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Jones KM, Bryan A, McCunn E, Lantz PE, Blalock H, Ojeda IC, Mehta K, Cosper PF. The Causes and Consequences of DNA Damage and Chromosomal Instability Induced by Human Papillomavirus. Cancers (Basel) 2024; 16:1662. [PMID: 38730612 PMCID: PMC11083350 DOI: 10.3390/cancers16091662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/18/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024] Open
Abstract
High-risk human papillomaviruses (HPVs) are the main cause of cervical, oropharyngeal, and anogenital cancers, which are all treated with definitive chemoradiation therapy when locally advanced. HPV proteins are known to exploit the host DNA damage response to enable viral replication and the epithelial differentiation protocol. This has far-reaching consequences for the host genome, as the DNA damage response is critical for the maintenance of genomic stability. HPV+ cells therefore have increased DNA damage, leading to widespread genomic instability, a hallmark of cancer, which can contribute to tumorigenesis. Following transformation, high-risk HPV oncoproteins induce chromosomal instability, or chromosome missegregation during mitosis, which is associated with a further increase in DNA damage, particularly due to micronuclei and double-strand break formation. Thus, HPV induces significant DNA damage and activation of the DNA damage response in multiple contexts, which likely affects radiation sensitivity and efficacy. Here, we review how HPV activates the DNA damage response, how it induces chromosome missegregation and micronuclei formation, and discuss how these factors may affect radiation response. Understanding how HPV affects the DNA damage response in the context of radiation therapy may help determine potential mechanisms to improve therapeutic response.
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Affiliation(s)
- Kathryn M. Jones
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
| | - Ava Bryan
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
| | - Emily McCunn
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
| | - Pate E. Lantz
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
| | - Hunter Blalock
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
- University of Wisconsin School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
| | - Isabel C. Ojeda
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
- University of Wisconsin School of Medicine and Public Health, University of Wisconsin, Madison, WI 53705, USA
| | - Kavi Mehta
- Department of Comparative Biosciences, University of Wisconsin, Madison, WI 53705, USA
- Carbone Cancer Center, University of Wisconsin, Madison, WI 53705, USA
| | - Pippa F. Cosper
- Department of Human Oncology, University of Wisconsin, Madison, WI 53705, USA
- Carbone Cancer Center, University of Wisconsin, Madison, WI 53705, USA
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Wendel S, Wallace NA. Interactions among human papillomavirus proteins and host DNA repair factors differ during the viral life cycle and virus-induced tumorigenesis. mSphere 2023; 8:e0042723. [PMID: 37850786 PMCID: PMC10732048 DOI: 10.1128/msphere.00427-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023] Open
Abstract
This review focuses on the impact of human papillomavirus (HPV) oncogenes on DNA repair pathways with a particular focus on how these relationships change as productive HPV infections transition to malignant lesions. We made specific efforts to incorporate advances in the understanding of HPV and DNA damage repair over the last 4 years. We apologize for any articles that we missed in compiling this report.
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Affiliation(s)
- Sebastian Wendel
- Kansas State University, Division of Biology, Manhattan, Kansas, USA
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3
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Ye J, Zheng L, He Y, Qi X. Human papillomavirus associated cervical lesion: pathogenesis and therapeutic interventions. MedComm (Beijing) 2023; 4:e368. [PMID: 37719443 PMCID: PMC10501338 DOI: 10.1002/mco2.368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 08/20/2023] [Accepted: 08/22/2023] [Indexed: 09/19/2023] Open
Abstract
Human papillomavirus (HPV) is the most prevalent sexually transmitted virus globally. Persistent high-risk HPV infection can result in cervical precancerous lesions and cervical cancer, with 70% of cervical cancer cases associated with high-risk types HPV16 and 18. HPV infection imposes a significant financial and psychological burden. Therefore, studying methods to eradicate HPV infection and halt the progression of precancerous lesions remains crucial. This review comprehensively explores the mechanisms underlying HPV-related cervical lesions, including the viral life cycle, immune factors, epithelial cell malignant transformation, and host and environmental contributing factors. Additionally, we provide a comprehensive overview of treatment methods for HPV-related cervical precancerous lesions and cervical cancer. Our focus is on immunotherapy, encompassing HPV therapeutic vaccines, immune checkpoint inhibitors, and advanced adoptive T cell therapy. Furthermore, we summarize the commonly employed drugs and other nonsurgical treatments currently utilized in clinical practice for managing HPV infection and associated cervical lesions. Gene editing technology is currently undergoing clinical research and, although not yet employed officially in clinical treatment of cervical lesions, numerous preclinical studies have substantiated its efficacy. Therefore, it holds promise as a precise treatment strategy for HPV-related cervical lesions.
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Affiliation(s)
- Jiatian Ye
- Department of Gynecology and ObstetricsKey Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second Hospital, Sichuan UniversityChengduChina
| | - Lan Zheng
- Department of Pathology and Lab MedicineUniversity of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | - Yuedong He
- Department of Gynecology and ObstetricsKey Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second Hospital, Sichuan UniversityChengduChina
| | - Xiaorong Qi
- Department of Gynecology and ObstetricsKey Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second Hospital, Sichuan UniversityChengduChina
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Sheng B, Wang W, Xia D, Qu X. Panobinostat (LBH589) combined with AM1241 induces cervical cancer cell apoptosis through autophagy pathway. BMC Pharmacol Toxicol 2023; 24:45. [PMID: 37740231 PMCID: PMC10517494 DOI: 10.1186/s40360-023-00686-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023] Open
Abstract
PURPOSE The study aims to investigate the apoptotic effects of combining LBH589 and AM1241 (a selective CB2 receptor agonist) on cervical cancer cells and elucidating the mechanism of this combined therapy, which may provide innovative strategies for treating this disease. METHODS The viability of the cervical cancer cells was measured by cell counting kit-8 (CCK-8) assay, and the synergistic effect was analyzed using SynergyFinder. Cell proliferation was tested by cell cloning. The apoptosis and reactive oxygen species (ROS) production in cervical cancer cells were analyzed by flow cytometry. Western blot and quantitative real-time PCR (qRT-PCR) were employed to determine changes in protein and gene levels of pathway-related factors. RESULTS By the results of cytotoxicity assay, SiHa cells were selected and treated with 0.1 μM LBH589 and 4 μM AM1241 for 24 h for subsequent experiments. The combination of both was synergistic as determined by bliss, ZIP, HSA and LOEWE synergy score. Plate cloning results showed that LBH589 combined with AM1241 inhibited the proliferation of cervical cancer cells compared to individual drug. Additionally, compared with LBH589 alone, the combination of LBH589 and AM1241 induced autophagy by increasing LC3II/LC3I and decreasing P62/GAPDH, leading to a significantly higher rate of apoptosis. Pharmacological inhibition of also inhibited apoptosis. Consistently, we found that the endoplasmic reticulum, DNA damage repair pathway were induced after co-administration. Furthermore, cellular ROS increased after co-administration, and apoptosis was inhibited by the addition of ROS scavenger. CONCLUSION LBH589 combined with AM1241 activated the endoplasmic reticulum emergency pathway, DNA damage repair signaling pathway, oxidative stress and autophagy pathway, ultimately promoting the apoptosis of cervical cancer cells. These findings suggest that the co-administration of LBH589 and AM1241 may be a new treatment plan for the treatment of cervical cancer.
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Affiliation(s)
- Bo Sheng
- Department of Obstetrics and Gynecology, Taizhou Central Hospital, Taizhou University Hospital, 999 Donghai Avenue, High-Tech Zone, Taizhou, 318000, China
| | - Wenwen Wang
- Department of Hematology and Oncology, Taizhou Central Hospital, Taizhou University Hospital, Taizhou, 318000, China
| | - Dongyue Xia
- Department of Obstetrics and Gynecology, Taizhou Central Hospital, Taizhou University Hospital, 999 Donghai Avenue, High-Tech Zone, Taizhou, 318000, China
| | - Xiangdong Qu
- Department of Obstetrics and Gynecology, Taizhou Central Hospital, Taizhou University Hospital, 999 Donghai Avenue, High-Tech Zone, Taizhou, 318000, China.
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The Drivers, Mechanisms, and Consequences of Genome Instability in HPV-Driven Cancers. Cancers (Basel) 2022; 14:cancers14194623. [PMID: 36230545 PMCID: PMC9564061 DOI: 10.3390/cancers14194623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/17/2022] [Accepted: 09/19/2022] [Indexed: 11/28/2022] Open
Abstract
Simple Summary Cells infected with high-risk human papillomaviruses (HPV) can accumulate DNA damage and eventually transform into HPV-driven cancers. Genome instability, or the progressive accumulation of DNA alterations (e.g., mutations), in HPV-infected cells is directly induced by the HPV genes and indirectly promoted by HPV infection through the consequences of chronic infection maintenance, increased cell growth, and accumulation of damaging mutations in genes that themselves affect genome instability. While the HPV genome typically exists as a separate entity within cells, genome instability increases the chances of HPV integrating within the host (human) genome, which is common in HPV-induced cancers. The DNA regions surrounding HPV integrations are unstable and can undergo complex alterations that affect both human and HPV genes. This review discusses HPV-dependent and -independent drivers and mechanisms of genome instability in HPV-driven cancers, both globally and around sites of HPV integration, and describes the changes induced in the tumour genome. Abstract Human papillomavirus (HPV) is the causative driver of cervical cancer and a contributing risk factor of head and neck cancer and several anogenital cancers. HPV’s ability to induce genome instability contributes to its oncogenicity. HPV genes can induce genome instability in several ways, including modulating the cell cycle to favour proliferation, interacting with DNA damage repair pathways to bring high-fidelity repair pathways to viral episomes and away from the host genome, inducing DNA-damaging oxidative stress, and altering the length of telomeres. In addition, the presence of a chronic viral infection can lead to immune responses that also cause genome instability of the infected tissue. The HPV genome can become integrated into the host genome during HPV-induced tumorigenesis. Viral integration requires double-stranded breaks on the DNA; therefore, regions around the integration event are prone to structural alterations and themselves are targets of genome instability. In this review, we present the mechanisms by which HPV-dependent and -independent genome instability is initiated and maintained in HPV-driven cancers, both across the genome and at regions of HPV integration.
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Fenton TR. Accumulation of host cell genetic errors following high-risk HPV infection. Curr Opin Virol 2021; 51:1-8. [PMID: 34543805 DOI: 10.1016/j.coviro.2021.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 08/31/2021] [Accepted: 09/03/2021] [Indexed: 12/19/2022]
Affiliation(s)
- Tim R Fenton
- School of Biosciences, Division of Natural Sciences, University of Kent, Canterbury, UK; School of Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, UK.
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Kono T, Laimins L. Genomic Instability and DNA Damage Repair Pathways Induced by Human Papillomaviruses. Viruses 2021; 13:1821. [PMID: 34578402 PMCID: PMC8472259 DOI: 10.3390/v13091821] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/29/2021] [Accepted: 09/08/2021] [Indexed: 12/22/2022] Open
Abstract
Human papillomaviruses (HPV) are the causative agents of cervical and other anogenital cancers as well as those of the oropharynx. HPV proteins activate host DNA damage repair factors to promote their viral life cycle in stratified epithelia. Activation of both the ATR pathway and the ATM pathway are essential for viral replication and differentiation-dependent genome amplification. These pathways are also important for maintaining host genomic integrity and their dysregulation or mutation is often seen in human cancers. The APOBEC3 family of cytidine deaminases are innate immune factors that are increased in HPV positive cells leading to the accumulation of TpC mutations in cellular DNAs that contribute to malignant progression. The activation of DNA damage repair factors may corelate with expression of APOBEC3 in HPV positive cells. These pathways may actively drive tumor development implicating/suggesting DNA damage repair factors and APOBEC3 as possible therapeutic targets.
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Affiliation(s)
- Takeyuki Kono
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA;
- Department of Otolaryngology Head and Neck Surgery, School of Medicine, Keio University, Tokyo 1608582, Japan
| | - Laimonis Laimins
- Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA;
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Cosper PF, Bradley S, Luo L, Kimple RJ. Biology of HPV Mediated Carcinogenesis and Tumor Progression. Semin Radiat Oncol 2021; 31:265-273. [PMID: 34455982 DOI: 10.1016/j.semradonc.2021.02.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Human papillomavirus (HPV) is a ubiquitous DNA virus that infects squamous epithelia. Though HPV only encodes 8 genes, it is capable of causing cellular transformation and ultimately cancer in host cells. In this article we review the classification of HPV viruses, their genetic structure and life cycle, viral gene biology, and provide an overview of the role of HPV in cancer. We explain how the viral life cycle can lead to integration of viral DNA into the host genome leading to increased cell cycle progression, decreased apoptosis, altered DNA repair, and chromosomal instability. We describe the multifaceted roles of the canonical oncogenes E6 and E7 in promoting tumorigenesis and the important role of other viral genes in regulating cancer development. We also review how the virus actively suppresses innate and adaptive immunity to evade immune detection and promote a pro-tumorigenic microenvironment. The biology presented here will serve as a foundation to the other chapters in this edition and we hope it will incite enthusiasm for continued research on this fascinating virus that causes significant morbidity and mortality worldwide.
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Affiliation(s)
- Pippa F Cosper
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, Madison, WI; University of Wisconsin School of Medicine and Public Health, Madison, WI.
| | - Samantha Bradley
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Lexi Luo
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, Madison, WI
| | - Randall J Kimple
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, Madison, WI; University of Wisconsin School of Medicine and Public Health, Madison, WI.
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Medda A, Duca D, Chiocca S. Human Papillomavirus and Cellular Pathways: Hits and Targets. Pathogens 2021; 10:262. [PMID: 33668730 PMCID: PMC7996217 DOI: 10.3390/pathogens10030262] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/08/2021] [Accepted: 02/19/2021] [Indexed: 12/18/2022] Open
Abstract
The Human Papillomavirus (HPV) is the causative agent of different kinds of tumors, including cervical cancers, non-melanoma skin cancers, anogenital cancers, and head and neck cancers. Despite the vaccination campaigns implemented over the last decades, we are far from eradicating HPV-driven malignancies. Moreover, the lack of targeted therapies to tackle HPV-related tumors exacerbates this problem. Biomarkers for early detection of the pathology and more tailored therapeutic approaches are needed, and a complete understanding of HPV-driven tumorigenesis is essential to reach this goal. In this review, we overview the molecular pathways implicated in HPV infection and carcinogenesis, emphasizing the potential targets for new therapeutic strategies as well as new biomarkers.
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Affiliation(s)
| | | | - Susanna Chiocca
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, 20139 Milan, Italy; (A.M.); (D.D.)
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Dudea-Simon M, Mihu D, Irimie A, Cojocneanu R, Korban SS, Oprean R, Braicu C, Berindan-Neagoe I. Identification of Core Genes Involved in the Progression of Cervical Cancer Using an Integrative mRNA Analysis. Int J Mol Sci 2020; 21:ijms21197323. [PMID: 33023042 PMCID: PMC7583959 DOI: 10.3390/ijms21197323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 09/28/2020] [Accepted: 10/01/2020] [Indexed: 02/06/2023] Open
Abstract
In spite of being a preventable disease, cervical cancer (CC) remains at high incidence, and it has a significant mortality rate. Although hijacking of the host cellular pathway is fundamental for developing a better understanding of the human papillomavirus (HPV) pathogenesis, a major obstacle is identifying the central molecular targets involved in HPV-driven CC. The aim of this study is to investigate transcriptomic patterns of HPV-infected and normal tissues to identify novel prognostic markers. Analyses of functional enrichment and interaction networks reveal that altered genes are mainly involved in cell cycle, DNA damage, and regulated cell-to-cell signaling. Analysis of The Cancer Genome Atlas (TCGA) data has suggested that patients with unfavorable prognostics are more likely to have DNA repair defects attributed, in most cases, to the presence of HPV. However, further studies are needed to fully unravel the molecular mechanisms of such genes involved in CC.
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Affiliation(s)
- Marina Dudea-Simon
- 2nd Obstetrics and Gynecology Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (M.D.-S.); (D.M.)
| | - Dan Mihu
- 2nd Obstetrics and Gynecology Department, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania; (M.D.-S.); (D.M.)
| | - Alexandru Irimie
- Department of Surgery, “Prof. Dr. Ion Chiricuta” Oncology Institute, 400015 Cluj-Napoca, Romania;
- Department of Surgical Oncology and Gynecological Oncology, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania
| | - Roxana Cojocneanu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 400337 Cluj-Napoca, Romania; (R.C.); (I.B.-N.)
| | - Schuyler S. Korban
- Department of Natural and Environmental Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
| | - Radu Oprean
- Analytical Chemistry Department, Iuliu Hatieganu University of Medicine and Pharmacy, 4, Louis Pasteur Street, 400349 Cluj-Napoca, Romania;
| | - Cornelia Braicu
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 400337 Cluj-Napoca, Romania; (R.C.); (I.B.-N.)
- Correspondence:
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics, Biomedicine and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 400337 Cluj-Napoca, Romania; (R.C.); (I.B.-N.)
- Department of Functional Genomics and Experimental Pathology, “Prof. Dr. Ion Chiricuţă” Oncology Institute, 34-36 Republicii Street, 400015 Cluj-Napoca, Romania
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Kono T, Hoover P, Poropatich K, Paunesku T, Mittal BB, Samant S, Laimins LA. Activation of DNA damage repair factors in HPV positive oropharyngeal cancers. Virology 2020; 547:27-34. [PMID: 32560902 PMCID: PMC7333731 DOI: 10.1016/j.virol.2020.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/12/2020] [Accepted: 05/12/2020] [Indexed: 02/07/2023]
Abstract
The mechanisms regulating viral pathogenesis of human papillomavirus (HPV) associated oropharyngeal squamous cell cancers (OPSCC) are not well understood. In the cervix, activation of DNA damage repair pathways is critical for viral replication but little is known about their role in OPSCC. APOBEC factors have been shown to be increased in OPSCC but the significance of this is unclear. We therefore examined activation of DNA damage and APOBEC factors in HPV-induced OPSCC. Our studies show significantly increased levels of pCHK1, FANCD2, BRCA1, RAD51, pSMC1 and γH2AX foci in HPV-positive samples as compared to HPV-negative while the ATM effector kinase, pCHK2, was not increased. Similar differences were observed when the levels of proteins were examined in OPSCC cell lines. In contrast, the levels of APOBEC3B and 3A were found to be similar in both HPV-positive and -negative OPSCC. Our studies suggest members of ATR pathway and FANCD2 may be important in HPV-induced OPSCC.
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Affiliation(s)
- Takeyuki Kono
- Department of Microbiology-Immunology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Paul Hoover
- Department of Microbiology-Immunology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Kate Poropatich
- Department of Pathology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Tatjana Paunesku
- Department of Radiation Oncology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Bharat B Mittal
- Department of Radiation Oncology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA
| | - Sandeep Samant
- Department of Otolaryngology Head and Neck Surgery, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Laimonis A Laimins
- Department of Microbiology-Immunology, Northwestern University, Feinberg School of Medicine, Chicago, IL, 60611, USA.
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Wallace NA. Catching HPV in the Homologous Recombination Cookie Jar. Trends Microbiol 2019; 28:191-201. [PMID: 31744663 DOI: 10.1016/j.tim.2019.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/14/2019] [Accepted: 10/17/2019] [Indexed: 12/27/2022]
Abstract
To replicate, the human papillomaviruses (HPVs) that cause anogenital and oropharyngeal malignancies must simultaneously activate DNA repair pathways and avoid the cell cycle arrest that normally accompanies DNA repair. For years it seemed that HPV oncogenes activated the homologous recombination pathway to facilitate the HPV lifecycle. However, recent developments show that, although homologous recombination gene expression and markers of pathway activation are increased, homologous recombination itself is attenuated. This review provides an overview of the diverse ways that HPV oncogenes manipulate homologous recombination and ideas on how the resulting dysregulation and inhibition offer opportunities for improved therapies and biomarkers.
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