Current status and future prospects of cancer-derived immunoglobulins in pancreatic cancer.

Immunoglobulin (Ig) is an important part of the immune system, which is mainly produced by B cells to recognize and kill pathogens. In recent years, the concept of cancer-derived immunoglobulin (cIg) has been proposed. cIg is a special form of Ig found in tumor microenvironment, and the role of cIg in tumor development and potential clinical significance of cIg have attracted more attention recently. The discovery of cIg marks a new understanding of tumor immune response and provides new ideas for early diagnosis and individualized treatment of tumors. Pancreatic cancer is a highly malignant tumor that does not respond well to conventional treatment, and causes serious complications such as pancreatic cancer-associated diabetes. Therefore, exploring potential role of cIg in pancreatic cancer and the progression of pancreatic cancer-associated diabetes is expected to be a breakthrough to improve the diagnosis and treatment of pancreatic cancer and associated complications. This review aims to summarize current research status of cIg in the field of pancreatic cancer, and provide new ideas for modulating microenvironment of pancreatic cancer to improve diagnostic efficiency and therapeutic effect.