摘要:
This invention provides a robust fermentation process for the expression of a capsid protein of a bacteriophage which is forming a VLP by self-assembly, wherein the process is scalable to a commercial production scale and wherein the expression rate of the capsid protein is controlled to obtain improved yield of soluble capsid protein. This is achieved by combining the advantages of fed-batch culture and of lactose induced expression systems with specific process parameters providing improved repression of the promoter during the growth phase and high plasmid retention throughout the process.
摘要:
The subject the present invention is a method of producing a pharmacologically stable form of purified and lyophilised bacteriophage preparations of increased stability and antibacterial activity, characterised in that phages produced from a bacterial lysate, for example by ultrafiltration on ultrafiltration membranes, containing a high molecular weight preparation of purified phages is stabilised most preferably with a probiotic extract in the presence or absence of neutral salts and/or organic solvents, lyophilised, characterised via HPLC chromatography, by SDS-PAGE, and bacterial lysis biological assays, and then stored under a vacuum, where the active lyophilisate is destined for phage therapy of infections and tumours.
摘要:
The present invention provides a isolated bacteriophage useful as a tool for studying biological, biochemical, physiological and genetic properties of actinomycetes and other organisms which comprises a novel strain of Saccharomonospora having certain specified characteristics. The invention also relates to a process for the isolation of the said bacteriophage and/or DNA phage and to a novel universal growth medium which is particularly useful in the said process. Another embodiment of the process relates to a clonong vector which comprises a plasmid or bacteriophage comprising the phage DNA of the invention.
摘要:
This invention provides a robust fermentation process for the expression of a capsid protein of a bacteriophage which is forming a VLP by self-assembly, wherein the process is scalable to a commercial production scale and wherein the expression rate of the capsid protein is controlled to obtain improved yield of soluble capsid protein. This is achieved by combining the advantages of fed-batch culture and of lactose induced expression systems with specific process parameters providing improved repression of the promoter during the growth phase and high plasmid retention throughout the process.
摘要:
The subject the present invention is a method of producing a pharmacologically stable form of purified and lyophilised bacteriophage preparations of increased stability and antibacterial activity, characterized in that phages produced from a bacterial lysate, for example by ultrafiltration on ultrafiltration membranes, containing a high molecular weight preparation of purified phages is stabilised most preferably with a probiotic extract in the presence or absence of neutral salts and/or organic solvents, lyophilised, characterised via HPLC chromatography, by SDS-PAGE, and bacterial lysis biological assays, and then stored under a vacuum, where the active lyophilisate is destined for phage therapy of infections and tumors.
摘要:
The present invention features composition and methods for treating a bacterial infection using therapeutic bacteriophage having a modified holin gene. The modified holin inactivates the bacterial host prior to production of bacteriophage, so that the bacteriophage infection is non-productive, e.g., few or no bacteriophage are produced as a result of infection of the bacterial host. Thus, holin-modified bacteriophage invade the bacterial host, and cause inactivation of the bacterial host prior to production of a detectable or significant number of phage. Holin-modified phage inhibit the spread of bacterial infection without production of a significant or detectable number of phage progeny. By avoiding the release of phage progeny, the potential for generation of immune responses against the phage is reduced.
摘要:
The present invention provides a isolated bacteriophage useful as a tool for studying biological, biochemical, physiological and genetic properties of actinomycetes and other organisms which comprises a novel strain of Saccharomonospora having certain specified characteristics. The invention also relates to a process for the isolation of the said bacteriophage and/or DNA phage and to a novel universal growth medium which is particularly useful in the said process. Another embodiment of the process relates to a clonong vector which comprises a plasmid or bacteriophage comprising the phage DNA of the invention.
摘要:
The present invention provides a isolated bacteriophage useful as a tool for studying biological, biochemical, physiological and genetic properties of actinomycetes and other organisms which comprises a novel strain of Saccharomonospora having certain specified characteristics. The invention also relates to a process for the isolation of the said bacteriophage and/or DNA phage and to a novel universal growth medium which is particularly useful in the said process. Another embodiment of the process relates to a cloning vector which comprises a plasmid or bacteriophage comprising the phage DNA of the invention.