Engineering Neurovascular Unit and Blood-Brain Barrier for Ischemic Stroke Modeling.

Ischemic stroke is a primary vascular disease of the central nervous system characterized by high morbidity, mortality, and healthcare costs. As conventional ischemic stroke models fail to predict therapeutic efficacy, in vitro neurovascular unit (NVU)/blood-brain barrier (BBB) models are utilized to model ischemic stroke through replicating the cell-cell interactions and mimicking the blood flow and anatomical features of the brain. Here, an overview of transwell, microfluidic, and hydrogel-based NVU/BBB models is provided, including cell types, engineering approaches, and the simulation of physiological and pathological features of NVU/BBB after ischemic stroke. Collectively, recent advances in 3D-printed NVU models are emphasized, which are anticipated to be a promising system for more reliable mechanistic studies and preclinical drug screenings that can eventually accelerate the drug development process for the ischemic stroke therapy.