University System of Maryland

The University of Texas System

Sanford-Burnham Medical Research Institute

The United States Government as Represented by the Department of Veterans Affairs

Alexander MacKerell

Steven Fletcher

Erik De Leeuw

Jamal Chauhan

Jun Hayashi

Hong Zhang

Andrei Osterman

Rohit Kolhatkar

Younus Mia

Guanjun Xia

Newly synthesized derivatives of BAS00127538 have been discovered to possess antibiotic activity and to combat resistant bacterial strains. Compounds and pharmaceutical compositions containing these compounds are described, and are based on a generic scaffold structure. Synthetic methods and methods of using the compounds also are described. Preferred compound 6jc48-1 ((E)-2,4-bis(4-bromophenyl)-6-(4-(dimethyl-amino)styryl)pyrylium boron tetrafluoride salt) binds to Lipid II with high affinity, has markedly reduced cytotoxicity than BAS00127538, and retains activity against drug-resistant strains of. It is stable in plasma, has dramatically improved pharmacokinetic and pharmacodynamics properties, and possesses in vivo efficacy in a mouse model of sepsis. 

Small molecule lipid II inhibitors

Newly synthesized derivatives of BAS00127538 have been discovered to possess antibiotic activity and to combat resistant bacterial strains. Compounds and pharmaceutical compositions containing these compounds are described, and are based on a genetic scaffold structure. Synthetic methods and methods of using the compounds also are described. Preferred compounds bind to Lipid II with high affinity, have markedly reduced cytotoxicity compared to BAS00127538, and retain activity against drug-resistant strains of Enterococci. They are stable in plasma, have dramatically improved pharmacokinetic and pharmacodynamics properties, and possess in vivo efficacy in a mouse model of sepsis. 

The emergence of multidrug-resistant pathogens necessitates the search for new antibiotics acting on previously unexplored targets. Nicotinate mononucleotide adenylyltransferase of the NadD family, an essential enzyme of NAD biosynthesis in most bacteria, was selected as a target for structure-based inhibitor development. To this end, the inventors have identified small molecule compounds that inhibit bacterial target enzymes by interacting with a novel inhibitory binding site on the enzyme while having no effect on functionally equivalent human enzymes.

Targeting NAD biosynthesis in bacterial pathogens

The present invention provides materials and methods for modulating an immune response. The materials and methods may be used to treat diseases associated with an aberrant immune response. In some embodiments, materials and methods of the invention may be used to treat autoimmune diseases, for example, rheumatoid arthritis.

Small molecule inhibitors of Lck SH2 domain binding

Compounds are described which modulate the tzrosine kinase activity of p56and signal transduction pathways in which this enzyme is involved. The invention also relates to compounds which have immunomodulatory activity, e.g., which have immunosuppressant or immunostimulatory activity, and/or which have an antineoplastic effect. The invention further relates to compositions comprising these compounds, and methods of using them. Compounds are described which modulate the tyrosine kinase activity of p56.

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Baltimore, MD, United States of America

Alexander MacKerell