PMID- 34257844 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210715 IS - 2001-0370 (Print) IS - 2001-0370 (Electronic) IS - 2001-0370 (Linking) VI - 19 DP - 2021 TI - Computational biotechnology guides elucidation of the biosynthesis of the plant anticancer drug camptothecin. PG - 3659-3663 LID - 10.1016/j.csbj.2021.06.028 [doi] AB - Camptothecin is a clinically important monoterpene indole alkaloid (MIAs) used for treating various cancers. Currently, the production of this biopharmaceutical hinges on its extraction from camptothecin-producing plants, leading to high market prices and supply bottlenecks. While synthetic biology combined with metabolic approaches could represent an attractive alternative approach to manufacturing, it requires firstly a complete biosynthetic pathway elucidation, which is, unfortunately, severely missing in species naturally accumulating camptothecin. This knowledge gap can be attributed to the lack of high-quality genomic resources of medicinal plant species. In such a perspective, Yamazaki and colleagues produced the first described and experimentally validated chromosome-level plant genome assembly of Ophiorrhiza pumila, a prominent source plant of camptothecin for the pharmaceutical industry. More specifically, they have developed a method incorporating Illumina reads, PacBio single-molecule reads, optical mapping and Hi-C sequencing, followed by the experimental validation of contig orientation within scaffolds, using fluorescence in situ hybridization (FISH) analysis. This relevant strategy resulted in the most contiguous and complete de novo plant reference genome described to date, which can streamline the sequencing of new plant genomes. Further mining approaches, including integrative omics analysis, phylogenetics, gene cluster evaluation and comparative genomics were successfully used to puzzle out the evolutionary origins of MIA metabolism and revealed a short-list of high confidence MIA biosynthetic genes for functional validation. CI - (c) 2021 The Authors. Published by Elsevier B.V. on behalf of Research Network of Computational and Structural Biotechnology. FAU - Stander, Emily Amor AU - Stander EA AD - Universite de Tours, EA2106 "Biomolecules et Biotechnologies Vegetales", Tours, France. FAU - Duge de Bernonville, Thomas AU - Duge de Bernonville T AD - Universite de Tours, EA2106 "Biomolecules et Biotechnologies Vegetales", Tours, France. FAU - Papon, Nicolas AU - Papon N AD - Univ Angers, Univ Brest, GEIHP, SFR ICAT, Angers, France. FAU - Courdavault, Vincent AU - Courdavault V AD - Universite de Tours, EA2106 "Biomolecules et Biotechnologies Vegetales", Tours, France. LA - eng PT - Journal Article DEP - 20210622 PL - Netherlands TA - Comput Struct Biotechnol J JT - Computational and structural biotechnology journal JID - 101585369 PMC - PMC8254074 OTO - NOTNLM OT - Biosynthetic pathway OT - Genome mining OT - Medicinal plants OT - Next-generation sequencing OT - Pharmaceuticals OT - Synthetic biology COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/07/15 06:00 MHDA- 2021/07/15 06:01 PMCR- 2021/06/22 CRDT- 2021/07/14 07:04 PHST- 2021/03/11 00:00 [received] PHST- 2021/06/18 00:00 [revised] PHST- 2021/06/18 00:00 [accepted] PHST- 2021/07/14 07:04 [entrez] PHST- 2021/07/15 06:00 [pubmed] PHST- 2021/07/15 06:01 [medline] PHST- 2021/06/22 00:00 [pmc-release] AID - S2001-0370(21)00266-X [pii] AID - 10.1016/j.csbj.2021.06.028 [doi] PST - epublish SO - Comput Struct Biotechnol J. 2021 Jun 22;19:3659-3663. doi: 10.1016/j.csbj.2021.06.028. eCollection 2021.