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Lithraea caustic (Litre) Extract Promotes an Antitumor Response Against B16 Melanoma.
Robles-Planells, Claudia; Michelson, Sofia A; Mena, Javier; Escrig, Daniela; Rojas, Juan L; Sanchez-Guerrero, Giselle; Hernández, Ronny; Barrera-Avalos, Carlos; Rojo, Leonel E; Sauma, Daniela; Kalergis, Alexis M; Imarai, Mónica; Fernández, Ricardo; Robles, Carolina A; Leiva-Salcedo, Elías; Santander, Rocio; Escobar, Alejandro; Acuña-Castillo, Claudio.
Afiliação
  • Robles-Planells C; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Michelson SA; Centro de Biotecnología Acuícola, Universidad de Santiago de Chile, Santiago, Chile.
  • Mena J; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Escrig D; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Rojas JL; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Sanchez-Guerrero G; Escuela de Medicina, Facultad de Ciencias Médicas, Universidad de Santiago de Chile, Santiago, Chile.
  • Hernández R; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Barrera-Avalos C; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Rojo LE; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Sauma D; Centro de Biotecnología Acuícola, Universidad de Santiago de Chile, Santiago, Chile.
  • Kalergis AM; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Imarai M; Centro de Biotecnología Acuícola, Universidad de Santiago de Chile, Santiago, Chile.
  • Fernández R; Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Santiago, Chile.
  • Robles CA; Millennium Institute Immunology and Immunotherapy, FOCIS Center of Excellence, Facultad de Ciencias Biológicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.
  • Leiva-Salcedo E; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
  • Santander R; Centro de Biotecnología Acuícola, Universidad de Santiago de Chile, Santiago, Chile.
  • Escobar A; Departamento de Salud, Universidad de Los Lagos, Osorno, Chile.
  • Acuña-Castillo C; Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile.
Front Pharmacol ; 10: 1201, 2019.
Article em En | MEDLINE | ID: mdl-31695610
Melanoma immunotherapy, specifically the autotransplant of dendritic cells charged with tumors antigens, has shown promising results in clinical trials. The positive clinical effects of this therapy have been associated to increased Th17 response and delayed-type hypersensitivity (DTH) against to tumor antigens. Some synthetic compounds, such as diphenylcyclopropenone (DPCP), are capable of triggering a DTH response in cutaneous malignancies and also to induce clinically relevant effects against melanoma. In this work, we evaluated Litre extract (LExT), a standardized extract of a Chilean stinging plant, Lithraea caustic (Litre). As Litre plant is known to induce DTH, we used a murine B16 melanoma model to compare the topical and intratumor efficacy of LExT with synthetic DTH inducers (DPCP and 2,4-dinitrochlorobenzene [DNCB]). LExt contained mainly long chain catechols and sesquiterpenes. The intratumor injection of LExT induced a significant delay in tumor growth, similarly topical treatment of an established tumor with 0.1% LExT ointment induced a growth delay and even tumor regression in 15% of treated animals. No significant changes were observed on the T-cell populations associated to LExT treatment, and neither DNCB nor DPCP were capable to induce none of the LExT-induced antitumoral effects. Interestingly, our results indicate that LExT induces an antitumor response against melanoma in a mouse model and could bring a new -and affordable- treatment for melanoma in humans.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article