ArticleInternational journal of oncology2020
E7 oncoprotein from human papillomavirus 16 alters claudins expression and the sealing of epithelial tight junctions.
Article in International journal of oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 6 citations in OpenAlex.
- The Impact of the Vaginal Microbiome and Microbial Metabolites on HIV Transmission at the Female Reproductive Tract Epithelial Barrier.American journal of reproductive immunology (New York, N.Y. : 1989) · 2026Review
- Fibroblasts Regulate the Transformation Potential of Human Papillomavirus-positive Keratinocytes.bioRxiv : the preprint server for biology · 2024Article
- The Role of ZO-2 in Modulating JAM-A and γ-Actin Junctional Recruitment, Apical Membrane and Tight Junction Tension, and Cell Response to Substrate Stiffness and Topography.International journal of molecular sciences · 2024Article
- Transgenic HPV11-E2 protein modulates URR activity in vivo.Transgenic research · 2023Article
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Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tight junctions (TJs) are cell‑cell adhesion structures frequently altered by oncogenic transformation. In the present study the role of human papillomavirus (HPV) 16 E7 oncoprotein on the sealing of TJs was investigated and also the expression level of claudins in mouse cervix and in epithelial Madin‑Darby Canine Kidney (MDCK) cells. It was found that there was reduced expression of claudins ‑1 and ‑10 in the cervix of 7‑month‑old transgenic K14E7 mice treated with 17β‑estradiol (E2), with invasive cancer. In addition, there was also a transient increase in claudin‑1 expression in the cervix of 2‑month‑old K14E7 mice, and claudin‑10 accumulated at the border of cells in the upper layer of the cervix in FvB mice treated with E2, and in K14E7 mice treated with or without E2. These changes were accompanied by an augmented paracellular permeability of the cervix in 2‑ and 7‑month‑old FvB mice treated with E2, which became more pronounced in K14E7 mice treated with or without E2. In MDCK cells the stable expression of E7 increased the space between adjacent cells and altered the architecture of the monolayers, induced the development of an acute peak of transepithelial electrical resistance accompanied by a reduced expression of claudins ‑1, ‑2 and ‑10, and an increase in claudin‑4. Moreover, E7 enhances the ability of MDCK cells to migrate through a 3D matrix and induces cell stiffening and stress fiber formation. These observations revealed that cell transformation induced by HPV16 E7 oncoprotein was accompanied by changes in the pattern of expression of claudins and the degree of sealing of epithelial TJs.
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