A novel bioactive delta lactone FD-211. Taxonomy, isolation and characterization

Area of Science:

• Natural Product Chemistry
• Pharmacology
• Mycology

Background:

• Multidrug resistance (MDR) in mammalian cancer cells presents a significant challenge in chemotherapy.
• Natural products are a vital source for novel therapeutic agents.
• The fungus Myceliophthora lutea TF-0409 was investigated for bioactive secondary metabolites.

Purpose of the Study:

• To identify and characterize novel compounds with potential anticancer activity from natural sources.
• To evaluate the efficacy of newly discovered compounds against multidrug-resistant cancer cell lines.

Main Methods:

• Fermentation of Myceliophthora lutea TF-0409.
• Isolation and structural elucidation of the active compound FD-211 (a delta lactone).
• Anticancer activity screening against various cultured tumor cell lines, including adriamycin-resistant HL-60 cells.

Main Results:

• A novel delta lactone, designated FD-211, was successfully isolated from the fermentation broth.
• FD-211 demonstrated broad-spectrum cytotoxic activity against a panel of cultured tumor cell lines.
• Notably, FD-211 exhibited significant efficacy against adriamycin-resistant HL-60 cells, indicating potential to overcome drug resistance.

Conclusions:

• The novel delta lactone FD-211 is a promising candidate for further development as an anticancer therapeutic.
• FD-211's activity against multidrug-resistant cancer cells warrants further investigation into its mechanism of action and therapeutic potential.