Subtype‐specific oligodendrocyte dynamics in organotypic culture
Bibliographic record
Abstract
The morphogenesis of oligodendrocytes is essential for central nervous system myelin formation and the rapid propagation of axon potentials through saltatory conduction. However, the discrete cellular events involved in the three-dimensional maturation of oligodendrocytes remain to be fully described. To address this, we followed the developmental stages of oligodendrocytes in mouse organotypic hippocampal slice cultures for 7-60 days using viral-mediated gene delivery of membrane-targeted fluorescent proteins. Using static and time-lapse confocal imaging, we find that postmigratory NG2-expressing cells exhibit slow anatomical reorganization over the course of hours. This is in direct contrast to oligodendrocytes that take on a promyelinating and transitional phenotype, which display a more complex morphology and undergo dramatic actin-dependent structural remodeling over just minutes. More mature myelinating oligodendrocytes, which have pruned most of their processes, still retain some local remodeling behavior at developing internodes, but in general, revert to a relatively stable state. Our findings provide a detailed characterization of cellular events that help shape oligodendrocyte morphology and likely participate in neuron-glial cell interactions and the process of myelination.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.003 |
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".