摘要:
The present invention relates to a method for screening for a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract. The present invention further relates to a method for screening for culture conditions that provide a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract. The present invention further relates to a method for modulating the expression of certain polynucleotides. The present invention further relates to a method for the preparation of a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract. The present invention further relates to a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract. The present invention further relates to a method for the preparation of a food composition. The present invention further relates to a food composition. The present invention further relates to the use of certain polynucleotides in the screening for a bacterium exhibiting enhanced survival properties in the gastro- intestinal tract and/or the screening for culture conditions that provide a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract and/or for the control of culture conditions providing a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract. The present invention further relates to a method for controlling culture conditions providing a bacterium exhibiting enhanced survival properties in the gastro-intestinal tract.
摘要:
The current invention provides methods and means for heterologous expression, production and/or secretion of complex capsular polysaccharides in non- pathogenic, non-invasive Gram-positive bacteria. The invention in particular provides non- pathogenic, non- invasive Gram-positive bacteria capable of expression and/or secretion of heterologous, complex polysaccharides from a pathogenic bacterial species. Such bacteria and polysaccharides produced therein may be applied according to the invention to provide compositions for vaccination for the treatment and prevention of infectious bacterial diseases.
摘要:
The present invention relates to the site-specific production of biologically active substances by recombinant micro-organisms in body cavities of a human or animal subject. The invention provides transcription regulatory sequences, which are specifically induced in the gastrointestinal tract (GI-tract) of subjects and methods for their use for in vivo site-specific expression of nucleic acid sequences encoding biologically active substances.
摘要:
The present invention relates to Gram positive bacteria with increased stress tolerance, reduced virulence, and/or reduced mobility, as a result of an altered CtsR protein. The alteration of the CtsR protein in particular concerns an alteration of the conserved glycine-rich region in the CtsR protein. The invention further relates to nucleic acid encoding the altered CtsR proteins. The altered Gram positive bacteria may be used in fermentation processes and may be used as delivery vehicles for site specific delivery of therapeutic proteins such as vaccines.
摘要:
The present invention relates to a method for converting a carbon-containing substrate of an NAD(P)H-dependent enzyme. A lactic acid bacterium which expresses the NAD(P)H dependent enzyme is used for the conversion. In this way more than 90 % of a substrate may be converted.
摘要:
The present invention relates to a process for preparing alanine, especially L-alanine, by culturing a genetically modified microorganism that is able to produce alanine from glucose, characterized in that the microorganism used is one whose native sugar metabolism has been diverted to alanine formation, especially L-alanine formation, in such a manner that essentially more than 40 %, preferably more than 60 % and more preferably more than 75 % of the carbon consumed from the medium is converted into alanine, especially via pyruvate. The microorganism is preferably a homofermentative microorganism, especially a lactic acid bacterium, more particularly (a strain of) L. lactis, and is preferably a food-grade microorganism. The invention can be used for both the in situ and the stereospecific preparation of alanine. The invention also relates to the microorganisms and recombinant DNA molecules that can be used in the invention and to the alanine and alanine-containing (food) products obtained according to the invention.
摘要:
The present invention relates to immuno modulat ing probiotic lactic acid bacteria, to methods wherein the bacteria are used to reduce allergy, and to food products wherein the bacteria may be in incorporated to reduce allergy upon consumption of the product. Preferred probiotic lactic acid bacteria stimulate the Th1 and/or Th3 responses and/or represses Th2 responses as may be determined by the cytokine profiles that are induced in human peripheral blood mononuclear cells upon coincubation with the lactic acid bacteria.
摘要:
The present invention relates to Gram positive bacteria with increased stress tolerance, reduced virulence, and/or reduced mobility, as a result of an altered CtsR protein. The alteration of the CtsR protein in particular concerns an alteration of the conserved glycine-rich region in the CtsR protein. The invention further relates to nucleic acid encoding the altered CtsR proteins. The altered Gram positive bacteria may be used in fermentation processes and may be used as delivery vehicles for site specific delivery of therapeutic proteins such as vaccines.
摘要:
The present invention relates to immunomodulating probiotic lactic acid bacteria, to methods wherein the bacteria are used to reduce allergy, and to food products wherein the bacteria may be in incorporated to reduce allergy upon consumption of the product. Preferred probiotic lactic acid bacteria stimulate the Th1 and/or Th3 responses and/or represses Th2 responses in vivo asmay be determined by the cytokine profiles that are induced in humans upon consumption of the lactic acid bacteria.
摘要:
The invention relates to a polypeptide which is able to interact with a DC-SIGN and to a host cell overexpressing this polypetide. Such polypeptide and/or encoding nucleic acid molecule and/or corresponding nucleic acid construct and/or sai d host cell are used as medicament, preferably for preventing or treating inflammatory gastrointestinal tract disease and/or inducing tolerance.