Saturday, February 4, 2017

Sex is in the details! Interview with Esther Saiz on gender influencing neuronal circuitry.

'Men Are from Mars, Women Are from Venus.' But what differs between Mars and Venus. According to the author of the book, John Gray, the difference lies in the psyche. These differences could stem from different wiring inside the brain of individual sexes. With 100 billion neurons in the brain of typical human, and maybe as many as 1,000 trillion total connections, its a daunting task to answer this question.

Enter Esther and colleagues with their powerful model system C. elegans, which is a small transparent worm whose each and every cell in the body is accurately mapped along with most of cell's interacting partners. When they looked carefully at one neuron that differed between the sexes in C. elegans, they found a machinery that influenced the sex-specific maturation and behavior of that cell. Strikingly, this influence was not due to sexual hormones, but was wired inside the identity of the cell. So, just changing this one cell changed certain behaviors of the animal from one sex to another! To know more, please listen to Esther.


For further information, please refer to:
Sexually Dimorphic Differentiation of a C. elegans Hub Neuron Is Cell Autonomously Controlled by a Conserved Transcription Factor.
Saiz et al., Current Biology, 2017.
BioRxiv Link.

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