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Yao S, Zhao L, Chen S, Wang H, Gao Y, Shao NY, Dai M, Cai H. Cervical cancer immune infiltration microenvironment identification, construction of immune scores, assisting patient prognosis and immunotherapy. Front Immunol 2023; 14:1135657. [PMID: 36969161 PMCID: PMC10037308 DOI: 10.3389/fimmu.2023.1135657] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2023] [Accepted: 03/01/2023] [Indexed: 03/12/2023] Open
Abstract
BackgroundThe immune microenvironment is of great significance in cervical cancer. However, there is still a lack of systematic research on the immune infiltration environment of cervical cancer.MethodsWe obtained cervical cancer transcriptome data and clinical information from the Cancer Genome Atlas (TCGA) and the Gene Expression Omnibus (GEO) databases, evaluated the immune microenvironment of cervical cancer, determined immune subsets, constructed an immune cell infiltration scoring system, screened key immune-related genes, and performed single-cell data analysis and cell function analysis of key genes.ResultsWe combined the TCGA and GEO data sets and obtained three different immune cell populations. We obtained two gene clusters, extracted 119 differential genes, and established an immune cell infiltration (ICI) scoring system. Finally, three key genes, IL1B, CST7, and ITGA5, were identified, and single-cell sequencing data were mined to distribute these key genes in different cell types. By up-regulating CST7 and down-regulating IL1B and ITGA5, cervical cancer cells’ proliferation ability and invasion ability were successfully reduced.ConclusionWe conducted a comprehensive assessment of the state of the tumor immune microenvironment in cervical cancer, constructed the ICI scoring system, and identified the ICI scoring system as a potential indicator of susceptibility to immunotherapy for cervical cancer, identifying key genes suggesting that IL1B, CST7, and ITGA5 play an essential role in cervical cancer.
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Affiliation(s)
- Shijie Yao
- Department of Gynecological Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, Hubei, China
- Hubei Cancer Clinical Study Center, Wuhan, Hubei, China
| | - Liyang Zhao
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Macau, Taipa, Macau, Macau SAR, China
- Ministry of Education (MoE) Frontiers Science Center for Precision Oncology, University of Macau, Taipa, Macau, Macau SAR, China
| | - Siming Chen
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Hua Wang
- Department of Gynecological Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, Hubei, China
- Hubei Cancer Clinical Study Center, Wuhan, Hubei, China
| | - Yang Gao
- Department of Gynecological Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, Hubei, China
- Hubei Cancer Clinical Study Center, Wuhan, Hubei, China
| | - Ning-Yi Shao
- Department of Biomedical Sciences, Faculty of Health Sciences, University of Macau, Taipa, Macau, Macau SAR, China
- Ministry of Education (MoE) Frontiers Science Center for Precision Oncology, University of Macau, Taipa, Macau, Macau SAR, China
- *Correspondence: Hongbing Cai, ; Mengyuan Dai, ; Ning-Yi Shao,
| | - Mengyuan Dai
- Department of Gynecological Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, Hubei, China
- Hubei Cancer Clinical Study Center, Wuhan, Hubei, China
- *Correspondence: Hongbing Cai, ; Mengyuan Dai, ; Ning-Yi Shao,
| | - Hongbing Cai
- Department of Gynecological Oncology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
- Hubei Key Laboratory of Tumor Biological Behaviors, Wuhan, Hubei, China
- Hubei Cancer Clinical Study Center, Wuhan, Hubei, China
- *Correspondence: Hongbing Cai, ; Mengyuan Dai, ; Ning-Yi Shao,
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Li Z, Xu B, Sun Y, Zhou L, Tao Y, Hou W, Bao J, Liu J, Fan W. 1α,25(OH) 2D 3(VD3) promotes Raddeanin A-induced anti-proliferative effects on HeLa cell apoptosis and autophagy through negative regulation of HPV18E6-E7/PD-L1/VDR axis. Bioengineered 2022; 13:357-369. [PMID: 34974811 PMCID: PMC8805891 DOI: 10.1080/21655979.2021.2005223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Raddeanin A (RA) has indicated suppressive effects on various human tumor cells, and insufficient vitamin D was associated with human papillomavirus (HPV) persistence and gynecological tumors. However, combined effects of RA and vitamin D on HPV-positive cells remain elusive. Herein, we aimed to investigate the combined effects of RA and 1ɑ,25(OH)2D3 (VD3) on cellular viability and modulation of HPV18E6/E7, programmed cell death 1 ligand (PD-L1) and vitamin D receptor (VDR) expression in HeLa cells in vitro. HeLa cells were treated with RA alone or VD3 combined with RA. Cell viability was measured using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT), and apoptosis was detected by flow cytometry. Real-time PCR (qRT-PCR) and Western blot were used to determine the gene/protein expression levels. The autophagosomes were observed by Transmission electron microscopy (TEM). The result showed that cell viability was inhibited by RA, and apoptosis in HeLa cells treated with RA was elevated accordingly. The expression of Bax, Cleaved-caspase-3, Cleaved-caspase-9 and Cleaved-PARP increased, and Bcl-2 decreased. The autophagy was induced by RA, as evidenced by elevated autophagosomes and the increased LC3-II/I ratio and Beclin-1. The expression of HPV18E6/E7, PD-L1 and VDR was reduced by RA. Moreover, RA combined with VD3 had a stronger effect on HeLa cells than RA alone. In conclusion, RA inhibits HeLa proliferation and induces apoptosis and autophagy via suppressing HPV18E6/E7, PD-L1 and VDR, and VD3 showed reinforced effects of RA on HeLa cells. Therefore, combined usage of VD3 with RA might be a potential novel immunotherapy strategy for HPV-related diseases.
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Affiliation(s)
- Zhiyu Li
- Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Biyun Xu
- Department of Statistics, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yuexin Sun
- Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lanbo Zhou
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yue Tao
- Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wenjun Hou
- Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jun Bao
- Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jun Liu
- Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Weixin Fan
- Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
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Kudela E, Liskova A, Samec M, Koklesova L, Holubekova V, Rokos T, Kozubik E, Pribulova T, Zhai K, Busselberg D, Kubatka P, Biringer K. The interplay between the vaginal microbiome and innate immunity in the focus of predictive, preventive, and personalized medical approach to combat HPV-induced cervical cancer. EPMA J 2021; 12:199-220. [PMID: 34194585 PMCID: PMC8192654 DOI: 10.1007/s13167-021-00244-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/04/2021] [Indexed: 12/20/2022]
Abstract
HPVs representing the most common sexually transmitted disease are a group of carcinogenic viruses with different oncogenic potential. The immune system and the vaginal microbiome represent the modifiable and important risk factors in HPV-induced carcinogenesis. HPV infection significantly increases vaginal microbiome diversity, leading to gradual increases in the abundance of anaerobic bacteria and consequently the severity of cervical dysplasia. Delineation of the exact composition of the vaginal microbiome and immune environment before HPV acquisition, during persistent/progressive infections and after clearance, provides insights into the complex mechanisms of cervical carcinogenesis. It gives hints regarding the prediction of malignant potential. Relative high HPV prevalence in the general population is a challenge for modern and personalized diagnostics and therapeutic guidelines. Identifying the dominant microbial biomarkers of high-grade and low-grade dysplasia could help us to triage the patients with marked chances of lesion regression or progression. Any unnecessary surgical treatment of cervical dysplasia could negatively affect obstetrical outcomes and sexual life. Therefore, understanding the effect and role of microbiome-based therapies is a breaking point in the conservative management of HPV-associated precanceroses. The detailed evaluation of HPV capabilities to evade immune mechanisms from various biofluids (vaginal swabs, cervicovaginal lavage/secretions, or blood) could promote the identification of new immunological targets for novel individualized diagnostics and therapy. Qualitative and quantitative assessment of local immune and microbial environment and associated risk factors constitutes the critical background for preventive, predictive, and personalized medicine that is essential for improving state-of-the-art medical care in patients with cervical precanceroses and cervical cancer. The review article focuses on the influence and potential diagnostic and therapeutic applications of the local innate immune system and the microbial markers in HPV-related cancers in the context of 3P medicine.
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Affiliation(s)
- Erik Kudela
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Alena Liskova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Marek Samec
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Lenka Koklesova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Veronika Holubekova
- Jessenius Faculty of Medicine, Biomedical Centre Martin, Comenius University in Bratislava, 03601 Martin, Slovakia
| | - Tomas Rokos
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Erik Kozubik
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Terezia Pribulova
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
| | - Kevin Zhai
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, 24144 Doha, Qatar
| | - Dietrich Busselberg
- Department of Physiology and Biophysics, Weill Cornell Medicine-Qatar, Education City, Qatar Foundation, 24144 Doha, Qatar
| | - Peter Kubatka
- Department of Medical Biology, Jessenius Faculty of Medicine, Comenius University in Bratislava, 036 01 Martin, Slovakia
- European Association for Predictive, Preventive and Personalised Medicine, EPMA, 1160 Brussels, Belgium
| | - Kamil Biringer
- Clinic of Obstetrics and Gynecology, Jessenius Faculty of Medicine, Comenius University in Bratislava, Kollarova 2, 036 01 Martin, Slovakia
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Saeed M, Faisal SM, Akhtar F, Ahmad S, Alreshidi MM, Kausar MA, Kazmi S, Saeed A, Adnan M, Ashraf GM. Human Papillomavirus Induced Cervical and Oropharyngeal Cancers: From Mechanisms to Potential Immuno-therapeutic Strategies. Curr Drug Metab 2020; 21:167-177. [DOI: 10.2174/1389200221666200421121228] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/04/2019] [Accepted: 01/30/2020] [Indexed: 01/09/2023]
Abstract
The human papillomavirus (HPV) associated infections are the hallmark of cervical and neck cancer.
Almost all the cases of cervical cancer (CC) and 70% of oropharyngeal cancer (OC) are, more or less, caused by the
persistent infection of HPV. CC is the fourth most common cancer globally, and is commenced by the persistent
infection with human papillomaviruses (HPVs), predominantly HPV types; 16 and 18. In the light of the above facts,
there is an immediate requirement to develop novel preventive and innovative therapeutic strategies that may help in
lower occurrences of HPV mediated cancers. Currently, only radiation and chemical-based therapies are the treatment
for HPV mediated neck cancer (NC) and CC. Recent advances in the field of immunotherapy are underway,
which are expected to unravel the optimal treatment strategies for the growing HPV mediated cancers. In this review,
we decipher the mechanism of pathogenesis with current immunotherapeutic advances in regressing the NC and CC,
with an emphasis on immune-therapeutic strategies being tested in clinical trials and predominantly focus on defining
the efficacy and limitations. Taken together, these immunological advances have enhanced the effectiveness of immunotherapy
and promises better treatment results in coming future.
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Affiliation(s)
- Mohd. Saeed
- Department of Biology, College of Science, University of Hail, Hail, Saudi Arabia
| | - Syed Mohd Faisal
- Molecular Immunology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Firoz Akhtar
- Department of Pharmacology and Toxicology, Higuchi Biosciences Center, University of Kansas, Lawrence, KS 2099, United States
| | - Saheem Ahmad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Mousa M. Alreshidi
- Department of Biology, College of Science, University of Hail, Hail, Saudi Arabia
| | - Mohd. Adnan Kausar
- Department of Biochemistry, College of Medicine University of Hail, Hail, Saudi Arabia
| | - Shadab Kazmi
- Molecular Immunology Laboratory, Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
| | - Amir Saeed
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Mohd. Adnan
- Department of Biology, College of Science, University of Hail, Hail, Saudi Arabia
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
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Kovachev SM. Immunotherapy in patients with local HPV infection and high-grade squamous intraepithelial lesion following uterine cervical conization. Immunopharmacol Immunotoxicol 2020; 42:314-318. [PMID: 32429720 DOI: 10.1080/08923973.2020.1765374] [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] [Indexed: 01/28/2023]
Abstract
OBJECTIVE To establish the clearance of cervical human papillomavirus (HPV) infection following postoperative immunotherapy with inosine pranobex in women receiving surgical treatment of established high-grade squamous intraepithelial lesion (HSIL) of the uterine cervix. MATERIALS AND METHODS Over the six-year study period, 32 women with cervical HPV infection following electroconization (loop electrosurgical excision procedure) of the uterine cervix for established HSIL were randomly divided into two groups: I (n = 10) without and II (n = 22) with postoperative inosine pranobex immunotherapy. Follow-up after 24 and 48 months included cervical testing for HPV persistence and after 12, 24, and 48 months with cytology and colposcopy for dysplasia relapse (confirmed histologically). RESULTS Relapse monitoring in 32 women after 12 months revealed 1 and 0 HSIL positive in groups I and II, respectively; after 24 months an additional 3 patients in each group were positive; and after 48 months an additional 3 and 1 patients were positive in groups I and II, respectively (p < .05). The groups significantly differed (p < .05) with regard to clearing the most common high-risk HPV genotypes (HPV 16 and HPV 56). CONCLUSIONS Inosine pranobex immunotherapy in HPV-positive patients following cervical conization significantly increased the clearance of viral infection with high-risk genotypes and reduced relapse of HSIL.
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Singh A, Koutsoumpli G, van de Wall S, Daemen T. An alphavirus-based therapeutic cancer vaccine: from design to clinical trial. Cancer Immunol Immunother 2019; 68:849-859. [PMID: 30465060 PMCID: PMC11028389 DOI: 10.1007/s00262-018-2276-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Accepted: 11/09/2018] [Indexed: 01/25/2023]
Abstract
Cancer immunotherapy has greatly advanced in recent years. Most immunotherapeutic strategies are based on the use of immune checkpoint blockade to unleash antitumor immune responses or on the induction or adoptive transfer of immune effector cells. We aim to develop therapeutic vaccines based on recombinant Semliki Forest virus vectors to induce tumor-specific effector immune cells. In this review, we describe our ongoing work on SFV-based vaccines targeted against human papillomavirus- and hepatitis C virus-related infections and malignancies, focusing on design, delivery, combination strategies, preclinical efficacy and product development for a first-in-man clinical trial with an HPV-specific vaccine.
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Affiliation(s)
- Amrita Singh
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, HPC EB88, PO Box 30.001, 9700RB, Groningen, The Netherlands
| | - Georgia Koutsoumpli
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, HPC EB88, PO Box 30.001, 9700RB, Groningen, The Netherlands
| | - Stephanie van de Wall
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, HPC EB88, PO Box 30.001, 9700RB, Groningen, The Netherlands
- Radiotherapy and OncoImmunology Laboratory, Department of Radiation Oncology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Toos Daemen
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, HPC EB88, PO Box 30.001, 9700RB, Groningen, The Netherlands.
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van de Wall S, Ljungberg K, Ip PP, Boerma A, Knudsen ML, Nijman HW, Liljeström P, Daemen T. Potent therapeutic efficacy of an alphavirus replicon DNA vaccine expressing human papilloma virus E6 and E7 antigens. Oncoimmunology 2018; 7:e1487913. [PMID: 30288352 PMCID: PMC6169581 DOI: 10.1080/2162402x.2018.1487913] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/06/2018] [Accepted: 06/06/2018] [Indexed: 12/22/2022] Open
Abstract
Cervical cancer develops as a result of infection with high-risk human papillomavirus (HPV) through persistent expression of early proteins E6 and E7. Our group pioneered a recombinant viral vector system based on Semliki Forest virus (SFV) for vaccination against cervical cancer. The most striking benefit of this alphavirus vector-based vaccine platform is its high potency. DNA vaccines on the other hand, have a major advantage with respect to ease of production. In this study, the benefits associated with both SFV-based vaccines and DNA vaccines were combined with the development of a DNA-launched RNA replicon (DREP) vaccine targeting cervical cancer. Using intradermal delivery followed by electroporation, we demonstrated that DREP encoding for E6,7 (DREP-E6,7) induced effective, therapeutic antitumor immunity. While immunizations with a conventional DNA vaccine did not prevent tumor outgrowth, immunization with a 200-fold lower equimolar dose of DREP (0.05 µg of DREP) resulted in approximately 85% of tumor-free mice. To overcome the safety concern of potential malignant transformation at the vaccination site, we evaluated the anti-tumor effect of a DREP vaccine encoding a shuffled version of E7 (DREP-E7sh). DREP-E7sh delayed tumor growth yet not to the same extent as DREP-E6,7. In addition, inclusion of a helper cassette and an ER targeting signal (sigHelp) did not significantly further enhance the suppression of tumor outgrowth in the long term, albeit exhibiting better tumor control early after immunization. Collectively, this study points towards the clinical evaluation of DREP encoding HPV antigens as a potent immunotherapy for patients with HPV16 (pre)-malignancies.
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Affiliation(s)
- Stephanie van de Wall
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.,Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Karl Ljungberg
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Peng Peng Ip
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Annemarie Boerma
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Maria L Knudsen
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Hans W Nijman
- Department of Obstetrics & Gynecology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Peter Liljeström
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Toos Daemen
- Department of Medical Microbiology, Tumor Virology and Cancer Immunotherapy, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Shanmugasundaram S, You J. Targeting Persistent Human Papillomavirus Infection. Viruses 2017; 9:v9080229. [PMID: 28820433 PMCID: PMC5580486 DOI: 10.3390/v9080229] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 07/30/2017] [Accepted: 08/15/2017] [Indexed: 12/14/2022] Open
Abstract
While the majority of Human papillomavirus (HPV) infections are transient and cleared within a couple of years following exposure, 10-20% of infections persist latently, leading to disease progression and, ultimately, various forms of invasive cancer. Despite the clinical efficiency of recently developed multivalent prophylactic HPV vaccines, these preventive measures are not effective against pre-existing infection. Additionally, considering that the burden associated with HPV is greatest in regions with limited access to preventative vaccination, the development of effective therapies targeting persistent infection remains imperative. This review discusses not only the mechanisms underlying persistent HPV infection, but also the promise of immunomodulatory therapeutic vaccines and small-molecular inhibitors, which aim to augment the host immune response against the viral infection as well as obstruct critical viral-host interactions.
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Affiliation(s)
- Srinidhi Shanmugasundaram
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
| | - Jianxin You
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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Interferon α Induces the Apoptosis of Cervical Cancer HeLa Cells by Activating both the Intrinsic Mitochondrial Pathway and Endoplasmic Reticulum Stress-Induced Pathway. Int J Mol Sci 2016; 17:ijms17111832. [PMID: 27827850 PMCID: PMC5133833 DOI: 10.3390/ijms17111832] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/14/2016] [Accepted: 10/27/2016] [Indexed: 02/02/2023] Open
Abstract
The interferon α (IFN-α) has been often used as a sensitizing agent for the treatment of various malignancies such as hepatocellular carcinoma, malignant melanoma, and renal cell cancer by promoting the apoptosis of thesetumor cell types. However, the effect of IFN-α on cervical cancer remains unknown. In this study, HeLa cells were used as a testing model for the treatment of IFN-α on cervical cancer. The results indicate that IFN-α markedly inhibits the proliferation and induces the apoptosis of HeLa cells. The activation of caspase 3, the up-regulation of both Bim and cleaved poly (ADP-ribose) polymerase (PARP) 1, the down-regulation of Bcl-xL, as well as the release of cytochrome c from mitochondria were significantly induced upon IFN-α treatment, indicating that the intrinsic apoptotic pathway could be activated by IFN-α treatment. In addition, caspase 4—which is involved in the endoplasmic reticulum (ER) stress-induced apoptosis—was activated in response to IFN-α treatment. Knocking down caspase 4 by small interfering RNA (siRNA) markedly reduced the IFN-α-mediated cell apoptosis. However, no significant changes in the expressions of caspases 8 and 10 were observed upon IFN-α treatment, indicating that the apoptosis caused by IFN-α might be independent of the extrinsic apoptotic pathway. These findings suggest that IFN-α may possess anti-cervical cancer capacity by activating cell apoptosis via the intrinsic mitochondrial pathway and caspase-4-related ER stress-induced pathway.
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Therapeutic Vaccine Strategies against Human Papillomavirus. Vaccines (Basel) 2014; 2:422-62. [PMID: 26344626 PMCID: PMC4494257 DOI: 10.3390/vaccines2020422] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 05/16/2014] [Accepted: 05/27/2014] [Indexed: 12/14/2022] Open
Abstract
High-risk types of human papillomavirus (HPV) cause over 500,000 cervical, anogenital and oropharyngeal cancer cases per year. The transforming potential of HPVs is mediated by viral oncoproteins. These are essential for the induction and maintenance of the malignant phenotype. Thus, HPV-mediated malignancies pose the unique opportunity in cancer vaccination to target immunologically foreign epitopes. Therapeutic HPV vaccination is therefore an ideal scenario for proof-of-concept studies of cancer immunotherapy. This is reflected by the fact that a multitude of approaches has been utilized in therapeutic HPV vaccination design: protein and peptide vaccination, DNA vaccination, nanoparticle- and cell-based vaccines, and live viral and bacterial vectors. This review provides a comprehensive overview of completed and ongoing clinical trials in therapeutic HPV vaccination (summarized in tables), and also highlights selected promising preclinical studies. Special emphasis is given to adjuvant science and the potential impact of novel developments in vaccinology research, such as combination therapies to overcome tumor immune suppression, the use of novel materials and mouse models, as well as systems vaccinology and immunogenetics approaches.
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