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Updated: Dec 8, 2025
Advances in Human Induced Pluripotent Stem Cell-Derived Chimeric Antigen Receptor-Expressing Natural Killer Cells
Published on: February 14, 2025
Exploring the NK cell platform for cancer immunotherapy
Jacob A Myers1, Jeffrey S Miller2
1Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN, USA.
Abstract:
Natural killer (NK) cells are cytotoxic lymphocytes of the innate immune system that are capable of killing virally infected and/or cancerous cells. Nearly 20 years ago, NK cell-mediated immunotherapy emerged as a safe and effective treatment approach for patients with advanced-stage leukaemia. Subsequently, the field of NK cell-based cancer therapy has grown exponentially and currently constitutes a major area of immunotherapy innovation. In general, the development of NK cell-directed therapies has two main focal points: optimizing the source of therapeutic NK cells for adoptive transfer and enhancing NK cell cytotoxicity and persistence in vivo. A wide variety of sources of therapeutic NK cells are currently being tested clinically, including haploidentical NK cells, umbilical cord blood NK cells, stem cell-derived NK cells, NK cell lines, adaptive NK cells, cytokine-induced memory-like NK cells and chimeric antigen receptor NK cells. A plethora of methods to augment the cytotoxicity and longevity of NK cells are also under clinical investigation, including cytokine-based agents, NK cell-engager molecules and immune-checkpoint inhibitors. In this Review, we highlight the variety of ways in which diverse NK cell products and their auxiliary therapeutics are being leveraged to target human cancers. We also identify future avenues for NK cell therapy research.
Insights
Natural killer (NK) cell immunotherapy offers a promising approach for treating advanced cancers. Research focuses on optimizing NK cell sources and enhancing their cancer-killing abilities for improved patient outcomes.
Area of Science:
- Immunology
- Oncology
- Cell Therapy
Background:
- Natural killer (NK) cells are crucial innate immune lymphocytes that eliminate virally infected and cancerous cells.
- NK cell-mediated immunotherapy has shown significant promise in treating advanced-stage leukemia.
- The field of NK cell-based cancer therapy is rapidly expanding, representing a key area of immunotherapy innovation.
Purpose of the Study:
- To review current strategies for optimizing therapeutic NK cell sources for adoptive transfer.
- To explore methods for enhancing NK cell cytotoxicity and in vivo persistence.
- To highlight the diverse applications of NK cell products and auxiliary therapeutics in targeting human cancers.
Main Methods:
- Review of clinical investigations into various NK cell sources (haploidentical, cord blood, stem cell-derived, cell lines, adaptive, memory-like, CAR-NK cells).
- Analysis of therapeutic approaches to augment NK cell function, including cytokine-based agents, NK cell-engager molecules, and immune-checkpoint inhibitors.
- Synthesis of current research on leveraging NK cell products and adjunct therapies for cancer treatment.
Main Results:
- Multiple sources of therapeutic NK cells are under active clinical investigation.
- Various methods are being explored to boost NK cell effectiveness and longevity.
- Diverse NK cell-based strategies are being applied to combat human cancers.
Conclusions:
- NK cell therapy is a dynamic and evolving field with significant potential in oncology.
- Continued research into NK cell sources and enhancement methods is vital for advancing cancer treatment.
- Future research should focus on novel avenues to maximize the therapeutic impact of NK cells against cancer.
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