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García A, Maldonado G, Hernández G. Translational control of papillomavirus mRNAs in the spotlight. Trends Cell Biol 2024:S0962-8924(24)00139-9. [PMID: 39069439 DOI: 10.1016/j.tcb.2024.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/25/2024] [Accepted: 07/01/2024] [Indexed: 07/30/2024]
Abstract
High-risk human papillomaviruses (HPVs) cause most cases of cervical cancer, a disease with an increasing impact worldwide. Recent studies have shown that the synthesis of viral oncoproteins is strongly subject to translational control. Thus, targeting the protein synthesis machinery might open novel avenues to develop innovative therapies aiming to improve patients' survival.
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Affiliation(s)
- Alejandra García
- mRNA and Cancer Laboratory, Unit of Biomedical Research on Cancer, National Institute of Cancer (INCan), Mexico City 14080, Mexico
| | - Giovanna Maldonado
- mRNA and Cancer Laboratory, Unit of Biomedical Research on Cancer, National Institute of Cancer (INCan), Mexico City 14080, Mexico
| | - Greco Hernández
- mRNA and Cancer Laboratory, Unit of Biomedical Research on Cancer, National Institute of Cancer (INCan), Mexico City 14080, Mexico; School of Medicine and Health Sciences, Tecnológico de Monterrey, C.P. 14380-Mexico City, Mexico.
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2
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Zhang TQ, Lv QY, Jin WL. The cellular-centered view of hypoxia tumor microenvironment: Molecular mechanisms and therapeutic interventions. Biochim Biophys Acta Rev Cancer 2024; 1879:189137. [PMID: 38880161 DOI: 10.1016/j.bbcan.2024.189137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 06/01/2024] [Accepted: 06/10/2024] [Indexed: 06/18/2024]
Abstract
Cancer is a profoundly dynamic, heterogeneous and aggressive systemic ailment, with a coordinated evolution of various types of tumor niches. Hypoxia plays an indispensable role in the tumor micro-ecosystem, drastically enhancing the plasticity of cancer cells, fibroblasts and immune cells and orchestrating intercellular communication. Hypoxia-induced signals, particularly hypoxia-inducible factor-1α (HIF-1α), drive the reprogramming of genetic, transcriptional, and proteomic profiles. This leads to a spectrum of interconnected processes, including augmented survival of cancer cells, evasion of immune surveillance, metabolic reprogramming, remodeling of the extracellular matrix, and the development of resistance to conventional therapeutic modalities like radiotherapy and chemotherapy. Here, we summarize the latest research on the multifaceted effects of hypoxia, where a multitude of cellular and non-cellular elements crosstalk with each other and co-evolve in a synergistic manner. Additionally, we investigate therapeutic approaches targeting hypoxic niche, encompassing hypoxia-activated prodrugs, HIF inhibitors, nanomedicines, and combination therapies. Finally, we discuss some of the issues to be addressed and highlight the potential of emerging technologies in the treatment of cancer.
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Affiliation(s)
- Tian-Qi Zhang
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China; The Second Hospital of Jilin University, Changchun 130041, China
| | - Qian-Yu Lv
- The Second Hospital of Jilin University, Changchun 130041, China
| | - Wei-Lin Jin
- Institute of Cancer Neuroscience, Medical Frontier Innovation Research Center, The First Hospital of Lanzhou University, The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China.
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3
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Heber N, Kuhn BJ, Strobel TD, Lohrey C, Krijgsveld J, Hoppe-Seyler K, Hoppe-Seyler F. The impact of cycling hypoxia on the phenotype of HPV-positive cervical cancer cells. J Med Virol 2023; 95:e29280. [PMID: 38054507 DOI: 10.1002/jmv.29280] [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: 08/30/2023] [Revised: 11/16/2023] [Accepted: 11/18/2023] [Indexed: 12/07/2023]
Abstract
Cycling hypoxia (cycH) is a prevalent form of tumor hypoxia that is characterized by exposure of tumor cells to recurrent phases of hypoxia and reoxygenation. CycH has been associated with a particularly aggressive cellular phenotype of tumor cells and increased therapy resistance. By performing comparative analyses under normoxia, physoxia, chronic hypoxia, and cycH, we here uncover distinct effects of cycH on the phenotype of human papillomavirus (HPV)-positive cervical cancer cells. We show that-other than under chronic hypoxia-viral E6/E7 oncogene expression is largely maintained under cycH as is the E6/E7-dependent regulation of p53 and retinoblastoma protein. Further, cycH enables HPV-positive cancer cells to evade prosenescent chemotherapy, similar to chronic hypoxia. Moreover, cells under cycH exhibit a particularly pronounced resistance to the proapoptotic effects of Cisplatin. Quantitative proteome analyses reveal that cycH induces a unique proteomic signature in cervical cancer cells, which includes a significant downregulation of luminal lysosomal proteins. These encompass the potentially proapoptotic cathepsins B and cathepsin L, which, however, appear not to affect the response to Cisplatin under any of the O2 conditions tested. Rather, we show that the proapoptotic Caspase 8/BH3-interacting domain death agonist (BID) cascade plays a pivotal role for the efficiency of Cisplatin-induced apoptosis in HPV-positive cancer cells under all investigated O2 conditions. In addition, we provide evidence that BID activation by Cisplatin is impaired under cycH, which could contribute to the high resistance to the proapoptotic effects of Cisplatin. Collectively, this study provides the first insights into the profound phenotypic alterations induced by cycH in HPV-positive cancer cells, with implications for their therapeutic susceptibility.
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Affiliation(s)
- Nora Heber
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Bianca J Kuhn
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
- Division of Proteomics of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tobias D Strobel
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Claudia Lohrey
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jeroen Krijgsveld
- Division of Proteomics of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Medical Faculty, Heidelberg University, Heidelberg, Germany
| | - Karin Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Felix Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Montoya-Gómez A, Tonello F, Spolaore B, Massimino ML, Montealegre-Sánchez L, Castillo A, Rivera Franco N, Sevilla-Sánchez MJ, Solano-Redondo LM, Mosquera-Escudero M, Jiménez-Charris E. Pllans-II: Unveiling the Action Mechanism of a Promising Chemotherapeutic Agent Targeting Cervical Cancer Cell Adhesion and Survival Pathways. Cells 2023; 12:2715. [PMID: 38067143 PMCID: PMC10705806 DOI: 10.3390/cells12232715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 10/12/2023] [Accepted: 10/18/2023] [Indexed: 12/18/2023] Open
Abstract
Despite advances in chemotherapeutic drugs used against cervical cancer, available chemotherapy treatments adversely affect the patient's quality of life. For this reason, new molecules from natural sources with antitumor potential and few side effects are required. In previous research, Pllans-II, a phospholipase A2 type-Asp49 from Porthidium lansbergii lansbergii snake venom, has shown selective attack against the HeLa and Ca Ski cervical cancer cell lines. This work suggests that the cytotoxic effect generated by Pllans-II on HeLa cells is triggered without affecting the integrity of the cytoplasmic membrane or depolarizing the mitochondrial membranes. The results allow us to establish that cell death in HeLa is related to the junction blockage between α5β1 integrins and fibronectin of the extracellular matrix. Pllans-II reduces the cells' ability of adhesion and affects survival and proliferation pathways mediated by intracellular communication with the external environment. Our findings confirmed Pllans-II as a potential prototype for developing a selective chemotherapeutic drug against cervical cancer.
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Affiliation(s)
- Alejandro Montoya-Gómez
- Grupo de Nutrición, Facultad de Salud, Universidad del Valle, Cali 760043, Colombia; (L.M.-S.); (M.J.S.-S.); (L.M.S.-R.); (M.M.-E.)
| | - Fiorella Tonello
- Istituto di Neuroscienze, CNR, Via Ugo Bassi 58/B, 35131 Padova, Italy; (F.T.); (M.L.M.)
| | - Barbara Spolaore
- Dipartimento di Scienze del Farmaco, Università di Padova, Via F. Marzolo 5, 35131 Padova, Italy;
| | - Maria Lina Massimino
- Istituto di Neuroscienze, CNR, Via Ugo Bassi 58/B, 35131 Padova, Italy; (F.T.); (M.L.M.)
| | - Leonel Montealegre-Sánchez
- Grupo de Nutrición, Facultad de Salud, Universidad del Valle, Cali 760043, Colombia; (L.M.-S.); (M.J.S.-S.); (L.M.S.-R.); (M.M.-E.)
- Grupo de Investigación en Ingeniería Biomédica-GBIO, Universidad Autónoma de Occidente, Cali 760030, Colombia
| | - Andrés Castillo
- TAO-Lab, Centre for Bioinformatics and Photonics-CIBioFi, Department of Biology, Universidad del Valle, Cali 760032, Colombia; (A.C.); (N.R.F.)
| | - Nelson Rivera Franco
- TAO-Lab, Centre for Bioinformatics and Photonics-CIBioFi, Department of Biology, Universidad del Valle, Cali 760032, Colombia; (A.C.); (N.R.F.)
| | - María José Sevilla-Sánchez
- Grupo de Nutrición, Facultad de Salud, Universidad del Valle, Cali 760043, Colombia; (L.M.-S.); (M.J.S.-S.); (L.M.S.-R.); (M.M.-E.)
| | - Luis Manuel Solano-Redondo
- Grupo de Nutrición, Facultad de Salud, Universidad del Valle, Cali 760043, Colombia; (L.M.-S.); (M.J.S.-S.); (L.M.S.-R.); (M.M.-E.)
| | - Mildrey Mosquera-Escudero
- Grupo de Nutrición, Facultad de Salud, Universidad del Valle, Cali 760043, Colombia; (L.M.-S.); (M.J.S.-S.); (L.M.S.-R.); (M.M.-E.)
| | - Eliécer Jiménez-Charris
- Grupo de Nutrición, Facultad de Salud, Universidad del Valle, Cali 760043, Colombia; (L.M.-S.); (M.J.S.-S.); (L.M.S.-R.); (M.M.-E.)
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Strobel TD, Weber M, Heber N, Holzer A, Hoppe-Seyler K, Hoppe-Seyler F. Revisiting the role of endogenous STAT3 in HPV-positive cervical cancer cells. J Med Virol 2023; 95:e29230. [PMID: 38009614 DOI: 10.1002/jmv.29230] [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: 05/25/2023] [Revised: 10/23/2023] [Accepted: 10/30/2023] [Indexed: 11/29/2023]
Abstract
Novel treatment options for human papillomavirus (HPV)-induced cancers are urgently required. The oncogenic transcription factor signal transducer and activator of transcription 3 (STAT3) is considered to be constitutively active in HPV-positive cervical cancer cells and essential for their proliferation. Moreover, STAT3 was reported to undergo mutually stimulatory interactions with the HPV E6/E7 oncogenes. Thus, inhibiting STAT3 in HPV-positive cancer cells is under discussion to provide a powerful novel therapeutic strategy. We here show that the antifungal drug ciclopirox destabilizes the STAT3 protein by acting as an iron chelator. However, by exploring the functional consequences of STAT3 inhibition in HPV-positive cancer cells, we obtained several unexpected results. Chemical STAT3 inhibitors heterogeneously affect cervical cancer cell proliferation and those which act antiproliferative also block the growth of STAT3 knockout cells, indicating induction of off-target effects. In contrast to several chemical inhibitors, genetic inhibition of STAT3 expression by either RNA interference or the CRISPR/Cas9 method does not appreciably affect cervical cancer cell proliferation. Transcriptome analyses indicate that blocking STAT3 expression in HPV-positive cancer cells has very limited effects on putative STAT3 target genes. Although the targeted inhibition of specific growth-promoting signaling pathways leads to a feedback activation of STAT3 in cervical cancer cells via Janus kinase 1/2, this does not lead to treatment resistance. Moreover, we did not obtain experimental evidence for a STAT3-linked activation of HPV E6/E7 oncogene expression or, vice versa, an E6/E7-dependent activation of STAT3, at endogenous conditions in cervical cancer cells. Collectively, these findings question the essential role of STAT3 in cervical cancer cell proliferation and the strategy to inhibit STAT3 in these cells for therapeutic purposes.
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Affiliation(s)
- Tobias D Strobel
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Maria Weber
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Nora Heber
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Angela Holzer
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Karin Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Felix Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
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Ebadi Sharafabad B, Abdoli A, Panahi M, Abdolmohammadi Khiav L, Jamur P, Abedi Jafari F, Dilmaghani A. Anti-tumor Effects of Cisplatin Synergist in Combined Treatment with Clostridium novyi-NT Spores Against Hypoxic Microenvironments in a Mouse Model of Cervical Cancer Caused by TC-1 Cell Line. Adv Pharm Bull 2023; 13:817-826. [PMID: 38022809 PMCID: PMC10676560 DOI: 10.34172/apb.2023.084] [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: 09/25/2022] [Revised: 04/26/2023] [Accepted: 05/17/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose Despite the development of anti-human papillomavirus (HPV) vaccines, cervical cancer is still a common disease in women, especially in developing countries. The presence of a hypoxic microenvironment causes traditional treatments to fail. In this study, we presented a combined treatment method based on the chemotherapeutic agent cisplatin and Clostridium novyi-NT spores to treat normoxic and hypoxic areas of the tumor. Methods TC-1 Cell line capable of expressing HPV-16 E6/7 oncoproteins was subcutaneously transplanted into female 6-8 week old C57/BL6 mice. The tumor-bearing mice were randomly divided into four groups and treated with different methods after selecting a control group. Group 1: Control without treatment (0.1 mL sterile PBS intratumorally), Group: C. novyi-NT (107 C. novyi-NT). Group 3: Receives cisplatin intraperitoneally (10 mg/kg). Fourth group: Intratumoral administration of C. novyi-NT spores + intraperitoneal cisplatin. Western blot analysis was used to examine the effects of anti-hypoxia treatment and expression of hypoxia-inducible factor 1 (HIF-1) and vascular endothelial growth factor (VEGF) proteins. Results The results clearly showed that combined treatment based on C. novyi-NT and cisplatin significantly reduced the expression of HIF-1 alpha and VEGF proteins compared to cisplatin alone. At the same time, the amount of necrosis of tumor cells in the combined treatment increased significantly compared to the single treatment and the control. At the same time, the mitotic count decreased significantly. Conclusion Our research showed that developing a combined treatment method based on C. novyi-NT and cisplatin against HPV-positive cervical cancer could overcome the treatment limitations caused by the existence of hypoxic areas of the tumor.
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Affiliation(s)
- Behrouz Ebadi Sharafabad
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Asghar Abdoli
- Department of Hepatitis and HIV, Pasteur Institute of Iran (IPI), Tehran, Iran
| | - Mohammad Panahi
- Department of Hepatitis and HIV, Pasteur Institute of Iran (IPI), Tehran, Iran
| | - Lida Abdolmohammadi Khiav
- Department of Anaerobic Vaccine Research and Production, Specialized Clostridia Research Laboratory, Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization, Karaj, Iran
| | - Parisa Jamur
- Department of Hepatitis and HIV, Pasteur Institute of Iran (IPI), Tehran, Iran
| | - Fatemeh Abedi Jafari
- Department of Microbiology and Microbial Biotechnology, Faculty of Life Sciences and Biotechnology, Shahid Beheshti University, Tehran, Iran
| | - Azita Dilmaghani
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Soureas K, Papadimitriou MA, Panoutsopoulou K, Pilala KM, Scorilas A, Avgeris M. Cancer quiescence: non-coding RNAs in the spotlight. Trends Mol Med 2023; 29:843-858. [PMID: 37516569 DOI: 10.1016/j.molmed.2023.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/30/2023] [Accepted: 07/07/2023] [Indexed: 07/31/2023]
Abstract
Cancer quiescence reflects the ability of cancer cells to enter a reversible slow-cycling or mitotically dormant state and represents a powerful self-protecting mechanism preventing cancer cell 'damage' from hypoxic conditions, nutrient deprivation, immune surveillance, and (chemo)therapy. When stress conditions are restrained, and tumor microenvironment becomes beneficial, quiescent cancer cells re-enter cell cycle to facilitate tumor spread and cancer progression/metastasis. Recent studies have highlighted the dynamic role of regulatory non-coding RNAs (ncRNAs) in orchestrating cancer quiescence. The elucidation of regulatory ncRNA networks will shed light on the quiescence-proliferation equilibrium and, ultimately, pave the way for new treatment options. Herein, we have summarized the ever-growing role of ncRNAs upon cancer quiescence regulation and their impact on treatment resistance and modern cancer therapeutics.
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Affiliation(s)
- Konstantinos Soureas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece; Laboratory of Clinical Biochemistry - Molecular Diagnostics, Second Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, 'P. & A. Kyriakou' Children's Hospital, Athens, Greece
| | - Maria-Alexandra Papadimitriou
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantina Panoutsopoulou
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Katerina-Marina Pilala
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Andreas Scorilas
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Margaritis Avgeris
- Department of Biochemistry and Molecular Biology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece; Laboratory of Clinical Biochemistry - Molecular Diagnostics, Second Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, 'P. & A. Kyriakou' Children's Hospital, Athens, Greece.
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Mohan N, Wellach K, Özerdem C, Veits N, Förster JD, Foehr S, Bonsack M, Riemer AB. Effects of hypoxia on antigen presentation and T cell-based immune recognition of HPV16-transformed cells. Front Immunol 2022; 13:918528. [DOI: 10.3389/fimmu.2022.918528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 09/26/2022] [Indexed: 11/13/2022] Open
Abstract
Attempts to develop a therapeutic vaccine against human papillomavirus (HPV)-induced malignancies have mostly not been clinically successful to date. One reason may be the hypoxic microenvironment present in most tumors, including cervical cancer. Hypoxia dysregulates the levels of human leukocyte antigen (HLA) class I molecules in different tumor entities, impacts the function of cytotoxic T cells, and leads to decreased protein levels of the oncoproteins E6 and E7 in HPV-transformed cells. Therefore, we investigated the effect of hypoxia on the presentation of HPV16 E6- and E7-derived epitopes in cervical cancer cells and its effect on epitope-specific T cell cytotoxicity. Hypoxia induced downregulation of E7 protein levels in all analyzed cell lines, as assessed by Western blotting. However, contrary to previous reports, no perturbation of antigen processing and presentation machinery (APM) components and HLA-A2 surface expression upon hypoxia treatment was detected by mass spectrometry and flow cytometry, respectively. Cytotoxicity assays performed in hypoxic conditions showed differential effects on the specific killing of HPV16-positive cervical cancer cells by epitope-specific CD8+ T cell lines in a donor- and peptide-specific manner. Effects of hypoxia on the expression of PD-L1 were ruled out by flow cytometry analysis. Altogether, our results under hypoxia show a decreased expression of E6 and E7, but an intact APM, and epitope- and donor-dependent effects on T cell cytotoxicity towards HPV16-positive target cells. This suggests that successful immunotherapies can be developed for hypoxic HPV-induced cervical cancer, with careful choice of target epitopes, and ideally in combination with hypoxia-alleviating measures.
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FAM57A (Family with Sequence Similarity 57 Member A) Is a Cell-Density-Regulated Protein and Promotes the Proliferation and Migration of Cervical Cancer Cells. Cells 2022; 11:cells11203309. [PMID: 36291175 PMCID: PMC9600422 DOI: 10.3390/cells11203309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/17/2022] [Accepted: 10/17/2022] [Indexed: 11/24/2022] Open
Abstract
The FAM57A (family with sequence similarity 57 member A) gene is controversially discussed to possess pro- or anti-tumorigenic potential. Here, we analyze the regulation of cellular FAM57A protein levels and study the functional role of FAM57A in HPV-positive cervical cancer cells. We find that FAM57A protein expression strongly depends on cell density, with FAM57A being readily detectable at low cell density, but undetectable at high cell density. This regulation occurs post-transcriptionally and is not mirrored by corresponding changes at the RNA level. We further show that FAM57A protein levels are highly increased in cervical cancer cells cultivated at hypoxia compared to normoxia and provide evidence that FAM57A is a hypoxia-responsive gene under control of the α-subunit of the HIF-1 (hypoxia-inducible factor-1) transcription factor. Yet, the strong relative increase of FAM57A protein levels in hypoxic cells is predominantly cell-density-dependent and occurs post-transcriptionally. Other anti-proliferative effectors besides hypoxia, such as silencing of HPV E6/E7 oncogene expression in cervical cancer cells, also result in an increase of FAM57A levels compared to untreated cells. Functional analyses reveal that FAM57A repression leads to pronounced anti-proliferative as well as anti-migratory effects in cervical cancer cells. Taken together, these results provide insights into the regulation of FAM57A protein levels and reveal that they underlie a tight cell-density-dependent control. Moreover, they identify FAM57A as a critical determinant for the phenotype of cervical cancer cells, which promotes their proliferation and migration capacities.
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10
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Nutritional Sensor REDD1 in Cancer and Inflammation: Friend or Foe? Int J Mol Sci 2022; 23:ijms23179686. [PMID: 36077083 PMCID: PMC9456073 DOI: 10.3390/ijms23179686] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/16/2022] [Accepted: 08/23/2022] [Indexed: 12/02/2022] Open
Abstract
Regulated in Development and DNA Damage Response 1 (REDD1)/DNA Damage-Induced Transcript 4 (DDIT4) is an immediate early response gene activated by different stress conditions, including growth factor depletion, hypoxia, DNA damage, and stress hormones, i.e., glucocorticoids. The most known functions of REDD1 are the inhibition of proliferative signaling and the regulation of metabolism via the repression of the central regulator of these processes, the mammalian target of rapamycin (mTOR). The involvement of REDD1 in cell growth, apoptosis, metabolism, and oxidative stress implies its role in various pathological conditions, including cancer and inflammatory diseases. Recently, REDD1 was identified as one of the central genes mechanistically involved in undesirable atrophic effects induced by chronic topical and systemic glucocorticoids widely used for the treatment of blood cancer and inflammatory diseases. In this review, we discuss the role of REDD1 in the regulation of cell signaling and processes in normal and cancer cells, its involvement in the pathogenesis of different diseases, and the approach to safer glucocorticoid receptor (GR)-targeted therapies via a combination of glucocorticoids and REDD1 inhibitors to decrease the adverse atrophogenic effects of these steroids.
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11
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Li J, Quan C, He YL, Cao Y, Chen Y, Wang YF, Wu LY. Autophagy regulated by the HIF/REDD1/mTORC1 signaling is progressively increased during erythroid differentiation under hypoxia. Front Cell Dev Biol 2022; 10:896893. [PMID: 36092719 PMCID: PMC9448881 DOI: 10.3389/fcell.2022.896893] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/04/2022] [Indexed: 11/13/2022] Open
Abstract
For hematopoietic stem and progenitor cells (HSPCs), hypoxia is a specific microenvironment known as the hypoxic niche. How hypoxia regulates erythroid differentiation of HSPCs remains unclear. In this study, we show that hypoxia evidently accelerates erythroid differentiation, and autophagy plays a pivotal role in this process. We further determine that mTORC1 signaling is suppressed by hypoxia to relieve its inhibition of autophagy, and with the process of erythroid differentiation, mTORC1 activity gradually decreases and autophagy activity increases accordingly. Moreover, we provide evidence that the HIF-1 target gene REDD1 is upregulated to suppress mTORC1 signaling and enhance autophagy, thereby promoting erythroid differentiation under hypoxia. Together, our study identifies that the enhanced autophagy by hypoxia favors erythroid maturation and elucidates a new regulatory pattern whereby autophagy is progressively increased during erythroid differentiation, which is driven by the HIF-1/REDD1/mTORC1 signaling in a hypoxic niche.
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Rahat MA. Mini-Review: Can the Metastatic Cascade Be Inhibited by Targeting CD147/EMMPRIN to Prevent Tumor Recurrence? Front Immunol 2022; 13:855978. [PMID: 35418981 PMCID: PMC8995701 DOI: 10.3389/fimmu.2022.855978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 03/07/2022] [Indexed: 12/05/2022] Open
Abstract
Solid tumors metastasize very early in their development, and once the metastatic cell is lodged in a remote organ, it can proliferate to generate a metastatic lesion or remain dormant for long periods. Dormant cells represent a real risk for future tumor recurrence, but because they are typically undetectable and insensitive to current modalities of treatment, it is difficult to treat them in time. We describe the metastatic cascade, which is the process that allows tumor cells to detach from the primary tumor, migrate in the tissue, intravasate and extravasate the lymphatics or a blood vessel, adhere to a remote tissue and eventually outgrow. We focus on the critical enabling role of the interactions between tumor cells and immune cells, especially macrophages, in driving the metastatic cascade, and on those stages that can potentially be targeted. In order to prevent the metastatic cascade and tumor recurrence, we would need to target a molecule that is involved in all of the steps of the process, and evidence is brought to suggest that CD147/EMMPRIN is such a protein and that targeting it blocks metastasis and prevents tumor recurrence.
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Affiliation(s)
- Michal A Rahat
- Immunotherapy Laboratory, Carmel Medical Center, Haifa, Israel.,Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
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13
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Torralba MG, Aleti G, Li W, Moncera KJ, Lin YH, Yu Y, Masternak MM, Golusinski W, Golusinski P, Lamperska K, Edlund A, Freire M, Nelson KE. Oral Microbial Species and Virulence Factors Associated with Oral Squamous Cell Carcinoma. MICROBIAL ECOLOGY 2021; 82:1030-1046. [PMID: 33155101 PMCID: PMC8551143 DOI: 10.1007/s00248-020-01596-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 09/01/2020] [Indexed: 05/14/2023]
Abstract
The human microbiome has been the focus of numerous research efforts to elucidate the pathogenesis of human diseases including cancer. Oral cancer mortality is high when compared with other cancers, as diagnosis often occurs during late stages. Its prevalence has increased in the USA over the past decade and accounts for over 40,000 new cancer patients each year. Additionally, oral cancer pathogenesis is not fully understood and is likely multifactorial. To unravel the relationships that are associated with the oral microbiome and their virulence factors, we used 16S rDNA and metagenomic sequencing to characterize the microbial composition and functional content in oral squamous cell carcinoma (OSCC) tumor tissue, non-tumor tissue, and saliva from 18 OSCC patients. Results indicate a higher number of bacteria belonging to the Fusobacteria, Bacteroidetes, and Firmicutes phyla associated with tumor tissue when compared with all other sample types. Additionally, saliva metaproteomics revealed a significant increase of Prevotella in five OSCC subjects, while Corynebacterium was mostly associated with ten healthy subjects. Lastly, we determined that there are adhesion and virulence factors associated with Streptococcus gordonii as well as from known oral pathogens belonging to the Fusobacterium genera found mostly in OSCC tissues. From these results, we propose that not only will the methods utilized in this study drastically improve OSCC diagnostics, but the organisms and specific virulence factors from the phyla detected in tumor tissue may be excellent biomarkers for characterizing disease progression.
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Affiliation(s)
- Manolito G Torralba
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA.
| | - Gajender Aleti
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
| | - Weizhong Li
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
| | - Kelvin Jens Moncera
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
| | - Yi-Han Lin
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
| | - Yanbao Yu
- Department of Genomic Medicine, J. Craig Venter Institute, 9605 Medical Center Drive Suite 150, Rockville, MD, 20850, USA
| | - Michal M Masternak
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, 6900 Lake Nona Blvd, Central Florida Blvd, Orlando, FL, 32827, USA
| | - Wojciech Golusinski
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, Garbary 15, 61-866, Poznan, Poland
| | - Pawel Golusinski
- Department of Head and Neck Surgery, Poznan University of Medical Sciences, The Greater Poland Cancer Centre, Garbary 15, 61-866, Poznan, Poland
- Department of Otolaryngology and Maxillofacial Surgery, University of Zielona Gora, Podgórna 50, 65-246, Zielona Góra, Poland
| | - Katarzyna Lamperska
- Laboratory of Cancer Genetics, Greater Poland Cancer Centre, 15th Garbary Street, room 5025, 61-866, Poznan, Poland
| | - Anna Edlund
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
| | - Marcelo Freire
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
| | - Karen E Nelson
- Department of Genomic Medicine, J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, CA, 92037, USA
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14
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Inturi R, Jemth P. CRISPR/Cas9-based inactivation of human papillomavirus oncogenes E6 or E7 induces senescence in cervical cancer cells. Virology 2021; 562:92-102. [PMID: 34280810 DOI: 10.1016/j.virol.2021.07.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/02/2021] [Accepted: 07/08/2021] [Indexed: 01/10/2023]
Abstract
Human papillomaviruses (HPVs) such as HPV16 and HPV18 can cause cancers of the cervix, anogenital and oropharyngeal sites. Continuous expression of the HPV oncoproteins E6 and E7 are essential for transformation and maintenance of cancer cells. Therefore, therapeutic targeting of E6 or E7 genes can potentially treat HPV-related cancers. Here we report that CRISPR/Cas9-based knockout of E6 or E7 can trigger cellular senescence in HPV18 immortalized HeLa cells. Specifically, E6 or E7-inactivated HeLa cells exhibited characteristic senescence markers like enlarged cell surface area, increased β-galactosidase expression and loss of lamin B1. Since E6 and E7 are bicistronic transcripts, inactivation of HPV18 E6 resulted in knockout of both E6 and E7 and increasing levels of p53/p21 and pRb/p21, respectively. Knockout of HPV18 E7 resulted in decreased E6 expression with activation of pRb/p21 pathway. Taken together, our study demonstrates cellular senescence as an alternative outcome of HPV oncogene inactivation by CRISPR/Cas9.
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Affiliation(s)
- Raviteja Inturi
- Department of Medical Biochemistry and Microbiology, Uppsala University, BMC, Box 582, SE-75123, Uppsala, Sweden.
| | - Per Jemth
- Department of Medical Biochemistry and Microbiology, Uppsala University, BMC, Box 582, SE-75123, Uppsala, Sweden.
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15
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Jaapar FN, Parmin NA, Halim NHA, Hashim U, Gopinath SCB, Halim FS, Ruslinda AR, Voon CH, Uda MNA, Uda MNA, Nadzirah S, Rejali Z, Afzan A, Zakaria II. Designing DNA probe from HPV 18 and 58 in the E6 region for sensing element in the development of genosensor-based gold nanoparticles. Biotechnol Appl Biochem 2021; 69:1966-1983. [PMID: 34554606 DOI: 10.1002/bab.2260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/19/2021] [Indexed: 11/09/2022]
Abstract
The E6 region has higher protuberant probability annealing than consensus probe focusing on another region in the human papillomavirus (HPV) genome in terms of detection and screening method. Here, we designed the first multiple virus single-stranded deoxyribonucleic acid (ssDNA) for multiple detections in an early phase of screening for cervical cancer in the E6 region and became a fundamental evolution of detection electrochemical HPV biosensor. Gene profiling of the virus ssDNA sequences has been carried by high-end bioinformatics tools such as GenBank, Basic Local Alignment Searching Tools (BLAST), and Clustal OMEGA in a row. The output from bioinformatics tools resulted in 100% of similarities between our virus ssDNA probe and HPV complete genome in the databases. The cross-validation between HPV genome and our designed virus ssDNA provided high specificity and selectivity during screening methods compared with Pap smear. The DNA probe for HPV 18, 5' COOH-GAT CCA GAA GGT ACA GAC GGG GAG GGC ACG 3', while 5'COOH-GGG CGC TGT GCA GTG TGT TGG AGA CCC CGA3' as DNA probe for HPV 58 designed with 66.77% guanine (G) and cytosine (C) content for both. Our virus ssDNA probe for the HPV biosensor promises high sensitivity, specificity, selectivity, repeatability, low fluid consumption, and will be useful in mini-size diagnostic devices for cervical cancer detection.
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Affiliation(s)
- F Nadhirah Jaapar
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - N A Parmin
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - N Hamidah A Halim
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - Uda Hashim
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - Subash C B Gopinath
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia.,Faculty of Chemical Engineering Technology, Universiti Malaysia Perlis (UniMAP), Arau, Perlis, 02600, Malaysia
| | - F Syakirah Halim
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - A Rahim Ruslinda
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - C H Voon
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - M N A Uda
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - M N Afnan Uda
- Institute of Nano Electronic Engineering, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia
| | - Sh Nadzirah
- Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia
| | - Zulida Rejali
- Department of Obstetrics and Gynaecology, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Amilia Afzan
- Department of Obstetrics and Gynaecology, Faculty of Medicine & Health Sciences, Universiti Putra Malaysia, UPM Serdang, Selangor, Malaysia
| | - Iffah Izzati Zakaria
- Malaysia Genome Institute (MGI), National Institute of Biotechnology (NIBM), Kajang, Selangor, Malaysia
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16
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The Catastrophic HPV/HIV Dual Viral Oncogenomics in Concert with Dysregulated Alternative Splicing in Cervical Cancer. Int J Mol Sci 2021; 22:ijms221810115. [PMID: 34576278 PMCID: PMC8472041 DOI: 10.3390/ijms221810115] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/04/2021] [Accepted: 09/06/2021] [Indexed: 11/16/2022] Open
Abstract
Cervical cancer is a public health problem and has devastating effects in low-to-middle-income countries (LTMICs) such as the sub-Saharan African (SSA) countries. Infection by the human papillomavirus (HPV) is the main cause of cervical cancer. HIV positive women have higher HPV prevalence and cervical cancer incidence than their HIV negative counterparts do. Concurrent HPV/HIV infection is catastrophic, particularly to African women due to the high prevalence of HIV infections. Although various studies show a relationship between HPV, HIV and cervical cancer, there is still a gap in the knowledge concerning the precise nature of this tripartite association. Firstly, most studies show the relationship between HPV and cervical cancer at genomic and epigenetic levels, while the transcriptomic landscape of this relationship remains to be elucidated. Even though many studies have shown HPV/HIV dual viral pathogenesis, the dual molecular oncoviral effects on the development of cervical cancer remains largely uncertain. Furthermore, the effect of highly active antiretroviral therapy (HAART) on the cellular splicing machinery is unclear. Emerging evidence indicates the vital role played by host splicing events in both HPV and HIV infection in the development and progression to cervical cancer. Therefore, decoding the transcriptome landscape of this tripartite relationship holds promising therapeutic potential. This review will focus on the link between cellular splicing machinery, HPV, HIV infection and the aberrant alternative splicing events that take place in HIV/HPV-associated cervical cancer. Finally, we will investigate how these aberrant splicing events can be targeted for the development of new therapeutic strategies against HPV/HIV-associated cervical cancer.
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17
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Theobald L, Stroeder R, Melchior P, Iordache II, Tänzer T, Port M, Glombitza B, Marx S, Schub D, Herr C, Hart M, Ludwig N, Meese E, Kim YJ, Bohle RM, Smola S, Rübe C, Solomayer EF, Walch-Rückheim B. Chemoradiotherapy-induced increase in Th17 cell frequency in cervical cancer patients is associated with therapy resistance and early relapse. Mol Oncol 2021; 15:3559-3577. [PMID: 34469022 PMCID: PMC8637579 DOI: 10.1002/1878-0261.13095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/22/2021] [Accepted: 08/31/2021] [Indexed: 12/19/2022] Open
Abstract
Cervical cancer therapy is still a major clinical challenge, as patients substantially differ in their response to standard treatments, including chemoradiotherapy (CRT). During cervical carcinogenesis, T-helper (Th)-17 cells accumulate in the peripheral blood and tumor tissues of cancer patients and are associated with poor prognosis. In this prospective study, we find increased Th17 frequencies in the blood of patients after chemoradiotherapy and a post-therapeutic ratio of Th17/CD4+ T cells > 8% was associated with early recurrence. Furthermore, Th17 cells promote resistance of cervical cancer cells toward CRT, which was dependent on the AKT signaling pathway. Consistently, patients with high Th17 frequencies in pretherapeutic biopsies exhibit lower response to primary CRT. This work reveals a key role of Th17 cells in CRT resistance and elevated Th17 frequencies in the blood after CRT correspond with early recurrence. Our results may help to explain individual treatment responses of cervical cancer patients and suggest evaluation of Th17 cells as a novel predictive biomarker for chemoradiotherapy responses and as a potential target for immunotherapy in cervical cancer.
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Affiliation(s)
- Laura Theobald
- Institute of Virology and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
| | - Russalina Stroeder
- Department of Obstetrics and Gynecology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Patrick Melchior
- Department of Radiation Oncology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Ioan Iulian Iordache
- Department of Obstetrics and Gynecology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Tanja Tänzer
- Institute of Virology and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
| | - Meike Port
- Institute of Virology and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
| | - Birgit Glombitza
- Institute of Virology and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
| | - Stefanie Marx
- Department of Transplant and Infection Immunology, Saarland University, Homburg/Saar, Germany
| | - David Schub
- Department of Transplant and Infection Immunology, Saarland University, Homburg/Saar, Germany
| | - Christian Herr
- Department of Internal Medicine V - Pulmonology, Allergology and Critical Care Medicine, Saarland University Medical Center, Homburg/Saar, Germany
| | - Martin Hart
- Institute of Human Genetics, Saarland University, Homburg/Saar, Germany
| | - Nicole Ludwig
- Institute of Human Genetics and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
| | - Eckart Meese
- Institute of Human Genetics, Saarland University, Homburg/Saar, Germany
| | - Yoo-Jin Kim
- Institute of Pathology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Rainer Maria Bohle
- Institute of Pathology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Sigrun Smola
- Institute of Virology and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
| | - Christian Rübe
- Department of Radiation Oncology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Erich Franz Solomayer
- Department of Obstetrics and Gynecology, Saarland University Medical Center, Homburg/Saar, Germany
| | - Barbara Walch-Rückheim
- Institute of Virology and Center of Human and Molecular Biology, Saarland University, Homburg/Saar, Germany
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18
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Spiotto MT, Taniguchi CM, Klopp AH, Colbert LE, Lin SH, Wang L, Frederick MJ, Osman AA, Pickering CR, Frank SJ. Biology of the Radio- and Chemo-Responsiveness in HPV Malignancies. Semin Radiat Oncol 2021; 31:274-285. [PMID: 34455983 DOI: 10.1016/j.semradonc.2021.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In multiple anatomic sites, patients with cancers associated with the Human Papillomavirus (HPV) experience better locoregional control and overall survival after radiotherapy and/or chemoradiotherapy than patients with HPV-negative cancers. These improved outcomes suggest that relatively unique biological features in HPV-positive cancers may increase sensitivity to DNA damaging agents as well as an impaired DNA damage response. This review will address potential biological mechanisms driving this increased sensitivity of HPV-positive cancer to radiation and/or chemotherapy. This review will discuss the clinical and preclinical observations that support the intrinsic radiosensitivity and/or chemosensitivity of HPV-positive cancers. Furthermore, this review will highlight the molecular mechanisms for increased radiation sensitivity using the classical "4 Rs" of radiobiology: repair, reassortment, repopulation, and reoxygenation. First, HPV-positive cancers have increased DNA damage due to increased oxidative stress and impaired DNA damage repair due to the altered activity TP53, p16, TIP60, and other repair proteins. Second, irradiated HPV-positive cancer cells display increased G2/M arrest leading to reassortment of cancer cells in more radiosensitive phases of the cell cycle. In addition, HPV-positive cancers have less radioresistant cancer stem cell subpopulations that may limit their repopulation during radiotherapy. Finally, HPV-positive cancers may also have less hypoxic tumor microenvironments that make these cancers more sensitive to radiation than HPV-negative cells. We will also discuss extrinsic immune and microenvironmental factors enriched in HPV-positive cancers that facilities responses to radiation. Therefore, these potential biological mechanisms may underpin the improved clinical outcomes often observed in these virally induced cancers.
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Affiliation(s)
- Michael T Spiotto
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX.
| | - Cullen M Taniguchi
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Ann H Klopp
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Lauren E Colbert
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Steven H Lin
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Li Wang
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | | | - Abdullah A Osman
- Department of Head and Neck Surgery, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Curtis R Pickering
- Department of Head and Neck Surgery, The University of Texas M.D. Anderson Cancer Center, Houston, TX
| | - Steven J Frank
- Department of Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, TX
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19
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Alhazmi HA, Najmi A, Javed SA, Sultana S, Al Bratty M, Makeen HA, Meraya AM, Ahsan W, Mohan S, Taha MME, Khalid A. Medicinal Plants and Isolated Molecules Demonstrating Immunomodulation Activity as Potential Alternative Therapies for Viral Diseases Including COVID-19. Front Immunol 2021; 12:637553. [PMID: 34054806 PMCID: PMC8155592 DOI: 10.3389/fimmu.2021.637553] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 04/26/2021] [Indexed: 12/19/2022] Open
Abstract
Plants have been extensively studied since ancient times and numerous important chemical constituents with tremendous therapeutic potential are identified. Attacks of microorganisms including viruses and bacteria can be counteracted with an efficient immune system and therefore, stimulation of body's defense mechanism against infections has been proven to be an effective approach. Polysaccharides, terpenoids, flavonoids, alkaloids, glycosides, and lactones are the important phytochemicals, reported to be primarily responsible for immunomodulation activity of the plants. These phytochemicals may act as lead molecules for the development of safe and effective immunomodulators as potential remedies for the prevention and cure of viral diseases. Natural products are known to primarily modulate the immune system in nonspecific ways. A number of plant-based principles have been identified and isolated with potential immunomodulation activity which justify their use in traditional folklore medicine and can form the basis of further specified research. The aim of the current review is to describe and highlight the immunomodulation potential of certain plants along with their bioactive chemical constituents. Relevant literatures of recent years were searched from commonly employed scientific databases on the basis of their ethnopharmacological use. Most of the plants displaying considerable immunomodulation activity are summarized along with their possible mechanisms. These discussions shall hopefully elicit the attention of researchers and encourage further studies on these plant-based immunomodulation products as potential therapy for the management of infectious diseases, including viral ones such as COVID-19.
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Affiliation(s)
- Hassan A. Alhazmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
- Substance Abuse and Toxicology Research Centre, Jazan University, Jazan, Saudi Arabia
| | - Asim Najmi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Sadique A. Javed
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Shahnaz Sultana
- Department of Pharmacognosy, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Mohammed Al Bratty
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Hafiz A. Makeen
- Department of Clinical Pharmacy, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Abdulkarim M. Meraya
- Department of Clinical Pharmacy, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Waquar Ahsan
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan, Saudi Arabia
| | - Syam Mohan
- Substance Abuse and Toxicology Research Centre, Jazan University, Jazan, Saudi Arabia
| | - Manal M. E. Taha
- Substance Abuse and Toxicology Research Centre, Jazan University, Jazan, Saudi Arabia
| | - Asaad Khalid
- Substance Abuse and Toxicology Research Centre, Jazan University, Jazan, Saudi Arabia
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20
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Hoppe-Seyler K, Herrmann AL, Däschle A, Kuhn BJ, Strobel TD, Lohrey C, Bulkescher J, Krijgsveld J, Hoppe-Seyler F. Effects of Metformin on the virus/host cell crosstalk in human papillomavirus-positive cancer cells. Int J Cancer 2021; 149:1137-1149. [PMID: 33844847 DOI: 10.1002/ijc.33594] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 03/17/2021] [Accepted: 04/06/2021] [Indexed: 12/14/2022]
Abstract
Oncogenic types of human papillomaviruses (HPVs) are major human carcinogens. The viral E6/E7 oncogenes maintain the malignant growth of HPV-positive cancer cells. Targeted E6/E7 inhibition results in efficient induction of cellular senescence, which could be exploited for therapeutic purposes. Here we show that viral E6/E7 expression is strongly downregulated by Metformin in HPV-positive cervical cancer and head and neck cancer cells, both at the transcript and protein level. Metformin-induced E6/E7 repression is glucose and PI3K-dependent but-other than E6/E7 repression under hypoxia-AKT-independent. Proteome analyses reveal that Metformin-induced HPV oncogene repression is linked to the downregulation of cellular factors associated with E6/E7 expression in HPV-positive cancer biopsies. Notably, despite efficient E6/E7 repression, Metformin induces only a reversible proliferative stop in HPV-positive cancer cells and enables them to evade senescence. Metformin also efficiently blocks senescence induction in HPV-positive cancer cells in response to targeted E6/E7 inhibition by RNA interference. Moreover, Metformin treatment enables HPV-positive cancer cells to escape from chemotherapy-induced senescence. These findings uncover profound effects of Metformin on the virus/host cell interactions and the phenotype of HPV-positive cancer cells with implications for therapy-induced senescence, for attempts to repurpose Metformin as an anticancer agent and for the development of E6/E7-inhibitory therapeutic strategies.
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Affiliation(s)
- Karin Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Anja L Herrmann
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Antonia Däschle
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Bianca J Kuhn
- Faculty of Biosciences, Heidelberg University, Heidelberg, Germany.,Division of Proteomics of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tobias D Strobel
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Claudia Lohrey
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Julia Bulkescher
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jeroen Krijgsveld
- Division of Proteomics of Stem Cells and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Medical Faculty, Heidelberg University, Heidelberg, Germany
| | - Felix Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
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21
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Resistance of Hypoxic Cells to Ionizing Radiation Is Mediated in Part via Hypoxia-Induced Quiescence. Cells 2021; 10:cells10030610. [PMID: 33801903 PMCID: PMC7998378 DOI: 10.3390/cells10030610] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 12/19/2022] Open
Abstract
Double strand breaks (DSBs) are highly toxic to a cell, a property that is exploited in radiation therapy. A critical component for the damage induction is cellular oxygen, making hypoxic tumor areas refractory to the efficacy of radiation treatment. During a fractionated radiation regimen, these hypoxic areas can be re-oxygenated. Nonetheless, hypoxia still constitutes a negative prognostic factor for the patient’s outcome. We hypothesized that this might be attributed to specific hypoxia-induced cellular traits that are maintained upon reoxygenation. Here, we show that reoxygenation of hypoxic non-transformed RPE-1 cells fully restored induction of DSBs but the cells remain radioresistant as a consequence of hypoxia-induced quiescence. With the use of the cell cycle indicators (FUCCI), cell cycle-specific radiation sensitivity, the cell cycle phase duration with live cell imaging, and single cell tracing were assessed. We observed that RPE-1 cells experience a longer G1 phase under hypoxia and retain a large fraction of cells that are non-cycling. Expression of HPV oncoprotein E7 prevents hypoxia-induced quiescence and abolishes the radioprotective effect. In line with this, HPV-negative cancer cell lines retain radioresistance, while HPV-positive cancer cell lines are radiosensitized upon reoxygenation. Quiescence induction in hypoxia and its HPV-driven prevention was observed in 3D multicellular spheroids. Collectively, we identify a new hypoxia-dependent radioprotective phenotype due to hypoxia-induced quiescence that accounts for a global decrease in radiosensitivity that can be retained upon reoxygenation and is absent in cells expressing oncoprotein E7.
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22
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Rasi Bonab F, Baghbanzadeh A, Ghaseminia M, Bolandi N, Mokhtarzadeh A, Amini M, Dadashzadeh K, Hajiasgharzadeh K, Baradaran B, Bannazadeh Baghi H. Molecular pathways in the development of HPV-induced cervical cancer. EXCLI JOURNAL 2021; 20:320-337. [PMID: 33746665 PMCID: PMC7975633 DOI: 10.17179/excli2021-3365] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 02/10/2021] [Indexed: 12/11/2022]
Abstract
Recently, human papillomavirus (HPV) has gained considerable attention in cervical cancer research studies. It is one of the most important sexually transmitted diseases that can affect 160 to 289 out of 10000 persons every year. Due to the infectious nature of this virus, HPV can be considered a serious threat. The knowledge of viral structure, especially for viral oncoproteins like E6, E7, and their role in causing cancer is very important. This virus has different paths (PI3K/Akt, Wnt/β-catenin, ERK/MAPK, and JAK/STAT) that are involved in the transmission of signaling paths through active molecules like MEK (pMEK), ERK (pERK), and Akt (pAkt). It's eventually through these paths that cancer is developed. Precise knowledge of these paths and their signals give us the prognosis to adopt appropriate goals for prevention and control of these series of cancer.
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Affiliation(s)
- Farnaz Rasi Bonab
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Laboratory Sciences, Marand Branch, Islamic Azad University, Marand, Iran
| | - Amir Baghbanzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Moslem Ghaseminia
- Department of Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nadia Bolandi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahad Mokhtarzadeh
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Amini
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kianoosh Dadashzadeh
- Department of Laboratory Sciences, Marand Branch, Islamic Azad University, Marand, Iran
| | | | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Immunology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hossein Bannazadeh Baghi
- Department of Virology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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23
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p53 Is Regulated in a Biphasic Manner in Hypoxic Human Papillomavirus Type 16 (HPV16)-Positive Cervical Cancer Cells. Int J Mol Sci 2020; 21:ijms21249533. [PMID: 33333786 PMCID: PMC7765197 DOI: 10.3390/ijms21249533] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/03/2020] [Accepted: 12/10/2020] [Indexed: 12/31/2022] Open
Abstract
Although the effect of hypoxia on p53 in human papillomavirus (HPV)-positive cancer cells has been studied for decades, the impact of p53 regulation on downstream targets and cellular adaptation processes during different periods under hypoxia remains elusive. Here, we show that, despite continuous repression of HPV16 E6/E7 oncogenes, p53 did not instantly recover but instead showed a biphasic regulation marked by further depletion within 24 h followed by an increase at 72 h. Of note, during E6/E7 oncogene suppression, lysosomal degradation antagonizes p53 reconstitution. Consequently, the transcription of p53 responsive genes associated with senescence (e.g., PML and YPEL3) cannot be upregulated. In contrast, downstream genes involved in autophagy (e.g., DRAM1 and BNIP3) were activated, allowing the evasion of senescence under hypoxic conditions. Hence, dynamic regulation of p53 along with its downstream network of responsive genes favors cellular adaptation and enhances cell survival, although the expression of the viral E6/E7-oncogenes as drivers for proliferation remained inhibited under hypoxia.
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24
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Göttgens EL, Bussink J, Ansems M, Hammond EM, Span PN. AKT inhibition as a strategy for targeting hypoxic HPV-positive HNSCC. Radiother Oncol 2020; 149:1-7. [PMID: 32361013 DOI: 10.1016/j.radonc.2020.04.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/23/2020] [Accepted: 04/26/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND PURPOSE Hypoxia negatively affects treatment outcome in both Human papillomavirus (HPV)-positive and -negative head and neck squamous cell carcinomas (HNSCC). Despite HPV-positive patients having a relatively good prognosis, hypoxic HPV-positive tumours are associated with poor treatment outcome, and do not respond to hypoxia modification. Earlier, we showed that hypoxia induces the pro-survival AKT pathway. In this study, we aim to investigate whether AKT inhibition affects the response to radiotherapy under hypoxia, and determine whether this is a viable treatment strategy for HNSCC patients with hypoxic HPV-positive tumours. MATERIALS AND METHODS Nine HPV-negative and 4 HPV-positive HNSCC cell lines were characterized. AKT activation was assessed by western blot. Survival in response to hypoxic incubation, AKT inhibition and/or irradiation was assessed using CCK8 assays and colony forming assays. RESULTS AKT was activated under hypoxia in both HPV-negative and -positive cell lines, which could be abrogated by the AKT inhibitor MK2206. HPV-positive cell lines were highly sensitive to MK2206 at normoxia. In all HNSCC cell lines, AKT inhibition was significantly more effective in inhibiting cell growth during hypoxic conditions than under normoxia. Hypoxia significantly reduced radiosensitivity irrespective of HPV-status, yet specifically in HPV-positive cells this could be efficiently reversed by AKT inhibition. CONCLUSIONS These data suggest that HNSCC tumours are dependent on AKT to survive hypoxia, and that AKT inhibition is specifically effective in radioresistant hypoxic HPV-positive cells. Targeting AKT may thus be a potential way to overcome hypoxia induced radioresistance, particularly in HPV-positive HNSCC tumours.
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Affiliation(s)
- Eva-Leonne Göttgens
- Radiotherapy and OncoImmunology Laboratory, Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Johan Bussink
- Radiotherapy and OncoImmunology Laboratory, Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marleen Ansems
- Radiotherapy and OncoImmunology Laboratory, Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Ester M Hammond
- Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, United Kingdom
| | - Paul N Span
- Radiotherapy and OncoImmunology Laboratory, Department of Radiation Oncology, Radboud University Medical Center, Nijmegen, The Netherlands.
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25
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Perspectives in HPV Secondary Screening and Personalized Therapy Basing on Our Understanding of HPV-Related Carcinogenesis Pathways. Mediators Inflamm 2020; 2020:2607594. [PMID: 32308553 PMCID: PMC7132589 DOI: 10.1155/2020/2607594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Accepted: 03/13/2020] [Indexed: 01/10/2023] Open
Abstract
As cervical cancer is one of the most common malignancies in women worldwide even with present screening methods, the incidence in most developed countries is not decreasing for the last 15-20 years. A shift has been observed in the age of diagnosis in favour of younger women, and treatment of already developed cervical cancer is a challenge for surgeons. It is imperative to find new diagnostic methods for accurately pointing out patients at high risk of developing malignant disease and developing personalized treatment. Since cervical cancer is almost exclusively associated with HPV infection, understanding changes happening in an infected cell may prove invaluable for search of such methods, but it may also prove helpful in the diagnosis and treatment of other anogenital and nasopharyngeal region cancers. This review follows HPV-related changes in infected cell biology to point what potential markers and targets for therapy are in option when dealing with HPV-related diseases.
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26
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Braun JA, Herrmann AL, Blase JI, Frensemeier K, Bulkescher J, Scheffner M, Galy B, Hoppe-Seyler K, Hoppe-Seyler F. Effects of the antifungal agent ciclopirox in HPV-positive cancer cells: Repression of viral E6/E7 oncogene expression and induction of senescence and apoptosis. Int J Cancer 2019; 146:461-474. [PMID: 31603527 DOI: 10.1002/ijc.32709] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/05/2019] [Accepted: 09/18/2019] [Indexed: 01/02/2023]
Abstract
The malignant growth of human papillomavirus (HPV)-positive cancer cells is dependent on the continuous expression of the viral E6/E7 oncogenes. Here, we examined the effects of iron deprivation on the phenotype of HPV-positive cervical cancer cells. We found that iron chelators, such as the topical antifungal agent ciclopirox (CPX), strongly repress HPV E6/E7 oncogene expression, both at the transcript and protein level. CPX efficiently blocks the proliferation of HPV-positive cancer cells by inducing cellular senescence. Although active mTOR signaling is considered to be critical for the cellular senescence response towards a variety of prosenescent agents, CPX-induced senescence occurs under conditions of severely impaired mTOR signaling. Prolonged CPX treatment leads to p53-independent Caspase-3/7 activation and induction of apoptosis. CPX also eliminates HPV-positive cancer cells under hypoxic conditions through induction of apoptosis. Taken together, these results show that iron deprivation exerts profound antiviral and antiproliferative effects in HPV-positive cancer cells and suggest that iron chelators, such as CPX, possess therapeutic potential as HPV-inhibitory, prosenescent and proapoptotic agents in both normoxic and hypoxic environments.
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Affiliation(s)
- Julia A Braun
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Anja L Herrmann
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Johanna I Blase
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kristin Frensemeier
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Julia Bulkescher
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martin Scheffner
- Department of Biology, University of Konstanz, Konstanz, Germany
| | - Bruno Galy
- Virus-Associated Carcinogenesis, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Karin Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Felix Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), Heidelberg, Germany
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27
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Jahanban-Esfahlan R, Seidi K, Manjili MH, Jahanban-Esfahlan A, Javaheri T, Zare P. Tumor Cell Dormancy: Threat or Opportunity in the Fight against Cancer. Cancers (Basel) 2019; 11:cancers11081207. [PMID: 31430951 PMCID: PMC6721805 DOI: 10.3390/cancers11081207] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/11/2019] [Accepted: 08/13/2019] [Indexed: 12/15/2022] Open
Abstract
Tumor dormancy, a clinically undetectable state of cancer, makes a major contribution to the development of multidrug resistance (MDR), minimum residual disease (MRD), tumor outgrowth, cancer relapse, and metastasis. Despite its high incidence, the whole picture of dormancy-regulated molecular programs is far from clear. That is, it is unknown when and which dormant cells will resume proliferation causing late relapse, and which will remain asymptomatic and harmless to their hosts. Thus, identification of dormancy-related culprits and understanding their roles can help predict cancer prognosis and may increase the probability of timely therapeutic intervention for the desired outcome. Here, we provide a comprehensive review of the dormancy-dictated molecular mechanisms, including angiogenic switch, immune escape, cancer stem cells, extracellular matrix (ECM) remodeling, metabolic reprogramming, miRNAs, epigenetic modifications, and stress-induced p38 signaling pathways. Further, we analyze the possibility of leveraging these dormancy-related molecular cues to outmaneuver cancer and discuss the implications of such approaches in cancer treatment.
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Affiliation(s)
- Rana Jahanban-Esfahlan
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz 9841, Iran
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz 9841, Iran
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz 9841, Iran
| | - Khaled Seidi
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz 9841, Iran
| | - Masoud H Manjili
- Department of Microbiology & Immunology, VCU School of Medicine, Massey Cancer Center, Richmond, VA 23298, USA
| | | | - Tahereh Javaheri
- Ludwig Boltzmann Institute for Cancer Research, 1090 Vienna, Austria.
| | - Peyman Zare
- Faculty of Medicine, Cardinal Stefan Wyszyński University in Warsaw, 01-938 Warsaw, Poland.
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28
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Chatterjee K, Mukherjee S, Vanmanen J, Banerjee P, Fata JE. Dietary Polyphenols, Resveratrol and Pterostilbene Exhibit Antitumor Activity on an HPV E6-Positive Cervical Cancer Model: An in vitro and in vivo Analysis. Front Oncol 2019; 9:352. [PMID: 31143704 PMCID: PMC6521745 DOI: 10.3389/fonc.2019.00352] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 04/17/2019] [Indexed: 12/13/2022] Open
Abstract
Human papilloma virus (HPV)-induced cervical cancer is one of the most frequent cancers in women residing in underdeveloped countries. Natural compounds like polyphenols continue to be of scientific interest as non-toxic effective alternative treatments. Our previous work showed the efficacy of two polyphenols, resveratrol, and pterostilbene on human HeLa cells. Here we explored the in vitro anti-cancer activity and in vivo anti-tumor potential of these two structurally similar compounds on HPV oncogene E6 and E7 positive murine TC1 cells. In vitro analysis confirmed the cytotoxic potential of both resveratrol and pterostilbene compounds with each having a low IC50 value and each showing the ability to downregulate viral oncogene E6. Further in vivo studies on TC1 tumors developing in mice indicated that treatment with either resveratrol or pterostilbene can significantly inhibit tumor development, with both compounds capable of downregulating E6 and VEGF tumor protein levels. Interestingly, the decrease in tumor size in pterostilbene was associated with tumor cell apoptosis, as indicated by an upregulation of activated caspase-3 whereas in resveratrol-treated mice it was accompanied by arrest of cell cycle, as indicated by a downregulation of PCNA. Thus, resveratrol and pterostilbene can serve as potential antineoplastic agents against HPV E6+ tumors and may suppress tumor growth via two different mechanisms.
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Affiliation(s)
- Kaushiki Chatterjee
- Doctoral Program in Biology, CUNY Graduate Center, New York, NY, United States.,Department of Biology, College of Staten Island, New York, NY, United States
| | - Sumit Mukherjee
- Doctoral Program in Biochemistry, CUNY Graduate Center, New York, NY, United States.,Department of Chemistry & The Center for Developmental Neuroscience, City University of New York at The College of Staten Island, New York, NY, United States
| | - Jonathan Vanmanen
- Department of Biology, College of Staten Island, New York, NY, United States
| | - Probal Banerjee
- Doctoral Program in Biology, CUNY Graduate Center, New York, NY, United States.,Doctoral Program in Biochemistry, CUNY Graduate Center, New York, NY, United States.,Department of Chemistry & The Center for Developmental Neuroscience, City University of New York at The College of Staten Island, New York, NY, United States
| | - Jimmie E Fata
- Doctoral Program in Biology, CUNY Graduate Center, New York, NY, United States.,Department of Biology, College of Staten Island, New York, NY, United States.,Doctoral Program in Biochemistry, CUNY Graduate Center, New York, NY, United States
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29
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PI3K/AKT/mTOR Signaling Regulates the Virus/Host Cell Crosstalk in HPV-Positive Cervical Cancer Cells. Int J Mol Sci 2019; 20:ijms20092188. [PMID: 31058807 PMCID: PMC6539191 DOI: 10.3390/ijms20092188] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 04/26/2019] [Accepted: 04/30/2019] [Indexed: 12/15/2022] Open
Abstract
Human papillomavirus (HPV)-induced cancers will remain a significant clinical challenge for decades. Thus, the development of novel treatment strategies is urgently required, which should benefit from improving our understanding of the mechanisms of HPV-induced cell transformation. This should also include analyses of hypoxic tumor cells, which represent a major problem for cancer therapy. Recent evidence indicates that the PI3K/AKT/mTOR network plays a key role for the virus/host cell crosstalk in both normoxic and hypoxic HPV-positive cancer cells. In normoxic cells, the efficacy of the senescence induction upon experimental E6/E7 repression depends on active mTORC1 signaling. Under hypoxia, however, HPV-positive cancer cells can evade senescence due to hypoxic impairment of mTORC1 signaling, albeit the cells strongly downregulate E6/E7. Hypoxic repression of E6/E7 is mediated by the AKT kinase, which is activated under hypoxia by its canonical upstream regulators mTORC2 and PI3K. This review highlights our current knowledge about the oxygen-dependent crosstalk of the PI3K/AKT/mTOR signaling circuit with the HPV oncogenes and the phenotypic state of the host cell. Moreover, since the PI3K/AKT/mTOR pathway is considered to be a promising target for anticancer therapy, we discuss clinical implications for the treatment of HPV-positive cervical and head and neck squamous cell carcinomas.
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30
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Dormant, quiescent, tolerant and persister cells: Four synonyms for the same target in cancer. Biochem Pharmacol 2019; 162:169-176. [DOI: 10.1016/j.bcp.2018.11.004] [Citation(s) in RCA: 99] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/06/2018] [Indexed: 12/14/2022]
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31
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Efficacy of Surface-Modified PLGA Nanoparticles as a Function of Cervical Cancer Type. Pharm Res 2019; 36:66. [PMID: 30868271 DOI: 10.1007/s11095-019-2602-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 03/04/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Hypovascularization of cervical tumors, coupled with intrinsic and acquired drug resistance, has contributed to marginal therapeutic outcomes by hindering chemotherapeutic transport and efficacy. Recently, the heterogeneous penetration and distribution of cell penetrating peptide (CPP, here MPG) and polyethylene glycol (PEG) modified poly(lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) were evaluated as a function of tumor type and morphology in cervical cancer spheroids modeling hypovascularized tumor nodules. Building upon this work, this study investigates the efficacy imparted by surface-modified Doxorubicin-loaded NPs transported into hypovascularized tissue. METHODS NP efficacy was measured in HeLa, CaSki, and SiHa cells. NP internalization and association, and associated cell viability, were determined in monolayer and spheroid models. RESULTS MPG and PEG-NP co-treatment was most efficacious in HeLa cells, while PEG NPs were most efficacious in CaSki cells. NP surface-modifications were unable to improve efficacy, relative to unmodified NPs, in SiHa cells. CONCLUSIONS The results highlight the dependence of efficacy on tumor type and the associated microenvironment. The results further relate previous NP transport studies to efficacy, as a function of surface-modification and cell type. Longer-term, this information may help guide the design of NP-mediated strategies to maximize efficacy based on patient-specific cervical tumor origin and characteristics.
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32
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Repression of Human Papillomavirus Oncogene Expression under Hypoxia Is Mediated by PI3K/mTORC2/AKT Signaling. mBio 2019; 10:mBio.02323-18. [PMID: 30755508 PMCID: PMC6372795 DOI: 10.1128/mbio.02323-18] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Oncogenic HPV types are major human carcinogens. Under hypoxia, HPV-positive cancer cells can repress the viral E6/E7 oncogenes and induce a reversible growth arrest. This response could contribute to therapy resistance, immune evasion, and tumor recurrence upon reoxygenation. Here, we uncover evidence that HPV oncogene repression is mediated by hypoxia-induced activation of canonical PI3K/mTORC2/AKT signaling. AKT-dependent downregulation of E6/E7 is only observed under hypoxia and occurs, at least in part, at the transcriptional level. Quantitative proteome analyses identify additional factors as candidates to be involved in AKT-dependent E6/E7 repression and/or hypoxic PI3K/mTORC2/AKT activation. These results connect PI3K/mTORC2/AKT signaling with HPV oncogene regulation, providing new mechanistic insights into the cross talk between oncogenic HPVs and their host cells. Hypoxia is linked to therapeutic resistance and poor clinical prognosis for many tumor entities, including human papillomavirus (HPV)-positive cancers. Notably, HPV-positive cancer cells can induce a dormant state under hypoxia, characterized by a reversible growth arrest and strong repression of viral E6/E7 oncogene expression, which could contribute to therapy resistance, immune evasion and tumor recurrence. The present work aimed to gain mechanistic insights into the pathway(s) underlying HPV oncogene repression under hypoxia. We show that E6/E7 downregulation is mediated by hypoxia-induced stimulation of AKT signaling. Ablating AKT function in hypoxic HPV-positive cancer cells by using chemical inhibitors efficiently counteracts E6/E7 repression. Isoform-specific activation or downregulation of AKT1 and AKT2 reveals that both AKT isoforms contribute to hypoxic E6/E7 repression and act in a functionally redundant manner. Hypoxic AKT activation and consecutive E6/E7 repression is dependent on the activities of the canonical upstream AKT regulators phosphoinositide 3-kinase (PI3K) and mechanistic target of rapamycin (mTOR) complex 2 (mTORC2). Hypoxic downregulation of E6/E7 occurs, at least in part, at the transcriptional level. Modulation of E6/E7 expression by the PI3K/mTORC2/AKT cascade is hypoxia specific and not observed in normoxic HPV-positive cancer cells. Quantitative proteome analyses identify additional factors as candidates to be involved in hypoxia-induced activation of the PI3K/mTORC2/AKT signaling cascade and in the AKT-dependent repression of the E6/E7 oncogenes under hypoxia. Collectively, these data uncover a functional key role of the PI3K/mTORC2/AKT signaling cascade for viral oncogene repression in hypoxic HPV-positive cancer cells and provide new insights into the poorly understood cross talk between oncogenic HPVs and their host cells under hypoxia.
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33
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Wong J, Choi SYC, Liu R, Xu E, Killam J, Gout PW, Wang Y. Potential Therapies for Infectious Diseases Based on Targeting Immune Evasion Mechanisms That Pathogens Have in Common With Cancer Cells. Front Cell Infect Microbiol 2019; 9:25. [PMID: 30809511 PMCID: PMC6379255 DOI: 10.3389/fcimb.2019.00025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 01/24/2019] [Indexed: 12/18/2022] Open
Abstract
Many global infectious diseases are not well-controlled, underlining a critical need for new, more effective therapies. Pathogens and pathogen-infected host cells, like cancer cells, evade immune surveillance via immune evasion mechanisms. The present study indicates that pathogenic bacteria, endoparasites, and virus-infected host cells can have immune evasion mechanisms in common with cancers. These include entry into dormancy and metabolic reprogramming to aerobic glycolysis leading to excessive secretion of lactic acid and immobilization of local host immunity. The latter evasion tactic provides a therapeutic target for cancer, as shown by our recent finding that patient-derived cancer xenografts can be growth-arrested, without major host toxicity, by inhibiting their lactic acid secretion (as mediated by the MCT4 transporter)-with evidence of host immunity restoration. Accordingly, the multiplication of bacteria, endoparasites, and viruses that primarily depend on metabolic reprogramming to aerobic glycolysis for survival may be arrested using cancer treatment strategies that inhibit their lactic acid secretion. Immune evasion mechanisms shared by pathogens and cancer cells likely represent fundamental, evolutionarily-conserved mechanisms that may be particularly critical to their welfare. As such, their targeting may lead to novel therapies for infectious diseases.
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Affiliation(s)
- Jodi Wong
- Department of Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada
| | - Stephen Yiu Chuen Choi
- Department of Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada.,Vancouver Prostate Centre, Vancouver, BC, Canada.,Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, Canada
| | - Rongrong Liu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Eddie Xu
- Department of Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada.,Vancouver Prostate Centre, Vancouver, BC, Canada.,Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, Canada
| | - James Killam
- Vancouver Prostate Centre, Vancouver, BC, Canada
| | - Peter W Gout
- Department of Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada
| | - Yuzhuo Wang
- Department of Experimental Therapeutics, BC Cancer Research Centre, Vancouver, BC, Canada.,Vancouver Prostate Centre, Vancouver, BC, Canada.,Department of Urologic Sciences, The University of British Columbia, Vancouver, BC, Canada
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34
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Endo H, Inoue M. Dormancy in cancer. Cancer Sci 2019; 110:474-480. [PMID: 30575231 PMCID: PMC6361606 DOI: 10.1111/cas.13917] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/15/2018] [Accepted: 12/18/2018] [Indexed: 12/17/2022] Open
Abstract
The idea of tumor dormancy originated from clinical findings that recurrence of cancer occurs several years or even several decades after surgical resection of the primary tumor. Tumor mass dormancy was proposed as a model, where there is equal balance between increases in the number of cancer cells by proliferation and decreases as a result of cell death. Tumor mass dormancy includes angiogenic dormancy and immune-mediated dormancy. Another emerging type of tumor dormancy is cellular dormancy in which cancer cells are in a quiescent state. Cellular dormancy is induced by cues such as the extracellular matrix environment, metastatic niches, a hypoxic microenvironment, and endoplasmic reticulum stress. Even the oncogenic pathways, on which active cancer cells depend for survival and growth, are suppressed in the dormant state. As tumor dormancy is one of the mechanisms of resistance against various cancer therapies, targeting dormant cancer cells should be considered for future treatment strategies.
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Affiliation(s)
- Hiroko Endo
- Department of Molecular Cellular BiologyOsaka International Cancer InstituteOsakaJapan
- Department of BiochemistryOsaka International Cancer InstituteOsakaJapan
| | - Masahiro Inoue
- Department of BiochemistryOsaka International Cancer InstituteOsakaJapan
- Department of Clinical Bio‐resource Research and DevelopmentGraduate School of Medicine Kyoto UniversityKyotoJapan
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35
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Göttgens EL, Ostheimer C, Span PN, Bussink J, Hammond EM. HPV, hypoxia and radiation response in head and neck cancer. Br J Radiol 2019; 92:20180047. [PMID: 29493265 PMCID: PMC6435089 DOI: 10.1259/bjr.20180047] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/26/2018] [Accepted: 02/26/2018] [Indexed: 12/21/2022] Open
Abstract
Over the last decades, the incidence of human papilloma virus (HPV) positive head and neck squamous-cell carcinoma (HNSCC) has significantly increased. Infection with high-risk HPV types drives tumourigenesis through expression of the oncoproteins E6 and E7. Currently, the primary treatment of HNSCC consists of radiotherapy, often combined with platinum-based chemotherapeutics. One of the common features of HNSCC is the occurrence of tumour hypoxia, which impairs the efficacy of radiotherapy and is a negative prognostic factor. Therefore, it is important to detect and quantify the severity of hypoxia, as well as develop strategies to specifically target hypoxic tumours. HPV-positive tumours are remarkably radiosensitive compared to HPV-negative tumours and consequently the HPV-positive patients have a better prognosis. This provides an opportunity to elucidate mechanisms of radiation sensitivity, which may reveal targets for improved therapy for HPV-negative head and neck cancers. In this review, we will discuss the differences between HPV-positive and HPV-negative head and neck tumours and methods of hypoxia detection and targeting in these disease types. Particular emphasis will be placed on the mechanisms by which HPV infection impacts radiosensitivity.
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Affiliation(s)
- Eva-Leonne Göttgens
- Department of Radiation Oncology, Radiotherapy & OncoImmunology laboratory, Radboud University Medical Center, Nijmegen, Netherlands
| | | | - Paul N Span
- Department of Radiation Oncology, Radiotherapy & OncoImmunology laboratory, Radboud University Medical Center, Nijmegen, Netherlands
| | - Jan Bussink
- Department of Radiation Oncology, Radiotherapy & OncoImmunology laboratory, Radboud University Medical Center, Nijmegen, Netherlands
| | - Ester M Hammond
- Department of Oncology, CRUK/MRC Oxford Institute for Radiation Oncology, University of Oxford, Oxford, UK
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Nobre AR, Entenberg D, Wang Y, Condeelis J, Aguirre-Ghiso JA. The Different Routes to Metastasis via Hypoxia-Regulated Programs. Trends Cell Biol 2018; 28:941-956. [PMID: 30041830 PMCID: PMC6214449 DOI: 10.1016/j.tcb.2018.06.008] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 12/18/2022]
Abstract
Hypoxia is linked to metastasis; however, how it affects metastatic progression is not clear due to limited consensus in the literature. We posit that this lack of consensus is due to hypoxia being studied using different approaches, such as in vitro, primary tumor, or metastasis assays in an isolated manner. Here, we review the pros and cons of in vitro hypoxia assays, highlight in vivo studies that inform on physiological hypoxia, and review the evidence that primary tumor hypoxia might influence the fate of disseminated tumor cells (DTCs) in secondary organs. Our analysis suggests that consensus can be reached by using in vivo methods of study, which also allow better modeling of how hypoxia affects DTC fate and metastasis.
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Affiliation(s)
- Ana Rita Nobre
- Division of Hematology and Oncology, Department of Medicine, Department of Otolaryngology, Department of Oncological Sciences, Tisch Cancer Institute, Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA; Abel Salazar School of Biomedicine, Porto University, Porto, Portugal; These authors contributed equally
| | - David Entenberg
- Department of Anatomy and Structural Biology, Gruss Lipper Biophotonics Center, Integrated Imaging Program, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA; These authors contributed equally
| | - Yarong Wang
- Department of Anatomy and Structural Biology, Gruss Lipper Biophotonics Center, Integrated Imaging Program, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA
| | - John Condeelis
- Department of Anatomy and Structural Biology, Gruss Lipper Biophotonics Center, Integrated Imaging Program, Albert Einstein College of Medicine, 1300 Morris Park Ave, Bronx, NY 10461, USA.
| | - Julio A Aguirre-Ghiso
- Division of Hematology and Oncology, Department of Medicine, Department of Otolaryngology, Department of Oncological Sciences, Tisch Cancer Institute, Black Family Stem Cell Institute, Mount Sinai School of Medicine, New York, NY 10029, USA.
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37
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Prati B, Marangoni B, Boccardo E. Human papillomavirus and genome instability: from productive infection to cancer. Clinics (Sao Paulo) 2018; 73:e539s. [PMID: 30208168 PMCID: PMC6113919 DOI: 10.6061/clinics/2018/e539s] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 05/16/2018] [Indexed: 12/29/2022] Open
Abstract
Infection with high oncogenic risk human papillomavirus types is the etiological factor of cervical cancer and a major cause of other epithelial malignancies, including vulvar, vaginal, anal, penile and head and neck carcinomas. These agents affect epithelial homeostasis through the expression of specific proteins that deregulate important cellular signaling pathways to achieve efficient viral replication. Among the major targets of viral proteins are components of the DNA damage detection and repair machinery. The activation of many of these cellular factors is critical to process viral genome replication intermediates and, consequently, to sustain faithful viral progeny production. In addition to the important role of cellular DNA repair machinery in the infective human papillomavirus cycle, alterations in the expression and activity of many of its components are observed in human papillomavirus-related tumors. Several studies from different laboratories have reported the impact of the expression of human papillomavirus oncogenes, mainly E6 and E7, on proteins in almost all the main cellular DNA repair mechanisms. This has direct consequences on cellular transformation since it causes the accumulation of point mutations, insertions and deletions of short nucleotide stretches, as well as numerical and structural chromosomal alterations characteristic of tumor cells. On the other hand, it is clear that human papillomavirus-transformed cells depend on the preservation of a basal cellular DNA repair activity level to maintain tumor cell viability. In this review, we summarize the data concerning the effect of human papillomavirus infection on DNA repair mechanisms. In addition, we discuss the potential of exploiting human papillomavirus-transformed cell dependency on DNA repair pathways as effective antitumoral therapies.
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Affiliation(s)
- Bruna Prati
- Departamento de Microbiologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Bruna Marangoni
- Departamento de Microbiologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, BR
| | - Enrique Boccardo
- Departamento de Microbiologia, Instituto de Ciencias Biomedicas, Universidade de Sao Paulo, Sao Paulo, SP, BR
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38
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Szalmás A. Commentary: Induction of Dormancy in Hypoxic Human Papillomavirus-Positive Cancer Cells. Front Oncol 2018; 8:77. [PMID: 29637045 PMCID: PMC5881186 DOI: 10.3389/fonc.2018.00077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 03/07/2018] [Indexed: 12/30/2022] Open
Affiliation(s)
- Anita Szalmás
- Department of Medical Microbiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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39
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Böttcher MA, Held-Feindt J, Synowitz M, Lucius R, Traulsen A, Hattermann K. Modeling treatment-dependent glioma growth including a dormant tumor cell subpopulation. BMC Cancer 2018; 18:376. [PMID: 29614985 PMCID: PMC5883287 DOI: 10.1186/s12885-018-4281-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 03/21/2018] [Indexed: 02/07/2023] Open
Abstract
Background Tumors comprise a variety of specialized cell phenotypes adapted to different ecological niches that massively influence the tumor growth and its response to treatment. Methods In the background of glioblastoma multiforme, a highly malignant brain tumor, we consider a rapid proliferating phenotype that appears susceptible to treatment, and a dormant phenotype which lacks this pronounced proliferative ability and is not affected by standard therapeutic strategies. To gain insight in the dynamically changing proportions of different tumor cell phenotypes under different treatment conditions, we develop a mathematical model and underline our assumptions with experimental data. Results We show that both cell phenotypes contribute to the distinct composition of the tumor, especially in cycling low and high dose treatment, and therefore may influence the tumor growth in a phenotype specific way. Conclusion Our model of the dynamic proportions of dormant and rapidly growing glioblastoma cells in different therapy settings suggests that phenotypically different cells should be considered to plan dose and duration of treatment schedules.
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Affiliation(s)
- Marvin A Böttcher
- Department Evolutionary Theory, Max Planck Institute for Evolutionary Biology, 24306, Plön, Germany
| | - Janka Held-Feindt
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, 24105, Kiel, Germany
| | - Michael Synowitz
- Department of Neurosurgery, University Medical Center Schleswig-Holstein UKSH, Campus Kiel, 24105, Kiel, Germany
| | - Ralph Lucius
- Department of Anatomy, University of Kiel, 24098, Kiel, Germany
| | - Arne Traulsen
- Department Evolutionary Theory, Max Planck Institute for Evolutionary Biology, 24306, Plön, Germany
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40
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Wittekindt C, Wagner S, Sharma SJ, Würdemann N, Knuth J, Reder H, Klußmann JP. [HPV - A different view on Head and Neck Cancer]. Laryngorhinootologie 2018; 97:S48-S113. [PMID: 29905354 PMCID: PMC6540966 DOI: 10.1055/s-0043-121596] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Head and neck cancer is the sixth most common cancer with over 500000 annually reported incident cases worldwide. Besides major risk factors tobacco and alcohol, oropharyngeal squamous cell carcinomas (OSCC) show increased association with human papillomavirus (HPV). HPV-associated and HPV-negative OSCC are 2 different entities regarding biological characteristics, therapeutic response, and patient prognosis. In HPV OSCC, viral oncoprotein activity, as well as genetic (mutations and chromosomal aberrations) and epigenetic alterations plays a key role during carcinogenesis. Based on improved treatment response, the introduction of therapy de-intensification and targeted therapy is discussed for patients with HPV OSCC. A promising targeted therapy concept is immunotherapy. The use of checkpoint inhibitors (e.g. anti-PD1) is currently investigated. By means of liquid biopsies, biomarkers such as viral DNA or tumor mutations in the will soon be available for disease monitoring, as well as detection of treatment failure. By now, primary prophylaxis of HPV OSCC can be achieved by vaccination of girls and boys.
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Affiliation(s)
- Claus Wittekindt
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
| | - Steffen Wagner
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
| | - Shachi Jenny Sharma
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
| | - Nora Würdemann
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
| | - Jennifer Knuth
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
| | - Henrike Reder
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
| | - Jens Peter Klußmann
- Klinik für HNO-Heilkunde, Kopf-/Halschirurgie, Plastische Operationen, Universitätsklinikum Gießen und Marburg GmbH, Standort Gießen
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41
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Aguirre-Ghiso JA, Sosa MS. Emerging Topics on Disseminated Cancer Cell Dormancy and the Paradigm of Metastasis. ANNUAL REVIEW OF CANCER BIOLOGY-SERIES 2018. [DOI: 10.1146/annurev-cancerbio-030617-050446] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Julio A. Aguirre-Ghiso
- Division of Hematology and Medical Oncology, Department of Medicine, Department of Otolaryngology, Tisch Cancer Institute, and Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Maria Soledad Sosa
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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42
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Abstract
Metastases are responsible for most cancer-related deaths. The kinetics of tumor relapse is highly heterogeneous, ranging from recurrences shortly after diagnosis to years or even decades after the initial treatment. This subclinical period is known as tumor dormancy, in which residual disease remains in an undetectable state before finally appearing as an overtly proliferative metastasis. Despite recent advances in our understanding of the molecular mechanisms leading to tumor dormancy, it is still a poorly understood phase of cancer progression, which limits opportunities for the design of successful therapeutic interventions. The influence of the tumor microenvironment at the metastatic site and anti-metastatic immune responses have been shown to play a crucial role in the onset and maintenance of metastatic dormancy. However, there is still a significant gap in our understanding of how dormant cells remain viable in a quiescent state for long periods of time. Here, we review the latest experimental evidence shedding light on the biological processes that enable dormant tumor cells to endure the multiple stresses encountered at the metastatic site.
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Affiliation(s)
- Laura Vera-Ramirez
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Kent W Hunter
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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43
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Viral E6/E7 oncogene and cellular hexokinase 2 expression in HPV-positive cancer cell lines. Oncotarget 2017; 8:106342-106351. [PMID: 29290953 PMCID: PMC5739738 DOI: 10.18632/oncotarget.22463] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 10/27/2017] [Indexed: 11/25/2022] Open
Abstract
Oncogenic types of human papillomaviruses (HPVs) are major human carcinogens. Cancer cells typically exhibit metabolic alterations which support their malignant growth. These include an enhanced rate of aerobic glycolysis (‘Warburg effect’) which in cancer cells is often linked to an increased expression of the rate-limiting glycolytic enzyme Hexokinase 2 (HK2). Intriguingly, recent studies indicate that the HPV E6/E7 oncogenes cause the metabolic reprogramming in HPV-positive cancer cells by directly upregulating HK2 expression. Notably, however, these results were obtained upon ectopic overexpression of E6/E7. Here, we investigated whether HK2 levels are affected by the endogenous E6/E7 amounts present in HPV-positive cancer cell lines. RNA interference analyses reveal that the sustained E6/E7 expression is critical to maintain HK2 expression levels in HeLa cells. Mechanistically, this effect is linked to the E6/E7-dependent upregulation of HK2-stimulatory MYC expression and the E6/E7-induced downregulation of the HK2-inhibitory micro(mi)RNA miR-143-3p. Importantly, however, a stimulatory effect of E6/E7 on HK2 expression was observed only in HeLa among a panel of 8 different HPV-positive cervical and head and neck cancer cell lines. Thus, whereas these results support the notion that E6/E7 can increase HK2 expression, they argue against the concept that the viral oncogenes, at endogenous expression levels, commonly induce the metabolic switch of HPV-positive cancer cells towards aerobic glycolysis by directly or indirectly stimulating HK2 expression.
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44
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Hoppe-Seyler K, Bossler F, Braun JA, Herrmann AL, Hoppe-Seyler F. The HPV E6/E7 Oncogenes: Key Factors for Viral Carcinogenesis and Therapeutic Targets. Trends Microbiol 2017; 26:158-168. [PMID: 28823569 DOI: 10.1016/j.tim.2017.07.007] [Citation(s) in RCA: 238] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/12/2017] [Accepted: 07/28/2017] [Indexed: 10/19/2022]
Abstract
Human papillomavirus (HPV)-induced cancers are expected to remain a major health problem worldwide for decades. The growth of HPV-positive cancer cells depends on the sustained expression of the viral E6 and E7 oncogenes which act in concert with still poorly defined cellular alterations. E6/E7 constitute attractive therapeutic targets since E6/E7 inhibition rapidly induces senescence in HPV-positive cancer cells. This cellular response is linked to the reconstitution of the antiproliferative p53 and pRb pathways, and to prosenescent mTOR signaling. Hypoxic HPV-positive cancer cells could be a major obstacle for treatment strategies targeting E6/E7 since they downregulate E6/E7 but evade senescence through hypoxia-induced mTOR impairment. Prospective E6/E7 inhibitors may therefore benefit from a combination with treatment strategies directed against hypoxic tumor cells.
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Affiliation(s)
- Karin Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany
| | - Felicitas Bossler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany
| | - Julia A Braun
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany
| | - Anja L Herrmann
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany
| | - Felix Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers, German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
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45
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Hoppe-Seyler K, Mändl J, Adrian S, Kuhn BJ, Hoppe-Seyler F. Virus/Host Cell Crosstalk in Hypoxic HPV-Positive Cancer Cells. Viruses 2017; 9:v9070174. [PMID: 28678198 PMCID: PMC5537666 DOI: 10.3390/v9070174] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 06/22/2017] [Accepted: 06/29/2017] [Indexed: 12/16/2022] Open
Abstract
Oncogenic types of human papillomaviruses (HPVs) are major human carcinogens. The expression of the viral E6/E7 oncogenes plays a key role for HPV-linked oncogenesis. It recently has been found that low oxygen concentrations (“hypoxia”), as present in sub-regions of HPV-positive cancers, strongly affect the interplay between the HPV oncogenes and their transformed host cell. As a result, a state of dormancy is induced in hypoxic HPV-positive cancer cells, which is characterized by a shutdown of viral oncogene expression and a proliferative arrest that can be reversed by reoxygenation. In this review, these findings are put into the context of the current concepts of both HPV-linked carcinogenesis and of the effects of hypoxia on tumor biology. Moreover, we discuss the consequences for the phenotype of HPV-positive cancer cells as well as for their clinical behavior and response towards established and prospective therapeutic strategies.
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Affiliation(s)
- Karin Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers (F065), German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
| | - Julia Mändl
- Molecular Therapy of Virus-Associated Cancers (F065), German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
- Viral Transformation Mechanisms (F030), German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
| | - Svenja Adrian
- Molecular Therapy of Virus-Associated Cancers (F065), German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
| | - Bianca J Kuhn
- Molecular Therapy of Virus-Associated Cancers (F065), German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
| | - Felix Hoppe-Seyler
- Molecular Therapy of Virus-Associated Cancers (F065), German Cancer Research Center (DKFZ), D-69120 Heidelberg, Germany.
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46
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Mechanisms governing metastatic dormancy in breast cancer. Semin Cancer Biol 2017; 44:72-82. [PMID: 28344165 DOI: 10.1016/j.semcancer.2017.03.006] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/17/2017] [Accepted: 03/21/2017] [Indexed: 02/07/2023]
Abstract
Breast cancer is a systemic disease characterized by early dissemination of tumor cells to distant organs. In this foreign environment, tumor cells may stay in a dormant state as single cells or as micrometastases for many years before growing out into a macrometastatic lesion. As metastasis is the primary cause for breast cancer-related death, it is important to understand the mechanisms underlying the maintenance of dormancy and dormancy escape to find druggable targets to eradicate metastatic tumor cells. Metastatic dormancy is regulated by complex interactions between tumor cells and the local microenvironment. In addition, cancer-directed immunity and systemic instigation play a crucial role.
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