Low-level laser therapy promotes proliferation and invasion of oral squamous cell carcinoma cells

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dc.contributor.authorHenriques, Águida Cristina Gomes
dc.contributor.authorGinani, Fernanda
dc.contributor.authorOliveira, Ruth Medeiros
dc.contributor.authorKeesen, Tatjana Souza Lima
dc.contributor.authorBarboza, Carlos Augusto Galvão
dc.contributor.authorRocha, Hugo Alexandre Olivera
dc.contributor.authorCastro, Jurema Freire Lisboa de
dc.contributor.authorColetta, Ricardo Della
dc.contributor.authorFreitas, Roseana de Almeida
dc.date.accessioned2017-01-26T14:11:36Z
dc.date.available2017-01-26T14:11:36Z
dc.date.issued2014
dc.description.resumoLow-level laser therapy (LLLT) has been shown to be effective in promoting cell proliferation. There is speculation that the biostimulatory effect of LLLT causes undesirable enhancement of tumor growth in neoplastic diseases since malignant cells are more susceptible to proliferative stimuli. This study evaluated the effects of LLLT on proliferation, invasion, and expression of cyclin D1, E-cadherin, β-catenin, and MMP-9 in a tongue squamous carcinoma cell line (SCC25). Cells were irradiated with a diode laser (660 nm) using two energy densities (0.5 and 1.0 J/cm(2)). The proliferative potential was assessed by cell growth curves and cell cycle analysis, whereas the invasion of cells was evaluated using a Matrigel cell invasion assay. Expression of cyclin D1, E-cadherin, β-catenin, and MMP-9 was analyzed by immunofluorescence and flow cytometry and associated with the biological activities studied. LLLT induced significantly the proliferation of SCC25 cells at 1.0 J/cm(2), which was accomplished by an increase in the expression of cyclin D1 and nuclear β-catenin. At 1.0 J/cm(2), LLLT significantly reduced E-cadherin and induced MMP-9 expression, promoting SCC25 invasion. The results of this study demonstrated that LLLT exerts a stimulatory effect on proliferation and invasion of SCC25 cells, which was associated with alterations on expression of proteins studied.pt_BR
dc.identifier.citationHENRIQUES, Águida Cristina Gomes et al. Low-level laser therapy promotes proliferation and invasion of oral squamous cell carcinoma cells. Lasers in Medical Science, v. 29, n. 4, p. 1385-1395, 2014.pt_BR
dc.identifier.urihttps://repositorio.ufrn.br/jspui/handle/123456789/21764
dc.languageengpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectCell cyclept_BR
dc.subjectCell proliferationpt_BR
dc.subjectFlow cytometrypt_BR
dc.subjectLow-level laser therapypt_BR
dc.subjectSquamous cell carcinomapt_BR
dc.titleLow-level laser therapy promotes proliferation and invasion of oral squamous cell carcinoma cellspt_BR
dc.typearticlept_BR

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