Title:A Novel 4H-Chromen-4-One Derivative from Marine Streptomyces ovatisporus
S4702T as Potential Antibacterial and Anti-Cancer Agent
Volume: 22
Issue: 2
Author(s): Aslıhan Kurt-Kızıldoğan*, Neslihan Akarsu, Çiğdem Otur, Arif Kivrak, Nevroz Aslan-Ertas, Sevki Arslan, Dogukan Mutlu, Metin Konus, Can Yılmaz, Dogan Cetin, Tufan Topal and Nevzat Şahin
Affiliation:
- Department of Agricultural Biotechnology, Ondokuz Mayıs University, 55139, Samsun, Turkey
Keywords:
Streptomyces ovatisporus S4702T, 4H-chromen-4-one, antibacterial activity, NMR, LC-MS/MS, cytotoxicity.
Abstract: Background: Marine actinomycetes are among indispensable sources of natural bioactive compounds
with unique antimicrobial and anti-cancer activities.
Objective: Herein, it was aimed to elucidate the bioactive potential of a marine-derived Streptomyces ovatisporus
S4702T, isolated previously.
Methods: Streptomyces ovatisporus S4702T was cultured in N-Z Amine broth, and extraction was carried out
using different organic solvents. Bioassay-guided purification was followed by chemical characterization using
NMR and LC-MS/MS. The compound was then evaluated for its antibacterial, antioxidant and cytotoxic
activities.
Results: Etyl acetate extracts gave the highest antibacterial activity, and chemical characterization of this extract
indicated the formula as C15H29O5N3 and the corresponding possible molecular structure as 4H-chromen-4-one
derivative. It was found highly potent against Bacillus subtilis ATCC 6633 (MIC: 0.25 μg ml-1) and Micrococcus
luteus ATCC 9341 (MBC: 0.5 μg ml-1). It has no remarkable antioxidant activity, but a higher EC50 value and
less cytotoxicity against normal cells. The EC50 values of this chromen derivative were found as 9.68 μg ml-1 for
human colon carcinoma, 9.93 μg ml-1 for human prostate adenocarcinoma and 25.5 μg ml-1 for human embryonic
kidney cells.
Conclusion: Overall, the presented 4H-chromen-4-one derivative is a remarkable bioactive compound with
potent antibacterial and cytotoxic activity. With its high bioactive potential, it is proposed as a good candidate in
medicine.