Netrin
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Related Articles from SNS
Netrin-1 drives cell-type-specific plasticity of human dopaminergic neurons during circuit integration in a Parkinsonian model
The survival of transplanted ventral midbrain (vm) dopaminergic neurons (DAn) and their innervation of host striatal tissue are crucial for ameliorating motor symptoms in Parkinson`s disease (PD). However, human pluripotent stem cells (hPSC) show inferior axonal plasticity compared to fetal donor tissue. While modulation of the host environment with trophic cues, such as glial cell-derived neurotrophic factor (GDNF), can improve graft outcomes, these cues lack specificity for DAn, resulting...
Spontaneous neurotransmitter release is regulated by Unc-5
The spontaneous quantal release of single vesicles of neurotransmitter in the absence of an action potential is a universal feature of all neuronal chemical synapses. These miniature events have long been thought to be stochastic and unregulated, leading to measurement of their frequency as a widely employed estimate of the number of synaptic connections within neuronal networks. Here we show using high resolution live imaging of Drosophila adult glutamatergic synapses that the spontaneous...
Whole-genome duplication shaped cell-type evolution in the vertebrate brain
Abstract The complex brains of vertebrates have more cell types than those of their closest relatives. Whole-genome duplications (WGDs) occurred during early vertebrate evolution1, but it is unclear whether the duplicated genes (ohnologues) facilitated cell-type evolution. Here using brain single-cell transcriptomes from five chordates—human2, mouse3, lizard4, lamprey5 and amphioxus—we report that many cell-type families with conserved core transcription factors in vertebrates do not show...