Abstract:
The invention relates to the synthesis of a second-generation camptothecin glucuronide prodrug (BQC-G) of a potent anticancer camptothecin derivative 5,6-dihydro-4H-benzo[de]quinoline-camptothecin (BQC). BQC-G was over 4000 times more water soluble than BQC, displayed good stability in human plasma and was an excellent substrate for enzymatic hydrolysis by bacterial and human β-glucuronidases. BQC-G was about 30 times less toxic than BQC, but was as toxic as BQC after hydrolysis of the glucuronide moiety by β-glucuronidase. In the presence of human serum albumin, BQC-G displayed lower cytotoxicity (IC50=1080 nM) but could be activated by β-glucuronidase to display potent activity (IC50=13.3 nM).
Abstract:
A periodic field differential mobility analyzer apparatus for separating and identifying ionic analytes employs a series of elongated parallel channels, a pump, a first voltage providing an electric field Ex in a direction opposing the gas flow, a second voltage providing an electric field Ey in a direction perpendicular to the gas flow, an ion source, and a detector. The periodic field differential mobility analyzer provides high resolution and sensitivity.
Abstract:
Methods for diagnosis of non-small cell lung cancers by detection of endogenous peptides in exhaled breath condensate (EBC) are provided. Diagnostic peptides derived from dermcidin (DC) are provided. A specific dermcidin-derived peptide E-R11, having the sequence ENAGEDPGLAR (SEQ ID NO:2), is provided. E-R11 peptide levels in EBC, as measured by mass spectrometry (MS), are highly diagnostic of non-small cell lung cancers. A method for inhibiting growth of lung cancer cells by inhibiting DCD expression by RNA interference also is provided.
Abstract translation:提供了通过检测呼出气体浓缩物(EBC)中的内源肽来诊断非小细胞肺癌的方法。 提供衍生自皮肤霉素(DC)的诊断肽。 提供具有序列ENAGEDPGLAR(SEQ ID NO:2)的具体的皮肤霉素衍生肽E-R11。 通过质谱(MS)测量,EBC中的E-R11肽水平是非小细胞肺癌的高度诊断。 还提供了通过RNA干扰抑制DCD表达来抑制肺癌细胞生长的方法。
Abstract:
The crystal structure at 2.16 Å resolution of the full-length bacterial bifunctional transglycosylase penicillin-binding protein 1b (PBP1b) from Escherichia coli, in complex with its inhibitor moenomycin, is provided. The atomic coordinates of the complex as well as the moenomycin binding site are provided. Three dimensional structures of amino acid residues involved in moenomycin binding and transglycosylation activity are identified. Binding site for peptidoglycan synthesis inhibitors comprising inhibitor-binding site comprises amino acid residues from at least one of transglycosylase (TG), UvrB domain 2 homolog (UB2H) and transmembrane (TM) domains of PBP1b are identified at an atomic level of resolution. Methods for rational drug design based on the atomic coordinates are provided. Methods for screening for antibiotics based on anisotropic binding assay and transglycosylase inhibitor assays are provided. Novel antibiotics based on the screening assays of the invention are disclosed.
Abstract:
Methods and compositions for treating retinal diseases comprising therapeutic amounts of a compound selected from a normal Puf-A gene product, an active polypeptide fragment thereof, an analog thereof or a peptidomimetic thereof. Vectors, including AAV vectors comprising the therapeutic compound are provided. Puf-A compositions suitable for subretinal, intravitreal, topical, subconjunctival, retrobulbar, periocular, suprachoroidal, or intraocular administration are provided. Methods for screening siRNA, RNAi and shRNA, small molecules and monoclonal antibodies that inhibit Puf-A target activity and reduce apoptosis are provided.
Abstract:
An organic luminescent material includes a host luminescent material and a guest luminescent material. The host luminescent material includes a compound represented by formula (1), where n is 0˜8; R2 and R3 respectively represent H, CF3, CN, CH3 or C5H11; R1 is CH3 or one of substituents shown as follows:
Abstract:
Provided herein are monoclonal antibodies with a high binding affinity to isoforms of alpha 1-antitrypsin (A1AT), hybridoma cells producing the same, and their uses in diagnosing and/or detecting endometriosis from a serum sample of a subject suspicious of having endometriosis or a subject under health examination.
Abstract:
The present invention is related to a process for reducing surface energy of a hole transport layer. The disclosed process comprises providing a hole transport layer; and providing a fluorine-containing layer directly on said hole transport layer. The configuration of said fluorine-containing layer reduces the structural disorder of an active layer and is able to recover a moisture-degraded hole transport layer, and thereby improves the performance of an electric device containing the same.
Abstract:
Moenomycin inhibits bacterial growth by clocking the transglycosylase activity of class A penicillin-binding proteins (PBPs), which are key enzymes in bacterial cell wall synthesis. The binding affinities of moenomycin A with various truncated PBPs were compared showing that the transmembrane domain is important for moenomycin binding. Full-length class-A PBPs from 16 bacterial species were produced, and their binding activities showed a correlation with the antimicrobial activity of moenomycin against Enterococcus faecalis and Staphylococcus aureus. Moreover, a fluorescence anisotropy-based high-throughput assay was developed and used successfully for identification of transglycosylase inhibitors.
Abstract:
Disclosed herein is a method for treating an androgen-stimulated disease in a subject in need thereof by administering to the subject a composition containing an effective amount of an inhibitor of IκB kinase subunit α activity. The composition can also be administered to a subject at high risk for prostate cancer as a method for reducing the subject's risk thereof. A further method relates to identifying a modulator of transcriptional activity regulated by IκB kinase subunit α. Still another method relates to determining the IκB kinase subunit α-regulated transcriptional activity regulated by in a non-human mammalian test subject.