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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Erythroid maturation and globin gene expression in mice with combined deficiency of NF-E2 and nrf-2.

NF-E2 binding sites, located in distant regulatory sequences, may be important for high level alpha- and beta-globin gene expression. Surprisingly, targeted disruption of each subunit of NF-E2 has either little or no effect on erythroid maturation in mice. For p18 NF-E2, this lack of effect is due, at least in part, to the presence of redundant proteins. For p45 NF-E2, one possibility is that NF-E2-related factors, Nrf-1 or Nrf-2, activate globin gene expression in the absence of NF-E2. To test this hypothesis for Nrf-2, we disrupted the Nrf-2 gene by homologous recombination. Nrf-2-deficient mice had no detectable hematopoietic defect. In addition, no evidence was found for reciprocal upregulation of NF-E2 or Nrf-2 protein in fetal liver cells deficient for either factor. Fetal liver cells deficient for both NF-E2 and Nrf-2 expressed normal levels of alpha- and beta-globin. Mature mice with combined deficiency of NF-E2 and Nrf-2 did not exhibit a defect in erythroid maturation beyond that seen with loss of NF-E2 alone. Thus, the presence of a mild erythroid defect in NF-E2-deficient mice is not the result of compensation by Nrf-2.[1]


  1. Erythroid maturation and globin gene expression in mice with combined deficiency of NF-E2 and nrf-2. Martin, F., van Deursen, J.M., Shivdasani, R.A., Jackson, C.W., Troutman, A.G., Ney, P.A. Blood (1998) [Pubmed]
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