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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
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Towards gene therapy for IPEX syndrome.

Simon Borna1, Esmond Lee1,2, Yohei Sato1

  • 1Department of Pediatrics, Division of Hematology, Oncology, Stem Cell Transplantation and Regenerative Medicine, Stanford University School of Medicine, Stanford, California, USA.

European Journal of Immunology
|March 31, 2022
PubMed
Summary

Immune dysregulation polyendocrinopathy enteropathy X linked (IPEX) syndrome is an untreatable immune disorder. Gene therapy offers a promising, less invasive treatment by restoring FOXP3 expression, addressing limitations of current therapies.

Keywords:
DNA editingFOXP3Gene therapyIPEXTreg cells

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Area of Science:

  • Immunology
  • Genetics
  • Regenerative Medicine

Background:

  • Immune dysregulation polyendocrinopathy enteropathy X linked (IPEX) syndrome is a severe monogenic disorder caused by FOXP3 mutations.
  • Current treatments like immune suppression and stem cell transplantation have limitations and long-term consequences.
  • Gene therapy in autologous cells has proven effective for similar blood disorders.

Purpose of the Study:

  • To review current advancements in gene therapy for IPEX syndrome.
  • To highlight the challenges in restoring complex FOXP3 expression and function.
  • To explore gene therapy as a potential alternative to existing IPEX treatments.

Main Methods:

  • Review of existing literature on IPEX syndrome and gene therapy approaches.
  • Analysis of strategies for FOXP3 gene transfer and regulation.
  • Evaluation of therapeutic potential for autologous cell-based gene therapy.

Main Results:

  • Gene therapy presents a viable alternative to current IPEX treatments.
  • Restoring FOXP3 expression requires precise regulation and cell-specific targeting.
  • Successful gene therapy could offer a less invasive and potentially curative approach.

Conclusions:

  • Gene therapy development for IPEX syndrome is ongoing.
  • Addressing FOXP3's complex expression is key to successful gene therapy.
  • This approach holds promise for a more effective and safer IPEX treatment.