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Catalán-Castorena O, Garibay-Cerdenares OL, Illades-Aguiar B, Castillo-Sánchez R, Zubillaga-Guerrero MI, Leyva-Vazquez MA, Encarnacion-Guevara S, Flores-Alfaro E, Ramirez-Ruano M, del Carmen Alarcón-Romero L. Bioinformatics Analysis of Human Papillomavirus 16 Integration in Cervical Cancer: Changes in MAGI-1 Expression in Premalignant Lesions and Invasive Carcinoma. Cancers (Basel) 2024; 16:2225. [PMID: 38927930 PMCID: PMC11202195 DOI: 10.3390/cancers16122225] [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: 03/28/2024] [Revised: 06/05/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
HPV 16 integration is crucial for the onset and progression of premalignant lesions to invasive squamous cell carcinoma (ISCC) because it promotes the amplification of proto-oncogenes and the silencing of tumor suppressor genes; some of these are proteins with PDZ domains involved in homeostasis and cell polarity. Through a bioinformatics approach based on interaction networks, a group of proteins associated with HPV 16 infection, PDZ domains, and direct physical interaction with E6 and related to different hallmarks of cancer were identified. MAGI-1 was selected to evaluate the expression profile and subcellular localization changes in premalignant lesions and ISCC with HPV 16 in an integrated state in cervical cytology; the profile expression of MAGI-1 diminished according to lesion grade. Surprisingly, in cell lines CaSki and SiHa, the protein localization was cytoplasmic and nuclear. In contrast, in histological samples, a change in subcellular localization from the cytoplasm in low-grade squamous intraepithelial lesions (LSIL) to the nucleus in the high-grade squamous intraepithelial lesion (HSIL) was observed; in in situ carcinomas and ISCC, MAGI-1 expression was absent. In conclusion, MAGI-1 expression could be a potential biomarker for distinguishing those cells with normal morphology but with HPV 16 integrated from those showing morphology-related uterine cervical lesions associated with tumor progression.
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Affiliation(s)
- Oscar Catalán-Castorena
- Cytopathology and Histochemistry Research Laboratory, Faculty of Chemical and Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico; (O.C.-C.); (M.I.Z.-G.)
| | - Olga Lilia Garibay-Cerdenares
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico; (B.I.-A.); (M.A.L.-V.)
- CONAHCyT-Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico
| | - Berenice Illades-Aguiar
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico; (B.I.-A.); (M.A.L.-V.)
| | - Rocio Castillo-Sánchez
- Cell Biology Department, CINVESTAV-IPN Research Institute, Ciudad de México 07360, Mexico;
| | - Ma. Isabel Zubillaga-Guerrero
- Cytopathology and Histochemistry Research Laboratory, Faculty of Chemical and Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico; (O.C.-C.); (M.I.Z.-G.)
| | - Marco Antonio Leyva-Vazquez
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico; (B.I.-A.); (M.A.L.-V.)
| | - Sergio Encarnacion-Guevara
- Center for Genomic Sciences, National Autonomous University of Mexico, Cuernavaca 62210, Morelos, Mexico;
| | - Eugenia Flores-Alfaro
- Clinical and Molecular Epidemiology Research Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico;
| | - Mónica Ramirez-Ruano
- Functional Genomics and Proteomics Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico;
| | - Luz del Carmen Alarcón-Romero
- Cytopathology and Histochemistry Research Laboratory, Faculty of Chemical and Biological Sciences, Autonomous University of Guerrero, Chilpancingo 39070, Guerrero, Mexico; (O.C.-C.); (M.I.Z.-G.)
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Luk IS, Bridgwater CM, Yu A, Boila LD, Yáñez-Bartolomé M, Lampano AE, Hulahan TS, Boukhali M, Kathiresan M, Macarulla T, Kenerson HL, Yamamoto N, Sokolov D, Engstrom IA, Sullivan LB, Lampe PD, Cooper JA, Yeung RS, Tian TV, Haas W, Saha SK, Kugel S. SRC inhibition enables formation of a growth suppressive MAGI1-PP2A complex in isocitrate dehydrogenase-mutant cholangiocarcinoma. Sci Transl Med 2024; 16:eadj7685. [PMID: 38748774 PMCID: PMC11218711 DOI: 10.1126/scitranslmed.adj7685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 04/25/2024] [Indexed: 07/04/2024]
Abstract
Intrahepatic cholangiocarcinoma (ICC) is an aggressive bile duct malignancy that frequently exhibits isocitrate dehydrogenase (IDH1/IDH2) mutations. Mutant IDH (IDHm) ICC is dependent on SRC kinase for growth and survival and is hypersensitive to inhibition by dasatinib, but the molecular mechanism underlying this sensitivity is unclear. We found that dasatinib reduced p70 S6 kinase (S6K) and ribosomal protein S6 (S6), leading to substantial reductions in cell size and de novo protein synthesis. Using an unbiased phosphoproteomic screen, we identified membrane-associated guanylate kinase, WW, and PDZ domain containing 1 (MAGI1) as an SRC substrate in IDHm ICC. Biochemical and functional assays further showed that SRC inhibits a latent tumor-suppressing function of the MAGI1-protein phosphatase 2A (PP2A) complex to activate S6K/S6 signaling in IDHm ICC. Inhibiting SRC led to activation and increased access of PP2A to dephosphorylate S6K, resulting in cell death. Evidence from patient tissue and cell line models revealed that both intrinsic and extrinsic resistance to dasatinib is due to increased phospho-S6 (pS6). To block pS6, we paired dasatinib with the S6K/AKT inhibitor M2698, which led to a marked reduction in pS6 in IDHm ICC cell lines and patient-derived organoids in vitro and substantial growth inhibition in ICC patient-derived xenografts in vivo. Together, these results elucidated the mechanism of action of dasatinib in IDHm ICC, revealed a signaling complex regulating S6K phosphorylation independent of mTOR, suggested markers for dasatinib sensitivity, and described a combination therapy for IDHm ICC that may be actionable in the clinic.
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Affiliation(s)
- Iris S. Luk
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | | | - Angela Yu
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Liberalis D. Boila
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Mariana Yáñez-Bartolomé
- Preclinical and Translational Research Program, Vall d’Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Aaron E. Lampano
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Taylor S. Hulahan
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Myriam Boukhali
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Meena Kathiresan
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Teresa Macarulla
- Preclinical and Translational Research Program, Vall d’Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
- Gastrointestinal and Endocrine Tumor Unit, Hospital Universitari Vall d’Hebron, Vall d’Hebron Barcelona Hospital Campus, 08035 Barcelona, Spain
| | - Heidi L. Kenerson
- Department of Surgery, University of Washington, Seattle, WA 98195, USA
| | - Naomi Yamamoto
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
- Medical Scientist Training Program, University of Washington, Seattle, WA 98195, USA
| | - David Sokolov
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Ian A. Engstrom
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Lucas B. Sullivan
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Paul D. Lampe
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Jonathan A. Cooper
- Basic Sciences Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Raymond S. Yeung
- Department of Surgery, University of Washington, Seattle, WA 98195, USA
| | - Tian V. Tian
- Preclinical and Translational Research Program, Vall d’Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Wilhelm Haas
- Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA 02114, USA
| | - Supriya K. Saha
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
| | - Sita Kugel
- Human Biology Division, Fred Hutchinson Cancer Center, Seattle, WA 98109, USA
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Javorsky A, Humbert PO, Kvansakul M. Viral manipulation of cell polarity signalling. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119536. [PMID: 37437846 DOI: 10.1016/j.bbamcr.2023.119536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/24/2023] [Accepted: 07/04/2023] [Indexed: 07/14/2023]
Abstract
Cell polarity refers to the asymmetric distribution of biomacromolecules that enable the correct orientation of a cell in a particular direction. It is thus an essential component for appropriate tissue development and function. Viral infections can lead to dysregulation of polarity. This is associated with a poor prognosis due to viral interference with core cell polarity regulatory scaffolding proteins that often feature PDZ (PSD-95, DLG, and ZO-1) domains including Scrib, Dlg, Pals1, PatJ, Par3 and Par6. PDZ domains are also promiscuous, binding to several different partners through their C-terminal region which contain PDZ-binding motifs (PBM). Numerous viruses encode viral effector proteins that target cell polarity regulators for their benefit and include papillomaviruses, flaviviruses and coronaviruses. A better understanding of the mechanisms of action utilised by viral effector proteins to subvert host cell polarity sigalling will provide avenues for future therapeutic intervention, while at the same time enhance our understanding of cell polarity regulation and its role tissue homeostasis.
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Affiliation(s)
- Airah Javorsky
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Patrick O Humbert
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia; Research Centre for Molecular Cancer Prevention, La Trobe University, Melbourne, Victoria 3086, Australia; Department of Biochemistry & Pharmacology, University of Melbourne, Melbourne, Victoria 3010, Australia; Department of Clinical Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Marc Kvansakul
- Department of Biochemistry & Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia; Research Centre for Molecular Cancer Prevention, La Trobe University, Melbourne, Victoria 3086, Australia.
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Zhang Y, Wang L, Li J, Bao Q, Zhang Y, Chang G, Chen G. Association analysis of polymorphisms of candidate genes for laying traits in Yangzhou geese. Gene 2023; 862:147249. [PMID: 36738899 DOI: 10.1016/j.gene.2023.147249] [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: 07/27/2022] [Revised: 01/18/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
Egg production is an important economic trait in the Chinese goose industry. Due to the low heritability of annual egg production traits in geese, large-scale individual selection based on annual egg production measurements cannot be carried out. Therefore, new selection methods must be applied for large-scale early selections. To screen for effective molecular markers for early Yangzhou geese selection, the genotypes and gene frequencies of mutated loci of five candidate genes related to egg production, MAGI-1, ACSF2, ASTN2, KIAA1462, and ARHGAP21, were detected and analyzed by PCR-direct sequencing.Furthermore, correlation analysis was performed with annual egg mass and body weight at the point of lay and egg weight, and the results were as follows:Magi-1 (Record-106975)was A > G, ACSF2 (Record-106582)was A > C, ASTN2 (Record-111407)was A > T, KIAA1462 (Record-134172)was A > T, and the base of ARHGAP21 (Record-112359) was G > T. At all the five loci above, the Yangzhou geese population followed the Hardy-Weinberg equilibrium (P > 0.05). The results of the association analysis between different genotypes and production performance showed no significant differences in annual egg production, body weight at the point of lay, and egg weight, among different genotypes (P > 0.05) at the mutation loci of MAGI-1 and ASTN2. At the ACSF2 and KIAA1462, the annual egg production of AC was significantly higher than that of AA and CC (P < 0.05), the annual egg production of TT was significantly higher than that of AA (P < 0.05), and there were no significant differences in body weight at the point of lay and egg weight, among the three genotypes (P > 0.05). At ARHGAP21, the body weight at the lay point of the TT genotype was the highest, which was significantly higher than that of GG (P < 0.05); however, there was no significant difference with the heterozygous GT genotype for this trait (P > 0.05). Therefore, Genotype AC at ACSF2 and genotype TT at KIAA1462 could be used as favorable genotypes for egg production, and genotype TT at ARHGAP21 could be used as a favorable genotype for weight in Yangzhou geese.
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Affiliation(s)
- Yang Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China
| | - Laidi Wang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China
| | - Jijie Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China
| | - Qiang Bao
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China
| | - Yong Zhang
- Yangzhou Tiange Goose Company Limited, Yangzhou, People's Republic of China
| | - Guobin Chang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China
| | - Guohong Chen
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People's Republic of China.
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Boon SS, Lee YC, Yip KL, Luk HY, Xiao C, Yim MK, Chen Z, Chan PKS. Interaction between Human Papillomavirus-Encoded E6 Protein and AurB Induces Cell Immortalization and Proliferation-A Potential Target of Intervention. Cancers (Basel) 2023; 15:cancers15092465. [PMID: 37173932 PMCID: PMC10177266 DOI: 10.3390/cancers15092465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 05/15/2023] Open
Abstract
The human papillomavirus E6 and E7 oncoproteins interact with a different subset of host proteins, leading to dysregulation of the apoptotic, cell cycle, and signaling pathways. In this study, we identified, for the first time, that Aurora kinase B (AurB) is a bona fide interacting partner of E6. We systematically characterized the AurB-E6 complex formation and its consequences in carcinogenesis using a series of in vitro and cell-based assays. We also assessed the efficacy of Aurora kinase inhibitors in halting HPV-mediated carcinogenesis using in vitro and in vivo models. We showed that AurB activity was elevated in HPV-positive cells, and this correlated positively with the E6 protein level. E6 interacted directly with AurB in the nucleus or mitotic cells. A previously unidentified region of E6, located upstream of C-terminal E6-PBM, was important for AurB-E6 complex formation. AurB-E6 complex led to reduced AurB kinase activity. However, the AurB-E6 complex increased the hTERT protein level and its telomerase activity. On the other hand, AurB inhibition led to the inhibition of telomerase activity, cell proliferation, and tumor formation, even though this may occur in an HPV-independent manner. In summary, this study dissected the molecular mechanism of how E6 recruits AurB to induce cell immortalization and proliferation, leading to the eventual cancer development. Our findings revealed that the treatment of AZD1152 exerted a non-specific anti-tumor effect. Hence, a continuous effort to seek a specific and selective inhibitor that can halt HPV-mediated carcinogenesis should be warranted.
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Affiliation(s)
- Siaw Shi Boon
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Yin Ching Lee
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Ka Lai Yip
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Ho Yin Luk
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Chuanyun Xiao
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Man Kin Yim
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Zigui Chen
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
| | - Paul Kay Sheung Chan
- Department of Microbiology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China
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Collins QP, Grunsted MJ, Arcila D, Xiong Y, Padash Barmchi M. Transcriptomic analysis provides insight into the mechanism of IKKβ-mediated suppression of HPV18E6-induced cellular abnormalities. G3 (BETHESDA, MD.) 2023; 13:jkad020. [PMID: 36722216 PMCID: PMC10085804 DOI: 10.1093/g3journal/jkad020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 09/12/2022] [Accepted: 01/07/2023] [Indexed: 02/02/2023]
Abstract
High-risk human papillomaviruses (HPVs) 16 and 18 are responsible for more than 70% of cervical cancers and majority of other HPV-associated cancers world-wide. Current treatments for these cancers have limited efficacy, which in turn has resulted in disease recurrence and poor survival rates in advanced disease stages. Hence, there is a significant need for development of novel molecularly-targeted therapeutics. This can only be achieved through improved understanding of disease mechanism. Recently, we developed a Drosophila model of HPV18E6 plus human E3 ubiquitin ligase (hUBE3A) and demonstrated that the E6-induced cellular abnormalities are conserved between humans and flies. Subsequently, we demonstrated that reduced level and activity of IKKβ, a regulator of NF-κB, suppresses the cellular abnormalities induced by E6 oncoprotein and that the interaction of IKKβ and E6 is conserved in human cells. In this study, we performed transcriptomic analysis to identify differentially expressed genes that play a role in IKKβ-mediated suppression of E6-induced defects. Transcriptome analysis identified 215 genes whose expression was altered due to reduced levels of IKKβ. Of these 215 genes, 151 genes showed annotations. These analyses were followed by functional genetic interaction screen using RNAi, overexpression, and mutant fly strains for identified genes. The screen identified several genes including genes involved in Hippo and Toll pathways as well as junctional complexes whose downregulation or upregulation resulted in alterations of E6-induced defects. Subsequently, RT-PCR analysis was performed for validation of altered gene expression level for a few representative genes. Our results indicate an involvement for Hippo and Toll pathways in IKKβ-mediated suppression of E6 + hUBE3A-induced cellular abnormalities. Therefore, this study enhances our understanding of the mechanisms underlying HPV-induced cancer and can potentially lead to identification of novel drug targets for cancers associated with HPV.
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Affiliation(s)
- Quincy P Collins
- Department of Biology, University of Oklahoma, Norman, OK 73019, USA
| | | | - Dahiana Arcila
- Department of Biology, University of Oklahoma, Norman, OK 73019, USA
- Department of Ichthyology, Sam Noble Oklahoma Museum of Natural History, Norman, OK 73019, USA
| | - Yi Xiong
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK 73019, USA
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Viral subversion of the cell polarity regulator Scribble. Biochem Soc Trans 2023; 51:415-426. [PMID: 36606695 PMCID: PMC9987997 DOI: 10.1042/bst20221067] [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: 10/19/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 01/07/2023]
Abstract
Scribble is a scaffolding protein that regulates key events such as cell polarity, tumorigenesis and neuronal signalling. Scribble belongs to the LAP family which comprise of 16 Leucine Rich Repeats (LRR) at the N-terminus, two LAP Specific Domains (LAPSD) and four PSD-95/Discs-large/ZO-1 (PDZ) domains at the C-terminus. The four PDZ domains have been shown to be key for a range of protein-protein interactions and have been identified to be crucial mediators for the vast majority of Scribble interactions, particularly via PDZ Binding Motifs (PBMs) often found at the C-terminus of interacting proteins. Dysregulation of Scribble is associated with poor prognosis in viral infections due to subversion of multiple cell signalling pathways by viral effector proteins. Here, we review the molecular details of the interplay between Scribble and viral effector proteins that provide insight into the potential modes of regulation of Scribble mediated polarity signalling.
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Tilston-Lunel AM, Varelas X. Polarity in respiratory development, homeostasis and disease. Curr Top Dev Biol 2023; 154:285-315. [PMID: 37100521 DOI: 10.1016/bs.ctdb.2023.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
The respiratory system is composed of a multitude of cells that organize to form complex branched airways that end in alveoli, which respectively function to guide air flow and mediate gas exchange with the bloodstream. The organization of the respiratory sytem relies on distinct forms of cell polarity, which guide lung morphogenesis and patterning in development and provide homeostatic barrier protection from microbes and toxins. The stability of lung alveoli, the luminal secretion of surfactants and mucus in the airways, and the coordinated motion of multiciliated cells that generate proximal fluid flow, are all critical functions regulated by cell polarity, with defects in polarity contributing to respiratory disease etiology. Here, we summarize the current knowledge of cell polarity in lung development and homeostasis, highlighting key roles for polarity in alveolar and airway epithelial function and outlining relationships with microbial infections and diseases, such as cancer.
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Hashemi L, Ormsbee ME, Patel PJ, Nielson JA, Ahlander J, Padash Barmchi M. A Drosophila model of HPV16-induced cancer reveals conserved disease mechanism. PLoS One 2022; 17:e0278058. [PMID: 36508448 PMCID: PMC9744332 DOI: 10.1371/journal.pone.0278058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/09/2022] [Indexed: 12/14/2022] Open
Abstract
High-risk human papillomaviruses (HR-HPVs) cause almost all cervical cancers and a significant number of vaginal, vulvar, penile, anal, and oropharyngeal cancers. HPV16 and 18 are the most prevalent types among HR-HPVs and together cause more than 70% of all cervical cancers. Low vaccination rate and lack of molecularly-targeted therapeutics for primary therapy have led to a slow reduction in cervical cancer incidence and high mortality rate. Hence, creating new models of HPV-induced cancer that can facilitate understanding of the disease mechanism and identification of key cellular targets of HPV oncogenes are important for development of new interventions. Here in this study, we used the tissue-specific expression technique, Gal4-UAS, to establish the first Drosophila model of HPV16-induced cancer. Using this technique, we expressed HPV16 oncogenes E5, E6, E7 and the human E3 ligase (hUBE3A) specifically in the epithelia of Drosophila eye, which allows simple phenotype scoring without affecting the viability of the organism. We found that, as in human cells, hUBE3A is essential for cellular abnormalities caused by HPV16 oncogenes in flies. Several proteins targeted for degradation by HPV16 oncoproteins in human cells were also reduced in the Drosophila epithelial cells. Cell polarity and adhesion were compromised, resulting in impaired epithelial integrity. Cells did not differentiate to the specific cell types of ommatidia, but instead were transformed into neuron-like cells. These cells extended axon-like structures to connect to each other and exhibited malignant behavior, migrating away to distant sites. Our findings suggest that given the high conservation of genes and signaling pathways between humans and flies, the Drosophila model of HPV16- induced cancer could serve as an excellent model for understanding the disease mechanism and discovery of novel molecularly-targeted therapeutics.
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Affiliation(s)
- Lydia Hashemi
- Department of Biology, University of Oklahoma, Norman, OK, United States of America
| | - McKenzi E. Ormsbee
- Department of Biology, University of Oklahoma, Norman, OK, United States of America
| | - Prashant J. Patel
- Department of Biology, University of Oklahoma, Norman, OK, United States of America
| | - Jacquelyn A. Nielson
- Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA, United States of America
| | - Joseph Ahlander
- Department of Natural Sciences, Northeastern State University, Broken Arrow, OK, United States of America
| | - Mojgan Padash Barmchi
- Department of Biology, University of Oklahoma, Norman, OK, United States of America
- * E-mail:
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Dizanzo MP, Bugnon Valdano M, Basukala O, Banks L, Gardiol D. Novel effect of the high risk-HPV E7 CKII phospho-acceptor site on polarity protein expression. BMC Cancer 2022; 22:1015. [PMID: 36153517 PMCID: PMC9509620 DOI: 10.1186/s12885-022-10105-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 09/19/2022] [Indexed: 11/10/2022] Open
Abstract
Background Oncogenic Human Papillomaviruses (HPVs) base their transforming potential on the action of both E6 and E7 viral oncoproteins, which perform cooperative or antagonistic actions and thus interfere with a variety of relevant cellular targets. Among them, the expression of some PDZ-containing polarity proteins, as DLG1 and hScrib, is altered during the HPV life cycle and the consequent malignant transformation. Together with the well-established interference of E6 with PDZ proteins, we have recently shown that E7 viral oncoprotein is also responsible for the changes in abundance and localization of DLG1 observed in HPV-associated lesions. Given that the mechanisms involved remained only partially understood, we here thoroughly analyse the contribution of a crucial E7 post-translational modification: its CKII-dependent phosphorylation. Moreover, we extended our studies to hScrib, in order to investigate possible conserved regulatory events among diverse PDZ targets of HPV. Methods We have acutely analysed the expression of DLG1 and hScrib in restrictive conditions for E7 phosphorylation by CKII in epithelial culture cells by western blot and confocal fluorescence microscopy. We made use of genome-edited HPV-positive cells, specific inhibitors of CKII activity and transient expression of the viral oncoproteins, including a mutant version of E7. Results We here demonstrate that the functional phosphorylation of E7 oncoprotein by the CKII cellular kinase, a key regulatory event for its activities, is also crucial to counteract the E6-mediated degradation of the PDZ-polarity protein DLG1 and to promote its subcellular redistribution. Moreover, we show that the CKII-dependent phosphorylation of E7 is able to control the expression of another PDZ target of HPV: hScrib. Remarkably, we found this is a shared feature among different oncogenic HPV types, suggesting a common path towards viral pathogenesis. Conclusions The present study sheds light into the mechanisms behind the misexpression of PDZ-polarity proteins during HPV infections. Our findings stress the relevance of the CKII-mediated regulation of E7 activities, providing novel insights into the joint action of HPV oncoproteins and further indicating a conserved and most likely crucial mechanism during the viral life cycle and the associated transformation. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-10105-5.
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Delgado-Diaz DJ, Jesaveluk B, Hayward JA, Tyssen D, Alisoltani A, Potgieter M, Bell L, Ross E, Iranzadeh A, Allali I, Dabee S, Barnabas S, Gamieldien H, Blackburn JM, Mulder N, Smith SB, Edwards VL, Burgener AD, Bekker LG, Ravel J, Passmore JAS, Masson L, Hearps AC, Tachedjian G. Lactic acid from vaginal microbiota enhances cervicovaginal epithelial barrier integrity by promoting tight junction protein expression. MICROBIOME 2022; 10:141. [PMID: 36045402 PMCID: PMC9429363 DOI: 10.1186/s40168-022-01337-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 07/30/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Women with a cervicovaginal microbiota dominated by Lactobacillus spp. are at reduced risk of acquiring sexually transmitted infections including HIV, but the biological mechanisms involved remain poorly defined. Here, we performed metaproteomics on vaginal swab samples from young South African women (n = 113) and transcriptomics analysis of cervicovaginal epithelial cell cultures to examine the ability of lactic acid, a metabolite produced by cervicovaginal lactobacilli, to modulate genital epithelial barrier function. RESULTS Compared to women with Lactobacillus-depleted microbiota, women dominated by vaginal lactobacilli exhibit higher abundance of bacterial lactate dehydrogenase, a key enzyme responsible for lactic acid production, which is independently associated with an increased abundance of epithelial barrier proteins. Physiological concentrations of lactic acid enhance epithelial cell culture barrier integrity and increase intercellular junctional molecule expression. CONCLUSIONS These findings reveal a novel ability of vaginal lactic acid to enhance genital epithelial barrier integrity that may help prevent invasion by sexually transmitted pathogens. Video abstract.
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Affiliation(s)
- David Jose Delgado-Diaz
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia
- Department of Microbiology, Monash University, Clayton, VIC, 3168, Australia
| | - Brianna Jesaveluk
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia
- Department of Microbiology, Monash University, Clayton, VIC, 3168, Australia
| | - Joshua A Hayward
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia
- Department of Microbiology, Monash University, Clayton, VIC, 3168, Australia
| | - David Tyssen
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia
| | - Arghavan Alisoltani
- Division of Medical Virology, Department of Pathology, University of Cape Town, Cape Town, 7925, South Africa
- Division of Biomedical Sciences, University of California Riverside School of Medicine, Riverside, CA, 92521, USA
| | - Matthys Potgieter
- Computational Biology Division, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa
- Division of Chemical and Systems Biology, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa
| | - Liam Bell
- Centre for Proteomic and Genomic Research, Cape Town, 7925, South Africa
| | - Elizabeth Ross
- Centre for Proteomic and Genomic Research, Cape Town, 7925, South Africa
| | - Arash Iranzadeh
- Computational Biology Division, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa
| | - Imane Allali
- Laboratory of Human Pathologies Biology, Department of Biology, Faculty of Sciences, Mohammed V University in Rabat, 1014, Rabat, Morocco
| | - Smritee Dabee
- Center for Global Infectious Disease Research, Seattle Children's Research Institute, Seattle, WA, 98101, USA
| | - Shaun Barnabas
- Family Centre for Research with Ubuntu, Stellenbosch University, Cape Town, 7505, South Africa
| | - Hoyam Gamieldien
- Division of Medical Virology, Department of Pathology, University of Cape Town, Cape Town, 7925, South Africa
| | - Jonathan M Blackburn
- Division of Chemical and Systems Biology, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa
- Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, Cape Town, 7925, South Africa
| | - Nicola Mulder
- Computational Biology Division, Department of Integrative Biomedical Sciences, University of Cape Town, Cape Town, 7925, South Africa
- Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, Cape Town, 7925, South Africa
- Centre for Infectious Diseases Research (CIDRI) in Africa Wellcome Trust Centre, University of Cape Town, Cape Town, 7925, South Africa
| | - Steven B Smith
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Vonetta L Edwards
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Adam D Burgener
- Center for Global Health and Diseases, Case Western Reserve University, Cleveland, OH, 44106, USA
- Department of Obstetrics and Gynecology, University of Manitoba, Winnipeg, Canada
- Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Linda-Gail Bekker
- Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, Cape Town, 7925, South Africa
- Desmond Tutu HIV Centre, University of Cape Town, Cape Town, 7925, South Africa
| | - Jacques Ravel
- Institute for Genome Sciences, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, 21201, USA
| | - Jo-Ann S Passmore
- Division of Medical Virology, Department of Pathology, University of Cape Town, Cape Town, 7925, South Africa
- Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, Cape Town, 7925, South Africa
- Centre for the AIDS Programme of Research in South Africa, Durban, 4013, South Africa
- National Health Laboratory Service, Cape Town, 7925, South Africa
| | - Lindi Masson
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia
- Division of Medical Virology, Department of Pathology, University of Cape Town, Cape Town, 7925, South Africa
- Institute of Infectious Disease and Molecular Medicine (IDM), University of Cape Town, Cape Town, 7925, South Africa
- Centre for the AIDS Programme of Research in South Africa, Durban, 4013, South Africa
- Central Clinical School, Monash University, Melbourne, 3004, Australia
| | - Anna C Hearps
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia
- Central Clinical School, Monash University, Melbourne, 3004, Australia
| | - Gilda Tachedjian
- Life Sciences Discipline, Burnet Institute, 85 Commercial Road, Melbourne, VIC, 3004, Australia.
- Department of Microbiology, Monash University, Clayton, VIC, 3168, Australia.
- Department of Microbiology and Immunology at the Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, VIC, 3010, Australia.
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12
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Excoffon KJDA, Avila CL, Alghamri MS, Kolawole AO. The magic of MAGI-1: A scaffolding protein with multi signalosomes and functional plasticity. Biol Cell 2022; 114:185-198. [PMID: 35389514 DOI: 10.1111/boc.202200014] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/01/2022] [Accepted: 04/04/2022] [Indexed: 11/29/2022]
Abstract
MAGI-1 is a critical cellular scaffolding protein with over 110 different cellular and microbial protein interactors. Since the discovery of MAGI-1 in 1997, MAGI-1 has been implicated in diverse cellular functions such as polarity, cell-cell communication, neurological processes, kidney function, and a host of diseases including cancer and microbial infection. Additionally, MAGI-1 has undergone nomenclature changes in response to the discovery of an additional PDZ domain, leading to lack of continuity in the literature. We address the nomenclature of MAGI-1 as well as summarize many of the critical functions of the known interactions. Given the importance of many of the interactors, such as human papillomavirus E6, the Coxsackievirus and adenovirus receptor (CAR), and PTEN, the enhancement or disruption of MAGI-based interactions has the potential to affect cellular functions that can potentially be harnessed as a therapeutic strategy for a variety of diseases.
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Affiliation(s)
| | - Christina L Avila
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
| | - Mahmoud S Alghamri
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
| | - Abimbola O Kolawole
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
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13
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King RE, Ward-Shaw ET, Hu R, Lambert PF, Thibeault SL. Expanded Basal Compartment and Disrupted Barrier in Vocal Fold Epithelium Infected with Mouse Papillomavirus MmuPV1. Viruses 2022; 14:v14051059. [PMID: 35632798 PMCID: PMC9146965 DOI: 10.3390/v14051059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/07/2022] [Accepted: 05/11/2022] [Indexed: 02/01/2023] Open
Abstract
Laryngeal infection with low-risk human papillomaviruses can cause recurrent respiratory papillomatosis (RRP), a disease with severe effects on vocal fold epithelium resulting in impaired voice function and communication. RRP research has been stymied by limited preclinical models. We recently reported a murine model of laryngeal MmuPV1 infection and disease in immunodeficient mice. In the current study, we compare quantitative and qualitative measures of epithelial proliferation, apoptosis, differentiation, and barrier between mice with MmuPV1-induced disease of the larynx and surrounding tissues and equal numbers of uninfected controls. Findings supported our hypothesis that laryngeal MmuPV1 infection recapitulates many features of RRP. Like RRP, MmuPV1 increased proliferation in infected vocal fold epithelium, expanded the basal compartment of cells, decreased differentiated cells, and altered cell–cell junctions and basement membrane. Effects of MmuPV1 on apoptosis were equivocal, as with RRP. Barrier markers resembled human neoplastic disease in severe MmuPV1-induced disease. We conclude that MmuPV1 infection of the mouse larynx provides a useful, if imperfect, preclinical model for RRP that will facilitate further study and treatment development for this intractable and devastating disease.
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Affiliation(s)
- Renee E. King
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI 53705, USA; (R.E.K.); (E.T.W.-S.); (P.F.L.)
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Ella T. Ward-Shaw
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI 53705, USA; (R.E.K.); (E.T.W.-S.); (P.F.L.)
| | - Rong Hu
- Department of Pathology and Laboratory Medicine, University of Wisconsin-Madison, Madison, WI 53705, USA;
| | - Paul F. Lambert
- McArdle Laboratory for Cancer Research, Department of Oncology, University of Wisconsin-Madison, Madison, WI 53705, USA; (R.E.K.); (E.T.W.-S.); (P.F.L.)
| | - Susan L. Thibeault
- Department of Surgery, University of Wisconsin-Madison, Madison, WI 53705, USA
- Correspondence:
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14
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Yang Z, Liu H, Song R, Lu W, Wang H, Gu S, Cao X, Chen Y, Liang J, Qin Q, Yang X, Feng D, He J. Reduced MAGI3 level by HPV18E6 contributes to Wnt/β-catenin signaling activation and cervical cancer progression. FEBS Open Bio 2021; 11:3051-3062. [PMID: 34510826 PMCID: PMC8564337 DOI: 10.1002/2211-5463.13298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 07/19/2021] [Accepted: 09/10/2021] [Indexed: 11/17/2022] Open
Abstract
Human papillomavirus type 18 (HPV18) has high carcinogenic power in invasive cervical cancer (ICC) development. However, the underlying mechanism remains elusive. The carcinogenic properties of HPV18 require the PDZ‐binding motif of its E6 oncoprotein (HPV18 E6) to degrade its target PSD95/Dlg/ZO‐1 (PDZ) proteins. In this study, we demonstrated that the PDZ protein membrane‐associated guanylate kinase, WW and PDZ domain containing 3 (MAGI3) inhibited the Wnt/β‐catenin pathway, and subsequently cervical cancer (CC) cell migration and invasion, via decreasing β‐catenin levels. By reducing MAGI3 protein levels, HPV18 E6 promoted CC cell migration and invasion through activation of Wnt/β‐catenin signaling. Furthermore, HPV18 rather than HPV16 was preferentially associated with the downregulation of MAGI3 and activation of the Wnt/β‐catenin pathway in CC. These findings shed light on the mechanism that gives HPV18 its high carcinogenic potential in CC progression.
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Affiliation(s)
- Zhuoli Yang
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Hua Liu
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Ran Song
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Wenxiu Lu
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Haibo Wang
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Siyu Gu
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Xuedi Cao
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Yibin Chen
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Jihuan Liang
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Qiong Qin
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Xiaomei Yang
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
| | - Duiping Feng
- Department of Interventional RadiologyFirst Hospital of Shanxi Medical UniversityTaiyuanChina
| | - Junqi He
- Department of Biochemistry and Molecular BiologyBeijing Key Laboratory for Tumor Invasion and MetastasisCapital Medical UniversityBeijingChina
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15
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Kotelevets L, Chastre E. A New Story of the Three Magi: Scaffolding Proteins and lncRNA Suppressors of Cancer. Cancers (Basel) 2021; 13:4264. [PMID: 34503076 PMCID: PMC8428372 DOI: 10.3390/cancers13174264] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 12/16/2022] Open
Abstract
Scaffolding molecules exert a critical role in orchestrating cellular response through the spatiotemporal assembly of effector proteins as signalosomes. By increasing the efficiency and selectivity of intracellular signaling, these molecules can exert (anti/pro)oncogenic activities. As an archetype of scaffolding proteins with tumor suppressor property, the present review focuses on MAGI1, 2, and 3 (membrane-associated guanylate kinase inverted), a subgroup of the MAGUK protein family, that mediate networks involving receptors, junctional complexes, signaling molecules, and the cytoskeleton. MAGI1, 2, and 3 are comprised of 6 PDZ domains, 2 WW domains, and 1 GUK domain. These 9 protein binding modules allow selective interactions with a wide range of effectors, including the PTEN tumor suppressor, the β-catenin and YAP1 proto-oncogenes, and the regulation of the PI3K/AKT, the Wnt, and the Hippo signaling pathways. The frequent downmodulation of MAGIs in various human malignancies makes these scaffolding molecules and their ligands putative therapeutic targets. Interestingly, MAGI1 and MAGI2 genetic loci generate a series of long non-coding RNAs that act as a tumor promoter or suppressor in a tissue-dependent manner, by selectively sponging some miRNAs or by regulating epigenetic processes. Here, we discuss the different paths followed by the three MAGIs to control carcinogenesis.
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Affiliation(s)
- Larissa Kotelevets
- Sorbonne Université, INSERM, UMR_S938, Centre de Recherche Saint-Antoine (CRSA), 75012 Paris, France
| | - Eric Chastre
- Sorbonne Université, INSERM, UMR_S938, Centre de Recherche Saint-Antoine (CRSA), 75012 Paris, France
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16
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MAGI1, a Scaffold Protein with Tumor Suppressive and Vascular Functions. Cells 2021; 10:cells10061494. [PMID: 34198584 PMCID: PMC8231924 DOI: 10.3390/cells10061494] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/04/2021] [Accepted: 06/08/2021] [Indexed: 12/13/2022] Open
Abstract
MAGI1 is a cytoplasmic scaffolding protein initially identified as a component of cell-to-cell contacts stabilizing cadherin-mediated cell–cell adhesion in epithelial and endothelial cells. Clinical-pathological and experimental evidence indicates that MAGI1 expression is decreased in some inflammatory diseases, and also in several cancers, including hepatocellular carcinoma, colorectal, cervical, breast, brain, and gastric cancers and appears to act as a tumor suppressor, modulating the activity of oncogenic pathways such as the PI3K/AKT and the Wnt/β-catenin pathways. Genomic mutations and other mechanisms such as mechanical stress or inflammation have been described to regulate MAGI1 expression. Intriguingly, in breast and colorectal cancers, MAGI1 expression is induced by non-steroidal anti-inflammatory drugs (NSAIDs), suggesting a role in mediating the tumor suppressive activity of NSAIDs. More recently, MAGI1 was found to localize at mature focal adhesion and to regulate integrin-mediated adhesion and signaling in endothelial cells. Here, we review MAGI1′s role as scaffolding protein, recent developments in the understanding of MAGI1 function as tumor suppressor gene, its role in endothelial cells and its implication in cancer and vascular biology. We also discuss outstanding questions about its regulation and potential translational implications in oncology.
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17
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Alghamri MS, Sharma P, Williamson TL, Readler JM, Yan R, Rider SD, Hostetler HA, Cool DR, Kolawole AO, Excoffon KJDA. MAGI-1 PDZ2 Domain Blockade Averts Adenovirus Infection via Enhanced Proteolysis of the Apical Coxsackievirus and Adenovirus Receptor. J Virol 2021; 95:e0004621. [PMID: 33762416 PMCID: PMC8437357 DOI: 10.1128/jvi.00046-21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/18/2021] [Indexed: 12/14/2022] Open
Abstract
Adenoviruses (AdVs) are etiological agents of gastrointestinal, heart, eye, and respiratory tract infections that can be lethal for immunosuppressed people. Many AdVs use the coxsackievirus and adenovirus receptor (CAR) as a primary receptor. The CAR isoform resulting from alternative splicing that includes the eighth exon, CAREx8, localizes to the apical surface of polarized epithelial cells and is responsible for the initiation of AdV infection. We have shown that the membrane level of CAREx8 is tightly regulated by two MAGI-1 PDZ domains, PDZ2 and PDZ4, resulting in increased or decreased AdV transduction, respectively. We hypothesized that targeting the interactions between the MAGI-1 PDZ2 domain and CAREx8 would decrease the apical CAREx8 expression level and prevent AdV infection. Decoy peptides that target MAGI-1 PDZ2 were synthesized (TAT-E6 and TAT-NET1). PDZ2 binding peptides decreased CAREx8 expression and reduced AdV transduction. CAREx8 degradation was triggered by the activation of the regulated intramembrane proteolysis (RIP) pathway through a disintegrin and metalloproteinase (ADAM17) and γ-secretase. Further analysis revealed that ADAM17 interacts directly with the MAGI-1 PDZ3 domain, and blocking the PDZ2 domain enhanced the accessibility of ADAM17 to the substrate (CAREx8). Finally, we validated the efficacy of TAT-PDZ2 peptides in protecting the epithelia from AdV transduction in vivo using a novel transgenic animal model. Our data suggest that TAT-PDZ2 binding peptides are novel anti-AdV molecules that act by enhanced RIP of CAREx8 and decreased AdV entry. This strategy has additional translational potential for targeting other viral receptors that have PDZ binding domains, such as the angiotensin-converting enzyme 2 receptor. IMPORTANCE Adenovirus is a common threat in immunosuppressed populations and military recruits. There are no currently approved treatments/prophylactic agents that protect from most AdV infections. Here, we developed peptide-based small molecules that can suppress AdV infection of polarized epithelia by targeting the AdV receptor, coxsackievirus and adenovirus receptor (CAREx8). The newly discovered peptides target a specific PDZ domain of the CAREx8-interacting protein MAGI-1 and decrease AdV transduction in multiple polarized epithelial models. Peptide-induced CAREx8 degradation is triggered by extracellular domain (ECD) shedding through ADAM17 followed by γ-secretase-mediated nuclear translocation of the C-terminal domain. The enhanced shedding of the CAREx8 ECD further protected the epithelium from AdV infection. Taken together, these novel molecules protect the epithelium from AdV infection. This approach may be applicable to the development of novel antiviral molecules against other viruses that use a receptor with a PDZ binding domain.
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Affiliation(s)
- Mahmoud S. Alghamri
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
- Department of Neurosurgery, University of Michigan Medical School, Ann Arbor, Michigan, USA
| | - Priyanka Sharma
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
| | | | - James M. Readler
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
| | - Ran Yan
- Department of Biological Sciences, Wright State University, Dayton, Ohio, USA
| | - S. Dean Rider
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, Ohio, USA
| | - Heather A. Hostetler
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, Ohio, USA
| | - David R. Cool
- Department of Pharmacology and Toxicology, Wright State University, Dayton, Ohio, USA
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Harnish JM, Link N, Yamamoto S. Drosophila as a Model for Infectious Diseases. Int J Mol Sci 2021; 22:2724. [PMID: 33800390 PMCID: PMC7962867 DOI: 10.3390/ijms22052724] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 02/11/2021] [Accepted: 02/14/2021] [Indexed: 12/19/2022] Open
Abstract
The fruit fly, Drosophila melanogaster, has been used to understand fundamental principles of genetics and biology for over a century. Drosophila is now also considered an essential tool to study mechanisms underlying numerous human genetic diseases. In this review, we will discuss how flies can be used to deepen our knowledge of infectious disease mechanisms in vivo. Flies make effective and applicable models for studying host-pathogen interactions thanks to their highly conserved innate immune systems and cellular processes commonly hijacked by pathogens. Drosophila researchers also possess the most powerful, rapid, and versatile tools for genetic manipulation in multicellular organisms. This allows for robust experiments in which specific pathogenic proteins can be expressed either one at a time or in conjunction with each other to dissect the molecular functions of each virulent factor in a cell-type-specific manner. Well documented phenotypes allow large genetic and pharmacological screens to be performed with relative ease using huge collections of mutant and transgenic strains that are publicly available. These factors combine to make Drosophila a powerful tool for dissecting out host-pathogen interactions as well as a tool to better understand how we can treat infectious diseases that pose risks to public health, including COVID-19, caused by SARS-CoV-2.
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Affiliation(s)
- J. Michael Harnish
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX 77030, USA; (J.M.H.); (N.L.)
- Jan and Dan Duncan Neurological Research Institute, Texas Children’s Hospital, Houston, TX 77030, USA
| | - Nichole Link
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX 77030, USA; (J.M.H.); (N.L.)
- Jan and Dan Duncan Neurological Research Institute, Texas Children’s Hospital, Houston, TX 77030, USA
- Howard Hughes Medical Institute, Houston, TX 77030, USA
| | - Shinya Yamamoto
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX 77030, USA; (J.M.H.); (N.L.)
- Jan and Dan Duncan Neurological Research Institute, Texas Children’s Hospital, Houston, TX 77030, USA
- Department of Neuroscience, BCM, Houston, TX 77030, USA
- Development, Disease Models and Therapeutics Graduate Program, BCM, Houston, TX 77030, USA
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19
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Inhibition of kinase IKKβ suppresses cellular abnormalities induced by the human papillomavirus oncoprotein HPV 18E6. Sci Rep 2021; 11:1111. [PMID: 33441820 PMCID: PMC7807017 DOI: 10.1038/s41598-020-80193-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 12/15/2020] [Indexed: 11/14/2022] Open
Abstract
Human papillomavirus (HPV) is the leading cause of cervical cancer and has been implicated in several other cancer types including vaginal, vulvar, penile, and oropharyngeal cancers. Despite the recent availability of a vaccine, there are still over 310,000 deaths each year worldwide. Current treatments for HPV-mediated cancers show limited efficacy, and would benefit from improved understanding of disease mechanisms. Recently, we developed a Drosophila ‘HPV 18 E6’ model that displayed loss of cellular morphology and polarity, junctional disorganization, and degradation of the major E6 target Magi; we further provided evidence that mechanisms underlying HPV E6-induced cellular abnormalities are conserved between humans and flies. Here, we report a functional genetic screen of the Drosophila kinome that identified IKK\documentclass[12pt]{minimal}
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\begin{document}$$\beta$$\end{document}β reduces Magi degradation and that this effect correlates with hyperphosphorylation of E6. Further, the reduction in IKK\documentclass[12pt]{minimal}
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\begin{document}$$\beta$$\end{document}β suppressed the cellular transformation caused by the cooperative action of HPVE6 and the oncogenic Ras. Finally, we demonstrate that the interaction between IKK\documentclass[12pt]{minimal}
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\begin{document}$$\beta$$\end{document}β blocked the growth of cervical cancer cells, suggesting that IKK\documentclass[12pt]{minimal}
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\begin{document}$$\beta$$\end{document}β may serve as a novel therapeutic target for HPV-mediated cancers.
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20
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Viral PDZ Binding Motifs Influence Cell Behavior Through the Interaction with Cellular Proteins Containing PDZ Domains. Methods Mol Biol 2021; 2256:217-236. [PMID: 34014525 DOI: 10.1007/978-1-0716-1166-1_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Viruses have evolved to interact with their hosts. Some viruses such as human papilloma virus, dengue virus, SARS-CoV, or influenza virus encode proteins including a PBM that interact with cellular proteins containing PDZ domains. There are more than 400 cellular protein isoforms with these domains in the human genome, indicating that viral PBMs have a high potential to influence the behavior of the cell. In this review we analyze the most relevant cellular processes known to be affected by viral PBM-cellular PDZ interactions including the establishment of cell-cell interactions and cell polarity, the regulation of cell survival and apoptosis and the activation of the immune system. Special attention has been provided to coronavirus PBM conservation throughout evolution and to the role of the PBMs of human coronaviruses SARS-CoV and MERS-CoV in pathogenesis.
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Dayer G, Masoom ML, Togtema M, Zehbe I. Virus-Host Protein-Protein Interactions between Human Papillomavirus 16 E6 A1 and D2/D3 Sub-Lineages: Variances and Similarities. Int J Mol Sci 2020; 21:E7980. [PMID: 33121134 PMCID: PMC7663357 DOI: 10.3390/ijms21217980] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 10/23/2020] [Indexed: 01/07/2023] Open
Abstract
High-risk strains of human papillomavirus are causative agents for cervical and other mucosal cancers, with type 16 being the most frequent. Compared to the European Prototype (EP; A1), the Asian-American (AA; D2/D3) sub-lineage seems to have increased abilities to promote carcinogenesis. Here, we studied protein-protein interactions (PPIs) between host proteins and sub-lineages of the key transforming E6 protein. We transduced human keratinocyte with EP or AA E6 genes and co-immunoprecipitated E6 proteins along with interacting cellular proteins to detect virus-host binding partners. AAE6 and EPE6 may have unique PPIs with host cellular proteins, conferring gain or loss of function and resulting in varied abilities to promote carcinogenesis. Using liquid chromatography-mass spectrometry and stringent interactor selection criteria based on the number of peptides, we identified 25 candidates: 6 unique to AAE6 and EPE6, along with 13 E6 targets common to both. A novel approach based on pathway selection discovered 171 target proteins: 90 unique AAE6 and 61 unique EPE6 along with 20 common E6 targets. Interpretations were made using databases, such as UniProt, BioGRID, and Reactome. Detected E6 targets were differentially implicated in important hallmarks of cancer: deregulating Notch signaling, energetics and hypoxia, DNA replication and repair, and immune response.
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Affiliation(s)
- Guillem Dayer
- Biology Department, Lakehead University, Thunder Bay, ON P7B 5E1, Canada;
- Thunder Bay Regional Health Research Institute, Probe Development and Biomarker Exploration, Thunder Bay, ON P7B 6V4, Canada; (M.L.M.); (M.T.)
| | - Mehran L. Masoom
- Thunder Bay Regional Health Research Institute, Probe Development and Biomarker Exploration, Thunder Bay, ON P7B 6V4, Canada; (M.L.M.); (M.T.)
| | - Melissa Togtema
- Thunder Bay Regional Health Research Institute, Probe Development and Biomarker Exploration, Thunder Bay, ON P7B 6V4, Canada; (M.L.M.); (M.T.)
| | - Ingeborg Zehbe
- Biology Department, Lakehead University, Thunder Bay, ON P7B 5E1, Canada;
- Thunder Bay Regional Health Research Institute, Probe Development and Biomarker Exploration, Thunder Bay, ON P7B 6V4, Canada; (M.L.M.); (M.T.)
- Northern Ontario School of Medicine, Lakehead University, Thunder Bay, ON P7B 5E1, Canada
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22
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Olmedo-Nieva L, Muñoz-Bello JO, Manzo-Merino J, Lizano M. New insights in Hippo signalling alteration in human papillomavirus-related cancers. Cell Signal 2020; 76:109815. [PMID: 33148514 DOI: 10.1016/j.cellsig.2020.109815] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/20/2020] [Accepted: 10/20/2020] [Indexed: 02/09/2023]
Abstract
The persistent infection with high-risk human papillomavirus (HPV) is an etiologic factor for the development of different types of cancers, mainly attributed to the continuous expression of E6 and E7 HPV oncoproteins, which regulate several cell signalling pathways including the Hippo pathway. It has been demonstrated that E6 proteins promote the increase of the Hippo elements YAP, TAZ and TEAD, at protein level, as well as their transcriptional targets. Also, E6 and E7 oncoproteins promote nuclear YAP localization and a decrease in YAP negative regulators such as MST1, PTPN14 or SOCS6. Interestingly, Hippo signalling components modulate HPV activity, such as TEAD1 and the transcriptional co-factor VGLL1, induce the activation of HPV early and late promoters, while hyperactivation of YAP in specific cells facilitates virus infection by increasing putative HPV receptors and by evading innate immunity. Additionally, alterations in Hippo signalling elements have been found in HPV-related cancers and particularly, the involvement of HPV oncoproteins on the regulation of some of these Hippo components has been also proposed, although the precise mechanisms remain unclear. The present review addresses the recent findings describing the interplay between HPV and Hippo signalling in HPV-related cancers, a fact that highlights the importance of developing more in-depth studies in this field to establish key therapeutic targets.
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Affiliation(s)
- Leslie Olmedo-Nieva
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City 14080, Mexico; Programa de Doctorado en Ciencias Bioquímicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico
| | - J Omar Muñoz-Bello
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City 14080, Mexico; Departamento de Farmacobiología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional, Sede sur, Mexico City 14330, Mexico
| | - Joaquín Manzo-Merino
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City 14080, Mexico; Cátedras CONACyT-Instituto Nacional de Cancerología, Mexico City, Mexico
| | - Marcela Lizano
- Unidad de Investigación Biomédica en Cáncer, Instituto Nacional de Cancerología-Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City 14080, Mexico; Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City 04510, Mexico.
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Arredondo-Robles AV, Rodríguez-López KP, Ávila-Avilés RD. RETRACTED ARTICLE: Long non-coding RNAs in cervical cancer. J Appl Genet 2020; 61:405. [PMID: 31981186 DOI: 10.1007/s13353-020-00545-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/03/2020] [Accepted: 01/20/2020] [Indexed: 10/25/2022]
Affiliation(s)
- A V Arredondo-Robles
- Facultad de Ciencias, Universidad Autónoma del Estado de México, Campus El Cerrillo, Piedras Blancas, Carretera Toluca Kilómetro 15.5, C.P. 50200, Ixtlahuaca, Edo. de México, Mexico
| | - K P Rodríguez-López
- Facultad de Ciencias, Universidad Autónoma del Estado de México, Campus El Cerrillo, Piedras Blancas, Carretera Toluca Kilómetro 15.5, C.P. 50200, Ixtlahuaca, Edo. de México, Mexico
| | - R D Ávila-Avilés
- Facultad de Ciencias, Universidad Autónoma del Estado de México, Campus El Cerrillo, Piedras Blancas, Carretera Toluca Kilómetro 15.5, C.P. 50200, Ixtlahuaca, Edo. de México, Mexico. .,Departamento de Genética y Biología Molecular, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Av Instituto Politécnico Nacional, 2508, La Laguna Ticoman, C.P. 07360, Ciudad de México, Mexico.
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Li ZY, Li XH, Tian GW, Zhang DY, Gao H, Wang ZY. MAGI1 Inhibits the Proliferation, Migration and Invasion of Glioma Cells. Onco Targets Ther 2019; 12:11281-11290. [PMID: 31908493 PMCID: PMC6927608 DOI: 10.2147/ott.s230236] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 12/05/2019] [Indexed: 11/29/2022] Open
Abstract
Background Membrane-associated guanylate kinase inverted repeat member 1 (MAGI1) acts as a tumor suppressor in a variety of tumors; however, its expression and biological function in glioma are still unknown. Methods MAGI1 expression in glioma was examined by immunohistochemistry. In addition, overexpression of MAGI1 in U87 and U373 cells, colony formation and MTT assays were used to evaluate cell proliferation, Transwell assays to determine cell migration and invasion, and a xenograft model established using U87 cells to evaluate the effect of MAGI1 overexpression in vivo. Western blot assays were used to analyze the Akt, MMP2, MMP9 and E-cadherin/N-cadherin/vimentin pathway changes after overexpression of MAGI1. Results We demonstrated that MAGI1 was expressed at low levels in glioma. Low MAGI1 expression was positively correlated with the malignant progression of glioma and indicated a poor prognosis. Moreover, we found that overexpressed MAGI1 inhibited the proliferation, migration and invasion of glioma cells by regulating cell growth and EMT through Akt, MMP2, MMP9 and the E-cadherin/N-cadherin/vimentin pathway. Conclusion These findings demonstrate a novel function of MAGI1 in glioma progression and suggest that MAGI1 might be a target for the diagnosis and treatment of glioma.
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Affiliation(s)
- Zhong-Yan Li
- Department of Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, People's Republic of China.,Department of Neurosurgery, Fuxin Central Hospital, Fuxin, People's Republic of China
| | - Xue-Hua Li
- Department of Neurosurgery, Fuxin Central Hospital, Fuxin, People's Republic of China
| | - Guang-Wei Tian
- Department of Radiation Oncology, The First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Dong-Yong Zhang
- Department of Neurosurgery, First Affiliated Hospital of China Medical University, Shenyang, People's Republic of China
| | - Hai Gao
- Department of Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, People's Republic of China
| | - Zhen-Yu Wang
- Department of Anatomy, College of Basic Medical Sciences, China Medical University, Shenyang, People's Republic of China
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Gheit T. Mucosal and Cutaneous Human Papillomavirus Infections and Cancer Biology. Front Oncol 2019; 9:355. [PMID: 31134154 PMCID: PMC6517478 DOI: 10.3389/fonc.2019.00355] [Citation(s) in RCA: 159] [Impact Index Per Article: 31.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 04/17/2019] [Indexed: 12/13/2022] Open
Abstract
Papillomaviridae is a family of small non-enveloped icosahedral viruses with double-stranded circular DNA. More than 200 different human papillomaviruses (HPVs) have been listed so far. Based on epidemiological data, a subgroup of alphapapillomaviruses (alpha HPVs) was referred to as high-risk (HR) HPV types. HR HPVs are the etiological agents of anogenital cancer and a subset of head and neck cancers. The cutaneous HPV types, mainly from beta and gamma genera, are widely present on the surface of the skin in the general population. However, there is growing evidence of an etiological role of betapapillomaviruses (beta HPVs) in non-melanoma skin cancer (NMSC), together with ultraviolet (UV) radiation. Studies performed on mucosal HR HPV types, such as 16 and 18, showed that both oncoproteins E6 and E7 play a key role in cervical cancer by altering pathways involved in the host immune response to establish a persistent infection and by promoting cellular transformation. Continuous expression of E6 and E7 of mucosal HR HPV types is essential to initiate and to maintain the cellular transformation process, whereas expression of E6 and E7 of cutaneous HPV types is not required for the maintenance of the skin cancer phenotype. Beta HPV types appear to play a role in the initiation of skin carcinogenesis, by exacerbating the accumulation of UV radiation-induced DNA breaks and somatic mutations (the hit-and-run mechanism), and they would therefore act as facilitators rather than direct actors in NMSC. In this review, the natural history of HPV infection and the transforming properties of various HPV genera will be described, with a particular focus on describing the state of knowledge about the role of cutaneous HPV types in NMSC.
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Affiliation(s)
- Tarik Gheit
- Infections and Cancer Biology Group, International Agency for Research on Cancer (IARC), Lyon, France
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The Protein Tyrosine Phosphatase H1 PTPH1 Supports Proliferation of Keratinocytes and is a Target of the Human Papillomavirus Type 8 E6 Oncogene. Cells 2019; 8:cells8030244. [PMID: 30875834 PMCID: PMC6468676 DOI: 10.3390/cells8030244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 03/07/2019] [Accepted: 03/09/2019] [Indexed: 12/15/2022] Open
Abstract
Human papillomaviruses (HPV) replicate their DNA in the suprabasal layer of the infected mucosa or skin. In order to create a suitable environment for vegetative viral DNA replication HPV delay differentiation and sustain keratinocyte proliferation that can lead to hyperplasia. The mechanism underlying cell growth stimulation is not well characterized. Here, we show that the E6 oncoprotein of the βHPV type 8 (HPV8), which infects the cutaneous skin and is associated with skin cancer in Epidermodysplasia verruciformis patients and immunosuppressed organ transplant recipients, binds to the protein tyrosine phosphatase H1 (PTPH1), which resulted in increased protein expression and phosphatase activity of PTPH1. Suppression of PTPH1 in immortalized keratinocytes reduced cell proliferation as well as the level of epidermal growth factor receptor (EGFR). Furthermore, we report that HPV8E6 expressing keratinocytes have increased level of active, GTP-bound Ras. This effect was independent of PTPH1. Therefore, HPV8E6-mediated targeting of PTPH1 might result in higher level of EGFR and enhanced keratinocyte proliferation. The HPV8E6-mediated stimulation of Ras may be an additional step to induce cell growth. Our results provide novel insights into the mechanism how βHPVE6 proteins support proliferation of infected keratinocytes, thus creating an environment with increased risk of development of skin cancer particularly upon UV-induced DNA mutations.
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Liu X, Fuentes EJ. Emerging Themes in PDZ Domain Signaling: Structure, Function, and Inhibition. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2019; 343:129-218. [PMID: 30712672 PMCID: PMC7185565 DOI: 10.1016/bs.ircmb.2018.05.013] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Post-synaptic density-95, disks-large and zonula occludens-1 (PDZ) domains are small globular protein-protein interaction domains widely conserved from yeast to humans. They are composed of ∼90 amino acids and form a classical two α-helical/six β-strand structure. The prototypical ligand is the C-terminus of partner proteins; however, they also bind internal peptide sequences. Recent findings indicate that PDZ domains also bind phosphatidylinositides and cholesterol. Through their ligand interactions, PDZ domain proteins are critical for cellular trafficking and the surface retention of various ion channels. In addition, PDZ proteins are essential for neuronal signaling, memory, and learning. PDZ proteins also contribute to cytoskeletal dynamics by mediating interactions critical for maintaining cell-cell junctions, cell polarity, and cell migration. Given their important biological roles, it is not surprising that their dysfunction can lead to multiple disease states. As such, PDZ domain-containing proteins have emerged as potential targets for the development of small molecular inhibitors as therapeutic agents. Recent data suggest that the critical binding function of PDZ domains in cell signaling is more than just glue, and their binding function can be regulated by phosphorylation or allosterically by other binding partners. These studies also provide a wealth of structural and biophysical data that are beginning to reveal the physical features that endow this small modular domain with a central role in cell signaling.
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Affiliation(s)
- Xu Liu
- Department of Biochemistry, University of Iowa, Iowa City, IA, United States
| | - Ernesto J. Fuentes
- Department of Biochemistry, University of Iowa, Iowa City, IA, United States
- Holden Comprehensive Cancer Center, University of Iowa, Iowa City, IA, United States
- Corresponding author: E-mail:
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Wang Q, Song R, Zhao C, Liu H, Yang Y, Gu S, Feng D, He J. HPV16 E6 promotes cervical cancer cell migration and invasion by downregulation of NHERF1. Int J Cancer 2018; 144:1619-1632. [PMID: 30230542 DOI: 10.1002/ijc.31876] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 07/29/2018] [Accepted: 09/03/2018] [Indexed: 12/21/2022]
Abstract
HPV16 is the predominant type of HPV causing invasive cervical cancer. However, the underlying molecular mechanism of the unparalleled carcinogenic power of HPV16 compared to other types of high-risk (HR)-HPV including HPV18 remains elusive. The PDZ binding motif (PBM) of high-risk HPV E6 plays an important role in neoplasia and progression of cervical cancer. HPV16 E6 rather than HPV18 E6, interacted with NHERF1 by its PBM region, and induced degradation of NHERF1. NHERF1 retarded the assembly of cytoskeleton by downregulation of ACTN4, thereby inhibited the migration and invasion of cervical cancer cells in both cell and mouse model. HPV16 E6 was confirmed to enhance actin polymerization with increased ACTN4 level by downregulation of NHERF1, and result in enhanced migration and invasion of cervical cancer cells. GSEA analysis of cervical cancer specimens also showed that HPV16 E6 rather than HPV18 E6, was significantly associated with actin cytoskeleton assembly. That downregulation of NHERF1 by HPV16 E6 promoted cytoskeleton assembly and cell invasion, was an important cause in cervical cancer carcinogenesis. These findings provided the differential mechanism between HPV16 E6 and HPV18 E6 in the development and progression of cervical cancer, which may partially explain the differences of carcinogenic power between these two types of HR-HPVs.
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Affiliation(s)
- Qiqi Wang
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing, People's Republic of China
| | - Ran Song
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing, People's Republic of China
| | - Chunjuan Zhao
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing, People's Republic of China
| | - Hua Liu
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing, People's Republic of China
| | - Ying Yang
- Core Facilities Center, Capital Medical University, Beijing, People's Republic of China
| | - Siyu Gu
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing, People's Republic of China
| | - Duiping Feng
- Department of Interventional Radiology, First Hospital of Shanxi Medical University, Taiyuan, People's Republic of China
| | - Junqi He
- Department of Biochemistry and Molecular Biology, Beijing Key Laboratory for Tumor Invasion and Metastasis, Capital Medical University, Beijing, People's Republic of China
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Thomas M, Banks L. Upsetting the Balance: When Viruses Manipulate Cell Polarity Control. J Mol Biol 2018; 430:3481-3503. [PMID: 29680664 PMCID: PMC7094317 DOI: 10.1016/j.jmb.2018.04.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 04/12/2018] [Accepted: 04/14/2018] [Indexed: 12/20/2022]
Abstract
The central importance of cell polarity control is emphasized by the frequency with which it is targeted by many diverse viruses. It is clear that in targeting key polarity control proteins, viruses affect not only host cell polarity, but also influence many cellular processes, including transcription, replication, and innate and acquired immunity. Examination of the interactions of different virus proteins with the cell and its polarity controls during the virus life cycles, and in virally-induced cell transformation shows ever more clearly how intimately all cellular processes are linked to the control of cell polarity.
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High-Risk Human Papillomaviral Oncogenes E6 and E7 Target Key Cellular Pathways to Achieve Oncogenesis. Int J Mol Sci 2018; 19:ijms19061706. [PMID: 29890655 PMCID: PMC6032416 DOI: 10.3390/ijms19061706] [Citation(s) in RCA: 117] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 06/04/2018] [Accepted: 06/04/2018] [Indexed: 12/13/2022] Open
Abstract
Infection with high-risk human papillomavirus (HPV) has been linked to several human cancers, the most prominent of which is cervical cancer. The integration of the viral genome into the host genome is one of the manners in which the viral oncogenes E6 and E7 achieve persistent expression. The most well-studied cellular targets of the viral oncogenes E6 and E7 are p53 and pRb, respectively. However, recent research has demonstrated the ability of these two viral factors to target many more cellular factors, including proteins which regulate epigenetic marks and splicing changes in the cell. These have the ability to exert a global change, which eventually culminates to uncontrolled proliferation and carcinogenesis.
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Shankar A, Crouch DH, Macluskey M. Ezrin-Radixin-Moesin Binding Phosphoprotein 50: A Potential Novel Biomarker in Human Papilloma Virus-Associated Head and Neck Squamous Cell Carcinomas. Head Neck Pathol 2018; 13:188-197. [PMID: 29846905 PMCID: PMC6513826 DOI: 10.1007/s12105-018-0937-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 05/23/2018] [Indexed: 12/18/2022]
Abstract
High-risk human papilloma virus (HR-HPV) has increasingly been associated with head and neck squamous cell carcinoma (HNSCC), in particular oropharyngeal cancers. Ezrin-Radixin-Moesin Binding Phosphoprotein 50 (EBP50), a putative tumour suppressor, localises to the plasma membrane in suprabasal epithelium and to the cytoplasm in proliferative basal layers, and is a target for degradation by the HR-HPV E6 oncoprotein. The aim of this study was to investigate EBP50 protein expression patterns in HNSCC in a large Scottish cohort to determine if there was a correlation with HPV status and clinical outcomes. EBP50 expression patterns were assessed in 156 HNSCC including oropharyngeal (37.8%), laryngeal (24%), oral (19%) and other sites (18.5%), which were genotyped for presence of HR-HPV. HNSCC were generally negative for membranous EBP50. EBP50 expression was either cytoplasmic/absent, being 'predominantly cytoplasmic' in 76 (49%), 'weak/negligible cytoplasmic' in 44 (28%), 'strongly cytoplasmic' in 5 (3%), 'heterogeneous' in 26 (17%) and 'other' in 5 (3%) samples. Forty tumours (25%) were positive for HPV DNA, predominantly HR-HPV 16, and 44 (28%) were p16 positive. The majority of tumours (71%) with 'weak/negligible cytoplasmic' EBP50 expression originated in the oropharynx were more likely to have positive neck nodes, overexpression of p16 and positive tumour HR-HPV status (P < 0.001). Differences in EBP50 levels between oropharyngeal and non-oropharyngeal tumours may be linked to degradation of EBP50 by HR-HPV, and loss of EBP50 may therefore be a surrogate biomarker for HR-HPV infection in oropharyngeal tumours.
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Affiliation(s)
- Athiva Shankar
- 0000 0004 0397 2876grid.8241.fUnit of Oral Surgery and Medicine, University of Dundee Dental School, Park Place, Dundee, DD1 4HN UK
| | - Dorothy H. Crouch
- 0000 0004 0397 2876grid.8241.fUnit of Oral Surgery and Medicine, University of Dundee Dental School, Park Place, Dundee, DD1 4HN UK
| | - Michaelina Macluskey
- 0000 0004 0397 2876grid.8241.fUnit of Oral Surgery and Medicine, University of Dundee Dental School, Park Place, Dundee, DD1 4HN UK
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Webb Strickland S, Brimer N, Lyons C, Vande Pol SB. Human Papillomavirus E6 interaction with cellular PDZ domain proteins modulates YAP nuclear localization. Virology 2018; 516:127-138. [PMID: 29346075 DOI: 10.1016/j.virol.2018.01.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 12/19/2017] [Accepted: 01/02/2018] [Indexed: 01/28/2023]
Abstract
HPV E6 oncoproteins associate with cellular PDZ proteins. In addition to previously identified cellular PDZ proteins, we found association of the HPV16 E6 PBM with the Dystrophin Glycoprotein Complex, LRCC1, and SLC9A3R2. HPV18 E6 had additional associations when lysates from adenomatous cell lines were used including LRPPRC, RLGAPB, EIF3A, SMC2 and 3, AMOT, AMOTL1, and ARHGEF1; some of these cellular PDZ proteins are implicated in the regulation of the YAP1 transcriptional co-activator. In keratinocytes, nuclear translocation of YAP1 was promoted by the complete HPV-16 genome, or by expression of the individual E6 or E7 oncoproteins; the activity of E6 required an intact PBM at the carboxy-terminus. This work demonstrates that E6 association with cellular PDZ proteins promotes the nuclear localization of YAP1. The ability of E6 to promote the nuclear transport of YAP1 thus identifies an E6 activity that could contribute to the transformation of cells by E6.
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Affiliation(s)
- Sydney Webb Strickland
- Department of Pathology, University of Virginia, Charlottesville, VA 22901, United States
| | - Nicole Brimer
- Department of Pathology, University of Virginia, Charlottesville, VA 22901, United States
| | - Charles Lyons
- Department of Pathology, University of Virginia, Charlottesville, VA 22901, United States
| | - Scott B Vande Pol
- Department of Pathology, University of Virginia, Charlottesville, VA 22901, United States.
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Dias Bastos PA, Vlahou A, Leite-Moreira A, Santos LL, Ferreira R, Vitorino R. Deciphering the disease-related molecular networks using urine proteomics. Trends Analyt Chem 2017. [DOI: 10.1016/j.trac.2017.07.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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34
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Cote Y, Nominé Y, Ramirez J, Hellwig P, Stote RH. Peptide-Protein Binding Investigated by Far-IR Spectroscopy and Molecular Dynamics Simulations. Biophys J 2017. [PMID: 28636914 DOI: 10.1016/j.bpj.2017.05.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Molecular dynamics (MD) simulations and far-infrared (far-IR) spectroscopy were combined to study peptide binding by the second PDZ domain (PDZ1) of MAGI1, which has been identified as an important target for the Human Papilloma Virus. PDZ1 recognizes and binds to the C-terminal end of the E6 protein from high-risk Human Papilloma Virus. The far-IR spectra of two forms of the protein, an unbound APO form and a HOLO form (where the PDZ1 is bound to an 11-residue peptide derived from the C terminus of HPV16 E6), were obtained. MD simulations were used to determine the most representative structure of each form and these were used to compute their respective IR spectra by normal mode analysis. Far-UV circular dichroism spectroscopy was used to confirm the secondary structure content and the stability through temperature-dependent studies. Both the experimental and calculated far-IR spectra showed a red shift of the low-frequency peaks upon peptide binding. The calculations show that this is coincident with an increased number of hydrogen bonds formed as the peptide augments the protein β-sheet. We further identified the contribution of surface-bound water molecules to bands in the far-IR and, through the calculations, identified potential pathways for allosteric communication. Together, these results demonstrate the utility of combining far-IR experiments and MD studies to study peptide binding by proteins.
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Affiliation(s)
- Yoann Cote
- Department of Integrative Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964 UMR 7104 CNRS, Université de Strasbourg, Illkirch, France
| | - Yves Nominé
- Équipe Labellisée Ligue Contre le Cancer, Department of Integrative Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964 UMR 7104 CNRS, Université de Strasbourg, Illkirch, France
| | - Juan Ramirez
- Equipe Oncoprotéines, Ecole Supérieure de Biotechnologie de Strasbourg, Biotechnologie et Signalisation Cellulaire, UMR 7242, CNRS, Université de Strasbourg, Illkirch, France
| | - Petra Hellwig
- Laboratoire de Bioélectrochimie et Spectroscopie, UMR 7140, Chimie de la Matière Complexe, Université de Strasbourg, CNRS, Strasbourg, France
| | - Roland H Stote
- Department of Integrative Structural Biology, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), INSERM U964 UMR 7104 CNRS, Université de Strasbourg, Illkirch, France.
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Kudo I, Esumi M, Kusumi Y, Furusaka T, Oshima T. Particular gene upregulation and p53 heterogeneous expression in TP53-mutated maxillary carcinoma. Oncol Lett 2017; 14:4633-4640. [PMID: 29085461 PMCID: PMC5649615 DOI: 10.3892/ol.2017.6751] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 08/03/2017] [Indexed: 12/14/2022] Open
Abstract
It has been demonstrated that tumor protein p53 (TP53) mutation in maxillary squamous cell carcinoma, is more treatment-resistant compared with the carcinoma without TP53 mutation. However, the association between TP53 mutation and treatment resistance remains unclear. As a first step in understanding the biological differences between tumors with and without TP53 mutation, a comprehensive gene expression analysis of maxillary squamous cell carcinoma with or without TP53 mutation was performed. A total of 42 genes were identified to be differentially expressed by >4-fold. Quantification of their mRNA using quantitative polymerase chain reaction indicated 18 genes with high expression and three genes with low expression in TP53 mutated tumors vs. TP53 wild-type tumors. The 18 genes included eight cell adhesion (DSC3, GRHL1, EPPK1, PROM2, ANXA8, DSP, JUP, and KRT6B) and four cell growth inhibition (SFN, CLCA2, SAMD9 and TP63) genes. Among these genes, DSC3, SFN, and CSTA, whose expression was markedly increased, also demonstrated high protein expression in immunohistochemical staining of TP53 mutated tumors. The TP53 mutated tumors demonstrated high nuclear staining of the TP53 protein only in tumor cells at the tumor margins adjacent to the stroma, whereas the tumor interior was negative for TP53. However, all tumor cells of TP53 wild-type tumors exhibited positive nuclear staining for the TP53 protein. The combined findings suggest that TP53 mutated tumors possess a phenotype opposite to that associated with cancer progression and malignant transformation, and exhibit tumor cell heterogeneity between the tumor interior and margins.
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Affiliation(s)
- Itsuhiro Kudo
- Department of Pathology, Nihon University School of Medicine, Tokyo 173-8610, Japan.,Department of Otorhinolaryngology-Head and Neck Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Mariko Esumi
- Department of Pathology, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Yoshiaki Kusumi
- Department of Pathology, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Tohru Furusaka
- Department of Otorhinolaryngology-Head and Neck Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
| | - Takeshi Oshima
- Department of Otorhinolaryngology-Head and Neck Surgery, Nihon University School of Medicine, Tokyo 173-8610, Japan
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Yoshimatsu Y, Nakahara T, Tanaka K, Inagawa Y, Narisawa-Saito M, Yugawa T, Ohno SI, Fujita M, Nakagama H, Kiyono T. Roles of the PDZ-binding motif of HPV 16 E6 protein in oncogenic transformation of human cervical keratinocytes. Cancer Sci 2017; 108:1303-1309. [PMID: 28440909 PMCID: PMC5497797 DOI: 10.1111/cas.13264] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Revised: 04/17/2017] [Accepted: 04/19/2017] [Indexed: 01/08/2023] Open
Abstract
The high-risk human papillomavirus E6 proteins have been shown to interact with and lead to degradation of PDZ-domain-containing proteins through its carboxy-terminal motif. This PDZ-binding motif plays important roles in transformation of cultured cells and carcinogenesis of E6-transgenic mice. However, its biological effects on the natural host cells have not been elucidated. We have examined its roles in an in vitro carcinogenesis model for cervical cancer, in which E6 and E7 together with activated HRAS (HRASG12V ) can induce tumorigenic transformation of normal human cervical keratinocytes. In this model, E6Δ151 mutant, which is defective in binding to PDZ domains, almost lost tumorigenic ability, whereas E6SAT mutant, which is defective in p53 degradation showed activity close to wild-type E6. Interestingly, we found decreased expression of PAR3 in E6-expressing cells independently of E6AP, which has not been previously recognized. Therefore, we knocked down several PDZ-domain containing proteins including PAR3 in human cervical keratinocytes expressing E7, HRASG12V and E6Δ151 to examine whether depletion of these proteins can restore the tumorigenic ability. Single knockdown of SCRIB, MAGI1 or PAR3 significantly but partially restored the tumorigenic ability. The combinatorial knockdown of SCRIB and MAGI1 cooperatively restored the tumorigenic ability, and additional depletion of PAR3 further enhanced the tumorigenic ability surpassing that induced by wild-type E6. These data highlight the importance of the carboxy-terminal motif of the E6 protein and downregulation of PAR3 in tumorigenic transformation of human cervical keratinocytes.
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Affiliation(s)
- Yuki Yoshimatsu
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan.,Department of Pathology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Tomomi Nakahara
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Katsuyuki Tanaka
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Yuki Inagawa
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Mako Narisawa-Saito
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Takashi Yugawa
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Shin-Ichi Ohno
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
| | - Masatoshi Fujita
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan.,Department of Cellular Biochemistry, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Hitoshi Nakagama
- Department of Pathology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,National Cancer Center, Tokyo, Japan
| | - Tohru Kiyono
- Division of Carcinogenesis and Cancer Prevention, National Cancer Center Research Institute, Tokyo, Japan
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Mullin JM, Diguilio KM, Valenzano MC, Deis R, Thomas S, Zurbach EP, Abdulhaqq S, Montaner LJ. Zinc reduces epithelial barrier compromise induced by human seminal plasma. PLoS One 2017; 12:e0170306. [PMID: 28278250 PMCID: PMC5344308 DOI: 10.1371/journal.pone.0170306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 01/03/2017] [Indexed: 01/11/2023] Open
Abstract
Human semen has the potential to modulate the epithelial mucosal tissues it contacts, as seminal plasma (SP) is recognized to contain both pro- and anti-barrier components, yet its effects on epithelial barrier function are largely unknown. We addressed the role of human SP when exposed to the basal-lateral epithelial surface, a situation that would occur clinically with prior mechanical or disease-related injury of the human epithelial mucosal cell layers in contact with semen. The action of SP on claudins-2, -4, -5, and -7 expression, as well as on a target epithelium whose basolateral surface has been made accessible to SP, showed upregulation of claudins-4 and -5 in CACO-2 human epithelial cell layers, despite broad variance in SP-induced modulation of transepithelial electrical resistance and mannitol permeability. Upregulation of claudin-2 by SP also exhibited such variance by SP sample. We characterize individual effects on CACO-2 barrier function of nine factors known to be present abundantly in seminal plasma (zinc, EGF, citrate, spermine, fructose, urea, TGF, histone, inflammatory cytokines) to establish that zinc, spermine and fructose had significant potential to raise CACO-2 transepithelial resistance, whereas inflammatory cytokines and EGF decreased this measure of barrier function. The role of zinc as a dominant factor in determining higher levels of transepithelial resistance and lower levels of paracellular leak were confirmed by zinc chelation and exogenous zinc addition. As expected, SP presentation to the basolateral cell surface also caused a very dramatic yet transient elevation of pErk levels. Results suggest that increased zinc content in SP can compete against the barrier-compromising effect of negative modulators in SP when SP gains access to that epithelium's basolateral surface. Prophylactic elevation of zinc in an epithelial cell layer prior to contact by SP may help to protect an epithelial barrier from invasion by SP-containing STD microbial pathogens such as HPV or HIV.
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Affiliation(s)
- James M. Mullin
- Lankenau Institute for Medical Research, Wynnewood, PA, United States of America
- * E-mail:
| | | | - Mary C. Valenzano
- Lankenau Institute for Medical Research, Wynnewood, PA, United States of America
| | - Rachael Deis
- Department of Biology, Drexel University, Philadelphia, PA, United States of America
| | - Sunil Thomas
- Lankenau Institute for Medical Research, Wynnewood, PA, United States of America
| | - E. Peter Zurbach
- Department of Chemistry, Saint Joseph’s University, Philadelphia, PA, United States of America
| | | | - Luis J. Montaner
- The Wistar Institute, Philadelphia, PA, United States of America
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38
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Yu S, Xia M, Alsiddig MA, Liu H, Wei W, Chen J. Molecular cloning, alternative splicing and mRNA expression analysis of MAGI1 and its correlation with laying performance in geese. Br Poult Sci 2017; 58:158-165. [DOI: 10.1080/00071668.2016.1268251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- S. Yu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
- College of Life Science, Leshan Normal University, Sichuan, PR China
| | - M. Xia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
| | - M. A. Alsiddig
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
| | - H. Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
| | - W. Wei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
| | - J. Chen
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, PR China
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Ganti K, Massimi P, Manzo-Merino J, Tomaić V, Pim D, Playford MP, Lizano M, Roberts S, Kranjec C, Doorbar J, Banks L. Interaction of the Human Papillomavirus E6 Oncoprotein with Sorting Nexin 27 Modulates Endocytic Cargo Transport Pathways. PLoS Pathog 2016; 12:e1005854. [PMID: 27649450 PMCID: PMC5029876 DOI: 10.1371/journal.ppat.1005854] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 08/09/2016] [Indexed: 01/05/2023] Open
Abstract
A subset of high-risk Human Papillomaviruses (HPVs) are the causative agents of a large number of human cancers, of which cervical is the most common. Two viral oncoproteins, E6 and E7, contribute directly towards the development and maintenance of malignancy. A characteristic feature of the E6 oncoproteins from cancer-causing HPV types is the presence of a PDZ binding motif (PBM) at its C-terminus, which confers interaction with cellular proteins harbouring PDZ domains. Here we show that this motif allows E6 interaction with Sorting Nexin 27 (SNX27), an essential component of endosomal recycling pathways. This interaction is highly conserved across E6 proteins from multiple high-risk HPV types and is mediated by a classical PBM-PDZ interaction but unlike many E6 targets, SNX27 is not targeted for degradation by E6. Rather, in HPV-18 positive cell lines the association of SNX27 with components of the retromer complex and the endocytic transport machinery is altered in an E6 PBM-dependent manner. Analysis of a SNX27 cargo, the glucose transporter GLUT1, reveals an E6-dependent maintenance of GLUT1 expression and alteration in its association with components of the endocytic transport machinery. Furthermore, knockdown of E6 in HPV-18 positive cervical cancer cells phenocopies the loss of SNX27, both in terms of GLUT1 expression levels and its vesicular localization, with a concomitant marked reduction in glucose uptake, whilst loss of SNX27 results in slower cell proliferation in low nutrient conditions. These results demonstrate that E6 interaction with SNX27 can alter the recycling of cargo molecules, one consequence of which is modulation of nutrient availability in HPV transformed tumour cells.
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Affiliation(s)
- Ketaki Ganti
- International Centre for Genetic Engineering and Biotechnology, Padriciano, Trieste, Italy
| | - Paola Massimi
- International Centre for Genetic Engineering and Biotechnology, Padriciano, Trieste, Italy
| | - Joaquin Manzo-Merino
- CONACyT Research Fellow, Instituto Nacional de Cancerologia, Mexico/Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico. Col. Seccion XVI, Tlalpan, Mexico
| | - Vjekoslav Tomaić
- International Centre for Genetic Engineering and Biotechnology, Padriciano, Trieste, Italy
- Division of Molecular Medicine, Ruđjer Bošković Institute, Zagreb, Croatia
| | - David Pim
- International Centre for Genetic Engineering and Biotechnology, Padriciano, Trieste, Italy
| | - Martin P. Playford
- National Heart, Blood and Lung Institute, NIH, Bethesda, Maryland, United States of America
| | - Marcela Lizano
- Instituto Nacional de Cancerologia, Mexico/Instituto de Investigaciones Biomedicas, Universidad Nacional Autonoma de Mexico. Col. Seccion XVI, Tlalpan, Mexico
| | - Sally Roberts
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, United Kingdom
| | - Christian Kranjec
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - John Doorbar
- Department of Pathology, University of Cambridge, Tennis Court Road, Cambridge, United Kingdom
| | - Lawrence Banks
- International Centre for Genetic Engineering and Biotechnology, Padriciano, Trieste, Italy
- * E-mail:
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40
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Padash Barmchi M, Gilbert M, Thomas M, Banks L, Zhang B, Auld VJ. A Drosophila Model of HPV E6-Induced Malignancy Reveals Essential Roles for Magi and the Insulin Receptor. PLoS Pathog 2016; 12:e1005789. [PMID: 27537218 PMCID: PMC4990329 DOI: 10.1371/journal.ppat.1005789] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 07/06/2016] [Indexed: 02/06/2023] Open
Abstract
Cervical cancer is one of the leading causes of cancer death in women worldwide. The causative agents of cervical cancers, high-risk human papillomaviruses (HPVs), cause cancer through the action of two oncoproteins, E6 and E7. The E6 oncoprotein cooperates with an E3 ubiquitin ligase (UBE3A) to target the p53 tumour suppressor and important polarity and junctional PDZ proteins for proteasomal degradation, activities that are believed to contribute towards malignancy. However, the causative link between degradation of PDZ proteins and E6-mediated malignancy is largely unknown. We have developed an in vivo model of HPV E6-mediated cellular transformation using the genetic model organism, Drosophila melanogaster. Co-expression of E6 and human UBE3A in wing and eye epithelia results in severe morphological abnormalities. Furthermore, E6, via its PDZ-binding motif and in cooperation with UBE3A, targets a suite of PDZ proteins that are conserved in human and Drosophila, including Magi, Dlg and Scribble. Similar to human epithelia, Drosophila Magi is a major degradation target. Magi overexpression rescues the cellular abnormalities caused by E6+UBE3A coexpression and this activity of Magi is PDZ domain-dependent. Drosophila p53 was not targeted by E6+UBE3A, and E6+UBE3A activity alone is not sufficient to induce tumorigenesis, which only occurs when E6+UBE3A are expressed in conjunction with activated/oncogenic forms of Ras or Notch. Finally, through a genetic screen we have identified the insulin receptor signaling pathway as being required for E6+UBE3A induced hyperplasia. Our results suggest a highly conserved mechanism of HPV E6 mediated cellular transformation, and establish a powerful genetic model to identify and understand the cellular mechanisms that underlie HPV E6-induced malignancy. Human papillomaviruses (HPV) are the causative agents of cervical cancer, one of the leading causes of cancer death in women worldwide. The E6 oncoprotein encoded by HPV has been implicated in the progression of primary tumors to metastatic disease and we have developed a new model in the fruit fly (Drosophila melanogaster) to study the cellular effects of E6. The E6 protein recruits an E3 ubiquitin ligase (UBE3A) to induce the degradation of a number of cellular proteins, including members of the MAGUK family of scaffolding proteins that control the structure and polarity of epithelial cells: Dlg, Scribble and Magi. Expression of E6 and human UBE3A in the wing and eye of Drosophila disrupted these tissues. Similar to human cells we found that Drosophila Magi was a major E6 degradation target and that overexpression of Magi rescued the tissue disruption. However, Drosophila p53 was not degraded by E6/UBE3A, making our fly model potentially useful for studying the p53-independent activities of the E6+UBE3A complex. When we paired E6 expression with oncogenic proteins, including activated Ras, we observed that epithelia were transformed into mesechymal-like cells that left the epithelium and spread through the body. As a test of the potential of our system, we carried out a pilot genetic screen and identified the insulin receptor as a strong modulator of the E6-mediated disruption of Drosophila tissues. Therefore, we have developed a new system and approach to help us better understand the mechanisms that underlie how HPV infection leads to cell transformation and cancer.
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Affiliation(s)
- Mojgan Padash Barmchi
- Department of Zoology, University of British Columbia, Vancouver, Canada
- Department of Biology, University of Oklahoma, Norman, Oklahoma, United States of America
- Division of Biological Sciences, University of Missouri, Columbia, Missouri, United States of America
- * E-mail: (MPB); (BZ); (VJA)
| | - Mary Gilbert
- Department of Zoology, University of British Columbia, Vancouver, Canada
| | - Miranda Thomas
- International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Lawrence Banks
- International Centre for Genetic Engineering and Biotechnology, Trieste, Italy
| | - Bing Zhang
- Department of Biology, University of Oklahoma, Norman, Oklahoma, United States of America
- Division of Biological Sciences, University of Missouri, Columbia, Missouri, United States of America
- * E-mail: (MPB); (BZ); (VJA)
| | - Vanessa J. Auld
- Department of Zoology, University of British Columbia, Vancouver, Canada
- * E-mail: (MPB); (BZ); (VJA)
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Illiano E, Demurtas OC, Massa S, Di Bonito P, Consalvi V, Chiaraluce R, Zanotto C, De Giuli Morghen C, Radaelli A, Venuti A, Franconi R. Production of functional, stable, unmutated recombinant human papillomavirus E6 oncoprotein: implications for HPV-tumor diagnosis and therapy. J Transl Med 2016; 14:224. [PMID: 27465494 PMCID: PMC4963926 DOI: 10.1186/s12967-016-0978-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2016] [Accepted: 07/13/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND High-risk human papillomaviruses (HR-HPVs) types 16 and 18 are the main etiological agents of cervical cancer, with more than 550,000 new cases each year worldwide. HPVs are also associated with other ano-genital and head-and-neck tumors. The HR-HPV E6 and E7 oncoproteins are responsible for onset and maintenance of the cell transformation state, and they represent appropriate targets for development of diagnostic and therapeutic tools. METHODS The unmutated E6 gene from HPV16 and HPV18 and from low-risk HPV11 was cloned in a prokaryotic expression vector for expression of the Histidine-tagged E6 protein (His6-E6), according to a novel procedure. The structural properties were determined using circular dichroism and fluorescence spectroscopy. His6-E6 oncoprotein immunogenicity was assessed in a mouse model, and its functionality was determined using in vitro GST pull-down and protein degradation assays. RESULTS The His6-tagged E6 proteins from HPV16, HPV18, and HPV11 E6 genes, without any further modification in the amino-acid sequence, were produced in bacteria as soluble and stable molecules. Structural analyses of HPV16 His6-E6 suggests that it maintains correct folding and conformational properties. C57BL/6 mice immunized with HPV16 His6-E6 developed significant humoral immune responses. The E6 proteins from HPV16, HPV18, and HPV11 were purified according to a new procedure, and investigated for protein-protein interactions. HR-HPV His6-E6 bound p53, the PDZ1 motif from MAGI-1 proteins, the human discs large tumor suppressor, and the human ubiquitin ligase E6-associated protein, thus suggesting that it is biologically active. The purified HR-HPV E6 proteins also targeted the MAGI-3 and p53 proteins for degradation. CONCLUSIONS This new procedure generates a stable, unmutated HPV16 E6 protein, which maintains the E6 properties in in vitro binding assays. This will be useful for basic studies, and for development of diagnostic kits and immunotherapies in preclinical mouse models of HPV-related tumorigenesis.
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Affiliation(s)
- Elena Illiano
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Via Balzaretti 9, 20133, Milan, Italy.,Laboratory of Biomedical Technologies (SSPT-TECS-TEB), Department for Sustainability, Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and the Environment (ENEA), 'Casaccia' Research Centre, Via Anguillarese 301, 00123, Rome, Italy
| | - Olivia Costantina Demurtas
- Laboratory of Biotechnology (SSPT-BIOAG-BIOTEC), Department for Sustainability, Division Biotechnology and Agroindustry, Italian National Agency for New Technologies, Energy and the Environment (ENEA), 'Casaccia' Research Centre, Via Anguillarese 301, 00123 Rome, Italy
| | - Silvia Massa
- Laboratory of Biotechnology (SSPT-BIOAG-BIOTEC), Department for Sustainability, Division Biotechnology and Agroindustry, Italian National Agency for New Technologies, Energy and the Environment (ENEA), 'Casaccia' Research Centre, Via Anguillarese 301, 00123 Rome, Italy
| | - Paola Di Bonito
- Department of Infectious Diseases, Istituto Superiore Sanità, Viale Regina Elena 299, 00185, Rome, Italy
| | - Valerio Consalvi
- 'A. Rossi Fanelli' Department of Biochemical Sciences, University of Rome 'La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy
| | - Roberta Chiaraluce
- 'A. Rossi Fanelli' Department of Biochemical Sciences, University of Rome 'La Sapienza', P.le Aldo Moro 5, 00185, Rome, Italy
| | - Carlo Zanotto
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Via Vanvitelli 32, 20129, Milan, Italy
| | - Carlo De Giuli Morghen
- Department of Medical Biotechnologies and Translational Medicine, University of Milan, Via Vanvitelli 32, 20129, Milan, Italy.,Catholic University 'Our Lady of Good Counsel', Tirana, Albania
| | - Antonia Radaelli
- Department of Pharmacological and Biomolecular Sciences, University of Milan, Via Balzaretti 9, 20133, Milan, Italy.,Cellular and Molecular Pharmacology Section, CNR Institute of Neurosciences, University of Milan, 20129, Milan, Italy
| | - Aldo Venuti
- HPV-UNIT, Ridait Department, Regina Elena National Cancer Institute, Via E. Chianesi 53, 00144, Rome, Italy.
| | - Rosella Franconi
- Laboratory of Biomedical Technologies (SSPT-TECS-TEB), Department for Sustainability, Division of Health Protection Technologies, Italian National Agency for New Technologies, Energy and the Environment (ENEA), 'Casaccia' Research Centre, Via Anguillarese 301, 00123, Rome, Italy.
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Preston MA, Pimentel B, Bermejo-Rodríguez C, Dionne I, Turnbull A, de la Cueva-Méndez G. Repurposing a Prokaryotic Toxin-Antitoxin System for the Selective Killing of Oncogenically Stressed Human Cells. ACS Synth Biol 2016; 5:540-6. [PMID: 26230535 DOI: 10.1021/acssynbio.5b00096] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Prokaryotes express intracellular toxins that pass unnoticed to carrying cells until coexpressed antitoxin partners are degraded in response to stress. Although not evolved to function in eukaryotes, one of these toxins, Kid, induces apoptosis in mammalian cells, an effect that is neutralized by its cognate antitoxin, Kis. Here we engineered this toxin-antitoxin pair to create a synthetic system that becomes active in human cells suffering a specific oncogenic stress. Inspired by the way Kid becomes active in bacterial cells, we produced a Kis variant that is selectively degraded in human cells expressing oncoprotein E6. The resulting toxin-antitoxin system functions autonomously in human cells, distinguishing those that suffer the oncogenic insult, which are killed by Kid, from those that do not, which remain protected by Kis. Our results provide a framework for developing personalized anticancer strategies avoiding off-target effects, a challenge that has been hardly tractable by other means thus far.
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Affiliation(s)
- Mark A. Preston
- MRC Cancer Cell Unit. Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, U.K
| | - Belén Pimentel
- MRC Cancer Cell Unit. Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, U.K
| | | | - Isabelle Dionne
- MRC Cancer Cell Unit. Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, U.K
| | - Alice Turnbull
- MRC Cancer Cell Unit. Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, U.K
| | - Guillermo de la Cueva-Méndez
- MRC Cancer Cell Unit. Hutchison/MRC Research Centre, Hills Road, Cambridge CB2 0XZ, U.K
- Andalusian Centre for Nanomedicine and Biotechnology (BIONAND), Parque Tecnológico de Andalucı́a, C/Severo Ochoa 35, 29590 Campanillas, Málaga, Spain
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Mirghani H, Ugolin N, Ory C, Goislard M, Lefèvre M, Baulande S, Hofman P, Guily JLS, Chevillard S, Lacave R. Comparative analysis of micro-RNAs in human papillomavirus-positive versus -negative oropharyngeal cancers. Head Neck 2016; 38:1634-1642. [PMID: 27097597 DOI: 10.1002/hed.24487] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Revised: 02/08/2016] [Accepted: 03/17/2016] [Indexed: 01/31/2023] Open
Abstract
BACKGROUND Oncogenic mechanisms of human papillomavirus (HPV)-positive oropharyngeal cancer are still poorly characterized. Analysis of their microRNA expression profile might provide valuable information. METHODS The microRNA expression profiles were analyzed by micro-arrays in 26 oropharyngeal cancers. A microRNA signature specific to HPV-status was identified by analyzing a learning/training set consisting of 16 oropharyngeal cancers. The robustness of this signature was further confirmed by blind case-by-case classification of a validation set composed of 10 independent tumors. Putative targeted molecular pathways were proposed using DIANA miRPath online software (http://microrna.gr/mirpath). RESULTS We have identified 25 miRNA signatures, which discriminates HPV16-positive oropharyngeal cancer from their HPV-negative counterparts. These 25 microRNAs play a potential role in Wnt and PI3K-pathways, cell-adhesion/cell-polarity, and the cytoskeleton regulation. CONCLUSION Our study contributes to a better understanding of pathogenic mechanisms involved in the development of HPV-positive oropharyngeal cancer and in the identification of potential therapeutic molecular targets. © 2016 Wiley Periodicals, Inc. Head Neck 38: 1708-1716, 2016.
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Affiliation(s)
- Haitham Mirghani
- ER2 Unit and GRC10, Université Pierre et Marie Curie, Paris, France. .,Department of Head and Neck Surgery, Institut de Cancérologie Gustave Roussy, Villejuif, France.
| | - Nicolas Ugolin
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, Fontenay-aux-Roses, Cedex, France
| | - Catherine Ory
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, Fontenay-aux-Roses, Cedex, France
| | - Maud Goislard
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, Fontenay-aux-Roses, Cedex, France
| | - Marine Lefèvre
- Department of Pathology, GHUEP, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, Paris, France
| | | | - Paul Hofman
- Laboratory of Clinical and Experimental Pathology and Biobank of CHUN, Pasteur Hospital, Nice, France
| | - Jean Lacau St Guily
- ER2 Unit and GRC10, Université Pierre et Marie Curie, Paris, France.,Department of Otolaryngology - Head and Neck Surgery, GHUEP, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, France
| | - Sylvie Chevillard
- CEA, DSV, iRCM, Laboratory of Experimental Cancerology, Fontenay-aux-Roses, Cedex, France
| | - Roger Lacave
- ER2 Unit and GRC10, Université Pierre et Marie Curie, Paris, France.,Tumours Genomic Unit, GHUEP, Hôpital Tenon, Assistance Publique-Hôpitaux de Paris, France
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Magi Is Associated with the Par Complex and Functions Antagonistically with Bazooka to Regulate the Apical Polarity Complex. PLoS One 2016; 11:e0153259. [PMID: 27074039 PMCID: PMC4830575 DOI: 10.1371/journal.pone.0153259] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 03/26/2016] [Indexed: 12/15/2022] Open
Abstract
The mammalian MAGI proteins play important roles in the maintenance of adherens and tight junctions. The MAGI family of proteins contains modular domains such as WW and PDZ domains necessary for scaffolding of membrane receptors and intracellular signaling components. Loss of MAGI leads to reduced junction stability while overexpression of MAGI can lead to increased adhesion and stabilization of epithelial morphology. However, how Magi regulates junction assembly in epithelia is largely unknown. We investigated the single Drosophila homologue of Magi to study the in vivo role of Magi in epithelial development. Magi is localized at the adherens junction and forms a complex with the polarity proteins, Par3/Bazooka and aPKC. We generated a Magi null mutant and found that Magi null mutants were viable with no detectable morphological defects even though the Magi protein is highly conserved with vertebrate Magi homologues. However, overexpression of Magi resulted in the displacement of Baz/Par3 and aPKC and lead to an increase in the level of PIP3. Interestingly, we found that Magi and Baz functioned in an antagonistic manner to regulate the localization of the apical polarity complex. Maintaining the balance between the level of Magi and Baz is an important determinant of the levels and localization of apical polarity complex.
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James CD, Roberts S. Viral Interactions with PDZ Domain-Containing Proteins-An Oncogenic Trait? Pathogens 2016; 5:pathogens5010008. [PMID: 26797638 PMCID: PMC4810129 DOI: 10.3390/pathogens5010008] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/14/2016] [Accepted: 01/15/2016] [Indexed: 02/06/2023] Open
Abstract
Many of the human viruses with oncogenic capabilities, either in their natural host or in experimental systems (hepatitis B and C, human T cell leukaemia virus type 1, Kaposi sarcoma herpesvirus, human immunodeficiency virus, high-risk human papillomaviruses and adenovirus type 9), encode in their limited genome the ability to target cellular proteins containing PSD95/ DLG/ZO-1 (PDZ) interaction modules. In many cases (but not always), the viruses have evolved to bind the PDZ domains using the same short linear peptide motifs found in host protein-PDZ interactions, and in some cases regulate the interactions in a similar fashion by phosphorylation. What is striking is that the diverse viruses target a common subset of PDZ proteins that are intimately involved in controlling cell polarity and the structure and function of intercellular junctions, including tight junctions. Cell polarity is fundamental to the control of cell proliferation and cell survival and disruption of polarity and the signal transduction pathways involved is a key event in tumourigenesis. This review focuses on the oncogenic viruses and the role of targeting PDZ proteins in the virus life cycle and the contribution of virus-PDZ protein interactions to virus-mediated oncogenesis. We highlight how many of the viral associations with PDZ proteins lead to deregulation of PI3K/AKT signalling, benefitting virus replication but as a consequence also contributing to oncogenesis.
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Affiliation(s)
- Claire D James
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Vincent Drive, Birmingham B15 2TT, UK.
- Present address; Virginia Commonwealth University, School of Dentistry, W. Baxter Perkinson Jr. Building, 521 North 11th Street, P.O. Box 980566, Richmond, VA 23298-0566, USA.
| | - Sally Roberts
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Vincent Drive, Birmingham B15 2TT, UK.
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Doorbar J, Egawa N, Griffin H, Kranjec C, Murakami I. Human papillomavirus molecular biology and disease association. Rev Med Virol 2015; 25 Suppl 1:2-23. [PMID: 25752814 PMCID: PMC5024016 DOI: 10.1002/rmv.1822] [Citation(s) in RCA: 530] [Impact Index Per Article: 58.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 06/12/2014] [Accepted: 06/25/2014] [Indexed: 12/27/2022]
Abstract
Human papillomaviruses (HPVs) have evolved over millions of years to propagate themselves in a range of different animal species including humans. Viruses that have co‐evolved slowly in this way typically cause chronic inapparent infections, with virion production in the absence of apparent disease. This is the case for many Beta and Gamma HPV types. The Alpha papillomavirus types have however evolved immunoevasion strategies that allow them to cause persistent visible papillomas. These viruses activate the cell cycle as the infected epithelial cell differentiates in order to create a replication competent environment that allows viral genome amplification and packaging into infectious particles. This is mediated by the viral E6, E7, and E5 proteins. High‐risk E6 and E7 proteins differ from their low‐risk counterparts however in being able to drive cell cycle entry in the upper epithelial layers and also to stimulate cell proliferation in the basal and parabasal layers. Deregulated expression of these cell cycle regulators underlies neoplasia and the eventual progression to cancer in individuals who cannot resolve high‐risk HPV infection. Most work to date has focused on the study of high‐risk HPV types such as HPV 16 and 18, which has led to an understanding of the molecular pathways subverted by these viruses. Such approaches will lead to the development of better strategies for disease treatment, including targeted antivirals and immunotherapeutics. Priorities are now focused toward understanding HPV neoplasias at sites other than the cervix (e.g. tonsils, other transformation zones) and toward understanding the mechanisms by which low‐risk HPV types can sometimes give rise to papillomatosis and under certain situations even cancers. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- John Doorbar
- Department of Pathology, University of Cambridge, Cambridge, UK
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Human Papillomaviruses; Epithelial Tropisms, and the Development of Neoplasia. Viruses 2015; 7:3863-90. [PMID: 26193301 PMCID: PMC4517131 DOI: 10.3390/v7072802] [Citation(s) in RCA: 335] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 07/03/2015] [Accepted: 07/07/2015] [Indexed: 12/13/2022] Open
Abstract
Papillomaviruses have evolved over many millions of years to propagate themselves at specific epithelial niches in a range of different host species. This has led to the great diversity of papillomaviruses that now exist, and to the appearance of distinct strategies for epithelial persistence. Many papillomaviruses minimise the risk of immune clearance by causing chronic asymptomatic infections, accompanied by long-term virion-production with only limited viral gene expression. Such lesions are typical of those caused by Beta HPV types in the general population, with viral activity being suppressed by host immunity. A second strategy requires the evolution of sophisticated immune evasion mechanisms, and allows some HPV types to cause prominent and persistent papillomas, even in immune competent individuals. Some Alphapapillomavirus types have evolved this strategy, including those that cause genital warts in young adults or common warts in children. These strategies reflect broad differences in virus protein function as well as differences in patterns of viral gene expression, with genotype-specific associations underlying the recent introduction of DNA testing, and also the introduction of vaccines to protect against cervical cancer. Interestingly, it appears that cellular environment and the site of infection affect viral pathogenicity by modulating viral gene expression. With the high-risk HPV gene products, changes in E6 and E7 expression are thought to account for the development of neoplasias at the endocervix, the anal and cervical transformation zones, and the tonsilar crypts and other oropharyngeal sites. A detailed analysis of site-specific patterns of gene expression and gene function is now prompted.
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Ganti K, Broniarczyk J, Manoubi W, Massimi P, Mittal S, Pim D, Szalmas A, Thatte J, Thomas M, Tomaić V, Banks L. The Human Papillomavirus E6 PDZ Binding Motif: From Life Cycle to Malignancy. Viruses 2015; 7:3530-51. [PMID: 26147797 PMCID: PMC4517114 DOI: 10.3390/v7072785] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 06/24/2015] [Accepted: 06/25/2015] [Indexed: 01/01/2023] Open
Abstract
Cancer-causing HPV E6 oncoproteins are characterized by the presence of a PDZ binding motif (PBM) at their extreme carboxy terminus. It was long thought that this region of E6 had a sole function to confer interaction with a defined set of cellular substrates. However, more recent studies have shown that the E6 PBM has a complex pattern of regulation, whereby phosphorylation within the PBM can regulate interaction with two classes of cellular proteins: those containing PDZ domains and the members of the 14-3-3 family of proteins. In this review, we explore the roles that the PBM and its ligands play in the virus life cycle, and subsequently how these can inadvertently contribute towards the development of malignancy. We also explore how subtle alterations in cellular signal transduction pathways might result in aberrant E6 phosphorylation, which in turn might contribute towards disease progression.
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Affiliation(s)
- Ketaki Ganti
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Justyna Broniarczyk
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Wiem Manoubi
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Paola Massimi
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Suruchi Mittal
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - David Pim
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Anita Szalmas
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Jayashree Thatte
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Miranda Thomas
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Vjekoslav Tomaić
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
| | - Lawrence Banks
- International Center for Genetic Engineering and Biotechnology, Area Science Park, Padriciano 99, Trieste 34149, Italy.
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Quantifying domain-ligand affinities and specificities by high-throughput holdup assay. Nat Methods 2015; 12:787-93. [PMID: 26053890 PMCID: PMC4521981 DOI: 10.1038/nmeth.3438] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 04/19/2015] [Indexed: 12/21/2022]
Abstract
Many protein interactions are mediated by small linear motifs interacting specifically with defined families of globular domains. Quantifying the specificity of a motif requires measuring and comparing its binding affinities to all its putative target domains. To this aim, we developed the high-throughput holdup assay, a chromatographic approach that can measure up to a thousand domain-motif equilibrium binding affinities per day. Extracts of overexpressed domains are incubated with peptide-coated resins and subjected to filtration. Binding affinities are deduced from microfluidic capillary electrophoresis of flow-throughs. After benchmarking the approach on 210 PDZ-peptide pairs with known affinities, we determined the affinities of two viral PDZ-binding motifs derived from Human Papillomavirus E6 oncoproteins for 209 PDZ domains covering 79% of the human PDZome. We obtained exquisite sequence-dependent binding profiles, describing quantitatively the PDZome recognition specificity of each motif. This approach, applicable to many categories of domain-ligand interactions, has a wide potential for quantifying the specificities of interactomes.
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50
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Seiki T, Nagasaka K, Kranjec C, Kawana K, Maeda D, Nakamura H, Taguchi A, Matsumoto Y, Arimoto T, Wada-Hiraike O, Oda K, Nakagawa S, Yano T, Fukayama M, Banks L, Osuga Y, Fujii T. HPV-16 impairs the subcellular distribution and levels of expression of protein phosphatase 1γ in cervical malignancy. BMC Cancer 2015; 15:230. [PMID: 25886518 PMCID: PMC4399203 DOI: 10.1186/s12885-015-1141-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2014] [Accepted: 02/27/2015] [Indexed: 12/16/2022] Open
Abstract
Background The high risk Human Papillomavirus (HPV) E6 oncoproteins play an essential role in the development of cervical malignancy. Important cellular targets of E6 include p53 and the PDZ domain containing substrates such as hScrib and Dlg. We recently showed that hScrib activity was mediated in part through recruitment of protein phosphatase 1γ (PP1γ). Methods Expression patterns of hScrib and PP1γ were assessed by immunohistochemistry of HPV-16 positive cervical intraepithelial neoplasm (CIN), classified as CIN1 (n = 4), CIN2 (n = 8), CIN3 (n = 8), cervical carcinoma tissues (n = 11), and HPV-negative cervical tissues (n = 8), as well as by subfractionation assay of the HPV-16 positive cervical cancer cell lines, CaSki and SiHa. To explore the effects of the HPV-16 oncoproteins, we have performed siRNA knockdown of E6/E7 expression, and monitored the effects on the expression patterns of hScrib and PP1γ. Results We show that PP1γ levels in HPV-16 positive tumour cells are reduced in an E6/E7 dependent manner. Residual PP1γ in these cells is found mostly in the cytoplasm as opposed to the nucleus where it is predominantly found in normal cells. We have found a striking concordance with redistribution in the pattern of expression (9/11; 81.8%) and loss of PP1γ expression in HPV-16 positive cervical tumours (2/11; 18.2%). Furthermore, this loss of PP1γ expression and redistribution in the pattern of expression occurs progressively as the lesions develop (8/8; 100%). Conclusion Together, these results suggest that PP1γ may be a novel target of the HPV-16 oncoproteins and indicate that it might be a potential novel biomarker for HPV-16 induced malignancy.
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Affiliation(s)
- Takayuki Seiki
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Kazunori Nagasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Christian Kranjec
- International Centre for Genetic Engineering and Biotechnology, Area Science Park, Padriciano-99, I-34012, Trieste, Italy.
| | - Kei Kawana
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Daichi Maeda
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Hiroe Nakamura
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Ayumi Taguchi
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Yoko Matsumoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Takahide Arimoto
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Osamu Wada-Hiraike
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Katsutoshi Oda
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Shunsuke Nakagawa
- Department of Obstetrics and Gynecology, Graduate School of Medicine, Teikyo University, Tokyo, 173-8605, Japan.
| | - Tetsu Yano
- Department of Obstetrics and Gynecology, National Center for Global Health and Medicine, Tokyo, 162-8655, Japan.
| | - Masashi Fukayama
- Department of Pathology, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Lawrence Banks
- International Centre for Genetic Engineering and Biotechnology, Area Science Park, Padriciano-99, I-34012, Trieste, Italy.
| | - Yutaka Osuga
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
| | - Tomoyuki Fujii
- Department of Obstetrics and Gynecology, Faculty of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
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