BMP Signaling and Synaptic Development

2012 ◽  
Keyword(s):  
Bmp Signaling ◽  
Synaptic Development

scholarly journals Mayday sustains trans-synaptic BMP signaling required for synaptic maintenance with age

eLife ◽  
2021 ◽  
Vol 10 ◽  
Author(s):  
Jessica M Sidisky ◽  
Daniel Weaver ◽  
Sarrah Hussain ◽  
Meryem Okumus ◽  
Russell Caratenuto ◽  
...  
Keyword(s):  
Motor Neurons ◽  
Structure And Function ◽  
Bmp Signaling ◽  
Synaptic Development ◽  
Uncharacterized Gene ◽  
Progressive Loss ◽  
Synaptic Structure ◽  
Nervous System Function ◽  
And Function ◽  
Golgi Network

Maintaining synaptic structure and function over time is vital for overall nervous system function and survival. The processes that underly synaptic development are well understood. However, the mechanisms responsible for sustaining synapses throughout the lifespan of an organism are poorly understood. Here, we demonstrate that a previously uncharacterized gene, CG31475, regulates synaptic maintenance in adult Drosophila NMJs. We named CG31475 mayday due to the progressive loss of flight ability and synapse architecture with age. Mayday is functionally homologous to the human protein Cab45, which sorts secretory cargo from the Trans Golgi Network (TGN). We find that Mayday is required to maintain trans-synaptic BMP signaling at adult NMJs in order to sustain proper synaptic structure and function. Finally, we show that mutations in mayday result in the loss of both presynaptic motor neurons as well as postsynaptic muscles, highlighting the importance of maintaining synaptic integrity for cell viability.

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