ABSTRACT
Antibiotic-resistance has become a serious problem to human health. Innovative approaches are urgently required for both antimicrobial drug discovery and reversal of resistance. Great success has been achieved since the introduction of antisense technology. This review focuses on the applications of antisense technology in the aspects including identification and validation of novel antibacterial drug targets, screening of antibacterial drugs from natural products using hypersensitized strains engineered by inducible antisense RNA, and inhibition of antibiotic-resistance genes to reverse susceptibility of antibiotic-resistant strains to currently used antibiotics. In addition, the antibacterial activities, the shortcomings and prospects as antibacterial drugs of synthetic antisense oligodeoxynucleotides and their analogs are also assessed in this review.
ABSTRACT
Objective:To explore the effect of inhibiting c-raf-1 by antisense technology on radiosensitivity in human cervical carcinoma cell line HeLa.Methods:There were four groups in the study:control group,lipofectin group,sense oligodexynucleotides(S-ODN) group,antisense oligodexynucleotides(AS-ODN) group.The expression of c-raf-1 was detected by means of RT-PCR,Cellular response to irradiation was evaluated by the colony forming test,Apoptosis was observed by fluorescent staining.Bcl-2 protein expression was determined by flow cytometry.Results:AS-ODN group could significantly decreased the proliferation rate and increasing the apoptosis rate,significantly downregulating the expression of Bcl-2 of irradiated human cervical carcinoma cells,(vs lipofectin group or S-ODN group,P
ABSTRACT
According to the base complementation, the principle antisense technology is the sequence specific binding of complementary antisense nucleic acids or their chemical modification to the nucleic acids in cells, resulting in the suppression or prevention of gene translation. For the treatment of cancer, a lot of antisense drugs have been designed, which target the genes involved in the pathogenesis of cancer. And some of them have been in clinical trials. The author reviewed the progress of the clinical trials of these antisense drugs.