Related Experiment Video
Updated: Aug 6, 2026
13:58
Peptide:MHC Tetramer-based Enrichment of Epitope-specific T cells
Published on: October 22, 2012
Co-evolution of a primordial peptide-presentation system and cellular immunity
1Department of Developmental Immunology, Max-Planck Institute of Immunobiology, Stübeweg 51, D-79108 Freiburg, Germany. boehm@immunbio.mpg.de
Nature Reviews. Immunology
|February 24, 2006
Summary
Early vertebrates managed self-reactivity in their immune systems using ancient genetic relatedness evaluation mechanisms. These quality-control systems, crucial for adaptive immunity, likely originated from sexual selection processes.
Area of Science:
- Evolutionary immunology
- Innate and adaptive immunity
- Vertebrate immune system development
Background:
- Lymphocytes utilize antigen receptors with random specificities, posing a risk of self-reactivity.
- Understanding the evolutionary origins of immune system quality-control mechanisms is crucial.
Approach:
- Proposing a novel hypothesis linking immune system evolution to sexual selection.
- Examining the potential role of genetic relatedness evaluation in early vertebrate immunity.
Key Points:
- Ancient mechanisms for evaluating genetic relatedness may have predated adaptive immunity.
- These mechanisms could have been co-opted to control self-reactivity in lymphocytes.
- Sexual selection provides a plausible evolutionary framework for such quality-control systems.
Conclusions:
- The adaptive immune system's ability to manage self-reactivity may have roots in pre-existing sexual selection strategies.
- This evolutionary perspective offers insights into the development of vertebrate immunity.
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