CD8+ T-Cell-Derived Tumor Necrosis Factor Can Induce Tissue Factor Expression on Monocytes.

Freeman, Michael L; Panigrahi, Soumya; Chen, Bonnie; Juchnowski, Steven; Sieg, Scott F; Lederman, Michael M; Funderburg, Nicholas T; Zidar, David A · J Infect Dis · 2019

basic_science · Level V

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Abstract

Circulating CD8+ T cells and monocytes are activated during human immunodeficiency virus (HIV) infection and colocalize in the aortas of simian immunodeficiency virus-infected nonhuman primates. We hypothesized that CD8+ T cells could exert a proatherosclerotic effect via paracrine actions on monocytes. We found that T-cell receptor-stimulated CD8+ T cells induce monocytes to express tissue factor, a potent activator of coagulation. Tumor necrosis factor was both necessary and sufficient for this effect.

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