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Mechanism of As(2)O(3) on hdpr1 gene demethylation in Jurkat cell line / 中国实验血液学杂志
Journal of Experimental Hematology ; (6): 1484-1488, 2010.
Article Dans Chinois | WPRIM | ID: wpr-332333
ABSTRACT
This study was purposed to investigate the effect of As(2)O(3) on the demethylation of anti-oncogene-hdpr1 gene of acute lymphoblastic leukemia cell line Jurkat in vitro and its mechanism. The inhibitory effect of As(2)O(3) on the proliferation of Jurkat cells was assayed by CCK-8; the change of Jurkat cell cycle was detected by flow cytometry before and after using As(2)O(3); the effect of As(2)O(3) on the methylation model of hdpr1 gene was analyzed by methylation-specific PCR, and the effect of As(2)O(3) on the expression of hdpr1 mRNA was analyzed by semiquantitative RT-PCR. The results showed that the proliferation rate of Jurkat cells was decreased significantly after being treated with As(2)O(3), and in dose-and time-dependent manner; As(2)O(3) blocked Jurkat cell cycle in G(0)/G(1) phase in dose-dependent manner. As(2)O(3) could reverse hypermethylation of hdpr1 gene and induce its mRNA reexpression, and down-regulate the dnmt1, dnmt3a, dnmt3b mRNA expression level also in dose-dependent manner. It is concluded that the As(2)O(3) suppresses the proliferation of Jurkat cells and blocks cell cycle is G(0)/G(1), its possible mechanism may be down-regulating mRNA expression level of dnmt1, dnmt3a and dnmt3b, induce demethylation of hdpr1 gene from abnormal hypermethylation status and activates its reexpression.
Sujets)
Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Oxydes / Pharmacologie / Composés de l'arsenic / Protéines nucléaires / Cycle cellulaire / Gènes suppresseurs de tumeur / Cellules Jurkat / Méthylation de l'ADN / Protéines adaptatrices de la transduction du signal / Prolifération cellulaire Limites du sujet: Humains langue: Chinois Texte intégral: Journal of Experimental Hematology Année: 2010 Type: Article

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Texte intégral: Disponible Indice: WPRIM (Pacifique occidental) Sujet Principal: Oxydes / Pharmacologie / Composés de l'arsenic / Protéines nucléaires / Cycle cellulaire / Gènes suppresseurs de tumeur / Cellules Jurkat / Méthylation de l'ADN / Protéines adaptatrices de la transduction du signal / Prolifération cellulaire Limites du sujet: Humains langue: Chinois Texte intégral: Journal of Experimental Hematology Année: 2010 Type: Article