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Sci Adv. 2019 Mar 13;5(3):eaau7375. doi: 10.1126/sciadv.aau7375. eCollection 2019 Mar.

Human pluripotent stem cell-derived brain pericyte-like cells induce blood-brain barrier properties.

Author information

1
Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, USA.
2
Department of Orthopedics and Rehabilitation, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA.
3
Departments of Neuroscience and Pharmacology, University of California, San Diego, San Diego, CA, USA.

Abstract

Brain pericytes play important roles in the formation and maintenance of the neurovascular unit (NVU), and their dysfunction has been implicated in central nervous system disorders. While human pluripotent stem cells (hPSCs) have been used to model other NVU cell types, including brain microvascular endothelial cells (BMECs), astrocytes, and neurons, hPSC-derived brain pericyte-like cells have not been integrated into these models. In this study, we generated neural crest stem cells (NCSCs), the embryonic precursor to forebrain pericytes, from hPSCs and subsequently differentiated NCSCs to brain pericyte-like cells. These cells closely resembled primary human brain pericytes and self-assembled with endothelial cells. The brain pericyte-like cells induced blood-brain barrier properties in BMECs, including barrier enhancement and reduced transcytosis. Last, brain pericyte-like cells were incorporated with iPSC-derived BMECs, astrocytes, and neurons to form an isogenic human model that should prove useful for the study of the NVU.

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