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Taxol biosynthesis and molecular genetics.

Rodney Croteau1, Raymond E B Ketchum, Robert M Long

  • 1Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164-6340, USA.

Phytochemistry Reviews : Proceedings of the Phytochemical Society of Europe
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PubMed
Summary

Researchers investigated the biosynthesis of the anticancer drug Taxol in yew species. They identified key enzymes and genes, paving the way for improved Taxol production through genetic engineering.

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Area of Science:

  • Biochemistry
  • Plant Biotechnology
  • Natural Product Synthesis

Background:

  • Taxol (paclitaxel) is a crucial anticancer drug derived from Taxus species.
  • Its biosynthesis is a complex, multi-step process involving numerous enzymes.
  • Understanding this pathway is vital for improving Taxol production.

Purpose of the Study:

  • To elucidate the intricate biosynthetic pathway of Taxol in yew.
  • To identify enzymes and genes involved in Taxol production.
  • To explore strategies for enhancing Taxol biosynthesis through genetic engineering.

Main Methods:

  • Utilized Taxus suspension cell cultures induced with methyl jasmonate.
  • Conducted feeding studies to trace metabolic intermediates.
  • Employed cell-free enzymology and cDNA library construction for gene identification.

Main Results:

  • Elucidated early and late segments of the Taxol biosynthetic pathway.
  • Isolated and characterized over 50% of the pathway's enzymes and genes.
  • Identified candidate cDNAs for remaining pathway steps.

Conclusions:

  • Significant progress has been made in understanding Taxol biosynthesis.
  • Numerous targets for genetic engineering of Taxol production have been identified.
  • This research facilitates more efficient production of Taxol and its precursors.