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Malone M, Maeyama A, Ogden N, Perry KN, Kramer A, Bates C, Marble C, Orlando R, Rausch A, Smeraldi C, Lowey C, Fees B, Dyson HJ, Dorrell M, Kast-Woelbern H, Jansma AL. The effect of phosphorylation efficiency on the oncogenic properties of the protein E7 from high-risk HPV. Virus Res 2024; 348:199446. [PMID: 39127239 DOI: 10.1016/j.virusres.2024.199446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/27/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
The Human papillomavirus (HPV) causes tumors in part by hijacking the host cell cycle and forcing uncontrolled cellular division. While there are >200 genotypes of HPV, 15 are classified as high-risk and have been shown to transform infected cells and contribute to tumor formation. The remaining low-risk genotypes are not considered oncogenic and result in benign skin lesions. In high-risk HPV, the oncoprotein E7 contributes to the dysregulation of cell cycle regulatory mechanisms. High-risk E7 is phosphorylated in cells at two conserved serine residues by Casein Kinase 2 (CK2) and this phosphorylation event increases binding affinity for cellular proteins such as the tumor suppressor retinoblastoma (pRb). While low-risk E7 possesses similar serine residues, it is phosphorylated to a lesser degree in cells and has decreased binding capabilities. When E7 binding affinity is decreased, it is less able to facilitate complex interactions between proteins and therefore has less capability to dysregulate the cell cycle. By comparing E7 protein sequences from both low- and high-risk HPV variants and using site-directed mutagenesis combined with NMR spectroscopy and cell-based assays, we demonstrate that the presence of two key nonpolar valine residues within the CK2 recognition sequence, present in low-risk E7, reduces serine phosphorylation efficiency relative to high-risk E7. This results in significant loss of the ability of E7 to degrade the retinoblastoma tumor suppressor protein, thus also reducing the ability of E7 to increase cellular proliferation and reduce senescence. This provides additional insight into the differential E7-mediated outcomes when cells are infected with high-risk verses low-risk HPV. Understanding these oncogenic differences may be important to developing targeted treatment options for HPV-induced cancers.
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Affiliation(s)
- Madison Malone
- Department of Chemistry, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Ava Maeyama
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Naomi Ogden
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Kayla N Perry
- Department of Chemistry, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Andrew Kramer
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Caleb Bates
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Camryn Marble
- Department of Chemistry, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Ryan Orlando
- Department of Chemistry, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Amy Rausch
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Caleb Smeraldi
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Connor Lowey
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Bronson Fees
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - H Jane Dyson
- Department of Integrative Structural and Computational Biology and Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, 92037, CA, USA
| | - Michael Dorrell
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA
| | - Heidi Kast-Woelbern
- Department of Biology, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA.
| | - Ariane L Jansma
- Department of Chemistry, Point Loma Nazarene University, 3900 Lomaland Drive, San Diego, 92126, CA, USA.
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Ding S, Wang H, Liao Y, Chen R, Hu Y, Wu H, Shen H, Tang S. HPV16 E7 protein antagonizes TNF-α-induced apoptosis of cervical cancer cells via Daxx/JNK pathway. Microb Pathog 2023; 185:106423. [PMID: 37871853 DOI: 10.1016/j.micpath.2023.106423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/20/2023] [Accepted: 10/20/2023] [Indexed: 10/25/2023]
Abstract
Human papillomavirus (HPV) E7 protein as an important viral factor was involved in the progression of cervical cancer by mediating the cellular signaling pathways. Daxx (Death domain-associated protein) can interact with a variety of proteins to affect the viral infection process. However, the interaction and its related function between HPV16 E7 and Daxx have not been adequately investigated. Here, it was found that HPV16 E7 can interact with Daxx in HeLa or C33A cells by co-immunoprecipitation. HPV16 E7 protein treatment can up-regulate Daxx protein expression, while the interference in Daxx expression and the agonists for JNK can both reduce the antagonistic effects of HPV16 E7 on TNF-α-induced apoptosis, suggesting that Daxx/JNK pathway may be involved in the anti-apoptotic activity of HPV16 E7.
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Affiliation(s)
- Shuang Ding
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China; Department of Clinical Laboratory, The Seventh Affiliated Hospital, University of South China / Hunan Provincial Veterans Administration Hospital, Changsha, China
| | - Hanmeng Wang
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China
| | - Yaqi Liao
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China
| | - Ranzhong Chen
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China
| | - Yu Hu
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China
| | - Hongrong Wu
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China
| | - Haiyan Shen
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China
| | - Shuangyang Tang
- Institute of Pathogenic Biology, School of Basic Medicine Sciences, Hengyang Medical College, University of South China, Hengyang, China.
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3
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Romero-Masters JC, Grace M, Lee D, Lei J, DePamphilis M, Buehler D, Hu R, Ward-Shaw E, Blaine-Sauer S, Lavoie N, White EA, Munger K, Lambert PF. MmuPV1 E7's interaction with PTPN14 delays Epithelial differentiation and contributes to virus-induced skin disease. PLoS Pathog 2023; 19:e1011215. [PMID: 37036883 PMCID: PMC10085053 DOI: 10.1371/journal.ppat.1011215] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 02/17/2023] [Indexed: 04/11/2023] Open
Abstract
Human papillomaviruses (HPVs) contribute to approximately 5% of all human cancers. Species-specific barriers limit the ability to study HPV pathogenesis in animal models. Murine papillomavirus (MmuPV1) provides a powerful tool to study the roles of papillomavirus genes in pathogenesis arising from a natural infection. We previously identified Protein Tyrosine Phosphatase Non-Receptor Type 14 (PTPN14), a tumor suppressor targeted by HPV E7 proteins, as a putative cellular target of MmuPV1 E7. Here, we confirmed the MmuPV1 E7-PTPN14 interaction. Based on the published structure of the HPV18 E7/PTPN14 complex, we generated a MmuPV1 E7 mutant, E7K81S, that was defective for binding PTPN14. Wild-type (WT) and E7K81S mutant viral genomes replicated as extrachromosomal circular DNAs to comparable levels in mouse keratinocytes. E7K81S mutant virus (E7K81S MmuPV1) was generated and used to infect FoxN/Nude mice. E7K81S MmuPV1 caused neoplastic lesions at a frequency similar to that of WT MmuPV1, but the lesions arose later and were smaller than WT-induced lesions. The E7K81S MmuPV1-induced lesions also had a trend towards a less severe grade of neoplastic disease. In the lesions, E7K81S MmuPV1 supported the late (productive) stage of the viral life cycle and promoted E2F activity and cellular DNA synthesis in suprabasal epithelial cells to similar degrees as WT MmuPV1. There was a similar frequency of lateral spread of infections among mice infected with E7K81S or WT MmuPV1. Compared to WT MmuPV1-induced lesions, E7K81S MmuPV1-induced lesions had a significant expansion of cells expressing differentiation markers, Keratin 10 and Involucrin. We conclude that an intact PTPN14 binding site is necessary for MmuPV1 E7's ability to contribute to papillomavirus-induced pathogenesis and this correlates with MmuPV1 E7 causing a delay in epithelial differentiation, which is a hallmark of papillomavirus-induced neoplasia.
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Affiliation(s)
- James C. Romero-Masters
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Miranda Grace
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Denis Lee
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Joshua Lei
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Melanie DePamphilis
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Darya Buehler
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Rong Hu
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Ella Ward-Shaw
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Simon Blaine-Sauer
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
| | - Nathalie Lavoie
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
- Molecular Microbiology Program, Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, United States of America
| | - Elizabeth A. White
- Department of Otorhinolaryngology, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Karl Munger
- Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, Massachusetts, United States of America
- Molecular Microbiology Program, Graduate School of Biomedical Sciences, Tufts University, Boston, Massachusetts, United States of America
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, United States of America
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Lin Z, Zhao Y, Li Q, Ci X, Ye X, Chen G, Tu Q, Feng W, Jiang P, Zhu S, Xue X, Saunders NA, Zhang L, Zhu X, Zhao KN. OUP accepted manuscript. Carcinogenesis 2022; 43:479-493. [PMID: 35134836 DOI: 10.1093/carcin/bgac010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 01/19/2022] [Accepted: 02/02/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Zhongmin Lin
- Department of Pathology, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Yu Zhao
- Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuyin Children Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Qijia Li
- Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuyin Children Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Xingyuan Ci
- Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuyin Children Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Xiaoxian Ye
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Guorong Chen
- Department of Pathology, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Quanmei Tu
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Weixu Feng
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Pengfei Jiang
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Shanli Zhu
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Xiangyang Xue
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Nicholas A Saunders
- Diamantina Institute for Cancer Immunology and Metabolic Medicine, The University of Queensland, TRI, Woolloongabba, Queensland, Australia
| | - Lifang Zhang
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Xueqiong Zhu
- Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuyin Children Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
| | - Kong-Nan Zhao
- Department of Obstetrics and Gynaecology, The Second Affiliated Hospital and Yuyin Children Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China
- School of Basic Medical Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland, Australia
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Song JY, Park YM, Choi SY. Type 2 human papillomavirus E7 attenuates E-cadherin expression in human keratinocytes. J Microbiol 2021; 59:616-625. [PMID: 33779957 DOI: 10.1007/s12275-021-0690-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 10/21/2022]
Abstract
Human papillomaviruses (HPVs) are known to utilize the down-regulation of epithelial (E)-cadherin, a major component of adherens junctions of keratinocytes, to evade host immune surveillance in high-risk group. However, the effects of HPV on the function of E-cadherin in low-risk groups remain unknown. We investigated whether type 2 HPV (HPV-2) E7 could induce alterations in E-cadherin expression in transiently transfected keratinocytes and cell lines expressing HPV-2 E7. To examine the expression pattern of E-cadherin in cutaneous warts and normal skin samples, immunohistochemical analysis was performed. Quantitative real-time polymerase chain reactions, luciferase assays, western blot, immunocytochemistry, and electron microscopy were used to evaluate the mRNA and protein expression levels of E-cadherin in normal human epidermal keratinocytes transfected with HPV-2 E7 plasmid DNA or E7-specific siRNA and in E7-expressing cell lines. E-cadherin expression levels in HPV-2 positive cutaneous warts were significantly decreased compared to those in normal skin (p < 0.05). Similarly, the mRNA and protein expression levels of E-cadherin in E7 transiently transfected cells were significantly decreased compared to those in empty vector-transfected cells. The decreases were restored by transfection with E7-specific siRNA (p < 0.05). Likewise, cell lines expressing E7 showed a decreased expression of E-cadherin. When the cells were cultured in low attachment plates, cell-to-cell aggregation was inhibited. Taken together, our data suggest that HPV-2 E7, the causative agent of cutaneous warts, could mediate the transcriptional repression of E-cadherin.
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Affiliation(s)
- Ji Young Song
- Department of Biological Sciences and Biotechnology, College of Life Sciences and Nanotechnology, Hannam University, Daejeon, 34054, Republic of Korea
- Program of Immunology & Microbiology, Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Young Min Park
- Program of Immunology & Microbiology, Department of Biomedicine & Health Sciences, Graduate School, The Catholic University of Korea, Seoul, 06591, Republic of Korea
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Soon Yong Choi
- Department of Biological Sciences and Biotechnology, College of Life Sciences and Nanotechnology, Hannam University, Daejeon, 34054, Republic of Korea.
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Bian W, Chen W, Jiang X, Qu H, Jiang J, Yang J, Liang X, Zhao B, Sun Y, Zhang C. Downregulation of Long Non-coding RNA Nuclear Paraspeckle Assembly Transcript 1 Inhibits MEG-01 Differentiation and Platelet-Like Particles Activity. Front Genet 2020; 11:571467. [PMID: 33193674 PMCID: PMC7596361 DOI: 10.3389/fgene.2020.571467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 09/22/2020] [Indexed: 01/22/2023] Open
Abstract
Platelets are derived from megakaryocytes and play an important role in blood coagulation. By using high throughput sequencing, we have found that the long non-coding RNA (lncRNA) nuclear paraspeckle assembly transcript 1 (NEAT1) is abundant in platelets (GEO ID: 200097348). However, little is known about its role in regulating megakaryocyte differentiation and platelet activity. This study aims to clarify the effect of NEAT1 on MEG-01 differentiation and platelet-like particle (PLP) activity. NEAT1 in MEG-01 cells was knocked down by siRNA transfection. The adhesion of MEG-01 and PLP to collagen-coated coverslips was observed under a fluorescence microscope. Flow cytometry was used to investigate cell apoptosis, cell cycle, the levels of D41/CD42b on MEG-01 cells and CD62P on PLPs. Quantitative real-time polymerase chain reaction was used to detect NEAT1 and IL-8 expression levels. Western blot was used to measure the protein levels of Bcl-2, Bax, cleaved caspase-3, and IL-8. RNA-binding protein immunoprecipitation was used to detect the interaction of NEAT1 and splicing factor proline/glutamine-rich (SFPQ). Results showed that NEAT1 knockdown decreased the adhesion ability of thrombin-stimulated MEG-01 and PLP. The expression of CD62P on PLPs and CD41/CD42b on MEG-01 cells was inhibited by NEAT1 knockdown. In addition, NEAT1 knockdown inhibited cell apoptosis with increased Bcl2/Bax ratio and decreased cleaved caspase-3, and reduced the percentage of cells in the G0/G1 phase. Meanwhile, NEAT1 knockdown inhibited the expression of IL-8. A strong interaction of NEAT1 and SFPQ, a transcriptional repressor of IL-8, was identified. NEAT1 knockdown reduced the interaction between SFPQ and NEAT1.The results suggest that lncRNA NEAT1 knockdown decreases MEG-01 differentiation, PLP activity, and IL-8 level. The results also indicate that the regulation of NEAT1 on IL-8 may be realized via a direct interaction between NEAT1 and SFPQ.
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Affiliation(s)
- Weihua Bian
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Wangping Chen
- Department of Cardiovascular Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xiaoli Jiang
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Huiqing Qu
- Department of Blood Transfusion, Affiliated Hospital of Binzhou Medical University, Binzhou, China
| | - Jing Jiang
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Jinfu Yang
- Department of Cardiovascular Surgery, The Second Xiangya Hospital of Central South University, Changsha, China
| | - Xinyue Liang
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Bingrui Zhao
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Yeying Sun
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Chunxiang Zhang
- School of Pharmacy, Binzhou Medical University, Yantai, China
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