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Abstract Title:

Harmine, a Novel DNA Methyltransferase 1 Inhibitor in the Leukemia Cell Line.

Abstract Source:

Indian J Hematol Blood Transfus. 2017 Dec ;33(4):509-515. Epub 2017 Jan 17. PMID: 29075061

Abstract Author(s):

Arezoo Oodi, Hamed Norouzi, Naser Amirizadeh, Mahin Nikougoftar, Zahra Vafaie

Article Affiliation:

Arezoo Oodi

Abstract:

DNA methylation followed by tumor suppressor gene repression plays a critical role in the leukemia development. So, DNA methyl transferase inhibitors have great importance in treatment of theses malignancies. Harmine, A beta carboline alkaloid derivative of Peganum harmala, had shown anti- proliferative effects on leukemic cell line. This study aimed to evaluate the effect of Harmine on DNMT1 (DNA methyl transferase 1) expression in a leukemic cell line. Cell proliferation and cell cycle analysis were studied in NB4 cell line after treatment with Harmine for 72 h. DNMT1 expression in treated cells was analyzed by real time PCR. Tumor suppressor gene hypometylation and reactivation was evaluated via MSP analysis and also real time PCR. Harmine reduced cell proliferation in NB4 cell line in a time and dose-dependent manner. 102 µg/ml of Harmine was increased amount of cells in G1 Phase of cell cycle (p < 0.05). Anti proliferative doses of Harmine, has suppressed DNMT1 gene in NB4 cell line. Down-regulated DNMT1 induced p15 tumor suppressor promoter hypomethylation and reactivation. Our data indicate that Harmine can be considered as a potential treatment for AML (Acute Myeloid Leukemia), and future studies are required to test the clinical efficacy of Harmine-whether used as a single agent or as an adjuvant-for AML treatment.

Study Type : In Vitro Study

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