Compound screening platform targeting nematode parasitism regulators for crop protection
A reverse-1-hybrid yeast screening platform that identifies compounds blocking transcriptional regulators of plant-parasitic nematode parasitism. By targeting the biogenesis machinery shared by hundreds of effectors, this approach aims to deliver novel nematicide actives for crop protection, with planned screening against partner compound libraries.
Overview
This research addresses a critical bottleneck in crop protection: the lack of durable nematicide actives against plant-parasitic nematodes such as cyst nematodes (Heterodera and Globodera spp.). The approach targets the transcriptional regulators that control the production of hundreds of nematode effectors, the molecules that parasites deliver into plants to enable infection. Rather than blocking effectors one at a time, which is inefficient, the platform aims to disrupt the shared regulatory machinery that unites them. Compounds that interfere with these regulators could serve as both molecular tools to probe nematode biology in vivo and as lead candidates for next-generation crop protection solutions.
Technical specifications
Core insight:
- Nematode parasitism depends on hundreds of effector molecules secreted into the host plant
- These effectors share a common biogenesis pathway, representing an Achilles heel of the parasite
- Transcriptional regulators controlling effector gene expression have been identified and validated via RNA interference knockdown, which simultaneously suppresses hundreds of effectors and blocks root infection
Screening platform capabilities:
- A tractable heterologous yeast system that reconstitutes the interaction between transcriptional regulators and effector gene promoters
- A reverse-1-hybrid assay in which transcription factor–promoter complex formation inhibits yeast growth, creating a selection system for disruptors
- Proof-of-concept validation demonstrating that the system successfully selects mutant transcription factors that break the regulatory interaction
- Planned integration with partner compound libraries to identify small molecules that disrupt regulator function
Technology readiness level
The platform is at an early-to-mid discovery stage. RNA interference knockdown studies in cyst nematodes have confirmed that disrupting a single transcriptional regulator suppresses hundreds of effectors and impairs infection, validating the biological rationale. The yeast-based reverse-1-hybrid screening system has been built and validated with mutant transcription factor libraries. The next planned milestone is screening partner compound libraries to identify chemical disruptors of regulator–promoter interactions, which would yield both research tools and potential nematicide lead compounds for future crop protection development.
About University of Cambridge
Cambridge is a collegiate, comprehensive research university that combines broad academic depth with world-class facilities and strong translational activity. Industry engages through co-located labs, a major biomedical campus integrated with an NHS hospital system, and research and technology parks across the Cambridge cluster. Its location in a mature startup and scale-up ecosystem provides ready access to venture funding, prototyping resources, and collaboration with global R&D sites. Research is backed by competitive UKRI council funding and other national sources, with additional support from major charities and European programs. A dedicated technology transfer office supports IP, licensing, and seed investment to accelerate commercialization.
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