Nomofungin: a new microfilament disrupting agent

Area of Science:

• Natural Product Chemistry
• Mycology
• Cell Biology

Background:

• Endophytic fungi residing in medicinal plants are a rich source of novel bioactive compounds.
• Ficus species are known to harbor diverse endophytic microorganisms with potential pharmacological activities.

Purpose of the Study:

• To isolate and characterize a new alkaloid from an endophytic fungus found on Ficus microcarpa.
• To elucidate the chemical structure and absolute stereochemistry of the novel compound.
• To evaluate the biological activity, including cytotoxicity and cellular effects, of the isolated alkaloid.

Main Methods:

• Fermentation of an endophytic fungus isolated from Ficus microcarpa bark.
• Structure elucidation using spectroscopic methods (e.g., NMR, Mass Spectrometry).
• Determination of absolute stereochemistry via the exciton chirality method.
• Cytotoxicity assays against LoVo and KB cell lines.
• Microfilament disruption assays in cultured mammalian cells.

Main Results:

• Isolation and characterization of a new alkaloid named nomofungin.
• Determination of the unprecedented ring system structure and absolute stereochemistry of nomofungin.
• Nomofungin demonstrated moderate cytotoxicity with minimum inhibitory concentrations (MICs) of 2 µg/mL against LoVo cells and 4.5 µg/mL against KB cells.
• The compound was found to disrupt microfilaments in cultured mammalian cells.

Conclusions:

• Nomofungin is a novel alkaloid with a unique chemical structure isolated from an endophytic fungus.
• The compound exhibits moderate cytotoxic effects and disrupts the cellular microfilament network.
• This discovery highlights the potential of endophytic fungi from Ficus species as a source for new bioactive natural products.