Abstract 3731: Targeting the isocitrate dehydrogenase 1 (IDH1) metabolic enzyme in prostate cancer
Bibliographic record
Abstract
Abstract Prostate cancer cells (PCa) are dependent on the androgen receptor (AR) for their aberrant proliferation and survival. We have recently discovered that AR induces a reprogramming of PCa cell metabolism by controlling the cytoplasmic wild-type enzyme isocitrate dehydrogenase 1 (IDH1), which results in an enhanced proliferation of tumour cells. However, the specific metabolic functions of IDH1 in PCa or how to use the reliance of tumour cells on this enzyme as a therapeutic avenue, is elusive. In in vitro human PCa models, we showed that IDH1 protein levels and activity are increased in an AR-dependent manner. Using pharmacological and genetic tools, we showed that IDH1 is a major contributor to the replenishment of NADPH levels in PCa. This cofactor plays a key role in the synthesis of biomaterials required for cellular division, and our results indicate that IDH1 contribute to 30-40% of total cellular NADPH levels. In that context, blockade of IDH1 was shown to alter the mTOR signaling, a central regulator of cellular anabolism, which is linked to decreased cellular proliferation rates. FDA-approved pharmacological inhibitors of mutant IDH1 significantly inhibited IDH activity and proliferation in PCa cells, suggesting that such inhibitors could be used to treat PCa patients even in absence of IDH1 mutation. Globally, our results demonstrate that IDH1 is a key player in proliferative anabolic pathways in PCa. Importantly, they also support the hypothesis that inhibition of IDH1 using already-approved molecules represents one viable therapeutic solution. Citation Format: Kevin Gonthier, Cindy Weidmann, Lilianne Frégeau-Proulx, Étienne Audet-Walsh. Targeting the isocitrate dehydrogenase 1 (IDH1) metabolic enzyme in prostate cancer [abstract]. In: Proceedings of the Annual Meeting of the American Association for Cancer Research 2020; 2020 Apr 27-28 and Jun 22-24. Philadelphia (PA): AACR; Cancer Res 2020;80(16 Suppl):Abstract nr 3731.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.006 | 0.001 |
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".