Science
Scientists discover lymph node-like immune hubs in mouse skull bone marrow
The structures responded to brain tumors in mice, though researchers caution that their functional existence in humans is not yet proven.
The short version
- Researchers have identified specialized immune structures resembling lymph nodes inside the bone marrow of mouse skulls that communicate directly with the brain.
- In mouse experiments, these localized hubs responded to brain tumors faster than distant neck lymph nodes, and disrupting them accelerated tumor growth.
- While similar immune cells were found in human skull marrow, scientists have not yet confirmed if they form equivalent functional structures in humans.
Key facts
- Researchers at Washington University School of Medicine in St. Louis discovered lymph node-like immune hubs in the bone marrow of mouse skulls that actively respond to brain threats.[Deutsche Welle]
- Disrupting these skull immune structures in mice with glioblastoma, an aggressive brain cancer, caused tumors to grow faster and shortened the animals' survival.[Deutsche Welle]
- Stimulating the skull marrow of mice with immune-boosting proteins helped the animals reject brain tumors more effectively and live longer.[Deutsche Welle]
- The study was published in the peer-reviewed journal Nature.[Deutsche Welle]
What remains uncertain
- It is not yet known whether these organized immune hubs exist or function the same way in humans, as only individual immune cells have been observed in human skull marrow so far.[Deutsche Welle]
- While neuroimmunologist Marco Prinz notes these structures could be important for brain tumors and infections, their potential role in neurodegenerative diseases like Alzheimer's and Parkinson's remains unproven.[Deutsche Welle]