ILT-7 Activators

ILT-7, also known as Immunoglobulin-like Transcript 7, is a protein encoded by the ILT7 gene in humans. It is a member of the leukocyte receptor complex (LRC) and is primarily expressed on plasmacytoid dendritic cells (pDCs), which are crucial for innate immune responses and the regulation of adaptive immunity. pDCs are known for their ability to produce large amounts of type I interferons in response to viral infections, playing a vital role in antiviral immunity.ILT-7 functions as a surface receptor on pDCs and is involved in modulating their activity. It interacts with the BST2 protein (also known as CD317 or tetherin) on other cells, a connection that plays a role in the regulation of interferon production and the immune response. When ILT-7 binds to BST2, it transmits an intracellular signal that leads to the downregulation of interferon-alpha production by pDCs. This mechanism serves as a regulatory check to prevent excessive immune responses, which can be harmful to the body.

The role of ILT-7 in immune regulation is significant for understanding autoimmune diseases and chronic viral infections. Dysregulation of pDC activity and interferon production is implicated in various autoimmune and inflammatory conditions. Therefore, ILT-7 and its interaction with BST2 are of considerable interest for targeting to modulate immune responses in such diseases.Research on ILT-7 also extends to its role in cancer immunology. Understanding how ILT-7 modulates pDC activity could provide insights into tumor-immune interactions and the development of novel cancer immunotherapies. In summary, ILT-7 is a key immune receptor on plasmacytoid dendritic cells, involved in regulating immune responses, particularly interferon production.