Abstract: The present application is directed to methods of performing chemical reactions, including multi-step chemical reactions in which two or more of the reagents in the chemical reaction are incorporated or entrapped in a solid polymeric structure comprising pullulan. In certain embodiments, the chemical reaction or multi-step reaction serves as a sensor. Accordingly the present application is also directed to sensors for performing the methods of the application. In certain embodiments, at least one of the reagents is a biomolecule and the sensor is a biosensor. In certain other embodiments, the solid polymeric structure comprising pullulan and the reagents for performing a chemical reaction form a convenient device for performing a chemical reaction.

Abstract: A compound as a BTK inhibitor or an HER2 inhibitor, a preparation method therefor, and a use thereof. The compound comprises a structure as shown in formula II or a tautomer, a mesomer, a racemate, an enantiomer, a diastereomer, or a mixture form thereof, and a pharmaceutically acceptable hydrate, a solvate, or salt. The BTK protein kinase inhibitor of the present invention has strong inhibitory activity on wild-type BTK or mutated BTK (C481S), and some of the compounds have high brain permeability; the HER2 inhibitor of the present invention has good HER2 kinase inhibitory activity and high blood-brain barrier transmittance; and the compound of the present invention has good pharmacokinetic properties and a good application prospect.

Abstract: The present invention discloses a compound as a sodium channel regulator, and this type of compound can effectively inhibit and block the activity of Nav1.8 ion channel, a subtype of voltage-gated sodium channels, and can be used as a specific Nav1.8 inhibitor and to prepare drugs for the treatment of pain diseases mediated by Nav1.8 such as of intestinal pain, neuropathic pain, musculoskeletal pain, acute pain, inflammatory pain, cancer pain, primary pain, multiple sclerosis, Charcot-Marie-Tooth syndrome, incontinence, and cardiac arrhythmia, with broad application prospects.

Abstract: A compound serving as a BTK inhibitor, a preparation method therefor, and a use thereof. The compound has a structure represented by formula I, or a tautomer, a mesomer, a racemate, an enantiomer, a diastereomer or a mixture thereof, or a pharmaceutically acceptable hydrate, solvent, or salt thereof, wherein A1, A2, A3, A4, A5 and A6 are each independently selected from C—R5 and N, and at least one of those is N; and M is selected from substituted or unsubstituted saturated or heterosaturated hydrocarbyl, substituted or unsubstituted unsaturated cyclic group or heterocyclyl, and substituted or unsubstituted monocyclic, bicyclic, or tricyclic aryl or heteroaryl. The provided BTK protein kinase inhibitor has strong inhibition for wild BTK and mutated BTK (C481S), has good pharmacokinetic properties, and has good application prospects.

Abstract: This disclosure relates to catalytic nucleic acid probes, biosensors and lateral flow biosensor systems and methods and kits of using the probes, biosensors and lateral flow biosensor systems for detecting microorganisms such as Staphylococcus aureus.

Abstract: This disclosure relates to recognition moieties, biosensors, biosensor systems and kits thereof, and the methods for their use in detecting a target nucleic acid molecule in a test sample, including viral RNA and methods for determining whether a subject has a viral infection. The methods disclosed herein include detecting a viral infection in a subject comprising testing a sample from the subject for the presence of a target nucleic acid using a biosensor system, wherein presence of a target nucleic acid indicates that the subject has a viral infection.

Abstract: This disclosure relates to biosensors, and in particular, biosensors based on nucleic acid cleaving enzymes such as ribonucleotide-cleaving DNAzymes for the detection of analytes, and methods of use.

Abstract: Provided herein are nucleic acid-cleaving catalytic nucleic acid probes, biosensors and lateral flow biosensor devices and methods and kits of using the probes, biosensors and lateral flow biosensor devices for detecting an analyte present on or generated from a microorganism in a test sample, including Helicobacter pylori and methods for determining whether a subject has a Helicobacter pylori infection.

Abstract: The present application relates to a biosensor for detecting an analyte comprising a first and second working electrode; a detection probe functionalized on the first working electrode, the detection probe comprising a reporter moiety and a recognition moiety for an analyte; a capture probe functionalized on the second working electrode; and a counter electrode. Each working electrode is configured to provide a change in signal if the analyte is present. The biosensor can be used to detect an analyte in a sample.

Abstract: This disclosure relates to DNAzymes and biosensors for detecting pathogenic bacteria, and in particular, for detecting Legionella pneumophila. This disclosure also provides a method for detecting the presence of Legionella pneumophila in a test sample, comprising: a) contacting said test sample with the DNAzyme or biosensor described herein, wherein the DNAzyme comprises a detectable label; b) allowing cleavage of the DNAzyme if a target is present, thereby releasing the detectable label; and c) measuring a detectable signal if the portion of the DNAzyme comprising the detectable label is released, wherein the RNA cleavage activity of the DNAzyme is activated by a target from Legionella pneumophila.

Abstract: The present application is directed to methods of performing chemical reactions, including multi-step chemical reactions in which two or more of the reagents in the chemical reaction are incorporated or entrapped in a solid polymeric structure comprising pullulan. In certain embodiments, the chemical reaction or multi-step reaction serves as a sensor. Accordingly the present application is also directed to sensors for performing the methods of the application. In certain embodiments, at least one of the reagents is a biomolecule and the sensor is a biosensor. In certain other embodiments, the solid polymeric structure comprising pullulan and the reagents for performing a chemical reaction form a convenient device for performing a chemical reaction.

Abstract: This disclosure relates to biosensors, and in particular, biosensors based on nucleic acid cleaving enzymes such as ribonucleotide-cleaving DNAzymes for the detection of analytes, and methods of use.

Abstract: The present application is directed to methods of performing chemical reactions, including multi-step chemical reactions in which two or more of the reagents in the chemical reaction are incorporated or entrapped in a solid polymeric structure comprising pullulan. In certain embodiments, the chemical reaction or multi-step reaction serves as a sensor. Accordingly the present application is also directed to sensors for performing the methods of the application. In certain embodiments, at least one of the reagents is a biomolecule and the sensor is a biosensor. In certain other embodiments, the solid polymeric structure comprising pullulan and the reagents for performing a chemical reaction form a convenient device for performing a chemical reaction.

Abstract: The present application is directed to biosensors and methods for detecting a microorganism target in a sample using a mechanically interlocked nucleic acid catanane, wherein an enzyme from the microorganism target or that is activated by a molecule from the microorganism target cleaves a linkage in a first single-stranded nucleic acid ring of the catanane structure, allowing rolling-circle amplification to occur and the presence of rolling-circle amplification products indicates the presence of the microorganism in the sample.

Abstract: Provided herein are nucleic acid-cleaving catalytic nucleic acid probes, biosensors and lateral flow biosensor devices and methods and kits of using the probes, biosensors and lateral flow biosensor devices for detecting an analyte present on or generated from a microorganism in a test sample, including Helicobacter pylori and methods for determining whether a subject has a Helicobacter pylori infection.

Abstract: Provided herein are methods for selection of circular aptamers using a circular nucleic acid library. Also provided are circular aptamers, circular aptamer probes, biosensor systems, and the methods for their use in detecting a microorganism target, or a target molecule present on or generated from a microorganism or a virus in a test sample, including C. difficile glutamate dehydrogenase and methods for determining whether a subject has a C. difficile infection.

Abstract: Described is an approach that takes advantage of rolling circle amplification (RCA) and an RNA-cleaving DNAzyme (RCD) to achieve massive signal amplification for biosensing via a cross-feedback mechanism. An RCA reaction generates copies of an RCD that triggers a reaction cascade designed to generate additional DNA assemblies for RCA. These cross-feedback actions work autonomously to turn limited molecular recognition events into massive amounts of DNA amplicons that can be conveniently detected. This approach was demonstrated for biosensing of a microRNA sequence and a bacterium.

Abstract: The present invention provides a compound having a structure shown in formula (I) or an isomer, pharmaceutically acceptable solvate, or salt thereof. The compound is used as a Bruton's tyrosine kinase inhibitor, and has a higher inhibitory activity against BTK and less adverse effects.

Abstract: The present invention provides a hydrobromide of methyl 3-[(4s)-8-bromo-1-methyl-6-(2-pyridyl)-4H-imidazol[1,2-a][1,4]benzodiazepine-4-yl] propionate and its related crystal forms, preparation method and use thereof. The hydrobromide has excellent solubility (>100 mg/ml), which is significantly superior to other currently commercially available or developed salt products, and is especially suitable for the preparation of injections, has relatively good stability in various crystal forms, and has good practical value and market prospects.

Abstract: Provided herein are aptamers, aptamer probes and biosensor systems that detect C. difficile glutamate dehydrogenase (GDH). Also provided are methods of detecting C. difficile GDH using the aptamers, probes and biosensors and methods of determining whether a subject has a C. difficile infection.