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L-Kynurenine (Synonyms: 3-anthraniloyl-Alanine, L-KYN)

Catalog No.GC12040 Copy One-Click Copy Product Info

L-Kynurenine es un metabolito del L-tryptophan y un agonista del receptor de hidrocarburos arílicos (AhR).

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L-Kynurenine Chemical Structure

Cas No.: 2922-83-0

Tamaño Precio Disponibilidad Cantidad
10mM (in 1mL DMSO)
36,00 $
Disponible
50mg
41,00 $
Disponible

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Sample solution is provided at 25 µL, 10mM.



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Description of L-Kynurenine

L-Kynurenine es un metabolito del L-tryptophan y un agonista del receptor de hidrocarburos arílicos (AhR). L-Kynurenine tambiém puede causar muerte de células NK a través de la vía de la especie reactiva de oxígeno (ROS) [1][2].

L-Kynurenine desencadena la competencia entre el receptor de hidrocarburos arílicos y el factor 1 alfa inducible por hipoxia (HIF-1α) para ARNT (Aryl Hydrocarbon Receptor Nuclear Translocator) en células MCF-7 en condiciones hipóxicas[1]. L-Kynurenine (0-1mM; 48h) afecta específicamente la expresión de NKp46, NKG2D y CD69 en el fenotipo de las células NK cultivadas en IL-2, sin alterar la densidad superficial de otros desencadenantes o correceptores, incluidos CD16, 2B4, NTB-A, DNAM-1 y CD59, o la densidad superficial de los receptores inhibidores [2]. Después de agregar L-Kynurenine (10-40µM) al sobrenadante de las células HCEC, la apoptosis celular aumentó ligeramente y tuvo una cierta toxicidad dependiente de la dosis [3]. El tratamiento con L-Kynurenine (0–800μM; 72h) indujo la dosis dependiente de la inhibición del crecimiento y la apoptosis en las células de NK92 MI[4].

L-Kynurenine (30mg/kg) inhibió la hiperlocomoción inducida por isquemia en el modelo MCAO de ratón y redujo el deterioro inducido por isquemia de la alternancia espontánea (una mediada de la memoria espacial) sin cambiar la temperatura rectal [5]. En el modelo de ligadura del nervio espinal L5/L6 de rata, L-Kynurenine (50-200mg/kg; ip) no afectó a la alodinia en ratas neuropáticos, mientras que la combinación de L-Kynurenine y el inhibidor del transporte de aniones orgánico probenecid (100mg/kg; ip) invirtió la alodinia[6].

References:
[1]. Cuartero M I, Ballesteros I, de la Parra J, et al. L-kynurenine/aryl hydrocarbon receptor pathway mediates brain damage after experimental stroke[J]. Circulation, 2014, 130(23): 2040-2051.
[2]. Schlichtner S, Yasinska I M, Klenova E, et al. L-Kynurenine participates in cancer immune evasion by downregulating hypoxic signaling in T lymphocytes[J]. OncoImmunology, 2023, 12(1): 2244330.
[3]. Chiesa M D, Carlomagno S, Frumento G, et al. The tryptophan catabolite L-kynurenine inhibits the surface expression of NKp46-and NKG2D-activating receptors and regulates NK-cell function[J]. Blood, 2006, 108(13): 4118-4125.
[4]. Serbecic N, Lahdou I, Scheuerle A, et al. Function of the tryptophan metabolite, L-kynurenine, in human corneal endothelial cells[J]. Molecular vision, 2009, 15: 1312.
[5]. Gigler G, Szénási G, Simó A, et al. Neuroprotective effect of L-kynurenine sulfate administered before focal cerebral ischemia in mice and global cerebral ischemia in gerbils[J]. European journal of pharmacology, 2007, 564(1-3): 116-122.
[6]. Pineda‐Farias J B, Pérez‐Severiano F, González‐Esquivel D F, et al. The l‐kynurenine–probenecid combination reduces neuropathic pain in rats[J]. European journal of pain, 2013, 17(9): 1365-1373.

Protocol of L-Kynurenine

Experimentos celulares [1]:

Líneas celulares

Células de cáncer de mama humano MCF-7

Método de preparación

Las células de cáncer de mama humano MCF-7 estuvieron expuestas a 50µM L-Kynurenine durante 4 horas en condiciones normales (21%) o bajas (1%) de suministro de oxígeno.

Condiciones de reacción

50µM; 4h

Áreas de aplicación

L-Kynurenine desencadena la competencia entre el receptor de hidrocarburos arílicos (AhR) y el factor alfa inducible por hipoxia 1 (HIF-1α) para ARNT en células en condiciones hipóxicas.
Experimentos con animales [2]:

Modelos animales

Modelo de oclusión de la arteria cerebral media (MCAO)

Método de preparación

A los ratones se les inyectó L-Kynurenine (30mg/kg) 15 minutos antes de la cirugía MCAO, y los efectos neuroprotectores del sulfato de L-Kynurenine (un precursor del ácido quinurénico) se midieron de 24 a 48 horas después.

Forma de dosificación

30mg/kg; ip

Áreas de aplicación

L-Kynurenine inhibió la hipermotilidad inducida por la isquemia y disminuyó el deterioro inducido por la isquemia de la alternancia espontánea, una medida de la memoria espacial, sin alterar la temperatura rectal.

References:
[1]. Schlichtner S, Yasinska I M, Klenova E, et al. L-Kynurenine participates in cancer immune evasion by downregulating hypoxic signaling in T lymphocytes[J]. OncoImmunology, 2023, 12(1): 2244330.
[2]. Gigler G, Szénási G, Simó A, et al. Neuroprotective effect of L-kynurenine sulfate administered before focal cerebral ischemia in mice and global cerebral ischemia in gerbils[J]. European journal of pharmacology, 2007, 564(1-3): 116-122.

Chemical Properties of L-Kynurenine

Cas No. 2922-83-0 SDF
Sinónimos 3-anthraniloyl-Alanine, L-KYN
Chemical Name (2S)-2-amino-4-(2-aminophenyl)-4-oxobutanoic acid
Canonical SMILES C1=CC=C(C(=C1)C(=O)CC(C(=O)O)N)N
Formula C10H12N2O3 M.Wt 208.21
Solubility ≥ 10.85mg/mL in Water with gentle warming Storage Store at RT
General tips Please select the appropriate solvent to prepare the stock solution according to the solubility of the product in different solvents; once the solution is prepared, please store it in separate packages to avoid product failure caused by repeated freezing and thawing.Storage method and period of the stock solution: When stored at -80°C, please use it within 6 months; when stored at -20°C, please use it within 1 month.
To increase solubility, heat the tube to 37°C and then oscillate in an ultrasonic bath for some time.
Shipping Condition Evaluation sample solution: shipped with blue ice. All other sizes available: with RT, or with Blue Ice upon request.

Complete Stock Solution Preparation Table of L-Kynurenine

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1 mg 5 mg 10 mg
1 mM 4.8028 mL 24.0142 mL 48.0284 mL
5 mM 960.6 μL 4.8028 mL 9.6057 mL
10 mM 480.3 μL 2.4014 mL 4.8028 mL
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Average Rating: 5 ★★★★★ (Based on Reviews and 32 reference(s) in Google Scholar.)

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