Ubiquitin E3 Ligase A20 Contributes to Maintaining Epithelial Barrier Function
Bibliographic record
Abstract
BACKGROUND AND AIMS: Epithelial barrier dysfunction is involved in the pathogenesis of allergic diseases; the mechanism is to be further understood. Ubiquitin E3 ligase A20 (A20) plays a role in maintaining the homeostasis in the body. This study aims to investigate the role of A20 in maintaining the epithelial barrier function. METHODS: Human intestinal epithelial cell line, Caco-2 cells, was cultured to monolayers to test the endocytosis and degradation of a model allergen, ovalbumin (OVA). The role of A20 in the endosome/lysosome fusion in epithelial cells was tested with A20-sufficient and A20-deficient Caco-2 cells and visualized by immunocytochemistry. RESULTS: Caco-2 cells could endocytose exogenous allergens (OVA) in culture. The endocytic OVA was degraded in A20-sufficient Caco-2 cells via the mechanism of endosome/lysosome fusion, while the A20-deficient Caco-2 monolayers converted the OVA to the basal compartment of transwells, which conserved the antigenicity reflected by that it induced T cell proliferation in an allergen-specific manner. A20 was required in the fusion of endosomes and lysosomes. CONCLUSION: A20 contributes to maintaining the epithelial barrier 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 | 0.000 | 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 | 0.000 |
| 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".