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Alginate encapsulated human mesenchymal stem cells suppress syngeneic glioma growth in the immunocompetent rat

机译:海藻酸盐包封的人间充质干细胞抑制免疫力大鼠中同基因胶质瘤的生长

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摘要

Human mesenchymal stem cells (MSC) are promising candidates for cell therapy of neurological diseases. However, co-transplantation of MSC with tumour cell lines has been reported to promote tumour growth. In this study, we co-transplant glioma cells together with alginate-encapsulated MSC Immunocompetent BD-IX rats were inoculated with syngeneic BT4Ca glioma cells. Encapsulated unmodified MSC, endostatin producing (endoMSC) or cell-free alginate capsules were stereotactically implanted into the tumour bed. After 12 days, tumour volumes were significantly diminished in the MSC-treated group. The decrease in tumour volume found with endoMSC was statistically not significant, despite significantly reduced tumour vascularization. We conclude that, under syngeneic conditions in the immunocompetent animal, (1) the intracranial, orthotopic co-transplantation of MSC with glioma cells leads to a suppression in tumour growth and (2) the tumour can escape the antiangiogenic treatment with endostatin. Our finding may facilitate the clinical translation of encapsulated cell therapy.
机译:人间充质干细胞(MSC)是神经疾病细胞治疗的有希望的候选者。然而,已经报道了将MSC与肿瘤细胞系共移植可促进肿瘤生长。在这项研究中,我们将同基因的BT4Ca胶质瘤细胞与海藻酸盐包裹的MSC免疫适应性BD-IX大鼠一起共移植了神经胶质瘤细胞。将封装的未修饰的MSC,内皮抑素生成(endoMSC)或无细胞藻酸盐胶囊立体定位到肿瘤床中。 12天后,MSC治疗组的肿瘤体积显着减少。尽管显着减少了肿瘤血管形成,但使用endoMSC发现的肿瘤体积减少在统计学上并不显着。我们得出的结论是,在具有免疫能力的动物的同基因条件下,(1)MSC与神经胶质瘤细胞的颅内,原位共移植导致肿瘤生长受到抑制,(2)肿瘤可以逃避内皮抑素的抗血管生成治疗。我们的发现可能有助于封装细胞疗法的临床翻译。

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