Genetic Regulation in Fission Yeast Systems

The fission yeast Schizosaccharomyces pombe has emerged as a powerful system to dissect the fundamental principles of gene regulation in eukaryotes. Its simple genome, well-conserved cell-cycle machinery and tractable genetics enable high-resolution analysis of transcriptional networks controlling growth, stress adaptation and differentiation. Nutrient availability modulates a web of signalling pathways that converge on key transcription factors, chromatin-remodelling complexes and post-translational regulators to tune gene expression. Carbon and nitrogen sensing pathways, for example, orchestrate the switch between fermentative and respiratory metabolism through coordinated activation or repression of metabolic genes. Concurrently, cell-cycle checkpoints deploy cyclin-dependent kinases and their inhibitors to enforce orderly progression through G1, S, G2 and mitosis. Epigenetic mechanisms, including histone acetylation and deacetylation, add a further layer of control by shaping chromatin accessibility at target loci. Combined approaches—genome-wide expression profiling, targeted mutagenesis and live-cell imaging—have revealed both global patterns and cis-regulatory modules that underlie dynamic responses to external cues. Insights gained in fission yeast continue to inform our understanding of conserved regulatory circuits in higher eukaryotes and drive advances in synthetic biology.

Research from Nature Portfolio

Recent work has expanded the genetic toolkit for precise chromosomal manipulation in fission yeast, enabling more versatile studies of gene function and regulation. By coupling genome editing with novel host-vector systems based on lys1 and arg3 auxotrophic markers, researchers have generated a series of integration plasmids that complement specific amino-acid requirements when inserted at defined loci. This platform allows simultaneous expression of multiple fluorescently tagged proteins, facilitating combinatorial functional assays and live-cell localisation studies. The new vectors integrate seamlessly with existing leu1- and ura4-based tools, greatly broadening the capacity for heterologous gene expression, pathway reconstitution and synthetic circuit construction in Schizosaccharomyces pombe.

Genetic Regulation in Fission Yeast Systems publication trend

The graph below shows the total number of articles in genetic regulation in fission yeast systems across all publications each year (not limited to Nature Index journals).

Technical terms

Auxotrophic marker: A mutated gene used as a selectable trait, requiring supplementation of the corresponding nutrient unless complemented by an integrated plasmid.

Heterologous expression: The production of a gene product from one organism within a different host species.

CRISPR/Cas9: A genome-editing system that uses a guide RNA to target the Cas9 nuclease to specific DNA sequences for cleavage and subsequent repair or integration.

Oxylipin: A lipid-derived signalling molecule formed by oxygenation of fatty acids, involved in intercellular communication and metabolic regulation.

Cyclin-dependent kinase (CDK): An enzyme that phosphorylates target proteins to control cell-cycle transitions and is regulated by cyclin binding and inhibitors.

References

1. Nitrogen signaling factor triggers a respiration-like gene expression program in fission yeast. The EMBO Journal (2024).
2. A set of vectors and strains for chromosomal integration in fission yeast. Scientific Reports (2023).
3. An ecl family gene ecl3+ is induced by phosphate starvation and contributes to sexual differentiation in fission yeast. Journal of Cell Science (2023).