title: [The application of a new-type bioreactor in the ex vivo expansion of hematopoietic stem/progenitor cells].
abstract: Based on the requirement of culture conditions for hematopoietic stem and progenitor cells (HSPCs) ex vive expansion, we developed a new-type bioreactor by combining superiorities of static and stirred culture models. Stem cell factor (SCF), thrombopoietin (TPO), FLT-3 ligand(Flt-3) were used as the cytokines cocktails. The effects of the static and cyclic culture on the expansion characteristics of CD34+ selected cells were compared in the new-type bioreactor. After 7 d cultures, the expansion of total cells in the static culture was 13.86 +/- 4.26 fold, higher than that in the cyclic culture (7.23 +/- 2.67 fold). The analysis of the fold expansion and the proportion of CD34+ cells showed that there was no marked difference between the static culture and the cyclic culture. However, the fold expansion and the proportion of CD34+CD38- cells were higher in the cyclic culture than those in the static culture (3.90 +/- 0.85 versus 1.82 +/- 0.58), which reflected more primary CD34+CD38- cells were obtained in the cyclic culture. The above results demonstrated that both the static culture and the cyclic culture could be used in ex vive expansion of CD34+ cells with the new-type bioreactor. In static culture hematopoietic stem cells differentiated into progenitor cells, whilst the cyclic culture favored the expansion of primary HSPCs.
authors: State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China.
authors: Meiqin
authors: M
authors: Zhou
authors: Haibo
authors: H
authors: Cai
authors: Wensong
authors: W
authors: Tan
mesh_terms: D018952:Antigens, CD34 / Q000378:metabolism; D019149:Bioreactors; D018929:Cell Culture Techniques / Q000379:methods*; D002454:Cell Differentiation / Q000502:physiology; D049109:Cell Proliferation; D016207:Cytokines / Q000494:pharmacology; D005312:Fetal Blood / Q000166:cytology*; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000276:immunology; D006801:Humans; D019089:Stem Cell Factor / Q000494:pharmacology
chemical_list: D018952:Antigens, CD34; D016207:Cytokines; D019089:Stem Cell Factor