Surprise! Mature neurons can be reprogrammed to become another type of neuron
Reprogramming mature mouse neurons - neuroscience news

While trying to convert supporting brain cells (glia cells) into neurons that produce dopamine, neuroscientists instead reprogrammed mature mouse inhibitory, GABAergic, neurons into dopamine neurons (these are lost in Parkinson’s disease). This came as a big surprise, as until now it was believed that mature neurons cannot be reprogrammed to become some other type of neuron. Researchers use stem cells instead to produce a wide variety of neurons, but apparently this is not always necesssary.

Read the full story: UT Southwestern Medial Center
Scientific publication: Stem Cell Reports