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Article

Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus

  • Authors:
    • Hee Young Kang
    • Eui-Man Jung
    • Eui-Ju Hong
    • Sang-Hwan Hyun
    • Woo-Suk Hwang
    • Eui-Bae Jeung
  • View Affiliations / Copyright

    Affiliations: Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea, Laboratory of Veterinary Embryology and Biotechnology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea, SooAm Biotech Research Foundation, Seoul 137-851, Republic of Korea
  • Pages: 1136-1142
    |
    Published online on: May 20, 2014
       https://doi.org/10.3892/mmr.2014.2255
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Abstract

Inducible cyclic AMP (cAMP) early repressor (ICER) Iγ acts as an endogenous inhibitor and disrupts the transcriptional regulation of cAMP response element binding protein (CREBP) responsive genes. Since the overexpression of ICER Iγ induces severe diabetes in a transgenic mouse model, with characteristics similar to human diabetes mellitus, an ICER Iγ construct containing an adjustable pancreas tissue specific promoter was utilized in the present study. Using the human insulin promoter region, a doxycycline (dox)‑inducible ICER Iγ expression system was established using the tetracycline (tet)-controlled transactivator (tTA) with a TA response element (TRE) promoter. A unitary tet-on system that combined a tet-on activator cassette was also developed and was controlled by the human insulin promoter with a responder cassette containing genes encoding ICER Iγ regulated by the TRE promoter. To determine whether dox-enhanced ICER Iγ expression affected insulin production, the unitary tet-on ICER Iγ vector was introduced into a mouse pancreatic β-cell line and then the cells were treated with 0.1-1 mg/ml dox. The results revealed a robust increase in ICER Iγ expression and decreased insulin production. Therefore, this in vitro system may be useful for studying human diabetes mellitus and pre-diabetes using tissue-specific promoters and a dox-inducible transgene. In addition, porcine transgenic fibroblasts containing dox-inducible ICER Iγ were generated. These fibroblasts may serve as a cell source for somatic cell nuclear transfer to generate a porcine model of human diabetes mellitus.
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Copy and paste a formatted citation
Spandidos Publications style
Kang HY, Jung E, Hong E, Hyun S, Hwang W and Jeung E: Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus. Mol Med Rep 10: 1136-1142, 2014.
APA
Kang, H.Y., Jung, E., Hong, E., Hyun, S., Hwang, W., & Jeung, E. (2014). Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus. Molecular Medicine Reports, 10, 1136-1142. https://doi.org/10.3892/mmr.2014.2255
MLA
Kang, H. Y., Jung, E., Hong, E., Hyun, S., Hwang, W., Jeung, E."Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus". Molecular Medicine Reports 10.2 (2014): 1136-1142.
Chicago
Kang, H. Y., Jung, E., Hong, E., Hyun, S., Hwang, W., Jeung, E."Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus". Molecular Medicine Reports 10, no. 2 (2014): 1136-1142. https://doi.org/10.3892/mmr.2014.2255
Copy and paste a formatted citation
x
Spandidos Publications style
Kang HY, Jung E, Hong E, Hyun S, Hwang W and Jeung E: Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus. Mol Med Rep 10: 1136-1142, 2014.
APA
Kang, H.Y., Jung, E., Hong, E., Hyun, S., Hwang, W., & Jeung, E. (2014). Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus. Molecular Medicine Reports, 10, 1136-1142. https://doi.org/10.3892/mmr.2014.2255
MLA
Kang, H. Y., Jung, E., Hong, E., Hyun, S., Hwang, W., Jeung, E."Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus". Molecular Medicine Reports 10.2 (2014): 1136-1142.
Chicago
Kang, H. Y., Jung, E., Hong, E., Hyun, S., Hwang, W., Jeung, E."Generation of transgenic fibroblasts expressing pancreas‑specific and doxycycline-inducible ICER Iγ for the establishment of a porcine model of human diabetes mellitus". Molecular Medicine Reports 10, no. 2 (2014): 1136-1142. https://doi.org/10.3892/mmr.2014.2255
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