AN ALTERNATIVE TO TRANSPLANTS

Scientists have grown a tiny liver in experiments which has been hailed as ‘a huge step forward’ for desperately ill patients waiting for a transplant.

The technique that creates man-made tissue could be used to repair diseased and damaged organs – and one day end the agonising and sometimes hopeless wait for a donor.

These advances could also be used to test new medicines, ending the need for risky tests on humans, and to grow tissue for new kidneys, lungs and pancreases.

British scientists have welcomed the research in Japan as holding out ‘promise’ for an alternative to transplants.

More than 7,000 Britons are on the waiting list, including 154 children. Most need kidneys but nearly 500 need a liver and around 250 are waiting for healthy lungs.

Researchers used the three types of cell which generate the liver in a human embryo to grow a tiny piece of tissue in a dish.

It was grafted on to a mouse’s brain, where it linked up to the blood supply and could be monitored as it grew for at least two months. The tissue had many features of a human liver, including the ability to break down drugs.

It also extended the life of rodents with fatal liver disease. The findings were reported in the journal Nature.

Researcher Takanori Takebe said growing patches of liver holds ‘enormous therapeutic potential’.

Dr Dusko Ilic, a stem cell scientist from King’s College London, said: ‘The strategy is very promising and a huge step forward.’

Dr Mathew Smalley, of Cardiff University, said the technique may not be suitable for all transplant patients but still had ‘real promise’.

NHS Blood and Transplant, which is responsible for running the organ donor register, said the research was ‘very exciting’.

But it could take many years to offer ‘widespread, readily-available treatment’, the NHS body said. In the meantime, more organ donors are still needed to cut the number of patients who die waiting for a transplant.

It is hoped the first tests on people could start in a decade.