Vascularization of iNSC spheroid in a 3D spheroid‐on‐a‐chip platform enhances neural maturation
Nari Shin, Youngtaek Kim, Jihoon Ko, Soon Won Choi, Sujin Hyung, SeungEun Lee, Seunghyuk Park, Jiyoung Song, Noo Li Jeon, Kyung‐Sun Kang
Abstract
In vitro platforms for studying the human brain have been developed, and brain organoids derived from stem cells have been studied. However, current organoid models lack three-dimensional (3D) vascular networks, limiting organoid proliferation, differentiation, and apoptosis. In this study, we created a 3D model of vascularized spheroid cells using an injection-molded microfluidic chip. We cocultured spheroids derived from induced neural stem cells (iNSCs) with perfusable blood vessels. Gene expression analysis and immunostaining revealed that the vascular network greatly enhanced spheroid differentiation and reduced apoptosis. This platform can be used to further study the functional and structural interactions between blood vessels and neural spheroids, and ultimately to simulate brain development and disease.