To study the redistribution of epidermal stem cells in regenerating wound tissues, and to elucidate the role of epidermal stem cells during wound repair.

To observe the effect of berberine on the differentiation of 3T3-L1 preadipocytes into adipocytes and to elucidate its mechanism.

Hematopoietic stem cells (HSC) are attractive targets for gene therapy of inherited and acquired disorders in hematopoietic system in that they possess the properties of self-renewal, proliferation, and multi-lineage differentiation. For successful gene therapy, the viral vector-mediated gene addition strategy has two essential prerequisites: 1) the efficient transfer of therapeutic gene into HSC; 2) the long-term and stable expression of the transgene at therapeutic levels. The oncoretrovirus-derived vectors are best understood and most widely investigated. Recent successful cases of gene therapy for severe combined immunodeficiency due to adenosine deaminase or gamma c chain deficiencies have provided strong evidences that retrovirus-mediated gene transfer into HSC will work in clinical treatment. While these results are encouraging, some obstacles remain to be circumvented including low efficiency of gene transfer and gene silencing in retroviral vector system. The therapeutic gene can be efficiently introduced into HSC by HIV-1-based lentiviral vector due to its capability to infect the quiescent cells. A variety of preclinical studies are now conducted and a number of valuable results highlight the efficacy of lentiviral-mediated gene transfer into HSC. However, the potential value of lentiviral vectors in human gene therapy remains to be demonstrated. Adeno-associated virus vector is an alternative to retroviral and lentiviral vectors. This review summarizes the characteristics of integrating vectors, the improved HSC transduction protocols, and the optimized gene expression strategies and outlines the important advances of preclinical and clinical trials in hematopoietic stem cell gene therapy.

To investigate the ratio and amount of CD34+ cells and their subsets in mobilized peripheral blood (MPB) and leukapheresis products in patients receiving autologous peripheral blood stem cell transplantation (auto-PBSCT) and in allo-PBSCT donors, and clarify the role of CD34+ cells in post-transplantation hematopoietic reconstitution.

To determine the clinical results of selected CD34(+) cell autologous transplantation in advanced malignant tumors.

This paper reported microscopic characters of Lysimachia decurrens. The results showed that secretory canals were scattered in the cortex, pericycle fibres arrayed annularly and pith was large with many secreory canals in the transverse section of the stem. It also showed radiate cuticula grains and round oil cells were found in the upper epidermis cells of leaf, which was bifacial and contained two midrib vascular bundles, one much bigger than the other.

In this experiment, it was designed to carry out proliferous culture of bovine blastocysts(day 7) derived from embryos cloned through bovine somatic cell nuclear transfer, isolating and passaging of ES cells. The cells of blastocysts, which were planted on feeder layer, formed small colonies within 24 h. The nest-shape colonies occurred after culturing for 2-3 days. After the colonies in the same shape were isolated and passaged 4-5 times, many different size colonies with monolayer of multi-cells appeared. The colonies that had been passaged 4-5 times were planted into 4-wells multi-dishes without feeder layer. The colonies with monolayer of multi-cells appeared after 24 h, spread all over the bottom of the dishes, emerged epidermis-like cells that appeared reticulate after 4-7 days. These cells were used as donor cells to carry out nuclear transfer. The results showed that 80% (40/50) of the reconstructed embryos cleaved, 5% (2/40) and 2.5% (1/40) of them developed to the morulaes and blastocyst stage, respectively. It revealed that ES-like cells derived embryos constructed through somatic cell nuclear transfer have the developmental potentials.

To investigate the effects and the related mechanisms of the components of Dang-Gui-Bu-Xue decoction (DGBXD) on improving blood deficiency.

To study the feasibility of constructing tissue engineered cartilage cells by differentiated human bone marrow mesenchymal stem cells(MSC) cultured in vitro.

To observe the clinical efficacy of TCM for reinforcing Shen and activating blood circulation to dredge Channels in auxiliary treating chronic aplastic anemia (CAA), and to explore its mechanism.

To investigate the effects of salicylate on noise-induced hearing loss (NIHL) in guinea pigs.

To observe the protective effect of poly DL-aspartic acid (PAA) on ototoxicity of gentamicin (GM).

To investigate if glial cell line-derived neurotrophic factor (GDNF) combined with neurotrophin-3 (NT-3) provides synergetic protection in filamentous actin (F-actin) on hair cell (HC) from acoustic trauma.

To study the isolation of human bone marrow mesenchymal stem cells (MSCs) and in vitro differentiation into chondrocytes as potential seed cell for condyle cartilage tissue engineering.

Pancreatic nestin positive cells are multipotential stem cells which may play an important role in the development of pancreas. Here we isolated nestin positive cells from human fetal pancreases and then examined its biological characters in vitro. The results showed that: (1) Nestin positive cells expressed high level transcript of ABCG2/BCRP1 which was the molecular determination of stem cells, and they differed from pancreatic ductal epithelium cells both in morphology and in growth behavior. (2) Upon confluence, these cells self assemble to form islet like cell clusters (ICCs). (3) During differentiation, nestin positive cells in ICCs expressed markers of different cell lineages which meant that they were multipotential, and they could generate insulin-producing cells after inducement.

As lentiviral vector holds the characteristics of higher transfection to non-dividing cells, larger capacity of transfer gene fragments, long-term expression of therapeutic gene and lower rate of immunological response, therefore it becomes potential viral vector in gene therapy. Improvements of lentiviral vector, human immunodeficiency virus type-I as example, and its application in gene transfer for gene therapy of hematological diseases are emphasized in this review.