Cell-modified bioprinted microspheres for vascular regeneration
Cell-modified bioprinted microspheres for vascular regeneration
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DOI：
10.1016/j.msec.2020.110896
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
Xiang Meixiang
中科院分区：
文献类型：
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作者：
Shen Jian;Ji Yongli;Xie Mingjun;Zhao Haiming;Xuan Wanling;Yin Li;Yu Xiaohua;Xu Fangfang;Su Shengan;Nie Jing;Xie Yao;Gao Qing;Ma Hong;Ke Xueying;Shi Zhenyu;Fu Jianzhong;Liu Zhenjie;He Yong;Xiang Meixiang
Cell therapy is a promising strategy in which living cells or cellular materials are delivered to treat a variety of diseases. Here, we developed an electrospray bioprinting method to rapidly generate cell-laden hydrogel microspheres, which limit the migration of the captured cells and provide an immunologically privileged micro-environment for cell survival in vivo. Currently, therapeutic angiogenesis aims to induce collateral vessel formation after limb ischemia. However, the clinical application of gene and cell therapy has been impeded by concerns regarding its inefficacy, as well as the associated risk of immunogenicity and oncogenicity. In this study, hydrogel microspheres encapsulating VEGF-overexpressing HEK293T cells showed good safety via subcutaneously injecting into male C57BL/6 mice. In addition, these cell-modified microspheres effectively promoted angiogenesis in a mouse hind-limb ischemia model. Therefore, we demonstrated the great therapeutic potential of this approach to induce angiogenesis in limb ischemia, indicating that bioprinting has a bright future in cell therapy.
