Phagocytosis
Mesangial cells also phagocytize glomerular basal lamina components and immunoglobulins. They are an unusual example of phagocytic cells derived from smooth muscle and not monocytes. Mesangial cells aid neutrophils in removing other mesangial cells undergoing apoptosis and also other debris in the glomerulus.
Read more about this topic: Intraglomerular Mesangial Cell