The E2 protein of human papillomavirus type 8 increases the expression of matrix metalloproteinase-9 in human keratinocytes and organotypic skin cultures.

Akgül, B; García-Escudero, R; Ekechi, C; Steger, G; Navsaria, H; Pfister, H; Storey, A

Journal article

The E2 protein of human papillomavirus type 8 increases the expression of matrix metalloproteinase-9 in human keratinocytes and organotypic skin cultures.

Abstract:: Non-melanoma skin cancer (NMSC) is the most frequent human cancer of Caucasian populations. Although the ultraviolet irradiation is a key contributor to the establishment of this keratinocyte malignancy, the infection by some types of human papillomavirus (HPV) has also been implicated in NMSC development. Cancers occur as a result of a complex series of interactions between the cancer cell and its surrounding matrix. The matrix metalloproteinases (MMPs) play a role in degrading the extracellular matrix. MMP9 is an important gelatinase involved in processes such as cell migration, invasion and metastasis. In this report, we demonstrated by EMSA experiments that the MMP9 promoter contains a binding site for the transcriptional regulator E2 of HPV8. Transient reporter gene assays showed that HPV8-E2 activated the MMP9 promoter in a dose-dependent manner in human epidermal keratinocytes. An E2 transactivation-defective mutant (I73L) as well as a DNA-binding deficient mutant (R433K) demonstrated no activation of the MMP9 promoter, suggesting that both an intact transactivation and DNA-binding domain are required for E2 activation of the MMP9-promoter. The functional role of the E2 binding site within the MMP9 promoter was also confirmed by mutating the E2 binding site. In organotypic cultures of human skin, an overexpression of MMP9 was observed in suprabasal layers of the HPV8 E2-expressing epidermis thus confirming the results of the monolayer cultures. These results demonstrate that the early gene E2 of HPV8 is able to increase the expression of MMP9 by direct activation of the MMP9-promoter.

Publication status:: Published

Actions

Email

Email this record

Send the bibliographic details of this record to your email address.

Your Email
Please enter the email address that the record information will be sent to.

-
Your message (optional)
Please add any additional information to be included within the email.
Share
Cite

Cite this record

APA Style

Akgül, B., García-Escudero, R., Ekechi, C., Steger, G., Navsaria, H., Pfister, H., & Storey, A. (2011). The E2 protein of human papillomavirus type 8 increases the expression of matrix metalloproteinase-9 in human keratinocytes and organotypic skin cultures. Medical Microbiology and Immunology, 200(2), 127–135.

MLA Style

Akgül, B, et al. “The E2 Protein of Human Papillomavirus Type 8 Increases the Expression of Matrix Metalloproteinase-9 in Human Keratinocytes and Organotypic Skin Cultures.” Medical Microbiology and Immunology, vol. 200, no. 2, 2011, pp. 127–35.

Chicago Style

Akgül, B, R García-Escudero, C Ekechi, et al. 2011. “The E2 Protein of Human Papillomavirus Type 8 Increases the Expression of Matrix Metalloproteinase-9 in Human Keratinocytes and Organotypic Skin Cultures.” Medical Microbiology and Immunology 200 (2): 127–35.
Print