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Mammaglobin is found in breast tissue as a complex with BU101
T L Colpitts1, P Billing-Medel, P Friedman
1Breast Cancer Venture, Abbott Diagnostics Division, Abbott Laboratories, Abbott Park, Illinois 60064, USA.
Biochemistry
|September 12, 2001
Summary
Mammaglobin, a breast tissue marker, forms a complex with BU101 (lipophilin B). This complex, isolated from breast cancer tissue, represents the biologically active form of mammaglobin.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Mammaglobin gene exhibits preferential expression in breast tissue, making it a target for breast cancer diagnostics.
- Few genes demonstrate comparable specificity to mammaglobin in breast tissue.
- Ongoing research aims to develop diagnostic tests for breast cancer utilizing mammaglobin detection.
Purpose of the Study:
- To identify novel tissue-specific markers.
- To investigate the molecular interactions of mammaglobin in breast tissue.
- To characterize the biologically relevant form of mammaglobin.
Main Methods:
- Utilized the Incyte Genomics Lifeseq database for identifying tissue-specific markers.
- Observed and identified a second secretoglobin, BU101 (lipophilin B).
- Isolated and characterized the mammaglobin-BU101 complex from breast cancer tissue.
Main Results:
- Mammaglobin was found to exist as a complex with BU101 in breast tissue.
- The mammaglobin-BU101 complex was successfully isolated from breast cancer tissue.
- Characterization confirmed the complex as the biologically relevant form of mammaglobin.
Conclusions:
- Mammaglobin interacts with BU101 (lipophilin B) in breast tissue.
- The mammaglobin-BU101 complex is the biologically relevant form of mammaglobin.
- This finding may have implications for breast cancer diagnostics and understanding mammaglobin function.