Volume 48, Issue 9 pp. 2555-2566
Research Article

Antagonist of monocyte chemoattractant protein 1 ameliorates the initiation and progression of lupus nephritis and renal vasculitis in MRL/lpr mice

Hitoshi Hasegawa

Corresponding Author

Hitoshi Hasegawa

Ehime University School of Medicine, Ehime, Japan

First Department of Internal Medicine, Ehime University School of Medicine, Shigenobu, Ehime 791-0295, JapanSearch for more papers by this author
Masashi Kohno

Masashi Kohno

Ehime University School of Medicine, Ehime, Japan

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Miho Sasaki

Miho Sasaki

Ehime University School of Medicine, Ehime, Japan

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Atsushi Inoue

Atsushi Inoue

Ehime University School of Medicine, Ehime, Japan

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Mitsuko R. Ito

Mitsuko R. Ito

Ehime University School of Medicine, Ehime, Japan

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Miho Terada

Miho Terada

Ehime University School of Medicine, Ehime, Japan

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Kunio Hieshima

Kunio Hieshima

Kinki University School of Medicine, Osaka, Japan

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Hiroki Maruyama

Hiroki Maruyama

Niigata University School of Medicine, Niigata, Japan

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Jun-ichi Miyazaki

Jun-ichi Miyazaki

Osaka University Medical School, Osaka, Japan

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Osamu Yoshie

Osamu Yoshie

Kinki University School of Medicine, Osaka, Japan

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Masato Nose

Masato Nose

Ehime University School of Medicine, Ehime, Japan

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Shigeru Fujita

Shigeru Fujita

Ehime University School of Medicine, Ehime, Japan

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First published: 11 September 2003
Citations: 125

Abstract

Objective

To examine whether chemokine antagonists inhibit the initiation and progression of lupus nephritis in MRL/lpr mice.

Methods

NH2-terminal–truncated monocyte chemoattractant protein 1 (MCP-1)/CCL2 or thymus and activation–regulated chemokine (TARC)/CCL17 analogs were inserted into the pCXN2 expression vector and transfected into a nonmetastatic fibroblastoid cell line, MRL/N-1, established from an MRL/gld mouse.

Results

MCP-1 antagonist– or TARC antagonist–transfected MRL/N-1 cells were injected subcutaneously into MRL/lpr mice ages 7 weeks (before the onset of lupus nephritis) and 12 weeks (at the early stage of the disease). After 8 weeks, mice bearing the MCP-1 antagonist showed markedly diminished infiltration of macrophages and T cells, glomerular hypercellularity, glomerulosclerosis, crescent formation, and vasculitis compared with control mice. This seemed to be due to decreased production of interferon-γ and interleukin-2 in the kidney. In contrast, there was no significant difference in renal damage between mice bearing TARC antagonist and control mice.

Conclusion

We established a new system using MRL/N-1 cells that allows long-term observation of the effects of chemokine antagonists on lupus nephritis in MRL/lpr mice. We also showed that the MCP-1 antagonist ameliorated the initiation and progression of lupus nephritis and of renal vasculitis, which might provide a new approach to the treatment of the disease.

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