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| Content Provider | MDPI |
|---|---|
| Author | Ren, Binhai Tao, Chang Swan, Margaret Joachim, Nichole Martiniello-Wilks, Rosetta Nassif, Najah O’Brien, Bronwyn Simpson, Ann |
| Abstract | Due to the limitations of current treatment regimes, gene therapy is a promising strategy being explored to correct blood glucose concentrations in diabetic patients. In the current study, we used a retroviral vector to deliver either the human insulin gene alone, the rat NeuroD1 gene alone, or the human insulin gene and rat NeuroD1 genes together, to the rat liver cell line, H4IIE, to determine if storage of insulin and pancreatic transdifferentiation occurred. Stable clones were selected and expanded into cell lines: H4IIEins (insulin gene alone), H4IIE/ND (NeuroD1 gene alone), and H4IIEins/ND (insulin and NeuroD1 genes). The H4IIEins cells did not store insulin; however, H4IIE/ND and H4IIEins/ND cells stored 65.5 ± 5.6 and 1475.4 ± 171.8 pmol/insulin/5 × 106 cells, respectively. Additionally, several β cell transcription factors and pancreatic hormones were expressed in both H4IIE/ND and H4IIEins/ND cells. Electron microscopy revealed insulin storage vesicles in the H4IIE/ND and H4IIEins/ND cell lines. Regulated secretion of insulin to glucose (0–20 mmol/L) was seen in the H4IIEins/ND cell line. The H4IIEins/ND cells were transplanted into diabetic immunoincompetent mice, resulting in normalization of blood glucose. This data shows that the expression of NeuroD1 and insulin in liver cells may be a useful strategy for inducing islet neogenesis and reversing diabetes. |
| File Size | 2881536 |
| File Format | |
| e-ISSN | 14220067 |
| DOI | 10.3390/ijms17040534 |
| Journal | International Journal of Molecular Sciences |
| Issue Number | 4 |
| Volume Number | 17 |
| Language | English |
| Publisher Date | 2016-04-08 |
| Access Restriction | Open |
| Subject Keyword | diabetes gene therapy H4IIE cells regulated insulin secretion insulin storage secretory granules liver cells β cell transcription factors furin-cleavable human insulin |
| Content Type | Text |
| Resource Type | Article |
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