MilliporeSigma
  • Differential fate between oxytocin and vasopressin cells in the developing mouse brain.

Differential fate between oxytocin and vasopressin cells in the developing mouse brain.

iScience (2022-01-15)
Amelie Soumier, Marie Habart, Guillaume Lio, Caroline Demily, Angela Sirigu
ABSTRACT

Oxytocin (OXT) and arginine vasopressin (AVP), two neuropeptides involved in socio-emotional behaviors have been anatomically defined in the adult brain. Yet their spatial organization during postnatal development is not clearly defined. We built a developmental atlas using 3D imaging of cleared immunolabeled tissue over four early postnatal (P) stages, from birth (P0, P3, P7, P14) to young adulthood (≥P56). Our atlas-based mapping revealed that the number of OXT neurons doubles according to unique temporal dynamics in selective hypothalamic regions, namely, the periventricular and paraventricular nuclei, and in a novel location we named the antero-lateral preoptic. In the paraventricular nucleus, single-cell densities and fluorescence analysis demonstrated selective expansion of OXT cells in the antero-ventral division, whereas the postero-dorsal division contained cells present at birth. No changes were observed for AVP neurons. Our findings show the coexisting of innate and plastic OXT/AVP brain circuits probably triggered by environmental adaptation of the social brain.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Anti-Neurophysin 2/NP-AVP Antibody, clone PS 41, clone PS 41, from mouse