A wound healing assay is a 2D cell migration assay in which a defined gap is created within a confluent cell monolayer. Over time, cells migrate into this gap, and the reduction of the cell-free area is measured as an indicator of migration. The primary readout is gap closure rate, but additional parameters such as migration speed, collective behavior, and cell morphology can also be analyzed.

A gap can be generated either mechanically by scratching the monolayer or by using a physical insert that prevents cell growth in a defined region. The ibidi Culture-Inserts create highly reproducible and clean 500 µm gaps without damaging the surface or the cells. After removal of the insert, two precisely defined cell fronts migrate toward each other, enabling consistent quantitative analysis.

In a traditional scratch assay, gap width varies depending on pressure and tip size, and the surface coating may be damaged. This can affect cell adhesion and migration behavior. In contrast, the ibidi Culture-Inserts generate defined gaps without mechanical stress or debris, improving reproducibility and reducing experimental variability.

Yes. The Culture-Insert 3 Well and Culture-Insert 4 Well allow seeding of different cell types or treatments within the same vessel. This enables co-culture migration assays and 2D invasion experiments, where interactions between tumor cells, fibroblasts, or immune cells can be studied under identical culture conditions.

Migration can be analyzed by taking images at defined time points or by performing continuous live cell imaging. Using the Stage Top Incubation System, cells can be monitored under stable physiological conditions during long-term imaging. Phase contrast microscopy is commonly used, but fluorescence imaging is also possible when studying labeled cells.

Cells not only migrate into the gap but may also proliferate. If the goal is to analyze migration independently of proliferation, mitotic inhibitors such as mitomycin C can be applied before gap creation. Appropriate controls are essential to ensure that the treatment does not affect migration behavior itself.

Reproducibility depends on standardized cell culture conditions, consistent seeding density, uniform gap creation, and controlled imaging parameters. Using defined tools such as ibidi Culture-Inserts, imaging-optimized vessels like the µ-Dish ^{35 mm, high} or the µ-Plate 24 Well, and stable environmental control systems helps minimize variability and ensures robust quantitative results.