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Assessment of Human Natural Killer Cell Events Driven by FcγRIIIa Engagement in the Presence of Therapeutic Antibodies
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Type II natural killer T cells foster the antitumor activity of CpG-oligodeoxynucleotides

Jie Zhao1, Sreya Bagchi1, Chyung-Ru Wang1

  • 1Department of Microbiology and Immunology; Feinberg School of Medicine; Northwestern University; Chicago, IL USA.

Oncoimmunology
|July 25, 2014
PubMed

Insights

CpG oligonucleotide therapy shifts Type II natural killer T (NKT) cells from producing immunosuppressive IL-13 to cancer-fighting Th1 cytokines. This reprogramming offers potential for novel cancer immunotherapy strategies.

Area of Science:

  • Immunology
  • Cancer Research
  • Immunotherapy

Background:

  • Type II natural killer T (NKT) cells typically suppress anti-tumor immunity by secreting IL-13.
  • This immunosuppressive function hinders effective tumor immunosurveillance.

Purpose of the Study:

  • To investigate the effect of CpG oligonucleotide therapy on Type II NKT cell cytokine production.
  • To determine if this therapy can redirect Type II NKT cells towards an anti-tumor phenotype.

Main Methods:

  • Administration of CpG oligonucleotide therapy.
  • Analysis of cytokine profiles produced by Type II NKT cells post-therapy.

Main Results:

  • CpG oligonucleotide therapy activated Type II NKT cells to produce T helper type 1 (Th1) cytokines.
  • This represents a shift away from the typical T helper type 2 (Th2) cytokine profile (IL-13).

Conclusions:

  • CpG oligonucleotide therapy can reprogram Type II NKT cells to produce anti-tumor Th1 cytokines.
  • This cytokine skewing suggests a potential role for Type II NKT cells in cancer immunotherapy.
Keywords:
CD1NKT cellsimmunotherapytumor immunity

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