Understanding the mechanisms of HPV-related carcinogenesis : Implications for cell cycle dynamics
Copyright © 2022 Elsevier Ltd. All rights reserved..
The role of human papillomavirus (HPV) as a causative agent for epithelial cancers is well-known, but many open questions remain regarding the downstream gene regulatory effects of viral proteins E6 and E7 on the cell cycle. Here, we extend a cell cycle model originally presented by Gérard and Goldbeter (2009) in order to capture the effects of E6 and E7 on key actors in the cell cycle. Results suggest that E6 is sufficient to reverse p53-induced quiescence, while E7 is sufficient to reverse p16INK4a-induced quiescence; both E6 and E7 are necessary when p53 and p16INK4a are both active. Moreover, E7 appears to play a role as a "growth factor substitute", inducing cell division in the absence of growth factor. Low levels of E7 may permit regular cell division, but the results suggest that higher levels of E7 dysregulate the cell cycle in ways that may destabilize the cellular genome. The mechanisms explored here provide opportunities for developing new treatment targets that take advantage of the cell cycle regulatory system to prevent HPV-related cancer effects.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:551-552 |
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| Enthalten in: |
Journal of theoretical biology - 551-552(2022) vom: 07. Nov., Seite 111235 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Sund, Derrick T [VerfasserIn] |
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| Links: |
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| Themen: |
Cancer |
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| Anmerkungen: |
Date Completed 09.09.2022 Date Revised 08.11.2023 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.jtbi.2022.111235 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2022 Elsevier Ltd. All rights reserved. | ||
| 520 | |a The role of human papillomavirus (HPV) as a causative agent for epithelial cancers is well-known, but many open questions remain regarding the downstream gene regulatory effects of viral proteins E6 and E7 on the cell cycle. Here, we extend a cell cycle model originally presented by Gérard and Goldbeter (2009) in order to capture the effects of E6 and E7 on key actors in the cell cycle. Results suggest that E6 is sufficient to reverse p53-induced quiescence, while E7 is sufficient to reverse p16INK4a-induced quiescence; both E6 and E7 are necessary when p53 and p16INK4a are both active. Moreover, E7 appears to play a role as a "growth factor substitute", inducing cell division in the absence of growth factor. Low levels of E7 may permit regular cell division, but the results suggest that higher levels of E7 dysregulate the cell cycle in ways that may destabilize the cellular genome. The mechanisms explored here provide opportunities for developing new treatment targets that take advantage of the cell cycle regulatory system to prevent HPV-related cancer effects | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, N.I.H., Extramural | |
| 650 | 4 | |a Cancer | |
| 650 | 4 | |a Cell cycle | |
| 650 | 4 | |a HPV | |
| 650 | 4 | |a Mathematical modeling | |
| 650 | 7 | |a Cyclin-Dependent Kinase Inhibitor p16 |2 NLM | |
| 650 | 7 | |a Papillomavirus E7 Proteins |2 NLM | |
| 650 | 7 | |a Tumor Suppressor Protein p53 |2 NLM | |
| 700 | 1 | |a Brouwer, Andrew F |e verfasserin |4 aut | |
| 700 | 1 | |a Walline, Heather M |e verfasserin |4 aut | |
| 700 | 1 | |a Carey, Thomas E |e verfasserin |4 aut | |
| 700 | 1 | |a Meza, Rafael |e verfasserin |4 aut | |
| 700 | 1 | |a Jackson, Trachette |e verfasserin |4 aut | |
| 700 | 1 | |a Eisenberg, Marisa C |e verfasserin |4 aut | |
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