info:eu-repo/semantics/article
Strategy for erythroid differentiation in ex vivo cultures: Lentiviral genetic modification of human hematopoietic stem cells with erythropoietin gene
Fecha
2017-11Registro en:
Cappellino, Luisina Anabel; Kratje, Ricardo Bertoldo; Etcheverrigaray, Marina; Prieto, Claudio; Strategy for erythroid differentiation in ex vivo cultures: Lentiviral genetic modification of human hematopoietic stem cells with erythropoietin gene; Soc Bioscience Bioengineering Japan; Journal of Bioscience and Bioengineering; 124; 5; 11-2017; 591-598
1389-1723
CONICET Digital
CONICET
Autor
Cappellino, Luisina Anabel
Kratje, Ricardo Bertoldo
Etcheverrigaray, Marina
Prieto, Claudio
Resumen
If cultured in appropriate conditions, such as supplementing culture media with costly cytokines and growth factors, hematopoietic stem/progenitor cells (HSPCs) from different origins have shown to be an adequate source of erythroid cells. This requirement turns erythroid cells production into a complicated process to be scaled-up for future applications. The aim of our work was to genetically modify HSPCs with human erythropoietin (hEPO) sequence by lentiviral transgenesis in order for cells to secrete the hormone into the culture medium. Initially, we evaluated erythroid differentiation in colony forming units (CFU) assays and further analyzed cell expansion and erythroid differentiation throughout time in suspension cultures by flow cytometry and May-Grünwald-Giemsa staining. Additionally, we studied hEPO production and its isoforms profile. The different assessment approaches demonstrated erythroid differentiation, which was attributed to the hEPO secreted by the HSPCs. Our data demonstrate that it is possible to develop culture systems in which recombinant HSPCs are self-suppliers of hEPO. This feature makes our strategy attractive to be applied in biotechnological production processes of erythroid cells that are currently under development.