Dinosaur collagen used to create one-of-a-kind handbag

Bag made with T rex protein fragments goes on display in Amsterdam, set for auction over $500,000

Visitors look at a 67 million year-old skeleton of a Tyrannosaurus Rex dinosaur, named Trix, during the first day of the exhibition

Scientists and designers unveiled on Thursday a handbag made with collagen derived from Tyrannosaurus rex fossils from the US in a unique creation intended to demonstrate the value of laboratory-grown leather.

The teal-coloured bag will be displayed on a rock in a cage under a replica of a T rex at Amsterdam's Art Zoo museum until May 11 after which it will be auctioned, with a reported starting price of more than half a million dollars.

Scientists behind the initiative said the material was developed using ancient protein fragments extracted from dinosaur remains that were inserted into an unidentified animal's cell to produce collagen that was turned into leather.

"There were a lot of technical challenges," said Thomas Mitchell, CEO of The Organoid Company, one of three companies behind the so-called "T rex leather" bag.

Genomic engineering firm Organoid and creative agency VML, another of the firms behind the project, previously collaborated on creating a giant meatball in 2023 by combining the DNA of a woolly mammoth with sheep cells.

Che Connon, CEO of Lab‑Grown Leather Ltd. that worked on producing the leather for the handbag from the engineered collagen, said the T rex origin gave it extra "oomph".

"It's not just about a green alternative to leather, it's a technological upgrade," Connon said of lab-grown leather.

Scepticism

Some scientists outside the project have expressed scepticism about the term "T rex leather", saying material from other animals would be needed.

Dutch vertebrate paleontologist Melanie During, of the Vrije Universiteit Amsterdam, said collagen can persist in dinosaur bones only as fragmented traces that cannot be used to recreate T rex skin or leather.

Thomas R Holtz Jr, a paleontologist at the University of Maryland, similarly said any collagen identified in T rex fossils comes from inside bone, not skin, and that even perfectly matching proteins would lack the larger‑scale fibre organisation that gives animal leather its distinctive properties.

"I would say that when you do something new for the first time, there is always criticism," Mitchell said in response.

"And I think we're really grateful for that criticism. It's the bedrock of scientific exploration ... I think this is the closest anyone has gotten and will probably ever get to create something that's T rex."