ArticlebioRxiv : the preprint server for biology2026
BDNF Regulates Pituitary Stem Cell Engagement towards precursor state.
Article in bioRxiv : the preprint server for biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Following their engagement towards differentiation, tissue stem cells often transit through a precursor state that is difficult to define because of its transient nature; similarly, the precise role of lineage precursors in implementation of tissue architecture and function is unknown. In the present work, we used two mouse models of deficient feedback regulation to characterize precursors of the pituitary corticotrope lineage that regulates the stress response. Both the POMC knockout and adrenalectomized mouse models develop glucocorticoid deficiency and compensatory accumulation of corticotrope precursors that have so far eluded characterization. We found that pre-corticotrope differentiation depends on the lineage-specific factor Tpit and is repressed by glucocorticoids. We identified brain-derived neurotrophic factor (BDNF) as the signal that engages pituitary stem cells towards differentiation in these models as well as in normal pituitary development. A glucocorticoid-sensitive BDNF autocrine loop active in pre-corticotropes turns these cells into signaling hubs for maintenance of pituitary-adrenal homeostasis.
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