Defective Signaling in the JAK-STAT Pathway Tracks with Chronic Inflammation and Cardiovascular Risk in Aging Humans

Shai S. Shen-Orr, David Furman, Brian A. Kidd, Francois Hadad, Patricia Lovelace, Ying Wen Huang, Yael Rosenberg-Hasson, Sally Mackey, Fatemeh A.Gomari Grisar, Yishai Pickman, Holden T. Maecker, Yueh hsiu Chien, Cornelia L. Dekker, Joseph C. Wu, Atul J. Butte, Mark M. Davis

Research output: Contribution to journalArticlepeer-review

91 Scopus citations


Chronic inflammation, a decline in immune responsiveness, and reduced cardiovascular function are all associated with aging, but the relationships among these phenomena remain unclear. Here, we longitudinally profiled a total of 84 signaling conditions in 91 young and older adults and observed an age-related reduction in cytokine responsiveness within four immune cell lineages, most prominently T cells. The phenotype can be partially explained by elevated baseline levels of phosphorylated STAT (pSTAT) proteins and a different response capacity of naive versus memory T cell subsets to interleukin 6 (IL-6), interferon α (IFN-α), and, to a lesser extent, IL-21 and IFN-γ. Baseline pSTAT levels tracked with circulating levels of C-reactive protein (CRP), and we derived a cytokine response score that negatively correlates with measures of cardiovascular disease, specifically diastolic dysfunction and atherosclerotic burden, outperforming CRP. Thus, we identified an immunological link between inflammation, decreased cell responsiveness in the JAK-STAT pathway, and cardiovascular aging. Targeting chronic inflammation may ameliorate this deficiency in cellular responsiveness and improve cardiovascular function.

Original languageEnglish
Pages (from-to)374-384.e4
JournalCell Systems
Issue number4
StatePublished - 26 Oct 2016


  • aging
  • cardiovascular
  • cytokine responses
  • immune monitoring
  • immune signaling
  • immunosenescence
  • inflammaging
  • systems immunology


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