Stem cell models of human spine development unveiled

Scientists have created the first lab-dish models of the cellular clock, where each ‘tick’ stimulates the formation of the vertebra, which uses stem cells derived from adult human tissue. Over 20 years ago, Olivier Pourquié’s lab at Harvard University, US discovered a cellular clock in chicken embryos where each ‘tick’ stimulates the formation of a structure called a somite that ultimately becomes a vertebra. Now, Pourquié has led one of two teams to create the first lab-dish models of the segmentation clock that use stem cells derived from adult human tissue.