Abstract: The present invention provides the new use of composition comprising at least one inhibitor of dipeptidyl peptidase IV (DPP-IV) for increasing migration and homing of haematopoetic progenitor cells in stem cell transplanted recipients, wherein said haematopoetic stem and/or progenitor cells had been treated in vitro with an engraftment enhancing compound, specifically with a prostacyclin analog and a cAMP enhancer before transplantation.

Abstract: The present invention provides a novel method for enhancing engraftment of haematopoetic stem cells by an ex-vivo pretreatment comprising the steps of obtaining a sample containing haematopoetic stem cells and admixing a prostacyclin analog to obtain a mixture, incubating said mixture for a period of time sufficient to stimulate G alphas-signalling in said cells and optionally and isolating said stimulated cells. Further, a composition comprising a prostacyclin analog for use in the treatment of individuals undergoing haematopoetic stem cell transplantation is provided.

Abstract: The present invention provides a composition comprising a prostacyclin analogue, derivative or a pharmaceutically acceptable salt thereof, for use in preventing or treating the sinusoidal obstruction syndrome and/or hepatic veno-occlusive disease (VOD) as well as treatment regimens therefor.

Abstract: The present invention provides the new use of composition comprising at least one inhibitor of dipeptidyl peptidase IV (DPP-IV) for increasing migration and homing of haematopoetic progenitor cells in stem cell transplanted recipients, wherein said haematopoetic stem and/or progenitor cells had been treated in vitro with an engraftment enhancing compound, specifically with a prostacyclin analogue and a cAMP enhancer before transplantation.

Abstract: The present invention provides a novel method for enhancing engraftment of haematopoetic stem cells by an ex-vivo pretreatment comprising the steps of obtaining a sample containing haematopoetic stem cells and admixing a prostacyclin analogue to obtain a mixture, incubating said mixture for a period of time sufficient to stimulate G alphas-signalling in said cells and optionally and isolating said stimulated cells. Further, a composition comprising a prostacyclin analogue for use in the treatment of individuals undergoing haematopoetic stem cell transplantation is provided.