Microfluidic array for three-dimensional perfusion culture of human mammary epithelial cells.

The ability to culture cells in three dimensional extracellular matrix (3D ECM) has proven to be an important tool for laboratory biology. Here, we demonstrate a microfluidic perfusion array on a 96-well plate format capable of long term 3D ECM culture within biomimetic microchambers. The array consists of 32 independent flow units, each with a 4 μl open-top culture chamber, and 350 μl inlet and outlet wells. Perfusion is generated using gravity and surface tension forces, allowing the array to be operated without any external pumps. MCF-10A mammary epithelial cells cultured in Matrigel in the microfluidic array exhibit acinus morphology over 9 days consistent with previous literature. We further demonstrated the application of the microfluidic array for in vitro anti-cancer drug screening.