摘要:
The invention provides a method for generating and selecting drug-sensitizing antisense DNA fragments. In one embodiment, the method includes identifying a gene of interest using knowledge of bacterial physiology, biochemistry, genetics, genomics, and other means. The method includes PCR amplification of a gene of interest using genomic DNA as a template; fragmentation of the DNA by sonication or other means; selecting DNA fragments no longer than 400 base pairs; ligating the DNA fragments into a suitable expression plasmid with a selectable marker; transforming the plasmids containing the DNA fragments into the organism from which the gene of interest originated; and selecting clones from transformed cells that show a phenotypic difference of the clone grown in the presence of the inducer relative to the phenotype in the absence of inducer.
摘要:
The invention provides a method for generating and selecting drug-sensitizing antisense DNA fragments. In one embodiment, the method includes identifying a gene of interest using knowledge of bacterial physiology, biochemistry, genetics, genomics, and other means. The method includes PCR amplification of a gene of interest using genomic DNA as a template; fragmentation of the DNA by sonication or other means; selecting DNA fragments no longer than 400 base pairs; ligating the DNA fragments into a suitable expression plasmid with a selectable marker; transforming the plasmids containing the DNA fragments into the organism from which the gene of interest originated; and selecting clones from transformed cells that show a phenotypic difference of the clone grown in the presence of the inducer relative to the phenotype in the absence of inducer.
摘要:
The invention provides a method for generating and selecting drug-sensitizing antisense DNA fragments. In one embodiment, the method includes identifying a gene of interest using knowledge of bacterial physiology, biochemistry, genetics, genomics, and other means. The method includes PCR amplification of a gene of interest using genomic DNA as a template; fragmentation of the DNA by sonication or other means; selecting DNA fragments no longer than 400 base pairs; ligating the DNA fragments into a suitable expression plasmid with a selectable marker; transforming the plasmids containing the DNA fragments into the organism from which the gene of interest originated; and selecting clones from transformed cells that show a phenotypic difference of the clone grown in the presence of the inducer relative to the phenotype in the absence of inducer.
摘要:
The present invention provides a pharmaceutical composition useful for treating bacterial infections in humans and animals which comprises administering to a human or animal in need thereof, an antibacterially effective combination of a β-lactam antibiotic and an inhibitor of any bacterial peptidoglycan biosynthesis enzyme, especially GlmU, GlmU, MurA, MurB, MurC, MurD, MurE, MurF, MurG, MraY, and UppS. Further provided is a method of discovering synergists for antibiotics including: a) expressing in a cell an antisense nucleic acid against a nucleic acid encoding a gene product so as to reduce the activity or amount of the gene product in the cell, thereby producing a cell sensitized to an antibiotic; b) characterizing the sensitization of the cell to the antibiotic and selecting pairs of antibiotics and genes that result in antibiotic efficacy at one-fifth or less the concentration required in the absence of the antisense gene; c) screening for chemical compounds that inhibit the gene product corresponding to the selected synergistic gene; and d) selecting or creating chemical analogs that inhibit the gene product corresponding to the selected synergistic gene such that the inhibition occurs in the bacteria.
摘要:
The present invention provides a pharmaceutical composition useful for treating bacterial infections in humans and animals which comprises administering to a human or animal in need thereof, an antibacterially effective combination of a β-lactam antibiotic and an inhibitor of any bacterial peptidoglycan biosynthesis enzyme, especially GlmU, GlmU, MurA, MurB, MurC, MurD, MurE, MurF, MurG, MraY, and UppS. Further provided is a method of discovering synergists for antibiotics including: a) expressing in a cell an antisense nucleic acid against a nucleic acid encoding a gene product so as to reduce the activity or amount of the gene product in the cell, thereby producing a cell sensitized to an antibiotic; b) characterizing the sensitization of the cell to the antibiotic and selecting pairs of antibiotics and genes that result in antibiotic efficacy at one-fifth or less the concentration required in the absence of the antisense gene; c) screening for chemical compounds that inhibit the gene product corresponding to the selected synergistic gene; and d) selecting or creating chemical analogs that inhibit the gene product corresponding to the selected synergistic gene such that the inhibition occurs in the bacteria.
摘要:
The present invention provides a pharmaceutical composition useful for treating bacterial infections in humans and animals which comprises administering to a human or animal in need thereof, an antibacterially effective combination of a β-lactam antibiotic and an inhibitor of any bacterial peptidoglycan biosynthesis enzyme, especially GlmU, GlmU, MurA, MurB, MurC, MurD, MurE, MurF, MurG, MraY, and UppS. Further provided is a method of discovering synergists for antibiotics including: a) expressing in a cell an antisense nucleic acid against a nucleic acid encoding a gene product so as to reduce the activity or amount of the gene product in the cell, thereby producing a cell sensitized to an antibiotic; b) characterizing the sensitization of the cell to the antibiotic and selecting pairs of antibiotics and genes that result in antibiotic efficacy at one-fifth or less the concentration required in the absence of the antisense gene; c) screening for chemical compounds that inhibit the gene product corresponding to the selected synergistic gene; and d) selecting or creating chemical analogs that inhibit the gene product corresponding to the selected synergistic gene such that the inhibition occurs in the bacteria.
摘要:
The present invention provides a pharmaceutical composition useful for treating bacterial infections in humans and animals which comprises administering to a human or animal in need thereof, an antibacterially effective combination of a β-lactam antibiotic and an inhibitor of any bacterial peptidoglycan biosynthesis enzyme, especially GlmU, GlmU, MurA, MurB, MurC, MurD, MurE, MurF, MurG, MraY, and UppS. Further provided is a method of discovering synergists for antibiotics including: a) expressing in a cell an antisense nucleic acid against a nucleic acid encoding a gene product so as to reduce the activity or amount of the gene product in the cell, thereby producing a cell sensitized to an antibiotic; b) characterizing the sensitization of the cell to the antibiotic and selecting pairs of antibiotics and genes that result in antibiotic efficacy at one-fifth or less the concentration required in the absence of the antisense gene; c) screening for chemical compounds that inhibit the gene product corresponding to the selected synergistic gene; and d) selecting or creating chemical analogs that inhibit the gene product corresponding to the selected synergistic gene such that the inhibition occurs in the bacteria.
摘要:
Compounds, compositions and methods are provided for modulating the expression of transthyretin. The compositions comprise oligonucleotides, targeted to nucleic acid encoding transthyretin. Methods of using these compounds for modulation of transthyretin expression and for diagnosis and treatment of diseases and conditions associated with expression of transthyretin are provided.
摘要:
Modified oligonucleotides having a conserved G4 sequence and a sufficient number of flanking nucleotides to significantly inhibit the activity of a virus or phospholipase A2 or to modulate the telomere length of a chromosome are provided. G4 quartet oligonucleotide structures are also provided. Methods of prophylaxis, diagnostics and therapeutics for viral-associated diseases and diseases associated with elevated levels of phospholipase A2 are also provided. Methods of modulating telomere length of a chromosome are also provided; modulation of telomere length is believed to play a role in the aging process of a cell and in control of malignant cell growth.
摘要:
Compounds, compositions and methods are provided for modulating the expression of SLC26A2. The compositions comprise oligonucleotides, targeted to nucleic acid encoding SLC26A2. Methods of using these compounds for modulation of SLC26A2 expression and for diagnosis and treatment of disease associated with expression of SLC26A2 are provided.