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Infection and Immunity, July 2008, p. 3011-3018, Vol. 76, No. 7
0019-9567/08/$08.00+0     doi:10.1128/IAI.01672-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Expression of CD1d and Ligand-Induced Cytokine Production Are Tissue Specific in Mucosal Epithelia of the Human Lower Reproductive Tract{triangledown}

Kei Kawana,1,2,3 Junko Matsumoto,1 Shiho Miura,1 Li Shen,4 Yukiko Kawana,1,2 Takeshi Nagamatsu,1 Toshiharu Yasugi,1 Tomoyuki Fujii,1 Huixia Yang,5 Alison J. Quayle,5 Yuji Taketani,1 and Danny J. Schust2,3*

Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan,1 Division of Reproductive Biology, Department of Obstetrics and Gynecology, Boston Medical Center, Boston University School of Medicine, 715 Albany Street, Evans 241, Boston, Massachusetts 02445,2 Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115,3 Division of Infectious Diseases, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts 02118,4 Department of Microbiology, Immunology and Parasitology, Louisiana State University Health Sciences Center, New Orleans, Louisiana 701125

Received 15 December 2007/ Returned for modification 17 January 2008/ Accepted 24 April 2008

Mucosal epithelia of the human lower reproductive tract (vagina, cervix, and penile urethra) are exposed to sexually transmitted microbes, including Chlamydia trachomatis. The in vivo susceptibility of each tissue type to infection with C. trachomatis is quite distinct. CD1d is expressed on the surface of antigen-presenting cells, including mucosal epithelial cells, and interacts specifically with invariant NKT cells. Invariant NKT cells play a role in both innate and adaptive immune responses to microbes. Here we assessed CD1d expression in normal reproductive tissues by using immunohistochemistry. Immortalized epithelial cell lines from the human lower reproductive tract (vagina, endocervix, and penile urethra) were examined for CD1d expression and for ligand-induced cytokine production induced by CD1d cross-linking. CD1d expression in normal tissue was strong in the vagina but weak in the endocervix and penile urethra. Gamma interferon exposure induced CD1d transcription in all of the cell types studied, with the strongest induction in vaginal cells. Flow cytometry revealed cell surface expression of CD1d in vaginal and penile urethral epithelial cells but not in endocervical cells. Ligation of surface-expressed CD1d by monoclonal antibody cross-linking promoted interleukin-12 (IL-12) and IL-15, but not IL-10, production in vaginal and penile urethral cells. No induction was demonstrated in endocervical cells. CD1d-mediated cytokine production in penile urethral cells was abrogated by C. trachomatis infection. Basal deficiency in CD1d-mediated immune responsiveness may result in susceptibility to sexually transmitted agents. Decreased CD1d-mediated signaling may help C. trachomatis evade detection by innate immune cells.

* Corresponding author. Present address: Division of Reproductive Endocrinology and Fertility, Department of Obstetrics, Gynecology and Women's Health, University of Missouri—Columbia School of Medicine, Columbia Regional Hospital, 402 Keene Street, Third floor, Columbia, MO 65201. Phone: (573) 499-6044. Fax: (573) 499-6065. E-mail: schustd{at}health.missouri.edu

{triangledown} Published ahead of print on 5 May 2008.

Editor: R. P. Morrison

Infection and Immunity, July 2008, p. 3011-3018, Vol. 76, No. 7
0019-9567/08/$08.00+0     doi:10.1128/IAI.01672-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



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