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Developmental expression of mucin genes MUC1 and MUC2
J A Chambers1, M A Hollingsworth, A E Trezise
1Institute of Molecular Medicine, Oxford University, John Radcliffe Hospital, UK.
Journal of Cell Science
|February 1, 1994
Summary
This study examines mucin gene (MUC1 and MUC2) expression during human development. Findings suggest MUC1 and MUC2 may contribute to intestinal disease and MUC1 to early respiratory issues in cystic fibrosis.
Area of Science:
- Developmental biology
- Molecular genetics
- Human physiology
Background:
- The mucin genes MUC1 and MUC2 are expressed in various human ductal epithelia.
- MUC1 is found in the pancreas, mammary gland, kidney, and genital ducts, and is upregulated in tumors.
- MUC2 is a major intestinal mucin gene also found in the trachea.
Purpose of the Study:
- To investigate the developmental expression patterns of MUC1 and MUC2 in human tissues.
- To correlate mucin gene expression with potential roles in diseases like cystic fibrosis.
Main Methods:
- Analysis of MUC1 and MUC2 mRNA expression during human fetal development.
- Utilizing techniques to detect gene expression in various tissue samples at different gestational ages.
Main Results:
- High-level MUC1 expression was observed in the respiratory tract and kidney by 12.5 weeks gestation.
- MUC1 expression appeared later in the colon and pancreas (late gestation).
- MUC2 expression was detected in the jejunum, ileum, and colon by 12 weeks, and in the lungs by 18 weeks.
Conclusions:
- MUC1's expression pattern suggests it may not be involved in early pancreatic duct obstruction in cystic fibrosis.
- Both MUC1 and MUC2 might play roles in the development of intestinal diseases.
- MUC1 may contribute to early respiratory conditions associated with cystic fibrosis.