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Macheroni C, Leite GGF, Souza DS, Vicente CM, Lacerda JT, Moraes MN, Juliano MA, Porto CS. Activation of estrogen receptor induces differential proteomic responses mainly involving migration, invasion, and tumor development pathways in human testicular embryonal carcinoma NT2/D1 cells. J Steroid Biochem Mol Biol 2024; 237:106443. [PMID: 38092129 DOI: 10.1016/j.jsbmb.2023.106443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/27/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
The aims of the present study were to investigate the global changes on proteome of human testicular embryonal carcinoma NT2/D1 cells treated with 17β-estradiol (E2), and the effects of this hormone on migration, invasion, and colony formation of these cells. A quantitative proteomic analysis identified the presence of 1230 proteins in both E2-treated and control cells. The analysis revealed 75 differentially abundant proteins (DAPs), out of which 43 proteins displayed a higher abundance and, 30 proteins showed a lower abundance in E2-treated NT2/D1 cancer cells. Functional analysis using IPA highlighted some activation processes such as migration, invasion, metastasis, and tumor growth. Interestingly, the treatment with E2 and ERβ-selective agonist DPN increased the migration of NT2/D1 cells. On the other hand, ERα-selective agonist PPT did not modify cell migration, indicating that ERβ is the upstream receptor involved in this process. The activation of ERβ increased the invasion and anchorage‑independent growth of NT2/D1 cells more intensely than ERα. ERα and ERβ may play overlapping roles on invasion and colony formation of these cells. Further studies are required to clarify the mechanism underlying these effects. The molecular mechanisms revealed by proteomic and functional studies might also guide the development of potential targets for a better understanding of the biology of these cells and novel treatments for non-seminoma in the future.
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Affiliation(s)
- Carla Macheroni
- Laboratory of Experimental Endocrinology, Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, Vila Clementino, São Paulo, SP 04039-032, Brazil
| | - Giuseppe Gianini Figueirêdo Leite
- Division of Infectious Diseases, Department of Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, Vila Clementino, São Paulo, SP 04039-032, Brazil
| | - Deborah Simão Souza
- Laboratory of Experimental Endocrinology, Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, Vila Clementino, São Paulo, SP 04039-032, Brazil
| | - Carolina Meloni Vicente
- Laboratory of Experimental Endocrinology, Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, Vila Clementino, São Paulo, SP 04039-032, Brazil
| | - José Thalles Lacerda
- Department of Physiology, Instituto de Biociências, Universidade de São Paulo, Rua do Matão 277, Butantã, São Paulo, SP 05508-090, Brazil
| | - Maria Nathália Moraes
- Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo, Av. Conceição 515, Diadema, São Paulo, SP, 09920-000, Brazil
| | - Maria Aparecida Juliano
- Department of Biophysics, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Três de Maio, 100, Vila Clementino, São Paulo, SP 04044-020, Brazil
| | - Catarina Segreti Porto
- Laboratory of Experimental Endocrinology, Department of Pharmacology, Escola Paulista de Medicina, Universidade Federal de São Paulo, Rua Pedro de Toledo 669, Vila Clementino, São Paulo, SP 04039-032, Brazil.
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Shah JR, Dong T, Phung AT, Reid T, Larson C, Sanchez AB, Oronsky B, Blair SL, Aisagbonhi O, Trogler WC, Kummel AC. Development of Adenovirus Containing Liposomes Produced by Extrusion vs. Homogenization: A Comparison for Scale-Up Purposes. Bioengineering (Basel) 2022; 9:620. [PMID: 36354531 PMCID: PMC9687354 DOI: 10.3390/bioengineering9110620] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/21/2022] [Accepted: 10/22/2022] [Indexed: 06/28/2024] Open
Abstract
Adenovirus (Ad) is a widely studied viral vector for cancer therapy as it can be engineered to cause selective lysis of cancer cells. However, Ad delivery is limited in treating cancers that do not have coxsackievirus and adenovirus receptors (CAR). To overcome this challenge, Ad-encapsulated liposomes were developed that enhance the delivery of Ads and increase therapeutic efficacy. Cationic empty liposomes were manufactured first, to which an anionic Ad were added, which resulted in encapsulated Ad liposomes through charge interaction. Optimization of the liposome formula was carried out with series of formulation variables experiments using an extrusion process, which is ideal for laboratory-scale small batches. Later, the optimized formulation was manufactured with a homogenization technique-A high shear rotor-stator blending, that is ideal for large-scale manufacturing and is in compliance with Good Manufacturing Practices (GMP). Comparative in vitro transduction, physicochemical characterization, long-term storage stability at different temperature conditions, and in vivo animal studies were performed. Ad encapsulated liposomes transduced CAR deficient cells 100-fold more efficiently than the unencapsulated Ad (p ≤ 0.0001) in vitro, and 4-fold higher in tumors injected in nude mice in vivo. Both extrusion and homogenization performed similarly-with equivalent in vitro and in vivo transduction efficiencies, physicochemical characterization, and long-term storage stability. Thus, two Ad encapsulated liposomes preparation methods used herein, i.e., extrusion vs. homogenization were equivalent in terms of enhanced Ad performance and long-term storage stability; this will, hopefully, facilitate translation to the clinic.
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Affiliation(s)
- Jaimin R. Shah
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92037, USA
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
- Materials Science and Engineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Tao Dong
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92037, USA
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Abraham T. Phung
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92037, USA
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
- Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
| | - Tony Reid
- EpicentRx, Inc., La Jolla, CA 92037, USA
| | | | | | | | - Sarah L. Blair
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92037, USA
- Department of Surgery, University of California San Diego, La Jolla, CA 92037, USA
| | - Omonigho Aisagbonhi
- Moores Cancer Center, University of California San Diego, La Jolla, CA 92037, USA
- Department of Pathology, University of California San Diego, La Jolla, CA 92037, USA
| | - William C. Trogler
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
| | - Andrew C. Kummel
- Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093, USA
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Parmar HS, Nayak A, Kataria S, Tripathi V, Jaiswal P, Gavel PK, Jha HC, Bhagwat S, Dixit AK, Lukashevich V, Das AK, Sharma R. Restructuring the ONYX-015 adenovirus by using spike protein genes from SARS-CoV-2 and MERS-CoV: Possible implications in breast cancer treatment. Med Hypotheses 2022; 159:110750. [PMID: 35002022 PMCID: PMC8723760 DOI: 10.1016/j.mehy.2021.110750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/15/2021] [Accepted: 11/19/2021] [Indexed: 11/29/2022]
Affiliation(s)
| | - Aakruti Nayak
- School of Biotechnology, Devi Ahilya University, Indore 452001, M.P., India
| | - Shreya Kataria
- School of Biotechnology, Devi Ahilya University, Indore 452001, M.P., India
| | - Versha Tripathi
- School of Biotechnology, Devi Ahilya University, Indore 452001, M.P., India
| | - Pooja Jaiswal
- School of Biotechnology, Devi Ahilya University, Indore 452001, M.P., India
| | | | - Hem Chandra Jha
- Department of Bioscience and Bioengineering, IIT, Simrol, Indore, India
| | - Shivani Bhagwat
- Suraksha Diagnostics Pvt Ltd, Newtown, Rajarhat, Kolkata, West Bengal, India
| | - Amit Kumar Dixit
- Central Council for Research in Ayurvedic Sciences, Kolkata, West Bengal, India
| | - Vladimir Lukashevich
- Institute of Physiology of the National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Apurba Kumar Das
- Department of Bioscience and Bioengineering, IIT, Simrol, Indore, India
| | - Rajesh Sharma
- School of Pharmacy, Devi Ahilya University, Indore 452001, M.P., India
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Ma J, Li N, Zhao J, Lu J, Ma Y, Zhu Q, Dong Z, Liu K, Ming L. Histone deacetylase inhibitor trichostatin A enhances the antitumor effect of the oncolytic adenovirus H101 on esophageal squamous cell carcinoma in vitro and in vivo. Oncol Lett 2017; 13:4868-4874. [PMID: 28599488 DOI: 10.3892/ol.2017.6069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Accepted: 01/10/2017] [Indexed: 12/26/2022] Open
Abstract
Replication-selective oncolytic virotherapy provides a novel modality to treat cancer by inducing cell death in tumor cells but not in normal cells. However, the utilization of oncolytic viruses as a stand-alone treatment is problematic due to their poor transduction efficiency in vivo. H101 was the first oncolytic adenovirus (Ads) to be approved by the Chinese FDA, and exhibits modest antitumor effects when applied as a single agent. The multiple histone deacetylase inhibitor trichostatin A (TSA) has been demonstrated to potently enhance the spread and replication of oncolytic Ads in several infection-resistant types of cancer. The present study aimed to investigate the antitumor effects of H101 in combination with TSA on esophageal squamous cell carcinoma (ESCC) in vitro and in vivo, and determine the mechanisms underlying these effects. H101 and TSA in combination increased the survival of mice harboring human ESCC cell line-tumor xenografts, as compared with mice treated with these agents individually. Therefore, TSA may enhance the antitumor effects of H101 in ESCC.
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Affiliation(s)
- Junfen Ma
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Nan Li
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Jimin Zhao
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Jing Lu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Yanqiu Ma
- Department of Obstetrics and Gynecology, Huaihe Hospital of Henan University, Kaifeng, Henan 475001, P.R. China
| | - Qinghua Zhu
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
| | - Ziming Dong
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Kangdong Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, Henan 450001, P.R. China
| | - Liang Ming
- Department of Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
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Leech AO, Cruz RGB, Hill ADK, Hopkins AM. Paradigms lost-an emerging role for over-expression of tight junction adhesion proteins in cancer pathogenesis. ANNALS OF TRANSLATIONAL MEDICINE 2015; 3:184. [PMID: 26366401 DOI: 10.3978/j.issn.2305-5839.2015.08.01] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 07/23/2015] [Indexed: 12/31/2022]
Abstract
Tight junctions (TJ) are multi-protein complexes located at the apicalmost tip of the lateral membrane in polarised epithelial and endothelial cells. Their principal function is in mediating intercellular adhesion and polarity. Accordingly, it has long been a paradigm that loss of TJ proteins and consequent deficits in cell-cell adhesion are required for tumour cell dissemination in the early stages of the invasive/metastatic cascade. However it is becoming increasingly apparent that TJ proteins play important roles in not just adhesion but also intracellular signalling events, activation of which can contribute to, or even drive, tumour progression and metastasis. In this review, we shall therefore highlight cases wherein the gain of TJ proteins has been associated with signals promoting tumour progression. We will also discuss the potential of overexpressed TJ proteins to act as therapeutic targets in cancer treatment. The overall purpose of this review is not to disprove the fact that loss of TJ-based adhesion contributes to the progression of several cancers, but rather to introduce the growing body of evidence that gain of TJ proteins may have adhesion-independent consequences for promoting progression in other cancers.
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Affiliation(s)
- Astrid O Leech
- Department of Surgery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Rodrigo G B Cruz
- Department of Surgery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Arnold D K Hill
- Department of Surgery, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Ann M Hopkins
- Department of Surgery, Royal College of Surgeons in Ireland, Dublin, Ireland
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Uchino J, Curiel DT, Ugai H. Species D human adenovirus type 9 exhibits better virus-spread ability for antitumor efficacy among alternative serotypes. PLoS One 2014; 9:e87342. [PMID: 24503714 PMCID: PMC3913592 DOI: 10.1371/journal.pone.0087342] [Citation(s) in RCA: 9] [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: 09/24/2013] [Accepted: 12/20/2013] [Indexed: 11/19/2022] Open
Abstract
Species C human adenovirus serotype 5 (HAdV-C5) is widely used as a vector for cancer gene therapy, because it efficiently transduces target cells. A variety of HAdV-C5 vectors have been developed and tested in vitro and in vivo for cancer gene therapy. While clinical trials with HAdV-C5 vectors resulted in effective responses in many cancer patients, administration of HAdV-C5 vectors to solid tumors showed responses in a limited area. A biological barrier in tumor mass is considered to hinder viral spread of HAdV-C5 vectors from infected cells. Therefore, efficient virus-spread from an infected tumor cell to surrounding tumor cells is required for successful cancer gene therapy. In this study, we compared HAdV-C5 to sixteen other HAdV serotypes selected from species A to G for virus-spread ability in vitro. HAdV-D9 showed better virus-spread ability than other serotypes, and its viral progeny were efficiently released from infected cells during viral replication. Although the HAdV-D9 fiber protein contains a binding site for coxsackie B virus and adenovirus receptor (CAR), HAdV-D9 showed expanded tropism for infection due to human CAR (hCAR)-independent attachment to target cells. HAdV-D9 infection effectively killed hCAR-negative cancer cells as well as hCAR-positive cancer cells. These results suggest that HADV-D9, with its better virus-spread ability, could have improved therapeutic efficacy in solid tumors compared to HAdV-C5.
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Affiliation(s)
- Junji Uchino
- Cancer Biology Division, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, United States of America
| | - David T. Curiel
- Cancer Biology Division, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, United States of America
- Biologic Therapeutics Center, Department of Radiation Oncology, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, United States of America
| | - Hideyo Ugai
- Cancer Biology Division, School of Medicine, Washington University in St. Louis, St. Louis, Missouri, United States of America
- * E-mail:
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Presence of the coxsackievirus and adenovirus receptor (CAR) in human neoplasms: a multitumour array analysis. Br J Cancer 2013; 109:1848-58. [PMID: 24022195 PMCID: PMC3790165 DOI: 10.1038/bjc.2013.509] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 08/05/2013] [Accepted: 08/07/2013] [Indexed: 12/23/2022] Open
Abstract
Background: The Coxsackie- and Adenovirus Receptor (CAR) has been assigned two crucial attributes in carcinomas: (a) involvement in the regulation of growth and dissemination and (b) binding for potentially therapeutic adenoviruses. However, data on CAR expression in cancer types are conflicting and several entities have not been analysed to date. Methods: The expression of CAR was assessed by immunohistochemical staining of tissue microarrays (TMA) containing 3714 specimens derived from 100 malignancies and from 273 normal control tissues. Results: The expression of CAR was detected in all normal organs, except in the brain. Expression levels, however, displayed a broad range from being barely detectable (for example, in the thymus) to high abundance expression (for example, in the liver and gastric mucosa). In malignancies, a high degree of variability was notable also, ranging from significantly elevated CAR expression (for example, in early stages of malignant transformation and several tumours of the female reproductive system) to decreased CAR expression (for example, in colon and prostate cancer types). Conclusion: Our results provide a comprehensive insight into CAR expression in neoplasms and indicate that CAR may offer a valuable target for adenovirus-based therapy in a subset of carcinomas. Furthermore, these data suggest that CAR may contribute to carcinogenesis in an entity-dependent manner.
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Novel splice variant CAR 4/6 of the coxsackie adenovirus receptor is differentially expressed in cervical carcinogenesis. J Mol Med (Berl) 2011; 89:621-30. [DOI: 10.1007/s00109-011-0742-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 02/17/2011] [Accepted: 02/21/2011] [Indexed: 12/20/2022]
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He X, Liu J, Yang C, Su C, Zhou C, Zhang Q, Li L, Wu H, Liu X, Wu M, Qian Q. 5/35 fiber-modified conditionally replicative adenovirus armed with p53 shows increased tumor-suppressing capacity to breast cancer cells. Hum Gene Ther 2011; 22:283-92. [PMID: 20846024 DOI: 10.1089/hum.2010.058] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Conditionally replicative adenoviruses (CRAds) are widely used for cancer biotherapy and show a significant growth-suppressing effect on many types of cancer. However, it was reported that breast cancer was highly resistant to the infection of traditionally used adenovirus of serotype 5 (Ad5)-based CRAds. Although partial substitution of the fiber protein of replication-deficient Ad5 with that of adenovirus of serotype 35 (Ad35) facilitated infection of breast cancer cells by adenoviral vectors, it is still unknown whether this modification can improve CRAds in their tumor-eliminating capacity. We generated a 5/35 fiber-modified CRAd with a p53 cDNA construct and investigated whether this alteration in fiber region can make CRAds suppress the growth of breast cancer more effectively. Our data reinforced the proposal that 5/35-modified fiber conferred higher adenovirus infectivity for breast cancer cells than natural Ad5 fiber. Interestingly, 5/35 fiber-modified CRAd replicated more efficiently in breast cancer cells than Ad5-based CRAd. We also found 5/35 fiber-modified CRAd mediated higher expression of p53 in breast cancer cells. In vitro, 5/35 fiber-modified CRAd eliminated breast cancer cells more efficiently. Growth of xenograft tumors in nude mice was also significantly retarded by 5/35 fiber-modified CRAd. The 5/35 fiber-modified CRAd suppressed the growth of breast cancer cells more effectively than Ad5-based CRAd, both in vitro and in vivo. Thus CRAd with 5/35 hybrid fiber may be a promising vector for breast cancer treatment.
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Affiliation(s)
- Xiaoping He
- Laboratory of Gene and Viral Therapy, Eastern Hepatobiliary Surgical Hospital, The Second Military Medical University, Shanghai 200438, China
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Murakami M, Ugai H, Wang M, Belousova N, Dent P, Fisher PB, Glasgow JN, Everts M, Curiel DT. An adenoviral vector expressing human adenovirus 5 and 3 fiber proteins for targeting heterogeneous cell populations. Virology 2010; 407:196-205. [PMID: 20828776 DOI: 10.1016/j.virol.2010.08.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2010] [Revised: 06/09/2010] [Accepted: 08/12/2010] [Indexed: 11/16/2022]
Abstract
Human adenovirus serotype 5 (HAdV-5) attaches to its primary receptor, the coxsackie and adenovirus receptor (CAR) as the first step of infection. However, CAR expression decreases as tumors progress, thereby diminishing the utility of HAdV-5-based vectors for cancer therapy. In contrast, many aggressive tumor cells highly express CD46, a cellular receptor for HAdV-3. We hypothesized that a mosaic HAdV vector, containing two kinds of fiber proteins, would provide extensive transduction in a heterogeneous population of tumor cells with varying expression levels of HAdV receptors. We therefore generated a fiber-mosaic HAdV vector displaying both a chimeric HAdV-3 fiber and the HAdV-5 fiber protein. We verified the structural integrity of purified viral particles and confirmed that the fiber-mosaic HAdV vector has expanded tropism. We conclude that the use of fiber-mosaic HAdV vectors is a promising approach for transducing a heterogeneous cell population with different expression levels of adenovirus receptors.
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Affiliation(s)
- Miho Murakami
- Division of Human Gene Therapy, Department of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35294, USA
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GIAGINIS CONSTANTINOS, ZARROS APOSTOLOS, ALEXANDROU PARASKEVI, KLIJANIENKO JERZY, DELLADETSIMA IOANNA, THEOCHARIS STAMATIOS. Evaluation of coxsackievirus and adenovirus receptor expression in human benign and malignant thyroid lesions. APMIS 2010; 118:210-21. [DOI: 10.1111/j.1600-0463.2009.02582.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Kothari V, Joshi G, Nama S, Somasundaram K, Mulherkar R. HDAC inhibitor valproic acid enhances tumor cell kill in adenovirus-HSVtk mediated suicide gene therapy in HNSCC xenograft mouse model. Int J Cancer 2010; 126:733-42. [PMID: 19569045 DOI: 10.1002/ijc.24700] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Safety, efficacy and enhanced transgene expression are the primary concerns while using any vector for gene therapy. One of the widely used vectors in clinical trials is adenovirus which provides a safe way to deliver the therapeutic gene. However, adenovirus has poor transduction efficiency in vivo since most tumor cells express low coxsackie and adenovirus receptors. Similarly transgene expression remains low, possibly because of the chromatization of adenoviral genome upon infection in eukaryotic cells, an effect mediated by histone deacetylases (HDACs). Using a recombinant adenovirus (Ad-HSVtk) carrying the herpes simplex thymidine kinase (HSVtk) and GFP genes we demonstrate that HDAC inhibitor valproic acid can bring about an increase in CAR expression on host cells and thereby enhanced Ad-HSVtk infectivity. It also resulted in an increase in transgene (HSVtk and GFP) expression. This, in turn, resulted in increased cell kill of HNSCC cells, following ganciclovir treatment in vitro as well as in vivo in a xenograft nude mouse model.
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Affiliation(s)
- Vishal Kothari
- Department of Genetic Engineering Unit, Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Kharghar, Navi Mumbai, Maharashtra, India
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