The homeobox gene, dmbx1a, is required for the development and maintenance of bipolar and photoreceptor cells in the zebrafish retina
Bibliographic record
Abstract
Retinal neurogenesis at early postembryonic stages is conserved among vertebrates for its role in homeostatic tissue growth and its dysfunction in humans may partially account for diseases of retinal growth or other retinal dystrophies. However, the molecular mechanisms underlying neurogenic growth of the postembryonic retina are poorly characterized. We report a novel role for the homeobox gene dmbx1a in tissue growth, survival of differentiated cells, bipolar differentiation, and photoreceptor maintenance in the postembryonic zebrafish retina. Specifically, dmbx1a mutants exhibited reduced eye size over time, increased cell death in differentiated cells derived from progenitor cells of the central retina and ciliary marginal zone, and age- and light-dependent photoreceptor dysmorphism. By examining the early changes in the retinal transcriptome of dmbx1a mutants, we were able to determine changes in gene expression that are associated with the observed retinal defects. Among this transcriptomic data, there is evidence to suggest that dmbx1 affects known retinal-associated genes implicated in retinal degenerative conditions and ocular impairments, with a particular emphasis on ciliogenesis factors important for outer segment growth in photoreceptors. • The conserved homeobox gene Dmbx1 is required for postembryonic retinal growth in zebrafish • Dmbx1 loss of function is associated with defects in bipolar cell and photoreceptor differentiation and survival • Dmbx1 is an upstream regulator of ciliogenesis genes that are important for photoreceptor development and function
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How this classification was reachedexpand
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 | 0.001 | 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 | 0.000 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".