Synthetic cytotoxicity profiling of cohesin mutants highlights recombination-based dependencies
Bibliographic record
Abstract
Cohesin maintains genome integrity through its ability to bind and link DNA molecules via a Structural Maintenance of Chromatin (SMC) activity. These effects are manifested through its major function in sister chromatid cohesion, but also through activities during DNA replication, repair, and transcription. The array of cohesin functions can make interpreting cellular effects of cohesin loss difficult to interpret mechanistically. This is particularly important in cancer where cohesin subunit mutations are common, and where the identification of genetic dependencies would be useful for predicting the response of cohesin-mutated cells to genotoxic challenges. Here we performed a series of synthetic cytotoxicity screens with hypomorphic cohesin alleles in yeast to identify cellular pathways whose loss sensitizes cohesin-mutants to sublethal levels of genotoxic DNA damage. This dataset reveals important roles for cohesin in replication stress and homologous recombination regulation that can leave cohesin mutated cells with a dependency on translesion synthesis for survival.
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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".