Abstract: A peptide fragment of the netrin-4 protein and nucleic acids coding for the peptide are described. The peptide can inhibit endothelial cell proliferation and cell migration, as well as activate the proliferation and migration of pericytes and smooth muscle cells. Pharmaceutical formulations containing the peptide and/or the nucleic acids can be used to treat a variety of tumoral and non-tumoral pathologies.

Abstract: A peptide fragment of the netrin-4 protein and nucleic acids coding for the peptide are described. The peptide can inhibit endothelial cell proliferation and cell migration, as well as activate the proliferation and migration of pericytes and smooth muscle cells. Pharmaceutical formulations containing the peptide and/or the nucleic acids can be used to treat a variety of tumoral and non-tumoral pathologies.

Abstract: Described is use of a netrin selected among netrin-4, mutated netrin-4, netrin-1, netrin G1 or netrin-3, or one of their fragments or a nucleotide sequence encoding one of the netrins or one of the fragments, or an anti-idiotypic antibody of one of the netrins or of one of the fragments, or of a Fab fragment of the anti-idiotypic antibodies, for preparing a medicine for preventing or treating tumoral or non-tumoral pathologies.

Abstract: Described is use of a netrin selected among netrin-4, mutated netrin-4, netrin-1, netrin G1 or netrin-3, or one of their fragments or a nucleotide sequence encoding one of the netrins or one of the fragments, or an anti-idiotypic antibody of one of the netrins or of one of the fragments, or of a Fab fragment of the anti-idiotypic antibodies, for preparing a medicine for preventing or treating tumoral or non-tumoral pathologies.

Abstract: The invention provides a novel PF4 pharmacophore that is useful, inter alia, for identifying peptidomimetics and other compounds capable of modulating PF4 activity (e.g., as inhibitors, agonists or antagonists). Mutant PF4 polypeptide sequences are also provided that modulate PF4 activity in cells.

Abstract: The invention concerns a peptide selected among the group consisting of PF-4, fragments and fusion peptides derived from PF-4, and their analogues, having an angiogenesis-inhibiting activity, wherein the glutamine in position 56 in the native PF-4 is replaced by an arginine, a lysine or a histidine, preferably an arginine. The inventive peptide has an I50 less than the I50 of the same peptide not having a mutation in 56. The invention also concerns DNA or cDNA sequences coding for said peptides and the use of said sequences and/or said peptides for preparing a medicine inhibiting angiogenesis and/or proliferation of cells.