Efferocytosis
In cell biology, efferocytosis (from efferre, Greek for 'to take to the grave', 'to bury') is the process by which apoptotic cells are removed by phagocytic cells. It can be regarded as the 'burying of dead cells'.[1][2]
During efferocytosis, the
Mechanism
For apoptosis, the effect of efferocytosis is that dead cells are removed before their membrane integrity is breached and their contents leak into the surrounding tissue. This prevents exposure of tissue to toxic enzymes,
Efferocytosis can be performed not only by 'professional' phagocytic cells such as
Down stream consequences
Efferocytosis triggers specific downstream intracellular signal transduction pathways, for example resulting in anti-inflammatory, anti-protease and growth-promoting effects. Conversely, impaired efferocytosis has been linked to autoimmune disease and tissue damage. Efferocytosis results in production by the ingesting cell of mediators such as hepatocyte- and vascular endothelial growth factor, which are thought to promote replacement of the dead cells.[3]
Specialized pro-resolving mediators are cell-derived metabolites of certain
Clincal significance
Defective efferocytosis has been demonstrated in such diseases as