Chromatin Modification and Senescence: Linkage by Tumor Suppressors?
Bibliographic record
Abstract
Senescence was originally defined as a state associated with cell cycle arrest that occurs after cells have undergone an intrinsically limited number of divisions in vitro. Much evidence indicates that senescence occurs as a consequence of the internal stress signal generated from shortening telomeres on the ends of chromosomes. However, more recently, various forms of extrinsic stresses have been shown to induce a markedly similar senescent phenotype that includes changes in chromatin structure and gene expression. Chromatin structure is subject to many forms of modification that affect transcription, gene silencing, cell proliferation, and senescence, much of which involves imposition of an epigenetic histone code. Several genes in the p53, Rb, and ING (inhibitor of growth) pathways affect cell senescence and are capable of regulating gene expression through chromatin remodeling. This suggests that a link may exist between chromatin modification and cellular senescence through the activity of proteins typically defined as tumor suppressors.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.001 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.003 |
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 source (direct Gemma or distilled Codex), 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".