B5H7, a Morpholine Derivative of 23-Hydroxybetulinic Acid, Reverses Doxorubicin Resistance in HepG2/ADM
Why this work is in the frame
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Bibliographic record
Abstract
Multidrug resistance (MDR) is the major cause of the failure of cancer chemotherapy. Development of MDR reversers is an important strategy to improve the efficacy of cancer chemotherapy. Here, we have found a morpholine derivative of 23-hydroxybetulinic acid, B5H7, with a reversal effect on MDR cancer cells. Our studies showed that B5H7 enhanced cytotoxicity of doxorubicin, but no cisplatin in MDR cancer cells HepG2/ADM. And we found that B5H7 not only increased the intracellular accumulation of P-glycoprotein substrates doxorubicin and rhodamine123, but also reduced the efflux of rhodamine123 in HepG2/ADM cells. Further studies showed B5H7 did not alter the protein level of P-glycoprotein and it also had no effect on P-glycoprotein ATPase activity. Taken together, we have found that B5H7 could reverse doxorubicin resistance in HepG2/ADM cells by inhibiting the transport function of P-glycoprotein. These findings contribute to developing B5H7 as an adjuvant to anticancer chemotherapy with doxorubicin.
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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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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