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    • 3. 发明申请
    • VASCULARIZED PERFUSED MICROTISSUE/MICRO-ORGAN ARRAYS
    • 加压渗透微量/微生物阵列
    • WO9947922A3
    • 1999-11-04
    • PCT/US9905974
    • 1999-03-18
    • MASSACHUSETTS INST TECHNOLOGY
    • GRIFFITH LINDA GTANNENBAUM STEVEN RPOWERS MARK JDOMANSKY KARELTHOMPSON CHARLES D
    • B01J19/00C12M1/34C12M3/04C40B60/14G01N33/50
    • G01N33/5038B01J19/0046B01J2219/00286B01J2219/00308B01J2219/00313B01J2219/00317B01J2219/00319B01J2219/00351B01J2219/00376B01J2219/00416B01J2219/00585B01J2219/00659B01J2219/0072B33Y10/00B33Y80/00B82Y30/00C12M21/08C12M23/12C12M41/46C40B60/14G01N33/5008G01N33/502G01N33/5058G01N33/5064G01N33/5073
    • Systems including (1) a micromatrix and perfusion assembly suitable for seeding and attachment of cells within the matrix and for morphogenesis of seeded cells into complex, hierarchical tissue or organ structures, wherein the matrix includes channels or vessels through which culture medium, oxygen, or other nutrient or body fluids can be perfused while controlling gradients of nutrients and exogenous metabolites throughout the perfusion path independently of perfusion rate, and (2) sensor means for detecting changes in either cells within the matrix or in materials exposed to the cells, have been developed. Methods for making the micromatrices include micromachining, micromolding, embossing, laser drilling, and electro deposition machining. Cells can be of one or more types, either differentiated or undifferentiated. In a preferred embodiment, the matrix is seeded with a mixture of cells including endothelial cells which will line the channels to form "blood vessels", and at least one type of parenchymal cells, such as hepatocytes, pancreatic cells, or other organ cells. The system can be used to screen materials for an effect on the cells, for an effect of the cells on the materials (for example, in a manner equivalent to tissue metabolism of a drug), or to test a material on a biological that must first infect cells or tissues, such as viruses. The apparatus also can be used to provide a physiological environment for expansion of stem cells, or for enabling gene therapy in vitro.
    • 系统包括(1)微阵列和灌注组件,适合于将基质内的细胞接种和附着以及将接种细胞形态发生成复杂的分层组织或器官结构,其中基质包括培养基,氧或 其他营养物质或体液可灌注,同时独立于灌注速率而在整个灌注路径中控制营养素和外源性代谢物的梯度,和(2)用于检测基质内或暴露于细胞的物质中细胞变化的传感器装置 发达。 制造微基体的方法包括微加工,微成型,压花,激光钻孔和电沉积加工。 细胞可以是一种或多种类型,分化的或未分化的。 在一个优选的实施方案中,将基质与细胞混合物接种,所述细胞混合物包括将使通道形成“血管”的内皮细胞,以及至少一种实质细胞,例如肝细胞,胰腺细胞或其他器官细胞。 该系统可用于筛选材料对细胞的影响,细胞对材料的影响(例如,以等同于药物组织代谢的方式),或测试生物体上的材料 首先感染细胞或组织,如病毒。 该设备也可用于提供干细胞扩增的生理环境,或用于体外基因治疗。