Understanding how human life begins is one of the most fundamental challenges in biology. After fertilization, the embryo must successfully implant into the uterus to establish pregnancy — a process that is remarkably complex and still poorly understood. Failures at this stage are a leading cause of infertility and early pregnancy loss. 

To tackle this mystery, Christos Kyprianou has been awarded a Seal of Excellence Postdoctoral Fellowship by the Austrian Academy of Sciences (ÖAW). The fellowship recognizes outstanding applicants to the prestigious Marie Skłodowska-Curie Postdoctoral Fellowship program. Kyprianou’s project received an exceptional evaluation score of 93.2%, just below the highly competitive funding threshold of the European Commission. The Seal of Excellence, issued by the Commission, serves as a mark of quality for such proposals, and the ÖAW supports selected recipients through its own fellowship program. 

Modeling the Beginnings of Life 

Kyprianou’s research focuses on developing advanced models of human embryo implantation. At the heart of this work are blastoids — laboratory-grown structures developed by Nicolas Rivron’s lab at IMBA that mimic early-stage human embryos. By combining these blastoids with uterine organoids and hydrogel-based uterine models, Kyprianou aims to recreate the conditions of implantation in the lab.  

“Using these models, I will observe how embryonic cells interact with the maternal environment, uncover the molecular signals that govern implantation, and identify factors that may promote successful pregnancy,” Kyprianou explains. Beyond answering fundamental biological questions about the earliest stages of development, these models could have important translational applications, offering insights into infertility treatments and recurrent implantation failure. 

The project makes use of organ-on-chip technology developed in collaboration with the Vienna BioCenter Mechanical Engineering Center, enabling precise modeling of embryo–uterus interactions. Single-cell sequencing and advanced imaging will further allow Kyprianou to track cellular and molecular events during implantation. In addition, he will collaborate with researchers at the University of Vienna to extend his experimental findings with predictive modeling of implantation. 

A Mark of Excellence 

For Kyprianou, receiving the fellowship is both recognition and opportunity. “It feels like a second chance for projects that scored very highly but narrowly missed EU funding. The Seal of Excellence confirms the quality of the proposal and gives me the chance to carry it forward here at IMBA,” he explains. 

With the support of the Austrian Academy of Sciences, Kyprianou’s work will shed light on one of life’s most delicate transitions — the moment when an embryo takes hold in the womb — and help pave the way for new strategies in reproductive medicine. 

About Christos Kyprianou 

Christos Kyprianou earned his PhD at the University of Cambridge, where he studied the mechanisms that shape the embryo in the early stages of mouse embryo development. He then worked as a postdoctoral researcher at the Wyss Institute of Harvard Medical School before joining Nicolas Rivron’s lab at IMBA in 2024. 

About the Austrian Academy of Sciences’ Seal of Excellence Postdoctoral Fellowships 

The Seal of Excellence Postdoctoral Fellowship Programme promotes young, promising scientists who were awarded a Seal of Excellence by the European Commission for their research proposals. Awardees receive 2-year funding to develop a novel research project.