Cause for concern? This research is actually only about a new, but important benchmark!
It appears the University of Sydney did not publish any news release yet!
"... University of Sydney researchers have developed a new way to test how closely lab-grown biological models resemble real human embryos, finding that while some models perform well, none yet fully capture the complexity of early human development.
Research on embryo models derived from stem cells, known as blastoids, offers scientists a way to study the biological events that underpin fertility, pregnancy success and early human development without relying on donated human embryos. ...
Researchers at the University of Sydney have developed a computational framework that helps answer that question. Their study systematically evaluated four leading human blastoid-generation methods and found substantial differences in how faithfully they reproduce the cell types and developmental processes seen in natural human embryos. ..."
From the highlights and abstract:
"Highlights
• An integrated human embryo reference resolves lineage- and stage-specific identities
• Complementary metrics assess multiple dimensions of blastoid fidelity
• Blastoid protocols differ in cell identity, timing, and lineage structure
• Different protocols show complementary strengths in modeling human blastocysts
Summary
Recent generation of stem-cell-derived blastoids that recapitulate the architecture and cellular constitution of the human blastocyst offers an experimental model for the elucidation of the biology of early human development.
To evaluate the fidelity of the blastoids for modeling human blastocysts, we first established a reference map of cell identity and lineage differentiation of the human blastocysts through the integration and curation of single-cell transcriptome data of ex vivo blastocysts profiled at a range of developmental time points in culture.
We next used this reference map to assess the coverage and the authenticity of cell lineages and the progression of lineage differentiation of various blastoid models generated with different cellular sources and protocols.
The reference map generated from this study enables the benchmarking of blastoids that may guide the optimization of the protocol for the generation of high-fidelity blastoid models that faithfully recapitulate the natural human blastocyst."
Graphical abstract
Figure 1 Generation of the human embryo reference
