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Kong W, Wang C, Wang H, Liu H, Mu J, Jiang J, Zhang C. Hyperosmotic cold shock mouse melanoma cells encapsulated with doxorubicin for targeted treatment of melanoma. Front Oncol 2024; 14:1403719. [PMID: 38751816 PMCID: PMC11094257 DOI: 10.3389/fonc.2024.1403719] [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: 03/19/2024] [Accepted: 04/15/2024] [Indexed: 05/18/2024] Open
Abstract
Background The primary treatment strategies for melanoma include surgical excision, chemotherapy, and radiotherapy. However, the efficacy of these treatments is often limited by drug resistance, recurrence, and severe side effects. Therefore, we aimed to develop a targeted drug delivery system capable of selectively locating tumor sites to minimize systemic toxicity and enhance therapeutic efficacy. This cell drug delivery system can also deliver chemotherapeutic drugs to the tumor microenvironment. Methods We treated B16F10 cells with hyperosmotic cold shock (HCS) to obtain and characterize HCS cells. We then investigated the anti-tumor effects and immune activation capabilities of these cells and explored their potential as a targeted drug delivery system. Results HCS cells not only maintained an intact cellular structure and tumor antigens but also exhibited high expression of the homologous melanoma-associated antigen glycoprotein 100. These cells demonstrated an exceptional capacity for loading and releasing doxorubicin, which has chemotherapeutic anti-tumor effects. HCS cells can precisely target the tumor microenvironment to minimize systemic toxicity, inducing an immune response by activating CD3+ and CD4+ T cells. Conclusion HCS cells are non-carcinogenic, with both cellular and tumor antigens intact; thus, they are suitable drug delivery carriers. Our findings highlight the potential of HCS cells for carrying doxorubicin because of their high drug-loading efficiency, effective tumor-targeting and anti-tumor effects. Therefore, our results will facilitate the development of melanoma treatments that have higher efficacy than those in the literature.
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Affiliation(s)
- Weihui Kong
- Department of Stomatology, The First Hospital of Jilin University, Changchun, China
| | - Chengran Wang
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Hui Wang
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Haiou Liu
- Department of Stomatology, The First Hospital of Jilin University, Changchun, China
| | - Jianhui Mu
- Spine Surgery, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Jinlan Jiang
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Congxiao Zhang
- Department of Stomatology, The First Hospital of Jilin University, Changchun, China
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Guo Q, Wang L, Wuriqimuge, Dong L, Feng M, Bao X, Zhang K, Cai Z, Qu X, Zhang S, Wu J, Wu H, Wang C, Yu X, Kong W, Zhang H. Metformin improved a heterologous prime-boost of dual-targeting cancer vaccines to inhibit tumor growth in a melanoma mouse model. Int Immunopharmacol 2024; 128:111431. [PMID: 38244520 DOI: 10.1016/j.intimp.2023.111431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 01/22/2024]
Abstract
Therapeutic cancer vaccines, which induce anti-tumor immunity by targeting specific antigens, constitute a promising approach to cancer therapy. Our previous work proposed an optimized heterologous immunization strategy using cancer gene vaccines co-targeting MUC1 and survivin. Administration of a DNA vaccine three times within a week followed by a single recombinant MVA (rMVA) boost was able to efficiently induce anti-tumor immunity and inhibit tumor growth in tumor-bearing mouse models However, the complex immunosuppressive tumor microenvironment always limits infiltration by vaccine-induced T cells. Modifying the immunosuppressive microenvironment of tumors would be a breakthrough in enhancing the therapeutic effects of a cancer vaccine. Recent studies have reported that metformin, a type 2 diabetes drug, may ameliorate the tumor microenvironment, thereby enhancing anti-tumor immunity. Here, we tested whether the combinational therapeutic strategy of cancer vaccines administered with a heterologous prime-boost strategy with metformin enhanced anti-tumor effects in a melanoma mouse model. The results showed that metformin promoted the transition of M2-tumor-associated macrophages (M2-TAM) to M1-TAM, induced more tumor-infiltrating proliferative CD4 and CD8 T cells, and decreased exhausted T cells. This combinational treatment induced anti-tumor immunity from cancer vaccines, ameliorating the tumor microenvironment, showing improved tumor inhibition, and prolonging survival in tumor-bearing mice compared with either a cancer vaccine or metformin alone.
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Affiliation(s)
- Qianqian Guo
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Lizheng Wang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Wuriqimuge
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Ling Dong
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Mengfan Feng
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Xin Bao
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Ke Zhang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Zongyu Cai
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Xueli Qu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Shiqi Zhang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Jiaxin Wu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Hui Wu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Chu Wang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Xianghui Yu
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China; Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Wei Kong
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China; Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Haihong Zhang
- National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Jilin University, Changchun 130012, China.
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3
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Zhang K, Wuri Q, Cai Z, Qu X, Zhang S, Wu H, Wu J, Wang C, Yu X, Kong W, Zhang H. The XCL1-Mediated DNA Vaccine Targeting Type 1 Conventional Dendritic Cells Combined with Gemcitabine and Anti-PD1 Antibody Induces Potent Antitumor Immunity in a Mouse Lung Cancer Model. Int J Mol Sci 2024; 25:1880. [PMID: 38339158 PMCID: PMC10855623 DOI: 10.3390/ijms25031880] [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: 12/05/2023] [Revised: 01/25/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024] Open
Abstract
With the advent of cancer immunotherapy, there is a growing interest in vaccine development as a means to activate the cellular immune system against cancer. Despite the promise of DNA vaccines in this regard, their effectiveness is hindered by poor immunogenicity, leading to modest therapeutic outcomes across various cancers. The role of Type 1 conventional dendritic cells (cDC1), capable of cross-presenting vaccine antigens to activate CD8+T cells, emerges as crucial for the antitumor function of DNA vaccines. To address the limitations of DNA vaccines, a promising approach involves targeting antigens to cDC1 through the fusion of XCL1, a ligand specific to the receptor XCR1 on the surface of cDC1. Here, female C57BL/6 mice were selected for tumor inoculation and immunotherapy. Additionally, recognizing the complexity of cancer, this study explored the use of combination therapies, particularly the combination of cDC1-targeted DNA vaccine with the chemotherapy drug Gemcitabine (Gem) and the anti-PD1 antibody in a mouse lung cancer model. The study's findings indicate that fusion antigens with XCL1 effectively enhance both the immunogenicity and antitumor effects of DNA vaccines. Moreover, the combination of the cDC1-targeted DNA vaccine with Gemcitabine and anti-PD1 antibody in the mouse lung cancer model demonstrates an improved antitumor effect, leading to the prolonged survival of mice. In conclusion, this research provides important support for the clinical investigation of cDC1-targeting DNA vaccines in combination with other therapies.
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Affiliation(s)
- Ke Zhang
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Qimuge Wuri
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Zongyu Cai
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Xueli Qu
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Shiqi Zhang
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Hui Wu
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Jiaxin Wu
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Chu Wang
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
| | - Xianghui Yu
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Wei Kong
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
- Key Laboratory for Molecular Enzymology and Engineering, The Ministry of Education, School of Life Sciences, Jilin University, Changchun 130012, China
| | - Haihong Zhang
- National Engineering Laboratory for AIDS Vaccine, School of Life Science, Jilin University, Changchun 130012, China; (K.Z.); (Q.W.); (Z.C.); (X.Q.); (S.Z.); (H.W.); (J.W.); (C.W.); (X.Y.); (W.K.)
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4
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Dong L, Feng M, Qiao Y, Liu C, Zhou Y, Xing S, Zhang K, Cai Z, Wu H, Wu J, Yu X, Zhang H, Kong W. Preclinical safety and Biodistribution in mice following single dose intramuscular inoculation of tumor DNA vaccine by electroporation. Hum Gene Ther 2022; 33:757-764. [DOI: 10.1089/hum.2022.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Ling Dong
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Mengfan Feng
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Yaru Qiao
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Chenlu Liu
- Jilin University, 12510, Department of Biobank, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Yi Zhou
- Jilin University, 12510, Changchun, China
| | - Shanshan Xing
- Jilin University, 12510, Changchun, Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, School of Life Sciences, China
| | - Ke Zhang
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Zongyu Cai
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Hui Wu
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Jiaxin Wu
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Xianghui Yu
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, School of Life Sciences, Jilin University, Changchun, Changchun, Jilin, China, 130012
- Jilin University, 12510, Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, School of Life Sciences, School of Life Sciences, Jilin University, Changchun, Changchun, Jilin, China, 130012
| | - Haihong Zhang
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
| | - Wei Kong
- Jilin University, 12510, National Engineering Laboratory for AIDS Vaccine, School of Life Sciences, Changchun, Jilin, China
- Jilin University, 12510, Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, School of Life Sciences, Changchun, China
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5
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Wang Y, Zhao Z, Liu C, Hao M, Kong C, Zhao X, Gao Y, Zhang Y, Cui W, Zhang C, Jiang J. B16 Membrane-Coated Vesicles for Combined Photodynamic Therapy and Immunotherapy Shift Immune Microenvironment of Melanoma. Int J Nanomedicine 2022; 17:855-868. [PMID: 35360006 PMCID: PMC8962769 DOI: 10.2147/ijn.s338488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/01/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction Coating of nanomedicine with cell membranes has attracted increasing attention as it can boost biocompatibility and improve the efficiency of treatment. Herein, we prepared innovative tumor cell-membrane-coated vesicles based on photodynamic therapy (PDT) drug indocyanine green (ICG) and explore the effect on melanoma in vitro and in vivo. Methods ICG was coated with B16 cell membranes (I@BM NVs) by sonication and extrusion, and the morphological characteristics of I@BM NVs were evaluated by transmission electron microscopy (TEM) and NP-tracking analysis. Homologous cellular uptake was evaluated by flow cytometry (FCM) after staining by DiD dye. Cellular cytotoxicity was evaluated by cell counting kit-8 assay and the anti-tumor effect in vitro was assessed by FCM and western blotting. The anti-tumor effect in vivo was evaluated in a B16 xenograft model in mice. The tumor micro-environment was investigated by FCM and real-time PCR. Results The vesicles are stable and uniform in nature, and show strong homologous targeting in vivo and in vitro. The vesicles can generate reactive oxygen species to induce apoptosis of B16 cells under near-infrared irradiation. Furthermore, the I@BM NVs induce a significant anti-tumor response in vivo, and perform better with respect to both tumor growth inhibition and lifespan extension. Analysis of immunocytes in the tumor microenvironment showed significant reductions in numbers of myeloid-derived suppressor cells and tumor-associated M2 macrophages in mice in the I@BM NVs group. This was accompanied by significant increases in numbers of M1 macrophages and proliferative CD4+/CD8+ T cells. Expression levels of IFN-γ and IL-2 increased in the I@BM NVs group, while expression of TGF-β and IL-10 decreased. Conclusion The results show that the I@BM NVs are feasible drugs for the treatment of melanoma by inducing cell apoptosis under NIR and shifting the immunosuppressive tumor microenvironment in vivo.
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Affiliation(s)
- Yuqian Wang
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Zhilong Zhao
- Department of Stomatology, The First Hospital of Jilin University, Changchun, 130031, People’s Republic of China
| | - Chenlu Liu
- Biobank, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Miao Hao
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Chenfei Kong
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Xiaoming Zhao
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Yiyao Gao
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Yucheng Zhang
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
| | - Wanxing Cui
- Medstar Georgetown Transplant Institute, Georgetown University Hospital, Washington, DC, 20007, USA
| | - Congxiao Zhang
- Department of Stomatology, The First Hospital of Jilin University, Changchun, 130031, People’s Republic of China
- Correspondence: Congxiao Zhang; Jinlan Jiang, Email ;
| | - Jinlan Jiang
- Scientific Research Center, China-Japan Union Hospital, Jilin University, Changchun, 130031, People’s Republic of China
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6
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Liu C, Cong X, Wang Y, Guo Q, Xie Y, Geng F, Guo J, Dong L, Zhou Y, Wu H, Yu B, Wu J, Zhang H, Yu X, Kong W. Fast DNA Vaccination Strategy Elicits a Stronger Immune Response Dependent on CD8 +CD11c + Cell Accumulation. Front Oncol 2021; 11:752444. [PMID: 34950581 PMCID: PMC8691261 DOI: 10.3389/fonc.2021.752444] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Conventional DNA vaccine strategies usually employ a regimen of immunizations at 2-week or longer intervals to induce effective memory cell-dependent immune responses. Clinical cancer treatment requires a faster immunization strategy to contend with tumor progression. In this study, a novel fast immunization strategy was established, wherein a DNA vaccine was intramuscularly administered on days 0, 2, and 5 in a murine lung cancer model. Effector cells peaked 7 to 10 days after the last vaccination. Compared with traditional 2-week-interval immunization strategies, antigen-specific cytolysis and INF-γ secretion were significantly enhanced under the fast vaccination approach. As a result, the rapidly administered DNA vaccine elicited stronger and more prompt antitumor effects. The probable underlying mechanism of fast immunization was the accumulation of CD8+CD11c+ antigen-presenting cells at the injection site, which enhanced subsequent antigen presentation. In conclusion, the fast DNA vaccination strategy shortened vaccination time to 5 days and elicited a stronger antitumor immune response.
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Affiliation(s)
- Chenlu Liu
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Biobank, China-Japan Union Hospital of Jilin University, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Xianling Cong
- Biobank, China-Japan Union Hospital of Jilin University, Jilin University, Changchun, China
| | - Yuqian Wang
- Biobank, China-Japan Union Hospital of Jilin University, Jilin University, Changchun, China
| | - Qianqian Guo
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Yu Xie
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Fei Geng
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Jie Guo
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Ling Dong
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Yi Zhou
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Hui Wu
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Bin Yu
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Jiaxin Wu
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Haihong Zhang
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Xianghui Yu
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
| | - Wei Kong
- National Engineering Laboratory for AIDS Vaccine, College of Life Science, Jilin University, Changchun, China.,Key Laboratory for Molecular Enzymology and Engineering, College of Life Science, Jilin University, Changchun, China
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7
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Heterologous administration of HPV16 E7 epitope-loaded nanocomplexes inhibits tumor growth in mouse model. Int Immunopharmacol 2021; 101:108298. [PMID: 34739928 DOI: 10.1016/j.intimp.2021.108298] [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: 05/05/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 01/02/2023]
Abstract
The nanostructured complexes can result in enhanced vaccine efficacy by facilitating the distribution and uptake of antigens by antigen-presenting cells (APCs), thereby stimulating immune responses. Here, we hypothesized that either directly coating of nanoadjuvants including aluminum phosphate (AlPO4) and adenovirus (Ad) with a modified HPV16 E7 MHC-I specific epitope, RAHYNIVTF49-57, or mixing the CpG oligodeoxynucleotide (CpG-ODN) with the cationic epitope to form nanocomlexes, and their combinational therapy would enhance their anti-tumor effects in a TC-1 mouse model. The positively-charged HPV16 E7 epitope was attracted to the oppositely-charged adjuvants by electrostatic interaction to generate epitope/adjuvant nanocomplexes. We showed that coating the nanosized adjuvants with the cationic epitope increased the particles' surface charge without significant change in their size. We then tested the cellular immunogenicity and therapeutic efficacy of nanocomplexes by measuring IL-10 and IFN-γ production, the expression of CD107a as a marker of CTL response, and tumor growth inhibition. The nanocomplexes were administered either in homologous or heterologous prime-boost regimens, and heterologous immunizations including Ad/Pep-CpG/Pep, CpG/Pep-Ad/Pep, Ad/Pep-Alum/Pep, and Alum/Pep-Ad/Pep induced significantly higher levels of IL-10, IFN-γ, and CD107a-expressing CD8 T cells compared with homologous administrations. Furthermore, the tumor growth was significantly suppressed in mice receiving nanostructured complexes in the heterologous immunizations. Our study highlights the potential of the heterologous prime-boost administration of the epitope-coated nanostructures as an effective immunization strategy.
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