Sulforaphane Induces DNA Damage and Mitotic Abnormalities in Human Osteosarcoma MG-63 Cells: Correlation with Cell Cycle Arrest and Apoptosis

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Ferreira de Oliveira, JP (Author) Other; Remedios, C (Author) Other; Oliveira, H (Author) Other; Pinto, P (Author) Other; Pinho, F (Author) Other; Pinho, S (Author) Other; Costa, M (Author) Other; Santos, C (Author) Other

Journal

Title: Nutrition and Cancer

Vol. 66

Pages: 325-334

ISSN: 0163-5581

Publisher: Taylor & Francis

Indexing

ISI Web of Knowledge - 36 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00G-GXM

DOI: 10.1080/01635581.2014.864777

Abstract (EN): Osteosarcoma is a recalcitrant bone malignancy with poor responsiveness to treatments; therefore, new chemotherapeutic compounds are needed. Sulforaphane (SFN) has been considered a promising chemotherapeutic compound for several types of tumors by inducing apoptosis and cytostasis, but its effects (e.g., genotoxicity) in osteosarcoma cells remains exploratory. In this work, the MG-63 osteosarcoma cell line was exposed to SFN up to 20 ¿M for 24 and 48 h. SFN induced G2/M phase arrest and decreased nuclear division index, associated with disruption of cytoskeletal organization. Noteworthy, SFN induced a transcriptome response supportive of G2/M phase arrest, namely a decrease in Chk1- and Cdc25C-encoding transcripts, and an increase in Cdk1-encoding transcripts. After 48-h exposure, SFN at a dietary concentration (5 ¿M) contributed to genomic instability in the MG-63 cells as confirmed by increased number of DNA breaks, clastogenicity, and nuclear and mitotic abnormalities. The increased formation of nucleoplasmic bridges, micronuclei, and apoptotic cells positively correlated with loss of viability. These results suggest that genotoxic damage is an important step for SFN-induced cytotoxicity in MG-63 cells. In conclusion, SFN shows potential to induce genotoxic damage at low concentrations and such potential deserves further investigation in other tumor cell types. © 2014 Copyright Taylor and Francis Group, LLC.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10