Loss of microglial TDP-43 caused myelin abnormalities and motor deficits in mice
Original source
Microglial TDP-43 mediates myelin refinement and represses Tyrobp cryptic exon inclusion in mice. (opens in a new tab)Compass summarised this from the study's abstract.
Study details
- Studied in
- Mouse
Related topics
Removing TDP-43 from microglia in mice caused early myelin abnormalities and later motor deficits. The change impaired microglia’s ability to clear myelin and disrupted Tyrobp messenger RNA, affecting TREM2-DAP12 signaling.
Why this matters
The findings identify a possible mechanism linking microglial TDP-43 loss to impaired myelin maintenance in mice. They do not yet change treatment for people with amyotrophic lateral sclerosis or establish that the same process occurs in humans.
Limitations and context
This was a mechanistic study in genetically modified mice, including early postnatal changes, not a clinical study in people with ALS. The findings still need to be tested in human disease and other models before their relevance to treatment is known.