Functional, Lab-grown Human Liver Model Developed

Scientists develop lab-grown human liver model, the finding represents a milestone in work to create truly functional bioengineered liver tissue for transplantation.

Scientists develop most sophisticated human liver model in the laboratory that better mimics foetal development and function of the human liver, revealed lead researcher Shay Soker, Professor at Wake Forest University in North Carolina, US.

The liver organoids, made with human cells, are less than one-third inch in diameter. These will also help advance scientists understanding about bile duct formation.

Adult to Child Living Donor Liver Transplantation
Adult to child liver transplantation refers to removing a small segment of liver from an adult and transplanting this segment into a child.

‘New functional model of a human liver developed in the lab, could help scientists improve treatment for liver diseases. ’

"We expect these organoids to advance our understanding of how liver diseases -- especially congenital diseases -- start and progress so improved treatments can be developed," Soker added.

To make the organoids, scientists allowed foetal liver progenitor cells, an immature cell that is destined to become a specialised liver cell, to self-assemble on a small disc.

The discs are made of ferret liver that has been processed to remove all of the animal's cells. The resulting organoids, which assemble within two to three weeks, are the first to model actual human liver development.

Common Types of Liver diseases leading to Liver Transplantation
Liver disease that ends in liver failure (end stage liver disease), disrupting several important metabolic functions needs liver transplant for patient survival.

In the research, reported in the journal Hepatology, the scientists showed that these organoids generated hepatocytes -- the main functional cells of the liver.

Moreover, the study also shows the stepwise maturation of bile ducts exactly as can be observed in the human foetal liver.

Quiz on Liver
How many of us know that the liver is a vital organ the size of an American Football? To understand more about the liver and its functions spend a few minutes taking part in this quiz.

Bile ducts carry bile -- a fluid that is secreted by the liver and collected in the gallbladder to digest fats.

This model of bile ductal development can potentially be used to study the hereditary disease biliary atresia that occurs in infants.

Test Your Knowledge on Liver Cancer
Primary hepatocellular carcinoma is a cancer that starts in the liver. The liver is the largest organ in the body situated in the upper right quadrant of the abdomen. The liver is also a common site for cancer deposits (metastases) from other organs. This is referred to as secondary liver cancer and is more common than primary liver cancer.

"Altogether, the team has created a laboratory model of human liver development and disease that will help advance our understanding about bile duct formation," said Pedro Baptista, from the varsity.

Source-IANS