Automated Microfluidic Vitrification in Assisted Reproductive Technology
Summary
Vitrification is a cornerstone of modern assisted reproductive technology, enabling long-term preservation of oocytes and embryos by rapid cooling that avoids ice crystal formation. Traditional vitrification protocols rely on intricate manual handling of specimens through sequential cryoprotectant treatments, demanding exceptional technical skill and exposing cells to variable osmotic stresses. Automated microfluidic vitrification platforms integrate microscale fluid control with on-chip manipulation to standardise cryoprotectant exchange, reduce handling errors and minimise specimen volume. Approaches range from channel-based systems that generate concentration gradients to digital microfluidic formats that dispense and transport individual droplets through a defined sequence of washing, equilibration and loading onto a carrier for liquid nitrogen storage. By delivering precise timing, reproducible flow rates and real-time monitoring, these systems promise enhanced survival rates, improved post-thaw function and scalability for both clinical and agricultural applications. The convergence of microfabrication techniques, advanced materials and automation heralds a new era in fertility preservation, with potential to broaden access, lower costs and support global reproductive health initiatives.
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Automated Microfluidic Vitrification in Assisted Reproductive Technology publication trend
The graph below shows the total number of articles in automated microfluidic vitrification in assisted reproductive technology across all publications each year (not limited to Nature Index journals).
Technical terms
Vitrification: Ultra-fast cryopreservation method that solidifies biological samples into a glass-like state without ice crystal formation.
Cryoprotectant agent (CPA): Chemical additive that protects cells from damage caused by ice and osmotic stress during freezing.
Microfluidics: Technology for precise control and manipulation of minute fluid volumes in micro-scale channels.
Digital microfluidics: Technique that employs electric fields to actuate discrete droplets on a planar surface for fluid handling.
References
- Development of an Open Microfluidic Platform for Oocyte One-Stop Vitrification with Cryotop Method. Biosensors (2022).
- Digital Microfluidic Processing of Mammalian Embryos for Vitrification. PLOS ONE (2014).
- Vitrification within a nanoliter volume: oocyte and embryo cryopreservation within a 3D photopolymerized device. Journal of Assisted Reproduction and Genetics (2022).
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