Brain Organoids for Disease Modelling (2011)
Source Suga et al., 2011 · RIKEN Center for Developmental Biology, Kobe, Japan · 10.1038/nature10637
Abstract
This protocol describes the generation of functional three-dimensional adenohypophysis (anterior pituitary) tissue from mouse embryonic stem cells in culture. Through controlled spatial arrangement of rostral head ectoderm and hypothalamic neuroectoderm, combined with hedgehog signaling, Rathke's-pouch-like structures self-form and differentiate into hormone-producing endocrine cells including corticotrophs and somatotrophs. The resulting tissue exhibits functional hormone secretion and can rescue glucocorticoid levels in hypopituitary mice.
Protocol overview
27 steps across 7 phases
- a Maintain mouse ES cells in maintenance medium
- b Dissociate ES cells to single cells
- a Prepare growth-factor-free chemically defined medium (gfCDM)
- b Reaggregate dissociated ES cells at 10,000 cells per well
- c Add Smoothened agonist (SAG) to culture medium
- a Culture aggregates in LCA-SAG conditions (days 0-10)
- b Observe morphogenesis of Lim3+ structures (days 6-13)
- c Raise oxygen concentration to 40% from day 10 onwards
- a Prepare Notch inhibitor (DAPT) treatment
- b Treat aggregates with DAPT on days 18-19
- c Continue culture to day 21 for ACTH+ cell accumulation
- a Prepare BIO (Wnt agonist) treatment for Pit1+ intermediate precursors
- b Treat with BIO on days 16-18 for Pit1 induction
- c Differentiate GH+ somatotrophs with glucocorticoid and insulin
- d Differentiate prolactin+ lactotrophs with oestradiol and insulin
- e Optional: Culture with PA6 stromal cell-conditioned medium for gonadotroph and TSH differentiation
- a Collect SAG+DAPT-treated aggregates for secretion assay
- b Rinse aggregates and pre-incubate
- c Stimulate with Corticotropin-Releasing Hormone (CRH)
- d Collect supernatant and measure ACTH by ELISA
- e Optional: Test glucocorticoid-mediated feedback inhibition
- a Perform surgical hypophysectomy in ICR mice
- b Prepare graft aggregates and dexamethasone supplementation
- c Perform ectopic transplantation under kidney capsule
- d Assess CRH-stimulated ACTH release at 7 days post-transplant
- e Measure basal ACTH and corticosterone levels
- f Perform behavioral and survival assessments
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Attribution
This SOP was written by Organthis based on the published method in Suga et al., 2011. Once the originating laboratory has confirmed it, the SOP is marked Verified.
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