Neurotrophic factors are known to protect neuronal cell death in several neurodegenerative diseases, both in in vitro and in vivo. They play a key role in development, differentiation, synaptogenesis, and survival of neurons in the brain as well as in the process of their adaptation to external influences. As such, they are essential growth factors in neuroprogenitor cell culture in vitro (Pluripotent stem cells). A sustained release of such factors in culture can be a challenge. Encapuslating them in polymer beads is an answer to this issue, as shown in this post introducing new StemBeads for BDNF and GDNF.