A Micropatterned Human-Specific Neuroepithelial Tissue for Modeling Gene and Drug-Induced Neurodevelopmental Defects

Geetika Sahni, Shu-Yung Chang, Jeremy Teo Choon Meng, Jerome Zu Yao Tan, Jean Jacques Clement Fatien, Carine Bonnard, Kagistia Hana Utami, Puck Wee Chan, Thong Teck Tan, Umut Altunoglu, H. lya Kayserili, Mahmoud Pouladi, Bruno Reversade, Yi-Chin Toh*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The generation of structurally standardized human pluripotent stem cell (hPSC)-derived neural embryonic tissues has the potential to model genetic and environmental mediators of early neurodevelopmental defects. Current neural patterning systems have so far focused on directing cell fate specification spatio-temporally but not morphogenetic processes. Here, the formation of a structurally reproducible and highly-organized neuroepithelium (NE) tissue is directed from hPSCs, which recapitulates morphogenetic cellular processes relevant to early neurulation. These include having a continuous, polarized epithelium and a distinct invagination-like folding, where primitive ectodermal cells undergo E-to-N-cadherin switching and apical constriction as they acquire a NE fate. This is accomplished by spatio-temporal patterning of the mesoendoderm, which guides the development and self-organization of the adjacent primitive ectoderm into the NE. It is uncovered that TGFβ signaling emanating from endodermal cells support tissue folding of the prospective NE. Evaluation of NE tissue structural dysmorphia, which is uniquely achievable in the model, enables the detection of apical constriction and cell adhesion dysfunctions in patient-derived hPSCs as well as differentiating between different classes of neural tube defect-inducing drugs.
Original languageEnglish
JournalAdvanced Science
Early online date2021
DOIs
Publication statusE-pub ahead of print - 2021
Externally publishedYes

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