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Human immunity in vitro - solving immunogenicity and more.

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Three-dimensional (3D) in vitro models show promise for accurately predicting human immune responses to biopharmaceuticals and nanodrugs, overcoming limitations of animal testing and 2D cell cultures.

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Area of Science:

  • Biomedical Engineering
  • Immunology
  • Drug Development

Background:

  • Phylogenetic distance between animals and humans limits predictive value of current immunogenicity testing.
  • Traditional 2D in vitro assays have shown limited success in modeling complex immune responses.
  • Need for advanced in vitro models that better mimic human immune system functions.

Purpose of the Study:

  • To review the status of 3D in vitro models for emulating human innate and adaptive immunity.
  • To correlate lymphoid organ architecture changes with in vitro immune responses.
  • To provide recommendations for improving 3D models for adaptive immune response development.

Main Methods:

  • Review and analysis of various 3D in vitro approaches.
  • Emulation of innate immunity in non-lymphoid organs.
  • Modeling of adaptive immune response in human lymphoid organs in vitro.
  • Assessment of lymphoid tissue architecture dynamics in vitro.

Main Results:

  • 3D models offer improved emulation of innate immunity in non-lymphoid organs compared to 2D assays.
  • Adaptive immune responses in vitro can be modeled by mimicking lymphoid organ architecture.
  • The dynamic changes in lymphoid organ structure are crucial for a sustainable in vitro adaptive immune response.

Conclusions:

  • 3D in vitro models are superior to 2D assays for predicting human immune responses.
  • Optimizing lymphoid tissue architecture in 3D models is key for developing robust adaptive immunity.
  • Future translational innovations aim to model systemic innate and adaptive immunity in vitro.