Discovery of FoTO1 and Taxol genes enables biosynthesis of baccatin III

• 成果类型: Article
• 署名作者: McClune, Conor James; Liu, Jack Chun-Ting; Wick, Chloe; de la Pena, Ricardo; Lange, Bernd Markus; Fordyce, Polly M.; Sattely, Elizabeth S.
• 署名单位: Stanford University; Stanford University; Howard Hughes Medical Institute; Stanford University; Washington State University; Stanford University; Stanford University
• 刊物名称: Nature
• ISSN/ISSBN: 0028-1521
• DOI: 10.1038/s41586-025-09090-z
• 发表日期: 2025-07-10
• 关键词: molecular-cloning; taxus; expression; proteins; enzymes; taxane; step

摘要

Plants make complex and potent therapeutic molecules1,2, but sourcing these molecules from natural producers or through chemical synthesis is difficult, which limits their use in the clinic. A prominent example is the anti-cancer therapeutic paclitaxel (sold under the brand name Taxol), which is derived from yew trees (Taxus species)3. Identifying the full paclitaxel biosynthetic pathway would enable heterologous production of the drug, but this has yet to be achieved despite half a century of research4. Within Taxus' large, enzyme-rich genome5, we suspected that the paclitaxel pathway would be difficult to resolve using conventional RNA-sequencing and co-expression analyses. Here, to improve the resolution of transcriptional analysis for pathway identification, we developed a strategy we term multiplexed perturbation x single nuclei (mpXsn) to transcriptionally profile cell states spanning tissues, cell types, developmental stages and elicitation conditions. Our data show that paclitaxel biosynthetic genes segregate into distinct expression modules that suggest consecutive subpathways. These modules resolved seven new genes, allowing a de novo 17-gene biosynthesis and isolation of baccatin III, the industrial precursor to Taxol, in Nicotiana benthamiana leaves, at levels comparable with the natural abundance in Taxus needles. Notably, we found that a nuclear transport factor 2 (NTF2)-like protein, FoTO1, is crucial for promoting the formation of the desired product during the first oxidation, resolving a long-standing bottleneck in paclitaxel pathway reconstitution. Together with a new beta-phenylalanine-CoA ligase, the eight genes discovered here enable the de novo biosynthesis of 3'-N-debenzoyl-2'-deoxypaclitaxel. More broadly, we establish a generalizable approach to efficiently scale the power of co-expression analysis to match the complexity of large, uncharacterized genomes, facilitating the discovery of high-value gene sets.