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Engineering a Tumor Microenvironment‐Mimetic Niche for Tissue Regeneration with Xenogeneic Cancer Cells
Advanced Science ( IF 14.3 ) Pub Date : 2018-01-02 , DOI: 10.1002/advs.201700666
Zhenzhen Wang 1 , Chunming Wang 2 , Ayipaxia Abudukeremu 1 , Xiaying Rui 1 , Shang Liu 1 , Xiaoyi Zhang 3 , Min Zhang 1 , Junfeng Zhang 1 , Lei Dong 1
Affiliation  

The insufficient number of cells suitable for transplantation is a long‐standing problem to cell‐based therapies aimed at tissue regeneration. Xenogeneic cancer cells (XCC) may be an alternative source of therapeutic cells, but their transplantation risks both immune rejection and unwanted spreading. In this study, a strategy to facilitate XCC transplantation is reported and their spreading in vivo is confined by constructing an engineering matrix that mimics the characteristics of tumor microenvironment. The data show that this matrix, a tumor homogenate‐containing hydrogel (THAG), successfully creates an immunosuppressive enclave after transplantation into immunocompetent mice. XCC of different species and tissue origins seeded into THAG survive well, integrated with the host and developed the intrinsic morphology of the native tissue, without being eliminated or spreading out of the enclave. Most strikingly, immortalized human hepatocyte cells and rat β‐cells loaded into THAG exert the physiological functions of the human liver and rat pancreas islets, respectively, in the mouse body. This study demonstrates a novel and feasible approach to harness the unique features of tumor development for tissue transplantation and regenerative medicine.

中文翻译:


设计用于异种癌细胞组织再生的肿瘤微环境模拟生态位



适合移植的细胞数量不足是旨在组织再生的细胞疗法的一个长期存在的问题。异种癌细胞(XCC)可能是治疗细胞的替代来源,但它们的移植存在免疫排斥和不必要的扩散的风险。在这项研究中,报告了一种促进 XCC 移植的策略,并通过构建模拟肿瘤微环境特征的工程矩阵来限制它们在体内的扩散。数据显示,这种基质是一种含有肿瘤匀浆的水凝胶(THAG),在移植到免疫功能正常的小鼠体内后,成功地产生了免疫抑制飞地。接种到 THAG 中的不同物种和组织来源的 XCC 能够很好地存活,与宿主融合并发展出天然组织的固有形态,而不会被消除或扩散到飞地之外。最引人注目的是,加载到 THAG 中的永生化人类肝细胞和大鼠 β 细胞在小鼠体内分别发挥了人类肝脏和大鼠胰岛的生理功能。这项研究展示了一种新颖且可行的方法,可以利用肿瘤发展的独特特征进行组织移植和再生医学。
更新日期:2018-01-02
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