forests—it has no relevance to human aging, lifespan, or longevity research. The analysis examined landscape and forest composition factors across three …
Researchers found that a protein called TIMP2 is overproduced after acute kidney injury and actively drives the transition to chronic kidney disease by promoting cell aging and scarring. Deleting TIMP2 in kidney tubule cells in …
Researchers grew human pluripotent stem cells on circular patterns and watched them spontaneously organize into distinct midbrain and hindbrain regions—without being explicitly programmed to do so. This self-organizing system could help screen for birth defects …
Researchers discovered that LRRK2, a protein linked to Parkinson's disease, plays a critical role in strengthening connections between neurons by reorganizing the cellular skeleton in response to brain growth signals. This work identifies synaptic dysfunction—not …
This study identifies why immune cells (NK cells) from older adults become ineffective at removing senescent fibroblasts—harmful aging cells that accumulate in tissues. The culprit is overactivity of a protein called Cdc42, which disrupts the …
Researchers discovered that aging cells shed large fragments containing damaged organelles through a process that keeps the cells alive but deposits cellular debris that activates cancer and wound-healing programs. This reveals a double-edged mechanism: senescent …