PMID- 25251668 OWN - NLM STAT- MEDLINE DCOM- 20150324 LR - 20150113 IS - 1537-2995 (Electronic) IS - 0041-1132 (Linking) VI - 55 IP - 1 DP - 2015 Jan TI - Bone marrow stromal cells transduced with a thrombopoietin, interleukin-6, and interleukin-11 syncretic gene induce cord mononuclear cells to generate platelets in vitro. PG - 176-86 LID - 10.1111/trf.12800 [doi] AB - BACKGROUND: The induction of hematopoietic stem cells to produce mass numbers of platelets (PLTs) in vitro is an effective method to address a lack of PLTs and PLT transfusion resistance in the clinic. However, the design of a low-cost and sustainable culture system is currently problematic. STUDY DESIGN AND METHODS: Here, the thrombopoietin, interleukin (IL)-6, and IL-11 genes, three regulatory factors important for thrombopoiesis, were used to construct self-splicing fusion genes linked by foot and mouth disease (F2A) and Theiler's murine encephalitis (T2A) viruses. Bone marrow stromal cells (BMSCs) transduced with the fusion gene acted as nourishing cells and induced cord blood mononuclear cells (MNCs) to generate PLTs in vitro. We counted these cells; determined the percentage of cells expressing specific cell surface markers (CD41); and measured their ability to aggregate via flow cytometry, immunohistochemical staining, and aggregation remote analyzer. RESULTS: BMSCs transduced with the fusion gene successfully induced cord blood MNCs to generate PLT-sized fragments in the absence of exogenous cytokines. The output was higher than that of the control groups, and the PLT-sized fragments were similar to endogenous PLTs in terms of shape, CD41 expression, and aggregation function. CONCLUSION: These results suggest that our method could be used to develop a low-cost sustainable cultivation system that generates PLTs in vitro by enhancing the autocrine production of related cytokines through the nourishment provided by cells transduced with a syncretic gene. CI - (c) 2014 AABB. FAU - Lu, Hua AU - Lu H AD - Transfusion Department, Southwest Hospital Third Military Medical University, Chongqing, China. FAU - Jiang, Tianlun AU - Jiang T FAU - Li, Ruqing AU - Li R FAU - Wang, Shichun AU - Wang S FAU - Zhang, Qiang AU - Zhang Q FAU - Zhao, Shuming AU - Zhao S LA - eng SI - GENBANK/F01310 SI - GENBANK/F01370 SI - GENBANK/F02850 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140923 PL - United States TA - Transfusion JT - Transfusion JID - 0417360 RN - 0 (IL11 protein, human) RN - 0 (IL6 protein, human) RN - 0 (Interleukin-11) RN - 0 (Interleukin-6) RN - 9014-42-0 (Thrombopoietin) SB - IM MH - Adenoviridae/genetics MH - Base Sequence MH - Blood Platelets/*cytology MH - Cells, Cultured MH - Coculture Techniques MH - Enzyme-Linked Immunosorbent Assay MH - Fetal Blood/*cytology MH - Flow Cytometry MH - Foot-and-Mouth Disease Virus/genetics MH - *Genes, Synthetic MH - Genetic Vectors/genetics MH - Humans MH - Interleukin-11/genetics/*metabolism MH - Interleukin-6/genetics/*metabolism MH - Leukocytes, Mononuclear/*cytology MH - Molecular Sequence Data MH - Protein Biosynthesis MH - Stromal Cells/*cytology/metabolism MH - Theilovirus/genetics MH - *Thrombopoiesis MH - Thrombopoietin/genetics/*metabolism MH - Transduction, Genetic EDAT- 2014/09/25 06:00 MHDA- 2015/03/25 06:00 CRDT- 2014/09/25 06:00 PHST- 2014/01/15 00:00 [received] PHST- 2014/05/16 00:00 [revised] PHST- 2014/05/23 00:00 [accepted] PHST- 2014/09/25 06:00 [entrez] PHST- 2014/09/25 06:00 [pubmed] PHST- 2015/03/25 06:00 [medline] AID - 10.1111/trf.12800 [doi] PST - ppublish SO - Transfusion. 2015 Jan;55(1):176-86. doi: 10.1111/trf.12800. Epub 2014 Sep 23.