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Natural Killer Cells: A Promising Kit in the Adoptive Cell Therapy Toolbox

Jiani Xiao1, Tianxiang Zhang2, Fei Gao1

  • 1Department of Pathology, School of Basic Medical Sciences, Xiangya Hospital, Central South University, Changsha 410000, China.

Cancers
|November 26, 2022
PubMed

Insights

Natural killer (NK) cells offer a promising "off-the-shelf" cancer immunotherapy. Genetic engineering, particularly chimeric antigen receptor (CAR) modification, enhances NK cell therapy effectiveness against tumors.

Area of Science:

  • Immunology and Cancer Therapy

Background:

  • Natural killer (NK) cells are key innate immune components with inherent tumor-killing capabilities.
  • NK cells offer advantages over T cells for "off-the-shelf" adoptive cell therapy due to MHC-unrestricted tumor recognition.

Purpose of the Study:

  • To review recent advancements in natural killer (NK) cell-based adoptive cell therapy for cancer.
  • To explore novel sources, genetic engineering strategies, and clinical applications of therapeutic NK cells.

Main Methods:

  • Review of current literature on NK cell sources and functions in cancer immunotherapy.
  • Analysis of genetic engineering techniques, including chimeric antigen receptor (CAR) modifications.
  • Summary of recent clinical trial data for adoptive NK cell therapy.

Main Results:

  • Emerging NK cell sources provide flexible options for cancer immunotherapy.
  • Chimeric antigen receptor (CAR) engineering significantly enhances NK cell specificity, cytotoxicity, and persistence.
  • Genetic modifications improve NK cell function and overcome tumor-induced immunosuppression.

Conclusions:

  • Adoptive NK cell therapy is a rapidly advancing field with significant therapeutic potential.
  • CAR-engineered NK cells represent a promising strategy for effective and versatile cancer treatment.
Keywords:
NK cellsadoptive cell therapy (ACT)cancer immunotherapychimeric antigen receptor (CAR)genetic engineering

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