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GroEL—A Versatile Chaperone for Engineering and a Plethora of Applications. Biomolecules 2022; 12:biom12050607. [PMID: 35625535 PMCID: PMC9138447 DOI: 10.3390/biom12050607] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/13/2022] [Accepted: 04/14/2022] [Indexed: 12/16/2022] Open
Abstract
Chaperones play a vital role in the life of cells by facilitating the correct folding of other proteins and maintaining them in a functional state, being themselves, as a rule, more stable than the rest of cell proteins. Their functional properties naturally tempt investigators to actively adapt them for biotechnology needs. This review will mostly focus on the applications found for the bacterial chaperonin GroE and its counterparts from other organisms, in biotechnology or for research purposes, both in their engineered or intact versions.
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Wang S, Huang W, Li K, Yao Y, Yang X, Bai H, Sun W, Liu C, Ma Y. Engineered outer membrane vesicle is potent to elicit HPV16E7-specific cellular immunity in a mouse model of TC-1 graft tumor. Int J Nanomedicine 2017; 12:6813-6825. [PMID: 28979120 PMCID: PMC5602458 DOI: 10.2147/ijn.s143264] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
PURPOSE Currently, therapeutic tumor vaccines under development generally lack significant effects in human clinical trials. Exploring a powerful antigen delivery system is a potential approach to improve vaccine efficacy. We sought to explore engineered bacterial outer membrane vesicles (OMVs) as a new vaccine carrier for efficiently delivering tumor antigens and provoking robust antitumor immune responses. MATERIALS AND METHODS First, the tumoral antigen human papillomavirus type 16 early protein E7 (HPV16E7) was presented on Escherichia coli-derived OMVs by genetic engineering methods, acquiring the recombinant OMV vaccine. Second, the ability of recombinant OMVs delivering their components and the model antigen green fluorescent protein to antigen-presenting cells was investigated in the macrophage Raw264.7 cells and in bone marrow-derived dendritic cells in vitro. Third, it was evaluated in TC-1 graft tumor model in mice that the recombinant OMVs displaying HPV16E7 stimulated specific cellular immune response and intervened the growth of established tumor. RESULTS E. coli DH5α-derived OMVs could be taken up rapidly by dendritic cells, for which vesicle structure has been proven to be important. OMVs significantly stimulated the expression of dendritic cellmaturation markers CD80, CD86, CD83 and CD40. The HPV16E7 was successfully embedded in engineered OMVs through gene recombinant techniques. Subcutaneous immunization with the engineered OMVs induced E7 antigen-specific cellular immune responses, as shown by the increased numbers of interferon-gamma-expressing splenocytes by enzyme-linked immunospot assay and interferon-gamma-expressing CD4+ and CD8+ cells by flow cytometry analyses. Furthermore, the growth of grafted TC-1 tumors in mice was significantly suppressed by therapeutic vaccination. The recombinant E7 proteins presented by OMVs were more potent than those mixed with wild-type OMVs or administered alone for inducing specific cellular immunity and suppressing tumor growth. CONCLUSION The results indicated that the nano-grade OMVs might be a useful vaccine platform for antigen delivery in cancer immunotherapy.
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Affiliation(s)
- Shijie Wang
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Weiwei Huang
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Kui Li
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Yufeng Yao
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Xu Yang
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Hongmei Bai
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Wenjia Sun
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Cunbao Liu
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
| | - Yanbing Ma
- Laboratory of Molecular Immunology, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College.,Yunnan Key Laboratory of Vaccine Research & Development on Severe Infectious Diseases.,Yunnan Engineering Research Center of Vaccine Research and Development on Severe Infectious Diseases, Kunming, People's Republic of China
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Biotechnology approaches to produce potent, self-adjuvanting antigen-adjuvant fusion protein subunit vaccines. Biotechnol Adv 2017; 35:375-389. [PMID: 28288861 DOI: 10.1016/j.biotechadv.2017.03.005] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 03/08/2017] [Accepted: 03/08/2017] [Indexed: 01/07/2023]
Abstract
Traditional vaccination approaches (e.g. live attenuated or killed microorganisms) are among the most effective means to prevent the spread of infectious diseases. These approaches, nevertheless, have failed to yield successful vaccines against many important pathogens. To overcome this problem, methods have been developed to identify microbial components, against which protective immune responses can be elicited. Subunit antigens identified by these approaches enable the production of defined vaccines, with improved safety profiles. However, they are generally poorly immunogenic, necessitating their administration with potent immunostimulatory adjuvants. Since few safe and effective adjuvants are currently used in vaccines approved for human use, with those available displaying poor potency, or an inability to stimulate the types of immune responses required for vaccines against specific diseases (e.g. cytotoxic lymphocytes (CTLs) to treat cancers), the development of new vaccines will be aided by the availability of characterized platforms of new adjuvants, improving our capacity to rationally select adjuvants for different applications. One such approach, involves the addition of microbial components (pathogen-associated molecular patterns; PAMPs), that can stimulate strong immune responses, into subunit vaccine formulations. The conjugation of PAMPs to subunit antigens provides a means to greatly increase vaccine potency, by targeting immunostimulation and antigen to the same antigen presenting cell. Thus, methods that enable the efficient, and inexpensive production of antigen-adjuvant fusions represent an exciting mean to improve immunity towards subunit antigens. Herein we review four protein-based adjuvants (flagellin, bacterial lipoproteins, the extra domain A of fibronectin (EDA), and heat shock proteins (Hsps)), which can be genetically fused to antigens to enable recombinant production of antigen-adjuvant fusion proteins, with a focus on their mechanisms of action, structural or sequence requirements for activity, sequence modifications to enhance their activity or simplify production, adverse effects, and examples of vaccines in preclinical or human clinical trials.
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Skeate JG, Woodham AW, Einstein MH, Da Silva DM, Kast WM. Current therapeutic vaccination and immunotherapy strategies for HPV-related diseases. Hum Vaccin Immunother 2016; 12:1418-29. [PMID: 26835746 DOI: 10.1080/21645515.2015.1136039] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Carcinomas of the anogenital tract, in particular cervical cancer, remains one of the most common cancers in women, and represent the most frequent gynecological malignancies and the fourth leading cause of cancer death in women worldwide. Human papillomavirus (HPV)-induced lesions are immunologically distinct in that they express viral antigens, which are necessary to maintain the cancerous phenotype. The causal relationship between HPV infection and anogenital cancer has prompted substantial interest in the development of therapeutic vaccines against high-risk HPV types targeting the viral oncoproteins E6 and E7. This review will focus on the most recent clinical trials for immunotherapies for mucosal HPV-induced lesions as well as emerging therapeutic strategies that have been tested in pre-clinical models for HPV-induced diseases. Progress in peptide- and protein-based vaccines, DNA-based vaccines, viral/bacterial vector-based vaccines, immune checkpoint inhibition, immune response modifiers, and adoptive cell therapy for HPV will be discussed.
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Affiliation(s)
- Joseph G Skeate
- a Department of Molecular Microbiology & Immunology , University of Southern California , Los Angeles , CA , USA
| | - Andrew W Woodham
- a Department of Molecular Microbiology & Immunology , University of Southern California , Los Angeles , CA , USA
| | - Mark H Einstein
- b Department of Obstetrics & Gynecology and Women's Health , Rutgers New Jersey Medical School , Newark , NJ , USA
| | - Diane M Da Silva
- c Department of Obstetrics & Gynecology , University of Southern California , Los Angeles , CA , USA.,d Norris Comprehensive Cancer Center, University of Southern California , Los Angeles , CA , USA
| | - W Martin Kast
- a Department of Molecular Microbiology & Immunology , University of Southern California , Los Angeles , CA , USA.,c Department of Obstetrics & Gynecology , University of Southern California , Los Angeles , CA , USA.,d Norris Comprehensive Cancer Center, University of Southern California , Los Angeles , CA , USA
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Chen S, Ni G, Wu X, Zhu B, Liao Z, Wang Y, Liu X. Blocking IL-10 signalling at the time of immunization renders the tumour more accessible to T cell infiltration in mice. Cell Immunol 2015; 300:9-17. [PMID: 26607604 DOI: 10.1016/j.cellimm.2015.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 11/05/2015] [Accepted: 11/11/2015] [Indexed: 12/15/2022]
Abstract
We recently reported that blockade of IL-10 signalling at the time of a human papillomavirus (HPV) long E7 peptide/LPS immunization leads to the regression of established HPV-16 immortalized tumours in mice similar to that induced by long E7 peptide/incomplete Freund's adjuvant (IFA)-based vaccination. In this paper, we demonstrated that blockade of IL-10 signalling at the time of long E7 peptide/LPS could elicit stronger T cells responses and render the tumour more accessible for immune cell infiltration than vaccination with long E7 peptide/IFA. Furthermore, priming with long E7 peptide/LPS and IL10 signalling blockade then boosting with long E7 peptide/IFA elicits stronger CD8+ T cell responses than long E7 peptide/IFA immunization. The results suggest that priming with long E7 peptide/LPS and IL10 signalling inhibitor, then boosting with long E7 peptide/IFA elicits may lead to better HPV infection related tumour regression in clinic.
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Affiliation(s)
- Shu Chen
- Cancer Research Institute, Foshan First People's Hospital, Foshan, Guangdong 528000, China
| | - Guoying Ni
- School of Medical Science, Griffith Health Institute, Griffith University, Gold Coast, QLD 4222, Australia
| | - Xiaolian Wu
- Cancer Research Institute, Foshan First People's Hospital, Foshan, Guangdong 528000, China
| | - Bin Zhu
- Cancer Research Institute, Foshan First People's Hospital, Foshan, Guangdong 528000, China
| | - Zaowen Liao
- Cancer Research Institute, Foshan First People's Hospital, Foshan, Guangdong 528000, China
| | - Yuejian Wang
- Cancer Research Institute, Foshan First People's Hospital, Foshan, Guangdong 528000, China.
| | - Xiaosong Liu
- Cancer Research Institute, Foshan First People's Hospital, Foshan, Guangdong 528000, China; Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of Sunshine Coast, Maroochydore DC, QLD 4558, Australia.
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Song D, Li H, Li H, Dai J. Effect of human papillomavirus infection on the immune system and its role in the course of cervical cancer. Oncol Lett 2015; 10:600-606. [PMID: 26622540 DOI: 10.3892/ol.2015.3295] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 04/13/2015] [Indexed: 02/07/2023] Open
Abstract
Human papillomavirus (HPV) is widely known as a cause of cervical intraepithelial neoplasia (CIN) and cervical cancer. The mechanisms involved have been studied by numerous studies. The integration of the virus genome into the host cells results in the abnormal regulation of cell cycle control. HPV can also induce immune evasion of the infected cells, which enable the virus to be undetectable for long periods of time. The induction of immunotolerance of the host's immune system by the persistent infection of HPV is one of the most important mechanisms for cervical lesions. The present review elaborates on the roles of several types of immune cells, such as macrophages and natural killer cells, which are classified as innate immune cells, and dendritic cells (DCs), cluster of differentiation (CD)4+/CD8+ T cells and regulatory T cells, which are classified as adaptive immune cells. HPV infection could effect the differentiation of these immune cells in a unique way, resulting in the host's immune tolerance to the infection. The immune system modifications induced by HPV infection include tumor-associated macrophage differentiation, a compromised cellular immune response, an abnormal imbalance between type 1 T-helper cells (Th1) and Th2 cells, regulatory T cell infiltration, and downregulated DC activation and maturation. To date, numerous types of preventative vaccines have been created to slow down carcinogenesis. Immune response activation-based therapeutic vaccine is becoming more and more attractive for the treatment of HPV-associated diseases.
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Affiliation(s)
- Dan Song
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu 215002, P.R. China
| | - Hong Li
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu 215002, P.R. China
| | - Haibo Li
- Center for Reproduction and Genetics, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu 215002, P.R. China
| | - Jianrong Dai
- Department of Gynecology, Suzhou Municipal Hospital, Nanjing Medical University Affiliated Suzhou Hospital, Suzhou, Jiangsu 215002, P.R. China
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Li YL, Ma ZL, Zhao Y, Zhang J. Immunization with mutant HPV16 E7 protein inhibits the growth of TC-1 cells in tumor-bearing mice. Oncol Lett 2015; 9:1851-1856. [PMID: 25789055 PMCID: PMC4356387 DOI: 10.3892/ol.2015.2911] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 12/12/2014] [Indexed: 11/06/2022] Open
Abstract
Two human papillomavirus (HPV) 16 oncogenic proteins, E6 and E7, are co-expressed in the majority of HPV16-induced cervical cancer cells. Thus, the E6 and E7 proteins are good targets for developing therapeutic vaccines for cervical cancer. In the present study, immunization with the mutant non-transforming HPV16 E7 (mE7) protein was demonstrated to inhibit the growth of TC-1 cells in the TC-1 mouse model. The HPV16 mE7 gene was amplified by splicing overlap extension polymerase chain reaction using pET-28a(+)-E7 as a template, and the gene was cloned into pET-28a(+) to form pET-28a(+)-mE7. Compared with the E7 protein, mE7 lacks amino acid residues 94–98, and at residue 24, there is a Cys to Gly substitution. pET-28a(+)-mE7 was then introduced into Escherichia coli Rosetta. The expression of mE7 was induced by isopropyl β-D-1-thiogalactopyranoside. The mE7 protein was purified using Ni-NTA agarose and detected by SDS-PAGE and western blot analysis. In the tumor prevention model, no tumor was detected in the mice vaccinated with the mE7 protein. After 40 days, the tumor-free mice and control mice were challenged with 2×105 TC-1 cells. All control mice developed tumors six days later, but mE7 immunized mice were tumor free until 90 days. In the tumor therapy model, the TC-1 cells were initially injected subcutaneously, and the mice were subsequently vaccinated. Vaccination against the mE7 protein may significantly inhibit TC-1 cell growth compared to the control. These results demonstrated that immunization with the HPV16 mE7 protein elicited a long-term protective immunity against TC-1 tumor growth and generated a significant inhibition of TC-1 growth in a TC-1 mouse model.
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Affiliation(s)
- Yan-Li Li
- School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China ; Institute of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, P.R. China
| | - Zhong-Liang Ma
- School of Life Sciences, Shanghai University, Shanghai 200444, P.R. China
| | - Yue Zhao
- Institute of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, P.R. China
| | - Jing Zhang
- Institute of Molecular Medicine, Nanjing University, Nanjing, Jiangsu 210093, P.R. China
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Therapeutic Vaccine Strategies against Human Papillomavirus. Vaccines (Basel) 2014; 2:422-62. [PMID: 26344626 PMCID: PMC4494257 DOI: 10.3390/vaccines2020422] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Revised: 05/16/2014] [Accepted: 05/27/2014] [Indexed: 12/14/2022] Open
Abstract
High-risk types of human papillomavirus (HPV) cause over 500,000 cervical, anogenital and oropharyngeal cancer cases per year. The transforming potential of HPVs is mediated by viral oncoproteins. These are essential for the induction and maintenance of the malignant phenotype. Thus, HPV-mediated malignancies pose the unique opportunity in cancer vaccination to target immunologically foreign epitopes. Therapeutic HPV vaccination is therefore an ideal scenario for proof-of-concept studies of cancer immunotherapy. This is reflected by the fact that a multitude of approaches has been utilized in therapeutic HPV vaccination design: protein and peptide vaccination, DNA vaccination, nanoparticle- and cell-based vaccines, and live viral and bacterial vectors. This review provides a comprehensive overview of completed and ongoing clinical trials in therapeutic HPV vaccination (summarized in tables), and also highlights selected promising preclinical studies. Special emphasis is given to adjuvant science and the potential impact of novel developments in vaccinology research, such as combination therapies to overcome tumor immune suppression, the use of novel materials and mouse models, as well as systems vaccinology and immunogenetics approaches.
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