Abstract: A cell/ligand specific marking system, the system being characterized in that it comprises: (a) an endothelial precursor cell (EPC) including a cell marker selected from among the group consisting of the Eph (in particular EphB4 or EphB1), and (b) a protein material of structure L-K, which consists of a ligand (L) specific of the marker and is associated or fused with a binding protein (K), the system being capable of providing a proangiogenetic cell material of structure EPC-Eph-L-K. The invention also concerns the cell material as product capable of stimulating angiogenesis, its preparation method and its therapeutic use, in particular with respect to vascular insufficiencies.

Abstract: The invention relates to a cellular preparation containing endothelial cell precursors (EPCs) and smooth muscular cell precursors (SMCs), as a combination product for simultaneous, separated or time-spread administration, used as a revascularisation stimulating agent. The invention also relates to the use of such a cellular preparation.

Abstract: The invention concerns a method for obtaining in vitro a population of cells comprising essentially human smooth muscular cells expressing calponin and SM-MHC from a sample of human muscular biopsy or from human muscular biopsies differentiated in vitro into skeletal muscle cells. The invention also concerns a composition comprising the isolated smooth muscular cells obtainable by said method as therapeutic principle designed for humans. The invention further concerns the use of the isolated smooth muscular cells for preparing a therapeutic composition designed to replace smooth muscular cells. In particular, the invention concerns the use of said isolated smooth muscular cells for treating ischemia, cancer or any disease requiring revascularization of damaged tissues. Finally, the invention concerns the use of said smooth muscular cells as vector for an active principle for preparing a therapeutic composition designed for humans requiring treatment with said active principle.

Abstract: A cell/ligand specific marking system, the system being characterized in that it comprises: (a) an endothelial precursor cell (EPC) including a cell marker selected from among the group consisting of the Eph (in particular EphB4 or EphB1), and (b) a protein material of structure L-K, which consists of a ligand (L) specific of the marker and is associated or fused with a binding protein (K), the system being capable of providing a proangiogenetic cell material of structure EPC-Eph-L-K. The invention also concerns the cell material as product capable of stimulating angiogenesis, its preparation method and its therapeutic use, in particular with respect to vascular insufficiencies.