solo para uso en investigación
Cat. No.: S2178
Estructura química
| Dianas relacionadas | HDAC ATM/ATR DNA-PK WRN DNA/RNA Synthesis Topoisomerase PPAR Sirtuin Casein Kinase eIF |
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| Otros PARP Inhibidores | XAV-939 AZD5305 (Saruparib) Veliparib (ABT-888) PJ34 HCl Iniparib (BSI-201) G007-LK A-966492 UPF 1069 Pamiparib ME0328 |
| Líneas celulares | Tipo de ensayo | Concentración | Tiempo de incubación | Formulación | Descripción de la actividad | PMID |
|---|---|---|---|---|---|---|
| LoVo cells | Function assay | Concentration that gives 50% growth inhibition in LoVo cells, activity expressed as GI50, GI50=11.2 μM | ||||
| Haga clic para ver más datos experimentales de líneas celulares | ||||||
| Peso molecular | 320.39 | Fórmula | C19H20N4O |
Almacenamiento (Desde la fecha de recepción) | |
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| Nº CAS | 328543-09-5 | Descargar SDF | Almacenamiento de soluciones madre |
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| Sinónimos | N/A | Smiles | CN(C)CC1=CC=C(C=C1)C2=NC3=CC=CC4=C3N2CCNC4=O | ||
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In vitro |
DMSO
: 51 mg/mL
(159.18 mM)
Ethanol : 21 mg/mL Water : Insoluble |
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In vivo |
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Paso 1: Introduzca la información a continuación (Recomendado: Un animal adicional para tener en cuenta la pérdida durante el experimento)
Paso 2: Introduzca la formulación in vivo (Esto es solo la calculadora, no la formulación. Por favor, contáctenos primero si no hay una formulación in vivo en la sección de Solubilidad.)
Resultados del cálculo:
Concentración de trabajo: mg/ml;
Método para preparar el líquido maestro de DMSO: mg fármaco predissuelto en μL DMSO ( Concentración del líquido maestro mg/mL, Por favor, contáctenos primero si la concentración excede la solubilidad del DMSO del lote del fármaco. )
Método para preparar la formulación in vivo: Tomar μL DMSO líquido maestro, luego añadirμL PEG300, mezclar y clarificar, luego añadirμL Tween 80, mezclar y clarificar, luego añadir μL ddH2O, mezclar y clarificar.
Método para preparar la formulación in vivo: Tomar μL DMSO líquido maestro, luego añadir μL Aceite de maíz, mezclar y clarificar.
Nota: 1. Por favor, asegúrese de que el líquido esté claro antes de añadir el siguiente disolvente.
2. Asegúrese de añadir el (los) disolvente(s) en orden. Debe asegurarse de que la solución obtenida, en la adición anterior, sea una solución clara antes de proceder a añadir el siguiente disolvente. Se pueden utilizar métodos físicos como el vórtice, el ultrasonido o el baño de agua caliente para ayudar a la disolución.
| Características |
The 1st high-potency PARP-1 inhibitor with the specificity & in vivo activity to enhance chemotherapy and radiation therapy of human cancers.
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| Targets/IC50/Ki |
PARP1
(Cell-free assay) <5 nM(Ki)
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| In vitro |
AG14361 is at least 1000-fold more potent than the benzamides. The IC50 for AG14361 is 29 nM in permeabilized SW620 cells and 14 nM in intact SW620 cells. Crystallographic analysis of AG14361 bound to the catalytic domain of chicken PARP-1 shows that the tricyclic ring system of AG14361 is located in a pocket composed of amino acid residues Trp861, His862, Gly863, Tyr896, Phe897, Ala898, Lys903, Ser904, Tyr907, and Glu988. AG14361 forms important hydrogen bonds with Ser904 and Gly863 and a water-mediated hydrogen bond with Glu988. AG14361-induced growth inhibition is not attributed to PARP-1-related effects because maximal PARP-1 inhibition is observed at much lower concentrations (≤1 μM) than the GI50. AG14361 at 0.4 μM does not affect cancer cell gene expression or growth, but it increases the antiproliferative activity, and inhibits recovery from potentially lethal γ-radiation damage in LoVo cells by 73%. In addition, 0.4 μM AG14361 does not substantially alter gene expression as shown by microarray analysis. A 17-hour exposure of A549 cells to 0.4 μM AG14361 does not change the expression of the 6800 genes. Thus, although 0.4 μM AG14361 inhibits cellular PARP-1 activity by more than 85%, it essentially does not change gene expression and cell proliferation, indicating that the cellular effects of this low concentration of AG14361 are specific for PARP-1 inhibition. Higher, growth-inhibitory concentrations of AG14361 affects gene expression, but these effects are not likely to be related to PARP-1 inhibition because cell proliferation is affected equally in PARP-/- and PARP-1+/+ cells. AG14361 is rapidly absorbed into the bloodstream and distributed to the tumor and liver with lower concentrations detected in the brain. Tissue-to-plasma concentration ratio indicates that AG14361 is retained in tumor tissue over time in both xenograft models, with tumor concentrations (≥15 μM for 2 hours) in excess of that required to inhibit PARP-1 activity in vitro. AG14361 enhances activity in all MMR-proficient cells (1.5–3.3-fold) but is more effective in MMR-deficient cells (3.7–5.2-fold potentiation), overcoming resistance. In contrast, benzylguanine only increases the efficacy in MMR-proficient cells but is ineffective in MMR-deficient cells. AG14361 enhances the growth-inhibitory and cytotoxic effects of topoisomerase I poisons. AG14361 increases the persistence of camptothecin-induced DNA single-strand breaks. |
| Ensayo de quinasa |
Ensayos de actividad PARP-1
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La actividad de la PARP-1 humana recombinante de longitud completa se mide en una mezcla de reacción que contiene 20 nM PARP-1, 500 μM NAD+ más [32P]NAD+ (0,1–0,3 μCi por mezcla de reacción) y ADN de timo de ternera activado (10 μg/mL) a 25oC; la reacción se termina después de 4 minutos añadiendo ácido tricloroacético helado al 10% (p/v). El producto de la reacción [32P]ADP-ribosa incorporado en material insoluble en ácido se deposita en filtros de fibra de vidrio Whatman GF/C con un aparato de microfiltración Bio-Dot y se cuantifica con un PhosphorImager. Se mide la inhibición de la actividad de PARP-1 por AG14361 a 0–600 nM, y el Ki para AG14361 se calcula mediante análisis de regresión no lineal.
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| In vivo |
AG14361 treatment before irradiation statistically significantly increases the sensitivity to radiation therapy of mice bearing LoVo xenografts. AG14361 statistically significantly increases blood flow in xenografts and thus potentially increases drug delivery to tumor xenografts. In vivo, nontoxic doses of AG14361 increases the delay of LoVo xenograft growth induced by x-irradiation by 2- to 3-fold. Coadministration of AG14361 statistically significantly increases activity against LoVo xenografts, with the tumor growth delay being increased from 3 days to 9 days by AG14361 at 5 mg/kg and to 10 days by AG14361 at 15 mg/kg. The combination of AG14361 causes complete regression of SW620 xenograft tumors. PARP-1 activity, detected by pharmacodynamic assay, in SW620 xenografts is inhibited by more than 75% for at least 4 hours after intraperitoneal administration of AG14361 (10 mg/kg), consistent with the concentration of AG14361 persisting in the tumor. |
Referencias |
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