Abstract: The present invention relates to a biopolymer and a cell-harvesting scaffold comprising same, as well as the associated cell-harvesting method that allows said harvesting to be performed in a simple and effective manner by reducing the culture temperature. The present invention also relates to a method for synthesizing said biopolymer.

Abstract: The present invention relates to a biopolymer and a cell-harvesting scaffold comprising same, as well as the associated cell-harvesting method that allows said harvesting to be performed in a simple and effective manner by reducing the culture temperature. The present invention also relates to a method for synthesising said biopolymer.

Abstract: The present invention relates to a biopolymer, bioactive and totally biocompatible, very fluid at ambient temperature, capable of gelling in a sudden manner at 37° C., forming a solid implant, structurally integral and continuous having high mechanical properties. The biopolymer comprises at least a bioactive domain capable of directing in a precise manner the formation of a solid or semisolid implant. Furthermore the invention relates to any of the nucleic acids encoding the amino acid sequence of the biopolymer, implants, pharmaceutically acceptable vehicles, uses thereof, and a method of synthesis thereof.

Abstract: The present invention relates to a biopolymer, bioactive and totally biocompatible, very fluid at ambient temperature, capable of gelling in a sudden manner at 37° C., forming a solid implant, structurally integral and continuous having high mechanical properties. The biopolymer comprises at least a bioactive domain capable of directing in a precise manner the formation of a solid or semisolid implant. Furthermore the invention relates to any of the nucleic acids encoding the amino acid sequence of the biopolymer, implants, pharmaceutically acceptable vehicles, uses thereof, and a method of synthesis thereof.

Abstract: The invention discloses ribosome inactivating proteins (RIPs) with two chains, which arc not toxic in the extra-cellular environment, of plant origin, and capable of interacting with ribonucleic acid and causing the inhibition of the biosynthesis of proteins in cellular systems, said proteins being comprised of two chains A and B, chain A having a N-glucosidase activity of the ribosomal ribonucleic acid, and chain B having a lectine activity, both chains being joined by disulphide bridges. Among the proteins, Nigrine b isolated from bark of Sambucus nigra L., basic Nigrine l isolated from the leaves of Sambucus nigra L., Ebuline 1 isolated from leaves of Sambucus ebulus L. and Racenosine b isolated from the bark of Sambucus racemosa L. are mentioned. The proteins find application as inactivators of the rebonucleic acid and as inhibitors of the protein synthesis.