Why is cell migration important in wound healing?

Cell migration occurs during many important physiological processes. For example, controlled cell migration allows for embryonic development, tissue injury, and wound healing. In contrast, cell migration is dysregulated in many pathological situations, such as cancer metastasis and inflammation.

What is migration in wound healing?

In essential physiological processes including morphogenesis, wound healing and tissue regeneration, cells often move as a tightly or loosely associated cohesive group. This type of migration, during which cells are influenced by the interaction with their neighbors, is known as ‘collective cell migration’.

What causes migration of fibroblasts?

During the formation of granulation tissue in a dermal wound, platelets, monocytes and other cellular blood constituents release various peptide growth factors to stimulate fibroblasts to migrate into the wound site and proliferate, in order to reconstitute the various connective tissue components.

What is the purpose of cell migration assay?

The transwell cell migration assay measures the chemotactic capability of cells toward a chemo-attractant. The transwell cell invasion assay, however, measures both cell chemotaxis and the invasion of cells through extracellular matrix, a process that is commonly found in cancer metastasis or embryonic development.

What is Skin migration?

Human keratinocytes and dermal fibroblasts are two primary cell types in skin that must undergo migration for skin wounds to heal. In this cell migration, ECMs play an “active” role by providing the cells with both focal adhesions and a migration-initiating signal, even in the absence of GFs.

How is cell migration measured?

Migration can be assessed by determining the number of cells that move across a microporous membrane (transwell migration assay) or by measuring the surface area that cells occupy over time after creating a ‘cell-free’ area (scratch assay) [8–10].

When does cell migration occur?

In a developing embryo, cell migration is the driving factor for various morphogenetic events. For instance, during gastrulation in very early embryos, groups of cells migrate as sheets to form the three germ layers.