Three-dimensional Vascularized ß-cell Spheroid Tissue Derived From Human Induced Pluripotent Stem Cells for Subcutaneous Islet Transplantation in a Mouse Model of Type 1 Diabetes.
Transplantation
; 106(1): 48-59, 2022 01 01.
Article
em En
| MEDLINE
| ID: mdl-34905762
ABSTRACT
BACKGROUND:
Islet transplantation is an effective replacement therapy for type 1 diabetes (T1D) patients. However, shortage of donor organ for allograft is obstacle for further development of the treatment. Subcutaneous transplantation with stem cell-derived ß-cells might overcome this, but poor vascularity in the site is burden for success in the transplantation. We investigated the effect of subcutaneous transplantation of vascularized ß-cell spheroid tissue constructed 3-dimensionally using a layer-by-layer (LbL) cell-coating technique in a T1D model mouse.METHODS:
We used MIN6 cells to determine optimal conditions for the coculture of ß-cell spheroids, normal human dermal fibroblasts, and human umbilical vein endothelial cells, and then, under those conditions, we constructed vascularized spheroid tissue using human induced pluripotent stem cell-derived ß-cells (hiPS ß cells). The function of insulin secretion of the vascularized hiPS ß-cell spheroid tissue was evaluated in vitro. Furthermore, the function was investigated in T1D model NOD/SCID mice subcutaneously transplanted with the tissue.RESULTS:
In vitro, the vascularized hiPS ß-cell spheroid tissue exhibited enhanced insulin secretion. The vascularized hiPS ß-cell spheroid tissue also significantly decreased blood glucose levels in diabetic immunodeficient mice when transplanted subcutaneously. Furthermore, host mouse vessels were observed in the explanted vascularized hiPS ß-cell spheroid tissue.CONCLUSIONS:
Vascularized hiPS ß-cell spheroid tissue decreased blood glucose levels in the diabetic mice. This therapeutic effect was suggested due to host angiogenesis in the graft. This method could lead to a promising regenerative treatment for T1D patients.
Texto completo:
1
Coleções:
01-internacional
Temas:
Geral
Base de dados:
MEDLINE
Assunto principal:
Transplante das Ilhotas Pancreáticas
/
Diabetes Mellitus Experimental
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Diabetes Mellitus Tipo 1
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Células-Tronco Pluripotentes Induzidas
Limite:
Animals
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Humans
Idioma:
En
Revista:
Transplantation
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Japão