Continuous immunotypes describe human immune variation and predict diverse responses

Kevin J. Kaczorowski, Karthik Shekhar, Dieudonné Nkulikiyimfura, Cornelia L. Dekker, Holden Maecker, Mark M. Davis, Arup K. Chakraborty, Petter Brodin

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

The immune system consists of many specialized cell populations that communicate with each other to achieve systemic immune responses. Our analyses of various measured immune cell population frequencies in healthy humans and their responses to diverse stimuli show that human immune variation is continuous in nature, rather than characterized by discrete groups of similar individuals. We show that the same three key combinations of immune cell population frequencies can define an individual’s immunotype and predict a diverse set of functional responses to cytokine stimulation. We find that, even though interindividual variations in specific cell population frequencies can be large, unrelated individuals of younger age have more homogeneous immunotypes than older individuals. Across age groups, cytomegalovirus seropositive individuals displayed immunotypes characteristic of older individuals. The conceptual framework for defining immunotypes suggested by our results could guide the development of better therapies that appropriately modulate collective immunotypes, rather than individual immune components.

Original languageEnglish
Pages (from-to)E6097-E6106
JournalProceedings of the National Academy of Sciences of the United States of America
Volume114
Issue number30
DOIs
StatePublished - 25 Jul 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017, National Academy of Sciences. All rights reserved.

Keywords

  • Aging
  • Human immune variation
  • Immune cell composition
  • Systems immunology

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