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NK cell upraise in the dark world of cancer stem cells

Alireza Shokouhifar1,2,3, Javad Firouzi3,4, Masoumeh Nouri5

  • 1Department of Molecular Medicine, Genomic Research Center, Birjand University of Medical Sciences, Birjand, Iran.

Cancer Cell International
|December 20, 2021
PubMed

Insights

Cancer stem cells (CSCs) resist therapy, but advanced immune cell-based therapy (AICBT) shows promise. Chimeric antigen receptor natural killer (CAR-NK) cells offer a new strategy to target and eliminate these resistant CSCs.

Area of Science:

  • Oncology
  • Immunotherapy
  • Cell Biology

Background:

  • Cancer stem cells (CSCs) present a significant challenge in cancer treatment, particularly in solid tumors, due to their inherent resistance to conventional therapies like chemotherapy and radiotherapy.
  • Advanced immune cell-based therapy (AICBT) has emerged as a promising strategy to overcome treatment-resistant cancers.
  • Natural Killer (NK) cells are gaining attention for their cytotoxic potential against various cancers and their ability to identify and eliminate CSCs.

Purpose of the Study:

  • To discuss the characteristics of CSCs targeted by NK cells.
  • To review the advantages and limitations of using chimeric antigen receptor NK (CAR-NK) cells for CSC treatment.
  • To explore potential challenges associated with CAR-NK cell therapy for CSCs.

Main Methods:

  • Review of existing literature on cancer stem cells, NK cells, and CAR-NK cell technology.
  • Analysis of the mechanisms by which NK cells detect and eliminate CSCs.
  • Discussion of the CAR technology applied to NK cells for enhanced anti-CSC activity.

Main Results:

  • NK cells demonstrate efficacy in targeting and killing CSCs.
  • CAR technology enhances NK cell cytotoxicity and specificity, leading to the development of CAR-NK cells.
  • Few studies have explored the application of CAR-NK cells specifically for targeting CSCs.

Conclusions:

  • CAR-NK cells represent a novel and potentially powerful approach for targeting therapy-resistant cancer stem cells.
  • Further research is needed to fully elucidate the advantages, restrictions, and challenges of implementing CAR-NK cell therapy in clinical settings for CSC eradication.
Keywords:
CARCSCImmune cell-based therapyNK cell

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