Anti-Gastric Mucin/MUC-6 antibody [MUC6/916]

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

MUC-6 also called gastric mucin is a large glycoprotein with a molecular mass around 500-1000 kDa. Cells in the stomach express MUC-6 where it plays a critical mechanical role in forming protective mucous barriers against harsh gastric environments. The glycoprotein forms viscous gels that coat the gastric mucosa creating a protective layer. These layers prevent autodigestion by gastric acid and pepsin safeguarding the underlying epithelium from damage.

Biological function summary

MUC-6 contributes to the defense of gastric tissues through its complex structure. The protein belongs to the mucin family characterized by their high carbohydrate content. MUC-6 interacts with other secreted mucins like MUC-5AC to form a protective gel. It acts as an important component in the maintenance of the gastric mucosal barrier ensuring the separation of stomach contents and epithelial surface. This gel traps pathogens and particles reducing their ability to cause infection or irritation.

Pathways

MUC-6 plays a role in mucosal immunity and epithelial signaling pathways. In the gastric mucosa pathway it links with proteins such as CLCA1 which influences mucin secretion and function. Another linked pathway is the oxidative stress pathway where MUC-6 partners with antioxidant enzymes to shield the stomach lining from oxidative damage. These pathways showcase how MUC-6 integrates a mechanical and biological defense system within the digestive tract.

Associated diseases and disorders

Alterations in MUC-6 expression levels can influence conditions like gastric cancer and peptic ulcer disease. In gastric cancer abnormal methylation of the MUC-6 gene can contribute to tumorigenesis and tumor progression. In peptic ulcer disease deficient mucin levels particularly MUC-6 compromise the mucosal barrier function. Connections also exist with proteins like gastrin which elevate acid production and burden the mucosal defense emphasizing the relevance of MUC-6 in these gastric conditions.