Unknown

Dataset Information

0

Antitumor astins originate from the fungal endophyte Cyanodermella asteris living within the medicinal plant Aster tataricus.


ABSTRACT: Medicinal plants are a prolific source of natural products with remarkable chemical and biological properties, many of which have considerable remedial benefits. Numerous medicinal plants are suffering from wildcrafting, and thus biotechnological production processes of their natural products are urgently needed. The plant Aster tataricus is widely used in traditional Chinese medicine and contains unique active ingredients named astins. These are macrocyclic peptides showing promising antitumor activities and usually containing the highly unusual moiety 3,4-dichloroproline. The biosynthetic origins of astins are unknown despite being studied for decades. Here we show that astins are produced by the recently discovered fungal endophyte Cyanodermella asteris We were able to produce astins in reasonable and reproducible amounts using axenic cultures of the endophyte. We identified the biosynthetic gene cluster responsible for astin biosynthesis in the genome of C. asteris and propose a production pathway that is based on a nonribosomal peptide synthetase. Striking differences in the production profiles of endophyte and host plant imply a symbiotic cross-species biosynthesis pathway for astin C derivatives, in which plant enzymes or plant signals are required to trigger the synthesis of plant-exclusive variants such as astin A. Our findings lay the foundation for the sustainable biotechnological production of astins independent from aster plants.

SUBMITTER: Schafhauser T 

PROVIDER: S-EPMC6936678 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature

altmetric image

Publications

Antitumor astins originate from the fungal endophyte <i>Cyanodermella asteris</i> living within the medicinal plant <i>Aster tataricus</i>.

Schafhauser Thomas T   Jahn Linda L   Kirchner Norbert N   Kulik Andreas A   Flor Liane L   Lang Alexander A   Caradec Thibault T   Fewer David P DP   Sivonen Kaarina K   van Berkel Willem J H WJH   Jacques Philippe P   Weber Tilmann T   Gross Harald H   van Pée Karl-Heinz KH   Wohlleben Wolfgang W   Ludwig-Müller Jutta J  

Proceedings of the National Academy of Sciences of the United States of America 20191206 52


Medicinal plants are a prolific source of natural products with remarkable chemical and biological properties, many of which have considerable remedial benefits. Numerous medicinal plants are suffering from wildcrafting, and thus biotechnological production processes of their natural products are urgently needed. The plant <i>Aster tataricus</i> is widely used in traditional Chinese medicine and contains unique active ingredients named astins. These are macrocyclic peptides showing promising ant  ...[more]

Similar Datasets

| PRJNA482224 | ENA
| PRJNA482486 | ENA
| S-EPMC6222381 | biostudies-literature
| S-EPMC4631451 | biostudies-literature
| S-EPMC5800598 | biostudies-literature
| S-EPMC6387216 | biostudies-literature
| S-EPMC9753034 | biostudies-literature
| PRJNA482177 | ENA
| S-EPMC6486242 | biostudies-literature
| S-EPMC6270206 | biostudies-other