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United States Department of Agriculture

Agricultural Research Service

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Research Project: Fungi As Sources of Small Molecule Inhibitors of Botulism Neurotoxins

Location: Bacterial Foodborne Pathogens & Mycology Research Unit

Project Number: 3620-42000-043-01
Project Type: Nonfunded Cooperative Agreement

Start Date: Oct 01, 2010
End Date: Sep 30, 2013

Objective:
Discover and develop potent, safe and soluble inhibitors of botulinum neurotoxins (BoNTs).

Approach:
Microfungal colonists (fungicolous fungi) of long-lived fungal sporocarps collected in forested habitats within the continental USA and Hawaii were isolated into pure culture. Individual fungi are grown in both liquid and solid culture fermentation and extracted with organic solvents. Extracts containing fungal produced compounds that neutralize botulism, in assays performed by USAMRIID, will be delivered to a cooperating chemist at the University of Iowa for isolation and characterization of the bioactive compound(s). Cultures producing compounds that neutralize botulism neurotoxins will be identified based on morphological characteristics and DNA sequencing of the internal transcribed spacer (ITS) region and domains D1 and D2 of the nuclear large subumit (28S) rDNA geme and comparison with sequences deposited in GenBank (National Center for Biotechnology Information). Viable cultures of the small molecule producing fungal strains of interest will be maintained.

Last Modified: 7/23/2014
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