CTLA-4 Monoclonal Antibody {{ currentPage ? currentPage.title : "" }}

Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), also known as CD152, ALPS5, CELIAC3, GRD4, GSE, or IDDM12, is a type of CD28 homolog molecule that plays an important role in regulating T cell activation. CTLA-4 is normally present in the vesicles of cells and is then transported to the immune synapse formed between T cells and antigen-presentation cells (APCs) and inhibits further activation of T cells by blocking T cell receptors and their signaling pathways. Pilot studies have demonstrated that the binding of CTLA-4 to its ligands, such as CD80 (B7-1) and CD86 (B7-2), can induce T cells, and the blocking of CLTA-4 molecules can significantly improve T cell activation. Furthermore, CTLA-4 has been regarded as a clinically targeted immune checkpoint molecule and is broadly used in treating various disease types, especially for tumors. For example, CTLA-4 can promote tumor cell survival and tumor immune evasion by downregulating CD80/CD86 expression on certain tumor models.

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