Publication: Secretory factors from OP9 stromal cells delay differentiation and increase the expansion potential of adult erythroid cells in vitro
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Issued Date
2018-12-01
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ISSN
20452322
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2-s2.0-85041631646
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Mahidol University
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SCOPUS
Bibliographic Citation
Scientific Reports. Vol.8, No.1 (2018)
Suggested Citation
Kongtana Trakarnsanga, Marieangela C. Wilson, Kate J. Heesom, Tatyana N. Andrienko, Chatchawan Srisawat, Jan Frayne Secretory factors from OP9 stromal cells delay differentiation and increase the expansion potential of adult erythroid cells in vitro. Scientific Reports. Vol.8, No.1 (2018). doi:10.1038/s41598-018-20491-1 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/47482
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Title
Secretory factors from OP9 stromal cells delay differentiation and increase the expansion potential of adult erythroid cells in vitro
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Abstract
© 2018 The Author(s). Development of in vitro culture systems for the generation of red blood cells is a goal of scientists globally with the aim of producing clinical grade products for transfusion. Although mature reticulocytes can be efficiently generated by such systems, the numbers produced fall short of that required for therapeutics, due to limited proliferative capacity of the erythroblasts. To overcome this hurdle, approaches are required to increase the expansion potential of such culture systems. The OP9 mouse stromal cell line is known to promote haematopoietic differentiation of pluripotent stem cells, however an effect of OP9 cells on erythropoiesis has not been explored. In this study, we show not only OP9 co-culture, but factors secreted by OP9 cells in isolation increase the proliferative potential of adult erythroid cells by delaying differentiation and hence maintaining self-renewing cells for an extended duration. The number of reticulocytes obtained was increased by approximately 3.5-fold, bringing it closer to that required for a therapeutic product. To identify the factors responsible, we analysed the OP9 cell secretome using comparative proteomics, identifying 18 candidate proteins. These data reveal the potential to increase erythroid cell numbers from in vitro culture systems without the need for genetic manipulation or co-culture.