Abstract 4747: Design and synthesis of a series highly potent and bioavailable FASN KR domain inhibitors for cancer
Notice bibliographique
Résumé
Abstract Fatty Acid Synthase (FASN) is a multi-domain protein that carries out de novo fatty acid (palmitate) synthesis from acetate and malonate in mammalian cells. FASN is up-regulated in cancer cells, providing fatty acid building blocks for rapid cell growth and cell division. Increased FASN expression is correlated with disease progression and poor prognosis in many cancers including prostate, breast, ovary, colon, and lung. FASN has been demonstrated to play an important role in carcinogenesis by protecting cells from apoptosis. Herein we report a new series of potent, selective and orally bioavailable FASN inhibitors. Recent publications disclose several FASN inhibitor chemotypes that share a common pharmacophore, wherein an aromatic group and an acylated cyclic amine are attached to a central scaffold. We postulated that a spirocyclic imidazolinone core would be an acceptable and drug-like scaffold, inspired by the precedent of irbesartan, an approved antihypertensive drug in which a spirocyclopentyl-imidazolinone core replaces the substituted imidazole ring of losartan, an older approved agent from the same drug class. This hypothesis led to a new spirocyclic imidazolinone based FASN inhibitors. Extensive SAR efforts resulted in FASN inhibitors with potent enzyme and cell activity, selectivity, and oral bioavailability exemplified by JNJ-54302833. JNJ-54302833 is a potent inhibitor of human FASN (IC50 = 28 nM) and also potently inhibits proliferation of A2780 ovarian cells (IC50 = 13 nM) in lipid-reduced medium. This cellular activity can be rescued by addition of palmitate, demonstrating on-target effects. JNJ-54302833 is also potent in many other cells, including PC3M (IC50 = 25 nM) and LnCaP-Vancouver prostate cells (IC50 = 66 nM), and is highly bioavailable (F 61%) with good exposures. In a pharmacodynamics study in H460 lung xenograft-bearing mice, oral treatment with JNJ-54302833 resulted in elevated tumor levels of malonyl-CoA and decreased tumor levels of palmitate. This novel series potently inhibits the FASN KR domain (IC50 = 54 nM for JNJ-54302833); specific binding to KR was confirmed by crystal structures.In summary, we have designed and discovered a new series of FASN inhibitors that are potent both in enzyme and in cell proliferation assays, are highly bioavailable, and bind to KR domain. Additionally, palmitate rescue of lipid-reduced cellular activity suggests selectivity and pharmacodynamics studies confirm target engagement. Citation Format: Tianbao Lu, Richard Alexander, Gilles Bignan, James Bischoff, Peter Connolly, Max Cummings, Sabine De Breucker, Norbert Esser, Erwin Fraiponts, Ron Gilissen, Bruce Grasberger, Boudewijn Janssens, Donald Ludovici, Lieven Meerpoel, Christophe Meyer, Michael Parker, Danielle Peeters, Carsten Schubert, Karine Smans, Luc Van Nuffel, Peter Vermeulen. Design and synthesis of a series highly potent and bioavailable FASN KR domain inhibitors for cancer. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 4747. doi:10.1158/1538-7445.AM2014-4747
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».