37 results about "Antimycobacterial" patented technology

Vaccine compositions for boosting immunity to mycobacteria when administered in mid-life in a subject who has been vaccinated neonatally or in early childhood with BCG and in whom protective immunity has waned comprise one or more purified immunogenic proteins from Mycobacterium tuberculosis from a group of 30 proteins that stimulate T cell immunity and interferon-γ secretion. A preferred protein is Ag85A, the secreted product (SEQ ID NO:31) of the Rv3084c gene. Also disclosed are methods for boosting immunity in such BCG-vaccinated subjects comprising administering an effective amount of the above vaccine composition.

The invention provides for the use of antimicrobial chemical entities based on a nitrothiazolide backbone that exhibit anti-mycobacteria activity, including the mycobacterium causing tuberculosis. Multiple compounds were synthesized and screened for anti-tuberculosis activity. Disclosed herein are a series of compounds with anti-tuberculosis activity, including six leads that completely inhibited bacterial growth at 5 micrograms per ml or less. Three of these compounds were tested to determine MIC and these ranged between 1 and 4 micrograms per ml against both drug susceptible Mycobacterium tuberculosis strains and strains that are multi-drug resistant (MDR) including XDR strains. The compounds developed are derived from parent compound nitazoxanide, which had no inhibitory activity in the stringent testing format used herein. The derivatives were synthesized using a di-nitro-thiophene or 4-Chloro-5-Nitro-thiazole scaffold and R groups connected via a peptide bond (NHCO) to cyclic compounds such as benzene, thiophene or furans. Many of these compounds have broad spectrum activity against Gram positive bacteria including Staphylococcus aureus (MRSA) and Staphylococcus epidermidis. Several of these lead compounds were not toxic for mice at 200 mg / Kg doses administered over a period of three days.

The invention provides novel Class I HLA-A2 and Class II HLA-DR4-restricted epitopes and methods for their use in detecting T-cells in peripheral blood specific for infection or latency of mycobacterial infection, including M. tuberculosis and M. leprae as others. For example, methods for diagnosing the presence of infection or exposure by M. tuberculosis utilize multimers of HLA monomers or modified monomers having a bound HLA-binding peptide to perform high throughput screening of patient PBLs. The methods can be used for monitoring the success of anti mycobacterial treatment in patients and to screen vaccines and drugs for effectiveness in treating or preventing exposure, infection and latency of mycobacteria in humans.

Provided herein are genetically modified arenaviruses suitable as vaccines against mycobacterial infections. The invention also relates to pharmaceutical compositions and methods for the prevention and treatment of mycobacterial infections. Specifically, provided herein are pharmaceutical compositions, vaccines, and methods of preventing and treating infections in Mycobacterium tuberculosis.

Novel compounds belonging to the class of oxazolidinones possessing potent antimycobacterial properties especially useful in the treatment of acid fast organisms such as Mycobacterium tuberculosis, Mycobacterium avium-intracellular complex, M. fortuitum and M. kansai. The compound and its pharmaceutically acceptable salts thereof act as antibacterial agents. Also disclosed is a method for inhibiting growth of mycobacterial cells as well as a method of treating mycobacterial conditions such as Mycobacterium tuberculosis, drug resistant Mycobacterium tuberculosis, Mycobacterium avium-intracellular complex, M. fortuitum and M. kansai, comprising administering an antimycobacterially effective amount of the said compound and / or pharmaceutically acceptable salts thereof. There is also disclosed a process for the manufacture of the said compound or its pharmaceutically acceptable salts.

The present invention relates to novel benzothiazin derivatives and their use as antibacterial agents in infectious diseases of mammals (humans and animals) caused by bacteria, especially diseases like tuberculosis (TB) and leprosy caused by mycobacteria.The present invention aims at the generation of new compounds with activity against mycobacteria as potential new tuberculosis drugs to overcome problems concerning resistance and drug intolerance.The solution of the present invention is a compound of the formula Iwherein R1 and R2 are, independently each from other, NO2, CN, CONR7R8, COOR9, CHO, halogen, NR7R8, SO2NR7R8, SR9, OCF3, mono-, di or trifluoromethyl;R3 and R4 are, independently each from other, H, a saturated or unsaturated, linear or branched aliphatic radical having 1-7 chain members, cycloalkyl having 3-6 carbon atoms, benzyl, SR9, OR9;R5 and R6 are, independently each from other, a saturated or unsaturated, halogenated or unhalogenated, linear or branched aliphatic radical having 1-8 chain members, cycloalkyl having 3-6 carbon atoms, phenyl, or R5 and R6 together represent a bivalent radical —(CR92)m—, or R5 and R6 together represent bivalent radicals:wherein m is 1-4, or represent bivalent radicals a saturated or unsaturated mono or polyheterocycles with heteroatoms N, S, O and substituted by (R10)x, wherein x is 1-4;R7, R8 and R9 are, independently each from other H or a saturated or unsaturated, halogenated or unhalogenated, linear or branched aliphatic radical having 1-7 chain members, mono-, di or trifluoromethyl, halogen, phenyl, or R3 and R4 together represent a bivalent radical —(CH2)n— wherein n is 2-7;R10 is H or a saturated or unsaturated, halogenated or unhalogenated, linear or branched aliphatic radical having 1-7 chain members, NO2, NR7R8, CN, CONR7R8, COOR9, CHO, halogen, SO2NR7R8, SR9, OR9, OCF3, mono-, di or trifluoromethyl, benzyl or phenyl.

An antimycobacterial combination and composition for treating tuberculosis are described. The compounds used are N-(3-[[4-(3-trifluoromethylphenyl)piperazinyl]methyl]-2-methyl-5-phenyl-pyrrolyl)-4-pyridylcarboxamide of formula (I) or a pharmaceutically acceptable non-toxic salt thereof and an amount of one or more first line antitubercular drugs.

The invention relates to the field of pharmacy, in particular to application of antimicrobial peptides in anti-mycobacteria infection drugs. According to the application, starting with antimicrobial peptides, a series of antimicrobial peptides aiming at mycobacteria with special structures and unusual action modes are researched and developed, the antimicrobial peptides kill bacteria through a membrane destruction mechanism, and the bacteria do not generate drug resistance. The antimicrobial peptides, as main potential medicament for treating tuberculosis, fill the gap of no new anti-tuberculosis drugs in China for a long time. Therefore, the antimicrobial peptides provided by the application can be used for preparing effective drugs aiming at the mycobacteria, are expected to be the anti-mycobacteria infection potential drugs, and are the main potential medicament for treating the tuberculosis.

The invention provides pyrimidine compounds. The pyrimidine compounds have a chemical structure as shown in a formula I, wherein definitions of X, Y, R1, R2 and R3 are shown in the description and claim. At the same time, the invention also provides application of the compounds in mycobacterium resistance. The compounds have good activity of mycobacterium tuberculosis resistance, and can be applied to preparation of tuberculosis resistant drugs.

The present invention relates to novel nargenicin related compounds which can inhibit DnaE and have antibacterial, particularly antimycobacterial activity against Mycobacterium tuberculosis. The present invention also relates to method for inhibiting growth of mycobacterial cells as well as a method of treating mycobacterial infections by Mycobacterium tuberculosis by administering an antimycobacterially effective amount of nargenicin or a nargenicin-related compound and / or their pharmaceutically acceptable salts.

The embodiment of the invention provides application of octenidine in inhibiting acetyltransferase and resisting mycobacterium infection. The structure formula of the octenidine is as shown. Experiments show that the octenidine can well inhibit acetyltransferase and has a remarkable inhibition effect on mycobacterium tuberculosis and clinical mycobacterium tuberculosis wide drug-resistant strains499 and 421.

Novel pyrrole derivatives of formula (I) and their pharmaceutically acceptable acid addition salts having superior antimycobacterial activity against clinically sensitive as well as resistant strains of Mycobacterium tuberculosis as well as having lesser toxicity compared to known compounds. The use of the novel compounds of formula (I) for treatment of latent tuberculosis including Multi Drug Resistant Tuberculosis (MDR TB). The methods for preparation of the novel compounds, pharmaceutical compositions containing the novel compounds and method of treating MDR TB by administration of compounds of formula (I).

The invention relates to a recombinant mycobacterium smegmatis strain with a knockout c-di-AMP clastic enzyme. Upstream and downstream homologous arms of a mycobacterium smegmatis c-di-AMP degrading enzyme gene MSMEG-2630 are connected to a pMSG360 carrier separately; recombinant plasmids are transformed into a mycobacterium smegmatis competent cell containing recombinase gp60 and gp61pJV53 plasmid, and the recombinant mycobacterium smegmatis strain (rMS-deltaCnpB) with the knockout c-di-AMP clastic enzyme is screened and obtained, wherein the preservation number is CCTCC M 2016336. Mice are immunized by the strain rMS-deltaCnpB, mice humoral and cell immune responses, especially a mycobacterium tuberculosis-infected Th1 cell immune response can be adjusted, and the protective ability of the organism resistant to mycobacterium infection is improved, so that the recombinant mycobacterium smegmatis strain can be applied to development of vaccines and preparations for preventing and / or treating tuberculosis and has a relatively good application prospect.

A method for the identification of an anti-mycobacterial agent that modulates the activity and / or expression of a protein expressed by a Mycobacterium in non-oxygen limiting stationary phase, hypoxic stationary phase or hypoxic growth phase, which method comprises: (i) contacting a test agent and a protein selected from RV3133c, Rv2623, Rv2626c, a variant of Rv3133c, Rv2623 or Rv2626 and a fragment of Rv3133c, RV2623, Rv2626c or said variant, or a polynucleotide or expression vector encoding said protein; (ii) monitoring the effect of the test agent on the activity and / or expression of said protein, thereby determining whether the test agent modulates the activity and / or expression of a protein expressed by a Mycobacterium in non-oxygen limiting stationary phase, hypoxic stationary phase or hypoxic growth phase.

The invention provides an application of zinc bacitracin in resisting mycobacterium infection. A compound can reduce the activity of mycobacterium tuberculosis glycogen branching enzyme, and has a strong inhibition effect on mycobacterium tuberculosis Ra strain at a bacterial level. Therefore, the compound provided by the invention is expected to become an effective inhibitor of mycobacteria.

Disclosed is a method of detecting the presence of antibodies against mycobacterial material in a sample by detecting binding of antibodies in said sample to at least two types of immobilised antigen, which antigens are capable of binding to an antibody which is indicative for the presence of mycobacterial material in a human or animal. Also disclosed is a solid substrate including a combination of said at least two antigens immobilised to said substrate, and to a biosensor having at least two types of immobilised antigen, which antigens are capable of binding to an antibody which is indicative for the presence of mycobacterial material in a human or animal.

The present invention relates to novel nargenicin related compounds which can inhibit DnaE and have antibacterial, particularly antimycobacterial activity against Mycobacterium tuberculosis. The present invention also relates to method for inhibiting growth of mycobacterial cells as well as a method of treating mycobacterial infections by Mycobacterium tuberculosis by administering an antimycobacterially effective amount of nargenicin or a nargenicin-related compound and / or their pharmaceutically acceptable salts.

The present invention provides novel heterocylic amide compounds having useful antimycobacterial activity. Use of these compounds as pharmaceutical compositions and method of their production are also provided.

Disclosed herein is 10-α / β-D-Arabinofuranosylundecenes of general Formula (II) or pharmaceutically acceptableN salts thereof as anti-mycobacterial agents in vitro; (II) wherein R, R1 and R″ are as defined herein in the specification. The present invention also discloses a simple stereoselective synthesis 10-α / β-D-Arabinofuranosylundecenes of Formula (II) to target enzymes involved in the biosynthesis of cell wall of Mycobacterium and thus useful as inhibitors in the Mycobacterium tuberculosis drug development.