Otto Phanstiel, IV,Deborah Altomare,Laurence von Kalm
申请号：
US15074993
公开号：
US20160299149A1
申请日:
2016.03.18
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Assays are described which measure polyamine transport activity and markers associated with polyamine transport and metabolism. These data are then used for the selection of treatments using therapies which target polyamine transport and polyamine metabolism. The assay includes a substrate to which a protein-containing cell sample can bind, a solution comprising a first antibody specific against ATP13A3, wherein the first antibody is configured to bind to ATP13A3 protein on the substrate, a solution comprising a second antibody specific against the first antibody, the second antibody comprising an enzyme linked thereto, wherein the second antibody is configured to bind to the first antibody. The assay further includes a substrate specific to the enzyme, wherein upon combining the substrate and the enzyme, the amount of enzyme in the solution can be identified, wherein said amount of enzyme identified is proportional to the amount of ATP13A3 protein in the sample, wherein said ATP13A3 protein is indicative of polyamine transport in the cells of the sample. In addition, primary antibodies covalently attached to respective fluorophores can be used to directly measure the relative expression levels of these biomarkers in histological samples. In addition, several biomarkers are described which allow for therapy selection based upon the expression and relative ratios of specific proteins associated with polyamine transport (c-myc, ATP13A3 Cav-2, and Cav-1 as well as c-Raf).
