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Moodley D, Botes A. A carboxymethyl cellulase from the yeast Cryptococcus gattii WM276: Expression, purification and characterisation. Protein Expr Purif 2024; 225:106594. [PMID: 39197672 DOI: 10.1016/j.pep.2024.106594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 08/21/2024] [Accepted: 08/25/2024] [Indexed: 09/01/2024]
Abstract
Cryptococcus gattii and its medical implications have been extensively studied. There is, however, a significant knowledge gap regarding cryptococcal survival in its environmental niche, namely woody material, which is glaring given that infection is linked to environmental populations. A gene from C. gattii (WM276), the predominant global molecular type (VGI), has been sequenced and annotated as a putative cellulase. It is therefore, of both medical and industrial intertest to delineate the structure and function of this enzyme. A homology model of the enzyme was constructed as a fusion protein to a maltose binding protein (MBP). The CGB_E4160W gene was overexpressed as an MBP fusion enzyme in Escherichia coli T7 cells and purified to homogeneity using amylose affinity chromatography. The structural and functional character of the enzyme was investigated using fluorescence spectroscopy and enzyme activity assays, respectively. The optimal enzyme pH and temperature were found to be 6.0 and 50 °C, respectively, with an optimal salt concentration of 500 mM. Secondary structure analysis using Far-UV CD reveals that the MBP fusion protein is primarily α-helical with some β-sheets. Intrinsic tryptophan fluorescence illustrates that the MBP-cellulase undergoes a conformational change in the presence of its substrate, CMC-Na+. The thermotolerant and halotolerant nature of this particular cellulase, makes it useful for industrial applications, and adds to our understanding of the pathogen's environmental physiology.
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Affiliation(s)
- Dylan Moodley
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, South Africa
| | - Angela Botes
- School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, South Africa.
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2
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Catalán-Castorena O, Garibay-Cerdenares OL, Illades-Aguiar B, Rodríguez-Ruiz HA, Zubillaga-Guerrero MI, Leyva-Vázquez MA, Encarnación-Guevara S, Alarcón-Romero LDC. The role of HR-HPV integration in the progression of premalignant lesions into different cancer types. Heliyon 2024; 10:e34999. [PMID: 39170128 PMCID: PMC11336306 DOI: 10.1016/j.heliyon.2024.e34999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 07/19/2024] [Accepted: 07/21/2024] [Indexed: 08/23/2024] Open
Abstract
High-risk human papillomavirus (HR-HPV) is associated with the development of different types of cancer, such as cervical, head and neck (including oral, laryngeal, and oropharyngeal), vulvar, vaginal, penile, and anal cancers. The progression of premalignant lesions to cancer depends on factors associated with the host cell and the different epithelia infected by HPV, such as basal cells of the flat epithelium and the cells of the squamocolumnar transformation zone (STZ) found in the uterine cervix and the anal canal, which is rich in heparan sulfate proteoglycans and integrin-like receptors. On the other hand, factors associated with the viral genotype, infection with multiple viruses, viral load, viral persistence, and type of integration determine the viral breakage pattern and the sites at which the virus integrates into the host cell genome (introns, exons, intergenic regions), inducing the loss of function of tumor suppressor genes and increasing oncogene expression. This review describes the role of viral integration and the molecular mechanisms induced by HR-HPV in different types of tissues. The purpose of this review is to identify the common factors associated with the role of integration events in the progression of premalignant lesions in different types of cancer.
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Affiliation(s)
- Oscar Catalán-Castorena
- Research in Cytopathology and Histochemical Laboratory, Faculty of Chemical and Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
| | - Olga Lilia Garibay-Cerdenares
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
- CONAHCyT-Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
| | - Berenice Illades-Aguiar
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
| | - Hugo Alberto Rodríguez-Ruiz
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
| | - Ma. Isabel Zubillaga-Guerrero
- Research in Cytopathology and Histochemical Laboratory, Faculty of Chemical and Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
| | - Marco Antonio Leyva-Vázquez
- Molecular Biomedicine Laboratory, Faculty of Chemical-Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
| | | | - Luz del Carmen Alarcón-Romero
- Research in Cytopathology and Histochemical Laboratory, Faculty of Chemical and Biological Sciences, Autonomous University of Guerrero, Chilpancingo, Guerrero, 39089, Mexico
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Bel Haj Rhouma R, Ardhaoui M, Othman H, Ben Jemia Z, Zine El Abidine A, Fehri E, Ouerheni K, Laassili T, Tounsi H, Guizani I, Boubaker MS, Ennaifer E. The E6 gene polymorphism of Human papillomavirus 16 in relation to the risk of cervical cancer in Tunisian women. INFECTION, GENETICS AND EVOLUTION : JOURNAL OF MOLECULAR EPIDEMIOLOGY AND EVOLUTIONARY GENETICS IN INFECTIOUS DISEASES 2023; 116:105536. [PMID: 38048896 DOI: 10.1016/j.meegid.2023.105536] [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: 09/21/2023] [Revised: 11/27/2023] [Accepted: 12/01/2023] [Indexed: 12/06/2023]
Abstract
Human papillomavirus type 16 (HPV-16) is the most prevalent HPV type worldwide and in Tunisia and the major carcinogenic HPV type found in cervical precancers and cancers. Previous studies have reported that genetic diversity of HPV16-E6 oncoprotein might be associated with cervical intraepithelial neoplasia progression. In this study we aimed to investigate the prevalence of HPV-16 E6 variants in precancerous lesions in Tunisian population to assess potential correlation with disease severity. Positive HPV cervical samples were obtained from the Laboratory of Anatomy Pathology of Pasteur Institute of Tunis. Cytological study was performed to identify cervical precancerous lesions. HPVs were typed using Reverse Line Hybridization. Only samples with HPV-16 single infection were selected for HP16-E6 genetic diversity investigation. HPV-16 E6 gene amplification was performed by PCR using specific primers and sequenced by Sanger Sequencing. The multiple alignment of generated sequences was performed using MEGAX software. Phylogenetic tree was constructed using Maximum Likehood method. The ternary complex of E6, E6AP and p53 core domain was used to perform in silico point mutations and thermodynamic calculations to assess stability and binding affinity. Genetic analysis of Tunisian E6-HPV16 sequences showed the presence of three lineages: European (A), African (C) and Asian American (D). Interestingly, the EUR variants were identified as the dominant lineage of HPV-16 and HPV-16 E6 350 G (L83V) was the most detected mutation in precancerous lesions. Modelling data showed that African variants induced the largest destabilizing effect on E6 structure and decreasing thereby in the affinity toward E6AP. Therefore, women infected with European variants are associated with low and high intraepithelial lesions. The findings give useful information for personalized decision algorithms of intra-epithelial cervical neoplasia in Tunisian women.
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Affiliation(s)
- Rahima Bel Haj Rhouma
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia; High Institute of Sciences and Technology of Environments of Borj-Cedria, University of Carthage, Tunis, Tunisia.
| | - Monia Ardhaoui
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Houcemeddine Othman
- Laboratory of Human Cytogenetics, Molecular Genetics and Biology of Human Reproduction, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Sydney Brenner Institute for Molecular Bioscience, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Zeineb Ben Jemia
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Amira Zine El Abidine
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Emna Fehri
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Kaouther Ouerheni
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Thalja Laassili
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Haifa Tounsi
- Department of Human and Experimental Pathology, Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Ikram Guizani
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Med Samir Boubaker
- Department of Human and Experimental Pathology, Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
| | - Emna Ennaifer
- Laboratory of Molecular Epidemiology and Experimental Pathology (LR16IPT04), Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia; Department of Human and Experimental Pathology, Pasteur Institute of Tunis, University Tunis El Manar, Tunis, Tunisia
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4
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Skelin J, Tomaić V. Comparative Analysis of Alpha and Beta HPV E6 Oncoproteins: Insights into Functional Distinctions and Divergent Mechanisms of Pathogenesis. Viruses 2023; 15:2253. [PMID: 38005929 PMCID: PMC10674601 DOI: 10.3390/v15112253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/26/2023] Open
Abstract
Human papillomaviruses (HPVs) represent a diverse group of DNA viruses that infect epithelial cells of mucosal and cutaneous tissues, leading to a wide spectrum of clinical outcomes. Among various HPVs, alpha (α) and beta (β) types have garnered significant attention due to their associations with human health. α-HPVs are primarily linked to infections of the mucosa, with high-risk subtypes, such as HPV16 and HPV18, being the major etiological agents of cervical and oropharyngeal cancers. In contrast, β-HPVs are predominantly associated with cutaneous infections and are commonly found on healthy skin. However, certain β-types, notably HPV5 and HPV8, have been implicated in the development of non-melanoma skin cancers in immunocompromised individuals, highlighting their potential role in pathogenicity. In this review, we comprehensively analyze the similarities and differences between α- and β-HPV E6 oncoproteins, one of the major drivers of viral replication and cellular transformation, and how these impact viral fitness and the capacity to induce malignancy. In particular, we compare the mechanisms these oncoproteins use to modulate common cellular processes-apoptosis, DNA damage repair, cell differentiation, and the immune response-further shedding light on their shared and distinct features, which enable them to replicate at divergent locations of the human body and cause different types of cancer.
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Affiliation(s)
| | - Vjekoslav Tomaić
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia;
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Alsanea M, Alsaleh A, Obeid D, Alhadeq F, Alahideb B, Alhamlan F. Genetic Variability in the E6, E7, and L1 Genes of Human Papillomavirus Types 16 and 18 among Women in Saudi Arabia. Viruses 2022; 15:109. [PMID: 36680149 PMCID: PMC9862970 DOI: 10.3390/v15010109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/06/2022] [Accepted: 12/14/2022] [Indexed: 01/03/2023] Open
Abstract
Cervical cancer is the eighth most frequent cancer in Saudi Arabia, and most cases are associated with human papillomavirus (HPV) types 16 and 18. HPV-induced carcinogenesis may be associated with the intra-type variant, genetic mutation, or the continuous expression of viral oncogenes E6 and E7. Infection efficiency and virus antigenicity may be affected by changes in the L1 gene. Thus, this retrospective cohort study analyzed E6, E7, and L1 gene mutations in cervical specimens collected from Saudi women positive for HPV16 or HPV18 infection. HPV16 and HPV18 lineages in these specimens were predominantly from Europe. The L83V mutation in the E6 gene of HPV16 showed sufficient oncogenic potential for progression to cervical cancer. By contrast, the L28F mutation in the E7 gene of HPV16 was associated with a low risk of cervical cancer. Other specific HPV16 and HPV18 mutations were associated with an increased risk of cancer, cancer progression, viral load, and age. Four novel mutations, K53T, K53N, R365P, and K443N, were identified in the L1 gene of HPV16. These findings for HPV16 and HPV18 lineages and mutations in the E6, E7, and L1 genes among women in Saudi Arabia may inform the design and development of effective molecular diagnostic tests and vaccination strategies for the Saudi population.
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Affiliation(s)
- Madain Alsanea
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Asma Alsaleh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11564, Saudi Arabia
| | - Dalia Obeid
- Public Health Laboratories, Public Health Authority, Riyadh 11564, Saudi Arabia
| | - Faten Alhadeq
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Basma Alahideb
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
| | - Fatimah Alhamlan
- Department of Infection and Immunity, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh 11564, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh 11564, Saudi Arabia
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Pondehnezhadan E, Chamani A, Salabi F, Soleimani R. Identification, characterization, and molecular phylogeny of scorpion enolase ( Androctonus crassicauda and Hemiscorpius lepturus). TOXIN REV 2022. [DOI: 10.1080/15569543.2022.2080223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Elham Pondehnezhadan
- Environmental Science Department, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Atefeh Chamani
- Environmental Science Department, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
| | - Fatemeh Salabi
- Razi Vaccine and Serum Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, Iran
| | - Reihaneh Soleimani
- Demartment of Plant Protection, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran
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7
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Araujo-Arcos LE, Montaño S, Bello-Rios C, Garibay-Cerdenares OL, Leyva-Vázquez MA, Illades-Aguiar B. Molecular insights into the interaction of HPV-16 E6 variants against MAGI-1 PDZ1 domain. Sci Rep 2022; 12:1898. [PMID: 35115618 PMCID: PMC8814009 DOI: 10.1038/s41598-022-05995-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/19/2022] [Indexed: 11/21/2022] Open
Abstract
Oncogenic protein E6 from Human Papilloma Virus 16 (HPV-16) mediates the degradation of Membrane-associated guanylate kinase with inverted domain structure-1 (MAGI-1), throughout the interaction of its protein binding motif (PBM) with the Discs-large homologous regions 1 (PDZ1) domain of MAG1-1. Generic variation in the E6 gene that translates to changes in the protein’s amino acidic sequence modifies the interaction of E6 with the cellular protein MAGI-1. MAGI-1 is a scaffolding protein found at tight junctions of epithelial cells, where it interacts with a variety of proteins regulating signaling pathways. MAGI-1 is a multidomain protein containing two WW (rsp-domain-9), one guanylate kinase-like, and six PDZ domains. PDZ domains played an important role in the function of MAGI-1 and served as targets for several viral proteins including the HPV-16 E6. The aim of this work was to evaluate, with an in silico approach, employing molecular dynamics simulation and protein–protein docking, the interaction of the intragenic variants E-G350 (L83V), E-C188/G350 (E29Q/L83V), E-A176/G350 (D25N/L83V), E6-AAa (Q14H/H78Y/83V) y E6-AAc (Q14H/I27RH78Y/L83V) and E6-reference of HPV-16 with MAGI-1. We found that variants E-G350, E-C188/G350, E-A176/G350, AAa and AAc increase their affinity to our two models of MAGI-1 compared to E6-reference.
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Affiliation(s)
- Lilian Esmeralda Araujo-Arcos
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autonóma de Guerrero, 39090, Chilpancingo, CP, México
| | - Sarita Montaño
- Laboratorio de Bioinformática y Simulación Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Sinaloa, 80030, Culiacán Sinaloa, CP, México.
| | - Ciresthel Bello-Rios
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autonóma de Guerrero, 39090, Chilpancingo, CP, México
| | - Olga Lilia Garibay-Cerdenares
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autonóma de Guerrero, 39090, Chilpancingo, CP, México.,CONACyT-Universidad Autónoma de Guerrero, 39087, Chilpancingo, CP, México
| | - Marco Antonio Leyva-Vázquez
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autonóma de Guerrero, 39090, Chilpancingo, CP, México
| | - Berenice Illades-Aguiar
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autonóma de Guerrero, 39090, Chilpancingo, CP, México.
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Hadami K, Saby C, Dakka N, Collin G, Attaleb M, Khyatti M, Filali-Maltouf A, Morjani H, El Mzibri M. Degradation of p53 by HPV16-E6 variants isolated from cervical cancer specimens of Moroccan women. Gene 2021; 791:145709. [PMID: 33984442 DOI: 10.1016/j.gene.2021.145709] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/14/2021] [Accepted: 05/06/2021] [Indexed: 12/24/2022]
Abstract
Cervical cancer is the second most diagnosed cancer in Moroccan women. The main etiological factor for developing cervical cancer is the persistent infection with HPV16. Genetic studies have reported the occurrence of amino acid variations within the E6 oncoprotein that promotes host cell transformation by targeting p53 for degradation. To verify the biological effects of E6 polymorphisms towards p53 degradation, HPV16-E6 prototype and 7 variants isolated from cervical cancer biopsies of Moroccan women were evaluated for their activities by transient expression assays using pcDNA3.1-E6 constructs in C33A cell line. Expression of E6 genes in transfected cells was detected with reverse transcription PCR (RT-PCR), then, p53 levels were evaluated by western blot analysis. Significant dissimilarities in p53 degradation activities of HPV16-E6 prototype and intratypic variants were noticed. As compared to the prototype, the highest p53 degradation were exhibited by the African variants Af2-a/r, Af1-d/G295 and Af2-a/G285 (p < 0.001), followed by the European variants E- C442/G350 and E-G350/r (p < 0.01), then, the North American variant NA1-b/r (p < 0.05). The inter-variant differences were statistically significant between Af2-a/r variant and the North American variants NA1-b/r and NA1 (p < 0.05). Thus, the Af2-a/r variant was significantly more active in degrading p53 in our in vitro experiments (p < 0.0001). Our findings support the fact that HPV16-E6 variations have a biological impact on degrading p53, and so, represent a significant carcinogenic potential for developing cervical cancer.
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Affiliation(s)
- Khaoula Hadami
- Biology and Medical Research Unit, National Centre for Energy, Nuclear Sciences and Techniques (CNESTEN), Rabat, Morocco; Biology of Human Pathologies Laboratory, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Charles Saby
- BioSpecT-EA7506 Unit, Faculty of Pharmacy, Reims Champagne-Ardenne University, Reims, France
| | - Nadia Dakka
- Biology of Human Pathologies Laboratory, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Guillaume Collin
- BioSpecT-EA7506 Unit, Faculty of Pharmacy, Reims Champagne-Ardenne University, Reims, France
| | - Mohammed Attaleb
- Biology and Medical Research Unit, National Centre for Energy, Nuclear Sciences and Techniques (CNESTEN), Rabat, Morocco
| | - Meriem Khyatti
- Oncovirology Laboratory, Pasteur Institute, Casablanca, Morocco
| | - Abdelkarim Filali-Maltouf
- Microbiology and Molecular Biology Laboratory, Faculty of Sciences, Mohammed V University, Rabat, Morocco
| | - Hamid Morjani
- BioSpecT-EA7506 Unit, Faculty of Pharmacy, Reims Champagne-Ardenne University, Reims, France
| | - Mohammed El Mzibri
- Biology and Medical Research Unit, National Centre for Energy, Nuclear Sciences and Techniques (CNESTEN), Rabat, Morocco.
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Garibay-Cerdenares OL, Sánchez-Meza LV, Encarnación-Guevara S, Hernández-Ortíz M, Martínez-Batallar G, Torres-Rojas FI, Mendoza-Catalán MÁ, Moral-Hernández OD, Leyva-Vázquez MA, Illades-Aguiar B. Effect of HPV 16 E6 Oncoprotein Variants on the Alterations of the Proteome of C33A Cells. Cancer Genomics Proteomics 2021; 18:273-283. [PMID: 33893080 DOI: 10.21873/cgp.20258] [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] [Received: 01/09/2021] [Revised: 02/19/2021] [Accepted: 02/23/2021] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND/AIM The E6 genotypic variants of HPV 16 identified in lesions of women with cervical cancer (CC) in Southern of Mexico include the E-G350, AAa, AAc, E-C188/G350, and E-A176/G350, transcriptomic analysis cells transfected with those variants showed to induce differential expression of the host genes involved in the development of CC, the aim of this work was to understand how the over-expression of the E6 oncoprotein and its variants can induce molecular mechanisms that lead to more aggressive HPV 16 phenotypes in cervical cancer and which proteins could be associated with the process. MATERIALS AND METHODS Total extracts from C33A, C33A mock, C33A AAa, C33A E-C188/G350, C33A E-A176/G350, and C33A E-prototype cells were analyzed using 2D electrophoresis, PDQuest software and mass spectrometry, validation of results was performed through qPCR. RESULTS Statistically significant differential expression of 122 spots was detected, 12 of the identified proteins were associated with metabolism and metabolic programming. Out of these CCT8, ENO and ALDH1A were further validated. CONCLUSION CCT8 and ALDH1A were found to be over-expressed in C33A AAa and C33A E-A176/G350, compared to the E prototype. Both proteins could be associated with a most aggressive phenotype due to their relationship with metabolism, protein folding and stemness, mechanisms associated to E6 that could be useful in the design of new therapies.
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Affiliation(s)
- Olga Lilia Garibay-Cerdenares
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México.,CONACyT- Universidad Autónoma de Guerrero, Chilpancingo, México
| | - Luz Victoria Sánchez-Meza
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México
| | | | | | | | - Francisco Israel Torres-Rojas
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México
| | - Miguel Ángel Mendoza-Catalán
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México
| | - Oscar Del Moral-Hernández
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México
| | - Marco Antonio Leyva-Vázquez
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México
| | - Berenice Illades-Aguiar
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico Biológicas, Universidad Autónoma de Guerrero, Chilpancingo, México;
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