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Challenges of NK cell-based immunotherapy in the new era

Fang Fang1,2, Weihua Xiao3,4, Zhigang Tian5,6

  • 1Institute of Immunology and the CAS Key Laboratory of Innate Immunity and Chronic Disease, Innovation Center for Cell Signaling Network, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, 230027, China.

Frontiers of Medicine
|July 27, 2018
PubMed

Insights

Natural killer (NK) cells show promise for cancer immunotherapy by directly eliminating tumor cells. Optimizing NK cell production from peripheral blood mononuclear cells (PBMCs) is crucial for safe and effective clinical applications.

Area of Science:

  • Immunology
  • Cancer Research
  • Cell Therapy

Background:

  • Natural killer (NK) cells are potent immune cells capable of directly killing cancer cells without prior sensitization.
  • NK cells can be sourced from various origins, including peripheral blood mononuclear cells (PBMCs), stem cells, and established cell lines.
  • Allogeneic NK cells expanded from PBMCs demonstrate enhanced therapeutic efficacy compared to other sources.

Purpose of the Study:

  • To review the challenges and clinical outcomes associated with NK cell-based cancer immunotherapy.
  • To highlight the need for optimized protocols for manufacturing NK cells from PBMCs for therapeutic use.

Main Methods:

  • Literature review of existing studies on NK cell expansion and therapeutic applications.
  • Analysis of safety, activity, and reliability considerations for cell product manufacturing.
  • Discussion of clinical outcomes and challenges in NK cell-based therapy.

Main Results:

  • NK cells offer a promising avenue for cancer immunotherapy due to their direct cytotoxic activity.
  • Expansion of allogeneic NK cells from PBMCs shows superior efficacy.
  • Development of standardized manufacturing protocols is essential for clinical translation.

Conclusions:

  • NK cell therapy holds significant potential for cancer treatment.
  • Further research is required to establish optimal, safe, and reliable protocols for large-scale NK cell production from PBMCs.
  • Addressing manufacturing challenges is key to advancing NK cell-based therapeutic regimens.
Keywords:
adoptive transfergenetic modificationimmune checkpoint inhibitorimmunotherapynatural killer cells

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