Abstract:
BACKGROUND:There is little information on the function of dendritic cells in women with human papillomavirus (HPV)-related cervical squamous intraepithelial lesions (SILs). In the current study the functions of dendritic cells in the development of T-cell immunity in women with cervical SILs were assessed. METHODS:The percentage of myeloid dendritic cells (MDCs) and plasmacytoid dendritic cells (PDCs) in peripheral blood were enumerated of 44 patients with SIL (low-grade, 19; high-grade, 25), 19 patients with atypical squamous cells of undetermined significance (ASCUS), and 18 controls. The expression of costimulatory receptors was assessed and the ability of monocyte-derived dendritic cells (MDDC) to present HPV16-E6 and HPV16-E7 antigens to autologous T cells. RESULTS:Patients with either low (L)-grade or high (H)-grade SIL had significantly lower median plasma levels of interferon-gamma than did the controls (P = .038 and .031, respectively). Compared with the controls, patients with ASCUS or LSILs had significantly lower median percentages of MDCs (P = .002 and P < .001, respectively), and significantly lower median percentages of MDDCs that expressed CD86 (P < .001 and P = .003, respectively) and major histocompatability complex class-II antigen human leukocyte antigen DR (HLA-DR) (P = .012 and P < .001, respectively). T cells of patients with ASCUS or LSILs proliferated less than those of the controls in response to HPV16-E7 (P = .002 and .046, respectively). CONCLUSIONS:Low levels of peripheral blood MDCs and of MDDCs expressing CD86 and HLA-DR suggest that deficiencies in the ability of MDDC to present antigen to autologous T cells may lead to persistent infection with HPV and the development of cervical SILs in HPV-infected women.
journal_name
Cancerjournal_title
Cancerauthors
Lee BN,Follen M,Rodriquez G,Shen DY,Malpica A,Shearer WT,Reuben JMdoi
10.1002/cncr.22092subject
Has Abstractpub_date
2006-09-01 00:00:00pages
999-1007issue
5eissn
0008-543Xissn
1097-0142journal_volume
107pub_type
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