Project description
Regulation of Streptomyces metabolism opens new drug discovery paths
The bacterial genus Streptomyces is known for its capacity to produce natural and therapeutic compounds. Genomic annotation of Streptomyces has indicated the presence of cryptic secondary metabolite pathways, not expressed in the traditional screening programmes. Scientists of the EU-funded StrepCryptPath project have identified a Streptomyces coelicolor mutant strain that lacks a specific regulator of differentiation and secondary metabolism. This strain can produce secondary metabolites during its whole developmental cycle, including compounds encoded by several cryptic pathways. Therefore, researchers are developing strategies to inactivate the conserved regulator in Streptomyces, as an approach to activate Streptomyces' secondary metabolism. If successful, this approach could revolutionise the discovery of new secondary metabolites.
Objective
The aim of the StrepCrypPath is to test the industrial potential of a new approach to enhance Streptomyces secondary metabolism, discovered in our ERC-StG Strp-differentiation (280304) project. We discovered a pleiotropic regulator of differentiation and secondary metabolism in the S. coelicolor model strain. The S. coelicolor strain lacking this regulator is the first Streptomyces reported to produce secondary metabolites during its whole developmental cycle, including germination, the exponential growth phase and the stationary stage. S. coelicolor encodes 30 secondary metabolites, but only two are produced in high amounts under the culture conditions used in our lab. The expression of 15 secondary metabolite clusters (50% of the total), including 6 predicted to participate in secondary metabolite biosynthesis never observed in the lab (cryptic pathways), is activated/enhanced, in our mutant.
The gene encoding this new regulator is highly conserved in Streptomyces. We will explore if the inactivation of the orthologues of this regulatory gene in industrial streptomycetes causes the same phenotype observed in S. coelicolor: secondary metabolism and cryptic pathway activation. We will create integrative conjugative plasmids harbouring antisense mRNAs to inactivate this gene. We do not expect that this method will enhance and/or activate all secondary metabolite clusters. However, if as it happens in S. coelicolor, we can activate/enhance 50% of the secondary metabolite pathways, including several cryptic pathways, in any streptomycete, we can revolutionise the screening for new secondary metabolites from streptomycetes.
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Keywords
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC)
MAIN PROGRAMME
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
ERC-POC - Proof of Concept Grant
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) ERC-2018-PoC
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
33003 OVIEDO
Spain
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