Human Immunoglobulin Superfamily Member 8 (IGSF8) Protein

Background

IGSF8, also known as ECD8 or CD316, is expressed in a wide range of tissues, including immune cells, neuronal cells, and epithelial cells. It contains Ig-like domains and functions as a co-receptor involved in cell adhesion, cell signaling, and immune modulation. IGSF8 interacts with integrins and tetraspanins, playing a role in immune cell activation, antigen presentation, and synaptic organization. In the immune system, it facilitates interactions between antigen-presenting cells and T cells. Dysregulation of IGSF8 is linked to neurodegenerative diseases, such as Alzheimer’s disease, and its altered expression is observed in certain cancers, where it influences tumor-immune interactions and metastasis.