In vitro cytotoxic and genotoxic effect of the crude and ethanolic extract from the rhizome of Curcuma longa L.

• Main Authors: Martha F. Cosquillo-Rafael, Maritza D. Placencia-Medina, Tomás Y. Miranda-Tomasevich, Miriam Moreno-Hinojosa, Mónica G. Retuerto-Figueroa
• Format: Article
• Language: Spanish
• Published: Instituto Nacional de Salud 2020-09-01
• Series: Revista Peruana de Medicina Experimental y Salud Pública
• Subjects: genotóxico; agentes citotóxicos; curcumina; adn genómico; línea celular, células ht29; células 3t3 balb; cáncer; electroforesis en gel
• Online Access: https://rpmesp.ins.gob.pe/index.php/rpmesp/article/view/4817
• ISSN: 1726-4634; 1726-4642

Objectives: To determine the in vitro cytotoxic and genotoxic effect of the crude and ethanolic extract from the Curcuma longa L. rhizome. Materials and methods: The cytotoxic effect was evaluated using DU-145, HT-29, 3T3 BALB/c cell lines. The growth percentages in 48 hours; and the half maximal inhibitory concentration (IC50) were determined. The genotoxic effect on human genomic DNA was determined using the Tomasevich method. Results: Crude extract produced an IC50 of 12.98 ± 0.21 μg/mL for the HT-29 tumor cell line, which is lower than the value obtained for DU-145, with an IC50 of 36.77 ± 9.12 μg/mL. The ethanolic extract presented an IC50 of 13.24 ± 0.77 and 20.54 ± 2.58 μg/mL for both cell lines, respectively; the curcumin standard compound presented an IC50 of 3.96 ± 0.60 and 13.94 ± 2.79 μg/mL, respectively. Crude extract concentrations of 50 and 100 mg/mL fragmented between 40% to 95% of human genomic DNA; while at 200 mg/mL, fragmentation was greater than 95%. The ethanolic extract at all concentrations did not fragment the DNA. Curcumin at 200 mg/mL fragmented less than 5% of human genomic DNA. Conclusions: The crude and ethanolic extracts of Curcuma longa L. demonstrate different in vitro cytotoxic effects for the human tumor cell lines DU-145 and HT-29; similar to the standard curcumin compound. The crude extract of Curcuma longa L. shows a potent genotoxic in vitro activity against human genomic DNA; this type of effect is not produced by the ethanolic extract.