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State-of-the-Art Cancer Immunotherapies—2nd Edition

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Immunology".

Deadline for manuscript submissions: 20 August 2025 | Viewed by 7689

Special Issue Editors


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Guest Editor
Department of Immunoregulation, Institute of Medical Science, Tokyo Medical University, 6-1-1 Shinjuku, Shinjuku-ku, Tokyo 160-8402, Japan
Interests: cytokines; antitumor immunity; vaccine; regenerative medicine; mesenchymal stem cells; autoimmune diseases; allergic diseases; inflammatory diseases; sensitization; hapten
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Guest Editor
Department of Cellular and Molecular Immunology, Mie University Graduate School of Medicine, 2-174 Esobashi, Tsu, Mie 514-8507, Japan
Interests: Th; Treg; CTL; CAR-T; TAM; metabolism; tumor immunity; cancer vaccine
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Infection and Host Defense, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto 390-8621, Japan
Interests: inflammation; inflammatory diseases; cytokines; parasite infection; immune regulation; tumor immunity
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The current global success in the protection against COVID-19 through vaccination has proved the effectiveness and safety of the mRNA vaccine delivered by lipid nanoparticles. Such breakthroughs, including cancer vaccination; adoptive cell transfer therapy using CAR-T cells, TCR-T cells, and iPS cell-derived cells; immune checkpoint inhibitors; antibody therapy; dendritic cell therapy; and molecular targeting therapy, have greatly improved cancer patient outcomes. However, the overall survival rate is still unsatisfactory; therefore, it is necessary to much better understand the molecular mechanisms of cancer development and progression in the immunosuppressive tumor microenvironment.

In this Special Issue, we will focus on the latest advances in research on cancer immunotherapy ranging from basic research to clinical aspects that may advance our understanding of human cancer. Since IJMS is a journal of molecular science, pure clinical studies such as case reports will not be suitable for submission, but clinical submissions such as biomolecular experiments are welcome.

Prof. Dr. Takayuki Yoshimoto
Dr. Takuma Kato
Dr. Hisashi Nagase
Guest Editors

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Keywords

  • immune checkpoint inhibitors
  • antibody therapy
  • cytokines/chemokines
  • CAR-T and TCR-T cells
  • iPS cell-derived cells
  • dendritic cell therapy
  • vaccine
  • inflammation
  • mesenchymal stem cells
  • immunosuppressive tumor microenvironment

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Related Special Issue

Published Papers (3 papers)

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Research

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14 pages, 2789 KiB  
Article
Chimeric Antigen Receptor T Cell Bearing Herpes Virus Entry Mediator Co-Stimulatory Signal Domain Exhibits Exhaustion-Resistant Properties
by Jun-ichi Nunoya, Nagisa Imuta and Michiaki Masuda
Int. J. Mol. Sci. 2024, 25(16), 8662; https://doi.org/10.3390/ijms25168662 - 8 Aug 2024
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Abstract
Improving chimeric antigen receptor (CAR)-T cell therapeutic outcomes and expanding its applicability to solid tumors requires further refinement of CAR-T cells. We previously reported that CAR-T cells bearing a herpes virus entry mediator (HVEM)-derived co-stimulatory signal domain (CSSD) (HVEM-CAR-T cells) exhibit superior functions [...] Read more.
Improving chimeric antigen receptor (CAR)-T cell therapeutic outcomes and expanding its applicability to solid tumors requires further refinement of CAR-T cells. We previously reported that CAR-T cells bearing a herpes virus entry mediator (HVEM)-derived co-stimulatory signal domain (CSSD) (HVEM-CAR-T cells) exhibit superior functions and characteristics. Here, we conducted comparative analyses to evaluate the impact of different CSSDs on CAR-T cell exhaustion. The results indicated that HVEM-CAR-T cells had significantly lower frequencies of exhausted cells and exhibited the highest proliferation rates upon antigenic stimulation. Furthermore, proliferation inhibition by programmed cell death ligand 1 was stronger in CAR-T cells bearing CD28-derived CSSD (CD28-CAR-T cells) whereas it was weaker in HVEM-CAR-T. Additionally, HVEM-CAR-T cells maintained a low exhaustion level even after antigen-dependent proliferation and exhibited potent killing activities, suggesting that HVEM-CAR-T cells might be less prone to early exhaustion. Analysis of CAR localization on the cell surface revealed that CAR formed clusters in CD28-CAR-T cells whereas uniformly distributed in HVEM-CAR-T cells. Analysis of CD3ζ phosphorylation indicated that CAR-dependent tonic signals were strongly sustained in CD28-CAR-T cells whereas they were significantly weaker in HVEM-CAR-T cells. Collectively, these results suggest that the HVEM-derived CSSD is useful for generating CAR-T cells with exhaustion-resistant properties, which could be effective against solid tumors. Full article
(This article belongs to the Special Issue State-of-the-Art Cancer Immunotherapies—2nd Edition)
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Review

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26 pages, 2544 KiB  
Review
Immortalization of Mesenchymal Stem Cells for Application in Regenerative Medicine and Their Potential Risks of Tumorigenesis
by Natsuki Yamaguchi, Eri Horio, Jukito Sonoda, Miu Yamagishi, Satomi Miyakawa, Fumihiro Murakami, Hideaki Hasegawa, Yasuhiro Katahira, Izuru Mizoguchi, Yasuyuki Fujii, Daichi Chikazu and Takayuki Yoshimoto
Int. J. Mol. Sci. 2024, 25(24), 13562; https://doi.org/10.3390/ijms252413562 - 18 Dec 2024
Cited by 5 | Viewed by 1772
Abstract
Regenerative medicine utilizes stem cells to repair damaged tissues by replacing them with their differentiated cells and activating the body’s inherent regenerative abilities. Mesenchymal stem cells (MSCs) are adult stem cells that possess tissue repair and regenerative capabilities and immunomodulatory properties with a [...] Read more.
Regenerative medicine utilizes stem cells to repair damaged tissues by replacing them with their differentiated cells and activating the body’s inherent regenerative abilities. Mesenchymal stem cells (MSCs) are adult stem cells that possess tissue repair and regenerative capabilities and immunomodulatory properties with a much lower risk of tumorigenicity, making them a focus of numerous clinical trials worldwide. MSCs primarily exert their therapeutic effects through paracrine effects via secreted factors, such as cytokines and exosomes. This has led to increasing interest in cell-free therapy, where only the conditioned medium (also called secretome) from MSC cultures is used for regenerative applications. However, MSCs face certain limitations, including cellular senescence, scarcity, donor heterogeneity, complexity, short survival post-implantation, and regulatory and ethics hurdles. To address these challenges, various types of immortalized MSCs (ImMSCs) capable of indefinite expansion have been developed. These cells offer significant promise and essential tools as a reliable source for both cell-based and cell-free therapies with the aim of translating them into practical medicine. However, the process of immortalization, often involving the transduction of immortalizing genes, poses potential risks of genetic instability and resultant malignant transformation. Cell-free therapy is particularly attractive, as it circumvents the risks of tumorigenicity and ethical concerns associated with live cell therapies. Rigorous safety tests, such as monitoring chromosomal abnormalities, are critical to ensure safety. Technologies like inducible or suicide genes may allow for the controlled proliferation of MSCs and induce apoptosis after their therapeutic task is completed. This review highlights recent advancements in the immortalization of MSCs and the associated risks of tumorigenesis. Full article
(This article belongs to the Special Issue State-of-the-Art Cancer Immunotherapies—2nd Edition)
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22 pages, 1928 KiB  
Review
Revolutionizing CAR T-Cell Therapies: Innovations in Genetic Engineering and Manufacturing to Enhance Efficacy and Accessibility
by Lorenzo Giorgioni, Alessandra Ambrosone, Maria Francesca Cometa, Anna Laura Salvati, Robert Nisticò and Armando Magrelli
Int. J. Mol. Sci. 2024, 25(19), 10365; https://doi.org/10.3390/ijms251910365 - 26 Sep 2024
Cited by 3 | Viewed by 4061
Abstract
Chimeric antigen receptor (CAR) T-cell therapy has achieved notable success in treating hematological cancers but faces significant challenges in solid-tumor treatment and overall efficacy. Key limitations include T-cell exhaustion, tumor relapse, immunosuppressive tumor microenvironments (TME), immunogenicity, and antigen heterogeneity. To address these issues, [...] Read more.
Chimeric antigen receptor (CAR) T-cell therapy has achieved notable success in treating hematological cancers but faces significant challenges in solid-tumor treatment and overall efficacy. Key limitations include T-cell exhaustion, tumor relapse, immunosuppressive tumor microenvironments (TME), immunogenicity, and antigen heterogeneity. To address these issues, various genetic engineering strategies have been proposed. Approaches such as overexpression of transcription factors or metabolic armoring and dynamic CAR regulation are being explored to improve CAR T-cell function and safety. Other efforts to improve CAR T-cell efficacy in solid tumors include targeting novel antigens or developing alternative strategies to address antigen diversity. Despite the promising preclinical results of these solutions, challenges remain in translating CAR T-cell therapies to the clinic to enable economically viable access to these transformative medicines. The efficiency and scalability of autologous CAR T-cell therapy production are hindered by traditional, manual processes which are costly, time-consuming, and prone to variability and contamination. These high-cost, time-intensive processes have complex quality-control requirements. Recent advancements suggest that smaller, decentralized solutions such as microbioreactors and automated point-of-care systems could improve production efficiency, reduce costs, and shorten manufacturing timelines, especially when coupled with innovative manufacturing methods such as transposons and lipid nanoparticles. Future advancements may include harmonized consumables and AI-enabled technologies, which promise to streamline manufacturing, reduce costs, and enhance production quality. Full article
(This article belongs to the Special Issue State-of-the-Art Cancer Immunotherapies—2nd Edition)
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