Anti-Pleiotrophin Neutralizing Antibodies for the Treatment of Cancer
Reference #: 2004-031
Overexpression of Pleiotrophin (PTN), a secreted heparin binding growth factor, results in malignant phenotypes. PTN also demonstrates angiogenic activity. Specifically, PTN level in serum is elevated in pancreatic, lung, melanoma, and colon cancer patients and it correlates with the disease stages. The present invention provides anti-PTN antibodies (and methods of producing such antibodies) which functionally inhibit or block the angiogenic and oncogenic activities of PTN, and therefore of great therapeutic value.
- Prophylactic and therapeutic treatment of cancer.
- Diagnostic and prognostic evaluation of cancers associated with PTN expression.
- Research tool.
- Antibodies of the present invention block biological activities of PTN.
- The present invention provides novel methods to produce antibodies against proteins that are highly homologous among the mammalian system.
- Such antibodies can be used for both preclinical studies as well as human studies, saving time and resources in the drug development process.
- Labeled monoclonal antibodies can be used to detect cancer at an early stage.
- Such antibodies can be used to monitor tumor recurrence.
Stage of Development
Proof-of- concept studies demonstrate that the anti-PTN antibodies suppress human pancreatic tumor growth in animals. Also, studies have been done to demonstrate that these monoclonal antibodies inhibit the proliferation of cells as well as angiogenesis by 90%.
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p>“Serum levels of the angiogenic factor pleiotrophin in relation to disease stage in lung cancer patients”. Wellstein et al, Br J Cancer. 2002 Mar 18;86(6):858-63.