PD-1 (Programmed Death-1) is a protein that plays a crucial role in the immune system's ability to fight cancer. It is a checkpoint protein that helps regulate the immune response by preventing the immune system from attacking healthy cells.
PD-1 is often exploited by cancer cells to evade the immune system. Cancer cells can produce proteins that bind to PD-1, inhibiting the immune response and allowing the cancer cells to grow and proliferate unchecked.
However, researchers have discovered that blocking the PD-1 pathway can help restore the immune system's ability to fight cancer. This has led to the development of PD-1 inhibitors, a class of cancer therapies that target the PD-1 protein.
PD-1: Upregulated on tumor-infiltrating lymphocytes (TILs), reflecting chronic antigen exposure and an “exhausted” T cell phenotype.
PD-L1 and PD-L2: Frequently overexpressed by many tumor types (e.g., non–small cell lung cancer, melanoma, renal cell carcinoma, head and neck cancers).
(Will delete Record if Target field = "Delete") Home