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Tan M, Makiguchi N, Kusamori K, Itakura S, Takahashi Y, Takakura Y, Nishikawa M. Tuning CpG motif position in nanostructured DNA for efficient immune stimulation. Biotechnol J 2024; 19:e2300308. [PMID: 38651249 DOI: 10.1002/biot.202300308] [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: 06/25/2023] [Revised: 03/19/2024] [Accepted: 04/08/2024] [Indexed: 04/25/2024]
Abstract
It was previously demonstrated that polypod-like nanostructured DNA (polypodna) comprising three or more oligodeoxynucleotides (ODNs) were useful for the delivery of ODNs containing cytosine-phosphate-guanine (CpG) motifs, or CpG ODNs, to immune cells. Although the immunostimulatory activity of single-stranded CpG ODNs is highly dependent on CpG motif sequence and position, little is known about how the position of the motif affects the immunostimulatory activity of CpG motif-containing nanostructured DNAs. In the present study, four series of polypodna were designed, each comprising a CpG ODN with one potent CpG motif at varying positions and 2-5 CpG-free ODNs, and investigated their immunostimulatory activity using Toll-like receptor-9 (TLR9)-positive murine macrophage-like RAW264.7 cells. Polypodnas with the CpG motif in the 5'-overhang induced more tumor necrosis factor-α release than those with the motif in the double-stranded region, even though their cellular uptake were similar. Importantly, the rank order of the immunostimulatory activity of single-stranded CpG ODNs changed after their incorporation into polypodna. These results indicate that the CpG ODN sequence as well as the motif location in nanostructured DNAs should be considered for designing the CpG motif-containing nanostructured DNAs for immune stimulation.
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Affiliation(s)
- Mengmeng Tan
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Natsuki Makiguchi
- Laboratory of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Kosuke Kusamori
- Laboratory of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Shoko Itakura
- Laboratory of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
| | - Yuki Takahashi
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Yoshinobu Takakura
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
| | - Makiya Nishikawa
- Laboratory of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
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Nagaoka M, Liao W, Kusamori K, Nishikawa M. Targeted Delivery of Immunostimulatory CpG Oligodeoxynucleotides to Antigen-Presenting Cells in Draining Lymph Nodes by Stearic Acid Modification and Nanostructurization. Int J Mol Sci 2022; 23:ijms23031350. [PMID: 35163272 PMCID: PMC8836026 DOI: 10.3390/ijms23031350] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 01/13/2022] [Accepted: 01/22/2022] [Indexed: 12/10/2022] Open
Abstract
Polypod-like structured nucleic acids (polypodnas), which are nanostructured DNAs, are useful for delivering cytosine-phosphate guanine oligodeoxynucleotides (CpG ODNs) to antigen-presenting cells (APCs) expressing Toll-like receptor 9 (TLR9) for immune stimulation. Lipid modification is another approach to deliver ODNs to lymph nodes, where TLR9-positive APCs are abundant, by binding to serum albumin. The combination of these two methods can be useful for delivering CpG ODNs to lymph nodes in vivo. In the present study, CpG1668, a phosphodiester-type CpG ODN, was modified with stearic acid (SA) to obtain SA-CpG1668. Tripodna, a polypodna with three pods, was selected as the nanostructured DNA. Tripodnas loaded with CpG1668 or SA-CpG1668 were obtained in high yields. SA-CpG1668/tripodna bound more efficiently to plasma proteins than CpG1668/tripodna and was more efficiently taken up by macrophage-like RAW264.7 cells than CpG1668/tripodna, whereas the levels of tumor necrosis factor-α released from the cells were comparable between the two. After subcutaneous injection into mice, SA-CpG1668/tripodna induced significantly higher interleukin (IL)-12 p40 production in the draining lymph nodes than SA-CpG1668 or CpG1668/tripodna, with reduced IL-6 levels in plasma. These results indicate that the combination of SA modification and nanostructurization is a useful approach for the targeted delivery of CpG ODNs to lymph nodes.
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Tu ATT, Hoshi K, Ikebukuro K, Hanagata N, Yamazaki T. Monomeric G-Quadruplex-Based CpG Oligodeoxynucleotides as Potent Toll-Like Receptor 9 Agonists. Biomacromolecules 2020; 21:3644-3657. [PMID: 32857497 DOI: 10.1021/acs.biomac.0c00679] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Synthetic oligodeoxynucleotides (ODNs) containing unmethylated cytosine-phosphate-guanine (CpG) motifs trigger the immune response by stimulating endosomal Toll-like receptor (TLR) 9. Natural linear ODNs are susceptible to nuclease degradation, thereby limiting their clinical applications. Here, we designed monomeric G-quadruplex-based CpG ODNs (G4 CpG ODNs) containing CpG motifs in the central loop region of the G4 structure. The monomeric G4 CpG ODNs were more stable in serum than the linear ODNs. The monomeric G4 CpG ODNs containing two or three CpG motifs induced the production of immunostimulatory cytokines interleukin (IL)-6, IL-12, and interferon (IFN)-β in mouse macrophage-like RAW264 cells. We also showed that the number of CpG motifs and the number of nucleotides between the CpG motif and G-tracts define the efficacy of the G4 CpG ODNs in activating TLR9. Incubating human peripheral blood mononuclear cells with G4 CpG ODNs promoted IL-6 and IFN-γ production, confirming their stimulatory effects on human immune cells. Mice given intraperitoneal injections of G4 CpG ODNs produced higher plasma IL-6 compared with injections of linear ODNs. These findings provide further understanding of the parameters governing the immunostimulatory activity of G4 CpG ODNs, thereby providing insights into the rational design of highly potent G4 CpG ODNs for vaccine adjuvants.
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Affiliation(s)
- Anh Thi Tram Tu
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0808, Japan.,Nanomedicine Group, Research Center for Functional Materials (RCFM), National Institute for Materials Science (NIMS), 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Kazuaki Hoshi
- Nanomedicine Group, Research Center for Functional Materials (RCFM), National Institute for Materials Science (NIMS), 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Kazunori Ikebukuro
- Department of Biotechnology and Life Science, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei 184-8588, Japan
| | - Nobutaka Hanagata
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0808, Japan.,Nanotechnology Innovation Station, National Institute for Materials Science (NIMS), 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
| | - Tomohiko Yamazaki
- Division of Life Science, Graduate School of Life Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0808, Japan.,Nanomedicine Group, Research Center for Functional Materials (RCFM), National Institute for Materials Science (NIMS), 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
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Chi Q, Yang Z, Xu K, Wang C, Liang H. DNA Nanostructure as an Efficient Drug Delivery Platform for Immunotherapy. Front Pharmacol 2020; 10:1585. [PMID: 32063844 PMCID: PMC6997790 DOI: 10.3389/fphar.2019.01585] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 12/06/2019] [Indexed: 12/19/2022] Open
Abstract
Immunotherapy has received increasing attention due to its low potential side effects and high specificity. For instance, cancer immunotherapy has achieved great success. CpG is a well-known and commonly used immunotherapeutic and vaccine adjuvant, but it has the disadvantage of being unstable and low in efficacy and needs to be transported through an effective nanocarrier. With perfect structural programmability, permeability, and biocompatibility, DNA nanostructures are one of the most promising candidates to deliver immune components to realize immunotherapy. However, the instability and low capability of the payload of ordinary DNA assemblies limit the relevant applications. Consequently, DNA nanostructure with a firm structure, high drug payloads is highly desirable. In the paper, the latest progress of biostable, high-payload DNA nanoassemblies of various structures, including cage-like DNA nanostructure, DNA particles, DNA polypods, and DNA hydrogel, are reviewed. Cage-like DNA structures hold drug molecules firmly inside the structure and leave a large space within the cavity. These DNA nanostructures use their unique structure to carry abundant CpG, and their biocompatibility and size advantages to enter immune cells to achieve immunotherapy for various diseases. Part of the DNA nanostructures can also achieve more effective treatment in conjunction with other functional components such as aPD1, RNA, TLR ligands.
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Affiliation(s)
- Qingjia Chi
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
- Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Department of Mechanics and Engineering Structure, Wuhan University of Technology, Wuhan, China
| | - Zichang Yang
- Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics, Department of Mechanics and Engineering Structure, Wuhan University of Technology, Wuhan, China
| | - Kang Xu
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunli Wang
- “111” Project Laboratory of Biomechanics and Tissue Repair, Bioengineering College, Chongqing University, Chongqing, China
| | - Huaping Liang
- State Key Laboratory of Trauma, Burns and Combined Injury, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
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Tan M, Takahashi N, Fujii S, Sakurai K, Kusamori K, Takahashi Y, Takakura Y, Nishikawa M. Analysis of Tertiary Structural Features of Branched DNA Nanostructures with Partially Common Sequences Using Small-Angle X-ray Scattering. ACS APPLIED BIO MATERIALS 2019; 3:308-314. [DOI: 10.1021/acsabm.9b00829] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Mengmeng Tan
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Natsuki Takahashi
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Shota Fujii
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, University of Kitakyushu, 1-1 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka 808-0135, Japan
- Structural Materials Science Laboratory SPring-8 Center, RIKEN Harima Institute Research, 1-1-1 Kouto, Sayo-cho, Sayo, Hyogo 679-5148, Japan
| | - Kosuke Kusamori
- Laboratory of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yuki Takahashi
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshinobu Takakura
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Makiya Nishikawa
- Department of Biopharmaceutics and Drug Metabolism, Graduate School of Pharmaceutical Sciences, Kyoto University, 46-29, Yoshidashimoadachi-cho, Sakyo-ku, Kyoto 606-8501, Japan
- Laboratory of Biopharmaceutics, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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Nishikawa M, Tan M, Liao W, Kusamori K. Nanostructured DNA for the delivery of therapeutic agents. Adv Drug Deliv Rev 2019; 147:29-36. [PMID: 31614168 DOI: 10.1016/j.addr.2019.09.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/25/2019] [Accepted: 09/25/2019] [Indexed: 01/16/2023]
Abstract
DNA and RNA, the nucleic acids found in every living organism, are quite crucial, because not only do they store the genetic information, but also they are used as signals through interaction with various molecules within the body. The nature of nucleic acids, especially DNA, to form double-helix makes it possible to design nucleic acid-based nanostructures with various shapes. Because the shapes as well as the physicochemical properties determine their interaction with proteins or cells, nanostructured DNAs will have different features in the interaction compared with single- or double-stranded DNA. Some of these unique features of nanostructured DNA make ways for efficient delivery of therapeutic agents to specific targets. In this review, we begin with the factors affecting the properties of nanostructured DNA, followed by summarizing the methods for the development of nanostructured DNA. Further, we discuss the characteristics of nanostructured DNA and their applications for the delivery of bioactive compounds.
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Affiliation(s)
- Makiya Nishikawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan.
| | - Mengmeng Tan
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan; Graduate School of Pharmaceutical Sciences, Kyoto University, Japan
| | - Wenqing Liao
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan; Graduate School of Pharmaceutical Sciences, Kyoto University, Japan
| | - Kosuke Kusamori
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Japan
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Yuan Y, Gu Z, Yao C, Luo D, Yang D. Nucleic Acid-Based Functional Nanomaterials as Advanced Cancer Therapeutics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1900172. [PMID: 30972963 DOI: 10.1002/smll.201900172] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 03/04/2019] [Indexed: 06/09/2023]
Abstract
Nucleic acid-based functional nanomaterials (NAFN) have been widely used as emerging drug delivery nanocarriers for cancer therapeutics. Considerable works have demonstrated that NAFN can effectively load and protect therapeutic agents, and particularly enable targeting delivery to the tumor site and stimuli-responsive release. These outstanding performances are due to NAFN's unique properties including inherent biological functions and sequence programmability as well as biocompatibility and biodegradability. In this Review, the recent progress on NAFN as advanced cancer therapeutics is highlighted. Three main cancer therapy approaches are categorized including chemo-, immuno-, and gene-therapy. Examples are presented to show how NAFN are rationally and exquisitely designed to address problems in cancer therapy. The challenges and future development of NAFN are also discussed toward future more practical biomedical applications.
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Affiliation(s)
- Ye Yuan
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, P. R. China
| | - Zi Gu
- School of Chemical Engineering and Australian Centre for NanoMedicine, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Chi Yao
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, P. R. China
| | - Dan Luo
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, 14853, USA
- CAS Key Laboratory of Nano-Bio Interface, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123, P. R. China
| | - Dayong Yang
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, P. R. China
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Hasegawa H, Nagata Y, Terao K, Suginome M. Synthesis and Solution Properties of a Rigid Helical Star Polymer: Three-Arm Star Poly(quinoxaline-2,3-diyl). Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01797] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hirokazu Hasegawa
- Department
of Macromolecular Science, Graduate School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
- Materials
Characterization Laboratories, Toray Research Center, Inc., 3-3-7, Sonoyama, Otsu, Shiga 520-8567, Japan
| | - Yuuya Nagata
- Department
of Synthetic Chemistry and Biological Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan
| | - Ken Terao
- Department
of Macromolecular Science, Graduate School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Michinori Suginome
- Department
of Synthetic Chemistry and Biological Chemistry, Graduate School of
Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan
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Elucidation of the Mechanism of Increased Activity of Immunostimulatory DNA by the Formation of Polypod-like Structure. Pharm Res 2017; 34:2362-2370. [DOI: 10.1007/s11095-017-2243-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 07/27/2017] [Indexed: 12/23/2022]
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Lee JH, Jung SH, Lee SS, Kwon KY, Sakurai K, Jaworski J, Jung JH. Ultraviolet Patterned Calixarene-Derived Supramolecular Gels and Films with Spatially Resolved Mechanical and Fluorescent Properties. ACS NANO 2017; 11:4155-4164. [PMID: 28358496 DOI: 10.1021/acsnano.7b00997] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Supramolecular assemblies have in the past been considered mechanically weak and in most cases unable to withstand their own weight. Calixarene-derived networks can, however, provide robust supramolecular gels. Incorporating a photoreactive stilbene moiety, we show that the aggregation state of the material can be tuned by heating and UV exposure in order to control the mechanical as well as the fluorescent properties. Regulating the extent of heating to control the proportion of H-aggregates and J-aggregates and further cross-linking of H-aggregates by control over UV exposure allows for adjustable photopatterning of the fluorescence as well as the material stiffness in the range from ∼100 to 450 kPa. We expect this straightforward supramolecular system will be suitable for advanced prototyping in applications where modulus and shape are important design criteria.
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Affiliation(s)
- Ji Ha Lee
- Department of Chemistry and Research Institute of National Sciences, Gyeongsang National University , Jinju, Korea
- Department of Chemistry and Biochemistry, The University of Kitakyushu , Hibikino, Kitakyushu 808-0135, Japan
| | - Sung Ho Jung
- Department of Chemistry and Research Institute of National Sciences, Gyeongsang National University , Jinju, Korea
| | - Shim Sung Lee
- Department of Chemistry and Research Institute of National Sciences, Gyeongsang National University , Jinju, Korea
| | - Ki-Young Kwon
- Department of Chemistry and Research Institute of National Sciences, Gyeongsang National University , Jinju, Korea
| | - Kazuo Sakurai
- Department of Chemistry and Biochemistry, The University of Kitakyushu , Hibikino, Kitakyushu 808-0135, Japan
| | - Justyn Jaworski
- Department of Bioengineering, University of Texas, Arlington , Arlington, Texas 76010, United States
| | - Jong Hwa Jung
- Department of Chemistry and Research Institute of National Sciences, Gyeongsang National University , Jinju, Korea
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Miyamoto N, Mochizuki S, Fujii S, Yoshida K, Sakurai K. Adjuvant Activity Enhanced by Cross-Linked CpG-Oligonucleotides in β-Glucan Nanogel and Its Antitumor Effect. Bioconjug Chem 2017; 28:565-573. [PMID: 27951636 DOI: 10.1021/acs.bioconjchem.6b00675] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Cancer vaccine has the ability to directly eradicate tumor cells by creating and activating cytotoxic T lymphocytes (CTLs). To achieve efficient CTL activity and to induce Th1 responses, it is essential to administer an appropriate adjuvant as well as an antigen. CpG-ODN is known as a ligand of Toll-like receptor 9 (TLR9) and strongly induces Th1 responses. In our previous study, we developed a CpG-ODN delivery system by use of the formation of complexes between ODN and a β-glucan SPG, denoted as CpG/SPG, and demonstrated that CpG/SPG induces high Th1 responses. In this study, we created a nanogel made from CpG/SPG complexes through DNA-DNA hybridization (cross-linked (CL)-CpG). Immunization with CL-CpG induced much stronger antigen-specific Th1 responses in combination with the antigenic protein ovalbumin (OVA) than that with CpG/SPG. Mice preimmunized with CL-CpG and OVA exhibited a long delay in tumor growth and an improved survival rate after tumor inoculation. These immune inductions can be attributed to the improvement of cellular uptake by the combination of increased size and the cluster effect of the β-glucan recognition site in the nanogel structure. In other words, the particle nature of CL-CpG, instead of the semiflexible rod conformation of CpG/SPG, enhanced the efficacy of a cancer vaccine. The present results indicate that CL-CpG can be used as a potent vaccine adjuvant for the treatment of cancers and infectious diseases.
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Affiliation(s)
- Noriko Miyamoto
- The University of Kitakyushu , Department of Chemistry and Biochemistry, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan 808-0135
| | - Shinichi Mochizuki
- The University of Kitakyushu , Department of Chemistry and Biochemistry, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan 808-0135
| | - Shota Fujii
- The University of Kitakyushu , Department of Chemistry and Biochemistry, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan 808-0135
| | - Kenta Yoshida
- The University of Kitakyushu , Department of Chemistry and Biochemistry, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan 808-0135
| | - Kazuo Sakurai
- The University of Kitakyushu , Department of Chemistry and Biochemistry, 1-1, Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan 808-0135
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