期刊
JOURNAL OF IMMUNOLOGY
卷 174, 期 11, 页码 7172-7178出版社
AMER ASSOC IMMUNOLOGISTS
DOI: 10.4049/jimmunol.174.11.7172
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资金
- NCI NIH HHS [T32 CA009320, R01 CA74397, P01 CA97296] Funding Source: Medline
- NIGMS NIH HHS [T32GM067587] Funding Source: Medline
Human papillomavirus (HPV) infection of cervical epithelium is linked to the generation of cervical cancer. Although most women infected with HPV clear their lesions, the long latency period from infection to resolution indicates that HPV evolved immune escape mechanisms. Dendritic cells, which are targeted by vaccination procedures, incubated with HPV virus-like particles induce an HPV-specific immune response. Langerhans cells (LC), which are located at the sites of primary infection, do not induce a response implicating the targeting of LC as an immune escape mechanism used by HPV. LC incubated with HPV virus-like particles up-regulate the phosphoinositide 3-kinase (PI3-K) pathway and down-regulate MAPK pathways. With the inhibition of PI3-K and incubation with HPV virus-like particles, LC initiate a potent HPV-specific response. PI3-K activation in LC defines a novel escape mechanism used by HPV, and PI3-K inhibition may serve as an effective clinical target to enhance HPV immunity.
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