uPAR and HER-2 gene status in individual breast cancer cells from blood and tissues.

作者: S. Meng , D. Tripathy , S. Shete , R. Ashfaq , H. Saboorian

DOI: 10.1073/PNAS.0608113103

关键词: Regulation of gene expressionTrastuzumabImmunologyGeneCirculating tumor cellGene duplicationBreast cancerCancer researchAntibodyBiologyUrokinase receptor

摘要: Overexpression of urokinase plasminogen activator system or HER-2 (erbB-2) in breast cancer is associated with a poor prognosis. overexpression caused by gene amplification. The anti-HER-2 antibody trastuzumab significantly improves clinical outcome for HER2-positive cancer. Drugs that target the uPA are early trials. aims this study were to determine whether receptor (uPAR) amplification occurs and analysis individual tumor cells (TCs) blood tissue can add information conventional pathological could help diagnosis treatment. Analysis TCs indicates uPAR significant portion primary cancers also circulating (CTCs) from patients advanced disease. There was complete concordance between touch preps (TPs) examination status tumors. excellent tumors CTCs provided acquisition taken into account. Unexpectedly, occurred most frequently same TC patient, suggesting biological bias potential advantage coamplification. Expression predicted 100 92% patients, respectively.

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