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Cell source | Induce MSCs into IPCs | Transplantation way and results |
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Rat BM-MSCs [26] | Stage 1, 6 days: 10 ng/ml bFGF, 10 ng/ml EGF, 2% B27 | Transplantation way: injected into intraperitoneal |
Stage 2, 6 days: 10 ng/ml HGF, 10 ng/ml b-cellulin, 10 ng/ml AA, 10 mmol/L NA, 2% B27 | Results: IPC transplantation improved insulin level better than MSC transplantation |
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Human BM-MSCs [24]; | Stage 1, 3 days: 55 nmol/L TSA, serum-free DMEM | Transplantation way: cells were loaded in 2 TheraCyte capsules and transplanted under the rectus sheath |
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Mice BM-MSCs [28] | Stage 2, 7 days:10 nmol/L GLP-1, 10% FBS, DMEM : DMEM/F12 | Results: the transplanted cells were glucose-responsive and insulin-secreting. Four weeks after transplantation, blood sugar values became normal |
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Rat AD-MSCs [29] | Stage 1, 2 days: 10 mmol/l NA, 0.5 mmol/l β-mercaptoethanol and serum-free high-glucose DMEM (25 mmol/l) | Transplantation way: transplanted into the distal tip of the spleen |
Stage 2, 26 days: 30 ng/ml FGF, 10 mmol/l NA and serum-free high-glucose DMEM (25 mmol/l) | Results: IPC transplantation significantly reduced the glucose level. And IPCs were indeed responsive to a glucose challenge in vivo |
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Human UC-MSCs [30] | Stage 1, 7 days: CMRL1066 medium containing 10% FBS, 1% PSA, 100 ng/ml of β-nerve growth factor, 4 nM AA, 10 mM NA, and 25 ng/ml EGF | Transplantation way: injected through a retroorbital vein |
Stage 2, 7–10 days: the culture medium was changed to DMEM/F12, and the other components were the same as those in stage 1 | Results: IPC transplantation decreased blood glucose, improved glucose tolerance, increased body weight, and prolonged the survival time of NOD mice. And IPCs containing human C-peptide and human nuclei were located in the liver |
Stage 3, 17 days: 10 mM NA, ITS, and 10 ng/ml bFGF |
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Human BM-MSCs [23] | Stage 1, 2 days: serum-free, glucose-rich DMEM (25 mmol/L) containing 0.5 mmol/L β-mercaptoethanol | Transplantation way: inserted under the renal capsule |
Stage 2, 8 days: serum-free, glucose-rich medium containing 1% nonessential amino acids, 20 ng/ml bFGF, 20 ng/ml EGF, 2% B27 supplement, and 2 mmol/L L-glutamine | Results: IPC treatment resulted in control of nude diabetic mice diabetic status for 3 months |
Stage 3, 8 days: serum free, glucose-rich DMEM containing 10 ng/ml betacellulin, 10 ng/ml AA, 2% B27 supplement, and 10 mmol/L NA |
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Human BM-MSCs [31] | Stage 1, 3 days: DMEM, 55 nmol/L TSA | Transplantation way: implanted beneath the renal capsule |
Stage 2, 7 days: high-glucose (25 mmol/L) medium containing a 1 : 1 ratio of DMEM : DMEM/F12, 10% FBS, and 10 nmol/L GLP-1 | Results: diabetic mice became euglycemic 8 ± 3 days after transplantation. The results of the oral glucose tolerance test were normal |
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Rat BM-MSCs [32] | Stage 1, 2 days: DMEM low-glucose medium containing 10 mmol/L NA,0.5 mmol/L 2-mercaptoethanol, and 5% FBS | Transplantation way: injected via tail veins |
Stage 2, 24 hours: serum-free DMEM high-glucose medium containing 0.5 mol/L 2-mercaptoethanol, 10 mmol/L NA, 5% FBS, and10 ng/Ml AA | Results: IPC therapy significantly improved the body weight and serum insulin, alpha-amylase, adiponectin, creatinine, total cholesterol, triacylglycerol, IL-6, TNF-α, liver L-malonaldehyde, and glycogen levels in the STZ-induced diabetes model |
Stage 3, 8 days: DMEM-HG medium containing 20 ng/mL bFGF, 20 ng/mL EGF, 2 mmol/L L-glutamine, 5% FBS, and10 mmol/L NA |
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Human UC-MSCs [33] | Stage 1, 2 days: DMEM/F12 (1 : 1) with 17.5 mM glucose, 1% fatty acid-free BSA Cohn fraction V, 4 nM AA, 1% PSA, 1× ITS-X (ITS-X; 5 mg/L insulin, 5 mg/L transferrin, and 5 mg/L selenium), and 50 μM 2-mercaptoethanol | Transplantation way: injected via the portal vein |
Stage 2, 2 days: DMEM/F12 (1 : 1) with 17.5 mM glucose, 1% BSA, 1% PSA, ITS-X, and 0.3 mM taurine | Results: IPC treatment increased serum insulin and C-peptide level and improved glucose tolerance |
Stage 3, 6 days: DMEM/F12 (1 : 1) with 17.5 mM glucose, 1.5% BSA, ITS-X, 1% PSA, 3 mM taurine, 100 nM GLP-1, 1 mM NA, and 1× nonessential amino acids |
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