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Hernández-Díaz Yazmín González-Castro Thelma Beatriz Tovilla-Zárate Carlos Alfonso López-Narváez María Lilia Genis-Mendoza Alma Delia Castillo-Avila Rosa Giannina Ramos-Méndez Miguel Ángel Juárez-Rojop Isela Esther 《Metabolic brain disease》2021,36(8):2415-2424
Metabolic Brain Disease - Schizophrenia is a debilitating mental illness. Levels of oxytocin have been proposed as a biomarker of schizophrenia; however, the observed levels of oxytocin in... 相似文献
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Beatriz Montaner Wilmar Castillo-Avila Marc Martinell Rupert Ollinger Joan Aymami Ernest Giralt Ricardo Pérez-Tomás 《Toxicological sciences》2005,85(2):870-879
Prodigiosin is a red pigment produced by Serratia marcescens with apoptotic activity. We examined the mechanism of action of this tripyrrole alkaloid, focusing on its interaction with DNA and its ability to inhibit both topoisomerase I and topoisomerase II. We also evaluated the DNA damage induced in cancer cell lines. Prodigiosin-DNA intercalation was analyzed using a competition dialysis assay with different DNA base sequences. Topoisomerase I and II inhibition was studied in vitro by a cleavage assay, and in cultured cells, by analysis of its ability to form covalent complexes. Furthermore, we analyzed DNA damage by pulse-field gel electrophoresis and by immunocytochemistry. Apoptosis inducing factor (AIF)/phospho-H2AX (p-H2AX) double labeling by confocal microscopy was performed to determine the possible implication of AIF in the prodigiosin-DNA damage. Finally, we studied the ability of this drug to induce copper-mediated DNA damage at different pH by a DNA cleavage assay. Our results demonstrate prodigiosin-DNA interaction in vitro and in cultured cells. It involves prodigiosin-DNA intercalation, with some preference for the alternating base pairs but with no discrimination between AT or CG sequences, dual abolition of topoisomerase I and II activity and, as consequence, DNA cleavage. Prodigiosin-DNA damage is independent of AIF. Furthermore, we found that copper-mediated cleavage activity is associated with pH (occurring at pH 6.8 rather than pH 7.4) and with the Cu(2+) ion concentration. These results indicate DNA a therapeutic target for prodigiosin and could explain the apoptosis mechanism of action induced by this antineoplastic drug. 相似文献
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Hernández-Díaz Yazmin Tovilla-Zárate Carlos Alfonso Castillo-Avila Rosa Giannina Juárez-Rojop Isela Esther Genis-Mendoza Alma Delia López-Narváez María Lilia Villar-Juárez Guillermo Efrén González-Castro Thelma Beatriz 《European archives of psychiatry and clinical neuroscience》2023,273(1):5-14
European Archives of Psychiatry and Clinical Neuroscience - Several association studies have indicated that the HTR1A gene is associated with suicidal behavior (SB). Thus, a systematic assessment... 相似文献
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