Transwell Matrigel System

The Matrigel coating adds an extracellular matrix barrier that cells must interact with before reaching the membrane underside. Cells may need to degrade and traverse this layer, so the measured outcome reflects barrier-crossing behavior rather than movement through an unobstructed porous membrane. This distinction makes the system relevant to invasive processes associated with tissue and basement-membrane penetration.

A chemoattractant placed in the lower chamber provides directional context for cell movement from the upper chamber. Cells that respond to this signal may move through the Matrigel and membrane pores toward the lower compartment. Consequently, the assay can evaluate movement under a defined attraction condition while also capturing the ability to cross an extracellular matrix barrier.

The membrane provides a porous route for movement, whereas the Matrigel coating introduces an extracellular matrix obstacle. Comparing behavior in the presence of that coating with movement through the porous membrane can help relate results to invasion rather than migration alone. The distinction is important when interpreting how cells cross tissue-like barriers in disease studies.

Researchers coat the porous membrane with Matrigel, place cells in the upper chamber, and establish a chemoattractant condition in the lower chamber. During the experiment, cells that respond to the signal may degrade and cross the matrix and membrane. The study then focuses on cells located on the membrane underside, where barrier-crossing behavior can be assessed.

The number of cells reaching the membrane underside provides a quantitative readout of successful passage through both the Matrigel barrier and the porous membrane. Higher or lower counts can therefore indicate differences in invasive behavior under the tested conditions. This outcome also supports comparisons between disease-related cell states, experimental treatments, or other study conditions.

The platform is useful when a study needs to examine how cells cross an extracellular matrix or tissue-like barrier. Medical applications described for it include investigating cancer metastasis, endothelial permeability, therapeutic responses, and other disease mechanisms involving barrier crossing. Its measured endpoint can connect cellular behavior with questions about invasion and treatment-related changes.