Natural product discovery: past, present, and future.

Area of Science:

• Microbiology
• Natural Product Chemistry
• Drug Discovery

Background:

• Microorganisms are a rich source of natural products used in medicine, animal health, and crop protection.
• Early natural product discovery relied on low-throughput methods; later shifts to synthetic libraries decreased discovery rates.
• Recent genome sequencing reveals microbes produce significantly more secondary metabolites than previously known.

Observation:

• Microbial genomes, especially those of actinomycetes, encode a vast repertoire of secondary metabolites.
• The cost of genome sequencing has dramatically decreased, enabling large-scale exploration.
• Advances in omics technologies facilitate the identification of novel natural products from microbial genomes.

Findings:

• Genome sequencing indicates microbes can produce up to ten times more secondary metabolites than previously recognized.
• Actinomycetes, in particular, can produce 30-50 secondary metabolites each.
• The concept of
• biosynthetic dark matter
• refers to these uncharacterized metabolic pathways.

Implications:

• Microbial genome mining offers a powerful strategy to discover new and novel secondary metabolites.
• This approach can revitalize the drug discovery pipeline by tapping into unexplored chemical diversity.
• Integration of bioinformatics and omics technologies is crucial for successful natural product discovery from genomes.