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Blood, 1 February 2004, Vol. 103, No. 3, pp. 852-859.
Prepublished online as a Blood First Edition Paper on October 2, 2003; DOI 10.1182/blood-2003-04-1030.
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HEMATOPOIESIS
The in vitro production and characterization of neutrophils from embryonic stem cells
Jonathan G. Lieber,
Saiphone Webb,
Benjamin T. Suratt,
Scott K. Young,
Gary L. Johnson,
Gordon M. Keller, and
G. Scott Worthen
From the Department of Medicine and the Department of Immunology, National Jewish Medical and Research Center, Denver, CO; the Department of Medicine and the Department of Pharmacology, University of Colorado; and the Institute for Gene Therapy and Molecular Medicine, Mount Sinai School of Medicine, New York, NY.
An embryonic stem (ES) cell/OP9 coculture system for the effective production of functional neutrophils is described. A 3-step differentiation strategy was developed that uses liquid culture, enabling reliable and abundant production of neutrophils at high purity without the need of sorting for isolation of mature neutrophils. Use of the OP9 stromal cell line significantly enhances the number, percentage, and duration of differentiated neutrophils produced from embryonic stem cells. Effective and sustained differentiation of ES cells into neutrophils provides a useful model system for studying neutrophil differentiation and function and the factors that regulate them. Morphologic and functional evaluation of these ES-derived neutrophils indicates that large numbers of mature neutrophils can be produced from pluripotent ES cells in vitro. Specifically, their morphology, ability to produce superoxides, flux calcium, undergo chemotaxis in response to macrophage inflammatory protein 2 (MIP-2), stain for the granulocyte-specific marker–specific chloroacetate esterase, and contain the neutrophil-specific markers Gr-1 and the mouse neutrophil-specific antigen indicates that they are comparable with purified mouse bone marrow neutrophils. They also express gelatinase and lactoferrin granule proteins. During the differentiation of these ES-derived neutrophils, regional areas of neutrophil production can be identified that have been designated as neutrophil generating regions (NGRs).
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