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Production of pancreatic progenitor cells from human induced pluripotent stem cells using a three‐dimensional suspension bioreactor system

机译:使用三维悬浮生物反应器系统生产来自人诱导多能干细胞的胰腺祖细胞

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Abstract Islet replacement is a promising strategy for the treatment of patients with type 1 diabetes and patients who have undergone total pancreatectomy. Recent progress in cellular reprogramming technology may allow the transplantation of a patient's own pancreatic cells. Although many studies have reported the differentiation of pancreatic progenitor cells from mouse and human pluripotent stem cells (PSCs), obtaining sufficient cell numbers for clinical applications remains problematic. Here, we describe the mass production of human pancreatic progenitor cells from human induced (i)PSCs using a three‐dimensional suspension bioreactor system. Bioreactor culture of cells with stage‐specific provision of growth factors and small compounds for 17?days produced approximately 1.6??×??10 8 ?cells/100?ml vessel in a single batch. About 95% of cells expressed pancreatic and duodenal homeobox factor 1, and 22% co‐expressed the transcription factor NKX6.1. Furthermore, culture of pancreatic progenitor cells for an additional 2?weeks yielded mature pancreatic cells, including C‐peptide‐, glucagon‐ and trypsin‐expressing cell populations. Moreover, differentiated β‐cells secreted insulin in response to increased glucose in vitro . These findings suggest that a three‐dimensional suspension culture system can generate human pancreatic progenitor cells from human iPSCs. Further optimization of culture conditions should provide sufficient functional islet cells for transplantation therapy. Copyright ? 2017 John Wiley & Sons, Ltd.
机译:摘要胰岛置换术是治疗1型糖尿病患者和接受全胰腺切除术患者的一种很有前景的策略。细胞重编程技术的最新进展可能允许移植患者自身的胰腺细胞。尽管许多研究报道了从小鼠和人类多能干细胞(PSC)分化胰腺祖细胞,但获得足够数量的细胞用于临床应用仍然存在问题。在这里,我们描述了使用三维悬浮生物反应器系统从人类诱导的(i)PSC大规模生产人类胰腺祖细胞。在生物反应器中培养具有阶段特异性生长因子和小化合物的细胞17?日产量约为1.6??×??10 8 ?细胞/100?1毫升容器,一批。约95%的细胞表达胰腺和十二指肠同源盒因子1,22%的细胞共表达转录因子NKX6。1.此外,胰腺祖细胞的培养需要额外的2?数周后产生成熟的胰腺细胞,包括C肽、胰高血糖素和胰蛋白酶表达细胞群。此外,分化的β细胞在体外分泌胰岛素以应对葡萄糖的增加。这些发现表明,三维悬浮培养系统可以从人IPSC中生成人胰腺祖细胞。培养条件的进一步优化应为移植治疗提供足够的功能性胰岛细胞。版权2017年约翰·威利;儿子有限公司。

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