|
||
J. Exp. Med.,
Volume 187, Number 4, February 16, 1998 601-608
By


From the * Department of Adult Oncology, Monocyte chemoattractant protein 1 (MCP-1) is a CC chemokine that attracts monocytes,
memory T lymphocytes, and natural killer cells. Because other chemokines have similar target
cell specificities and because CCR2, a cloned MCP-1 receptor, binds other ligands, it has been
uncertain whether MCP-1 plays a unique role in recruiting mononuclear cells in vivo. To address this question, we disrupted SCYA2 (the gene encoding MCP-1) and tested MCP-1-deficient mice in models of inflammation. Despite normal numbers of circulating leukocytes and
resident macrophages, MCP-1
Perlmutter
Laboratory, Children's Hospital, Harvard Medical School, Boston, Massachusetts 02115; the § Department of Pathology, University of Michigan Medical School, Ann Arbor, Michigan 48105; and
the ¶ Trudeau Institute, Saranac Lake, New York 12983
/
mice were specifically unable to recruit monocytes 72 h after intraperitoneal thioglycollate administration. Similarly, accumulation of F4/80+ monocytes
in delayed-type hypersensitivity lesions was impaired, although the swelling response was normal. Development of secondary pulmonary granulomata in response to Schistosoma mansoni
eggs was blunted in MCP-1
/
mice, as was expression of IL-4, IL-5, and interferon
in splenocytes. In contrast, MCP-1
/
mice were indistinguishable from wild-type mice in their ability to clear Mycobacterium tuberculosis. Our data indicate that MCP-1 is uniquely essential for
monocyte recruitment in several inflammatory models in vivo and influences expression of cytokines related to T helper responses.
This article has been cited by other articles:
| TABLE OF CONTENTS |
|