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Usage Information

Hypoxia-induced in vivo sickling of transgenic mouse red cells.
E M Rubin, … , N Mohandas, S M Clift
E M Rubin, … , N Mohandas, S M Clift
Published February 1, 1991
Citation Information: J Clin Invest. 1991;87(2):639-647. https://doi.org/10.1172/JCI115041.
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Research Article

Hypoxia-induced in vivo sickling of transgenic mouse red cells.

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Abstract

To develop an animal model for sickle cell anemia, we have created transgenic mice that express a severe naturally occurring human sickling hemoglobin, Hb S Antilles. Due to its low solubility and oxygen affinity, Hb S Antilles has a greater propensity to cause red cell sickling than Hb S. To make transgenic animals that express a high level of Hb S Antilles, the erythroid-specific DNAse I hypersensitive site II from the human beta-globin cluster was linked independently to the human alpha 2-globin gene and to the beta S Antilles gene. Embryos were injected with both constructs simultaneously and seven transgenic mice were obtained, three of which contained both the human alpha and the human beta S Antilles transgene. After crossing the human transgenes into the mouse beta-thalassemic background a transgenic mouse line was derived in which approximately half the beta-globin chains in the murine red cells were human beta S Antilles. Deoxygenation of the transgenic red cells in vitro resulted in extensive sickling. An increase of in vivo sickling was achieved by placing these transgenic mice in a low oxygen environment. This murine model for red cell sickling should help to advance our understanding of sickle cell disease and may provide a model to test therapeutic interventions.

Authors

E M Rubin, H E Witkowska, E Spangler, P Curtin, B H Lubin, N Mohandas, S M Clift

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