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Effects of Aristotelia chilensis berry juice on cyclooxygenase 2 expression, NF-kB, NFAT, ERK1/2 and PI3K/Akt activation in colon cancer cells / Efecto de un concentrado del fruto de Aristotelia chilensis sobre la expresión de cicloxigenasa 2, NF-kB, NFAT, ERK1/2 y activación de PI3K/Akt en células de cancer de colon
Ojeda, Juan; Jara, Evelyn; Molina, Luis; Parada, Fabiana; Burgos, Rafael A; Hidalgo, María A; Hancke, Juan L.
  • Ojeda, Juan; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
  • Jara, Evelyn; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
  • Molina, Luis; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
  • Parada, Fabiana; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
  • Burgos, Rafael A; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
  • Hidalgo, María A; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
  • Hancke, Juan L; Universidad Austral de Chile. Institute of Pharmacology and Morphophysiology. Valdivia. CL
Bol. latinoam. Caribe plantas med. aromát ; 10(6): 543-552, ene. 2011. ilus
Article in English | LILACS | ID: lil-618850
ABSTRACT
Aristotelia chilensis is a native berry from southern Chile with a high content of anthocyanins, compounds that exhibit antioxidant and anti-inflammatory properties. In the present study, we evaluated the effects of A. chilensis berry juice on cyclooxygenase (COX)-2 expression, intracellular signaling pathways, and cell viability in colon cancer cells. The treatment of Caco-2 cells with A. chilensis diluted juice for 24 h reduced the protein and mRNA expression of COX-2, as well as the TNF-Ą-induced NF-kB luciferase activity and NFAT activation. In contrast, 4 h after administration, A. chilensis transiently reduced the cytoplasmic IkBa levels and increased ERK1/2 and Akt phosphorylation as well as c-fos expression. At concentrations that reduced COX-2 expression, A. chilensis did not affected Caco-2 cell viability. Our results suggest a potential anti-carcinogenic and anti-inflammatory effect of A. chilensis.
RESUMEN
Aristotelia chilensis es un berrie originario del sur de Chile, que posee un alto contenido de antocianinas, compuestos con propiedades antioxidantes y anti-inflamatorias. En este estudio, se evaluó los efectos de un concentrado de A. chilensis sobre expresión de ciclooxigenasa (COX)-2, vías de señalización y viabilidad en células de cáncer de colon. El tratamiento de células Caco-2 con A. chilensis por 24 h redujo la expresión de la proteína y mRNA de COX-2, y disminuyó la actividad luciferasa regulada por NF-kB o NFAT. El tratamiento de células Caco-2 por 4 h con A. chilensis redujo transitoriamente los niveles citoplasmáticos de IkBa, aumentó la fosforilación de ERK1/2 y Akt y la expresión de c-fos. A. chilensis no afectó la viabilidad celular, a concentraciones que redujo la expresión de COX-2. Los resultados sugieren un potencial efecto anticancerígeno y antiinflamatorio de A. chilensis.
Subject(s)

Full text: Available Index: LILACS (Americas) Main subject: Plant Extracts / Colonic Neoplasms / Elaeocarpaceae / Antineoplastic Agents Country/Region as subject: South America / Chile Language: English Journal: Bol. latinoam. Caribe plantas med. aromát Journal subject: Botany / Medicine / Plantas Medicinais / Terapias Complementares Year: 2011 Type: Article Affiliation country: Chile Institution/Affiliation country: Universidad Austral de Chile/CL

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Full text: Available Index: LILACS (Americas) Main subject: Plant Extracts / Colonic Neoplasms / Elaeocarpaceae / Antineoplastic Agents Country/Region as subject: South America / Chile Language: English Journal: Bol. latinoam. Caribe plantas med. aromát Journal subject: Botany / Medicine / Plantas Medicinais / Terapias Complementares Year: 2011 Type: Article Affiliation country: Chile Institution/Affiliation country: Universidad Austral de Chile/CL