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Mouse mucin 1 (MUC1) defined by monoclonal antibodies
1Austin Research Institute, Austin and Repatriation Medical Centre, Heidelberg, Victoria, Australia. px_xing@muwayf.unimelb.edu.au
International Journal of Cancer
|June 17, 1998
Summary
Researchers developed six novel antibodies targeting murine mucin 1 (muc1) and its human counterpart. These antibodies are valuable tools for studying mucin expression in mouse models of cancer and glandular tissue development.
Area of Science:
- Immunology
- Cancer Biology
- Biochemistry
Background:
- Mucins, particularly Mucin 1 (MUC1), are frequently overexpressed in human cancers.
- Numerous monoclonal antibodies (MAbs) exist for human MUC1, but none for murine muc1.
Purpose of the Study:
- To produce and characterize novel antibodies against murine mucin 1 (muc1) and the human MUC1 cytoplasmic tail.
- To provide essential reagents for studying muc1 in murine models.
Main Methods:
- Immunization of rats and muc1 knockout mice with synthetic peptides and GST-fusion proteins.
- Production of six different monoclonal antibodies (MAbs).
- Characterization of antibody reactivity with murine tissues and peptides, including epitope mapping.
Main Results:
- Developed six MAbs reactive with both murine muc1 and human MUC1 cytoplasmic tail.
- Antibodies stained mucin-expressing murine tissues (breast, stomach, colon, ovary, kidney, pancreas) similarly to human patterns.
- Identified specific epitopes (TSS, TAVLSGTS, LSGTSSP) for M30, M70, and MFP25 MAbs.
- Observed cross-reactivity with certain mucin-derived peptides and potential reactivity with murine lymphocytes.
Conclusions:
- The generated antibodies are specific reagents for murine muc1 and its cytoplasmic tail.
- These antibodies will be instrumental in investigating muc1 expression, differentiation, and mucin-secreting tumor ontogeny in mice.
- Potential cross-reactivity with lymphocytes warrants further investigation.