Immune-related GTPase M (IRGM1) regulates neuronal autophagy in a mouse model of stroke
Why this work is in the frame
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Bibliographic record
Abstract
Autophagy is an important cellular recycling mechanism through self-digestion in responses to cellular stress such as starvation. Studies have shown that autophagy is involved in maintaining the homeostasis of the neural system during stroke. However, molecular mechanisms underlying neuronal autophagy in ischemic stroke remain poorly understood. Previously, we and others have shown that immune-related GTPase M (IRGM; termed IRGM1 in the mouse nomenclature) can regulate the survival of immune cells through autophagy in response to infections and autoimmune conditions. Here, using a permanent middle cerebral artery occlusion (pMCAO) mouse model, we found that IRGM1 was upregulated in the ischemic side of the brain, which was accompanied by a significant autophagic response. In contrast, neuronal autophagy was almost complete lost in Irgm1 knockout (KO) mice after pMCAO induction. In addition, the infarct volume in the Irgm1-KO pMCAO mice was significantly increased as compared to wild-type mice. Histological studies suggested that, at the early stage (within 24 h) of ischemia, the IRGM1-dependent autophagic response is associated with a protection of neurons from necrosis in the ischemic core but a promotion of neuronal apoptosis in the penumbra area. These data demonstrate a novel role of IRGM1 in regulating neuronal autophagy and survival during ischemic stroke.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it