Immune-evasive human islet-like organoids ameliorate diabetes.

Immune-evasive human islet-like organoids ameliorate diabetes.
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DOI:
10.1038/s41586-020-2631-z
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发表时间:
2020-10
期刊:
影响因子:
64.8
通讯作者:
Evans RM
Evans RM
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Yoshihara E;O'Connor C;Gasser E;Wei Z;Oh TG;Tseng TW;Wang D;Cayabyab F;Dai Y;Yu RT;Liddle C;Atkins AR;Downes M;Evans RM

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While stem cell-derived islets hold promise as a therapy for insulin-dependent diabetes, challenges remain in achieving this goal. Here we generate human islet-like organoids (HILOs) from induced pluripotent stem cells (iPSCs) and show that non-canonical WNT4 signaling drives the metabolic maturation necessary for robust ex vivo glucose-stimulated insulin secretion. These functionally mature HILOs contain endocrine-like cell types that, upon transplantation, rapidly re-establish glucose homeostasis in diabetic NOD-SCID mice. Overexpression of the immune checkpoint protein PD-L1 protected HILO xenografts such that they were able to restore glucose homeostasis in immune-competent diabetic mice for 50 days. Furthermore, ex vivo interferon gamma stimulation induced endogenous PD-L1 expression and restricted T cell activation and graft rejection. The generation of glucose-responsive islet-like organoids able to avoid immune detection provides a promising alternative to cadaveric and device-dependent therapies in the treatment of diabetes.
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