Article ; Online: High-Resolution Quantitative Mapping of Macaque Cervicovaginal Epithelial Thickness: Implications for Mucosal Vaccine Delivery.
2021 Volume 12, Page(s) 660524
Abstract: Vaginal mucosal surfaces naturally offer some protection against sexually transmitted infections (STIs) including Human Immunodeficiency Virus-1, however topical preventative medications or vaccine designed to boost local immune responses can further ... ...
Abstract | Vaginal mucosal surfaces naturally offer some protection against sexually transmitted infections (STIs) including Human Immunodeficiency Virus-1, however topical preventative medications or vaccine designed to boost local immune responses can further enhance this protection. We previously developed a novel mucosal vaccine strategy using viral vectors integrated into mouse dermal epithelium to induce virus-specific humoral and cellular immune responses at the site of exposure. Since vaccine integration occurs at the site of cell replication (basal layer 100-400 micrometers below the surface), temporal epithelial thinning during vaccine application, confirmed with high resolution imaging, is desirable. In this study, strategies for vaginal mucosal thinning were evaluated noninvasively using optical coherence tomography (OCT) to map reproductive tract epithelial thickness (ET) in macaques to optimize basal layer access in preparation for future effective intravaginal mucosal vaccination studies. Twelve adolescent female rhesus macaques (5-7kg) were randomly assigned to interventions to induce vaginal mucosal thinning, including cytobrush mechanical abrasion, the chemical surfactant spermicide nonoxynol-9 (N9), the hormonal contraceptive depomedroxyprogesterone acetate (DMPA), or no intervention. Macaques were evaluated at baseline and after interventions using colposcopy, vaginal biopsies, and OCT imaging, which allowed for real-time |
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MeSH term(s) | Animals ; Cervix Uteri/cytology ; Drug Delivery Systems ; Epithelial Cells ; Epithelium/drug effects ; Epithelium/immunology ; Female ; Macaca mulatta ; Mice ; Mucous Membrane/anatomy & histology ; Mucous Membrane/drug effects ; Mucous Membrane/immunology ; Simian Immunodeficiency Virus/physiology ; Tomography, Optical Coherence/methods ; Vaccines/administration & dosage ; Vaccines/immunology ; Vagina/cytology ; Vagina/immunology |
Chemical Substances | Vaccines |
Language | English |
Publishing date | 2021-06-28 |
Publishing country | Switzerland |
Document type | Journal Article ; Research Support, N.I.H., Extramural |
ZDB-ID | 2606827-8 |
ISSN | 1664-3224 ; 1664-3224 |
ISSN (online) | 1664-3224 |
ISSN | 1664-3224 |
DOI | 10.3389/fimmu.2021.660524 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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