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Infection and Immunity, June 2004, p. 3688-3692, Vol. 72, No. 6
0019-9567/04/$08.00+0     DOI: 10.1128/IAI.72.6.3688-3692.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

CD4+ T Lymphocytes from Anaplasma marginale Major Surface Protein 2 (MSP2) Vaccinees Recognize Naturally Processed Epitopes Conserved in MSP3

Wendy C. Brown,1* Guy H. Palmer,1 Kelly A. Brayton,1 Patrick F. M. Meeus,2 Anthony F. Barbet,2 Kimberly A. Kegerreis,1 and Travis C. McGuire1

Program in Vector-Borne Diseases, Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington 99164-7040,1 Department of Pathobiology, College of Veterinary Medicine, University of Florida, Gainesville, Florida 32611-08802

Received 23 December 2003/ Returned for modification 9 February 2004/ Accepted 16 February 2004

Major surface protein 2 (MSP2) and MSP3 of the persistent bovine ehrlichial pathogen Anaplasma marginale are immunodominant proteins that undergo antigenic variation. The recently completed sequence of MSP3 revealed blocks of amino acids in the N and C termini that are conserved with MSP2. This study tested the hypothesis that CD4+ T cells specific for MSP2 recognize naturally processed epitopes conserved in MSP3. At least one epitope in the N terminus and two in the C terminus of MSP2 were also processed from MSP3 and presented to CD4+ T lymphocytes from MSP2-immunized cattle. This T-lymphocyte response to conserved and partially conserved epitopes may contribute to the immunodominance of MSP2 and MSP3.

* Corresponding author. Mailing address: Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, WA 99164-7040. Phone: (509) 335-6067. Fax: (509) 335-8529. E-mail: wbrown{at}vetmed.wsu.edu.

Editor: W. A. Petri., Jr.

Infection and Immunity, June 2004, p. 3688-3692, Vol. 72, No. 6
0019-9567/04/$08.00+0     DOI: 10.1128/IAI.72.6.3688-3692.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

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