Thymol antifungal mode of action involves telomerase inhibition
Why this work is in the frame
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Bibliographic record
Abstract
The antifungal mode of action of thymol was investigated by a chemical-genetic profile analysis. Growth of each of ~4700 haploid Saccharomyces cerevisiae gene deletion mutants was monitored on medium with a subinhibitory concentration (50 μg/ml) of thymol and compared to growth on non-thymol control medium. This analysis revealed that, of the 76 deletion mutants with the greatest degree of susceptibility to thymol, 29% had deletions in genes involved in telomere length maintenance. A telomere restriction fragment (TRF) length assay showed that yeast exposed to a subinhibitory concentration of thymol for 15 days had telomere size reductions of 13-20% compared to non-thymol controls. By accelerating telomere shortening, thymol may increase the rate of cell senescence and apoptosis. Furthermore, real-time RT-PCR analysis revealed approximately two-fold reductions in EST2 mRNA but no change in TLC1 RNA in thymol-treated S. cerevisiae relative to untreated cells. EST2 encodes the essential reverse transcriptase subunit of telomerase that uses TLC1 RNA as a template during addition of TG(1-3) repeats to maintain telomere ends. This study provides compelling evidence that a primary mode of thymol antifungal activity is through inhibition of transcription of EST2 and thus telomerase activity.
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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) | 0.001 | 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