Cancer cells produce liver metastasis via gap formation in sinusoidal endothelial cells through proinflammatory paracrine mechanisms

Intracellular gap (iGap) formation in liver sinusoidal endothelial cells (LSECs) is caused by the destruction of fenestrae and appears under pathological conditions; nevertheless, their role in metastasis of cancer cells to the liver remained unexplored. We elucidated that hepatotoxin-damaged and fi...

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Detalhes bibliográficos
Autores: Hoang, Truong Huu, Sato Matsubara, Misako, Yuasa, Hideto, Matsubara, Tsutomu, Thuy, Le Thi Thanh, Ikenaga, Hiroko, Phuong, Dong Minh, Hanh, Ngo Vinh, Hieu, Vu Ngoc, Hoang, Dinh Viet, Hai, Hoang, Okina, Yoshinori, Enomoto, Masaru, Tamori, Akihiro, Daikoku, Atsuko, Urushima, Hayato, Ikeda, Kazuo, Dat, Ninh Quoc, Yasui, Yutaka, Shinkawa, Hiroji, Kubo, Shoji, Yamagishi, Ryota, Ohtani, Naoko, Yoshizato, Katsutoshi, Gracia Sancho, Jordi, Kawada, Norufumi
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Recursos:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/209163
Acesso em linha:https://hdl.handle.net/2445/209163
Access Level:acceso abierto
Palavra-chave:Càncer de fetge
Endoteli
Liver cancer
Endothelium
Descrição
Resumo:Intracellular gap (iGap) formation in liver sinusoidal endothelial cells (LSECs) is caused by the destruction of fenestrae and appears under pathological conditions; nevertheless, their role in metastasis of cancer cells to the liver remained unexplored. We elucidated that hepatotoxin-damaged and fibrotic livers gave rise to LSECs-iGap formation, which was positively correlated with increased numbers of metastatic liver foci after intrasplenic injection of Hepa1-6 cells. Hepa1-6 cells induced interleukin-23-dependent tumor necrosis factor-α (TNF-α) secretion by LSECs and triggered LSECs-iGap formation, toward which their processes protruded to transmigrate into the liver parenchyma. TNF-α triggered depolymerization of F-actin and induced matrix metalloproteinase 9 (MMP9), intracellular adhesion molecule 1, and CXCL expression in LSECs. Blocking MMP9 activity by doxycycline or an MMP2/9 inhibitor eliminated LSECs-iGap formation and attenuated liver metastasis of Hepa1-6 cells. Overall, this study revealed that cancer cells induced LSEC-iGap formation via proinflammatory paracrine mechanisms and proposed MMP9 as a favorable target for blocking cancer cell metastasis to the liver.

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