PROTEIN LABELLING
    5.
    发明申请

    公开(公告)号:US20210292736A1

    公开(公告)日:2021-09-23

    申请号:US17167366

    申请日:2021-02-04

    摘要: A process for labelling a target protein, such as a target enzyme, such as a deubiquitinating enzyme (DUB). The process comprises providing a probe-protein complex comprising a probe and the target protein. The probe comprises a recognition element and a warhead. The target protein comprises a cysteine residue and a recognition site. The recognition element is reversibly bound to the recognition site. A stimulus is applied to induce a radical reaction in the probe-protein complex to covalently bond the warhead to the cysteine residue, thereby labelling the target protein. This invention also resides in probes and probe-protein complexes for use in the process.

    AN ACELLULAR NERVE GRAFT
    8.
    发明申请

    公开(公告)号:US20230001052A1

    公开(公告)日:2023-01-05

    申请号:US17779783

    申请日:2020-11-27

    IPC分类号: A61L27/36

    摘要: A method of producing an acellular peripheral nerve graft comprises the steps of providing a section of peripheral nerve, primary treatment of the section of peripheral nerve comprising freezing and then thawing the section of peripheral nerve, freeze-drying the thawed section of peripheral nerve longitudinally to introduce longitudinal pores into the section of peripheral nerve, and decellularization of the section of peripheral nerve comprising contacting the freeze-dried section of peripheral nerve with detergent and enzymatic decellularization agents to provide the acellular peripheral nerve graft. 9. The acellular peripheral nerve graft typically has an average pore size of at least 40 μm and a DNA content of less than 100 ng/mg.

    System and methods for sealing a channel in tissue

    公开(公告)号:US11413023B2

    公开(公告)日:2022-08-16

    申请号:US16961224

    申请日:2019-01-10

    摘要: A system for performing a minimally invasive percutaneous procedure comprises a medical device comprising a hydrogel delivery needle (4) with a tip and a hydrogel outlet (6), an injectable, shear-thinning, self-healing viscoelastic hydrogel that exhibits a storage modulus (G′) of at least 600 Pa, and a tan δ (G″/G) from 0.1 to 0.6 in dynamic viscoelasticity measured by a rheometer at 1 Hz and 1% strain rate at 25° C. The system may also comprise a coaxial cannula (2) having a lumen configured for receipt of the hydrogel delivery needle (4), wherein the hydrogel delivery needle comprises an adjustable positioning mechanism (8) configured to limit the advancement depth of the hydrogel delivery needle through the coaxial cannula to a predetermined depth distal to a distal-most end of the coaxial cannula.