Ciliated epithelial cell differentiation at air–liquid interface and respiratory syncytial virus infection using animal-free media and substrates
Bibliographic record
Abstract
Background: Animal-derived components in cell culture, such as fetal bovine serum and extracellular matrix proteins, pose ethical concerns and contribute to variability in experimental outcomes. This study explores the use of animal-free cell culture media and substrates to support the growth and differentiation of primary human bronchial epithelial cells, as well as their infection by respiratory syncytial virus (RSV). Methods: We evaluated the performance of jellyfish collagen 0 and recombinant extracellular matrix proteins as alternatives to traditional mammalian substrates. Additionally, we assessed the use of animal-free medium and human serum (HS) in viral propagation using HEp2 cells. Results: The use of animal-free medium, matrix proteins and HS can support primary epithelial cell growth and differentiation with high levels of ciliation and barrier integrity. RSV propagation in animal-free medium produced an increase in viral titres, indicating the potential of these systems for antiviral research. Conclusion: Transitioning to include more animal-free medium and substrates for primary cell culture and viral propagation will help improve the ethical standing of research and offer more human-relevant models for studying viral diseases in the future.
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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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.002 |
| Research integrity | 0.000 | 0.001 |
| 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".