The Pulse
Colossal’s GenoMorph AI Flags 2,300 Dodo DNA Targets
Colossal Biosciences says its GenoMorph AI platform identified about 2,300 candidate regulatory DNA elements linked to dodo beak traits. The company has not established that the elements cause those traits and says they must undergo experim
AI.info Team · Written with AI ·
“De-extinction is as much a data problem as a biology problem.”
Ben Lamm, CEO and co-founder of Colossal Biosciences
Colossal Biosciences unveiled GenoMorph on October 14, saying the AI platform had identified an estimated 2,300 candidate regulatory DNA elements associated with dodo beak size and shape. The company presented the tool as a way to prioritize possible gene-editing targets when researchers have little ancient genomic material to work with.
The result is a list for testing, not a set of proven genetic instructions for recreating a dodo. Colossal says the analysis does not establish that the identified elements cause the traits; the candidates must first pass functional-validation studies. The company’s announcement describes a research step toward editing the Nicobar pigeon, the dodo’s closest living relative, not the creation of a dodo or a completed de-extinction.
How GenoMorph narrows the search
Regulatory DNA helps control when, where and how strongly genes are activated. Rather than focusing only on genes that encode proteins, GenoMorph aims to identify regulatory elements that may influence physical traits, including the size and structure of a bird’s skull and beak.
Colossal says it built the platform using an avian regulatory atlas made from hundreds of samples from chickens, quail, ducks and pigeons. The samples covered six embryonic-development stages and three regions of the developing face. The team combined those data with genome information and CT-derived skull measurements from more than 70 bird species, using 541 anatomical landmarks to describe skull shape.
The company’s release divides the candidate set into 653 elements associated with beak size and 1,698 associated with beak thickness and breadth. Those figures describe predicted associations, not confirmed causal effects. Elements that prove influential in laboratory studies may then be considered for precision editing in Nicobar pigeon cells.
The dodo genome still has gaps
Colossal says its dodo genome assembly has 95% of its bases covered at least fivefold, meaning five or more unique ancient DNA molecules map to more than 95% of the genome’s letters. It reports average coverage of 65-fold. The company says it adapted an iterative assembly method developed through its dire wolf program: newly mapped dodo sequences update the reference used to map the ancient fragments again.
The company says this approach helps recover fragments that conventional mapping against a living relative’s genome might fail to align. But the genome work is still under analysis. Beth Shapiro, Colossal’s chief science officer, said the genome paper has not yet gone through peer review and that the company expects more work to follow.
From predictions to pigeon-cell tests
Colossal also reported that its Texas colony of Nicobar pigeons has grown to 36 birds and that it has derived primordial germ cells from the birds’ eggs. Those cells develop into sperm and eggs, making them relevant to the company’s plan to create heritable edits. The company says candidate changes could be tested in cells before being carried into future generations.
Another piece of the pipeline is an embryonic stem-cell platform that Colossal says has produced viable chimeric chickens. The company is expanding the cell-culture work to pigeons, where edited cells could help researchers assess whether a predicted edit affects a bird’s physical traits before attempting to edit germ cells.
Colossal also says it has developed a lipid-nanoparticle delivery system for introducing DNA, RNA and CRISPR tools into developing bird embryos. In experiments, the company reports that editing Runx2, a regulator of bone development, produced a craniofacial phenotype; it says the system has also been used in rock dove and duck embryos. A manuscript describing the delivery platform has been submitted to bioRxiv.
GenoMorph’s immediate value will depend on what survives those tests. Colossal has produced a substantial shortlist from comparative bird data, but the company’s own account draws a clear line between prediction and proof: the 2,300 candidates are starting points for experiments, not validated dodo traits.