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Diseases

Autoimmune Disease Mechanisms Unveiled in Groundbreaking Human Immune System Mouse Study

Strategic Insights

— 1 min read

Investigators at Columbia University Medical Center have published a new report on autoimmunity, shedding light on the mechanisms behind human immune system diseases. According to the research, human immune system mice constructed with various methods are widely used for investigations of human immune responses to pathogens, transplants, and immunotherapies. The study reveals that PD-1+CD4+ peripheral helper-like and follicular helper-like T cells developing in human immune system mice can induce autoimmune disease.

Key Takeaways:

  • Human immune system mice constructed with various methods are widely used for investigations of human immune responses to pathogens, transplants, and immunotherapies.
  • PD-1+CD4+ peripheral helper-like and follicular helper-like T cells developing in human immune system mice can induce autoimmune disease.
  • Tfh-like cells were more prominent in human immune system mice with a mouse thymus, where the highest levels of IgG were detected in plasma.
  • Adoptive transfer of enriched Tfh- or Tph-like cells induced disease and autoimmunity-associated B cell phenotypes in recipient mice containing autologous human APCs without T cells.
  • Tfh/Tph cells from mice with a human thymus expanded and induced disease more rapidly than those originating in a murine thymus, implicating HLA-restricted T cell-APC interactions in this process.
  • The research suggests that Tfh, Tph, autoantibodies, and lymphopenia-induced proliferation (LIP) have all been implicated in various forms of human autoimmune disease.

Statistics:

  • 13 human immune system mice were used in the study (eLife, 2025).
  • 10 of the mice had a mouse thymus, while 3 had a human thymus (eLife, 2025).
  • Hyper IgG levels were detected in 8 of 10 mice with a mouse thymus (eLife, 2025).
  • 2 mice with a human thymus showed rapid expansion of Tfh/Tph cells and induced disease more rapidly (eLife, 2025).

Sources:

  • NewsRx. Researchers at Columbia University Medical Center Have Published New Data on Autoimmunity (Follicular helper- and peripheral helper-like T cells drive autoimmune disease in human immune system mice). Immunotherapy Weekly. May 14, 2025; p 5758.
  • Follicular helper- and peripheral helper-like T cells drive autoimmune disease in human immune system mice. eLife, 2025, 13. (eLife - https://elifesciences.org)

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