國家衛生研究院 NHRI:Item 3990099045/3903

NHRI > National Institute of Infectious Diseases and Vaccinology > Shu-Ching Hsu > Periodical Articles > Item 3990099045/3903

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Title:	Characterization and transplantation of induced megakaryocytes from hematopoietic stem cells for rapid platelet recovery by a two-step serum-free procedure
Authors:	Chen, TW;Hwang, SM;Chu, IM;Hsu, SC;Hsieh, TB;Yao, CL
Contributors:	Vaccine Research and Development Center
Abstract:	Objective: A complete process for mass generation of megakaryocytes from hematopoietic stem cells under serum-free conditions has great clinical potential for rapid platelet reconstruction in thrombocytopenia patients. We have previously reported on the generation of an optimized serum-free medium (serum-free hematopoietic stem cell medium) for ex vivo expansion of CD34+ cells. Here, we further generated large amounts of functional megakaryocytes from serum-free expanded CD34+ cells under a complete and optimal serum-free condition for complying with clinical regulations. Materials and Methods: Serum substitutes and cytokines were screened and optimized for their concentration for megakaryocyte generation by systemically methods. Serum-free induced megakaryocytes were characterized by surface antigens, gene expression, ex vivo megakaryocyte activation ability, and ability of megakaryocyte and platelet recovery in nonobese diabetic/severe combined immunodeficient mice. Results: The optimal serum-free megakaryocyte induction medium was Iscove's modified Dulbecco's medium containing serum substitutes (i.e., human serum albumin, human insulin, and human transferrin) and a cytokine cocktail (i.e., thrombopoietin, stem cell factor, Fms-like tyrosine kinase 3 ligand, interleukin-3, interleukin-6, interleukin-9, and granulocyte-macrophage colony-stimulating factor). After induction, induced megakaryocytes expressed CD41a and CD61 surface antigens, nuclear factor erythroid-derived 2 and GATA-1 transcription factors and megakaryocyte activation ability. Importantly, transplantation of induced megakaryocytes could accelerate megakaryocyte and platelet recovery in irradiated nonobese diabetic/severe combined immunodeficient mice. Conclusion: In conclusion, we have developed a serum-free megakaryocyte induction medium, and the combination of serum-free megakaryocyte and serum-free hematopoietic stem cell media can generate a large amount of functional megakaryocytes efficiently. Our method represents a promising source of megakaryocytes and platelets for future cell therapy.
Date:	2009-11
Relation:	Experimental Hematology. 2009 Nov;37(11):1330-1339.
Link to:	http://dx.doi.org/10.1016/j.exphem.2009.07.012
JIF/Ranking 2023:	http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=0301-472X&DestApp=IC2JCR
Cited Times(WOS):	https://www.webofscience.com/wos/woscc/full-record/WOS:000271495000008
Cited Times(Scopus):	http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=70349835131
Appears in Collections:	[Shu-Ching Hsu] Periodical Articles

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