Chemical conjugates for targeted degradation under reducing conditions
    7.
    发明授权
    Chemical conjugates for targeted degradation under reducing conditions 有权
    用于还原条件下目标降解的化学共轭物

    公开(公告)号:US09044515B2

    公开(公告)日:2015-06-02

    申请号:US13605297

    申请日:2012-09-06

    IPC分类号: A61K47/48

    摘要: The present invention is related to compositions which can undergo targeted degradation under certain physiological reducing conditions. The compositions may, for example, be hydrogels in which maleimide-functionalized low molecular weight heparin is cross-linked with various thiol-functionalized polyethylene glycol multi-arm star polymers. Both the gelation and degradation of the hydrogels can be modified by careful selection of the thiol. For example, hydrogels prepared from aryl thiol-maleimide adducts can undergo a retro Michael addition-type reaction, leading to degradation of the composition and release of the bioactive molecule.

    摘要翻译: 本发明涉及可在某些生理降解条件下经历目标降解的组合物。 组合物可以是例如水凝胶,其中马来酰亚胺官能化的低分子量肝素与各种硫醇官能化的聚乙二醇多臂星形聚合物交联。 可以通过仔细选择硫醇来改变水凝胶的凝胶化和降解。 例如,由芳基硫醇 - 马来酰亚胺加合物制备的水凝胶可以进行复合迈克尔加成型反应,导致组合物的降解和生物活性分子的释放。

    AFFINITY HYDROGELS FOR CONTROLLED PROTEIN RELEASE
    10.
    发明申请
    AFFINITY HYDROGELS FOR CONTROLLED PROTEIN RELEASE 审中-公开
    受控蛋白质释放的亲水性

    公开(公告)号:US20130196915A1

    公开(公告)日:2013-08-01

    申请号:US13522837

    申请日:2011-01-21

    IPC分类号: A61K47/48

    摘要: The present invention relates to novel porous matrix composites and formulations for controlled protein delivery and the uses therefor. The present invention also provides methods of synthesizing such protein delivery systems. The composites comprise affinity sites embedded in the matrix where the affinity sites are functionalized with nucleic acid aptamers having high affinity for proteins to be released. The aptamers function as binding affinity sites for the proteins to be released. In certain embodiments, release rates are controlled by tuning the binding affinity of the nucleic acid aptamers to the proteins at a desired level. In yet other embodiments, complementary oligonucleotides that hybridize with the aptamers are employed to trigger accelerated release of the proteins when desired. Various in situ injectable hydro gels functionalized with aptamers are provided for treating a condition and disease in a subject in need of a therapeutic protein.

    摘要翻译: 本发明涉及用于受控蛋白质递送的新型多孔基质复合物和制剂及其用途。 本发明还提供了合成这种蛋白质递送系统的方法。 复合物包括嵌入基质中的亲和位点,其中亲和位点用对待释放的蛋白质具有高亲和力的核酸适配子官能化。 适体作为蛋白质释放的结合亲和位点起作用。 在某些实施方案中,释放速率通过调节核酸适体与蛋白质在所需水平的结合亲和力来控制。 在其它实施方案中,当需要时,与适体杂交的互补寡核苷酸被用来触发蛋白质的加速释放。 提供用适配体官能化的各种原位可注射的水凝胶用于治疗需要治疗性蛋白质的受试者中的病症和疾病。