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Mechanism of Action

Chlorinated coumarins unique to Laricifomes officinalis exert antimicrobial activity through transcriptional inhibition involving NF-κB transcription factor interference. Halogenation (chlorine and bromine substitution) dramatically increases antimicrobial potency compared to non-halogenated coumarin analogs. Two novel coumarins identified through the University of Illinois-Chicago Institute for Tuberculosis Research showed exceptional activity against Mycobacterium tuberculosis complex, including extensively drug-resistant (XDR-TB) strains, with the lowest minimum inhibitory concentrations (MICs) recorded among tested natural products.

Research Notes

AgarikonMushroom

Bioassay-guided fractionation at the Institute for Tuberculosis Research (UIC) identified two novel chlorinated coumarins from Agarikon mycelium with potent anti-tubercular activity. These compounds demonstrated MIC values against M. tuberculosis complex that ranked among the most active natural products tested, with extraordinary activity against XDR-TB strains resistant to conventional first- and second-line drugs. The compounds are unique to this species and have not been identified in any other fungal genus. Studies are in vitro; clinical trials pending.

Found In 1 Herb

3D Molecular Structure

Halogenated aromatic compound (chlorinated/brominated coumarins)
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Chlorinated Coumarins

Halogenated aromatic compound (chlorinated/brominated coumarins)Bioactive phytochemical with therapeutic properties

Representative pattern: C₇H₆O₃

Atoms
Carbon
Oxygen
Hydrogen

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