Microglia inhibition or depletion by treating organotypic cultures with minocycline or PLX3397 resulted in reduced levels of all the evaluated cytokines in the medium, confirming the role of microglia in the inflammatory microenvironment of glioblastoma. These findings provide valuable insights into how microglia interact with tumors and healthy cells in the tumor microenvironment, driving neuroinflammation and tumor cell dedifferentiation. This understanding could pave the way for the development of innovative therapies for glioblastoma.
P1, N=32, Completed, Memorial Sloan Kettering Cancer Center | Active, not recruiting --> Completed | Trial completion date: Jan 2026 --> Aug 2025 | Trial primary completion date: Jan 2026 --> Aug 2025
3 months ago
Trial completion • Trial completion date • Trial primary completion date
Specific depletion of microglia in aged mice, achieved by drinking water supplemented with the colony-stimulating factor 1 receptor (CSF1R)/c-Kit kinase inhibitor PLX3397 for seven consecutive days, resulted in a reduction of postoperative hippocampal neuroinflammation and a significant improvement in cognitive dysfunction. Similarly, perioperative inhibition of microglial activation with minocycline resulted in cognitive improvement...These findings suggest that the activation of hippocampal microglia and the associated neuroinflammatory response following surgery play a crucial role in PND. The underlying mechanism may be related to disturbed gamma oscillations and a reduction in the inhibitory function of PV interneurons.
We hypothesized that microglial depletion via PLX5622 (PLX), a colony-stimulating factor 1 receptor (CSFR1R) inhibitor, would exacerbate sleep disturbances and alter inflammatory profiles after TBI, and that microglial repopulation would ameliorate these effects...This study highlights the critical role of microglia in modulating post-TBI sleep and inflammation. Findings suggest differential effects of TBI on sleep depending on microglial depletion or repopulation status, with IL-6 serving as a marker of the inflammatory response in microglia-depleted conditions.