RESUMO
Gene mutation of Candida albicans is one of the main causes for azole drug resistance. Different types of variation play different roles in promoting the process of drug resistance. ERG series of gene mutations primarily affect the ergosterol synthesis pathway. When the regulatory factors TAC1 for CDR1 gene and Mrr1 for MDR1 gene generate mutations, the expression level of drug efflux pump protein in Candida albicans may be changed. In addition, gene copy number variation is also gaining attention. Therefore, the research of mutation resistance-associated genes has a positive meaning to explore the mechanism of drug resistance in Candida albicans.
Assuntos
Membro 1 da Subfamília B de Cassetes de Ligação de ATP , Genética , Antifúngicos , Farmacologia , Azóis , Farmacologia , Candida albicans , Genética , Sistema Enzimático do Citocromo P-450 , Genética , Variações do Número de Cópias de DNA , Farmacorresistência Fúngica , Proteínas Fúngicas , Genética , Proteínas de Membrana Transportadoras , Genética , Mutação , GenéticaRESUMO
Polyamides, containing N-methylpyrrole (Py) and N-methyl-imidazole (Im) amino acids, are synthetic oligomers programmed to read the DNA double helix in the minor groove with high affinities and sequence specificities resulting in modulation of gene expression. They are cell permeable, stable and have no cytotoxicity, which provide a promising tool of gene regulation. We describe here recent advances in the field of DNA binding polyamides, including pairing rules, specifities and affinities to DNA, synthesis methods, cellular and nuclear uptake properties, gene regulation and effectiveness in vivo. The potential problems and difficulties in future research are also discussed.