Fibroblasts transformed into induced thymic epithelial cells (iTEC) in vitro (left, iTEC in green). iTEC transplanted onto the mouse kidney form an organised and functional mini-thymus (right, kidney cells in pink, thymus cells in dark blue)
Scientists have for the first time grown a complex, fully functional organ from scratch in a living animal by transplanting cells that were originally created in a laboratory.
The advance could in future aid the development of ‘lab-grown’ replacement organs.
Researchers from the MRC Centre for Regenerative Medicine, at the University of Edinburgh, took cells called fibroblasts from a mouse embryo and converted them directly into a completely unrelated type of cell – specialised thymus cells- using a technique called ‘reprogramming’. When mixed with other thymus cell types and transplanted into mice, these cells formed a replacement organ that had the same structure, complexity and function as a healthy native adult thymus. The reprogrammed cells were also capable of producing T cells – a type of white blood cell important for fighting infection – in the lab.
The researchers hope that with further refinement their lab-made cells could form the basis of a readily available thymus transplant treatment for people with a weakened immune system. They may also enable the production of patient-matched T cells. The research is published today in the journal Nature Cell Biology.
The Latest on: Lab-grown replacement organs
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The Latest on: Lab-grown replacement organs
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