Rational design of platinum chemotherapeutic drugs: hydrophobicity increases cytotoxicity.
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
BACKGROUND: Malignant glioma are often resistant to cisplatin. Numerous chemical modifications have been made to overcome this limitation. Analyzing such novel compounds, we previously hypothesized, that hydrophobicity improves the cytotoxicity of NH3 substituted platinum agents. MATERIALS AND METHODS: Testing this hypothesis, we synthesized further eight novel platinum agents, substituting the NH3 groups with various pyridyl ring systems. The cytotoxicity was measured in MTT tests using the cisplatin resistant human U25 1 malignant glioma cell line as a model. Solubility was measured in water using flameless atomic absorption spectroscopy. RESULTS: Cytotoxicity correlated significantly with low water solubility. The relation of cells surviving 72-hours of 1 OuM drug exposure was best described by a logarithmic formula: Surviving cells (% of control) = 6.4 + 38.4 log (water solubility in mg Pt/L) Adding an oximgroup to the aromatic substitute decreased cytotoxicity. CONCLUSIONS: These data confirmed that increased hydophobicity increases cytotoxicity in this group. This might be caused by better cellular penetration, or by shielding of DNA-adducts from repair processes. The data created a further hypothesis: A positive mesomeric effect as characteristic for the oxim-group might decrease DNA binding, a negative mesomeric might improve it.
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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