DIGITAL NUCLEASE DETECTION COMPOSITIONS AND METHODS

    公开(公告)号:US20200255883A1

    公开(公告)日:2020-08-13

    申请号:US16651863

    申请日:2018-09-27

    Abstract: In certain embodiments, the present invention provides a detection composition comprising a picodroplet comprising (a) an aqueous solution, and (b) a substrate probe comprising (i) an oligonucleotide of 2 to 75 nucleotides in length, (ii) a fluorophore operably linked to the oligonucleotide, and (iii) a quencher operably linked to the oligonucleotide. As used herein, the term “picodroplet” comprises a liquid droplet that has a volume of 0.014 to 2.6 picoliters. In certain embodiments, the present invention provides a method of detecting at least one individual nuclease molecule present in a sample, comprising contacting an aqueous sample suspected of containing at least one nuclease with at least one detection composition comprising a picodroplet comprising (a) an aqueous solution, and (b) a substrate probe comprising (i) an oligonucleotide of 2 to 75 nucleotides in length, (ii) a fluorophore operably linked to the oligonucleotide, and (iii) a quencher operably linked to the oligonucleotide to form an aqueous reaction mixture; emulsifying the aqueous mixture in oil to form picoliter-scale droplets in an emulsion, (c) incubating the picoliter-scale droplets in the emulsion in order for the nuclease, if present, to digest the substrate probes linked to the microbeads; recovering the microbeads; and detecting fluorescence emitting from the microbeads.

    METHODS AND COMPOSITIONS FOR TREATING BRAIN DISEASES

    公开(公告)号:US20200009267A1

    公开(公告)日:2020-01-09

    申请号:US16457332

    申请日:2019-06-28

    Abstract: The present disclosure provides methods of treating a disease or delivering a therapeutic agent to a mammal comprising administering to the mammal's cisterna magna and/or ventricle an rAAV particle containing a vector comprising a nucleic acid encoding a therapeutic protein inserted between a pair of AAV inverted terminal repeats in a manner such that cells with access to the cerebrospinal fluid (CSF) express the therapeutic agent and in certain embodiments secretes the therapeutic agent into the CSF for distribution to the brain.

    Percutaneous transverse connector system

    公开(公告)号:US10426528B2

    公开(公告)日:2019-10-01

    申请号:US15141745

    申请日:2016-04-28

    Abstract: A system and method for stabilizing a spine of an animal subject involving a transverse rod installation instrument assembly for inserting a transverse rod on the spine of a subject percutaneously comprising: a first rod clamp extender mounted on a ipsilateral rod clamp and a second rod clamp extender mounted on a contralateral rod clamp wherein the ipsilateral rod clamp and the contralateral rod clamp are secured to a vertebra at the ipsilateral and contralateral pedicle; and a pivoting installation instrument pivotably mounted to the first rod clamp extender and the second rod clamp extender to pass a transverse rod percutaneously through a head portion of the ipsilateral side rod clamp and to the head portion of the contralateral rod clamp after passing through a spinous process of the vertebra through pivot axis “A” such that the transverse rod is secured at the head portion of the ipsilateral rod clamp and the head portion of the contralateral rod clamp.

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