UNIT 22F.6 Culture, Expansion, and Differentiation of Murine Megakaryocytes
Published Online: 1 JUL 2005
Copyright © 2005 by John Wiley & Sons, Inc.
Lab Protocol Title
Current Protocols in Immunology
How to Cite
Shivdasani, R. A. and Schulze, H. 2005. Culture, Expansion, and Differentiation of Murine Megakaryocytes. Current Protocols in Immunology. 67:F:22F.6:22F.6.1–22F.6.13.
- Published Online: 1 JUL 2005
- Published Print: JUN 2005
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Megakaryocytes (MKs) are the source of circulating platelets and are readily recognized by their large size and distinctive morphology. Their poor representation in hematopoietic tissues often requires considerable ex vivo expansion to generate cells for biochemical and cell biological studies. These experimental protocols describe the assessment of megakaryocytic potential within hematopoietic precursor cells in the bone marrow by colony-forming assays and expansion and enrichment of MKs from cultured fetal liver or spleen or bone marrow cells. Although these MKs are not synchronized in their maturation, they can be enriched over an albumin step-gradient and one-third to one-half of recovered cells will typically elaborate proplatelets, the immediate precursors of blood platelets. Both protocols require recombinant thrombopoietin (TPO) as a growth factor. Support Protocols describe methods for preparing fetal liver cells, identifying mature rodent MKs by staining for acetylcholinesterase activity, and staining (May-Grünwald-Giemsa) mixed populations on cytocentrifuged blood cell preparations.
- hematopoietic progenitors;
- fetal liver culture