Antiproliferative activity of carotenoid pigments produced by extremophile bacteria

• Main Authors: Tapia, Cristian, López, Bárbara, Astuya, Allisson, Becerra, José, Gugliandolo, Concetta, Parra, Boris, Martínez, Miguel
• Format: Other Non-Article Part of Journal/Newspaper
• Language: unknown
• Published: Taylor & Francis 2019
• Subjects: Biochemistry; Medicine; Microbiology; FOS Biological sciences; Cell Biology; Biotechnology; 59999 Environmental Sciences not elsewhere classified; FOS Earth and related environmental sciences; Ecology; Cancer; Patagonia; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.6084/m9.figshare.11338916; https://tandf.figshare.com/articles/journal_contribution/Antiproliferative_activity_of_carotenoid_pigments_produced_by_extremophile_bacteria/11338916

Various microorganisms are able to synthesize pigments, which usually present antioxidant properties. The aim of this work was to evaluate the antiproliferative activity of bacterial pigments against cancer cells Neuro-2a, Saos-2 and MCF-7. Pigments were obtained from Deinococcus sp. UDEC-P1 and Arthrobacter sp. UDEC-A13. Both bacterial strains were isolated from cold environments (Patagonia and Antarctica, respectively). Pigments were purified and analyzed by HPLC. Antiproliferative activity was evaluated by 3-4,5-dimethylthiazol-2-yl-2,5-diphenyltetrazolium (MTT) assay. Deinoxanthin carotenoid obtained from Deinococcus sp. UDEC-P1 was able to reduce significatively the viability of Saos-2 (37.1%), while no effect was observed against MCF-7 and Neuro-2a. Pigments obtained from Arthrobacter sp. UDEC-A13 showed a significant viability reduction of three tumour cells (20.6% Neuro-2a, 26.3% Saos-2 and 13.2% MCF-7). Therefore, carotenoid pigments produced by extremophilic bacteria Deinococcus sp. UDEC-P1 and Arthrobacter sp. UDEC-A13 could be proposed as novel complementary compounds in anticancer chemotherapy.