摘要:
Compositions and methods are provided for preventing, ameliorating, or treating a disease caused by a species of bacterial genus Vibrio, for example, cholera caused by V. cholerae, the compositions containing two or more strains of lytic bacteriophage that infect and kill Vibrio cells. The bacteriophage are virulent, which replicate intracellularly and lyse and kill the bacteria. Use of two or more strains in a single treatment, as a result of a rate of mutation of the bacteria to simultaneous resistance to all of the bacteriophage to be so low as to be negligible, reduces appearance of phage-resistant bacteria to statistical negligibility. Normal human microbial flora species were not affected. In alternative embodiments of the method and the composition, antibiotic agents or other treatment agents can be administered with a cocktail of the plurality of bacteriophage strains.
摘要:
The present invention relates to recombinant antigenic S. pneumoniae polypeptides and fragments thereof. The invention also relates to methods for using these polypeptides to produce immunological responses and to confer immunological protection to disease caused by members of the genus Streptococcus, at least isolates of the S. pneumoniae genus. The invention further relates to nucleic acid sequences which encode antigenic S. pneumoniae polypeptides and to methods for detecting S. pneumoniae nucleic acids and polypeptides in biological samples. The invention also relates to S. pneumoniae -specific antibodies and methods for detecting such antibodies produced in a host animal.
摘要:
The present invention includes compositions and methods of co-transformation of naturally competent cells. In one aspect of the invention, a method is included for introducing nucleic acid sequences into one or more naturally competent cells in parallel. In other aspects, a heterogenic pool of co-transformed naturally competent cells and an apparatus for introducing two or more populations of nucleic acid sequences into a population of naturally competent cells in parallel are also included.
摘要:
According to some aspects of the invention, provided herein are methods of amplifying nucleic acids using homopolymer-mediated ligation. The methods, in some embodiments, comprise adding a first homopolymer of at least 12 nucleotides to each 3' end of blunt-ended double-stranded nucleic acid containing a target nucleic acid, thereby producing a partially double-stranded nucleic acid.
摘要:
The methods and compositions of the present invention are directed to a vaccine against Vibrio cholerae comprised of V. cholerae outer membrane vesicles (OMVs). Such vaccines are relatively stable, facilitating distribution. Inventive methods generally include administration of a vaccine against Vibrio cholerae by intranasal, intraperitoneal, oral or intragastric routes. Such vaccines confer immunity to the individual, and when administered to pregnant subjects, can be conferred to the offspring of individuals.