Antifolate activity of epigallocatechin gallate against Stenotrophomonas maltophilia. 2005

María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
Grupo de Investigación de Enzimología, Departamento de Bioquímica y Biología Molecular A, Facultad de Biología, Universidad de Murcia, E-30100 Espinardo, Murcia, Spain.

The catechin epigallocatechin gallate, one of the main constituents of green tea, showed strong antibiotic activity against 18 isolates of Stenotrophomonas maltophilia (MIC range, 4 to 256 microg/ml). In elucidating its mechanism of action, we have shown that epigallocatechin gallate is an efficient inhibitor of S. maltophilia dihydrofolate reductase, a strategic enzyme that is considered an attractive target for the development of antibacterial agents. The inhibition of S. maltophilia dihydrofolate reductase by this tea compound was studied and compared with the mechanism of a nonclassical antifolate compound, trimethoprim. Investigation of dihydrofolate reductase was undertaken with both a trimethoprim-susceptible S. maltophilia isolate and an isolate with a high level of resistance. The enzymes were purified using ammonium sulfate precipitation, gel filtration, and methotrexate affinity chromatography. The two isolates showed similar levels of dihydrofolate reductase expression and similar substrate kinetics. However, the dihydrofolate reductase from the trimethoprim-resistant isolate demonstrated decreased susceptibility to inhibition by trimethoprim and epigallocatechin gallate. As with other antifolates, the action of epigallocatechin gallate was synergistic with that of sulfamethoxazole, a drug that blocks folic acid metabolism in bacteria, and the inhibition of bacterial growth was attenuated by including leucovorin in the growth medium. We conclude that the mechanism of action of epigallocatechin gallate on S. maltophilia is related to its antifolate activity.

UI MeSH Term Description Entries
D007700 Kinetics The rate dynamics in chemical or physical systems.
D008727 Methotrexate An antineoplastic antimetabolite with immunosuppressant properties. It is an inhibitor of TETRAHYDROFOLATE DEHYDROGENASE and prevents the formation of tetrahydrofolate, necessary for synthesis of thymidylate, an essential component of DNA. Amethopterin,Methotrexate Hydrate,Methotrexate Sodium,Methotrexate, (D)-Isomer,Methotrexate, (DL)-Isomer,Methotrexate, Dicesium Salt,Methotrexate, Disodium Salt,Methotrexate, Sodium Salt,Mexate,Dicesium Salt Methotrexate,Hydrate, Methotrexate,Sodium, Methotrexate
D008826 Microbial Sensitivity Tests Any tests that demonstrate the relative efficacy of different chemotherapeutic agents against specific microorganisms (i.e., bacteria, fungi, viruses). Bacterial Sensitivity Tests,Drug Sensitivity Assay, Microbial,Minimum Inhibitory Concentration,Antibacterial Susceptibility Breakpoint Determination,Antibiogram,Antimicrobial Susceptibility Breakpoint Determination,Bacterial Sensitivity Test,Breakpoint Determination, Antibacterial Susceptibility,Breakpoint Determination, Antimicrobial Susceptibility,Fungal Drug Sensitivity Tests,Fungus Drug Sensitivity Tests,Sensitivity Test, Bacterial,Sensitivity Tests, Bacterial,Test, Bacterial Sensitivity,Tests, Bacterial Sensitivity,Viral Drug Sensitivity Tests,Virus Drug Sensitivity Tests,Antibiograms,Concentration, Minimum Inhibitory,Concentrations, Minimum Inhibitory,Inhibitory Concentration, Minimum,Inhibitory Concentrations, Minimum,Microbial Sensitivity Test,Minimum Inhibitory Concentrations,Sensitivity Test, Microbial,Sensitivity Tests, Microbial,Test, Microbial Sensitivity,Tests, Microbial Sensitivity
D002392 Catechin An antioxidant flavonoid, occurring especially in woody plants as both (+)-catechin and (-)-epicatechin (cis) forms. Catechinic Acid,Catechuic Acid,(+)-Catechin,(+)-Cyanidanol,(+)-Cyanidanol-3,(-)-Epicatechin,(2R,3R)-2-(3,4-Dihydroxyphenyl)-3,5,7-chromanetriol,2H-1-Benzopyran-3,5,7-triol, 2-(3,4-dihydroxyphenyl)-3,4-dihydro-, (2R-cis)-,3,3',4',5,7-Flavanpentol,Catergen,Cianidanol,Cyanidanol-3,Epicatechin,KB-53,Z 7300,Zyma,Cyanidanol 3,KB 53,KB53
D005493 Folic Acid Antagonists Inhibitors of the enzyme, dihydrofolate reductase (TETRAHYDROFOLATE DEHYDROGENASE), which converts dihydrofolate (FH2) to tetrahydrofolate (FH4). They are frequently used in cancer chemotherapy. (From AMA, Drug Evaluations Annual, 1994, p2033) Antifolate,Antifolates,Dihydrofolate Reductase Inhibitor,Folic Acid Antagonist,Dihydrofolate Reductase Inhibitors,Folic Acid Metabolism Inhibitors,Acid Antagonist, Folic,Acid Antagonists, Folic,Antagonist, Folic Acid,Antagonists, Folic Acid,Inhibitor, Dihydrofolate Reductase,Inhibitors, Dihydrofolate Reductase,Reductase Inhibitor, Dihydrofolate,Reductase Inhibitors, Dihydrofolate
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000900 Anti-Bacterial Agents Substances that inhibit the growth or reproduction of BACTERIA. Anti-Bacterial Agent,Anti-Bacterial Compound,Anti-Mycobacterial Agent,Antibacterial Agent,Antibiotics,Antimycobacterial Agent,Bacteriocidal Agent,Bacteriocide,Anti-Bacterial Compounds,Anti-Mycobacterial Agents,Antibacterial Agents,Antibiotic,Antimycobacterial Agents,Bacteriocidal Agents,Bacteriocides,Agent, Anti-Bacterial,Agent, Anti-Mycobacterial,Agent, Antibacterial,Agent, Antimycobacterial,Agent, Bacteriocidal,Agents, Anti-Bacterial,Agents, Anti-Mycobacterial,Agents, Antibacterial,Agents, Antimycobacterial,Agents, Bacteriocidal,Anti Bacterial Agent,Anti Bacterial Agents,Anti Bacterial Compound,Anti Bacterial Compounds,Anti Mycobacterial Agent,Anti Mycobacterial Agents,Compound, Anti-Bacterial,Compounds, Anti-Bacterial
D013762 Tetrahydrofolate Dehydrogenase An enzyme of the oxidoreductase class that catalyzes the reaction 7,8-dihyrofolate and NADPH to yield 5,6,7,8-tetrahydrofolate and NADPH+, producing reduced folate for amino acid metabolism, purine ring synthesis, and the formation of deoxythymidine monophosphate. Methotrexate and other folic acid antagonists used as chemotherapeutic drugs act by inhibiting this enzyme. (Dorland, 27th ed) EC 1.5.1.3. Dihydrofolate Dehydrogenase,Dihydrofolate Reductase,Folic Acid Reductase,Acid Reductase, Folic,Dehydrogenase, Dihydrofolate,Dehydrogenase, Tetrahydrofolate,Reductase, Dihydrofolate,Reductase, Folic Acid
D014295 Trimethoprim A pyrimidine inhibitor of dihydrofolate reductase, it is an antibacterial related to PYRIMETHAMINE. It is potentiated by SULFONAMIDES and the TRIMETHOPRIM, SULFAMETHOXAZOLE DRUG COMBINATION is the form most often used. It is sometimes used alone as an antimalarial. TRIMETHOPRIM RESISTANCE has been reported. Proloprim,Trimpex
D014296 Trimethoprim Resistance Nonsusceptibility of bacteria to the action of TRIMETHOPRIM.

Related Publications

María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
August 2010, International journal of antimicrobial agents,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
January 2014, PloS one,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
December 2014, Journal of global antimicrobial resistance,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
December 1999, European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
August 2000, The Journal of antimicrobial chemotherapy,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
January 2022, Frontiers in microbiology,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
September 1999, Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
April 2005, Epidemiologie, mikrobiologie, imunologie : casopis Spolecnosti pro epidemiologii a mikrobiologii Ceske lekarske spolecnosti J.E. Purkyne,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
January 2016, Journal of immunology research,
María Dolores Navarro-Martínez, and Enma Navarro-Perán, and Juan Cabezas-Herrera, and Joaquín Ruiz-Gómez, and Francisco García-Cánovas, and José Neptuno Rodríguez-López
March 2023, International journal of environmental research and public health,
Copied contents to your clipboard!