Stem Cell Reports (Jan 2019)
Engineered Microenvironment for Manufacturing Human Pluripotent Stem Cell-Derived Vascular Smooth Muscle Cells
Abstract
Summary: Human pluripotent stem cell-derived vascular smooth muscle cells (hPSC-VSMCs) are of great value for disease modeling, drug screening, cell therapies, and tissue engineering. However, producing a high quantity of hPSC-VSMCs with current cell culture technologies remains very challenging. Here, we report a scalable method for manufacturing hPSC-VSMCs in alginate hydrogel microtubes (i.e., AlgTubes), which protect cells from hydrodynamic stresses and limit cell mass to <400 μm to ensure efficient mass transport. The tubes provide cells a friendly microenvironment, leading to extremely high culture efficiency. We have shown that hPSC-VSMCs can be generated in 10 days with high viability, high purity, and high yield (∼5.0 × 108 cells/mL). Phenotype and gene expression showed that VSMCs made in AlgTubes and VSMCs made in 2D cultures were similar overall. However, AlgTube-VSMCs had higher expression of genes related to vasculature development and angiogenesis, and 2D-VSMCs had higher expression of genes related to cell death and biosynthetic processes. : Human pluripotent stem cell-derived vascular smooth muscle cells (hPSC-VSMCs) are of great value for regenerative medicine. In this article, Lei and colleagues describe a method to manufacture hPSC-VSMCs in alginate hydrogel microtubes, which provide cells a cell-friendly microenvironment, leading to extremely high culture efficiency. The method is scalable and has potential to make hPSC-VSMCs broadly accessible. Keywords: human pluripotent stem cells, alginate hydrogel tube, 3D culture, vascular smooth muscle cells