Scientists from the Salk Institute published a study in Nature communications recently that focused on enhancing muscle regeneration in mice using various molecular compounds.
Loss of muscle mass occurs with age that can cause significant disability for older people. With age, there is loss of muscle progenitor cells that results in muscle degeneration.
In this study, scientists from Salk Institute, the Catholic University of Murcia in Spain, and CEMTRO clinic in Spain used specific molecular compounds called Yamanaka factors to study their impact on muscle regeneration.
Yamanaka factors are transcription factors that affect the translation of DNA into proteins. In this study, scientists used two mouse models to study the muscle stem cell-specific or niche-specific changes after the addition of Yamanaka factors. The study was performed on younger mice to study the effects after the addition of mentioned factors.
In the myofiber model, Yamanaka factors enhanced regeneration of muscle in mice by reducing levels of Wnt4 that resulted in activation of satellite cells. In the satellite cell model, the activation of muscle regeneration did not occur.
The study suggested that Wnt4 plays an important role in muscle regeneration. According to researchers, these observations can lead to new treatment for muscle loss and can provide a solution for older people and athletes. This study presents results from an experiment done on mice and there is still a long way to go towards using these technologies to treat muscle loss in humans.
Researchers mentioned that their lab developed a gene-editing tool recently. This gene-editing tool can be used to reduce the levels of Wnt4 in skeletal muscle and hence impair the communication between Wnt4 and muscle stem cells. Furthermore, scientists are also working on other techniques using mRNA and genetic engineering and they believe that these methods can provide us with different approaches to enhance muscle and organ regeneration.