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Title: Oxidation and cyclization of casbene in the biosynthesis of Euphorbia factors from mature seeds of Euphorbia lathyris L.

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [1];  [3];  [1];  [4];  [5];  [1]; ORCiD logo [2];  [4]; ORCiD logo [3];  [4]
  1. Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg C, Denmark,
  2. Evolva AS, CH-4153 Reinach, Switzerland,
  3. Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, DK-2100 Copenhagen, Denmark,
  4. Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg C, Denmark,, Center for Synthetic Biology “bioSYNergy,” DK-1871 Frederiksberg C, Denmark,
  5. Science for Life Laboratory, School of Biotechnology, Kungliga Tekniska Högskolan Royal Institute of Technology, SE-171 21 Stockholm, Sweden

Significance Ingenol mebutate is a diterpene ester with a highly complex macrocyclic structure that has been approved for the treatment of actinic keratosis, a precondition of skin cancer. The current production of ingenol mebutate through plant extraction or chemical synthesis is inefficient and costly. Here, we describe the discovery of a biosynthetic route in Euphorbia lathyris L. (caper spurge) in which regio-specific oxidation of casbene is followed by an unconventional cyclization to yield jolkinol C, a probable key intermediate in the biosynthesis of macrocyclic diterpenes, including ingenol mebutate. These results can facilitate the biotechnological production of this high-value pharmaceutical and discovery of new biosynthetic intermediates with important bioactivities.

Sponsoring Organization:
USDOE
Grant/Contract Number:
FC02-07ER64494
OSTI ID:
1288983
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 34 Vol. 113; ISSN 0027-8424
Publisher:
Proceedings of the National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
English

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