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Updated: Jul 18, 2026
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Utilizing Murine Inducible Telomerase Alleles in the Studies of Tissue Degeneration/Regeneration and Cancer
Published on: April 13, 2015
Improving cell therapy--experiments using transplanted telomerase-immortalized cells in immunodeficient mice
Qin Huang1, Meizhen Chen, Sitai Liang
1Department of Physiology, University of Texas Health Science Center at San Antonio, San Antonio, TX 78245, USA.
Mechanisms of Ageing and Development
|November 25, 2006
Summary
Cell therapy uses cells to treat age-related diseases. Immortalizing cells with human telomerase reverse transcriptase (hTERT) can improve their function and safety for transplantation.
Area of Science:
- Regenerative Medicine
- Cell Biology
- Genetics
Background:
- Cell therapy holds promise for age-related diseases but requires improved cell efficacy and long-term safety.
- Genetic modification, such as immortalization with human telomerase reverse transcriptase (hTERT), is a potential strategy to enhance cell therapy.
- Current challenges include ensuring the safety and efficacy of modified cells for routine clinical application.
Purpose of the Study:
- To evaluate the efficacy and safety of hTERT-immortalized adrenocortical cells in a mouse model for cell therapy.
- To investigate the tumorigenic potential of hTERT-modified cells under different transplantation conditions.
- To explore the role of gene expression changes in hTERT-modified cells and the potential of mesenchymal cell-assisted cell therapy.
Main Methods:
- Transplantation of hTERT-immortalized adrenocortical cells into adrenalectomized immunodeficient mice.
- Assessment of cell function by measuring hormone levels and observing tissue formation.
- Evaluation of tumorigenesis by implanting cells subcutaneously and under the kidney capsule, and testing for cooperation with oncoproteins.
Main Results:
- hTERT-immortalized adrenocortical cells successfully replaced adrenal gland function by forming vascularized tissue post-transplantation.
- hTERT-modified cells did not exhibit neoplastic changes or cooperate with oncoproteins in tumorigenesis in the subrenal capsule space.
- hTERT was necessary for tumorigenesis in subcutaneous implants, indicating site-specific safety considerations.
Conclusions:
- hTERT immortalization can enhance cell robustness and function for cell therapy applications.
- Understanding gene expression changes in hTERT-modified cells is crucial for controlling immortalization and other desirable traits.
- Genomics approaches are essential for defining safe and effective genetic modifications for cell therapy, including mesenchymal cell-assisted strategies.
