Low‐protein medium affects the 293SF central metabolism during growth and infection with adenovirus
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
In this study the metabolism of 293SF cells grown in serum-free and low-protein medium was analyzed. This cell line is known for its ability to replicate recombinant adenovirus, mainly used in gene therapy applications. A complete model composed of the main glycolytic, glutaminolytic, and amino acids pathways, as well as the internalization fluxes of certain compounds into the mitochondria, is used for metabolic flux calculations. The pentose-phosphate cycle is also added to the biochemical reactions set and was independently measured with labeled 14C-glucose. Different feeding strategies in two different media were analyzed with the model, and the theoretical ATP production was also calculated. The two media were similar in their glucose and amino acid composition, but one contained BSA at 1g/L whereas the other had a very low protein content. Use of low-protein medium resulted in up to fourfold higher adenoviral vector production. In this medium, glucose utilization was more efficient, as it entered the TCA cycle more efficiently. Also, lower glutamine and amino acids consumption were observed as well as lower lactate and ammonia production. This increased TCA activity led to a twofold higher ATP production in the low-protein medium.
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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 | 0.000 |
| 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 it