摘要:
The invention relates to .beta.(1.fwdarw.6) glucosamine disaccharides having general formula (I) to a method for preparing these disaccharides, comprising the steps of: i) providing a starting material comprising lipid A moiety of lipopolysaccharide-comprising microorganisms; and ii) subjecting the starting material to an alkaline treatment such as lipid A moiety is O-deacylated at the 3-position and at the 3'-position, to pharmaceutical compositions comprising as an active ingredient these disaccharides, and to these disaccharides for use as an immunomodulating agent, anti-tumor agent, and vaccine component.
摘要:
An extract based on modified bacterial proteins includes a mixture of acid bacterial polyanions having a molecular weight in the range from 10,000 to 1,000,000 and an isoelectric point in the range from 2.5 to 5.5, and in which the added weights of the constituent amino acids amount to at least 50% of the extract. The preparation or this protein extract includes a cultivation of bacteria in an aqueous medium and then the alkaline extraction of this bacterial suspension and the purification of the protein extract. The alkaline extraction is carried out in the presence of a dilute aqueous source of OH.sup.- ions and at a stable pH in the range from 11 to 13, the decrease of this pH during the acid extraction not exceeding 0.4. The protein extract thus obtained can be used as an active ingredient in a pharmaceutical composition.
摘要:
An extracellular exopolymer endowed with immunomodulating properties is prepared by culturing the Bifidobacterium infantis longum strain deposited at the Institut Pasteur under No. I-885 in a suitable medium under anaerobic conditions. After the microorganisms are discarded from the culture medium, the exopolymer thus produced is isolated, concentrated and then precipitated by adding an organic solvent; finally the product resulting from the precipitation is lyophilized.The exopolymer thus obtained possesses an activity on cellular as well as on humoral immunity, and could thus be used as an immunomodulating agent in any potential therapeutic application.
摘要:
Compounds of the formula wherein the substitutents are defined as in the specification useful for modulating immune responses in warm-blooded animals.
摘要:
Method of using immunomodulatory compounds for treating diseases related to an overproduction of inflammatory cytokines, including diseases selected from asthma, atopic dermatitis, allergic rhinitis, prostatitis, inflammatory bowel disease, diabetes, and rhumatoid arthritis, the compounds being of general formula (I): wherein: m and n, independently from each other, are an integer ranging from 1 to 4, X and Y represent —COOH, —O—P(O)(OH)2, —O—SO2(OH), —NH2, —OH, —CONH(CH2)n1—NH2, —CO—NH—CH(COOH)—(CH2)n1—COOH, —CO—NH—CH(COOH)—(CH2)n1—NH2, —O—CO—(CH2)n1—NH2, —O—CO—(CH2)n1—CHOH—CH2OH, —O—CO—(CH2)n1—OH, —O—CO—(CH2)n1—COOH, —O—CO—(CH2)n1—CHO, —O—CO—(CH2)n1—NH—CO—(CH2)n2—COOH, R1 and R2 each designate an acyl group derived from a saturated or unsaturated, straight- or branched-chain carboxylic acid having from 2 to 18 carbon atoms, which is unsubstituted or bears one to three substituents selected among hydroxyl, dihydroxyphosphoryloxy, alkyl of 2 to 18 carbon atoms, alkoxy of 2 to 18 carbon atoms, acyloxy of 2 to 18 carbon atoms in the acyl moiety, amino, acylamino.
摘要:
The present invention relates to a novel process for the chemical synthesis of β-(1->6)-linked glucosamine disaccharides of the formula (1) and (intermediate) compounds relating to the process. According to further aspects the invention relates to compositions comprising the compounds and the use of the compounds in the synthesis of disaccharides and medicine.
摘要:
The present invention is directed in particular to dipeptide-like compounds derived from functionally substituted amino acids, having fatty acid chains bound thereto through amidification of the amine functional groups of said dipeptide-like compounds, one end portion of which bears an accessory functional side chain spacer, with the other end portion being an acid group either in neutral or charged state. Compounds of the present invention have immunomodulating properties like adjuvants, In addition, compounds of the invention can be grafted on a given antigen in order to modulate or tune the immune response or can be equally grafted on a pharmaceutical carrier to enhance the therapeutic effect or targetting thereof. Accordingly, compounds of the invention find use in human and veterinary medicine both as immunogens and diagnostic tools.
摘要:
Method of using immunomodulatory compounds for treating diseases related to an overproduction of inflammatory cytokines, including diseases selected from asthma, atopic dermatitis, allergic rhinitis, prostatitis, inflammatory bowel disease, diabetes, and rheumatoid arthritis, the compounds being of general formula (I): wherein: m and n, independently from each other, are an integer ranging from 1 to 4, X and Y represent —COON, —O—P(O)(OH)2, —O—S02(OH), —NH2, —OH, —CONH(CH2)n1—NH2, —CO—NH—CH(COOH)—(CH2)n1—COOH, —CO—NH—CH(COOH)—(CH2)n1—NH2, —O—CO—(CH2)n1—NH2, —O—CO—(CH2)n1—CHOH—CH2OH, —O—CO—(CH2)n1—OH, —O—CO—(CH2)n1—COOH, —O—CO—(CH2)n1—CHO, —O—CO—(CH2)n1—NH—CO—(CH2)n2—COOH, R1 and R2 each designate an acyl group derived from a saturated or unsaturated, straight-or branched-chain carboxylic acid having from 2 to 18 carbon atoms, which is unsubstituted or bears one to three substituents selected among hydroxyl, dihydroxyphosphoryloxy, alkyl of 2 to 18 carbon atoms, alkoxy of 2 to 18 carbon atoms, acyloxy of 2 to 18 carbon atoms in the acyl moiety, amino, acylamino.
摘要:
The present invention is directed in particular to dipeptide-like compounds derived from functionally substituted amino acids, having fatty acid chains bound thereto through amidification of the amine functional groups of said dipeptide-like compounds, one end portion of which bears an accessory functional side chain spacer, with the other end portion being an acid group either in neutral or charged state.Compounds of the present invention have immunomodulating properties like adjuvants, In addition, compounds of the invention can be grafted on a given antigen in order to modulate or tune the immune response or can be equally grafted on a pharmaceutical carrier to enhance the therapeutic effect or targeting thereof. Accordingly, compounds of the invention find use in human and veterinary medicine both as immunogens and diagnostic tools.
摘要:
The present invention is directed in particular to dipeptide-like compounds derived from functionally substituted amino acids, having fatty acid chains bound thereto through amidification of the amine functional groups of said dipeptide-like compounds, one end portion of which bears an accessory functional side chain spacer, with the other end portion being an acid group either in neutral or charged state.Compounds of the present invention have immunomodulating properties like adjuvants, In addition, compounds of the invention can be grafted on a given antigen in order to modulate or tune the immune response or can be equally grafted on a pharmaceutical carrier to enhance the therapeutic effect or targeting thereof. Accordingly, compounds of the invention find use in human and veterinary medicine both as immunogens and diagnostic tools.