JOURNAL ARTICLE

Erythroid differentiation is augmented in Reelin-deficient K562 cells and homozygous reeler mice

Hui-Chun Chu, Hsing-Ying Lee, Yen-Shu Huang, Wei-Lien Tseng, Ching-Ju Yen, Ju-Chien Cheng, Ching-Ping Tseng
FEBS Letters 2014 January 3, 588 (1): 58-64
24239537
Reelin is an extracellular glycoprotein that is highly conserved in mammals. In addition to its expression in the nervous system, Reelin is present in erythroid cells but its function there is unknown. We report in this study that Reelin is up-regulated during erythroid differentiation of human erythroleukemic K562 cells and is expressed in the erythroid progenitors of murine bone marrow. Reelin deficiency promotes erythroid differentiation of K562 cells and augments erythroid production in murine bone marrow. In accordance with these findings, Reelin deficiency attenuates AKT phosphorylation of the Ter119(+)CD71(+) erythroid progenitors and alters the cell number and frequency of the progenitors at different erythroid differentiation stages. A regulatory role of Reelin in erythroid differentiation is thus defined.

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