Inhibition of plasmin attenuates murine acute graft-versus-host disease mortality by suppressing the matrix metalloproteinase-9-dependent inflammatory cytokine storm and effector cell trafficking

Autor: Yoshio Okada, Beate Heissig, Makoto Ishihara, Yoshihiko Tashiro, Chiemi Nishida, Atsushi Sato, Hiromitsu Nakauchi, Satoshi Takahashi, Yuko Tsuda, Kaori Sato-Kusubata, Ismael Gritli, Shinya Munakata, Koichi Hattori, Akihiro Tojo, Ko Okumura, Hiroshi Shimazu, Hideo Yagita
Rok vydání: 2014
Předmět:
Zdroj: Leukemia. 29:145-156
ISSN: 1476-5551
0887-6924
DOI: 10.1038/leu.2014.151
Popis: The systemic inflammatory response observed during acute graft-versus-host disease (aGVHD) is driven by proinflammatory cytokines, a 'cytokine storm'. The function of plasmin in regulating the inflammatory response is not fully understood, and its role in the development of aGVHD remains unresolved. Here we show that plasmin is activated during the early phase of aGVHD in mice, and its activation correlated with aGVHD severity in humans. Pharmacological plasmin inhibition protected against aGVHD-associated lethality in mice. Mechanistically, plasmin inhibition impaired the infiltration of inflammatory cells, the release of membrane-associated proinflammatory cytokines including tumor necrosis factor-α (TNF-α) and Fas-ligand directly, or indirectly via matrix metalloproteinases (MMPs) and alters monocyte chemoattractant protein-1 (MCP-1) signaling. We propose that plasmin and potentially MMP-9 inhibition offers a novel therapeutic strategy to control the deadly cytokine storm in patients with aGVHD, thereby preventing tissue destruction.
Databáze: OpenAIRE