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From Sequence of Tumor Liberated Protein (TLP) to Potential Targets for Diagnosis and Therapy: Advanced Study | Chapter 6 | Innovations in Medicine and Medical Research Vol.2

A preliminary analysis of immunoprecipitation followed by Western Blotting (WB) shows corin and TLP precipitate at the same level (approximately 50 KDa) and are recognized by the same antibodies. In parallel the tests of immunoprecipitation were improved by the use of cell extracts derived from lung cancer cells A549 and NCI-H23 with the aim of obtaining a precipitate containing only the TLP. In fact the partial amino acid sequence of TLP shows a high homology with the sequence of human corin (only one amino acid is different) and is present in lung cancer under different isoforms. It is known that human corin is expressed mostly outside the cells and the protein extract derived from the extracellular medium and from the cells transfected with the plasmid, which over expresses corin, shows several bands analysed on SDS-PAGE that are equivalent to the bands (about 50-100 KDa) observed in the WB analysed by anti-TLP.

Author (s) Details
Giulio Tarro
Beaumont Bonelli Foundation for Cancer Research, Naples, Italy and Committee on Biotechnologies and VirusSphere, World Academy of Biomedical Technologies, UNESCO, Paris, France.

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