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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.)

Hydrolyzed Rutin Decreases Worsening of Anaplasia in Glioblastoma Relapse

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Parisi de Oliveira, Carlos Tadeu [1] ; Colenci, Renato [1] ; Pacheco, Cesar Cozar [1] ; Mariano, Patrick Moro [1] ; do Prado, Paula Ribeiro [1] ; Rosas Mamprin, Gustavo Pignatari [1] ; Santana, Maycon Giovani [2] ; Gambero, Alessandra [1, 3] ; Carvalho, Patricia de Oliveira [1, 3] ; Priolli, Denise Goncalves [1, 3]
Total Authors: 10
[1] Sao Francisco Univ, Med Sch, Braganca Paulista, SP - Brazil
[2] Sao Francisco Univ, Nurse Sch, Braganca Paulista, SP - Brazil
[3] Sao Francisco Univ, Postgrad Program Hlth Sci, Med Sch, Av Sao Francisco Assis 218, BR-12916900 Braganca Paulista, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: CNS & Neurological Disorders-Drug Targets; v. 18, n. 5, p. 405-412, 2019.
Web of Science Citations: 1

Background: Gliomas are aggressive and resilient tumors. Progression to advanced stages of malignancy, characterized by cell anaplasia, necrosis, and reduced response to conventional surgery or therapeutic adjuvant, are critical challenges in glioma therapy. Relapse of the disease poses a considerable challenge for management. Hence, new compounds are required to improve therapeutic response. As hydrolyzed rutin (HR). a compound modified via rutin deglycosylation, as well as some flavonoids demonstrated antiproliferative effect for glioblastoma, these are considered potential epigenetic drugs. Objective: The purpose of this study was to determine the antitumor activity and evaluate the potential for modifying tumor aggressivity of rutin hydrolysates for treating both primary and relapsed glioblastoma. Methods: The glioblastoma cell line, U251, was used for analyzing cell cycle inhibition and apoptosis and for establishing the GBM mouse model. Mice with GBM were treated with HR to verify antitumor activity. Histological analysis was used to evaluate HR interference in aggressive behavior and glioma grade. Immunohistochemistry, comet assay, and thiobarbituric acid reactive substance (TSARS) values were used to evaluate the mechanism of HR action. Results: HR is an antiproliferative and antitumoral compound that inhibits the cell cycle via a p53-independent pathway. HR reduces tumor growth and aggression, mainly by decreasing mitosis and necrosis rates without genotoxicity, which is suggestive of epigenetic modulation. Conclusion: HR possesses antitumor activity and decreases anaplasia in glioblastoma, inhibiting progression to malignant stages of the disease. HR can improve the effectiveness of response to conventional therapy, which has a crucial role in recurrent glioma. (AU)

FAPESP's process: 12/04634-1 - Investigation of the cytotoxic/apoptotic potential of new flavonoid derivatives: in vitro and in vivo studies
Grantee:Denise Gonçalves Priolli
Support type: Regular Research Grants