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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Melatonin decreases breast cancer metastasis by modulating Rho-associated kinase protein-1 expression

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Author(s):
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Borin, Thaiz Ferraz [1] ; Arbab, Ali Syed [2] ; Gelaleti, Gabriela Bottaro [3, 1] ; Ferreira, Livia Carvalho [3, 1] ; Moschetta, Marina Gobbe [1] ; Jardim-Perassi, Bruna Victorasso [1] ; Iskander, A. S. M. [2] ; Varma, Nadimpalli Ravi S. [4] ; Shankar, Adarsh [2] ; Coimbra, Verena Benedick [1] ; Fabri, Vanessa Alves [1] ; de Oliveira, Juliana Garcia [5] ; Pires de Campos Zuccari, Debora Aparecida [3, 1]
Total Authors: 13
Affiliation:
[1] Fac Med Sao Jose Rio Preto FAMERP, Dept Mol Biol, LIMC, BR-15090000 Sao Jose Do Rio Preto, SP - Brazil
[2] Georgia Regents Univ, Ctr Canc, Tumor Angiogenesis Lab, Augusta, GA - USA
[3] Univ Estadual Paulista Julio de Mesquita Filho IB, Sao Jose Do Rio Preto, SP - Brazil
[4] Henry Ford Hosp, Dept Radiol, Cellular & Mol Imaging Lab, Detroit, MI 48202 - USA
[5] Univ Sagrado Coracao, Bauru, SP - Brazil
Total Affiliations: 5
Document type: Journal article
Source: Journal of Pineal Research; v. 60, n. 1, p. 3-15, JAN 2016.
Web of Science Citations: 51
Abstract

The occurrence of metastasis, an important breast cancer prognostic factor, depends on cell migration/invasion mechanisms, which can be controlled by regulatory and effector molecules such as Rho-associated kinase protein (ROCK-1). Increased expression of this protein promotes tumor growth and metastasis, which can be restricted by ROCK-1 inhibitors. Melatonin has shown oncostatic, antimetastatic, and anti-angiogenic effects and can modulate ROCK-1 expression. Metastatic and nonmetastatic breast cancer cell lines were treated with melatonin as well as with specific ROCK-1 inhibitor (Y27632). Cell viability, cell migration/invasion, and ROCK-1 gene expression and protein expression were determined in vitro. In vivo lung metastasis study was performed using female athymic nude mice treated with either melatonin or Y27832 for 2 and 5 wk. The metastases were evaluated by X-ray computed tomography and single photon emission computed tomography (SPECT) and by immunohistochemistry for ROCK-1 and cytokeratin proteins. Melatonin and Y27632 treatments reduced cell viability and invasion/migration of both cell lines and decreased ROCK-1 gene expression in metastatic cells and protein expression in nonmetastatic cell line. The numbers of `hot' spots (lung metastasis) identified by SPECT images were significantly lower in treated groups. ROCK-1 protein expression also was decreased in metastatic foci of treated groups. Melatonin has shown to be effective in controlling metastatic breast cancer in vitro and in vivo, not only via inhibition of the proliferation of tumor cells but also through direct antagonism of metastatic mechanism of cells rendered by ROCK-1 inhibition. When Y27632 was used, the effects were similar to those found with melatonin treatment. (AU)

FAPESP's process: 11/13154-0 - Metastasis evaluation in vitro and in vivo mediated by ROCK and miR-17 in breast cancer, in response to the treatment with melatonin and curcumin
Grantee:Debora Aparecida Pires de Campos Zuccari
Support type: Regular Research Grants
FAPESP's process: 11/20850-3 - Metastasis evaluation in vitro and in vivo mediated by ROCK-1 and miR-17 in breast cancer, in response to the treatment with melatonin and curcumin
Grantee:Thaiz Ferraz Borin
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 11/18986-4 - Immunocytochemistry analysis of protein expression of rock kinase in breast cancer in response to treatment with melatonin
Grantee:Vanessa Alves Fabri
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 12/12114-8 - Metastasis evaluation by ROCK-1 and miR-17 in breast cancer, in response to the treatment with melatonin and curcumin
Grantee:Thaiz Ferraz Borin
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 11/18987-0 - In vitro evaluation of cell migration and invasion in breast cancer in response to treatment melatonin
Grantee:Verena Benedick Coimbra
Support type: Scholarships in Brazil - Scientific Initiation