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Peng X, Woodhouse I, Hancock G, Parker R, Marx K, Müller J, Salatino S, Partridge T, Nicastri A, Liao H, Kruppa G, Hellner K, Dorrell L, Ternette N. Novel canonical and non-canonical viral antigens extend current targets for immunotherapy of HPV-driven cervical cancer. iScience 2023; 26:106101. [PMID: 36876126 PMCID: PMC9978627 DOI: 10.1016/j.isci.2023.106101] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Revised: 08/30/2022] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
Current immunotherapeutic approaches for human papillomavirus (HPV)-driven cervical cancer target the viral oncogenes E6 and E7. We report viral canonical and alternative reading frame (ARF)-derived sequences presented on cervical tumor cells, including antigens encoded by the conserved viral gene E1. We confirm immunogenicity of the identified viral peptides in HPV-positive women, and women with cervical intraepithelial neoplasia. We observe consistent transcription of the E1, E6, and E7 genes in 10 primary cervical tumor resections from the four most common high-risk HPV subtypes (HPV16, 18, 31, and 45), suggesting the suitability of E1 as therapeutic target. We finally confirm HLA presentation of canonical peptides derived from E6 and E7, and ARF-derived viral peptides from a reverse-strand transcript spanning the HPV E1 and E2 genes in primary human cervical tumor tissue. Our results extend currently known viral immunotherapeutic targets in cervical cancer and highlight E1 as an important cervical cancer antigen.
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Affiliation(s)
- Xu Peng
- Centre for Immuno-Oncology, Nuffield Department of Medicine, University of Oxford, OX3 7DQ Oxford, UK
| | - Isaac Woodhouse
- Centre for Immuno-Oncology, Nuffield Department of Medicine, University of Oxford, OX3 7DQ Oxford, UK
| | - Gemma Hancock
- Nuffield Department of Medicine, University of Oxford, OX3 7FZ Oxford, UK
| | - Robert Parker
- Centre for Immuno-Oncology, Nuffield Department of Medicine, University of Oxford, OX3 7DQ Oxford, UK
- The Jenner Institute, University of Oxford, OX3 7DQ Oxford, UK
| | - Kristina Marx
- Bruker Daltonics, Fahrenheitstraße 4, 28359 Bremen, Germany
| | - Julius Müller
- The Jenner Institute, University of Oxford, OX3 7DQ Oxford, UK
| | - Silvia Salatino
- Wellcome Centre Human Genetics, University of Oxford, OX3 7BN Oxford, UK
| | - Thomas Partridge
- Nuffield Department of Medicine, University of Oxford, OX3 7FZ Oxford, UK
| | - Annalisa Nicastri
- Centre for Immuno-Oncology, Nuffield Department of Medicine, University of Oxford, OX3 7DQ Oxford, UK
- The Jenner Institute, University of Oxford, OX3 7DQ Oxford, UK
| | - Hanqing Liao
- Centre for Immuno-Oncology, Nuffield Department of Medicine, University of Oxford, OX3 7DQ Oxford, UK
- The Jenner Institute, University of Oxford, OX3 7DQ Oxford, UK
| | - Gary Kruppa
- Bruker Daltonics, Fahrenheitstraße 4, 28359 Bremen, Germany
| | - Karin Hellner
- Nuffield Department of Women’s and Reproductive Health, University of Oxford, John Radcliffe Hospital, OX3 9DU Oxford, UK
| | - Lucy Dorrell
- Nuffield Department of Medicine, University of Oxford, OX3 7FZ Oxford, UK
- The Jenner Institute, University of Oxford, OX3 7DQ Oxford, UK
- Immunocore Ltd., OX14 4RY Abingdon, UK
| | - Nicola Ternette
- Centre for Immuno-Oncology, Nuffield Department of Medicine, University of Oxford, OX3 7DQ Oxford, UK
- The Jenner Institute, University of Oxford, OX3 7DQ Oxford, UK
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Castro-Muñoz LJ, Rocha-Zavaleta L, Lizano M, Ramírez-Alcántara KM, Madrid-Marina V, Manzo-Merino J. Alteration of the IFN-Pathway by Human Papillomavirus Proteins: Antiviral Immune Response Evasion Mechanism. Biomedicines 2022; 10:biomedicines10112965. [PMID: 36428532 PMCID: PMC9687819 DOI: 10.3390/biomedicines10112965] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
A persistent infection with the so-called high-risk Human Papillomaviruses (hr-HPVs) plays a fundamental role in the development of different neoplasms. The expression of the HPV proteins throughout the different steps of the viral life cycle produce a disruption of several cellular processes, including immune response, which can lead to cell transformation. The interferon-mediated response plays an important role in eliminating HPV-infected and -transformed cells. The ability of HPV to disrupt the proper function of the interferon response is based on a series of molecular mechanisms coordinated by HPV proteins intended to prevent clearance of infection, ultimately producing an immunotolerant environment that facilitates the establishment of persistence and cancer. In this review, we focus on the molecular actions performed by HPV E1, E2, E5, E6 and E7 proteins on IFN signaling elements and their contribution to the establishment of infection, viral persistence and the progression to cancer.
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Affiliation(s)
- Leonardo Josué Castro-Muñoz
- The Wistar Institute, 3601 Spruce Street, Philadelphia, PA 19104, USA
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico
| | - Leticia Rocha-Zavaleta
- Departamento de Biología Molecular y Biotecnología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar S/N, Ciudad Universitaria, Delegación Coyoacán, Mexico City 04500, Mexico
| | - Marcela Lizano
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
| | - Katia Montserrat Ramírez-Alcántara
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico
| | - Vicente Madrid-Marina
- Dirección de Infecciones Crónicas y Cáncer, Centro de Investigación sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública, Av. Universidad 655, Santa María Ahuacatitlán, Cuernavaca, Morelos 62100, Mexico
| | - Joaquín Manzo-Merino
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico
- Cátedras CONACyT-Instituto Nacional de Cancerología, San Fernando No. 22, Col. Sección XVI, Tlalpan, Mexico City 14080, Mexico
- Correspondence:
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Baedyananda F, Sasivimolrattana T, Chaiwongkot A, Varadarajan S, Bhattarakosol P. Role of HPV16 E1 in cervical carcinogenesis. Front Cell Infect Microbiol 2022; 12:955847. [PMID: 35967849 PMCID: PMC9368317 DOI: 10.3389/fcimb.2022.955847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 07/06/2022] [Indexed: 12/12/2022] Open
Abstract
Cervical cancer is the fourth most common cancer in women worldwide. More than 90% of cases are caused by the human papillomavirus (HPV). Vaccines developed only guard against a few HPV types and do not protect people who have already been infected. HPV is a small DNA virus that infects the basal layer of the stratified epithelium of the skin and mucosa through small breaks and replicates as the cells differentiate. The mucosal types of HPV can be classified into low-risk and high-risk groups, based on their association with cancer. Among HPV types in high-risk group, HPV type 16 (HPV-16) is the most common, causing 50% of all cancer cases. HPV infection can occur as transient or persistent infections, based on the ability of immune system to clear the virus. Persistent infection is characterized by the integration of HPV genome. HPV-16 exhibits a different integration pattern, with only 50% reported to be integrated at the carcinoma stage. Replication of the HPV genome depends on protein E1, an ATP-dependent helicase. E1 is essential for the amplification of the viral episome in infected cells. Previous studies have shown that E1 does not only act as a helicase protein but is also involved in recruiting and interacting with other host proteins. E1 has also been deemed to drive host cell proliferation. Recent studies have emphasized the emerging role of HPV E1 in cervical carcinogenesis. In this review, a possible mechanism by which E1 drives cell proliferation and oncogenesis will be discussed.
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Affiliation(s)
- Fern Baedyananda
- Division of Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Thanayod Sasivimolrattana
- Medical Microbiology Interdisciplinary Program, Graduate School, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Applied Medical Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Arkom Chaiwongkot
- Division of Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Applied Medical Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Shankar Varadarajan
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Parvapan Bhattarakosol
- Division of Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence in Applied Medical Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- *Correspondence: Parvapan Bhattarakosol, ;
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Baedyananda F, Chaiwongkot A, Varadarajan S, Bhattarakosol P. HPV16 E1 dysregulated cellular genes involved in cell proliferation and host DNA damage: A possible role in cervical carcinogenesis. PLoS One 2021; 16:e0260841. [PMID: 34968392 PMCID: PMC8717967 DOI: 10.1371/journal.pone.0260841] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 11/17/2021] [Indexed: 12/28/2022] Open
Abstract
HPV16 is the most prominent cause of cervical cancer. HPV16 E1, a helicase required for HPV replication exhibits increased expression in association with cervical cancer progression, suggesting that E1 has a similar effect on the host as the HPV16 E6 and E7 oncoproteins. This study aimed to determine whether expression of HPV16 E1 correlated with carcinogenesis by modulating cellular pathways involved in cervical cancer. HEK293T cells were transfected with pEGFP, pEGFPE1 or truncated forms of HPV16 E1. Cell proliferation, cell death, and the impact of HPV16 E1 on host gene expression was then evaluated. HPV16 E1 overexpression resulted in a significant reduction of cell viability and cellular proliferation (p-value<0.0001). Moreover, prolonged expression of HPV16 E1 significantly induced both apoptotic and necrotic cell death, which was partially inhibited by QVD-OPH, a broad-spectrum caspase inhibitor. Microarray, real time RT-PCR and kinetic host gene expression analyses revealed that HPV16 E1 overexpression resulted in the downregulation of genes involved in protein synthesis (RPL36A), metabolism (ALDOC), cellular proliferation (CREB5, HIF1A, JMJDIC, FOXO3, NFKB1, PIK3CA, TSC22D3), DNA damage (ATR, BRCA1 and CHEK1) and immune response (ISG20) pathways. How these genetic changes contribute to HPV16 E1-mediated cervical carcinogenesis warrants further studies.
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Affiliation(s)
- Fern Baedyananda
- Applied Medical Virology Research Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Division of Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Arkom Chaiwongkot
- Applied Medical Virology Research Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Division of Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Shankar Varadarajan
- Department of Molecular and Clinical Cancer Medicine, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Parvapan Bhattarakosol
- Applied Medical Virology Research Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- Division of Virology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
- * E-mail:
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Uncovering the Role of the E1 Protein in Different Stages of Human Papillomavirus 18 Genome Replication. J Virol 2020; 94:JVI.00674-20. [PMID: 32759324 DOI: 10.1128/jvi.00674-20] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 07/22/2020] [Indexed: 12/20/2022] Open
Abstract
The life cycle of human papillomaviruses (HPVs) comprises three distinct phases of DNA replication: initial amplification, maintenance of the genome copy number at a constant level, and vegetative amplification. The viral helicase E1 is one of the factors required for the initiation of HPV genome replication. However, the functions of the E1 protein during other phases of the viral life cycle are largely uncharacterized. Here, we studied the role of the HPV18 E1 helicase in three phases of viral genome replication by downregulating E1 expression using RNA interference or inducing degradation of the E1 protein via inhibition of casein kinase 2α expression or catalytic activity. We generated a novel modified HPV18 genome expressing Nanoluc and tagged E1 and E2 proteins and created several stable HPV18-positive cell lines. We showed that, in contrast to initial amplification of the HPV18 genome, other phases of viral genome replication involve also an E1-independent mechanism. We characterize two distinct populations of HPV18 replicons existing during the maintenance and vegetative amplification phases. We show that a subset of these replicons, including viral genome monomers, replicate in an E1-dependent manner, while some oligomeric forms of the HPV18 genome replicate independently of E1 function.IMPORTANCE Human papillomavirus (HPV) infections pose serious medical problem. To date, there are no HPV-specific antivirals available due to poor understanding of the molecular mechanisms of virus infection cycle. The infection cycle of HPV involves initial amplification of the viral genomes and maintenance of the viral genomes with a constant copy number, followed by another round of viral genome amplification and new viral particle formation. The viral protein E1 is critical for the initial amplification of the viral genome. However, E1 involvement in other phases of the viral life cycle has remained controversial. In the present study, we show that at least two different replication modes of the HPV18 genome are undertaken simultaneously during the maintenance and vegetative amplification phases, i.e., replication of the majority of the HPV18 genome proceeds under the control of the host cell replication machinery without E1 function, whereas a minority of the genome replicates in an E1-dependent manner.
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Castro-Muñoz LJ, Manzo-Merino J, Muñoz-Bello JO, Olmedo-Nieva L, Cedro-Tanda A, Alfaro-Ruiz LA, Hidalgo-Miranda A, Madrid-Marina V, Lizano M. The Human Papillomavirus (HPV) E1 protein regulates the expression of cellular genes involved in immune response. Sci Rep 2019; 9:13620. [PMID: 31541186 PMCID: PMC6754496 DOI: 10.1038/s41598-019-49886-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 08/29/2019] [Indexed: 02/07/2023] Open
Abstract
The Human Papillomavirus (HPV) E1 protein is the only viral protein with enzymatic activity. The main known function of this protein is the regulation of the viral DNA replication. Nevertheless, it has been demonstrated that the ablation of HPV18 E1 mRNA in HeLa cells promotes a deregulation of several genes, particularly those involved in host defense mechanisms against viral infections; however, the specific contribution of E1 protein in HPV-independent context has not been studied. The aim of this work was to determine the effect of the HPV E1 protein in the regulation of cellular gene expression profiles evaluated through RNA-seq. We found that E1 proteins from HPV16 and 18 induced an overexpression of different set of genes associated with proliferation and differentiation processes, as well as downregulation of immune response genes, including IFNβ1 and IFNλ1 and Interferon-stimulated gene (ISG), which are important components involved in the antiviral immune response. Together, our results indicate that HR-(High-Risk) and LR-(Low-Risk) HPV E1 proteins play an important role in inhibiting the anti-viral immune response.
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Affiliation(s)
- Leonardo Josué Castro-Muñoz
- Programa de Doctorado en Ciencias Biomédicas, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Circuito Escolar S/N, Ciudad Universitaria, Delegación Coyoacán, 04500, Mexico City, Mexico
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, 14080, Mexico City, Mexico
| | - Joaquín Manzo-Merino
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, 14080, Mexico City, Mexico
- Cátedras CONACyT-Instituto Nacional de Cancerología, San Fernando No. 22, Col. Sección XVI, Tlalpan, México City, Mexico
| | - J Omar Muñoz-Bello
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, 14080, Mexico City, Mexico
| | - Leslie Olmedo-Nieva
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, 14080, Mexico City, Mexico
| | - Alberto Cedro-Tanda
- Laboratorio de Genómica del Cáncer, Instituto Nacional de Medicina Genómica, México City, Mexico
| | - Luis Alberto Alfaro-Ruiz
- Laboratorio de Genómica del Cáncer, Instituto Nacional de Medicina Genómica, México City, Mexico
| | - Alfredo Hidalgo-Miranda
- Laboratorio de Genómica del Cáncer, Instituto Nacional de Medicina Genómica, México City, Mexico
| | - Vicente Madrid-Marina
- Dirección de Infecciones Crónicas y Cáncer. Centro de Investigación sobre Enfermedades Infecciosas (CISEI), Instituto Nacional de Salud Pública, Av. Universidad 655, Santa María Ahuacatitlán, Cuernavaca, Morelos, 62100, Mexico
| | - Marcela Lizano
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología, México/Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Av. San Fernando No. 22, Col. Sección XVI, Tlalpan, 14080, Mexico City, Mexico.
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510, Ciudad de México, Mexico.
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Harel T, Peshes-Yaloz N, Bacharach E, Gat-Viks I. Predicting Phenotypic Diversity from Molecular and Genetic Data. Genetics 2019; 213:297-311. [PMID: 31352366 PMCID: PMC6727812 DOI: 10.1534/genetics.119.302463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 07/04/2019] [Indexed: 01/03/2023] Open
Abstract
Despite the importance of complex phenotypes, an in-depth understanding of the combined molecular and genetic effects on a phenotype has yet to be achieved. Here, we introduce InPhenotype, a novel computational approach for complex phenotype prediction, where gene-expression data and genotyping data are integrated to yield quantitative predictions of complex physiological traits. Unlike existing computational methods, InPhenotype makes it possible to model potential regulatory interactions between gene expression and genomic loci without compromising the continuous nature of the molecular data. We applied InPhenotype to synthetic data, exemplifying its utility for different data parameters, as well as its superiority compared to current methods in both prediction quality and the ability to detect regulatory interactions of genes and genomic loci. Finally, we show that InPhenotype can provide biological insights into both mouse and yeast datasets.
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Affiliation(s)
- Tom Harel
- School of Molecular Cell Biology and Biotechnology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801 Israe
| | - Naama Peshes-Yaloz
- School of Molecular Cell Biology and Biotechnology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801 Israe
| | - Eran Bacharach
- School of Molecular Cell Biology and Biotechnology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801 Israe
| | - Irit Gat-Viks
- School of Molecular Cell Biology and Biotechnology, The George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801 Israe
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Yao Y, Yan Z, Dai S, Li C, Yang L, Liu S, Zhang X, Shi L, Yao Y. Human Papillomavirus Type 16 E1 Mutations Associated with Cervical Cancer in a Han Chinese Population. Int J Med Sci 2019; 16:1042-1049. [PMID: 31341418 PMCID: PMC6643129 DOI: 10.7150/ijms.34279] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 05/30/2019] [Indexed: 12/20/2022] Open
Abstract
Human papillomavirus type 16 (HPV16) is a high-risk HPV type and a potent carcinogen. HPV E1 is one of the most highly conserved proteins and it plays a central role in initiating HPV DNA replication. In current study, we enrolled 161 HPV16-positive cervical cancer patients (case group) and 171 HPV16-positive asymptomatic individuals (control group) in a study to analyse the association between HPV16 E1 genetic mutations and cervical cancer. The samples of case group were cervical cancer tissues and the samples of control group were cervical exfoliated cells. Three variants (A4, A1-A3 and D3) were found in the case group, 68.3% of the HPV16 E1 sequences belonged to the A4 (As) sub-lineage, 29.2% belonged to the A1-A3 (EUR) sub-lineage, and 2.5% belonged to the D3 (AA1) sub-lineage. Two variants (A4 and A1-A3) occurred in the control group. The A4 (As) sub-lineage was predominant in this group as well (66.1%), followed by the A1-A3 (EUR) sub-lineage (33.9%), but the D3 (AA1) sub-lineage was not found in the control group. The distribution of the HPV16 variants between the case and control groups was significantly different (P<0.05). When the distribution of the HPV16 E1 gene mutations was compared, the distribution of twenty-seven mutations was significantly different between the case and control groups (P<0.05), and twenty-two mutations occurred only in the D3 (AA1) sub-lineage, two were found only in the A4 (As) sub-lineage, one was found in the A1-A3 (EUR) sub-lineage, two was found in both the A4 (As) and A1-A3 (EUR) sub-lineages. In the sub-lineage analysis, the differences in the T933A (A23A), T1014G (D50E) and G2160A (R432R) mutations were statistically significant between the case and control groups for the A4 (As) sub-lineage (P<0.05), and the differences in the T2232C (F456F), G2337A (M491I) and A2547G (P561P) mutations were statistically significant between the case and control groups for the A1-A3 (EUR) sub-lineage (P<0.05). In the current study, we describe specific mutations in the HPV16 E1 gene associated with cervical cancer, and our study will provide a good reference for further functional studies of the relationship between cervical cancer carcinogenesis and HPV genes.
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Affiliation(s)
- Yueting Yao
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
| | - Zhiling Yan
- Department of Gynaecologic Oncology, The 3rd Affiliated Hospital of Kunming Medical University, Kunming 650118, China
| | - Shuying Dai
- School of Basic Medical Science, Kunming Medical University, Kunming 650500, China
| | - Chuanyin Li
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
| | - Longyu Yang
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
| | - Shuyuan Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
| | - Xinwen Zhang
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
| | - Li Shi
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
| | - Yufeng Yao
- Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming 650118, Yunnan, China
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Baedyananda F, Chaiwongkot A, Bhattarakosol P. Elevated HPV16 E1 Expression Is Associated with Cervical Cancer Progression. Intervirology 2018; 60:171-180. [PMID: 29495005 DOI: 10.1159/000487048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 01/22/2018] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES The primary replication protein, HPV E1, has been shown to play a role in mitigating host defence and disrupting normal cell cycle processes, leading to the development of cancer. This study investigated the expression profile of HPV16 E1 in various stages of cervical cancer development and the factors that control E1 expression. METHODS One hundred and twenty-four HPV16-positive cervical samples ranging from normal to CIN 1, CIN 2/3, and SCC lesions were studied. E1 mRNA expression was determined by ddPCR. Methylation of promoters p97 and p670 was quantified by pyrosequencing, while PCR, qPCR, and sequencing were used to determine the physical state and variations of the HPV16 E1 genome. RESULTS Increased E1 mRNA expression related to disease progression (normal 0.18, CIN 1 0.41, CIN 2/3 0.65, and SCC 0.79) was demonstrated with a significant positive correlation (r = 0.661, p = 0.019). No association between physical state and E1 expression was found. Methylation of p97 and p670 promoters showed significant elevation in SCC compared to normal samples. Only 4.2% showed genomic variations of HPV16 E1 63-bp duplication. CONCLUSION E1 may play a role in cancer development. The detection of E1 mRNA and promoter methylation may be useful as cancer prognostic markers.
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Affiliation(s)
- Fern Baedyananda
- Joint PhD Program in Biomedical Sciences and Biotechnology, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Arkom Chaiwongkot
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Parvapan Bhattarakosol
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
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10
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Human papillomavirus types 16 E1 mRNA is transcribed from P14 early promoter in cervical neoplasms. Virology 2016; 488:196-201. [DOI: 10.1016/j.virol.2015.11.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 11/10/2015] [Accepted: 11/16/2015] [Indexed: 02/07/2023]
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Scomparin A, Polyak D, Krivitsky A, Satchi-Fainaro R. Achieving successful delivery of oligonucleotides--From physico-chemical characterization to in vivo evaluation. Biotechnol Adv 2015; 33:1294-309. [PMID: 25916823 DOI: 10.1016/j.biotechadv.2015.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 04/08/2015] [Accepted: 04/16/2015] [Indexed: 12/20/2022]
Abstract
RNA interference is one of the most promising fields in modern medicine to treat several diseases, ranging from cancer to cardiac diseases, passing through viral infections and metabolic pathologies. Since the discovery of the potential therapeutic properties of non-self oligonucleotides, it was clear that it is important to develop delivery systems that are able to increase plasma stability and bestow membrane-crossing abilities to the oligonucleotides in order to reach their cytoplasmic targets. Polymer therapeutics, among other systems, are widely investigated as delivery systems for therapeutic agents, such as oligonucleotides. Physico-chemical characterization of the supramolecular polyplexes obtained upon charge interaction or covalent conjugation between the polymeric carrier and the oligonucleotides is critical. Appropriate characterization is fundamental in order to predict and understand the in vivo silencing efficacy and to avoid undesired side effects and toxicity profile. Shedding light on the physico-chemical and in vitro requirements of a polyplex leads to an efficient in vivo delivery system for RNAi therapeutics. In this review, we will present the most common techniques for characterization of obtained polymer/oligonucleotide polyplexes and an up-to-date state of the art in vivo preclinical and clinical studies. This is the first review to deal with the difficulties in appropriate characterization of small interfering RNA (siRNA) or microRNA (miRNA) polyplexes and conjugates which limit the clinical translation of this promising technology.
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Affiliation(s)
- Anna Scomparin
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel
| | - Dina Polyak
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel
| | - Adva Krivitsky
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ronit Satchi-Fainaro
- Department of Physiology and Pharmacology, Sackler School of Medicine, Room 607, Tel Aviv University, Tel Aviv 69978, Israel.
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