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Effects of ranibizumab and amfenac on the functional abilities and radiosensitivity of uveal melanoma cells / Efeitos do ranibizumabe e do amfenac nas habilidades funcionais e na radiossensibilidade de células de melanoma uveal
Bravo-Filho, Vasco; Logan, Patrick; Zoroquiain, Pablo; Aldrees, Sultan; Vilà, Natàlia; Oweida, Ayman; Belfort Neto, Rubens; Burnier Jr, Miguel N.
  • Bravo-Filho, Vasco; McGill University. Ocular Pathology Laboratory. Montreal. CA
  • Logan, Patrick; McGill University. Ocular Pathology Laboratory. Montreal. CA
  • Zoroquiain, Pablo; McGill University. Ocular Pathology Laboratory. Montreal. CA
  • Aldrees, Sultan; McGill University. Ocular Pathology Laboratory. Montreal. CA
  • Vilà, Natàlia; McGill University. Ocular Pathology Laboratory. Montreal. CA
  • Oweida, Ayman; McGill University. Division of Radiation Oncology. Montreal. CA
  • Belfort Neto, Rubens; Universidade Federal de São Paulo. Ophthalmology and Visual Sciences Department. São Paulo. BR
  • Burnier Jr, Miguel N; McGill University. Ocular Pathology Laboratory. Montreal. CA
Arq. bras. oftalmol ; 82(1): 38-44, Jan.-Feb. 2019. tab, graf
Article in English | LILACS | ID: biblio-973869
ABSTRACT
ABSTRACT

Purpose:

To evaluate the effects of ranibizumab and amfenac in human uveal melanoma cell lines and to explore the ability of these compounds to sensitize uveal melanoma cells to radiation therapy.

Methods:

The 92.1 human uveal melanoma cell line was cultured and subjected to the proposed treatment (ranibizumab, amfenac, and a combination of both). Proliferation, migration, and invasion assays of the 92.1 uveal melanoma cell line were assessed after pretreatment with ranibizumab (125 mg/mL), amfenac (150 nM), or a combination of both. In addition, proliferation rates were assessed after treatment with ranibizumab and amfenac, and the cells were subsequently exposed to various radiation doses (0, 4, and 8 Gy).

Results:

Proliferation assay cells treated with a combination of ranibizumab and amfenac had lower proliferation rates than controls (p=0.016) and than those treated with only ranibizumab (p=0.033). Migration assay a significantly lower migration rate was observed in cells treated with amfenac than the control (p=0.014) and than those treated with ranibizumab (p=0.044). Invasion assay there were no significant differences among the studied groups. Irradiation exposure in the 4 Gy dose group, there were no significant differences among any groups. In the 8 Gy dose group, treatment with ranibizumab, amfenac, and their combination prior to application of the 8 Gy radiation led to a marked reduction in proliferation rates (p=0.009, p=0.01, and p=0.034, respectively) compared with controls.

Conclusion:

Combination of ranibizumab and amfenac reduced the proliferation rate of uveal melanoma cells; however, only amfenac monotherapy significantly decreased cell migration. The radiosensitivity of the 92.1 uveal melanoma cell line increased following the administration of ranibizumab, amfenac, and their combination. Further investigation is warranted to determine if this is a viable pretreatment strategy to render large tumors amenable to radiotherapy.
RESUMO
RESUMO

Objetivo:

Avaliar os efeitos do ranibizumabe em associação com o amfenac nas células de melanoma uveal humano e explorar a capacidade desses compostos em sensibilizar as células de melanoma uveal à radioterapia.

Métodos:

Células de melanoma uveal humano do tipo 92.1 foram cultivadas e submetidas ao tratamento proposto (ranibizumabe, amfenac e a combinação de ambos). Ensaios de proliferação, migração e invasão com as células de melanoma uveal do tipo 92.1 foram avaliados após tratamento com ranibizumabe (125 mg/ml), amfenac (150 nM) e a combinação de ambos. Além disso, as taxas de proliferação foram avaliadas após tratamento com ranibizumabe e amfenac com subsequente exposição das células a diferentes doses de radiação (0 Gy, 4 Gy e 8 Gy).

Resultados:

Ensaio de proliferação células tratadas com ranibizumabe e amfenac combinados apresentaram taxas de proliferação inferiores em comparação ao grupo controle (p=0,016), do que as tratadas apenas com ranibizumabe (p=0,033). Ensaio de migração foi observada uma taxa de migração significativamente mais baixa nas células tratadas com amfenac do que no grupo controle (p=0,014) e do que nas tratadas com ranibizumabe (p=0,044). Ensaio de invasão não houve diferenças significativas entre os grupos estudados. Exposição à irradiação no grupo da dose de 4 Gy, não houve diferença significante entre os grupos. No grupo da dose de 8 Gy, o tratamento com ranibizumabe, afenac e sua combinação antes da aplicação da radiação de 8 Gy levou a uma redução acentuada nas taxas de proliferação (p=0,009, p=0,01 e p=0,034, respectivamente) em comparação aos grupos controle.

Conclusão:

A combinação de ranibizumabe e amfenac reduziu a taxa de proliferação das células de melanoma uveal; no entanto, apenas o amfenac diminuiu significativamente a migração celular. A radiossensibilidade das células de melanoma uveal do tipo 92.1 aumentou após a administração de ranibizumabe, amfenac e sua combinação. Mais investigações são necessárias para determinar se esta é uma estratégia de pré-tratamento viável para tornar grandes tumores passíveis de radioterapia.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Phenylacetates / Angiogenesis Inhibitors / Cyclooxygenase 2 Inhibitors / Ranibizumab / Melanoma Type of study: Evaluation studies Limits: Humans Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2019 Type: Article Affiliation country: Brazil / Canada Institution/Affiliation country: McGill University/CA / Universidade Federal de São Paulo/BR

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Full text: Available Index: LILACS (Americas) Main subject: Phenylacetates / Angiogenesis Inhibitors / Cyclooxygenase 2 Inhibitors / Ranibizumab / Melanoma Type of study: Evaluation studies Limits: Humans Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2019 Type: Article Affiliation country: Brazil / Canada Institution/Affiliation country: McGill University/CA / Universidade Federal de São Paulo/BR