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AZT on telomerase activity and cell proliferation in HS 839.T melanoma cells / AZT na atividade da telomerase e na proliferação de células de melanoma HS 839.T
Souza Sobrinho, Celestino Prospero de; Gragnani, Alfredo; Santos, Ivan Dunshee Abranches Oliveira; Oliveira, Andrea Fernandes; Lipay, Monica Vanucci Nunes; Ferreira, Lydia Masako.
  • Souza Sobrinho, Celestino Prospero de; UNIFESP. EPM. Department of Surgery. Sao Paulo. BR
  • Gragnani, Alfredo; UNIFESP. EPM. Department of Surgery. Sao Paulo. BR
  • Santos, Ivan Dunshee Abranches Oliveira; UNIFESP. EPM. Department of Surgery. Sao Paulo. BR
  • Oliveira, Andrea Fernandes; UNIFESP. EPM. Department of Surgery. Sao Paulo. BR
  • Lipay, Monica Vanucci Nunes; UNIFESP. EPM. Department of Medicine. Sao Paulo. BR
  • Ferreira, Lydia Masako; UNIFESP. EPM. Department of Surgery. Sao Paulo. BR
Acta cir. bras ; 27(12): 855-860, dez. 2012. graf
Article in English | LILACS | ID: lil-657968
ABSTRACT

PURPOSE:

To evaluate telomerase activity and proliferation of HS839.T melanoma cells, subjected to the action of AZT.

METHODS:

Cells were grown in triplicate, AZT at different concentrations 50, 100 and 200μM, was added and left for 24 and 48 hours, and its effects were compared with the control group. Telomerase activity was detected by PCR and cell proliferation was evaluated by MTT.

RESULTS:

After 24 hours, there was no inhibition of cell proliferation or telomerase activity when compared to the control group. After 48 hours, there was a momentary decrease, suggesting that the cell lines used in this study are sensitive to AZT, but quickly recover both the enzyme activity and cell proliferation.

CONCLUSION:

The action of AZT on the melanoma cells studied, at the concentrations and times tested, did not inhibit telomerase activity nor affect cell proliferation.
RESUMO

OBJETIVO:

Avaliar a atividade da telomerase e da proliferação de células de melanoma HS839.T submetidas à ação do AZT.

MÉTODOS:

As células foram cultivadas, em triplicata, com diferentes concentrações de AZT 50, 100 e 200µM, por 24h e 48h, seus efeitos comparados com o grupo controle. A atividade da telomerase foi detectada por PCR e a proliferação celular avaliada por MTT.

RESULTADOS:

No tempo de 24 horas, não houve inibição da proliferação celular e da atividade da telomerase em comparação com o grupo controle. No período de 48 horas, houve uma diminuição momentânea, sugerindo que as células das linhagens utilizadas neste estudo são sensíveis ao AZT, mas que recuperam a atividade enzimática e proliferativa.

CONCLUSÃO:

Nas células de melanoma HS839.T estudadas e nas concentrações e tempos propostos, a ação do AZT não inibiu a atividade da telomerase e não afetou a proliferação celular.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Skin Neoplasms / Zidovudine / Telomerase / Cell Proliferation / Melanoma Limits: Adult / Female / Humans Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2012 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: UNIFESP/BR

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Full text: Available Index: LILACS (Americas) Main subject: Skin Neoplasms / Zidovudine / Telomerase / Cell Proliferation / Melanoma Limits: Adult / Female / Humans Language: English Journal: Acta cir. bras Journal subject: General Surgery / Procedimentos Cir£rgicos Operat¢rios Year: 2012 Type: Article / Project document Affiliation country: Brazil Institution/Affiliation country: UNIFESP/BR