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Journal of Virology, August 1999, p. 6590-6597, Vol. 73, No. 8
The Beirne B. Carter Center for Immunology
Research1 and the Departments of
Pediatrics,2
Microbiology,3 and
Pathology,4 University of Virginia
Health Sciences Center, Charlottesville, Virginia 22908
Received 19 January 1999/Accepted 7 May 1999
In BALB/c mice, sensitization to respiratory syncytial virus (RSV)
attachment (G) glycoprotein leads to the development of lung
eosinophilia upon challenge infection with RSV, a pathology indicative
of a strong in vivo induction of a Th-2-type response. In this study,
we found that a strong, RSV G-specific, Th-1-type cytokine response
occurred simultaneously with a Th-2-type response in G-primed mice
after RSV challenge. Both Th-1 and Th-2 effector CD4+ T
cells recognized a single immunodominant site on this protein, implying
that the differentiation of memory CD4+ T cells along the
Th-1 or Th-2 effector pathway was independent of the epitope
specificity of the T cells. A similar observation was made in G-primed
H-2b haplotype mice after RSV challenge,
further suggesting that this process is not dependent on the peptide
epitope presented. On the other hand, genes mapping to loci outside of
the major histocompatibility complex region are crucial regulators of
the development of a Th-2-type response and lung eosinophilia. The
implication of these findings for the immune mechanisms underlying the
pathogenesis of RSV is discussed.
0022-538X/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Induction of Th-1 and Th-2 Responses by Respiratory
Syncytial Virus Attachment Glycoprotein Is Epitope and Major
Histocompatibility Complex Independent
*
Corresponding author. Mailing address for Anon
Srikiatkhachorn: Department of Pulmonary Medicine and Allergy,
Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH
45229-3039. Phone: (513) 636-3433. Fax: (513) 636-3310. E-mail:
srika0{at}chmcc.org. Mailing address for Thomas J. Braciale:
Beirne B. Carter Center for Immunology Research, University of Virginia
Hospital, MR4, Room 4021, Charlottesville, VA 22908. Phone: (804)
924-9233. Fax: (804) 924-1221. E-mail: tjbzr{at}Virginia.EDU.
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