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Role of netrin-1 and netrin-1 dependence receptors in colorectal cancers Mehlen P; Llambi FBr J Cancer 2005[Jul]; 93 (1): 1-6Although cancer is a multifaceted disease, all cancer types share identical molecular and cellular mechanisms. These mechanisms involve a collection of alterations critical to the normal physiological functioning of cells, such as alterations of growth factor signalling pathways, angiogenesis, cell adhesion signals, DNA replication and apoptotic cell death. Many genes involved in the processes enumerated above are functionally inactive in tumour cells, designating them as putative 'tumour suppressor genes'. Back in the early 1990s, Vogelstein and colleagues suggested that a gene called DCC (for Deleted in Colorectal Cancer) could be a tumour suppressor gene because it was found to be deleted in more than 70% of colorectal cancers, as well as in many other cancers. During the last 15 years, controversial data have failed to firmly establish whether DCC is indeed a tumour suppressor gene. However, the recent observations that DCC triggers cell death and is a receptor for netrin-1, a molecule recently implicated in colorectal tumorigenesis, have prompted a renewal of interest in the role of DCC in tumorigenesis and suggest that the netrin-1/receptor pairs act as novel negative regulators of tumour development.|Colorectal Neoplasms/genetics/*physiopathology[MESH]|Genes, DCC[MESH]|Genes, Tumor Suppressor[MESH]|Humans[MESH]|Nerve Growth Factors/*physiology[MESH]|Netrin Receptors[MESH]|Netrin-1[MESH]|Receptors, Cell Surface/*physiology[MESH]|Tumor Suppressor Proteins/*physiology[MESH] |
