Islet transplantation in the subcutaneous space achieves long-term euglycaemia in preclinical models of type 1 diabetes.

Islet transplantation in the subcutaneous space achieves long-term euglycaemia in preclinical models of type 1 diabetes.
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DOI:
10.1038/s42255-020-0269-7
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发表时间:
2020-10
期刊:
影响因子:
20.8
通讯作者:
Naji A
Naji A
中科院分区:
医学1区
文献类型:
--
作者:
Yu M;Agarwal D;Korutla L;May CL;Wang W;Griffith NN;Hering BJ;Kaestner KH;Velazquez OC;Markmann JF;Vallabhajosyula P;Liu C;Naji A

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肝内环境不适合门静脉内胰岛同种异体移植物,限制了其治疗1型糖尿病(T1 D)的适用性。尽管皮下空间代表了胰岛移植的替代、安全且容易进入的部位,但缺乏新血管形成和由此导致的缺氧细胞死亡在很大程度上限制了移植物存活和功能的寿命,并对胰岛移植在临床中的广泛采用构成了障碍。在这里,我们报告了成功的皮下移植胰岛混合装置的胰岛活力矩阵(IVM),导致长期的免疫功能正常和免疫功能不全的动物模型。我们使用小鼠、猪和人胰岛验证了我们的移植方法提供的持续正常血糖,并在非人灵长类动物同基因胰岛移植模型中证明了其疗效。在皮下空间中移植胰岛-IVM混合物代表了一种简单、安全和可重复的方法,为T1 D的新治疗模式铺平了道路。
The intrahepatic milieu is inhospitable to intraportal islet allografts, limiting their applicability for the treatment of Type 1 Diabetes (T1D). Although the subcutaneous space represents an alternate, safe and easily accessible site for pancreatic islet transplantation, lack of neovascularization and the resulting hypoxic cell death have largely limited the longevity of graft survival and function, and pose a barrier for the widespread adoption of islet transplantation in the clinic. Here we report the successful subcutaneous transplantation of pancreatic islets admixed with a device-free Islet Viability Matrix (IVM), resulting in long-term euglycemia in diverse immune-competent and immuno-incompetent animal models. We validate sustained normoglycemia afforded by our transplantation methodology using murine, porcine and human pancreatic islets, and also demonstrate its efficacy in a nonhuman primate model of syngeneic islet transplantation. Transplantation of the islet–IVM mixture in the subcutaneous space represents a simple, safe and reproducible method, paving the way for a new therapeutic paradigm for T1D.
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