Vivian Takafuji,Xin Wei Wang,Edward J. Unsworth,Paul K. Goldsmith
申请号：
US13549633
公开号：
US20120294870A1
申请日:
2012.07.16
申请国别(地区):
US
年份:
2012
代理人:
摘要：
Based on the observation of the cooperation of osteopontin (OPN) and matrixmetalloproteinase-9 (MMP-9) in the promotion of the metastatic phenotype, therapies and diagnostic assays are disclosed for the treatment of a tumor that overexpresses OPN, such as hepatocellular carcinoma (HCC), for example metastatic HCC. In one example, methods of treating a tumor include administration of an agent that reduces cellular invasion resulting from the interaction between a fragment of OPN (OPN-5kD) generated by MMP-9 cleavage and CD44 receptor. Examples of such agents include fragments of OPN-5kD and antibodies specific for OPN-5kD. Therapeutic compositions are also provided that include such agents. Also provided are methods of diagnosing or prognosing a tumor, for example by detecting expression of OPN-5kD peptide or OPN-c mRNA in a biological sample obtained from the subject. Also provided are antibodies that specifically bind OPN-5kD.
