Uremic toxins are conditional danger- or homeostasis-associated molecular patterns

Yu Sun, Candice Johnson, Jun Zhou, Luqiao Wang, Ya Feng Li, Yifan Lu, Gayani Nanayakkara, Hangfei Fu, Ying Shao, Claudette Sanchez, William Y. Yang, Xin Wang, Eric T. Choi, Rongshan Li, Hong Wang, Xiao Feng Yang

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

We mined novel uremic toxin (UT) metabolomics/gene databases, and analyzed the expression changes of UT receptors and UT synthases in chronic kidney disease (CKD) and cardiovascular disease (CVD). We made the following observations: 1) UTs represent only 1/80th of human serum small-molecule metabolome; 2) Some UTs are increased in CKD and CVD; 3) UTs either induce or suppress the expression of inflammatory molecules; 4) The expression of UT genes is significantly modulated in CKD patients, and coronary artery disease (CAD) patients; 5) The expression of UT genes is upregulated by caspase-1 and TNF-alpha pathways but is inhibited in regulatory T cells. These results demonstrate that UTs are selectively increased, and serve as danger signal-associated molecular patterns (DAMPs) and homeostasis-associated molecular patterns (HAMPs) that modulate inflammation. These results also show that some UT genes are upregulated in CKD and CAD via caspase-1/inflammatory cytokine pathways, rather than by purely passive accumulation.

Original languageEnglish
Pages (from-to)348-387
Number of pages40
JournalFrontiers in Bioscience - Landmark
Volume23
Issue number2
DOIs
StatePublished - Jan 1 2018
Externally publishedYes

Keywords

  • DAMP
  • DAMPs
  • Danger Signal-Associated Molecular Patterns
  • HAMP receptors
  • HAMPs
  • Homeostasis-Associated Molecular Patterns
  • Inflammation
  • Uremia
  • Uremic Toxins

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