PMID: 18724698Aug 30, 2008Paper

The application of a new-type bioreactor in the ex vivo expansion of hematopoietic stem/progenitor cells

Sheng wu gong cheng xue bao = Chinese journal of biotechnology
Meiqin ZhouWensong Tan

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 ...Continue Reading

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