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Complex sperm collective motion under physiologically relevant conditions

Project description

Understanding collective sperm movement

The successful outcome of fertilisation does not solely rely on individual sperm cells but is significantly influenced by their collective movement patterns within the complex female reproductive tract. This confined and fluid-like environment impacts how sperm form groups, streams, or swirling patterns. With the support of the Marie Skłodowska-Curie Actions programme, the Spermotion project aims to delineate the collective behaviour of sperm cells. The research methodology involves the utilisation of microfluidic devices to recreate the native conditions of the reproductive tract, enabling the monitoring of sperm movement. Using advanced imaging and artificial intelligence, researchers will study how sperm from different individuals interact, uncovering cooperative or competitive patterns. The findings could improve fertility diagnostics and support applications in biodiversity conservation.

Objective

Collective motion of spermatozoa within the confined, viscoelastic milieu of the female reproductive tract is an underexplored determinant of fertilisation success. This MSCA project will uncover the physical rules that organise dense sperm suspensions into clusters, streams and turbulence-like flows, and test how environmental architecture and inter-ejaculate competition modulate these states. We will engineer physiologically inspired microfluidic landscapes with controlled curvature, viscosity/viscoelastic gradients and shear; record dynamics via phase-contrast and dual-colour fluorescence at high spatiotemporal resolution; and quantify both flow fields (PIV/PTV) and single-cell trajectories using deep-learning trackers. Mixed-donor experiments with spectrally barcoded sperm will reveal whether genetically distinct populations interact neutrally, cooperatively or competitively under confinement. These data will drive multi-scale theory—2D/3D agent-based simulations with hydrodynamic/alignment interactions and coarse-grained continuum models—closing the loop between prediction and device design. Hosted at Warwick’s CMCB (Kantsler: microfluidics; Turner: theory), the work will deliver open datasets, code and validated metrics of collective motility, and seed translation with Cytoswim toward diagnostics that assess “interaction-driven quality” rather than isolated single-cell parameters. Beyond fundamental advances in wet active matter, the outcomes will support animal fertility management in agriculture and conservation, aligning with EU priorities on food security and biodiversity.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

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Call for proposal

(opens in new window) HORIZON-MSCA-2025-PF

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Coordinator

UNIVERSITY OF WARWICK
Net EU contribution
€ 276 187,92
Address
KIRBY CORNER ROAD UNIVERSITY HOUSE
CV4 8UW COVENTRY
United Kingdom
Region
West Midlands (England) West Midlands Coventry
Activity type
Higher or Secondary Education Establishments
Links
Total cost
No data