RESUMEN
We report on the discovery of the new clinical candidate BAY 1003803 as glucocorticoid receptor agonist for the topical treatment of psoriasis or severe atopic dermatitis. In the course of optimizing the amino alcohol series as a highly potent new non-steroidal lead structure, considerations were made as to how physicochemical properties and safety concerns relate to structural motifs. BAY 1003803 demonstrates strong anti-inflammatory activity in vitro paired with a pharmacokinetic profile suitable for topical application.
Asunto(s)
Antiinflamatorios no Esteroideos/farmacología , Descubrimiento de Drogas , Receptores de Glucocorticoides/agonistas , Animales , Antiinflamatorios no Esteroideos/síntesis química , Antiinflamatorios no Esteroideos/química , Perros , Relación Dosis-Respuesta a Droga , Femenino , Hepatocitos/efectos de los fármacos , Hepatocitos/metabolismo , Masculino , Estructura Molecular , Ratas , Receptores de Glucocorticoides/metabolismo , Relación Estructura-ActividadRESUMEN
Mutations in codon 132 of isocitrate dehydrogenase (IDH) 1 are frequent in diffuse glioma, acute myeloid leukemia, chondrosarcoma and intrahepatic cholangiocarcinoma. These mutations result in a neomorphic enzyme specificity which leads to a dramatic increase of intracellular D-2-hydroxyglutarate (2-HG) in tumor cells. Therefore, mutant IDH1 protein is a highly attractive target for inhibitory drugs. Here, we describe the development and properties of BAY 1436032, a pan-inhibitor of IDH1 protein with different codon 132 mutations. BAY 1436032 strongly reduces 2-HG levels in cells carrying IDH1-R132H, -R132C, -R132G, -R132S and -R132L mutations. Cells not carrying IDH mutations were unaffected. BAY 1436032 did not exhibit toxicity in vitro or in vivo. The pharmacokinetic properties of BAY 1436032 allow for oral administration. In two independent experiments, BAY 1436032 has been shown to significantly prolong survival of mice intracerebrally transplanted with human astrocytoma carrying the IDH1R132H mutation. In conclusion, we developed a pan-inhibitor targeting tumors with different IDH1R132 mutations.
Asunto(s)
Compuestos de Anilina/farmacología , Antineoplásicos/farmacología , Astrocitoma/tratamiento farmacológico , Bencimidazoles/farmacología , Neoplasias Encefálicas/tratamiento farmacológico , Isocitrato Deshidrogenasa/antagonistas & inhibidores , Isocitrato Deshidrogenasa/genética , Compuestos de Anilina/química , Compuestos de Anilina/farmacocinética , Compuestos de Anilina/toxicidad , Animales , Antineoplásicos/química , Antineoplásicos/farmacocinética , Antineoplásicos/toxicidad , Astrocitoma/enzimología , Astrocitoma/genética , Bencimidazoles/química , Bencimidazoles/farmacocinética , Bencimidazoles/toxicidad , Neoplasias Encefálicas/enzimología , Neoplasias Encefálicas/genética , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Supervivencia Celular/fisiología , Neoplasias del Colon/tratamiento farmacológico , Neoplasias del Colon/enzimología , Neoplasias del Colon/genética , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/farmacocinética , Inhibidores Enzimáticos/farmacología , Inhibidores Enzimáticos/toxicidad , Escherichia coli , Femenino , Glutaratos/metabolismo , Células HEK293 , Humanos , Isocitrato Deshidrogenasa/metabolismo , Ratones Endogámicos BALB C , Ratones Desnudos , Mutación , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo , Sarcoma/tratamiento farmacológico , Sarcoma/enzimología , Sarcoma/genética , Células Sf9 , Ensayos Antitumor por Modelo de XenoinjertoRESUMEN
We report on the discovery of two new lead series for the development of glucocorticoid receptor agonists. Firstly, the discovery of tetrahydronaphthalenes led to metabolically stable and dissociated compounds. Their binding mode to the glucocorticoid receptor could be elucidated through an X-ray structure. Closer inspection into the reaction path and analyses of side products revealed a new amino alcohol series also addressing the glucocorticoid receptor and demonstrating strong anti-inflammatory activity in vitro.
Asunto(s)
Antiinflamatorios/química , Receptores de Glucocorticoides/agonistas , Tetrahidronaftalenos/química , Amino Alcoholes/química , Antiinflamatorios/farmacocinética , Antiinflamatorios/farmacología , Sitios de Unión , Genes Reporteros , Semivida , Células HeLa , Humanos , Enlace de Hidrógeno , Concentración 50 Inhibidora , Microsomas Hepáticos/metabolismo , Simulación del Acoplamiento Molecular , Monocitos/citología , Monocitos/efectos de los fármacos , Monocitos/metabolismo , Unión Proteica , Receptores de Glucocorticoides/metabolismo , Relación Estructura-Actividad , Tetrahidronaftalenos/farmacocinética , Tetrahidronaftalenos/farmacología , Activación Transcripcional/efectos de los fármacosRESUMEN
The compound class of 1H-pyrazolo[3,4-d]pyrimidines was identified using HTS as very potent inhibitors of facilitated glucose transporter 1 (GLUT1). Extensive structure-activity relationship studies (SAR) of each ring system of the molecular framework was established revealing essential structural motives (i.e., ortho-methoxy substituted benzene, piperazine and pyrimidine). The selectivity against GLUT2 was excellent and initial in vitro and in vivo pharmacokinetic (PK) studies are encouraging.
Asunto(s)
Transportador de Glucosa de Tipo 1/antagonistas & inhibidores , Pirimidinas/química , Pirimidinas/farmacología , Animales , Línea Celular , Descubrimiento de Drogas , Transportador de Glucosa de Tipo 1/metabolismo , Humanos , Masculino , Pirimidinas/farmacocinética , Ratas Wistar , Relación Estructura-ActividadRESUMEN
A structure-based design approach led to the identification of a novel class of indazole ether based, non-steroidal glucocorticoid receptor (GR) modulators. Several examples were identified that displayed cell potency in the picomolar range, inhibiting LPS-induced TNF-α release by primary peripheral blood mononuclear cells (PBMCs). Additionally, an improved steroid hormone receptor binding selectivity profile, compared to classical steroidal GR agonists, was demonstrated. The indazole ether core tolerated a broad range of substituents allowing for modulation of the physiochemical parameters. A small sub-set of indazole ethers, with pharmacokinetic properties suitable for oral administration, was investigated in a rat antigen-induced joint inflammation model and demonstrated excellent anti-inflammatory efficacy.
Asunto(s)
Antiinflamatorios no Esteroideos/química , Antiinflamatorios no Esteroideos/farmacología , Indazoles/química , Indazoles/farmacología , Receptores de Glucocorticoides/inmunología , Animales , Antiinflamatorios no Esteroideos/farmacocinética , Antiinflamatorios no Esteroideos/uso terapéutico , Células Cultivadas , Éteres/química , Éteres/farmacocinética , Éteres/farmacología , Éteres/uso terapéutico , Humanos , Indazoles/farmacocinética , Indazoles/uso terapéutico , Inflamación/tratamiento farmacológico , Inflamación/inmunología , Articulaciones/efectos de los fármacos , Articulaciones/inmunología , Leucocitos Mononucleares/efectos de los fármacos , Leucocitos Mononucleares/inmunología , Simulación del Acoplamiento Molecular , Ratas , Receptores de Glucocorticoides/agonistas , Factor de Necrosis Tumoral alfa/inmunologíaRESUMEN
The branched-chain amino acid transaminases (BCATs) are enzymes that catalyze the first reaction of catabolism of the essential branched-chain amino acids to branched-chain keto acids to form glutamate. They are known to play a key role in different cancer types. Here, we report a new structural class of BCAT1/2 inhibitors, (trifluoromethyl)pyrimidinediones, identified by a high-throughput screening campaign and subsequent optimization guided by a series of X-ray crystal structures. Our potent dual BCAT1/2 inhibitor BAY-069 displays high cellular activity and very good selectivity. Along with a negative control (BAY-771), BAY-069 was donated as a chemical probe to the Structural Genomics Consortium.
Asunto(s)
Aminoácidos de Cadena Ramificada , Transaminasas , Transaminasas/metabolismo , Aminoácidos de Cadena Ramificada/metabolismo , Cetoácidos/metabolismoRESUMEN
Eukaryotes have evolved two major pathways to repair potentially lethal DNA double-strand breaks. Homologous recombination represents a precise, DNA-template-based mechanism available during the S and G2 cell cycle phase, whereas non-homologous end joining, which requires DNA-dependent protein kinase (DNA-PK), allows for fast, cell cycle-independent but less accurate DNA repair. Here, we report the discovery of BAY-8400, a novel selective inhibitor of DNA-PK. Starting from a triazoloquinoxaline, which had been identified as a hit from a screen for ataxia telangiectasia and Rad3-related protein (ATR) inhibitors with inhibitory activity against ATR, ATM, and DNA-PK, lead optimization efforts focusing on potency and selectivity led to the discovery of BAY-8400. In in vitro studies, BAY-8400 showed synergistic activity of DNA-PK inhibition with DNA damage-inducing targeted alpha therapy. Combination of PSMA-targeted thorium-227 conjugate BAY 2315497 treatment of human prostate tumor-bearing mice with BAY-8400 oral treatment increased antitumor efficacy, as compared to PSMA-targeted thorium-227 conjugate monotherapy.
Asunto(s)
Antineoplásicos/síntesis química , Antineoplásicos/farmacología , Proteína Quinasa Activada por ADN/metabolismo , Regulación de la Expresión Génica/efectos de los fármacos , Animales , Antineoplásicos/química , Línea Celular Tumoral , Proliferación Celular , Proteína Quinasa Activada por ADN/genética , Sinergismo Farmacológico , Quimioterapia Combinada , Hepatocitos/efectos de los fármacos , Humanos , Ratones , Estructura Molecular , Fosfatidilinositol 3-Quinasas/genética , Ratas , Relación Estructura-Actividad , Serina-Treonina Quinasas TOR/genética , Serina-Treonina Quinasas TOR/metabolismo , Ensayos Antitumor por Modelo de XenoinjertoRESUMEN
The dissociated glucocorticoid receptor (GR) agonist ZK 216348 is rendered GR-selective over other nuclear hormone receptors through replacing the methylbenzoxazine with a quinoline moiety. Compounds were shown to be efficacious in cell assays with respect to inflammation endpoints, along with reduced activity in a transactivation assay, hinting at an improved therapeutic window over corticosteroids.
Asunto(s)
Antiinflamatorios/química , Quinolinas/química , Receptores de Glucocorticoides/agonistas , Antiinflamatorios/síntesis química , Antiinflamatorios/farmacología , Línea Celular , Evaluación Preclínica de Medicamentos , Genes Reporteros/genética , Humanos , Quinolinas/síntesis química , Quinolinas/farmacología , Receptores de Glucocorticoides/metabolismo , Activación TranscripcionalRESUMEN
Lactate dehydrogenase A (LDHA) is frequently overexpressed in tumors, thereby sustaining high glycolysis rates, tumor growth, and chemoresistance. High-throughput screening resulted in the identification of phthalimide and dibenzofuran derivatives as novel lactate dehydrogenase inhibitors, selectively inhibiting the activity of the LDHA isoenzyme. Cocrystallization experiments confirmed target engagement in addition to demonstrating binding to a novel allosteric binding site present in all four LDHA subunits of the LDH5 homotetramer.
RESUMEN
Glucocorticoids are among the most successful therapies in the treatment of chronic inflammatory and autoimmune diseases. Their efficacy seems to be caused by the interference of the ligand-activated glucocorticoid receptor with many pro-inflammatory pathways via different mechanisms. The ubiquitous expression of the glucocorticoid receptor is a prerequisite for efficacy. Their main drawback, however, is due to their potential to induce adverse effects, in particular upon high dosage and prolonged usage. For the purpose reducing systemic side effects, topical glucocorticoids that act locally have been developed. Nevertheless, undesirable cutaneous effects such as skin atrophy persist from the use of topical glucocorticoids. Therefore a high medical need exists for drugs as effective as glucocorticoids but with a reduced side effect profile. Glucocorticoids function by binding to and activating the glucocorticoid receptor which positively or negatively regulates the expression of specific genes. Several experiments suggest that negative regulation of gene expression by the glucocorticoid receptor accounts for its anti-inflammatory action. This occurs through direct or indirect binding of the receptor to pro-inflammatory transcription factors that are already bound to their regulatory sites. The positive action of the receptor occurs through homodimer binding of the ligand receptor complex to discrete nucleotide sequences and this contributes to some of the adverse effects of the hormone. Glucocorticoid receptor ligands that promote the negative regulatory action of the receptor with reduced positive regulatory function should therefore show an improved therapeutic index. A complete separation of the positive from the negative regulatory activities of the receptor has so far not been possible because of the interdependent nature of the two regulatory processes. Nevertheless, recent understanding of the molecular mechanisms of the GR has triggered several drug discovery programs and these have led to the identification of dissociated GR-ligands. Such selective GR agonists (SEGRAs) are likely to enter clinical testing soon.
Asunto(s)
Glucocorticoides/uso terapéutico , Ligandos , Receptores de Glucocorticoides/agonistas , Animales , Regulación de la Expresión Génica/fisiología , Glucocorticoides/efectos adversos , Humanos , Inflamación/tratamiento farmacológico , Inflamación/fisiopatología , Activación Transcripcional/fisiologíaRESUMEN
A class of potent, nonsteroidal, selective indazole ether-based glucocorticoid receptor modulators (SGRMs) was developed for the inhaled treatment of respiratory diseases. Starting from an orally available compound with demonstrated anti-inflammatory activity in rat, a soft-drug strategy was implemented to ensure rapid elimination of drug candidates to minimize systemic GR activation. The first clinical candidate 1b (AZD5423) displayed a potent inhibition of lung edema in a rat model of allergic airway inflammation following dry powder inhalation combined with a moderate systemic GR-effect, assessed as thymic involution. Further optimization of inhaled drug properties provided a second, equally potent, candidate, 15m (AZD7594), that demonstrated an improved therapeutic ratio over the benchmark inhaled corticosteroid 3 (fluticasone propionate) and prolonged the inhibition of lung edema, indicating potential for once-daily treatment.
Asunto(s)
Acetamidas/uso terapéutico , Indazoles/uso terapéutico , Edema Pulmonar/tratamiento farmacológico , Receptores de Glucocorticoides/efectos de los fármacos , Administración por Inhalación , Anciano , Animales , Relación Dosis-Respuesta a Droga , Humanos , Espectrometría de Masas , Polvos , Espectroscopía de Protones por Resonancia Magnética , RatasRESUMEN
Despite the long-known fact that the facilitative glucose transporter GLUT1 is one of the key players safeguarding the increase in glucose consumption of many tumor entities even under conditions of normal oxygen supply (known as the Warburg effect), only few endeavors have been undertaken to find a GLUT1-selective small-molecule inhibitor. Because other transporters of the GLUT1 family are involved in crucial processes, these transporters should not be addressed by such an inhibitor. A high-throughput screen against a library of â¼3â million compounds was performed to find a small molecule with this challenging potency and selectivity profile. The N-(1H-pyrazol-4-yl)quinoline-4-carboxamides were identified as an excellent starting point for further compound optimization. After extensive structure-activity relationship explorations, single-digit nanomolar inhibitors with a selectivity factor of >100 against GLUT2, GLUT3, and GLUT4 were obtained. The most promising compound, BAY-876 [N4 -[1-(4-cyanobenzyl)-5-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]-7-fluoroquinoline-2,4-dicarboxamide], showed good metabolic stability inâ vitro and high oral bioavailability inâ vivo.
Asunto(s)
Transportador de Glucosa de Tipo 1/antagonistas & inhibidores , Pirazoles/farmacología , Quinolinas/farmacología , Administración Oral , Disponibilidad Biológica , Transportador de Glucosa de Tipo 1/metabolismo , Ensayos Analíticos de Alto Rendimiento , Humanos , Estructura Molecular , Pirazoles/administración & dosificación , Pirazoles/química , Quinolinas/administración & dosificación , Quinolinas/química , Relación Estructura-ActividadRESUMEN
Glucocorticoids are well known for their potent anti-inflammatory and immunosuppressive actions. However, due to their potential to induce serious undesired effects, there is a great need for compounds with a better therapeutic index. Recent discoveries have demonstrated that the positive and negative regulation of gene expression via the glucocorticoid receptor is mediated by different mechanisms. This regulation is predominantly responsible for either anti-inflammatory effects or certain side effects, depending on whether it is negative or positive. Compounds that preferentially induce transrepression rather than transactivation should be superior to classical glucocorticoids. Indeed, proof of concept has been recently achieved with such selective glucocorticoid receptor agonists.
Asunto(s)
Receptores de Glucocorticoides/agonistas , Receptores de Glucocorticoides/uso terapéutico , Animales , Regulación de la Expresión Génica/efectos de los fármacos , Regulación de la Expresión Génica/genética , Glucocorticoides/inmunología , Glucocorticoides/farmacología , Glucocorticoides/uso terapéutico , Humanos , Inflamación/prevención & controlRESUMEN
Since their introduction, the extraordinary importance of glucocorticoids in the treatment of inflammatory and autoimmune disorders is undisputed, despite their known undesirable side effects. In the 1990s, major scientific progress was made, with the discovery that positive and negative regulation of gene expression via the glucocorticoid receptor are mediated by different mechanisms. This discovery led to the assumption that it may be possible to dissociate the therapeutic effects of glucocorticoids from their side effects by using ligands which specifically or preferentially address one of the two pathways. Several pharmaceutical companies are currently pursuing this goal.
Asunto(s)
Glucocorticoides/farmacología , Receptores de Glucocorticoides/efectos de los fármacos , Receptores de Glucocorticoides/fisiología , Animales , Antiinflamatorios/efectos adversos , Antiinflamatorios/farmacología , Química Farmacéutica , Regulación de la Expresión Génica , Glucocorticoides/efectos adversos , Humanos , Inmunosupresores/efectos adversos , Inmunosupresores/farmacología , Ligandos , Receptores de Glucocorticoides/metabolismoRESUMEN
Glucocorticoids are highly effective in the therapy of inflammatory and autoimmune disorders. Their beneficial action is restricted because of their adverse effects upon prolonged usage. Topical glucocorticoids that act locally have been developed to significantly reduce systemic side effects. Nonetheless, undesirable cutaneous effects such as skin atrophy persist from the use of topical glucocorticoids. There is therefore a high medical need for drugs as effective as glucocorticoids but with a reduced side-effect profile. Glucocorticoids function by binding to and activating the glucocorticoid receptor that positively or negatively regulates the expression of specific genes. Several experiments suggest that the negative regulation of gene expression by the glucocorticoid receptor accounts for its anti-inflammatory action. This occurs through direct or indirect binding of the receptor to transcription factors such as activator protein-1, nuclear factor-kappaB or interferon regulatory factor-3 that are already bound to their regulatory sites. The positive action of the receptor occurs through homodimer binding of the receptor to discrete nucleotide sequences and this possibly contributes to some of the adverse effects of the hormone. Glucocorticoid receptor ligands that promote the negative regulatory action of the receptor with reduced positive regulatory function should therefore show improved therapeutic potential. A complete separation of the positive from the negative regulatory activities of the receptor has so far not been possible because of the interdependent nature of the two regulatory processes. Nevertheless, considerable improvement in the therapeutic action of glucocorticoid receptor ligands is being achieved through the use of key molecular targets for screening novel glucocorticoid receptor ligands.
Asunto(s)
Regulación de la Expresión Génica , Glucocorticoides/metabolismo , Receptores de Glucocorticoides/metabolismo , Animales , Antiinflamatorios/farmacología , Humanos , Ligandos , Modelos Biológicos , Modelos Químicos , Unión Proteica , Factores de Transcripción/metabolismo , Activación TranscripcionalRESUMEN
Fluorinated dihydroquinolines showed reduced basicity of the amidine function. Their syntheses and potencies as neuronal nitric oxide synthase (n-NOS) inhibitors are reported.
Asunto(s)
Amidinas/metabolismo , Inhibidores Enzimáticos/farmacología , Flúor/química , Óxido Nítrico Sintasa/antagonistas & inhibidores , Quinolinas/farmacología , Inhibidores Enzimáticos/química , Óxido Nítrico Sintasa de Tipo I , Quinolinas/química , Relación Estructura-ActividadRESUMEN
Dihydroquinolines with aminoalkyl side chains have been synthesized and have been shown to be potent n-NOS inhibitors. A marked selectivity versus e-NOS of up to approximately 300-fold was observed, whereas i-NOS was moderately inhibited.
Asunto(s)
Aminas/química , Óxido Nítrico Sintasa/antagonistas & inhibidores , Quinolinas/química , Quinolinas/farmacología , Inhibidores Enzimáticos/síntesis química , Inhibidores Enzimáticos/química , Inhibidores Enzimáticos/farmacología , Humanos , Concentración 50 Inhibidora , Óxido Nítrico Sintasa de Tipo I , Óxido Nítrico Sintasa de Tipo II , Óxido Nítrico Sintasa de Tipo III , Quinolinas/síntesis química , Proteínas Recombinantes/antagonistas & inhibidores , Valores de Referencia , Relación Estructura-ActividadRESUMEN
Dihydroquinolines have been synthesized and have been shown to be potent n-NOS inhibitors. Selectivity versus e-NOS was increased to approximately 100-fold through appropriate substitution at the benzene ring.
Asunto(s)
Inhibidores Enzimáticos/farmacología , Óxido Nítrico Sintasa/antagonistas & inhibidores , Quinolinas/farmacología , Inhibidores Enzimáticos/química , Óxido Nítrico Sintasa de Tipo I , Quinolinas/químicaRESUMEN
Glucocorticoids (GCs) are the most commonly used antiinflammatory and immunosuppressive drugs. Their outstanding therapeutic effects, however, are often accompanied by severe and sometimes irreversible side effects. For this reason, one goal of research in the GC field is the development of new drugs, which show a reduced side-effect profile while maintaining the antiinflammatory and immunosuppressive properties of classical GCs. GCs affect gene expression by both transactivation and transrepression mechanisms. The antiinflammatory effects are mediated to a major extent via transrepression, while many side effects are due to transactivation. Our aim has been to identify ligands of the GC receptor (GR), which preferentially induce transrepression with little or no transactivating activity. Here we describe a nonsteroidal selective GR-agonist, ZK 216348, which shows a significant dissociation between transrepression and transactivation both in vitro and in vivo. In a murine model of skin inflammation, ZK 216348 showed antiinflammatory activity comparable to prednisolone for both systemic and topical application. A markedly superior side-effect profile was found with regard to increases in blood glucose, spleen involution, and, to a lesser extent, skin atrophy; however, adrenocorticotropic hormone suppression was similar for both compounds. Based on these findings, ZK 216348 should have a lower risk, e.g., for induction of diabetes mellitus. The selective GR agonists therefore represent a promising previously undescribed class of drug candidates with an improved therapeutic index compared to classical GCs. Moreover, they are useful tool compounds for further investigating the mechanisms of GR-mediated effects.