Abstract
The aim of the present study was to identify molecular analogs of angelicin (ANG) able to increase erythroid differentiation of K562 cells and expression of γ-globin genes in human erythroid precursor cells, with low effects on apoptosis. ANG-like molecules are well-known photosensitizers largely used for their antiproliferative activity in the treatment of different skin diseases (i.e., psoriasis, vitiligo, eczema, and mycosis fungoides). To verify the activity of these derivatives, we employed three experimental cell systems: (1) the human leukemic K562 cell line, (2) K562 cell clones stably transfected with a pCCL construct carrying green-EGFP under the γ-globin gene promoter, and (3) the two-phase liquid culture of human erythroid progenitors isolated from normal donors and β-thalassemia patients. The results of our study suggest that trimethyl ANG is a powerful inducer of erythroid differentiation, compared with known inducers, such as ANG, cytosine arabinoside, mithramycin, and cisplatin. These data could have practical relevance, because pharmacologically mediated regulation of human γ-globin gene expression, with the consequent induction of fetal hemoglobin, is considered a potential therapeutic approach in hematological disorders including β-thalassemia and sickle cell anemia.
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Acknowledgment
R.G. is granted by AIRC, Fondazione Cariparo (Cassa di Risparmio di Padova e Rovigo), Cofin-2005, by STAMINA Project (University of Ferrara), by UE ITHANET Project and by Telethon Project (GGP07257). This research was also supported by Regione Emilia–Romagna (Spinner Project) and by Associazione Veneta per la Lotta alla Talassemia, Rovigo.
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Lampronti, I., Bianchi, N., Zuccato, C. et al. Increase in γ-globin mRNA content in human erythroid cells treated with angelicin analogs. Int J Hematol 90, 318–327 (2009). https://doi.org/10.1007/s12185-009-0422-2
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DOI: https://doi.org/10.1007/s12185-009-0422-2