Abstract: The present invention relates to heterogeneous niche activity in mesenchymal stromal cell-based cell therapy. It was discovered in the present invention that a difference in the niche activities of MSCs can be created during ex-vivo expansion of MSCs to cause a variation in the outcomes of hematopoietic recoveries. Particularly, the difference in caused by the functional state of MSCs derived by distinct upstream signaling pathways, rather than by clonal heterogeneity, and the functional state can be inferred through the CFU-F of MSC. Therefore, the present invention is expected to contribute to solving a variation in therapeutic effects which is pointed out as a problem of conventional mesenchymal stromal cell-based cell therapy.

Abstract: In the present invention, it was discovered that when vascular endothelial cells are co-cultured with mesenchymal stem cells, an improvement is brought about in the niche activity of mesenchymal stem cells and the self-renewal of hematopoietic or neural stem cells and particularly that the niche activity and the self-renewal of hematopoietic or neural stem cells can easily be controlled by regulating the stimulus (cytokines, etc.) of vascular endothelial cells to the mesenchymal stem cells. Therefore, the present invention can not only improve the self-renewal of stem cells, but also easily control it as needed, and thus is expected to expand the usefulness of mesenchymal stem cell-based cell therapy.

Abstract: The present invention relates to a method for predicting the prognosis of acute myeloid leukemia relapse. According to the present invention, the prognosis of acute myeloid leukemia relapse can be predicted by analyzing changes in a bone marrow microenvironment during the early diagnosis of leukemia.

Abstract: The present invention relates to a method for predicting the prognosis of acute myeloid leukemia relapse. According to the present invention, the prognosis of acute myeloid leukemia relapse can be predicted by analyzing changes in a bone marrow microenvironment during the early diagnosis of leukemia.

Abstract: The present invention relates to a composition for promoting the self-renewal of adult stem cells, comprising ?-catenin or notch ligand-overexpressed mesenchymal stromal cells. Further, the present invention relates to a method for promoting the self-renewal of adult stem cells by co-culturing adult stem cells with the mesenchymal stromal cells. Furthermore, the present invention relates to ?-catenin or notch ligand-overexpressed mesenchymal stromal cells for promoting the self-renewal of adult stem cells.

Abstract: The present invention relates to a composition for promoting the self-renewal of adult stem cells, comprising ?-catenin or notch ligand-overexpressed mesenchymal stromal cells. Further, the present invention relates to a method for promoting the self-renewal of adult stem cells by co-culturing adult stem cells with the mesenchymal stromal cells. Furthermore, the present invention relates to ?-catenin or notch ligand-overexpressed mesenchymal stromal cells for promoting the self-renewal of adult stem cells.

Abstract: There are provided a composition and kit for detecting early apoptosis in cryopreserved umbilical cord blood stem cells, and a method therefor. According to the present invention, when the umbilical cord blood stem cells are cryopreserved and later used for cell therapy, the quality of umbilical cord blood is assessed and early apoptosis in the umbilical cord blood stem cells is detected. The obtained resulting data, which can be used as a quality reference for umbilical cord blood required for transplantation, reflect the engraftment levels after in vivo transplantation of the stem cells, and thus allow prediction of the engraftment levels from the results.

Abstract: Stem cells modified to express activated form of STAT3 by genetic modification or protein delivery, and stem cells co-cultured with cells expressing activated form of STAT3 exhibit increased ex-vivo expansion and enhanced in-vivo regeneration accompanied by net increase in stem cell self-renewal as compared to control group.

Abstract: The present application discloses a composition that includes a sample of donor stem cells that are desired to be engrafted to a subject; and a sample of mesenchymal stromal cells.

Abstract: Stem cells modified to express activated form of STAT3 by genetic modification or protein delivery, and stem cells co-cultured with cells expressing activated form of STAT3 exhibit increased ex-vivo expansion and enhanced in-vivo regeneration accompanied by net increase in stem cell self-renewal as compared to control group.