Protease inhibitor: protease sensitivity expression system and method improving the therapeutic activity and specificity of proteins and phage and phagemids delivered by bacteria
    10.
    发明授权
    Protease inhibitor: protease sensitivity expression system and method improving the therapeutic activity and specificity of proteins and phage and phagemids delivered by bacteria 有权
    蛋白酶抑制剂:蛋白酶敏感性表达系统和提高细菌递送的蛋白质和噬菌体和噬菌体的治疗活性和特异性的方法

    公开(公告)号:US08623350B1

    公开(公告)日:2014-01-07

    申请号:US13562488

    申请日:2012-07-31

    IPC分类号: A01N63/00 A61K48/00

    摘要: The present invention uses co-expression of protease inhibitors and protease sensitive therapeutic agents that results in their localized production within the target tissue and inactivation outside of the target tissue, thereby increasing therapeutic activity and reducing the systemic toxicity. Inactivation is also accomplished by engineering protease degradation sites within the therapeutic construct for proteases, preferably those that are under-expressed within the target tissue yet present in non-target tissues within the body, resulting in therapeutic activity within the target tissue and inactivation outside of the target tissue. Novel chimeric proteins secreted by bacteria are also described. The chimeric proteins include chimeric toxins targeted to neoplastic cells and cells of the immune system. Novel combination therapies of these protease inhibitor:chimeric toxin-expressing bacteria together with small-molecule and biologic agents are also described. Non-conjugative bacteria capable of delivering phage/phagemids expression cassettes for DNA and RNA-based therapeutics are also described.

    摘要翻译: 本发明使用蛋白酶抑制剂和蛋白酶敏感性治疗剂的共表达,其导致其在靶组织内的局部生产和靶组织外的失活,从而增加治疗活性并降低全身毒性。 失活还可以通过在蛋白酶治疗构建体内工程化蛋白酶降解位点来实现,优选在目标组织内尚未存在于靶组织内的非靶组织中的蛋白酶降解位点,导致靶组织内的治疗活性, 目标组织。 还描述了细菌分泌的新型嵌合蛋白。 嵌合蛋白包括靶向肿瘤细胞的嵌合毒素和免疫系统的细胞。 还描述了这些蛋白酶抑制剂的新型组合疗法:表达嵌合毒素的细菌以及小分子和生物制剂。 还描述了能够递送用于DNA和RNA的治疗剂的噬菌体/噬菌粒表达盒的非共轭细菌。