Science Direct has a new paper on a study looking for better ways to treat a condition called liver fibrosis. Liver fibrosis is a disease where your liver gets damaged and becomes full of scars. This happens due to long-term inflammation and release of certain proteins that cause scarring. This is a major global health problem and often leads to liver failure. So far, we don’t have very effective treatments for this disease.
This study is focused on a tiny molecule called miR-124. There’s evidence that when this molecule isn’t working correctly, it can contribute to liver disease getting worse. The researchers wanted to see if they could improve liver fibrosis by delivering miR-124 to the liver.
The researchers chose to deliver miR-124 using a method involving something called “exosomes”. Exosomes are tiny packets that cells use to transfer material to each other. These specific exosomes were produced by a type of stem cell found in a substance called Wharton’s jelly (which is part of the umbilical cord). These stem cells and their exosomes have properties that could be useful in treating diseases like liver fibrosis.
The researchers created a model of liver fibrosis in mice by exposing them to a chemical called carbon tetrachloride for 6 weeks. They then treated these mice with the stem cell-derived exosomes, some of which were enriched with miR-124, for three weeks. They used various lab techniques to measure how much fibrosis and inflammation was present in the liver and also looked at the spleen’s inflammatory status.
The results showed that both the exosomes and the miR-124-enriched exosomes reduced the accumulation of collagen (a protein that contributes to scarring) and decreased inflammation. Interestingly, the exosomes containing miR-124 were even more effective than the ones without it. Additionally, they found that these treatments could change the behavior of certain immune cells in the spleen, shifting them from a more inflammatory state to a less inflammatory one.
In conclusion, this study shows that exosomes from these specific stem cells can help reduce inflammation and fibrosis in a mouse model of liver disease. And if these exosomes carry miR-124, they become even more effective. This suggests that miR-124-enriched exosomes could potentially be a promising new treatment for liver fibrosis. However, more research is needed to see if these results hold up in humans.