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    • 9. 发明授权
    • Microencapsulation of cells
    • 细胞的微胶囊化
    • US5762959A
    • 1998-06-09
    • US343594
    • 1994-11-29
    • Patrick Soon-ShiongRoswitha E. HeintzGudmund Skjak-Braek
    • Patrick Soon-ShiongRoswitha E. HeintzGudmund Skjak-Braek
    • A61K9/16A61K9/50A61K35/39B01J13/02C12N11/04A61K9/48G01M3/02
    • A61K9/1652A61K35/39A61K9/5073B01J13/02C12N11/04
    • In accordance with the present invention, it has been discovered that a major reason for the failure to achieve successful in vivo transplantation in large mammalian species has been flaws associated with the design of microcapsules taught in the prior art, flaws in the method of making such microcapsules, and a lack of tests to determine if a given microcapsule will be successful. In accordance with the present invention, a number of functional properties which must be met by a microcapsule in order to achieve successful in vivo transplantation in large animal models have been identified. These properties include (i) a mechanically stable capsule core, (ii) a mechanically strong capsule membrane (i.e., the membrane must be of sufficient strength to prevent capsule disruption), (iii) the absence of excess exposed positively-charged PLL (which leads to fibrosis), and (iv) an adequate level of diffusion of the entrapped biologically active material out of the capsule.
    • PCT No.PCT / US93 / 05122 Sec。 371日期1994年12月23日第 102(e)日期1994年12月23日PCT提交1993年5月28日PCT公布。 公开号WO93 / 24112 PCT 日期1993年12月9日根据本发明,已经发现,在大型哺乳动物物种中未能实现成功的体内移植的主要原因是与现有技术教导的微胶囊的设计相关的缺陷, 制备这种微胶囊的方法,以及缺乏确定给定微胶囊是否成功的试验。 根据本发明,已经确定了为了在大型动物模型中实现成功的体内移植而必须由微胶囊满足的许多功能特性。 这些性质包括(i)机械稳定的胶囊核心,(ii)机械强力的胶囊膜(即膜必须具有足够的强度以防止胶囊破裂),(iii)不存在过量暴露的带正电荷的PLL 导致纤维化),和(iv)被捕获的生物活性物质从胶囊中的适当水平的扩散。