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Infection and Immunity, October 2005, p. 6514-6522, Vol. 73, No. 10
0019-9567/05/$08.00+0     doi:10.1128/IAI.73.10.6514-6522.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.

The Chemokine CCL2 Is Required for Control of Murine Gastric Salmonella enterica Infection

R. William DePaolo,1 Rashida Lathan,1 Barrett J. Rollins,2 and William J. Karpus1*

Department of Pathology, Northwestern University, Feinberg School of Medicine, Chicago, Illinois 60611,1 Dana Farber Cancer Institute, Harvard School of Medicine, Boston Massachusetts2

Received 25 August 2004/ Returned for modification 2 October 2004/ Accepted 1 July 2005

Salmonella enterica is a gram-negative intracellular pathogen that can cause a variety of diseases ranging from gastroenteritis to typhoid fever. The Typhimurium serotype causes gastroenteritis in humans; however, infection of mice results in an enteric fever that resembles human typhoid fever and has been used as a model for typhoid fever. The present study examined the role of the chemokine CCL2 in the control of Salmonella infection. Upon infection with salmonellae, mucosal expression of CCL2 is rapidly up-regulated, followed by systemic expression in the spleen. CCL2–/– mice became moribund earlier and had a higher rate of mortality compared to wild-type C57BL/6 mice. Moreover, CCL2–/– mice had significantly higher levels of bacteria in the liver compared to wild-type controls. Mucosal and serum interleukin-6 and tumor necrosis factor alpha levels were elevated in CCL2–/– mice compared to wild-type mice. In vitro analysis demonstrated that CCL2–/– macrophages infected with salmonellae resulted in dysregulated cytokine production compared to macrophages derived from wild-type mice. These data are the first to directly demonstrate CCL2 as a critical factor for immune responses and survival following S. enterica infection.

* Corresponding author. Mailing address: Department of Pathology, Northwestern University, Feinberg School of Medicine, 303 E. Chicago Avenue, W127, Chicago, IL 60611. Phone: (312) 503-1005. Fax: (312) 503-1217. E-mail: w-karpus{at}northwestern.edu.

Editor: F. C. Fang

Infection and Immunity, October 2005, p. 6514-6522, Vol. 73, No. 10
0019-9567/05/$08.00+0     doi:10.1128/IAI.73.10.6514-6522.2005
Copyright © 2005, American Society for Microbiology. All Rights Reserved.



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  • Fahy, O. L., Townley, S. L., McColl, S. R. (2006). CXCL16 Regulates Cell-Mediated Immunity to Salmonella enterica Serovar Enteritidis via Promotion of Gamma Interferon Production. Infect. Immun. 74: 6885-6894 [Abstract] [Full Text]  


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