This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Tumor markers provide information for assessing disease risk, prognosis, metastatic potential and evaluation of response to therapy. Previously, a new breast cancer gene designated BASE (breast cancer and salivary gland expression) has been identified by generating a library that was enriched for genes encoding secreted and membrane proteins. Of 62 normal tissues analyzed, BASE was only expressed in salivary gland. BASE was also expressed in human breast cancers. The deduced amino acid sequence of BASE predicts that it is secreted. BASE is predicted to have a 20 amino acid N-terminal signal sequence, and has homology to other secreted proteins, such as Latherin and the PLUNC family. To further characterize BASE, we need to verify its cellular localization. As a first step, an in vitro expression system using 293T cells and the ZR-75-1 breast cancer cell line will be developed. A plasmid will be constructed containing the BASE ORF cloned 5' of a Myc tag using the vector pcDNA3.1-Myc/His. This expression construct will be transfected into 293T and ZR-76-1 cells. After 48 hours, the culture medium and total cell extracts will be examined for the presence of BASE-Myc by Western immunoblot analysis using a monoclonal antibody against the Myc tag.

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Exploratory Grants (P20)
Project #
5P20RR016479-06
Application #
7381718
Study Section
Special Emphasis Panel (ZRR1-RI-7 (01))
Project Start
2006-05-01
Project End
2007-04-30
Budget Start
2006-05-01
Budget End
2007-04-30
Support Year
6
Fiscal Year
2006
Total Cost
$4,428
Indirect Cost
Name
University of South Dakota
Department
Other Basic Sciences
Type
Schools of Medicine
DUNS #
929930808
City
Vermillion
State
SD
Country
United States
Zip Code
57069
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