Microcephaly Cerebral Organoids for Disease Modelling
Source Dang et al., 2016 · University of California San Diego School of Medicine · 10.1016/j.stem.2016.04.014
Abstract
This protocol describes the generation of human embryonic stem cell-derived cerebral organoids and their infection with Zika virus to model microcephaly-associated neural progenitor depletion. Organoids recapitulate early trimester fetal brain development and show regionalization of forebrain, midbrain, hippocampus and retinal tissues. ZIKV infection causes organoid growth attenuation and neural progenitor cell depletion through activation of the innate immune receptor TLR3.
Protocol overview
25 steps across 5 phases
- a Prepare hESC for differentiation
- b Collect and dissociate hESC colonies
- c Form embryoid bodies by hanging drop method
- d Culture embryoid bodies in hanging drops
- e Transfer embryoid bodies to petri dishes
- a Initiate neural induction
- b Embed organoids in Matrigel
- c Transfer organoids to bioreactors
- d Maintain long-term organoid culture
- a Prepare ZIKV inoculum
- b Collect viral supernatant
- c Quantify viral titer
- d Infect organoids with ZIKV
- e Monitor organoid growth and viral kinetics
- a Treat neurospheres with poly(I:C)
- b Treat organoids with TLR3 competitive inhibitor
- c Co-treat organoids with ZIKV and TLR3 inhibitor
- d Measure organoid size changes
- e Assess immunostaining for ZIKV and neural markers
- a Extract RNA from organoids and neurospheres
- b Quantify viral RNA by one-step RT-qPCR
- c Analyze TLR3 and target gene expression by RT-qPCR
- d Perform RNA-seq transcriptome analysis
- e Conduct gene ontology and pathway analysis
- f Correlate organoid transcriptome with fetal brain development
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Attribution
This SOP was written by Organthis based on the published method in Dang et al., 2016. Once the originating laboratory has confirmed it, the SOP is marked Verified.
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