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. 2025 Apr 20;52(1):404.
doi: 10.1007/s11033-025-10432-3.

Do human adipose stem cell-derived artificial insulin-producing cells develop tumorigenic characteristics throughout differentiation?

Affiliations

Do human adipose stem cell-derived artificial insulin-producing cells develop tumorigenic characteristics throughout differentiation?

Parastoo Salehi Babadi et al. Mol Biol Rep. .

Abstract

Background: Artificial insulin-producing cells (IPCs) used to treat diabetes mellitus type 1 (DMT1) are naturally hampered by their carcinogenicity. This in vitro study aimed to examine the carcinogenic potential of IPCs produced by the differentiation of human adipose tissue-derived mesenchymal stem cells (hADSCs).

Methods and results: hADSCs were transformed into IPCs by administering insulin-transferrin, selenium (ITS), and nicotinamide in a 14-day differentiation protocol. The cells were transfected with 20 μg of pure Pdx1-pIRES recombinant vector on the tenth day of differentiation. The successful transfection was confirmed by Pdx1 overexpression and GFP fluorescence activity. The differentiated cells' capacity to release insulin and glucose-dependent C-peptide was used to evaluate their functionality. Gene expression was assessed using real-time PCR. Meanwhile, protein expression was investigated using western blotting. The transfected cells exhibited fluorescence activity and Pdx1 overexpression. The differentiated IPCs were able to secrete C-peptide and insulin. The artificial IPCs showed significantly reduced Oct4 and Nanog expression. However, the differentiation process induced a noticeable elevation in tPA expression. The artificial IPCs expressed much lower c-MYC expression compared to undifferentiated hADSCs. The differentiated cells exhibited a significant elevation in Glut2, MMP-2, CD24, P16, and P21 expression.

Conclusions: The differentiation technique used in this work produced functional beta-like cells devoid of typical markers of stem cells. The synthetic IPCs displayed characteristics of newly generated β-like cells. The artificial IPCs showed no signs of expressing tumor-associated markers. The findings imply that the artificial IPC cells lack tumor characteristics in vitro.

Keywords: Artificial insulin-producing cells; Differentiation; Human adipose tissue-derived mesenchymal stem cells; Tumor.

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Conflict of interest statement

Declarations. Conflict of interest: The authors declare no competing interests. Ethical approval: All protocols of the present study were approved by the research ethics committee of the Marvdasht Branch, Islamic Azad University, Marvdasht, Iran (IR.IAU.M.REC.1402.005).

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