E7 oncoprotein from human papillomavirus 16 alters claudins expression and the sealing of epithelial tight junctions
| Autor: | Rodolfo Ocádiz Delgado, Lourdes Alarcón, María Luisa Roldán, Rene Asomoza, Perla Yaceli Uc, Patricio Gariglio, Liora Shoshani, Enoc Mariano Cortés‑Malagón, G. Ramirez, Lorenza González‑Mariscal, Bibiana Chávez‑Munguía, Jael Miranda, Arturo Raya‑Sandino |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Cancer Research Stress fiber tight junctions Papillomavirus E7 Proteins Cell Uterine Cervical Neoplasms Mice Transgenic Biology 03 medical and health sciences Mice 0302 clinical medicine Dogs medicine Animals Humans Claudin human papillomavirus Cells Cultured Human papillomavirus 16 Oncogene Tight junction urogenital system Papillomavirus Infections Articles Cell cycle female genital diseases and pregnancy complications HPV E7 Cell biology Disease Models Animal 030104 developmental biology medicine.anatomical_structure paracellular permeability Oncology Apoptosis 030220 oncology & carcinogenesis Paracellular transport Female claudins |
| Zdroj: | International Journal of Oncology |
| ISSN: | 1791-2423 1019-6439 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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