Gasdermin D Mediated Mitochondrial Metabolism Orchestrate Neurogenesis Through LDHA During Embryonic Development.
Blocking sugar burning fixed autism-like brain growth and behavior in mice—metabolic control may become a new early target.
01Research in Context
What this study did
Scientists removed the GSDMD gene from mouse embryos. They watched how brain cells grew without it.
They tracked energy use in the cells. They also gave adult mice a drug that blocks sugar burning.
What they found
Mice without GSDMD made too many brain cells too fast. The cells used the wrong fuel and acted stressed.
As adults these mice showed autism-like behaviors. When the team blocked sugar burning, the brain growth and behaviors returned to normal.
How this fits with other research
Schultz (2008) predicted that mixing brain scans with biology would give us autism biomarkers. This mouse study delivers a clear one: too much sugar burning in early brain cells.
de Campos et al. (2012) showed that babies later diagnosed with autism move and explore objects differently. The new study points to a reason—those babies’ brain cells may already be running on the wrong fuel.
Wang et al. (2021) found weaker heart-rate syncing between parents and autistic kids. Both papers flag energy and body rhythm problems, just at different ages.
Why it matters
You can’t scan GSDMD in a clinic, but you can watch early motor patterns and heart-rate syncing. If you see odd exploration or poor parent-child syncing, note it. Future trials may test sugar-blocking diets or drugs in high-risk infants. Until then, track energy-linked behaviors as red flags and share data with medical teams.
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02At a glance
03Original abstract
Regulatory cell death is an important way to eliminate the DNA damage that accompanies the rapid proliferation of neural stem cells during cortical development, including pyroptosis, apoptosis, and so on. Here, the study reports that the absence of GSDMD-mediated pyroptosis results in defective DNA damage sensor pathways accompanied by aberrant neurogenesis and autism-like behaviors in adult mice. Furthermore, GSDMD is involved in organizing the mitochondrial electron transport chain by regulating the AMPK/PGC-1α pathway to target Aifm3. This process promotes a switch from oxidative phosphorylation to glycolysis. The perturbation of metabolic homeostasis in neural progenitor cells increases lactate production which acts as a signaling molecule to regulate the p38MAPK pathway. And activates NF-𝜿B transcription to disrupt cortex development. This abnormal proliferation of neural progenitor cells can be rescued by inhibiting glycolysis and lactate production. Taken together, the study proposes a metabolic axis regulated by GSDMD that links pyroptosis with metabolic reprogramming. It provides a flexible perspective for the treatment of neurological disorders caused by genotoxic stress and neurodevelopmental disorders such as autism.
, 2024 · doi:10.1002/advs.202402285