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The migration of cultured cells attached to a surface or in 3D is commonly studied using microscopy. [7] [8] [5] As cell movement is very slow, a few μm/minute, time-lapse microscopy videos are recorded of the migrating cells to speed up the movement.
Collective cell migration describes the movements of group of cells and the emergence of collective behavior from cell-environment interactions and cell-cell communication. Collective cell migration is an essential process in the lives of multicellular organisms , e.g. embryonic development , wound healing and cancer spreading ( metastasis ). [ 1 ]
During gastrulation, migrating epiblast cells undergo epithelial-mesenchymal transition in order to lose cell-cell adhesion , delaminate from the epiblast layer and migrate over the dorsal surface of the epiblast then down through the primitive streak. The first wave of epiblast cells to invaginate through the primitive streak invades and ...
This delay between cell-cell contact and onset of proliferation inhibition is shortened as the culture becomes more confluent. Thus, it may be reasonably concluded that cell-cell contact is an essential condition for contact inhibition of proliferation, but is by itself insufficient for mitotic inhibition.
The induced migration of cells from the ganglionic eminence during development is directed by a variety of motogenic factors, molecules that increase cell motility, and chemotactic molecules. The motogenic factor HGF/SF enhances cell motility and directs cells away from subpallial regions and demarcates the routes followed by migrating cells.
In the RMS, vascular cells are arranged parallel to the route of the migrating cells and provide a scaffolding. Glial cells are also associated with the blood vessels; communication between these cells may be important for RMS migration, for example, in BDNF (brain-derived neurotrophic factor), a growth factor that is thought to module RMS ...
During cell migration, both the composition and the morphology of the focal adhesion change. Initially, small (0.25μm 2) focal adhesions called focal complexes (FXs) are formed at the leading edge of the cell in lamellipodia: they consist of integrin, and some of the adapter proteins, such as talin, paxillin and tensin. Many of these focal ...
The original hypothesis, that the protein is a stop signal for the migrating cells, is supported by its ability to induce the dissociation, [59] its role in asserting the compact granule cell layer in the hippocampus, and by the fact that migrating neuroblasts evade the reelin-rich areas.